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annotate src/cs/drivers/drv_core/timer/timer1.c @ 11:b493d3857f4e

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helpers: initial import from Magnetite (pruned)
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 15 Jul 2018 21:24:44 +0000
parents b6a5e36de839
children
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1 /******************************************************************************
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2 TEXAS INSTRUMENTS INCORPORATED PROPRIETARY INFORMATION
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3
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4 Property of Texas Instruments -- For Unrestricted Internal Use Only
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5 Unauthorized reproduction and/or distribution is strictly prohibited. This
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6 product is protected under copyright law and trade secret law as an
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7 unpublished work. Created 1987, (C) Copyright 1997 Texas Instruments. All
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8 rights reserved.
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9
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10
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11 Filename : timer1.c
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12
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13 Description : Set of useful functions for TIMER module test cases
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14
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15 Project : drivers
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16
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17 Author : pmonteil@tif.ti.com Patrice Monteil.
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18
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19 Version number : 1.4
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20
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21 Date and time : 08/18/00 14:42:35
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22
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23 Previous delta : 06/30/00 11:40:43
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24
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25 SCCS file : /db/gsm_asp/db_ht96/dsp_0/gsw/rel_0/mcu_l1/release_gprs/RELEASE_GPRS/drivers1/common/SCCS/s.timer1.c
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26
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27 Sccs Id (SID) : '@(#) timer1.c 1.4 08/18/00 14:42:35 '
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29
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30 *****************************************************************************/
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31
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32 #include "l1sw.cfg"
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33
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34 #if (OP_L1_STANDALONE == 0)
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35 #include "main/sys_types.h"
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36 #else
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37 #include "sys_types.h"
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38 #endif
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39 #include "memif/mem.h"
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40 #include "timer1.h"
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41
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42 /*--------------------------------------------------------------*/
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43 /* Dtimer1_Get_cntlreg() */
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44 /*--------------------------------------------------------------*/
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45 /* Parameters : none */
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46 /* Return : none */
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47 /* Functionality : read one of the TIMER register */
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48 /*--------------------------------------------------------------*/
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49
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50 SYS_UWORD16 Dtimer1_Get_cntlreg(void)
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51 {
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52 volatile SYS_UWORD16 timerReg;
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53
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54 timerReg = (( * (SYS_UWORD16 *) D_TIMER_CNTL) & D_TIMER_CNTL_MASK);
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55 return(timerReg);
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56 }
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57
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58
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59 /*--------------------------------------------------------------*/
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60 /* Dtimer_Init_cntl() */
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61 /*--------------------------------------------------------------*/
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62 /* Parameters :start/stop,reload yes/no,pre scale,ext clk on/off*/
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63 /* Return : none */
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64 /* Functionality : initialize the timer start, autoreload, Ptv */
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65 /* and clock enable */
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66 /*--------------------------------------------------------------*/
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67
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68 void Dtimer1_Init_cntl (SYS_UWORD16 St, SYS_UWORD16 Reload, SYS_UWORD16 clockScale, SYS_UWORD16 clkon)
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69 {
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70 SYS_UWORD16 cntl = * (SYS_UWORD16 *) D_TIMER_CNTL;
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71
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72
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73 cntl &= ~(D_TIMER_ST | D_TIMER_PTV); /* stop and reset values */
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74
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75 (Reload) ? (cntl |= D_TIMER_AR) : (cntl &= ~D_TIMER_AR);
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76
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77 cntl |= (clockScale << 2 );
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78
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79 cntl |= ( clkon << 5 );
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80
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81
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82 * (SYS_UWORD16 *) D_TIMER_LOAD = St;
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83
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84 * (SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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85 }
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86
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87 /*--------------------------------------------------------------*/
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88 /* Dtimer1_AR() */
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89 /*--------------------------------------------------------------*/
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90 /* Parameters :start/stop,reload yes/no,pre scale,ext clk on/off*/
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91 /* Return : none */
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92 /* Functionality : set the AR bit Ar = 0 | 1 */
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93 /*--------------------------------------------------------------*/
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94
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95 void Dtimer1_AR(SYS_UWORD16 Ar)
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96 {
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97 SYS_UWORD16 cntl = * (SYS_UWORD16 *) D_TIMER_CNTL;
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98
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99 cntl &= ~(D_TIMER_ST); /* stop the timer */
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100
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101 cntl &= ~(D_TIMER_AR);
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102
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103 cntl |= ( Ar << 1 );
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104
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105 * (SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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106 }
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107
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108 /*--------------------------------------------------------------*/
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109 /* Dtimer1_PTV() */
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110 /*--------------------------------------------------------------*/
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111 /* Parameters : pre scale */
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112 /* Return : none */
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113 /* Functionality : set the Ptv bits Ptv = 0 => 7 */
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114 /*--------------------------------------------------------------*/
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115
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116 void Dtimer1_PTV(SYS_UWORD16 Ptv)
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117 {
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118 SYS_UWORD16 cntl = * (SYS_UWORD16 *) D_TIMER_CNTL;
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119
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120 cntl &= ~(D_TIMER_ST); /* stop the timer */
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121
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122 cntl &= ~(D_TIMER_PTV); /* Ptv[4:0] set to 0 */
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123
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124 cntl |= ( Ptv << 2 );
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125
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126 * (SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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127 }
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128
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129 /*--------------------------------------------------------------*/
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130 /* Dtimer1_Clken() */
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131 /*--------------------------------------------------------------*/
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132 /* Parameters : ext clk on/off */
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133 /* Return : none */
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134 /* Functionality : set the clock_enable bit En = 0 | 1 */
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135 /*--------------------------------------------------------------*/
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136
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137 void Dtimer1_Clken(SYS_UWORD16 En)
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138 {
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139 SYS_UWORD16 cntl = * (SYS_UWORD16 *) D_TIMER_CNTL;
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140
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141 cntl &= ( ~D_TIMER_CLK_EN);
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142
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143 cntl |= ( En << 5 );
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144
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145 * (SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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146 }
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147
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148
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149
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150 /*--------------------------------------------------------------*/
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151 /* Dtimer_Start() */
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152 /*--------------------------------------------------------------*/
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153 /* Parameters : on/off */
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154 /* Return : none */
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155 /* Functionality : Start or stop the timer */
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156 /*--------------------------------------------------------------*/
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157
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158 void Dtimer1_Start (SYS_UWORD16 startStop)
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159 {
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160 (startStop == D_TIMER_ST) ?
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161 ((* (SYS_UWORD16 *) D_TIMER_CNTL) |= D_TIMER_ST) : /* condition vrai */
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162 ((* (SYS_UWORD16 *) D_TIMER_CNTL) &= ~D_TIMER_ST); /* condition fausse */
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163 }
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164
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165 /*--------------------------------------------------------------*/
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166 /* Dtimer_ReadValue() */
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167 /*--------------------------------------------------------------*/
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168 /* Parameters : on/off */
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169 /* Return : none */
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170 /* Functionality : Read timer value */
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171 /*--------------------------------------------------------------*/
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172 SYS_UWORD16 Dtimer1_ReadValue (void)
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173 {
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174 return(* (SYS_UWORD16 *) D_TIMER_READ);
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175
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176 }
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177
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178 /*--------------------------------------------------------------*/
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179 /* Parameters : on/off */
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180 /* Return : none */
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181 /* Functionality : Write timer value */
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182 /*--------------------------------------------------------------*/
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183 void Dtimer1_WriteValue (SYS_UWORD16 value)
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184 {
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185 (* (SYS_UWORD16 *) D_TIMER_LOAD) = value;
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186
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187 }