FreeCalypso > hg > freecalypso-sw

annotate gsm-fw/serial/uart.c @ 426:1060bf70d95d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
doc/Compal-unlock: added cautionary note about flashing firmwares containing boot code that checks the word at 0x2060
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 21 Jun 2014 06:55:27 +0000
parents afceeeb2cba1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
116
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
2 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
3 * UART.C
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
4 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
5 * This module allows to use the UARTs of chipset 1.5 in interrupt mode for
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
6 * the Receive side and in polling mode for the Transmit side.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
7 * The driver calls a user's function when characters are received.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
8 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
9 * (C) Texas Instruments 1999
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
10 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
11 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
12
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
13 #include "../include/config.h"
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
14 #include "../include/sys_types.h"
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
15
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
16 #include "serialswitch.h"
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
17 #include "uart.h"
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
18
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
19 #include <string.h>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
20
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
21 #include "../bsp/mem.h"
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
22
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
23 #if (BOARD != 34)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
24 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
25 * Needed to reset and restart the sleep timer in case of incoming characters.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
26 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
27
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
28 extern SYS_BOOL uart_sleep_timer_enabled;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
29 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
30
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
31 #define BUFFER_SIZE (512) /* In bytes. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
32 #define FIFO_SIZE (64) /* In bytes. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
33
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
34 #define STX 0x02
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
35 #define DLE 0x10
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
36
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
37 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
38 * TLR is used to program the RX FIFO trigger levels. FCR[7:4] are not used.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
39 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
40
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
41 #define RX_FIFO_TRIGGER_LEVEL (12 << 4)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
42
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
43
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
44 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
45 * 16750 addresses. Registers accessed when LCR[7] = 0.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
46 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
47
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
48 #define RHR (0x00) /* Rx buffer register - Read access */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
49 #define THR (0x00) /* Tx holding register - Write access */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
50 #define IER (0x01) /* Interrupt enable register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
51
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
52 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
53 * 16750 addresses. Registers accessed when LCR[7] = 1.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
54 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
55
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
56 #define DLL (0x00) /* Divisor latch (LSB) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
57 #define DLM (0x01) /* Divisor latch (MSB) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
58
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
59
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
60 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
61 * EFR is accessed when LCR[7:0] = 0xBF.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
62 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
63
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
64 #define EFR (0x02) /* Enhanced feature register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
65
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
66
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
67 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
68 * 16750 addresses. Bit 5 of the FCR register is accessed when LCR[7] = 1.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
69 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
70
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
71 #define IIR (0x02) /* Interrupt ident. register - Read only */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
72 #define FCR (0x02) /* FIFO control register - Write only */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
73 #define LCR (0x03) /* Line control register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
74 #define MCR (0x04) /* Modem control register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
75 #define LSR (0x05) /* Line status register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
76 #define MSR (0x06) /* Modem status register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
77 #define TCR (0x06) /* Transmission control register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
78 #define TLR (0x07) /* Trigger level register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
79 #define MDR1 (0x08) /* Mode definition register 1 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
80 #define SCR (0x10) /* Supplementary Control register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
81 #define SSR (0x11) /* Supplementary Status register */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
82
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
83
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
84 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
85 * Supplementary control register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
86 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
87
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
88 #define TX_EMPTY_CTL_IT (0x08)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
89 #define RX_CTS_WAKE_UP_ENABLE_BIT (4) /* Use RESET_BIT and SET_BIT macros. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
90
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
91 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
92 * Enhanced feature register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
93 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
94
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
95 #define ENHANCED_FEATURE_BIT (4) /* Use RESET_BIT and SET_BIT macros. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
96
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
97 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
98 * Mode definition register 1.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
99 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
100
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
101 #define UART_MODE (0x00)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
102 #define SIR_MODE (0x01)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
103 #define UART_MODE_AUTOBAUDING (0x02) /* Reserved in UART/IrDA. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
104 #define RESET_DEFAULT_STATE (0x07)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
105 #define IR_SLEEP_DISABLED (0x00)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
106 #define IR_SLEEP_ENABLED (0x08)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
107 #define SIR_TX_WITHOUT_ACREG2 (0x00) /* Reserved in UART/modem. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
108 #define SIR_TX_WITH_ACREG2 (0x20) /* Reserved in UART/modem. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
109 #define FRAME_LENGTH_METHOD (0x00) /* Reserved in UART/modem. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
110 #define EOT_BIT_METHOD (0x80) /* Reserved in UART/modem. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
111
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
112 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
113 * Supplementary Status Register
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
114 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
115
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
116 #define TX_FIFO_FULL (0x01)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
117
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
118
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
119 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
120 * Interrupt enable register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
121 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
122
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
123 #define ERBI (0x01) /* Enable received data available interrupt */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
124 #define ETBEI (0x02) /* Enable transmitter holding register empty interrupt */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
125 #define ELSI (0x04) /* Enable receiver line status interrupt */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
126 #define EDSSI (0x08) /* Enable modem status interrupt */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
127 #define IER_SLEEP (0x10) /* Enable sleep mode */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
128
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
129 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
130 * Modem control register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
131 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
132
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
133 #define MDTR (0x01) /* Data terminal ready. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
134 #define MRTS (0x02) /* Request to send. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
135 #define TCR_TLR_BIT (6)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
136
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
137 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
138 * Line status register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
139 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
140
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
141 #define DR (0x01) /* Data ready */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
142 #define OE (0x02) /* Overrun error */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
143 #define PE (0x04) /* Parity error */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
144 #define FE (0x08) /* Framing error */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
145 #define BI (0x10) /* Break interrupt */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
146 #define THRE (0x20) /* Transmitter holding register (FIFO empty) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
147 #define TEMT (0x40) /* Transmitter empty (FIFO and TSR both empty) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
148
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
149 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
150 * Interrupt identification register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
