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DMR Conf Data CRC9; Message CRC32; Tweaks;

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lwvmobile
2023-02-01 05:35:21 -05:00
parent 20ccdbbced
commit f3505269d0
4 changed files with 273 additions and 47 deletions
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117
src/dmr_block.c
View File

@@ -51,7 +51,14 @@ void dmr_dheader (dsd_opts * opts, dsd_state * state, uint8_t dheader[], uint32_
if ( (state->data_header_format[slot] & 0xF) == 0xD) //DD_HEAD
{
state->data_conf_data[slot] = 0;
//The Response Requested (A) information element of the header shall be set to 0 for unconfirmed data and shall be set
//to 1 for confirmed data. ETSI TS 102 361-3 V1.2.1 (2013-07) - 6.1.2
if ( (state->data_header_format[slot] & 0x40) == 0x40 && state->data_p_head[slot] == 0) //check response req bit
{
state->data_conf_data[slot] = 1;
}
else state->data_conf_data[slot] = 0;
state->data_header_padding[slot] = dheader[7] & 0xF;
state->data_header_blocks[slot] = ( (dheader[0] & 0x30) | ((dheader[1] & 0xF) >> 0) ); //what a pain MSB | LSB
fprintf (stderr, "\n Short Data - Defined: DPF %01X - SAP %02X - Appended Blocks %02X - Padding Bits %02X",
@@ -61,7 +68,14 @@ void dmr_dheader (dsd_opts * opts, dsd_state * state, uint8_t dheader[], uint32_
if ( (state->data_header_format[slot] & 0xF) == 0xE) //SP_HEAD or R_HEAD
{
state->data_conf_data[slot] = 0;
//The Response Requested (A) information element of the header shall be set to 0 for unconfirmed data and shall be set
//to 1 for confirmed data. ETSI TS 102 361-3 V1.2.1 (2013-07) - 6.2.2
if ( (state->data_header_format[slot] & 0x40) == 0x40 && state->data_p_head[slot] == 0) //check response req bit
{
state->data_conf_data[slot] = 1;
}
else state->data_conf_data[slot] = 0;
state->data_header_padding[slot] = dheader[7] & 0xF;
state->data_header_blocks[slot] = ( (dheader[0] & 0x30) | ((dheader[1] & 0xF) >> 0) );
fprintf (stderr, "\n Short Data - Raw or Precoded: DPF %01X - SAP %02X - Appended Blocks %02X - Padding Bits %02X",
@@ -261,16 +275,17 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
int i, j, k;
uint8_t lb = 0; //mbc last block
uint8_t pf = 0; //mbc protect flag
uint8_t is_conf_data = 0; //internal flag to see if type 1 blocks contain confirmed data crcs and serials
// uint8_t is_conf_data = 0; //internal flag to see if type 1 blocks contain confirmed data crcs and serials
uint8_t slot = state->currentslot;
int blocks;
uint8_t blockcounter = state->data_block_counter[slot];
uint8_t block_num = state->data_header_blocks[slot];
//crc specific variables
uint8_t len = 24; //len of completed message needing crc32 number of blocks*block_len - 12?
uint8_t crclen = 32; //len of the crc32 (obviously)
uint8_t start = 12; //starting position (+12 offset loaded up data header)
uint8_t n = 12; //number of bytes per block
// uint8_t len = 24;
// uint8_t crclen = 32; //len of the crc32 (obviously)
// uint8_t start = 12; //starting position (+12 offset loaded up data header)
// uint8_t n = 12; //number of bytes per block
//TODO: CRC check on Header, Blocks and full frames as appropriate
uint32_t CRCCorrect = 0;
@@ -278,7 +293,7 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
uint32_t CRCExtracted = 0;
uint32_t IrrecoverableErrors = 0;
uint8_t dmr_pdu_sf_bits[18*8*8]; //8 blocks at 18 bytes at 8 bits //just a large value to have plenty storage space
