FreeCalypso > hg > fc-magnetite

annotate src/cs/drivers/drv_app/r2d/board/uwire.c @ 695:530f71d65c20

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uartfax.c: pull from Tourmaline (GTM900 RI output) In addition to the primary intent of bringing in GTM900 RI output support, pulling uartfax.c wholesale from Tourmaline also changes the initial_time argument in the two NU_Create_Timer() calls from 0 to 1. This change is required for the new version of Nucleus used in Tourmaline and Selenite (and apparently also used by TI in LoCosto), and it is harmless (no effect) for the original TCS211 version of Nucleus used in Magnetite. The new philosophical model being adopted is that Tourmaline is our new development head firmware, whereas Magnetite will now be maintained similarly to how Linux maintainers treat stable kernels: changes will be backported from Tourmaline if they are deemed appropriate for stable modem firmware.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 24 Oct 2020 17:33:10 +0000
parents 945cf7f506b2
children
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1 /************************************************************************************
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2 * uwire.c : contains driver for the uwire HD module *
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3 * *
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4 * *
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5 * Author: Davide Carpegna *
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6 * *
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7 * version: 1.0 *
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8 * *
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9 * Date: 22/09/2000 *
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10 * (C) Copyright 2000 by Texas Instruments Incorporated, All Rights Reserved *
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11 ************************************************************************************/
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12
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13 #include "rv/general.h"
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14 #include "r2d/uwire.h"
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15 #include "rvf/rvf_api.h"
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16
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17 /********************************************************************/
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18 /* set the DC input to low for command transmission */
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19 /* */
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20 /********************************************************************/
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21 void set_DC_low(void)
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22 {
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23 * (volatile UINT16 *) GPIO_OUT &= ~(0x02); //gpio(1) ->0
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24 }
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25
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26 /********************************************************************/
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27 /* set the DC input to high for data transmission */
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28 /* */
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29 /********************************************************************/
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30 void set_DC_high(void)
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31 {
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32 * (volatile UINT16 *) GPIO_OUT |= 0x02; //gpio(1) ->1
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33 }
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34
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35 /********************************************************************/
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36 /* transmit commands to the lcd */
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37 /* */
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38 /********************************************************************/
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39 void lcd_transmit_cmd(UINT8 cmd)
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40 {
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41 set_DC_low();
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42 * (volatile UINT16 *) TDR = cmd <<8;
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43 * (volatile UINT16 *) CSR |= NB_BITS_WR_8 + CS_CMD + START ; // transmit command data
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44 while (((* (volatile UINT16 *) CSR) & CSRB) != 0 ); // wait for end of WRITE
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45 * (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select
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46 }
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47
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48 /********************************************************************/
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49 /* transmit data to the lcd */
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50 /* */
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51 /********************************************************************/
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52 void lcd_transmit_data(UINT8 data)
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53 {
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54 set_DC_high();
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55 * (volatile UINT16 *) TDR = data <<8;
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56 * (volatile UINT16 *) CSR |= NB_BITS_WR_8 + CS_CMD + START ; // transmit data
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57 //while (((* (volatile UINT16 *) CSR) & CSRB) != 0 ); // wait for end of WRITE
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58 //* (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select
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59 }
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60
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61 extern BOOLEAN lcd_polling(void)
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62 {
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63 if (((* (volatile UINT16 *) CSR) & CSRB) == 0 )
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64 {
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65 * (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select
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66 return(TRUE);
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67 }
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68 else
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69 return(FALSE);
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70 }
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71
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72 /********************************************************************/
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73 /* initialize the uwire parameters for the lcd */
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74 /* */
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75 /********************************************************************/
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76 void uwire_init_lcd()
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77 {
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78 * ( UINT16 *) GPIO_INOUT &= ~(0x0002); // configures gpio(1) in output mode
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79
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80 * ( UINT16 *) CNTL_RST &= ~(0x04); // releases reset_out
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81 * ( UINT16 *) CNTL_RST |= (0x04); // set reset_out to 0
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82 rvf_delay(RVF_MS_TO_TICKS(1)); // waits for 5 ms
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83 * ( UINT16 *) CNTL_RST &= ~(0x04); // releases reset_out
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84
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85
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86 * (volatile UINT16 *) SR1 = CS1_FRQ_FINT_4 ; // F_INT/4 -> 13M/4 = 3.25 Mhz
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87 * (volatile UINT16 *) SR3 = SR3_CLK_EN; // enables the uwire clock
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88 * (volatile UINT16 *) CSR = INDEX_CS1; // selects CS1
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89 }
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92