FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/sap/mac.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 : mac.pdf ;*** Creation : Wed Mar 11 09:58:17 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 : mac ;*** Document No. : 8441.111.03.009 ;*** Document Date : 2003-02-26 ;*** Document Status: BEING_PROCESSED ;*** Document Author: SAB ;******************************************************************************** PRAGMA SRC_FILE_TIME "Thu Nov 29 09:45:32 2007" PRAGMA LAST_MODIFIED "2003-02-26" PRAGMA ID_AND_VERSION "8441.111.03.009" CONST MAC_MAX_TIMESLOTS 8 ; defines the maximum number of uplink data blocks CONST MAC_BURST_PER_BLOCK 4 ; number of bursts that compose a block CONST MAC_MAX_DL_DATA_BLCKS 4 ; maximum number of dowlink data blocks VALTAB VAL_bcch_level VAL 0 MAC_RXLEV_MIN "minimum receive signal level as defined in GSM 05.08" VAL 63 MAC_RXLEV_MAX "maximum receive signal level as defined in GSM 05.08" VAL 0x80 MAC_RXLEV_NONE "no valid receive signal level present" VALTAB VAL_crc_error VAL 0 GRLC_CRC_PASS "radio block is correctly received" VAL 1 GRLC_CRC_FAIL "radio block is not correctly received" VAR nts "Maximum number of Timeslots for uplink TBF" B VAR fn "Framenumber" L VAR rlc_blocks_sent "number of transmitted rlc/mac blocks (except polling)" B VAR rx_no "Number of received Timeslots" S VAR block_status "Block Status" S VAR tn "Timeslot number" S VAR ul_block "Uplink block" S VAR dl_block "Downlink block" S VAR last_poll_resp "Last Poll Response" B VAR ta_value "Timing Advance Value" B VAR d_macc "Accumulated Metric" S VAR d_nerr "Number of estimated erorrs" S VAR burst_level "Signal level of the first valid downlink PDCH; ." B VAR radio_freq "Radio frequency of the TDMA frame; ." S VAR bcch_level "Signal level of BCCH serving Cell; ." B VAL @p_mac - VAL_bcch_level@ VAR crc_error "CRC error; ." B VAL @p_mac - VAL_crc_error@ VAR assignment_id "assignment identifier; ." L COMP ul_poll_resp "Uplink Poll Response" { block_status ; Block Status tn ; Timeslot number ul_block [13] ; Uplink block } COMP ul_data "Uplink Data" { block_status ; Block Status ul_block [28] ; Uplink block } COMP dl_data "Downlink Data" { block_status ; Block Status tn ; Timeslot number d_macc ; Accumulated Metric d_nerr ; Number of estimated erorrs dl_block [27] ; Downlink block } ; MAC_DATA_REQ 0x3200 ; MAC_DATA_IND 0x7200 ; MAC_READY_IND 0x7201 ; MAC_POLL_REQ 0x3201 ; MAC_PWR_CTRL_IND 0x7202 PRIM MAC_DATA_REQ 0x3200 { ul_data ; Uplink Data } PRIM MAC_DATA_IND 0x7200 { fn ; Framenumber rx_no ; Number of received Timeslots dl_data ; Downlink Data } PRIM MAC_READY_IND 0x7201 { nts ; Maximum number of Timeslots for uplink TBF fn ; Framenumber rlc_blocks_sent ; number of transmitted rlc/mac blocks (except polling) last_poll_resp ; Last Poll Response ta_value ; Timing Advance Value } PRIM MAC_POLL_REQ 0x3201 { ul_poll_resp ; Uplink Poll Response } PRIM MAC_PWR_CTRL_IND 0x7202 { assignment_id ; Assignment identifier crc_error ; CRC error bcch_level ; Signal level of BCCH serving Cell radio_freq [MAC_BURST_PER_BLOCK] ; Radio frequency of the TDMA frame burst_level [MAC_BURST_PER_BLOCK] ; Signal level of the first valid downlink PDCH }