FreeCalypso > hg > fc-tourmaline
view src/cs/riviera/rvt/rvt_keepalive.c @ 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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/* * This module is a FreeCalypso addition. Here we implement the special * operation mode that is only used when a device that was originally * meant to be a phone handset is turned into a pseudo-modem with no UI, * requiring connection to a host computer running rvinterf for control. */ #ifdef PSEUDO_MODEM_KEEPALIVE #include "nucleus.h" #include "abb.h" #include "rv/general.h" #include "rv/rv_general.h" #include "rvf/rvf_api.h" #include "rvt/rvt_gen.h" #include "rvt/rvt_def_i.h" #include "rvt/rvt_env.h" #include "rvt/rvt_env_i.h" #include "rvm/rvm_use_id_list.h" #include "uart/serialswitch.h" #include <string.h> volatile UINT8 rvt_keepalive_counter; void rvt_keepalive_input(T_RVT_BUFFER p_msg, UINT16 msg_length) { /* Checking for an invalid PDU. */ if ((p_msg == NULL) || (msg_length != 1)) return; /* Check for the correct opcode */ if (*p_msg != 'A') return; /* good keepalive response from external host */ rvt_keepalive_counter = 0; } void rvt_keepalive_register(void) { T_RVT_USER_ID rvt_id; rvt_register_id("KEEPALIVE", &rvt_id, rvt_keepalive_input); } static void keepalive_send(UINT8 *buf, UINT32 size) { UINT32 sent; for (sent = 0; sent < size; ) sent += SER_tr_WriteNBytes(SER_LAYER_1, buf + sent, size - sent); } #ifdef PSEUDO_MODEM_USB static char poweroff_msg[] = "System: USB unplugged, powering off"; #else static char poweroff_msg[] = "System: no keepalive response, powering off"; static UINT8 keepalive_msg[2] = {RVT_KEEPALIVE_HEADER, 'Q'}; #endif static void keepalive_poweroff(void) { UINT8 poweroff_msg_buf[50], *p; p = poweroff_msg_buf; *p++ = RVT_RV_HEADER; *p++ = 0; *p++ = 0; *p++ = 0; *p++ = 0; *p++ = RV_TRACE_LEVEL_ERROR; strcpy((char *)p, poweroff_msg); keepalive_send(poweroff_msg_buf, strlen(poweroff_msg) + 6); /* do it */ ABB_Power_Off(); } void rvt_keepalive_process(void) { SYS_UWORD16 abb_status; abb_status = ABB_Read_Status(); if (abb_status & CHGPRES) { rvt_keepalive_counter = 0; return; } #ifdef PSEUDO_MODEM_USB keepalive_poweroff(); #else if (rvt_keepalive_counter >= 3) keepalive_poweroff(); else { rvt_keepalive_counter++; keepalive_send(keepalive_msg, sizeof keepalive_msg); } #endif } #endif