FreeCalypso > hg > fc-tourmaline
annotate src/cs/layer1/gtt_include/ctm/conv_poly.h @ 303:f76436d19a7a default tip
!GPRS config: fix long-standing AT+COPS chance hanging bug
There has been a long-standing bug in FreeCalypso going back years:
sometimes in the AT command bring-up sequence of an ACI-only MS,
the AT+COPS command would produce only a power scan followed by
cessation of protocol stack activity (only L1 ADC traces), instead
of the expected network search sequence. This behaviour was seen
in different FC firmware versions going back to Citrine, and seemed
to follow some law of chance, not reliably repeatable.
This bug has been tracked down and found to be specific to !GPRS
configuration, stemming from our TCS2/TCS3 hybrid and reconstruction
of !GPRS support that was bitrotten in TCS3.2/LoCosto version.
ACI module psa_mms.c, needed only for !GPRS, was missing in the TCS3
version and had to be pulled from TCS2 - but as it turns out,
there is a new field in the MMR_REG_REQ primitive that needs to be
set correctly, and that psa_mms.c module is the place where this
initialization needed to be added.
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Thu, 08 Jun 2023 08:23:37 +0000 |
parents | 4e78acac3d88 |
children |
rev | line source |
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0
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src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /* |
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2 ******************************************************************************* |
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3 * |
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4 * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH |
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5 * |
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6 * The program(s) may be used and/or copied only with the |
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7 * written permission from Ericsson or in accordance |
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8 * with the terms and conditions stipulated in the agreement or |
4e78acac3d88
src/{condat,cs,gpf,nucleus}: import from Selenite
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9 * contract under which the program(s) have been supplied. |
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10 * |
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11 ******************************************************************************* |
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12 * |
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13 * File : conv_poly.h |
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14 * Purpose : Header file for conv_poly.c |
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15 * Author : Francisco Javier Gil Gomez |
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16 * |
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17 ******************************************************************************* |
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18 */ |
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19 |
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20 #ifndef conv_poly_h |
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21 #define conv_poly_h |
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22 |
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23 #include "ctm_defines.h" /* CHC_RATE, CHC_K */ |
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24 |
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25 /* The constants CHC_RATE (rate of the channel codec) and */ |
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26 /* CHC_K (constraint length) are defined in ctm_defines */ |
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27 |
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28 #define NUM_NODES (1<<(CHC_K-1)) /* MUST BE 2^(CHC_K-1) */ |
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29 #define BLOCK 5 /* We perform the analysis of the */ |
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30 // /* paths along BLOCK*CHC_K steps */ |
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31 |
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32 |
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33 /* POLYXYZ = Polynomial for generating an optimum short constraint */ |
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34 /* length convolutional code with rate = 1/X and constraint length = Y */ |
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35 |
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36 /* Polynoms for rate = 1/2 */ |
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37 |
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38 #define POLY23A 0x7 |
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39 #define POLY23B 0x5 |
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40 |
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41 #define POLY24A 0XF |
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42 #define POLY24B 0XB |
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43 |
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44 #define POLY25A 0X17 |
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45 #define POLY25B 0X19 |
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46 |
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47 #define POLY26A 0X2F |
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48 #define POLY26B 0X35 |
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49 |
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50 #define POLY27A 0X4F |
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51 #define POLY27B 0X6D |
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52 |
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53 #define POLY28A 0X9F |
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54 #define POLY28B 0XE5 |
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55 |
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56 #define POLY29A 0X1AF |
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57 #define POLY29B 0X11D |
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58 |
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59 /* Polynoms for rate = 1/3 */ |
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60 |
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61 #define POLY33A 0x7 |
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62 #define POLY33B 0x7 |
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63 #define POLY33C 0x5 |
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64 |
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65 #define POLY34A 0xF |
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66 #define POLY34B 0xB |
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67 #define POLY34C 0xD |
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68 |
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69 #define POLY35A 0x1F |
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70 #define POLY35B 0x1B |
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71 #define POLY35C 0x15 |
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72 |
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73 #define POLY36A 0x2F |
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74 #define POLY36B 0x2B |
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75 #define POLY36C 0x3D |
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76 |
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77 #define POLY37A 0x4F |
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78 #define POLY37B 0x57 |
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79 #define POLY37C 0x6D |
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80 |
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81 #define POLY38A 0xEF |
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82 #define POLY38B 0x9B |
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83 #define POLY38C 0xA9 |
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84 |
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85 /* Polynoms for rate = 1/4 */ |
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86 /* cf. Lin and Costello, |
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87 "Error Control Coding: Fundamentals and Applications" */ |
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88 |
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89 #define POLY43A 0x5 |
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90 #define POLY43B 0x7 |
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91 #define POLY43C 0x7 |
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92 #define POLY43D 0x7 |
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93 |
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94 #define POLY44A 0xB |
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95 #define POLY44B 0xD |
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96 #define POLY44C 0xD |
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97 #define POLY44D 0xF |
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98 |
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99 #define POLY45A 0x15 |
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100 #define POLY45B 0x17 |
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101 #define POLY45C 0x1B |
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102 #define POLY45D 0x1F |
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103 |
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104 #define POLY46A 0x2B |
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105 #define POLY46B 0x37 |
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106 #define POLY46C 0x39 |
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107 #define POLY46D 0x3D |
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108 |
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109 #define POLY47A 0x5D |
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110 #define POLY47B 0x5D |
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111 #define POLY47C 0x67 |
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112 #define POLY47D 0x73 |
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113 |
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114 #define POLY48A 0x9D |
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115 #define POLY48B 0xBD |
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116 #define POLY48C 0xCB |
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117 #define POLY48D 0xEF |
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118 |
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119 #define POLY49A 0x133 |
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120 #define POLY49B 0x15D |
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121 #define POLY49C 0x1DB |
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122 #define POLY49D 0x1E5 |
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123 |
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124 typedef struct |
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125 { |
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126 WORD16 impulse_response[CHC_RATE*CHC_K]; |
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127 WORD16 temp[CHC_RATE*CHC_K]; |
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128 } conv_encoder_t; |
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129 |
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130 typedef struct |
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131 { |
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132 WORD32 metric; /* Metric of the node after updating */ |
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133 WORD32 oldmetric; /* Metric of the node before updating */ |
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134 WORD16 base_output; /* Output of the node when the input is 0 */ |
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135 WORD16 continue_path_from; /* Last node from which the actual node |
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136 will continue the path */ |
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137 WORD16 new_entry; /* Value to be added to the path (0 or 1) */ |
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138 WORD16 path[BLOCK*CHC_K]; /* Path ending in the node */ |
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139 WORD16 temppath[BLOCK*CHC_K]; /* Temp path used for the updating */ |
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140 |
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141 } node_t; |
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142 |
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143 typedef struct |
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144 { |
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145 node_t nodes[NUM_NODES]; |
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146 WORD16 number_of_steps; |
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147 } viterbi_t; |
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148 |
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149 void polynomials(WORD16 rate, WORD16 k, |
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150 WORD16* polya, WORD16* polyb, |
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151 WORD16* polyc, WORD16* polyd); |
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152 |
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153 #endif |