FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/sap/mmss.pdf @ 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 | 35f7a1dc9f7d |
children |
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;******************************************************************************** ;*** File : mmss.pdf ;*** Creation : Wed Mar 11 09:58:23 CST 2009 ;*** XSLT Processor : Apache Software Foundation / http://xml.apache.org/xalan-j / supports XSLT-Ver: 1 ;*** Copyright : (c) Texas Instruments AG, Berlin Germany 2002 ;******************************************************************************** ;*** Document Type : Service Access Point Specification ;*** Document Name : mmss ;*** Document No. : 6147.105.97.102 ;*** Document Date : 2002-07-19 ;*** Document Status: BEING_PROCESSED ;*** Document Author: HM ;******************************************************************************** PRAGMA SRC_FILE_TIME "Thu Nov 29 09:47:24 2007" PRAGMA LAST_MODIFIED "2002-07-19" PRAGMA ID_AND_VERSION "6147.105.97.102" CONST MAX_SDU_LEN 1 ; maximum service data unit length VALTAB VAL_ti VAL 0 - 6 "ms originated transaction" VAL 8 - 14 "ms originated transaction" VAL 7 TI_RES_MO "reserved" VAL 15 TI_RES_MT "reserved" VAR cause "MM cause" S VAR l_buf "length in bits" S VAR o_buf "offset in bits" S VAR buf "bit buffer" B VAR ti "transaction identifier" B VAL @p_mmss - VAL_ti@ VAR d1 "dummy, not used" B VAR d2 "dummy, not used" B COMP sdu "Service Data Unit" { l_buf ; length in bits o_buf ; offset in bits buf [MAX_SDU_LEN] ; bit buffer } ; MMSS_ESTABLISH_REQ 0x80000008 ; MMSS_RELEASE_REQ 0x80010008 ; MMSS_DATA_REQ 0x80020008 ; MMSS_DATA_IND 0x80004008 ; MMSS_ERROR_IND 0x80014008 ; MMSS_ESTABLISH_CNF 0x80024008 ; MMSS_ESTABLISH_IND 0x80034008 ; MMSS_RELEASE_IND 0x80044008 PRIM MMSS_ESTABLISH_REQ 0x80000008 { ti ; transaction identifier } PRIM MMSS_RELEASE_REQ 0x80010008 { ti ; transaction identifier } PRIM MMSS_DATA_REQ 0x80020008 { d1 ; dummy d2 ; dummy sdu ; service data unit } PRIM MMSS_DATA_IND 0x80004008 { d1 ; dummy d2 ; dummy sdu ; service data unit } PRIM MMSS_ERROR_IND 0x80014008 { ti ; transaction identifier cause ; error cause } PRIM MMSS_ESTABLISH_CNF 0x80024008 { ti ; transaction identifier } PRIM MMSS_ESTABLISH_IND 0x80034008 { d1 ; dummy d2 ; dummy sdu ; service data unit } PRIM MMSS_RELEASE_IND 0x80044008 { ti ; transaction identifier cause ; release cause }