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annotate src/cs/drivers/drv_app/r2d/lcds/E_Sample/lcd_if32.c @ 0:b6a5e36de839

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src/cs: initial import from Magnetite
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 04:39:26 +0000
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1 /******************************************************************************
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2 * WIRELESS COMMUNICATION SYSTEM DEVELOPMENT
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3 *
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4 * (C) 2002 Texas Instruments France. All rights reserved
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5 *
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6 * Author : Philippe MARTINEZ
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7 *
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8 *
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9 * Important Note
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10 * --------------
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11 *
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12 * This S/W is a preliminary version. It contains information on a product
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13 * under development and is issued for evaluation purposes only. Features
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14 * characteristics, data and other information are subject to change.
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15 *
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16 * The S/W is furnished under Non Disclosure Agreement and may be used or
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17 * copied only in accordance with the terms of the agreement. It is an offence
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18 * to copy the software in any way except as specifically set out in the
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19 * agreement. No part of this document may be reproduced or transmitted in any
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20 * form or by any means, electronic or mechanical, including photocopying and
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21 * recording, for any purpose without the express written permission of Texas
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22 * Instruments Inc.
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23 *
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24 ******************************************************************************
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25 *
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26 * FILE NAME: lcd_if32.c
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27 *
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28 *
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29 * PURPOSE: LCD Interface driver compiled in 32-bits mode (ARM mode)
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30 *
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31 *
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32 * FILE REFERENCES:
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33 *
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34 * Name IO Description
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35 * ------------- -- ---------------------------------------------
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36 *
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37 *
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38 *
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39 * EXTERNAL VARIABLES:
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40 *
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41 * Source:
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42 *
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43 * Name Type IO Description
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44 * ------------- --------------- -- ------------------------------
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45 *
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46 *
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47 *
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48 * EXTERNAL REFERENCES:
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49 *
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50 * Name Description
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51 * ------------------ -------------------------------------------------------
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52 *
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53 *
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54 *
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55 * ABNORMAL TERMINATION CONDITIONS, ERROR AND WARNING MESSAGES:
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56 *
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57 *
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58 *
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59 * ASSUMPTION, CONSTRAINTS, RESTRICTIONS:
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60 *
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61 *
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62 *
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63 * NOTES:
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64 *
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65 *
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66 *
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67 * REQUIREMENTS/FUNCTIONAL SPECIFICATION REFERENCES:
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68 *
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69 *
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70 *
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71 *
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72 * DEVELOPMENT HISTORY:
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73 *
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74 * Date Name(s) Version Description
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75 * ----------- -------------- ------- -------------------------------------
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76 * 30-Oct-2002 Philippe MARTINEZ 0.0.1 First implementation
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77 *
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78 * ALGORITHM:
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79 *
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80 *
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81 *****************************************************************************/
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82
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83 #include "r2d/lcds/e_sample/lcd_if.h"
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84
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85 /****************************************************************************
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86 * GLOBAL VARIABLES REFERENCE
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87 ***************************************************************************/
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88
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89 /* internal structure instance */
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90
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91 extern T_LCD_IF_INTERNAL d_lcd_if_internal;
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92
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93 #if (CHIPSET == 12)
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94
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95 /******************************************************************************
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96 *
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97 * FUNCTION NAME: f_lcd_if_it_handler
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98 *
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99 * LCD Interface Interrupt Handler.
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100 *
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101 *
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102 * ARGUMENT LIST:
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103 *
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104 * Argument Type IO Description
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105 * ------------ ------------------- -- ---------------------------------
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106 * None
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107 *
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108 * RETURN VALUE: None
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109 *
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110 *****************************************************************************/
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111
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112 void f_lcd_if_it_handler( void )
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113 {
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114
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115 E_LCD_IF_CALLBACK_RET d_status;
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116 SYS_UWORD32 d_nb_words_in_loop = 0;
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117 SYS_UWORD8 i = 0;
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118
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119
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120 /* check the d_interrupt_state value and the buffer */
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121
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122 if( (d_lcd_if_internal.d_interrupt_state == C_LCD_IF_IT_BUFF) &&
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123 (d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.d_buffer_size != 0) )
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124 {
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125 /* Copy up to C_LCD_IF_TX_FIFO_SIZE words into the TX FIFO. */
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126
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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)
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128 {
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129 d_nb_words_in_loop = C_LCD_IF_TX_FIFO_SIZE;
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130 }
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131 else
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132 {
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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;
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134 } // End if
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135
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136 for( i=0; i<d_nb_words_in_loop ;i++ )
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137 {
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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] );
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139 } // End for
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140
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141 /* update d_nb_words_to copy and p_buffer */
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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;
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143 d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.p_buffer += d_nb_words_in_loop;
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144
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145 }
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146 else
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147 {
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148 /* Call the callback function */
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149 d_status = (*d_lcd_if_internal.d_cs_struct[d_lcd_if_internal.d_current_cs].d_tx.p_callback)();
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150
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151 /* disable the LCD Interface TX FIFO if needed */
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152 if( d_status == C_LCD_IF_CALLBACK_DISABLE_IT)
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153 {
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154 F_LCD_IF_DISABLE_TX_FIFO_EMPTY_IT;
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155
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156 /* set internal state to IDLE */
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157 d_lcd_if_internal.d_interrupt_state = C_LCD_IF_IDLE;
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158 } // End if
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159
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160 } // End if
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161
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162 } /* f_lcd_if_it_handler */
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163
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164 #endif