uint8_t dmr_pdu_sf_bits[8*8*50]; //give plenty of space so we don't go oob
//MBC Header and Block CRC
uint8_t mbc_crc_good[2]; //header and blocks crc pass/fail local storage
@@ -293,7 +308,8 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
if (block_len == 0) block_len = 18;
if (block_len > 24) block_len = 24;
//TODO: add CRC/FEC validation to each data header and each confirmed data block as well - type 1
//WIP: CRC32 on Completed Message Working! CRC9 on 3/4 Working! CRC9 or 1/2 and 1 still need testing - type 1
//may/will still fail on p_head data and blocks
if (type == 1)
{
//type 1 data block, shuffle method
@@ -312,8 +328,79 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
//time to send the completed 'superframe' to the DMR PDU message handler
if (state->data_block_counter[slot] == state->data_header_blocks[slot])
{
//TODO: CRC32 on completed messages
dmr_pdu (opts, state, block_len, state->dmr_pdu_sf[slot]);
//CRC32 on completed messages
for(i = 0, j = 0; i < (block_num * block_len); i++, j+=8)
{
dmr_pdu_sf_bits[j + 0] = (state->dmr_pdu_sf[slot][i] >> 7) & 0x01;
dmr_pdu_sf_bits[j + 1] = (state->dmr_pdu_sf[slot][i] >> 6) & 0x01;
dmr_pdu_sf_bits[j + 2] = (state->dmr_pdu_sf[slot][i] >> 5) & 0x01;
dmr_pdu_sf_bits[j + 3] = (state->dmr_pdu_sf[slot][i] >> 4) & 0x01;
dmr_pdu_sf_bits[j + 4] = (state->dmr_pdu_sf[slot][i] >> 3) & 0x01;
dmr_pdu_sf_bits[j + 5] = (state->dmr_pdu_sf[slot][i] >> 2) & 0x01;
dmr_pdu_sf_bits[j + 6] = (state->dmr_pdu_sf[slot][i] >> 1) & 0x01;
dmr_pdu_sf_bits[j + 7] = (state->dmr_pdu_sf[slot][i] >> 0) & 0x01;
}
//sanity check to prevent a negative or zero block_num or sending a negative value into the bit array
if (block_num < 1 || block_num == 0) block_num = 1;
CRCExtracted = 0;
//extract crc from last block, apply to completed 'superframe' minus header
for(i = 0; i < 32; i++)
{
CRCExtracted = CRCExtracted << 1;
CRCExtracted = CRCExtracted | (uint32_t)(dmr_pdu_sf_bits[i + (block_len * 8) * block_num - 32] & 1); //96
}
//rearrage for ridiculously stupid CRC32 LSO/MSO ordering
for(i = 0, j = 0; i < (block_num * block_len); i+=2, j+=16)
{
dmr_pdu_sf_bits[j + 0] = (state->dmr_pdu_sf[slot][i+1] >> 7) & 0x01;
dmr_pdu_sf_bits[j + 1] = (state->dmr_pdu_sf[slot][i+1] >> 6) & 0x01;
dmr_pdu_sf_bits[j + 2] = (state->dmr_pdu_sf[slot][i+1] >> 5) & 0x01;
dmr_pdu_sf_bits[j + 3] = (state->dmr_pdu_sf[slot][i+1] >> 4) & 0x01;
dmr_pdu_sf_bits[j + 4] = (state->dmr_pdu_sf[slot][i+1] >> 3) & 0x01;
dmr_pdu_sf_bits[j + 5] = (state->dmr_pdu_sf[slot][i+1] >> 2) & 0x01;
dmr_pdu_sf_bits[j + 6] = (state->dmr_pdu_sf[slot][i+1] >> 1) & 0x01;
dmr_pdu_sf_bits[j + 7] = (state->dmr_pdu_sf[slot][i+1] >> 0) & 0x01;
dmr_pdu_sf_bits[j + 8] = (state->dmr_pdu_sf[slot][i] >> 7) & 0x01;
dmr_pdu_sf_bits[j + 9] = (state->dmr_pdu_sf[slot][i] >> 6) & 0x01;
dmr_pdu_sf_bits[j + 10] = (state->dmr_pdu_sf[slot][i] >> 5) & 0x01;
dmr_pdu_sf_bits[j + 11] = (state->dmr_pdu_sf[slot][i] >> 4) & 0x01;
dmr_pdu_sf_bits[j + 12] = (state->dmr_pdu_sf[slot][i] >> 3) & 0x01;
dmr_pdu_sf_bits[j + 13] = (state->dmr_pdu_sf[slot][i] >> 2) & 0x01;
dmr_pdu_sf_bits[j + 14] = (state->dmr_pdu_sf[slot][i] >> 1) & 0x01;
dmr_pdu_sf_bits[j + 15] = (state->dmr_pdu_sf[slot][i] >> 0) & 0x01;
//increment extra 2 bytes on each nth byte (depends on data type 1/2, 3/4, 1) if conf data
if ( i == (block_len - 1) )
{
if (state->data_conf_data[slot] == 0) i+=2;
}
}
//confirmed working now!
