FreeCalypso > hg > fc-tourmaline

annotate src/cs/layer1/gtt_include/ctm/viterbi.h @ 303:f76436d19a7a default tip

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!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>
date Thu, 08 Jun 2023 08:23:37 +0000
parents 4e78acac3d88
children
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4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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1 /*
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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2 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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3 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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4 * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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5 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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6 * The program(s) may be used and/or copied only with the
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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7 * written permission from Ericsson or in accordance
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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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.
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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10 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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11 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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12 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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13 * File : viterbi.h
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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14 * Purpose : Header file for viterbi.c
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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15 * Author : Francisco Javier Gil Gomez
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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16 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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17 * Revision history
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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18 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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19 * $Log: $
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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20 *
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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21 *******************************************************************************
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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22 */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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23
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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24 #ifndef viterbi_h
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25 #define viterbi_h "$Id: $"
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26
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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27 #include <stdio.h>
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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28 #include <math.h>
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29
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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30 #include "conv_poly.h" /* definition of viterbi_t */
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31
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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32
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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33 /***********************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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34 /* viterbi_init() */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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35 /* ************** */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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36 /* Initialization of the Viterbi decoder. */
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37 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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38 /* output variables: */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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39 /* *viterbi_state initialized state variable of the decoder */
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40 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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41 /***********************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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42
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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43 void viterbi_init(viterbi_t* viterbi_state);
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44
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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45
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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46 /***********************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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47 /* viterbi_reinit() */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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48 /* **************** */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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49 /* Re-Initialization of the Viterbi decoder. This function should be */
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50 /* used for re-setting a Viterbi decoder that has already been */
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51 /* initialized. In contrast to viterbi_init(), this reinit function */
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52 /* does not calculate the values of all members of viterbi_state that */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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53 /* do not change during the execution of the Viterbi algorithm. */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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54 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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55 /* output variables: */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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56 /* *viterbi_state initialized state variable of the decoder */
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57 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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58 /***********************************************************************/
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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59
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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60 void viterbi_reinit(viterbi_t* viterbi_state);
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61
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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62
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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63 /***********************************************************************/
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64 /* viterbi_exec() */
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65 /* ************** */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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66 /* Execution of the Viterbi decoder */
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67 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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68 /* input variables: */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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69 /* inputword Vector with gross bits */
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70 /* length_input Number of valid gross bits in vector inputword.*/
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71 /* length_input must be an integer multiple of */
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72 /* CHC_RATE */
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73 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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74 /* output variables: */
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75 /* out Vector with the decoded net bits. The net bits */
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76 /* are either 0 or 1. */
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77 /* *num_valid_out_bits Number of valid bits in vector out */
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78 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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79 /* input/output variables: */
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80 /* *viterbi_state State variable of the decoder */
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81 /* */
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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82 /***********************************************************************/
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83
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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84 void viterbi_exec(WORD16* inputword, WORD16 length_input,
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85 WORD16* out, WORD16* num_valid_out_bits,
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86 viterbi_t* viterbi_state);
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87
4e78acac3d88 src/{condat,cs,gpf,nucleus}: import from Selenite
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88 #endif