FreeCalypso > hg > tcs211-c139

annotate chipsetsw/drivers/drv_app/r2d/board/uwire.c @ 35:2071211e5d1a

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Mot C1xx keypad layout entered
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Wed, 04 Nov 2015 06:18:11 +0000
parents f1ffea823c18
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 /* FreeCalypso C139: code moved into lcds/c139/r2d_task_i.c */
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18 #if 0
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19
0
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20 /********************************************************************/
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21 /* set the DC input to low for command transmission */
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22 /* */
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23 /********************************************************************/
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24 void set_DC_low(void)
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25 {
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26 * (volatile UINT16 *) GPIO_OUT &= ~(0x02); //gpio(1) ->0
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27 }
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28
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29 /********************************************************************/
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30 /* set the DC input to high for data transmission */
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31 /* */
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32 /********************************************************************/
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33 void set_DC_high(void)
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34 {
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35 * (volatile UINT16 *) GPIO_OUT |= 0x02; //gpio(1) ->1
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36 }
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37
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38 /********************************************************************/
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39 /* transmit commands to the lcd */
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40 /* */
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41 /********************************************************************/
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42 void lcd_transmit_cmd(UINT8 cmd)
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43 {
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44 set_DC_low();
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45 * (volatile UINT16 *) TDR = cmd <<8;
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46 * (volatile UINT16 *) CSR |= NB_BITS_WR_8 + CS_CMD + START ; // transmit command data
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47 while (((* (volatile UINT16 *) CSR) & CSRB) != 0 ); // wait for end of WRITE
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48 * (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select
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49 }
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50
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51 /********************************************************************/
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52 /* transmit data to the lcd */
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53 /* */
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54 /********************************************************************/
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55 void lcd_transmit_data(UINT8 data)
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56 {
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57 set_DC_high();
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58 * (volatile UINT16 *) TDR = data <<8;
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59 * (volatile UINT16 *) CSR |= NB_BITS_WR_8 + CS_CMD + START ; // transmit data
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60 //while (((* (volatile UINT16 *) CSR) & CSRB) != 0 ); // wait for end of WRITE
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61 //* (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select
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62 }
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63
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64 extern BOOLEAN lcd_polling(void)
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65 {
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66 if (((* (volatile UINT16 *) CSR) & CSRB) == 0 )
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67 {
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68 * (volatile UINT16 *) CSR &= ~CS_CMD; // clears Chip Select
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69 return(TRUE);
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70 }
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71 else
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72 return(FALSE);
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73 }
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74
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75 /********************************************************************/
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76 /* initialize the uwire parameters for the lcd */
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77 /* */
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78 /********************************************************************/
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79 void uwire_init_lcd()
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80 {
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81 * ( UINT16 *) GPIO_INOUT &= ~(0x0002); // configures gpio(1) in output mode
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82
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83 * ( UINT16 *) CNTL_RST &= ~(0x04); // releases reset_out
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84 * ( UINT16 *) CNTL_RST |= (0x04); // set reset_out to 0
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85 rvf_delay(RVF_MS_TO_TICKS(1)); // waits for 5 ms
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86 * ( UINT16 *) CNTL_RST &= ~(0x04); // releases reset_out
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87
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88
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89 * (volatile UINT16 *) SR1 = CS1_FRQ_FINT_4 ; // F_INT/4 -> 13M/4 = 3.25 Mhz
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90 * (volatile UINT16 *) SR3 = SR3_CLK_EN; // enables the uwire clock
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91 * (volatile UINT16 *) CSR = INDEX_CS1; // selects CS1
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92 }
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93
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94 #endif