CRCComputed = (uint32_t)ComputeCrc32Bit(dmr_pdu_sf_bits, ( block_num * block_len * 8) - 32);
//if the CRC32 is correct, I think its fair to assume we don't need to worry about if the
//individual CRC9s are correct on confirmed data blocks (but we can confirm now that they are all good)
if (CRCComputed == CRCExtracted) CRCCorrect = 1;
//test only running on good CRC or CRC/RAS bypass (aggressive_framesync)
if (CRCCorrect || opts->aggressive_framesync == 0) dmr_pdu (opts, state, block_len, state->dmr_pdu_sf[slot]);
if (CRCCorrect) ; //print nothing
else
{
fprintf (stderr, "%s", KRED);
fprintf (stderr, "\n Slot %d - Multi Block PDU Message CRC32 ERR", slot+1);
fprintf (stderr, "%s", KNRM);
state->data_conf_data[slot] = 0; //flag off conf data flag
state->data_header_format[slot] = 0; //zero out so we don't keep ascii printing
}
}
}
@@ -404,7 +491,7 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
if (opts->payload == 1 && type == 1 && state->data_block_counter[slot] == state->data_header_blocks[slot])
{
fprintf (stderr, "%s", KGRN);
fprintf (stderr, "\n Multi Block PDU Superframe - Slot [%d]\n ", slot+1);
fprintf (stderr, "\n Slot %d - Multi Block PDU Message\n ", slot+1);
for (i = 0; i < ((blocks+1)*block_len); i++)
{
fprintf (stderr, "[%02X]", state->dmr_pdu_sf[slot][i]);
@@ -413,6 +500,10 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
fprintf (stderr, "\n ");
}
}
//debug print
// fprintf (stderr, " CRC - EXT %X CMP %X", CRCExtracted, CRCComputed);
fprintf (stderr, "%s ", KNRM);
}
@@ -420,7 +511,7 @@ void dmr_block_assembler (dsd_opts * opts, dsd_state * state, uint8_t block_byte
if (opts->payload == 1 && type == 2 && lb == 1)
{
fprintf (stderr, "%s", KGRN);
fprintf (stderr, "\n MBC Multi Block PDU Superframe - Slot [%d]\n ", slot+1);
fprintf (stderr, "\n Slot %d - Multi Block Control Message\n ", slot+1);
for (i = 0; i < ((blocks+1)*block_len); i++)
{
fprintf (stderr, "[%02X]", state->dmr_pdu_sf[slot][i]);

191
src/dmr_dburst.c
View File

@@ -9,9 +9,9 @@
* 2022-12 DSD-FME Florida Man Edition
*-----------------------------------------------------------------------------*/
//TODO: CRC9 on confirmed data blocks; CRC32 on completed data sf;
//TODO: Reverse Channel Signalling - RC single burst BPTC/7-bit CRC
//TODO: Single Burst Embedded LC - Non-RC single burst LC - Look for Late Entry Alg/Key
//WIP: CRC9 on confirmed data blocks; CRC32 on completed data sf;
//WIP: Reverse Channel Signalling - RC single burst BPTC/7-bit CRC
//WIP: Single Burst Embedded LC - Non-RC single burst LC - Look for Late Entry Alg/Key
#include "dsd.h"
@@ -26,6 +26,12 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
uint8_t slot = state->currentslot;
uint8_t block = state->data_block_counter[slot];
//confirmed data
uint8_t dbsn = 0; //data block serial number for confirmed data blocks
uint8_t blockcounter = 0; //local block count
uint8_t confdatabits[250]; //array to reshuffle conf data block bits into sequence for crc9 check
memset (confdatabits, 0, sizeof(confdatabits));
//BPTC 196x96 Specific
uint8_t BPTCDeInteleavedData[196];
uint8_t BPTCDmrDataBit[96];
@@ -110,32 +116,31 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
pdu_len = 12; //12 bytes
sprintf(state->fsubtype, " DATA");
break;
//TODO - 1/2 0x0F0 - 3/4 0x1FF - Rate 1 0x10F
//going to set crclen and mask according to confirmed data here,
//use block assmebler to carry out completed message crc
case 0x07: //1/2 Rate Data
is_bptc = 1;
crclen = 9; //confirmed data only
crcmask = 0x0F0;
pdu_len = 12; //12 bytes unconfirmed
sprintf(state->fsubtype, " R12U ");
if (state->data_conf_data[slot] == 1)
{
pdu_len = 10;
pdu_start = 2; //start at plus two when assembling
sprintf(state->fsubtype, " R12C ");
}
sprintf(state->fsubtype, " R12D ");
break;
case 0x08: //3/4 Rate Data
is_trellis = 1;
crclen = 9; //confirmed data only
