FreeCalypso > hg > fc-tourmaline
view cdg-hybrid/sap/dti.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 : dti.pdf ;*** Creation : Wed Mar 11 09:57:58 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 : dti ;*** Document No. : 8411.110.00.007 ;*** Document Date : 2000-06-29 ;*** Document Status: BEING_PROCESSED ;*** Document Author: MG ;******************************************************************************** PRAGMA SRC_FILE_TIME "Thu Nov 29 09:40:22 2007" PRAGMA LAST_MODIFIED "2000-06-29" PRAGMA ID_AND_VERSION "8411.110.00.007" VALTAB VAL_c_id VAL 0 DTI_NSAPI_0 "escape mechanism for future extensions" VAL 1 DTI_NSAPI_1 "Point-To-Multipoint Multicast information" VAL 2 DTI_NSAPI_2 "reserved for future use" VAL 3 DTI_NSAPI_3 "reserved for future use" VAL 4 DTI_NSAPI_4 "reserved for future use" VAL 5 DTI_NSAPI_5 "dynamically allocated NSAPI value" VAL 6 DTI_NSAPI_6 "dynamically allocated NSAPI value" VAL 7 DTI_NSAPI_7 "dynamically allocated NSAPI value" VAL 8 DTI_NSAPI_8 "dynamically allocated NSAPI value" VAL 9 DTI_NSAPI_9 "dynamically allocated NSAPI value" VAL 10 DTI_NSAPI_10 "dynamically allocated NSAPI value" VAL 11 DTI_NSAPI_11 "dynamically allocated NSAPI value" VAL 12 DTI_NSAPI_12 "dynamically allocated NSAPI value" VAL 13 DTI_NSAPI_13 "dynamically allocated NSAPI value" VAL 14 DTI_NSAPI_14 "dynamically allocated NSAPI value" VAL 15 DTI_NSAPI_15 "dynamically allocated NSAPI value" VAL 5 DTI_C_ID_DEFAULT "Default value for c_id" VALTAB VAL_p_id VAL 0x21 DTI_PID_IP "simple ip packet" VAL 0x2D DTI_PID_CTCP "Van Jacobson compressed TCP/IP header" VAL 0x2F DTI_PID_UTCP "Van Jacobson uncompressed TCP/IP header" VAL 0x00 DTI_PID_FRAME "PPP frame" VALTAB VAL_op_ack VAL 0x01 OP_ACK "acknowledged operation mode" VAL 0x00 OP_UNACK "unacknowledged operation mode" VALTAB VAL_st_flow VAL 0 DTI_FLOW_ON "flow control is inactive" VAL 1 DTI_FLOW_OFF "flow control is active" VALTAB VAL_st_line_sa VAL 0 DTI_SA_ON "SA is inactive" VAL 1 DTI_SA_OFF "SA is active" VALTAB VAL_st_line_sb VAL 0 DTI_SB_ON "SB is inactive" VAL 1 DTI_SB_OFF "SB is active" VALTAB VAL_st_escape VAL 0 DTI_ESC_OFF "No escape detected" VAL 1 DTI_ESC_ON "Escape detected" VAR list_len "length in octets of whole data" S VAR first "pointer to first generic data descriptor" L VAR next "next generic data descriptor" L VAR len "length of content in octets" S VAR buffer "buffer content" B VAR tui "transmission unit identifier" S VAR c_id "channel identifier" B VAL @p_dti - VAL_c_id@ VAR p_id "protocol identifier" B VAL @p_dti - VAL_p_id@ VAR op_ack "operation mode" B VAL @p_dti - VAL_op_ack@ VAR st_flow "flow control state" B VAL @p_dti - VAL_st_flow@ VAR st_line_sa "line state sa" B VAL @p_dti - VAL_st_line_sa@ VAR st_line_sb "line state sb" B VAL @p_dti - VAL_st_line_sb@ VAR st_escape "escape state" B VAL @p_dti - VAL_st_escape@ VAR l_buf "length of content in bit" S VAR o_buf "offset of content in bit" S VAR buf "test data" B COMP desc_list "list of generic data descriptors" { list_len ; length in octets of whole data first ; pointer to first generic data descriptor } COMP desc "generic data descriptor" { next ; next generic data descriptor len ; length of content in octets buffer [1] ; buffer content } COMP sdu "test data" { l_buf ; length of content in bit o_buf ; offset of content in bit buf [1] ; test data } ; DTI_READY_IND 0x7700 ; DTI_GETDATA_REQ 0x3700 ; DTI_DATA_REQ 0x3701 ; DTI_DATA_IND 0x7701 ; DTI_DATA_TEST_REQ 0x3702 ; DTI_DATA_TEST_IND 0x7702 ; DTI_DUMMY_REQ 0x3703 PRIM DTI_READY_IND 0x7700 { tui ; transmission unit identifier c_id ; channel identifier op_ack ; operation mode (acknowledged or not) } PRIM DTI_GETDATA_REQ 0x3700 { tui ; transmission unit identifier c_id ; channel identifier op_ack ; operation mode (acknowledged or not) } PRIM DTI_DATA_REQ 0x3701 { tui ; transmission unit identifier c_id ; channel identifier p_id ; protocol identifier op_ack ; operation mode (acknowledged or not) st_flow ; flow control state st_line_sa ; line state sa st_line_sb ; line state sb st_escape ; escape state desc_list ; list of generic data descriptors } PRIM DTI_DATA_IND 0x7701 { tui ; transmission unit identifier c_id ; channel identifier p_id ; protocol identifier op_ack ; operation mode (acknowledged or not) st_flow ; flow control state st_line_sa ; line state sa st_line_sb ; line state sb st_escape ; escape state desc_list ; list of generic data descriptors } PRIM DTI_DATA_TEST_REQ 0x3702 { tui ; transmission unit identifier c_id ; channel identifier p_id ; protocol identifier op_ack ; operation mode (acknowledged or not) st_flow ; flow control state st_line_sa ; line state sa st_line_sb ; line state sb st_escape ; escape state sdu ; test data } PRIM DTI_DATA_TEST_IND 0x7702 { tui ; transmission unit identifier c_id ; channel identifier p_id ; protocol identifier op_ack ; operation mode (acknowledged or not) st_flow ; flow control state st_line_sa ; line state sa st_line_sb ; line state sb st_escape ; escape state sdu ; test data } PRIM DTI_DUMMY_REQ 0x3703 { desc ; generic data descriptor }