151 * Bit 0 is set to 0 if an IT is pending.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
152 * Bits 1 and 2 are used to identify the IT.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
153 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
154
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
155 #define IIR_BITS_USED (0x07)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
156 #define IT_NOT_PENDING (0x01)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
157 #define RX_DATA (0x04)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
158 #define TX_EMPTY (0x02)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
159 #define MODEM_STATUS (0x00)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
160
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
161 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
162 * Line control register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
163 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
164
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
165 #define WLS_5 (0x00) /* Word length: 5 bits */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
166 #define WLS_6 (0x01) /* Word length: 6 bits */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
167 #define WLS_7 (0x02) /* Word length: 7 bits */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
168 #define WLS_8 (0x03) /* Word length: 8 bits */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
169 #define STB (0x04) /* Number of stop bits: 0: 1, 1: 1,5 or 2 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
170 #define PEN (0x08) /* Parity enable */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
171 #define EPS (0x10) /* Even parity select */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
172 #define BREAK_CONTROL (0x40) /* Enable a break condition */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
173 #define DLAB (0x80) /* Divisor latch access bit */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
174 #define DIV_EN_BIT (7)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
175
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
176 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
177 * FIFO control register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
178 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
179
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
180 #define FIFO_ENABLE (0x01)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
181 #define RX_FIFO_RESET (0x02)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
182 #define TX_FIFO_RESET (0x04)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
183
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
184 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
185 * These macros allow to read and write a UART register.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
186 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
187
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
188 #define READ_UART_REGISTER(UART,REG) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
189 *((volatile SYS_UWORD8 *) ((UART)->base_address + (REG)))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
190
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
191 #define WRITE_UART_REGISTER(UART,REG,VALUE) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
192 *((volatile SYS_UWORD8 *) ((UART)->base_address + (REG))) = (VALUE)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
193
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
194 #define RESET_BIT(UART,REG,BIT) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
195 (WRITE_UART_REGISTER ( \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
196 UART, REG, READ_UART_REGISTER (UART, REG) & ~(1 << (BIT))))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
197
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
198 #define SET_BIT(UART,REG,BIT) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
199 (WRITE_UART_REGISTER ( \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
200 UART, REG, READ_UART_REGISTER (UART, REG) | (1 << (BIT))))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
201
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
202 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
203 * These macros allow to enable or disable the wake-up interrupt.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
204 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
205
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
206 #define ENABLE_WAKEUP_INTERRUPT(UART) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
207 SET_BIT(UART, SCR, RX_CTS_WAKE_UP_ENABLE_BIT);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
208
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
209 #define DISABLE_WAKEUP_INTERRUPT(UART) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
210 RESET_BIT(UART, SCR, RX_CTS_WAKE_UP_ENABLE_BIT);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
211
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
212
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
213 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
214 * This macro allows to know if the RX buffer is full. It must be called only
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
215 * from the RX interrupt handler. If it is called from the application, the
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
216 * rx_in pointer may be updated if a RX interrupt occurs.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
217 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
218
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
219 #define RX_BUFFER_FULL(UART) \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
220 (((UART)->rx_in == (UART)->rx_out - 1) || \
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
221 ((UART)->rx_in == (UART)->rx_out + BUFFER_SIZE - 1))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
222
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
223
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
224 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
225 * This allows monitor the last 32 inbound buffers gotten from the RX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
226 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
227
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
228 //#define UART_RX_BUFFER_DUMP
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
229
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
230 #ifdef UART_RX_BUFFER_DUMP
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
231 struct {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
232 char rx_buffer[(BUFFER_SIZE + 1) << 5];
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
233 char *rx_in;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
234 int errors_count;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
235 int wrong_interrupt_status;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
236 } uart_rx_buffer_dump = {0};
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
237 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
238
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
239
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
240 typedef struct s_uart {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
241
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
242 SYS_UWORD32 base_address;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
243
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
244 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
245 * Buffers management.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
246 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
247
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
248 char rx_buffer[BUFFER_SIZE + 1];
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
249 char *rx_in;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
250 char *rx_out;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
251 void (*callback_function) (void);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
252
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
253 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
254 * Errors counters.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
255 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
256
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
257 SYS_UWORD32 framing_error;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
258 SYS_UWORD32 parity_error;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
259 SYS_UWORD32 overrun_error;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
260
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
261 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
262 * Framing flags.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
263 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
264
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
265 SYS_BOOL dle_detected;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
266 SYS_BOOL inframe;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
267 SYS_BOOL encapsulation_flag;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
268 unsigned char frame_length;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
269
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
270 } t_uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
271
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
272 static t_uart uart_parameter[NUMBER_OF_TR_UART];
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
273
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
274 static const SYS_UWORD32 base_address[NUMBER_OF_TR_UART] =
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
275 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
276 MEM_UART_IRDA,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
277 MEM_UART_MODEM
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
278 #if (CHIPSET == 12)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
279 , MEM_UART_MODEM2
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
280 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
281 };
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
282
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
283
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
284 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
285 * DLL (LSB) and DLH (MSB) registers values using the 13 MHz clock.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
286 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
287
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
288 static const SYS_UWORD8 dll[] =
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
289 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
290 2, /* 406250 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
291 7, /* 115200 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
292 14, /* 57600 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
293 21, /* 38400 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
294 24, /* 33900 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
295 28, /* 28800 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
296 42, /* 19200 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
297 56, /* 14400 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
298 84, /* 9600 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
299 169, /* 4800 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
300 83, /* 2400 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
301 165, /* 1200 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
302 74, /* 600 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
303 148, /* 300 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
304 40, /* 150 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
305 81 /* 75 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
306 };
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
307
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
308 static const SYS_UWORD8 dlh[] =
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
309 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
310 0, /* 406250 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
311 0, /* 115200 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
312 0, /* 57600 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