crcmask = 0x1FF;
pdu_len = 18; //18 bytes unconfirmed
sprintf(state->fsubtype, " R34U ");
if (state->data_conf_data[slot] == 1)
{
pdu_len = 16;
pdu_start = 2; //start at plus two when assembling
sprintf(state->fsubtype, " R34C ");
}
sprintf(state->fsubtype, " R34D ");
break;
case 0x09: //Idle
//pseudo-random data fill, no need to do anything with this
@@ -143,10 +148,16 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
break;
case 0x0A: //1 Rate Data
crclen = 9; //confirmed data only
crcmask = 0x1FF;
crcmask = 0x10F;
is_full = 1;
pdu_len = 25; //196 bits - 24.5 bytes
sprintf(state->fsubtype, " R_1D ");
pdu_len = 25; //196 bits - 24.5 bytes
sprintf(state->fsubtype, " R_1U ");
if (state->data_conf_data[slot] == 1)
{
pdu_len = 23;
pdu_start = 2; //start at plus two when assembling
sprintf(state->fsubtype, " R_1C ");
}
break;
case 0x0B: //Unified Data
is_bptc = 1;
@@ -155,6 +166,7 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
pdu_len = 12; //12 bytes
sprintf(state->fsubtype, " UDAT ");
break;
//special types (not real data 'sync' bursts)
case 0xEB: //Embedded Signalling
crclen = 5;
@@ -163,6 +175,12 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
break;
default:
//Slot Type FEC should catch this so we never see it,
//but if it doesn't, then we can still dump the entire 'packet'
//treat like rate 1 unconfirmed data
is_full = 1;
pdu_len = 25; //196 bits - 24.5 bytes
sprintf(state->fsubtype, " _UNK ");
break;
}
@@ -240,10 +258,39 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
/* Check/correct the BPTC data and compute the Reed-Solomon (12,9) CRC */
if (is_lc) CRCCorrect = ComputeAndCorrectFullLinkControlCrc(BPTCDmrDataByte, &CRCComputed, crcmask);
//TODO: run CRC9 on confirmed 1/2 data blocks
else if (state->data_conf_data[slot] == 1)
//set CRC to correct on unconfirmed 1/2 data blocks (for reporting due to no CRC available on these)
else if (state->data_conf_data[slot] == 0 && databurst == 0x7)
{
//run CRC on individual blocks according to type and validate each individual block
CRCComputed = 0;
CRCExtracted = 0;
CRCCorrect = 1;
}
//set CRC to correct on proprietary data header blocks (unsure if p_head data has valid crcs,
//may be ras enabled, manufacturer specific, or none, currently unknown, but possibly RAS on samples I have)
// else if (state->data_p_head[slot] == 1 && databurst == 0x06) CRCCorrect = 1;
//run CRC9 on intermediate and last 1/2 confirmed data blocks
else if (state->data_conf_data[slot] == 1 && databurst == 0x7)
{
blockcounter = state->data_block_counter[slot]; //current block number according to the counter
dbsn = (uint32_t)ConvertBitIntoBytes(&BPTCDmrDataBit[0], 7) + 1; //recover data block serial number
CRCExtracted = (uint32_t)ConvertBitIntoBytes(&BPTCDmrDataBit[7], 9); //extract CRC from data
CRCExtracted = CRCExtracted ^ crcmask;
//reorganize the BPTCDmrDataBit array into confdatabits, just for CRC9 check
//need to find a sample to confirm this
for(i = 0; i < 80; i++) confdatabits[i] = BPTCDmrDataBit[i + 16];
for(i = 0; i < 7; i++) confdatabits[i + 80] = BPTCDmrDataBit[i];
CRCComputed = ComputeCrc9Bit(confdatabits, 87);
if (CRCExtracted == CRCComputed)
{
CRCCorrect = 1;
state->data_block_crc_valid[slot][blockcounter] = 1;
}
else state->data_block_crc_valid[slot][blockcounter] = 0;
}
//run CCITT on other data forms
@@ -385,6 +432,50 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
DMR_PDU[i] = (uint8_t)TrellisReturn[i+pdu_start];
}
for(i = 0, j = 0; i < 18; i++, j+=8)
{
DMR_PDU_bits[j + 0] = (TrellisReturn[i] >> 7) & 0x01;
DMR_PDU_bits[j + 1] = (TrellisReturn[i] >> 6) & 0x01;
DMR_PDU_bits[j + 2] = (TrellisReturn[i] >> 5) & 0x01;
DMR_PDU_bits[j + 3] = (TrellisReturn[i] >> 4) & 0x01;
DMR_PDU_bits[j + 4] = (TrellisReturn[i] >> 3) & 0x01;
DMR_PDU_bits[j + 5] = (TrellisReturn[i] >> 2) & 0x01;
