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annotate gsm-fw/bsp/timer1.c @ 250:3d88461d8284

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beginning of TIFFS IVA documentation
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Fri, 31 Jan 2014 07:37:39 +0000
parents afceeeb2cba1
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7 unpublished work.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 "../include/sys_types.h"
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33
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34 #include "mem.h"
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35 #include "timer1.h"
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36
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37 /*--------------------------------------------------------------*/
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38 /* Dtimer1_Get_cntlreg() */
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39 /*--------------------------------------------------------------*/
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40 /* Parameters : none */
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41 /* Return : none */
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42 /* Functionality : read one of the TIMER register */
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43 /*--------------------------------------------------------------*/
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44
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45 SYS_UWORD16 Dtimer1_Get_cntlreg(void)
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46 {
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47 SYS_UWORD16 timerReg;
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48
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49 timerReg = (( * (volatile SYS_UWORD16 *) D_TIMER_CNTL) & D_TIMER_CNTL_MASK);
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50 return(timerReg);
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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 /* Dtimer_Init_cntl() */
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56 /*--------------------------------------------------------------*/
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57 /* Parameters :start/stop,reload yes/no,pre scale,ext clk on/off*/
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58 /* Return : none */
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59 /* Functionality : initialize the timer start, autoreload, Ptv */
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60 /* and clock enable */
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61 /*--------------------------------------------------------------*/
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62
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63 void Dtimer1_Init_cntl (SYS_UWORD16 St, SYS_UWORD16 Reload, SYS_UWORD16 clockScale, SYS_UWORD16 clkon)
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64 {
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65 SYS_UWORD16 cntl = * (volatile SYS_UWORD16 *) D_TIMER_CNTL;
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66
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67
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68 cntl &= ~(D_TIMER_ST | D_TIMER_PTV); /* stop and reset values */
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69
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70 (Reload) ? (cntl |= D_TIMER_AR) : (cntl &= ~D_TIMER_AR);
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71
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72 cntl |= (clockScale << 2 );
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73
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74 cntl |= ( clkon << 5 );
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75
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76
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77 * (volatile SYS_UWORD16 *) D_TIMER_LOAD = St;
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78
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79 * (volatile SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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80 }
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81
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82 /*--------------------------------------------------------------*/
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83 /* Dtimer1_AR() */
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84 /*--------------------------------------------------------------*/
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85 /* Parameters :start/stop,reload yes/no,pre scale,ext clk on/off*/
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86 /* Return : none */
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87 /* Functionality : set the AR bit Ar = 0 | 1 */
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88 /*--------------------------------------------------------------*/
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89
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90 void Dtimer1_AR(SYS_UWORD16 Ar)
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91 {
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92 SYS_UWORD16 cntl = * (volatile SYS_UWORD16 *) D_TIMER_CNTL;
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93
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94 cntl &= ~(D_TIMER_ST); /* stop the timer */
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95
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96 cntl &= ~(D_TIMER_AR);
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97
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98 cntl |= ( Ar << 1 );
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99
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100 * (volatile SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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101 }
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102
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103 /*--------------------------------------------------------------*/
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104 /* Dtimer1_PTV() */
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105 /*--------------------------------------------------------------*/
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106 /* Parameters : pre scale */
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107 /* Return : none */
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108 /* Functionality : set the Ptv bits Ptv = 0 => 7 */
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109 /*--------------------------------------------------------------*/
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110
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111 void Dtimer1_PTV(SYS_UWORD16 Ptv)
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112 {
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113 SYS_UWORD16 cntl = * (volatile SYS_UWORD16 *) D_TIMER_CNTL;
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114
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115 cntl &= ~(D_TIMER_ST); /* stop the timer */
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116
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117 cntl &= ~(D_TIMER_PTV); /* Ptv[4:0] set to 0 */
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118
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119 cntl |= ( Ptv << 2 );
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120
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121 * (volatile SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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122 }
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123
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124 /*--------------------------------------------------------------*/
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125 /* Dtimer1_Clken() */
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126 /*--------------------------------------------------------------*/
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127 /* Parameters : ext clk on/off */
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128 /* Return : none */
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129 /* Functionality : set the clock_enable bit En = 0 | 1 */
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130 /*--------------------------------------------------------------*/
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131
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132 void Dtimer1_Clken(SYS_UWORD16 En)
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133 {
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134 SYS_UWORD16 cntl = * (volatile SYS_UWORD16 *) D_TIMER_CNTL;
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135
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136 cntl &= ( ~D_TIMER_CLK_EN);
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137
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138 cntl |= ( En << 5 );
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139
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140 * (volatile SYS_UWORD16 *) D_TIMER_CNTL = cntl;
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141 }
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142
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143
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144
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145 /*--------------------------------------------------------------*/
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146 /* Dtimer_Start() */
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147 /*--------------------------------------------------------------*/
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148 /* Parameters : on/off */
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149 /* Return : none */
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150 /* Functionality : Start or stop the timer */
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151 /*--------------------------------------------------------------*/
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152
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153 void Dtimer1_Start (SYS_UWORD16 startStop)
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154 {
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155 (startStop == D_TIMER_ST) ?
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156 ((* (SYS_UWORD16 *) D_TIMER_CNTL) |= D_TIMER_ST) : /* condition vrai */
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157 ((* (SYS_UWORD16 *) D_TIMER_CNTL) &= ~D_TIMER_ST); /* condition fausse */
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158 }
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159
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160 /*--------------------------------------------------------------*/
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161 /* Dtimer_ReadValue() */
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162 /*--------------------------------------------------------------*/
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163 /* Parameters : on/off */
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164 /* Return : none */
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165 /* Functionality : Read timer value */
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166 /*--------------------------------------------------------------*/
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167 SYS_UWORD16 Dtimer1_ReadValue (void)
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168 {
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169 return(* (SYS_UWORD16 *) D_TIMER_READ);
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170 }
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171
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172 /*--------------------------------------------------------------*/
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173 /* Parameters : on/off */
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174 /* Return : none */
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175 /* Functionality : Write timer value */
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176 /*--------------------------------------------------------------*/
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177 void Dtimer1_WriteValue (SYS_UWORD16 value)
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178 {
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179 (* (SYS_UWORD16 *) D_TIMER_LOAD) = value;
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180 }