FreeCalypso > hg > fc-magnetite
view src/g23m-fad/fad/fad_rcvf.c @ 411:ee49b250774f
tpudrv10.c: initial rf_path[] reconstruction
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Fri, 19 Jan 2018 07:38:43 +0000 |
parents | 90eb61ecd093 |
children |
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/* +----------------------------------------------------------------------------- | Project : GSM-F&D (8411) | Modul : FAD_RCVF +----------------------------------------------------------------------------- | Copyright 2002 Texas Instruments Berlin, AG | All rights reserved. | | This file is confidential and a trade secret of Texas | Instruments Berlin, AG | The receipt of or possession of this file does not convey | any rights to reproduce or disclose its contents or to | manufacture, use, or sell anything it may describe, in | whole, or in part, without the specific written consent of | Texas Instruments Berlin, AG. +----------------------------------------------------------------------------- | Purpose : This Modul defines the procedures and functions for | the component Fax Adaptation 3.45 of the mobile station +----------------------------------------------------------------------------- */ #ifndef FAD_RCVF_C #define FAD_RCVF_C #endif #define ENTITY_FAD /*==== INCLUDES ===================================================*/ #include <string.h> #include "typedefs.h" #include "vsi.h" #include "macdef.h" #include "pconst.cdg" #include "custom.h" #include "gsm.h" #include "cnf_fad.h" #include "mon_fad.h" #include "prim.h" #include "pei.h" #include "tok.h" #include "ccdapi.h" #include "fad.h" /*==== CONST =======================================================*/ /*==== TYPES =======================================================*/ /*==== VAR EXPORT ==================================================*/ /*==== VAR LOCAL ===================================================*/ /*==== FUNCTIONS ===================================================*/ /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_init | +--------------------------------------------------------------------+ PURPOSE : initialise the fad data for the rcv formatter process */ GLOBAL void rcv_init (void) { T_RCV *rcv = &fad_data->rcv; TRACE_FUNCTION ("rcv_init()"); INIT_STATE (RCV, SYNC_RCV); INIT_STATE (RCVSUB, SUB_IDLE); rcv->data_in_rbm = FALSE; rcv->preamble_pending = FALSE; rcv->bcs_pending = TRUE; rcv->FlagFound = 0; rcv->train_flg = FALSE; /*???*/ rcv_ResetFormatter (); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_ResetFormatter | +--------------------------------------------------------------------+ PURPOSE : */ GLOBAL void rcv_ResetFormatter (void) { T_RCV *rcv = &fad_data->rcv; TRACE_FUNCTION ("rcv_ResetFormatter()"); SET_STATE (RCVSUB, SUB_IDLE); rcv->bytes_good = 0; rcv->bytes_expect = 0; rcv->bytes_rcvd = 0; rcv->prim_ready = FALSE; rcv->hdlc_len = 0; rcv->bcs_data_len = 0; rcv->data_bufpos = 0; } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : CheckBcsFrame | +--------------------------------------------------------------------+ PURPOSE : get number of correct IDENT and data bytes (BCS data) */ LOCAL void CheckBcsFrame (UBYTE *ident_ratio, UBYTE *info_ratio, UBYTE *bcs_data, UBYTE ident, UBYTE info, USHORT bcs_len) { UBYTE i, pream_good = 0, ident_good = 0; TRACE_FUNCTION ("CheckBcsFrame()"); if (!bcs_len) return; for (i = 0; i < bcs_len; bcs_data++, i++) { if (i & 0x01) { if (*bcs_data EQ info) pream_good++; } else { if (*bcs_data EQ ident) ident_good++; } } bcs_len >>= 1; if (bcs_len) { *ident_ratio = (ident_good * 100) / bcs_len; *info_ratio = (pream_good * 100) / bcs_len; } } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_FrameType | +--------------------------------------------------------------------+ PURPOSE : */ GLOBAL UBYTE rcv_FrameType(T_FD *pFD) { UBYTE *bcs_data, fr_type, len, ident_ratio, info_ratio; #ifdef _SIMULATION_ TRACE_FUNCTION ("rcv_FrameType()"); #endif fr_type = pFD->type; len = pFD->len; bcs_data = pFD->buf; switch (GET_STATE (RCV)) { case SYNC_RCV: switch (fr_type) { case FR_STATUS: CheckBcsFrame(&ident_ratio, &info_ratio, bcs_data, IDENT_BCS_REC, HDLC_FLAG, len); if (ident_ratio < BCS_TOLERANCE) return (FT_NONE); /* not a BCS frame */ if (info_ratio >= BCS_TOLERANCE) return (FT_PREAMBLE); break; case FR_TRAIN: CheckBcsFrame(&ident_ratio, &info_ratio, bcs_data, IDENT_MSG_REC, VAL_TRAIN, len); if (ident_ratio >= TRAIN_TOLERANCE) break; /* STATUS-TRAIN frame */ CheckBcsFrame(&ident_ratio, &info_ratio, bcs_data, IDENT_MSG_TRA, VAL_TRAIN, len); if (ident_ratio >= TRAIN_TOLERANCE) return (FT_TRAIN_RESPONSE); /* response to TRAINING */ return (FT_NONE); } break; case PREAM_RCV: switch (fr_type) { case FR_STATUS: CheckBcsFrame(&ident_ratio, &info_ratio, bcs_data, IDENT_BCS_REC, VAL_TCF, len); if (ident_ratio < BCS_TOLERANCE) return (FT_NONE); /* not a BCS frame */ if (info_ratio >= BCS_TOLERANCE) return (FT_PREAMBLE); break; default: return (FT_NONE); } break; case BCS_RCV: if (fr_type EQ FR_STATUS) { CheckBcsFrame(&ident_ratio, &info_ratio, bcs_data, IDENT_BCS_REC, HDLC_FLAG, len); if (ident_ratio < BCS_TOLERANCE) return (FT_NONE); /* not a BCS frame */ if (GET_STATE (RCVSUB) EQ SUB_PREAMBLE) { if (info_ratio EQ 100) return (FT_NONE); /* still receiving PREAMBLE */ SET_STATE (RCVSUB, SUB_DATA); } } break; default: break; } return (fr_type); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_SetHdlcFrame | +--------------------------------------------------------------------+ PURPOSE : set BCS data as HDLC frame for T30/ACI */ GLOBAL void rcv_SetHdlcFrame (T_FD *pFD, UBYTE *hdlc_data, USHORT *hdlc_len) { UBYTE *bcs_data = pFD->buf; USHORT flag_found = 0, i, k; #define HDLC_MAX 2 #ifdef _SIMULATION_ TRACE_FUNCTION ("rcv_SetHdlcFrame()"); #endif for (i = 0; i < pFD->len; i++, bcs_data++) { if (i & 0x0001) { *hdlc_data++ = *bcs_data; (*hdlc_len)++; /* * if preamble is disturbed * discard erroneous HDLC data */ if (*hdlc_len > HDLC_MAX) { /* * check last HDLC data; allow trailing HDLC flags */ for (k = *hdlc_len - HDLC_MAX; k < *hdlc_len; k++) { if (fad_data->rcv.hdlc[k] EQ HDLC_FLAG) { flag_found++; TRACE_EVENT("HDLC flags during SUB_DATA found"); } if (flag_found EQ HDLC_MAX) { TRACE_EVENT("HDLC buffer cleared again"); hdlc_data = fad_data->rcv.hdlc; *hdlc_len = 0; } } } } } } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_SetErrorRatio | +--------------------------------------------------------------------+ PURPOSE : calculate no. of correctly received TCF bytes */ GLOBAL void rcv_SetErrorRatio(T_FD *pFD) { void t30_ker_debug(CHAR *header, UBYTE *buf, USHORT len); UBYTE *buf = pFD->buf, i; TRACE_FUNCTION ("rcv_SetErrorRatio()"); #if defined TRACE_FAD_DL_TCF || defined _SIMULATION_ t30_ker_debug("TCF", buf, pFD->len); #endif for (i = 0; i < pFD->len; i++, buf++) { if (*buf EQ VAL_TCF) { fad_data->rcv.bytes_good++; } } } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_StoreMsgData | +--------------------------------------------------------------------+ PURPOSE : pass SDU to Receive Buffer Manager (RBM) */ GLOBAL BOOL rcv_StoreMsgData (T_FD *pFD, BOOL *primAvail) { TRACE_FUNCTION ("rcv_StoreMsgData()"); return rbm_store_frames(pFD, primAvail); } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_SetFinalBuffer | +--------------------------------------------------------------------+ PURPOSE : set RBM for final MSG data */ GLOBAL void rcv_SetFinalBuffer (void) { T_FAD_DATA_IND *fad_data_ind; TRACE_FUNCTION ("rcv_SetFinalBuffer()"); rcv_GetMsgData (&fad_data_ind, FALSE); sig_rcv_ker_msg_ind (fad_data_ind); fad_data->rcv.t30_req_frames = FALSE; } /* +--------------------------------------------------------------------+ | PROJECT : GSM-F&D (8411) MODULE : FAD_RCVF | | STATE : code ROUTINE : rcv_GetMsgData | +--------------------------------------------------------------------+ PURPOSE : */ GLOBAL BOOL rcv_GetMsgData (T_FAD_DATA_IND **fad_data_ind, BOOL data_incoming) { TRACE_FUNCTION ("rcv_GetMsgData()"); *fad_data_ind = rbm_get_prim (); if (data_incoming) { /* MSG data still being received */ if (*fad_data_ind EQ NULL) return FALSE; (*fad_data_ind)->final = FALSE; } else { /* MSG data no longer being received - SYNC detected */ if (*fad_data_ind NEQ NULL) (*fad_data_ind)->final = FALSE; else { *fad_data_ind = rbm_get_curr_prim (); /* buffer empty - end of MSG phase */ fad_data->rcv.data_in_rbm = FALSE; if (*fad_data_ind EQ NULL) return FALSE; (*fad_data_ind)->final = TRUE; } } return (TRUE); }