DMR_PDU_bits[j + 6] = (TrellisReturn[i] >> 1) & 0x01;
DMR_PDU_bits[j + 7] = (TrellisReturn[i] >> 0) & 0x01;
}
//set CRC to correct on unconfirmed 3/4 data blocks (for reporting due to no CRC available on these)
if (state->data_conf_data[slot] == 0) CRCCorrect = 1;
//run CRC9 on intermediate and last 3/4 data blocks
else if (state->data_conf_data[slot] == 1)
{
blockcounter = state->data_block_counter[slot]; //current block number according to the counter
dbsn = (uint32_t)ConvertBitIntoBytes(&DMR_PDU_bits[0], 7) + 1; //recover data block serial number
CRCExtracted = (uint32_t)ConvertBitIntoBytes(&DMR_PDU_bits[7], 9); //extract CRC from data
CRCExtracted = CRCExtracted ^ crcmask;
//reorganize the DMR_PDU_bits array into confdatabits, just for CRC9 check
//confirmed working now!
for(i = 0; i < 128; i++) confdatabits[i] = DMR_PDU_bits[i + 16];
for(i = 0; i < 7; i++) confdatabits[i + 128] = DMR_PDU_bits[i];
CRCComputed = ComputeCrc9Bit(confdatabits, 135);
if (CRCExtracted == CRCComputed)
{
CRCCorrect = 1;
state->data_block_crc_valid[slot][blockcounter] = 1;
}
else
{
IrrecoverableErrors = 9; //set as a shim since the trellis decoder is a pain to fix
state->data_block_crc_valid[slot][blockcounter] = 0;
}
}
//reorganize the DMR_PDU_bits into PDU friendly format (minus the dbsn and crc9)
memset (DMR_PDU_bits, 0, sizeof(DMR_PDU_bits));
for(i = 0, j = 0; i < pdu_len; i++, j+=8)
{
DMR_PDU_bits[j + 0] = (TrellisReturn[i+pdu_start] >> 7) & 0x01;
@@ -397,17 +488,13 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
DMR_PDU_bits[j + 7] = (TrellisReturn[i+pdu_start] >> 0) & 0x01;
}
//TODO: run CRC9 on confirmed 3/4 data blocks
}
if (is_full) //Rate 1 Data
{
CRCExtracted = 0;
CRCComputed = 0;
IrrecoverableErrors = 0;
//TODO: run CRC9 on confirmed data
IrrecoverableErrors = 0; //implicit, since there is no encoding
for (i = 0; i < 24; i++)
{
@@ -418,6 +505,32 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
DMR_PDU[25] = (uint8_t)ConvertBitIntoBytes(&info[192], 4);
DMR_PDU[25] = DMR_PDU[25] << 4;
//set CRC to correct on unconfirmed 1 rate data blocks (for reporting due to no CRC available on these)
if (state->data_conf_data[slot] == 0) CRCCorrect = 1;
//run CRC9 on intermediate and last 1 rate data blocks
else if (state->data_conf_data[slot] == 1)
{
blockcounter = state->data_block_counter[slot]; //current block number according to the counter
dbsn = (uint32_t)ConvertBitIntoBytes(&info[0], 7) + 1; //recover data block serial number
CRCExtracted = (uint32_t)ConvertBitIntoBytes(&info[7], 9); //extract CRC from data
CRCExtracted = CRCExtracted ^ crcmask;
//reorganize the info bit array into confdatabits, just for CRC9 check
//unconfirmed, haven't seen any samples with rate 1 data
for(i = 0; i < 176; i++) confdatabits[i] = info[i + 16];
for(i = 0; i < 7; i++) confdatabits[i + 176] = info[i];
CRCComputed = ComputeCrc9Bit(confdatabits, 183);
if (CRCExtracted == CRCComputed)
{
CRCCorrect = 1;
state->data_block_crc_valid[slot][blockcounter] = 1;
}
else state->data_block_crc_valid[slot][blockcounter] = 0;
}
//copy info to dmr_pdu_bits
memcpy(DMR_PDU_bits, info, sizeof(DMR_PDU_bits));
@@ -436,13 +549,12 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
if (databurst == 0x06) dmr_dheader (opts, state, DMR_PDU, CRCCorrect, IrrecoverableErrors);
if (databurst == 0x07) dmr_block_assembler (opts, state, DMR_PDU, pdu_len, databurst, 1); //1/2 Rate Data
if (databurst == 0x08) dmr_block_assembler (opts, state, DMR_PDU, pdu_len, databurst, 1); //3/4 Rate Data
//if (databurst == 0x0A) dmr_block_assembler (opts, state, DMR_PDU, pdu_len, databurst, 1); //Full Rate Data - Disabled until further testing can be done
if (databurst == 0x0A) dmr_block_assembler (opts, state, DMR_PDU, pdu_len, databurst, 1); //Full Rate Data
//is unified data handled like normal data, or control signalling data?