313 0, /* 38400 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
314 0, /* 33900 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
315 0, /* 28800 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
316 0, /* 19200 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
317 0, /* 14400 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
318 0, /* 9600 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
319 0, /* 4800 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
320 1, /* 2400 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
321 2, /* 1200 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
322 5, /* 600 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
323 10, /* 300 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
324 21, /* 150 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
325 42 /* 75 baud. */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
326 };
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
327
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
328
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
329 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
330 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
331 * read_rx_fifo
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
332 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
333 * Purpose : Check the bytes written into the RX FIFO. Characters are not
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
334 * written in the RX buffer if it is full. The HISR is called if
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
335 * enough characters are received.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
336 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
337 * Arguments: In : uart: pointer on UART structure.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
338 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
339 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
340 * Returns : none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
341 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
342 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
343
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
344 static void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
345 read_rx_fifo (t_uart *uart)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
346 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
347 volatile SYS_UWORD8 status;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
348 int error_detected;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
349 SYS_UWORD8 char_received;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
350
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
351 #if (BOARD != 34)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
352 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
353 * Since new characters have been received, the sleep timer is reset then
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
354 * restarted preventing the system to enter deep-sleep for a new period of
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
355 * time.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
356 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
357
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
358 SER_activate_timer_hisr ();
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
359 uart_sleep_timer_enabled = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
360 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
361
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
362 status = READ_UART_REGISTER (uart, LSR);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
363
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
364 while (status & DR) { /* While RX FIFO is not empty... */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
365
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
366 error_detected = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
367
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
368 char_received = READ_UART_REGISTER (uart, RHR);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
369
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
370 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
371 * Check if an error (overrun, parity, framing or break) is associated with the
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
372 * received data. If there is an error the byte is not copied into the
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
373 * RX buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
374 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
375
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
376 if (status & (OE | PE | FE | BI)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
377
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
378 if (status & PE)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
379 uart->parity_error++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
380
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
381 if (status & FE)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
382 uart->framing_error++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
383
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
384 if (status & OE)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
385 uart->overrun_error++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
386
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
387 error_detected = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
388 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
389
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
390 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
391 * If there is no error the byte is copied into the RX
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
392 * buffer if it is not full.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
393 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
394
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
395 if (!error_detected && !RX_BUFFER_FULL (uart)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
396
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
397 *(uart->rx_in++) = char_received;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
398
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
399 if (uart->rx_in == &(uart->rx_buffer[0]) + BUFFER_SIZE + 1)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
400 uart->rx_in = &(uart->rx_buffer[0]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
401
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
402 #ifdef UART_RX_BUFFER_DUMP
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
403 *(uart_rx_buffer_dump.rx_in)++ = char_received;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
404
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
405 if (uart_rx_buffer_dump.rx_in == uart_rx_buffer_dump.rx_buffer + sizeof (uart_rx_buffer_dump.rx_buffer))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
406 uart_rx_buffer_dump.rx_in = uart_rx_buffer_dump.rx_buffer;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
407 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
408 else {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
409 uart_rx_buffer_dump.errors_count++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
410 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
411 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
412
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
413 status = READ_UART_REGISTER (uart, LSR);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
414 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
415
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
416 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
417 * Call the user's function.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
418 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
419
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
420 if (uart->callback_function != NULL)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
421 (*(uart->callback_function)) ();
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
422 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
423
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
424 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
425 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
426 * initialize_uart_sleep
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
427 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
428 * Purpose : Performs basic UART hardware initialization including sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
429 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
430 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
431 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
432 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
433 * Returns: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
434 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
435 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
436 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
437 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
438
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
439 void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
440 initialize_uart_sleep (T_tr_UartId uart_id)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
441 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
442 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
443 int index;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
444 SYS_UWORD8 dummy;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
445
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
446 for (index = 0; index < NUMBER_OF_TR_UART; index++)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
447 uart_parameter[index].base_address = base_address[index];
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
448
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
449 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
450
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
451 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
452 * Mask all interrupts causes and disable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
453 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
454
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
455 WRITE_UART_REGISTER (uart, IER, 0x00);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
456
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
457 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
458 * Reset UART mode configuration.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
459 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
460
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
461 WRITE_UART_REGISTER (uart, MDR1, RESET_DEFAULT_STATE);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
462
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
463 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
464 * LCR[7:0] = 0xBF to allow to access EFR
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
465 * EFR[4] = 1 to allow to program IER[4].
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
466 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
467
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
468 WRITE_UART_REGISTER (uart, LCR, 0xBF);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
469 SET_BIT (uart, EFR, ENHANCED_FEATURE_BIT);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
470 WRITE_UART_REGISTER (uart, LCR, 0x83);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
471
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
472 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
473 * Enable FIFO and reset them.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
474 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
475
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
476 WRITE_UART_REGISTER (uart, FCR, FIFO_ENABLE |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
477 RX_FIFO_RESET |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
478 TX_FIFO_RESET);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
479
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
480 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
481 * Program the baud generator (dummy 115200).
