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comparison chipsetsw/drivers/drv_app/r2d/lcds/E_Sample/lcd_if32.c @ 0:509db1a7b7b8

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initial import: leo2moko-r1
author Space Falcon <falcon@ivan.Harhan.ORG>
date Mon, 01 Jun 2015 03:24:05 +0000
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-1:000000000000 0:509db1a7b7b8
1 /******************************************************************************
2 * WIRELESS COMMUNICATION SYSTEM DEVELOPMENT
3 *
4 * (C) 2002 Texas Instruments France. All rights reserved
5 *
6 * Author : Philippe MARTINEZ
7 *
8 *
9 * Important Note
10 * --------------
11 *
12 * This S/W is a preliminary version. It contains information on a product
13 * under development and is issued for evaluation purposes only. Features
14 * characteristics, data and other information are subject to change.
15 *
16 * The S/W is furnished under Non Disclosure Agreement and may be used or
17 * copied only in accordance with the terms of the agreement. It is an offence
18 * to copy the software in any way except as specifically set out in the
19 * agreement. No part of this document may be reproduced or transmitted in any
20 * form or by any means, electronic or mechanical, including photocopying and
21 * recording, for any purpose without the express written permission of Texas
22 * Instruments Inc.
23 *
24 ******************************************************************************
25 *
26 * FILE NAME: lcd_if32.c
27 *
28 *
29 * PURPOSE: LCD Interface driver compiled in 32-bits mode (ARM mode)
30 *
31 *
32 * FILE REFERENCES:
33 *
34 * Name IO Description
35 * ------------- -- ---------------------------------------------
36 *
37 *
38 *
39 * EXTERNAL VARIABLES:
40 *
41 * Source:
42 *
43 * Name Type IO Description
44 * ------------- --------------- -- ------------------------------
45 *
46 *
47 *
48 * EXTERNAL REFERENCES:
49 *
50 * Name Description
51 * ------------------ -------------------------------------------------------
52 *
53 *
54 *
55 * ABNORMAL TERMINATION CONDITIONS, ERROR AND WARNING MESSAGES:
56 *
57 *
58 *
59 * ASSUMPTION, CONSTRAINTS, RESTRICTIONS:
60 *
61 *
62 *
63 * NOTES:
64 *
65 *
66 *
67 * REQUIREMENTS/FUNCTIONAL SPECIFICATION REFERENCES:
68 *
69 *
70 *
71 *
72 * DEVELOPMENT HISTORY:
73 *
74 * Date Name(s) Version Description
75 * ----------- -------------- ------- -------------------------------------
76 * 30-Oct-2002 Philippe MARTINEZ 0.0.1 First implementation
77 *
78 * ALGORITHM:
79 *
80 *
81 *****************************************************************************/
82
83 #include "r2d/lcds/e_sample/lcd_if.h"
84
85 /****************************************************************************
86 * GLOBAL VARIABLES REFERENCE
87 ***************************************************************************/
88
89 /* internal structure instance */
90
91 extern T_LCD_IF_INTERNAL d_lcd_if_internal;
92
93 #if (CHIPSET == 12)
94
95 /******************************************************************************
96 *
97 * FUNCTION NAME: f_lcd_if_it_handler
98 *
99 * LCD Interface Interrupt Handler.
100 *
101 *
102 * ARGUMENT LIST:
103 *
104 * Argument Type IO Description
105 * ------------ ------------------- -- ---------------------------------
106 * None
107 *
108 * RETURN VALUE: None
109 *
110 *****************************************************************************/
111
112 void f_lcd_if_it_handler( void )
113 {
114
115 E_LCD_IF_CALLBACK_RET d_status;
116 SYS_UWORD32 d_nb_words_in_loop = 0;
117 SYS_UWORD8 i = 0;
118
119
120 /* check the d_interrupt_state value and the buffer */
121
122 if( (d_lcd_if_internal.d_interrupt_state == C_LCD_IF_IT_BUFF) &&
123 (d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.d_buffer_size != 0) )
124 {
125 /* Copy up to C_LCD_IF_TX_FIFO_SIZE words into the TX FIFO. */
126
127 if( d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.d_buffer_size >= C_LCD_IF_TX_FIFO_SIZE)
128 {
129 d_nb_words_in_loop = C_LCD_IF_TX_FIFO_SIZE;
130 }
131 else
132 {
133 d_nb_words_in_loop = d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.d_buffer_size;
134 } // End if
135
136 for( i=0; i<d_nb_words_in_loop ;i++ )
137 {
138 F_LCD_IF_WRITE_IN_FIFO( d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.p_buffer[i] );
139 } // End for
140
141 /* update d_nb_words_to copy and p_buffer */
142 d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.d_buffer_size -= d_nb_words_in_loop;
143 d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.p_buffer += d_nb_words_in_loop;
144
145 }
146 else
147 {
148 /* Call the callback function */
149 d_status = (*d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.p_callback)();
150
151 /* disable the LCD Interface TX FIFO if needed */
152 if( d_status == C_LCD_IF_CALLBACK_DISABLE_IT)
153 {
154 F_LCD_IF_DISABLE_TX_FIFO_EMPTY_IT;
155
156 /* set internal state to IDLE */
157 d_lcd_if_internal.d_interrupt_state = C_LCD_IF_IDLE;
158 } // End if
159
160 } // End if
161
162 } /* f_lcd_if_it_handler */
163
164 #endif