FreeCalypso > hg > fc-tourmaline
view src/nucleus/iod.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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/*************************************************************************/ /* */ /* Copyright Mentor Graphics Corporation 2002 */ /* All Rights Reserved. */ /* */ /* THIS WORK CONTAINS TRADE SECRET AND PROPRIETARY INFORMATION WHICH IS */ /* THE PROPERTY OF MENTOR GRAPHICS CORPORATION OR ITS LICENSORS AND IS */ /* SUBJECT TO LICENSE TERMS. */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* FILE NAME VERSION */ /* */ /* iod.c Nucleus PLUS 1.14 */ /* */ /* COMPONENT */ /* */ /* IO - Input/Output Driver Management */ /* */ /* DESCRIPTION */ /* */ /* This file contains global data structures for use within the */ /* Input/Output Driver Management component. */ /* */ /* DATA STRUCTURES */ /* */ /* IOD_Created_Drivers_List Pointer to the linked-list */ /* of created I/O drivers */ /* IOD_Total_Drivers Total number of created */ /* I/O drivers */ /* IOD_List_Protect I/O driver list protection */ /* */ /* FUNCTIONS */ /* */ /* None */ /* */ /* DEPENDENCIES */ /* */ /* io_defs.h I/O Driver Management consts */ /* tc_defs.h Thread Control constants */ /* */ /* HISTORY */ /* */ /* DATE REMARKS */ /* */ /* 03-01-1993 Created initial version 1.0 */ /* 04-19-1993 Verified version 1.0 */ /* 03-01-1994 Updated copyright notice, */ /* resulting in version 1.1 */ /* */ /* 03-18-1994 Verified version 1.1 */ /* 04-17-1996 updated to version 1.2 */ /* 03-24-1998 Released version 1.3 */ /* 03-26-1999 Released 1.11m (new release */ /* numbering scheme) */ /* 04-17-2002 Released version 1.13m */ /* 11-07-2002 Released version 1.14 */ /*************************************************************************/ #define NU_SOURCE_FILE #include "io_defs.h" /* I/O Driver constants */ #include "tc_defs.h" /* Thread control constants */ /* IOD_Created_Drivers_List is the head pointer of the linked list of created I/O drivers. If the list is NU_NULL, there are no I/O drivers created. */ CS_NODE *IOD_Created_Drivers_List; /* IOD_Total_Drivers contains the number of currently created I/O drivers. */ UNSIGNED IOD_Total_Drivers; /* IOD_List_Protect is a list protection structure used to block any other thread from access to the created drivers list. */ TC_PROTECT IOD_List_Protect;