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
482 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
483
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
484 WRITE_UART_REGISTER (uart, DLL, 0x07);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
485 WRITE_UART_REGISTER (uart, DLM, 0x00);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
486
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
487 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
488 * LCR[7] = 0 to allow to access IER and RHR - normal mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
489 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
490
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
491 RESET_BIT (uart, LCR, DIV_EN_BIT);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
492
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
493 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
494 * Select UART mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
495 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
496
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
497 WRITE_UART_REGISTER (uart, MDR1, UART_MODE);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
498
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
499 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
500 * Clear Interrupt and check that Rx FIFO is empty.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
501 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
502
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
503 dummy = READ_UART_REGISTER (uart, IIR);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
504
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
505 while (READ_UART_REGISTER (uart, LSR) & DR)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
506 dummy = READ_UART_REGISTER (uart, RHR);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
507
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
508 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
509 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
510 * Enable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
511 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
512
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
513 WRITE_UART_REGISTER (uart, IER, IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
514 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
515 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
516
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
517
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
518 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
519 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
520 * UA_Init
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
521 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
522 * Purpose : Initializes the module and the UART.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
523 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
524 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
525 * baudrate: baud rate selected.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
526 * callback: user's function called characters are received.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
527 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
528 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
529 * Returns: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
530 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
531 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
532 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
533 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
534
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
535 void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
536 UA_Init (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
537 T_tr_Baudrate baudrate,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
538 void (callback_function (void)))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
539 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
540 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
541 int index;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
542
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
543 #ifdef UART_RX_BUFFER_DUMP
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
544 uart_rx_buffer_dump.rx_in = uart_rx_buffer_dump.rx_buffer;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
545 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
546
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
547 for (index = 0; index < NUMBER_OF_TR_UART; index++)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
548 uart_parameter[index].base_address = base_address[index];
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
549
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
550 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
551
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
552 uart->rx_in = &(uart->rx_buffer[0]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
553 uart->rx_out = &(uart->rx_buffer[0]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
554
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
555 uart->callback_function = callback_function;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
556
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
557 uart->framing_error = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
558 uart->parity_error = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
559 uart->overrun_error = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
560
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
561 uart->dle_detected = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
562 uart->inframe = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
563 uart->encapsulation_flag = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
564 uart->frame_length = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
565
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
566 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
567 * Mask all interrupts causes and disable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
568 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
569
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
570 WRITE_UART_REGISTER (uart, IER, 0x00);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
571
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
572 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
573 * Reset UART mode configuration.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
574 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
575
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
576 WRITE_UART_REGISTER (uart, MDR1, RESET_DEFAULT_STATE |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
577 IR_SLEEP_DISABLED |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
578 SIR_TX_WITHOUT_ACREG2 |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
579 FRAME_LENGTH_METHOD);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
580
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
581 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
582 * FIFO configuration.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
583 * EFR[4] = 1 to allow to program FCR[5:4] and MCR[7:5].
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
584 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
585
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
586 WRITE_UART_REGISTER (uart, LCR, 0xBF);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
587 SET_BIT (uart, EFR, ENHANCED_FEATURE_BIT);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
588
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
589 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
590 * Select the word length, the number of stop bits , the parity and set
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
591 * LCR[7] (DLAB) to allow to program FCR, DLL and DLM.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
592 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
593
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
594 WRITE_UART_REGISTER (uart, LCR, WLS_8 | DLAB);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
595
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
596 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
597 * Program the trigger levels.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
598 * MCR[6] must be set to 1.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
599 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
600
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
601 SET_BIT (uart, MCR, TCR_TLR_BIT);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
602 WRITE_UART_REGISTER (uart, TCR, 0x0F);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
603 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
604 uart, TLR, RX_FIFO_TRIGGER_LEVEL);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
605
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
606 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
607 * Program the FIFO control register. Bit 0 must be set when other FCR bits
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
608 * are written to or they are not programmed.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
609 * FCR is a write-only register. It will not be modified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
610 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
611
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
612 WRITE_UART_REGISTER (uart, FCR, FIFO_ENABLE |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
613 RX_FIFO_RESET | /* self cleared */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
614 TX_FIFO_RESET); /* self cleared */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
615
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
616 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
617 * Program the baud generator.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
618 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
619
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
620 WRITE_UART_REGISTER (uart, DLL, dll[baudrate]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
621 WRITE_UART_REGISTER (uart, DLM, dlh[baudrate]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
622
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
623
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
624 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
625 * Reset LCR[7] (DLAB) to have access to the RBR, THR and IER registers.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
626 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
627
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
628 WRITE_UART_REGISTER (uart, LCR, READ_UART_REGISTER (uart, LCR) & ~DLAB);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
629
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
630
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
631 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
632 * Select UART mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
633 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
634
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
635 WRITE_UART_REGISTER (uart, MDR1, UART_MODE |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
636 IR_SLEEP_DISABLED |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
637 SIR_TX_WITHOUT_ACREG2 |
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
638 FRAME_LENGTH_METHOD);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
639
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
640 #if ((CHIPSET == 5) || (CHIPSET == 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
641 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
642 * Unmask RX interrupt
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
643 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
644
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
645 WRITE_UART_REGISTER (uart, IER, ERBI);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
646 #else
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
647 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
648 * Unmask RX interrupt and allow sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
649 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
650
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
651 WRITE_UART_REGISTER (uart, IER, ERBI | IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
652 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
653 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
654
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
655 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
656 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
657 * UA_ReadNChars
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
658 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
659 * Purpose : Reads N characters from the RX buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
660 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
661 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
662 * buffer : buffer address where the characters are
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
663 * copied.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
664 * chars_to_read: number of characters to read.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
665 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
666 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
667 * Returns : The number of characters read.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
668 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
669 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
670 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
671 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
672
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
673 SYS_UWORD32
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
674 UA_ReadNChars (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
675 char *buffer,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
676 SYS_UWORD32 chars_to_read)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
677 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
678 SYS_UWORD32 chars_in_rx_buffer;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
679 SYS_UWORD32 chars_to_copy;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
680 SYS_UWORD32 chars_written;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
681 char *rx_in;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
