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annotate gsm-fw/g23m-gsm/dl/dl_sacch0.c @ 1017:759b3cbf46aa

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doc/TCH-special-feature: document written
author Mychaela Falconia <falcon@ivan.Harhan.ORG>
date Mon, 21 Mar 2016 06:05:57 +0000
parents bf58458efda0
children
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1 /*
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2 +-----------------------------------------------------------------------------
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3 | Project : GSM-PS
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4 | Modul : DL_SACCH0
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5 +-----------------------------------------------------------------------------
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6 | Copyright 2002 Texas Instruments Berlin, AG
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7 | All rights reserved.
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8 |
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9 | This file is confidential and a trade secret of Texas
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10 | Instruments Berlin, AG
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11 | The receipt of or possession of this file does not convey
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12 | any rights to reproduce or disclose its contents or to
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13 | manufacture, use, or sell anything it may describe, in
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14 | whole, or in part, without the specific written consent of
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15 | Texas Instruments Berlin, AG.
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16 +-----------------------------------------------------------------------------
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17 | Purpose : This Modul defines the functions for the slow associated
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18 | control channel SACCH (only SAPI=0) of the component DL
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19 +-----------------------------------------------------------------------------
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20 */
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21
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22 #ifndef DL_SACCH0_C
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23 #define DL_SACCH0_C
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24
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25 #include "config.h"
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26 #include "fixedconf.h"
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27 #include "condat-features.h"
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29 #define ENTITY_DL
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31 /*==== INCLUDES ===================================================*/
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32
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33 #include "typedefs.h"
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34 #include <string.h>
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35 #include "pconst.cdg"
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36 #include "vsi.h"
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37 #include "custom.h"
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38 #include "gsm.h"
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39 #include "mon_dl.h"
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40 #include "prim.h"
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41 #include "pei.h"
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42 #include "tok.h"
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43 #include "ccdapi.h"
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44 #include "dl.h"
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45 #include "dl_trc.h"
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47 /*==== EXPORT =====================================================*/
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48
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49 /*==== PRIVAT =====================================================*/
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50
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51 /*==== VARIABLES ==================================================*/
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52 GLOBAL const T_FRAME meas_report_no_nc =
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53 {
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54 N201_SACCH*8,
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55 24,
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56 {
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57 0x00, 0x00, 0x00,
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58 0x06, 0x15, 0x1E, 0x1E, 0x7E,
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59 0x00, 0x00, 0x00, 0x00, 0x00,
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60 0x00, 0x00, 0x00, 0x00, 0x00,
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61 0x00, 0x00, 0x00, 0x00, 0x00
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62 }
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63 };
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64 LOCAL const T_FRAME meas_report_invalid =
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65 {
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66 N201_SACCH*8,
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67 24,
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68 {
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69 0x00, 0x00, 0x00,
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70 0x06, 0x15, 0x00, 0x40, 0x00,
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71 0x00, 0x00, 0x00, 0x00, 0x00,
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72 0x00, 0x00, 0x00, 0x00, 0x00,
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73 0x00, 0x00, 0x00, 0x00, 0x00
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74 }
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75 };
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76
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77
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78 /*==== FUNCTIONS ==================================================*/
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79 /*
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80 +--------------------------------------------------------------------+
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81 | PROJECT : GSM-PS (6147) MODULE : DL_SACCH0 |
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82 | STATE : code ROUTINE : sacch_init_dl_data |
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83 +--------------------------------------------------------------------+
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84
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85 PURPOSE : Initialisation of SACCH data for an instance.
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86
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87 */
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88
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89 GLOBAL void sacch0_init_dl_data (void)
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90 {
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91 GET_INSTANCE_DATA;
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92 T_CCH *pcch = &dl_data->cch[C_SACCH0];
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93 TRACE_FUNCTION ("sacch_init_dl_data()");
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94
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95 memset (pcch, 0, sizeof (T_CCH));
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96 pcch->ch_type = L2_CHANNEL_SACCH;
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97
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98 if (dl_data->dcch3_in_msg)
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99 {
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100 COM_FREE_POINTER (dl_data->dcch3_in_msg);
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101 dl_data->dcch3_in_msg = NULL;
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102 }
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103
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104 sacch0_reset_meas ();
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105 }
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106
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107 /*
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108 +--------------------------------------------------------------------+
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109 | PROJECT : GSM-PS (6147) MODULE : DL_SACCH0 |
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110 | STATE : code ROUTINE : sacch0_reset_meas |
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111 +--------------------------------------------------------------------+
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112
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113 PURPOSE : Reset measurement reports and sacch_mode.
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114
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115 */
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116
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117 GLOBAL void sacch0_reset_meas (void)
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118 {
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119 GET_INSTANCE_DATA;
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120 dl_data->sacch_act_buffer = meas_report_no_nc;
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121 dl_data->sacch_last_buffer= meas_report_no_nc;
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122 dl_data->sacch_mode = 2;
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123 }
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124
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125 /*
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126 +--------------------------------------------------------------------+
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127 | PROJECT : GSM-PS (6147) MODULE : DL_SACCH0 |
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128 | STATE : code ROUTINE : sacch_send_data |
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129 +--------------------------------------------------------------------+
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130
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131 PURPOSE : Send unacknowledged data on SACCH, SAPI=0.
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132
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133 */
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134
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135 GLOBAL void sacch0_send_data (void)
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136 {
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137 GET_INSTANCE_DATA;
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138 TRACE_FUNCTION ("sacch_send_data()");
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139
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140 TRACE_EVENT_WIN_P2 ("SACCH0 MODE = %d, %s", dl_data->sacch_mode,
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141 (dl_data->rr_short_pd_buffer.l_buf AND
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142 dl_data->rr_short_pd_ch_type EQ L2_CHANNEL_SACCH) ? "RR short PD" : "normal");
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143
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144 if (dl_data->rr_short_pd_buffer.l_buf AND
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145 dl_data->rr_short_pd_ch_type EQ L2_CHANNEL_SACCH)
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146 { /* RR message with short PD, short L2 header type 1, format Bter */
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147 com_build_UI_Bter (L2_CHANNEL_SACCH);
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148 }
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149 else
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150 { /* format A or B */
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151 if (dl_data->sacch_mode EQ 2)
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152 {
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153 com_build_UI_command (L2_CHANNEL_SACCH, PS_SAPI_0, &meas_report_invalid);
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154 }
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155 else
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156 {
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157 if (dl_data->dl_active EQ FALSE)
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parents:
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158 dl_data->sacch_last_buffer = dl_data->sacch_act_buffer;
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159
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160 com_build_UI_command (L2_CHANNEL_SACCH, PS_SAPI_0, &dl_data->sacch_last_buffer);
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161 }
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162 if (dl_data->sacch_mode)
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parents:
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163 dl_data->sacch_mode--;
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parents:
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164 }
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165 }
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166
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167 #endif