FreeCalypso > hg > fc-tourmaline
view src/cs/layer1/gtt_include/ctm/tonemod.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> |
---|---|
date | Thu, 08 Jun 2023 08:23:37 +0000 |
parents | 4e78acac3d88 |
children |
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/* ******************************************************************************* * * COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH * 90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100 * * The program(s) may be used and/or copied only with the * written permission from Ericsson or in accordance * with the terms and conditions stipulated in the agreement or * contract under which the program(s) have been supplied. * * Changes since October 13, 2000: * - The type mod_state_t includes a new member txbits_fifo_state now. * ******************************************************************************* * * File : tonemod.h * Purpose : header file for tonemod.c * ******************************************************************************* */ #ifndef tonemod_h #define tonemod_h "$Id: $" /* ******************************************************************************* * INCLUDE FILES ******************************************************************************* */ #include <fifo.h> /* ******************************************************************************* * DECLARATION OF PROTOTYPES ******************************************************************************* */ /* Define a type for the state variable of the function tonemod() */ typedef struct { WORD16 cntModulatedSamples; WORD16 actualBits[2]; fifo_state_t txbits_fifo_state; } mod_state_t; /* ---------------------------------------------------------------------- */ /* Function init_tonemod() */ /* *********************** */ /* This function has to be executed before tonemod() can be used. */ /* ---------------------------------------------------------------------- */ void init_tonemod(mod_state_t *mod_state); /* ---------------------------------------------------------------------- */ /* Function tonemod() */ /* ****************** */ /* Modulator of the Cellular Text Telephone Modem. */ /* The input vector bits_in must contain the bits that have to be */ /* transmitted. The length of bits_in must be even because always two */ /* bits are coded in parallel. */ /* Bits are either unipolar (i.e. {0, 1}) or bipolar (i.e. {-1, +1)}. */ /* The length of the output vector tones_out must be 20 times longer than */ /* the length of bits_in, since each pair of two bits is coded within a */ /* frame of 40 audio samples. */ /* ---------------------------------------------------------------------- */ void tonemod(WORD16 *tones_out, WORD16 *bits_in, WORD16 num_samples_tones_out, WORD16 num_bits_in, mod_state_t *mod_state); #endif