682 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
683
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
684 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
685
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
686 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
687 * A copy of the rx_in pointer is used because it may be updated by
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
688 * the interrupt handler.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
689 * Get the number of bytes available in the RX buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
690 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
691
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
692 rx_in = uart->rx_in;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
693
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
694 if (uart->rx_out <= rx_in)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
695 chars_in_rx_buffer = (SYS_UWORD32) (rx_in - uart->rx_out);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
696 else
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
697 chars_in_rx_buffer = (SYS_UWORD32) (rx_in - uart->rx_out + BUFFER_SIZE + 1);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
698
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
699 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
700 * No more bytes than those received may be written in the output buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
701 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
702
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
703 if (chars_in_rx_buffer >= chars_to_read)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
704 chars_to_copy = chars_to_read;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
705 else
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
706 chars_to_copy = chars_in_rx_buffer;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
707
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
708 chars_written = chars_to_copy;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
709
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
710 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
711 * Write the received bytes in the output buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
712 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
713
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
714 while (chars_to_copy) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
715
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
716 *(buffer++) = *(uart->rx_out++);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
717 chars_to_copy--;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
718
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
719 if (uart->rx_out == &(uart->rx_buffer[0]) + BUFFER_SIZE + 1)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
720 uart->rx_out = &(uart->rx_buffer[0]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
721 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
722
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
723 return (chars_written);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
724 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
725
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
726 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
727 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
728 * UA_ReadNBytes
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
729 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
730 * Purpose : Reads and destuff N bytes from the RX buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
731 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
732 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
733 * buffer : buffer address where the bytes are copied.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
734 * chars_to_read: number of bytes to read.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
735 * Out: eof_detected : indicates if an EOF has been detected. Possible
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
736 * values are:
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
737 * - 0: EOF not detected,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
738 * - 1: EOF detected and no more bytes left,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
739 * - 2: EOF not detected and more bytes left.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
740 * Users must invoke this function one more
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
741 * time in order to get those remaining
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
742 * bytes,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
743 * - 3: EOF detected and more bytes left. Users
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
744 * must invoke this function one more time
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
745 * in order to get those remaining bytes.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
746 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
747 * Returns : The number of bytes read.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
748 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
749 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
750 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
751 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
752
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
753 SYS_UWORD32
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
754 UA_ReadNBytes (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
755 char *buffer_p,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
756 SYS_UWORD32 bytes_to_read,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
757 SYS_BOOL *eof_detected_p)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
758 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
759 SYS_UWORD32 bytes_written;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
760 SYS_UWORD32 bytes_in_rx_buffer;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
761 SYS_UWORD32 bytes_to_process;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
762 t_uart *uart_p;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
763 char *rx_in_p;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
764
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
765 bytes_written = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
766 uart_p = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
767
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
768 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
769 * A copy of the rx_in pointer is used because it may be updated by
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
770 * the interrupt handler.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
771 * Get the number of bytes available in the RX buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
772 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
773
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
774 rx_in_p = uart_p->rx_in;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
775
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
776 if (uart_p->rx_out <= rx_in_p)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
777 bytes_in_rx_buffer = (SYS_UWORD32) (rx_in_p - uart_p->rx_out);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
778 else
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
779 bytes_in_rx_buffer = (SYS_UWORD32) (rx_in_p - uart_p->rx_out + BUFFER_SIZE + 1);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
780
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
781 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
782 * No more bytes than those received may be processed and then written
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
783 * in the output buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
784 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
785
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
786 if (bytes_in_rx_buffer > bytes_to_read) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
787 bytes_to_process = bytes_to_read;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
788
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
789 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
790 * More bytes left. Users must invoke this function one more time
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
791 * in order to get those remaining bytes.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
792 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
793
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
794 *eof_detected_p = 2;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
795 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
796 else {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
797 bytes_to_process = bytes_in_rx_buffer;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
798
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
799 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
800 * No more bytes left.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
801 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
802
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
803 *eof_detected_p = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
804 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
805
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
806 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
807 * Perform the byte destuffing and then write the "valid" received bytes in
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
808 * the output buffer.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
809 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
810
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
811 while ((bytes_to_process) && !(*eof_detected_p & 0x01)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
812
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
813 switch (*(uart_p->rx_out)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
814
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
815 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
816 * Current byte is DLE.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
817 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
818
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
819 case DLE:
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
820
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
821 if (!uart_p->dle_detected) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
822
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
823 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
824 * No DLE previously detected =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
825 * Skip the current byte and set the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
826 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
827
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
828 uart_p->dle_detected = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
829 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
830 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
831
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
832 else { /* if (uart_p->dle_detected) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
833
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
834 if (uart_p->inframe) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
835
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
836 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
837 * DLE previously detected AND currently inside of a frame =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
838 * Copy the current byte in the output buffer, reset the flag
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
839 * and increase the frame length.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
840 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
841
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
842 uart_p->dle_detected = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
843 uart_p->frame_length++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
844 *(buffer_p++) = *(uart_p->rx_out++);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
845 bytes_written++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
846 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
847
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
848 else { /* if (!uart_p->inframe) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
849
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
850 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
851 * DLE previously detected AND currently outside of a frame =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
852 * Skip the current byte.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
853 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
854
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
855 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
856 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
857 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
858
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
859 break; /* case DLE */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
860
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
861 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
862 * Current byte is STX.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
863 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
864
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
865 case STX:
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
866
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
867 if ((!uart_p->dle_detected) && (uart_p->inframe)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
868
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
869 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
870 * No DLE previously detected AND currently inside of a frame.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
871 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
872
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
873 if (uart_p->frame_length) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
874
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
875 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
876 * Frame length is not zero (End of Frame) =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
877 * Skip the current byte and set the flags (EOF).
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
878 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
879
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
880 uart_p->inframe = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
881 uart_p->frame_length = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
882 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
883
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
884 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
885 * More bytes left.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
886 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
887
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
888 if ((*eof_detected_p == 0) && (bytes_to_process))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
889 *eof_detected_p = 2;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
890
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
891 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
892 * EOF detected.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
893 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
894
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
895 (*eof_detected_p)++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
896 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
897
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
898 else { /* if (!uart_p->frame_length) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
899
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
900 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
901 * Frame length is zero (STX followed by another STX =
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
902 * Synchro lost but start of a new frame) =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
903 * Skip the current byte and keep the flag set.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
904 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
905
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
906 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
907 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
908 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
909
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
910 else if ((!uart_p->dle_detected) && (!uart_p->inframe)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
911
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
912 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
913 * No DLE previously detected AND currently outside of a
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
914 * frame (Start of Frame) =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
915 * Skip the current byte and set the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
916 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
917
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
918 uart_p->inframe = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
919 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
920 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
921
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
922 else if ((uart_p->dle_detected) && (uart_p->inframe)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
923
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
924 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
925 * DLE previously detected AND currently inside of a frame =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
926 * Copy the current byte in the output buffer, reset the flag
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
927 * and increase the frame length.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
928 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
929
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
930 uart_p->dle_detected = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
931 uart_p->frame_length++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
932 *(buffer_p++) = *(uart_p->rx_out++);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
933 bytes_written++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
934 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
935
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
936 else if ((uart_p->dle_detected) && (!uart_p->inframe)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
937
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
938 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
939 * DLE previously detected AND currently outside of a frame =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
940 * Skip the current byte and reset the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
941 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
942
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
943 uart_p->dle_detected = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
944 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
945 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
946
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
947 break; /* case STX */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
948
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
949 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
950 * Current byte is neither DLE nor STX.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
951 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
952
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
953 default:
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
954
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
955 if (uart_p->inframe) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
956
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
957 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
958 * Currently inside of a frame =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
959 * Copy the current byte in the output buffer and increase
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
960 * the frame length.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
961 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
962
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
963 uart_p->frame_length++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
964 *(buffer_p++) = *(uart_p->rx_out++);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
965 bytes_written++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
966 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
967
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
968 else { /* if (!uart_p->inframe) */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
969
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
970 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
971 * Currently outside of a frame =>
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
972 * Skip the current byte.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
973 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
974
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
975 uart_p->rx_out++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
976 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
977
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
978 break; /* default */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
979 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
980
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
981 if (uart_p->rx_out == &(uart_p->rx_buffer[0]) + BUFFER_SIZE + 1)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
982 uart_p->rx_out = &(uart_p->rx_buffer[0]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
983
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
984 bytes_to_process--;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
985 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
986
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
987 return (bytes_written);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
988 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
989
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
990
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
991 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
992 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
993 * UA_WriteNChars
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
994 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
995 * Purpose : Writes N characters in the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
996 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
997 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
998 * buffer : buffer address from which characters are
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
999 * written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1000 * bytes_to_write: number of bytes to write.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1001 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1002 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1003 * Returns : Number of bytes written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1004 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1005 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1006 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1007 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1008
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1009 SYS_UWORD32
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1010 UA_WriteNChars (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1011 char *buffer,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1012 SYS_UWORD32 chars_to_write)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1013 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1014 SYS_UWORD32 chars_in_tx_fifo;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1015 SYS_UWORD32 chars_written;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1016 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1017
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1018 chars_written = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1019 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1020
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1021 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1022 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1023 * Disable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1024 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1025
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1026 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1027 uart, IER, READ_UART_REGISTER (uart, IER) & ~IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1028 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1029
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1030 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1031 * Copy the input buffer to the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1032 * Ulyssse Bug #44: TX FIFO full status bit (SSR[1]) is corrupted during
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1033 * one period of Bclock => Workaround S/W.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1034 * Write in TX FIFO only if FIFO is empty instead of writing in TX FIFO
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1035 * while FIFO is not full.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1036 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1037
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1038 if (READ_UART_REGISTER (uart, LSR) & THRE) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1039
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1040 chars_in_tx_fifo = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1041
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1042 while ((chars_written < chars_to_write) &&
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1043 (chars_in_tx_fifo < FIFO_SIZE)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1044
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1045 WRITE_UART_REGISTER (uart, THR, *(buffer++));
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1046 chars_written++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1047 chars_in_tx_fifo++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1048 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1049 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1050
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1051 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1052 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1053 * Re-enable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1054 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1055
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1056 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1057 uart, IER, READ_UART_REGISTER (uart, IER) | IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1058 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1059
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1060 return (chars_written);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1061 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1062
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1063
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1064 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1065 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1066 * UA_EncapsulateNChars
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1067 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1068 * Purpose : Writes N characters in the TX FIFO in encapsulating them with 2
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1069 * STX bytes (one at the beginning and one at the end).
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1070 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1071 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1072 * buffer : buffer address from which characters are
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1073 * written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1074 * chars_to_write: number of chars to write.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1075 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1076 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1077 * Returns : Number of chars written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1078 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1079 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1080 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1081 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1082
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1083 SYS_UWORD32
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1084 UA_EncapsulateNChars (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1085 char *buffer,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1086 SYS_UWORD32 chars_to_write)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1087 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1088 SYS_UWORD32 chars_written;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1089 SYS_UWORD32 chars_in_tx_fifo;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1090 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1091
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1092 chars_written = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1093 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1094
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1095 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1096 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1097 * Disable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1098 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1099
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1100 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1101 uart, IER, READ_UART_REGISTER (uart, IER) & ~IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1102 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1103
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1104 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1105 * Copy the input buffer to the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1106 * Ulyssse Bug #44: TX FIFO full status bit (SSR[1]) is corrupted during
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1107 * one period of Bclock => Workaround S/W.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1108 * Write in TX FIFO only if FIFO is empty instead of writing in TX FIFO
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1109 * while FIFO is not full.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1110 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1111
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1112 if (READ_UART_REGISTER (uart, LSR) & THRE) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1113
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1114 chars_in_tx_fifo = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1115
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1116 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1117 * Check if the message has been already encapsulated.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1118 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1119
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1120 if (!uart->encapsulation_flag) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1121 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1122 * Write STX in the TX FIFO and set the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1123 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1124
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1125 WRITE_UART_REGISTER (uart, THR, STX);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1126 chars_in_tx_fifo++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1127 uart->encapsulation_flag = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1128 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1129
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1130 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1131 * Keep one char margin in the TX FIFO for the last STX.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1132 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1133
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1134 while ((chars_written < chars_to_write) &&
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1135 (chars_in_tx_fifo < (FIFO_SIZE-1))) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1136
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1137 WRITE_UART_REGISTER (uart, THR, *(buffer++));
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1138 chars_written++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1139 chars_in_tx_fifo++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1140 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1141
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1142 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1143 * Append STX byte at the end if the frame is complete.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1144 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1145
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1146 if (chars_written == chars_to_write) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1147
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1148 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1149 * Write STX in the TX FIFO and reset the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1150 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1151
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1152 WRITE_UART_REGISTER (uart, THR, STX);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1153 uart->encapsulation_flag = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1154 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1155 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1156
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1157 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1158 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1159 * Re-enable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1160 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1161
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1162 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1163 uart, IER, READ_UART_REGISTER (uart, IER) | IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1164 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1165
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1166 return (chars_written);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1167 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1168
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1169
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1170 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1171 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1172 * UA_WriteNBytes
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1173 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1174 * Purpose : Writes N bytes in the TX FIFO in encapsulating with 2 STX bytes
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1175 * at the beginning and the end of the frame, and in making byte
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1176 * stuffing.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1177 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1178 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1179 * buffer : buffer address from which bytes are
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1180 * written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1181 * bytes_to_write: number of bytes to write.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1182 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1183 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1184 * Returns : Number of bytes written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1185 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1186 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1187 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1188 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1189
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1190 SYS_UWORD32
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1191 UA_WriteNBytes (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1192 SYS_UWORD8 *buffer,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1193 SYS_UWORD32 bytes_to_write)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1194 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1195 SYS_UWORD32 bytes_written;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1196 SYS_UWORD32 bytes_in_tx_fifo;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1197 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1198
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1199 bytes_written = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1200 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1201
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1202 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1203 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1204 * Disable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1205 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1206
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1207 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1208 uart, IER, READ_UART_REGISTER (uart, IER) & ~IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1209 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1210
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1211 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1212 * Copy the input buffer to the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1213 * Ulyssse Bug #44: TX FIFO full status bit (SSR[1]) is corrupted during
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1214 * one period of Bclock => Workaround S/W.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1215 * Write in TX FIFO only if FIFO is empty instead of writing in TX FIFO
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1216 * while FIFO is not full.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1217 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1218
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1219 if (READ_UART_REGISTER (uart, LSR) & THRE) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1220
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1221 bytes_in_tx_fifo = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1222
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1223 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1224 * Check if the message has been already encapsulated.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1225 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1226
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1227 if (!uart->encapsulation_flag) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1228
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1229 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1230 * Write STX in the TX FIFO and set the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1231 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1232
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1233 WRITE_UART_REGISTER (uart, THR, STX);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1234 bytes_in_tx_fifo++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1235 uart->encapsulation_flag = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1236 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1237
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1238 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1239 * Keep 2 chars margin in the FIFO, one for the stuffing (if necessary)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1240 * and one for the last STX.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1241 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1242
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1243 while ((bytes_written < bytes_to_write) &&
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1244 (bytes_in_tx_fifo < (FIFO_SIZE-2))) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1245
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1246 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1247 * Check for STX or DLE in order to perform the stuffing.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1248 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1249
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1250 if ((*(buffer) == STX) || (*(buffer) == DLE)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1251
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1252 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1253 * Write DLE in the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1254 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1255
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1256 WRITE_UART_REGISTER (uart, THR, DLE);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1257 bytes_in_tx_fifo++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1258 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1259
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1260 WRITE_UART_REGISTER (uart, THR, *(buffer++));
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1261 bytes_written++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1262 bytes_in_tx_fifo++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1263 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1264
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1265 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1266 * Append STX byte at the end if the frame is complete.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1267 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1268
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1269 if (bytes_written == bytes_to_write) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1270
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1271 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1272 * Write STX in the TX FIFO and reset the flag.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1273 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1274
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1275 WRITE_UART_REGISTER (uart, THR, STX);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1276 uart->encapsulation_flag = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1277 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1278 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1279
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1280 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1281 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1282 * Re-enable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1283 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1284
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1285 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1286 uart, IER, READ_UART_REGISTER (uart, IER) | IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1287 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1288
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1289 return (bytes_written);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1290 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1291
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1292
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1293 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1294 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1295 * UA_WriteChar
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1296 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1297 * Purpose : Writes a character in the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1298 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1299 * Arguments: In : uart: UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1300 * character
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1301 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1302 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1303 * Returns : none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1304 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1305 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1306 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1307 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1308
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1309 void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1310 UA_WriteChar (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1311 char character)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1312 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1313 (void) UA_WriteNChars (uart_id, &character, 1);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1314 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1315
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1316 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1317 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1318 * UA_WriteString
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1319 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1320 * Purpose : Writes a null terminated string in the TX FIFO.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1321 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1322 * Arguments: In : uart_id: UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1323 * buffer : buffer address from which characters are written.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1324 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1325 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1326 * Returns : none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1327 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1328 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1329 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1330 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1331
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1332 void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1333 UA_WriteString (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1334 char *buffer)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1335 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1336 (void) UA_WriteNChars (uart_id, buffer, strlen (buffer));
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1337 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1338
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1339 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1340 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1341 * UA_EnterSleep
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1342 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1343 * Purpose : Checks if UART is ready to enter Deep Sleep. If ready, enables
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1344 * wake-up interrupt.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1345 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1346 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1347 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1348 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1349 * Returns: 0 : Deep Sleep is not possible.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1350 * >= 1 : Deep Sleep is possible.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1351 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1352 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1353 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1354 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1355
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1356 SYS_BOOL
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1357 UA_EnterSleep (T_tr_UartId uart_id)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1358 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1359 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1360 SYS_BOOL deep_sleep;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1361 volatile SYS_UWORD8 status;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1362
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1363 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1364 deep_sleep = 0;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1365
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1366 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1367 * Check if RX & TX FIFOs are both empty
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1368 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1369
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1370 status = READ_UART_REGISTER (uart, LSR);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1371
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1372 if (!(status & DR) &&
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1373 (status & TEMT)) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1374
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1375 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1376 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1377 * Disable sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1378 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1379
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1380 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1381 uart, IER, READ_UART_REGISTER (uart, IER) & ~IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1382 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1383
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1384 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1385 * Mask RX interrupt.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1386 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1387
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1388 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1389 uart, IER, READ_UART_REGISTER (uart, IER) & ~ERBI);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1390
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1391 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1392 * Enable the wake-up interrupt.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1393 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1394
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1395 ENABLE_WAKEUP_INTERRUPT (uart);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1396
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1397 deep_sleep = 1;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1398 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1399
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1400 return (deep_sleep);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1401 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1402
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1403 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1404 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1405 * UA_WakeUp
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1406 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1407 * Purpose : Wakes up UART after Deep Sleep.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1408 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1409 * Arguments: In : uart_id : UART id.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1410 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1411 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1412 * Returns: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1413 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1414 * Warning: Parameters are not verified.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1415 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1416 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1417
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1418 void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1419 UA_WakeUp (T_tr_UartId uart_id)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1420 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1421 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1422
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1423 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1424
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1425 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1426 * Disable the wake-up interrupt.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1427 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1428
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1429 DISABLE_WAKEUP_INTERRUPT (uart);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1430
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1431 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1432 * Unmask RX interrupts.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1433 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1434
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1435 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1436 uart, IER, READ_UART_REGISTER (uart, IER) | ERBI);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1437
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1438 #if ((CHIPSET != 5) && (CHIPSET != 6))
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1439 /*
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1440 * Allow sleep mode.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1441 */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1442
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1443 WRITE_UART_REGISTER (
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1444 uart, IER, READ_UART_REGISTER (uart, IER) | IER_SLEEP);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1445 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1446 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1447
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1448 /*******************************************************************************
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1449 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1450 * UA_InterruptHandler
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1451 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1452 * Purpose : Interrupt handler.
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1453 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1454 * Arguments: In : uart_id : origin of interrupt
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1455 * interrupt_status: source of interrupt
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1456 * Out: none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1457 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1458 * Returns : none
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1459 *
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1460 ******************************************************************************/
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1461
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1462 void
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1463 UA_InterruptHandler (T_tr_UartId uart_id,
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1464 SYS_UWORD8 interrupt_status)
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1465 {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1466 t_uart *uart;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1467
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1468 uart = &(uart_parameter[uart_id]);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1469
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1470 switch (interrupt_status) {
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1471
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1472 case RX_DATA:
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1473
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1474 read_rx_fifo (uart);
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1475
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1476 break;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1477
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1478 default:
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1479
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1480 #ifdef UART_RX_BUFFER_DUMP
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1481 uart_rx_buffer_dump.wrong_interrupt_status++;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1482 #endif
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1483
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1484 /* No Processing */
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1485
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1486 break;
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1487 }
22c8199e08af started integrating TI's serial code
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
parents:
diff changeset
1488 }