//my best understanding is that unified data carries supplimentary MS data on TIII systems, not control signalling
if (databurst == 0x0B) dmr_block_assembler (opts, state, DMR_PDU, pdu_len, databurst, 1); //Unified Data
//if (databurst == 0x0B) dmr_cspdu (opts, state, DMR_PDU_bits, DMR_PDU, CRCCorrect, IrrecoverableErrors);
//control signalling types (CSBK, MBC, UDT)
//control signalling types (CSBK, MBC)
if (databurst == 0x03) dmr_cspdu (opts, state, DMR_PDU_bits, DMR_PDU, CRCCorrect, IrrecoverableErrors);
//both MBC header and MBC continuation will go to the block_assembler - type 2, and then to dmr_cspdu
@@ -502,20 +614,31 @@ void dmr_data_burst_handler(dsd_opts * opts, dsd_state * state, uint8_t info[196
fprintf (stderr, "[%02X]", DMR_PDU[i]);
}
//debug print
// if (dbsn) fprintf (stderr, " SN %X", dbsn);
// fprintf (stderr, " CRC - EXT %X CMP %X", CRCExtracted, CRCComputed);
fprintf (stderr, "%s", KNRM);
// fprintf (stderr, "%s", KCYN);
// fprintf (stderr, "\n Hex to Ascii - ");
// for (i = 0; i < 12; i++)
// {
// if (DMR_PDU[i] <= 0x7E && DMR_PDU[i] >=0x20)
// {
// fprintf (stderr, "%c", DMR_PDU[i]);
// }
// else fprintf (stderr, ".");
// }
//short data - DD_HEAD, SP_HEAD or R_HEAD (Might do on TMS as well)
if ( (state->data_header_format[slot] & 0xF) == 0xD )
{
fprintf (stderr, "%s", KCYN);
fprintf (stderr, "\n Hex to Ascii - ");
for (i = 0; i < pdu_len; i++)
{
if (DMR_PDU[i] <= 0x7E && DMR_PDU[i] >=0x20)
{
fprintf (stderr, "%c", DMR_PDU[i]);
}
else fprintf (stderr, ".");
}
fprintf (stderr,"%s", KNRM);
}
fprintf (stderr,"%s", KNRM);
}
}

1
src/dmr_pdu.c
View File

@@ -51,6 +51,7 @@ void dmr_pdu (dsd_opts * opts, dsd_state * state, uint8_t block_len, uint8_t DMR
//maybe one day we will have more things to do here
state->data_conf_data[slot] = 0; //flag off confirmed data after processing it
state->data_p_head[slot] = 0; //flag off prop_head data after processing it
state->data_header_format[slot] = 0; //zero out so we don't keep ascii printing
}

11
src/dmr_utils.c
View File

@@ -424,6 +424,17 @@ uint32_t ComputeCrc32Bit(uint8_t * DMRData, uint32_t NbData)
}
}
//for whatever reason, we get the CRC returned in a reversed byte order (MSO LSO b***s***)
uint32_t a, b, c, d;
a = b = c = d = 0;
a = (CRC & 0xFF) << 24;
b = (CRC & 0xFF00) >> 8;
b = b << 16;
c = (CRC & 0xFF0000) >> 16;
c = c << 8;
d = (CRC & 0xFF000000) >> 24;
CRC = a + b + c + d;
/* Return the CRC */
return CRC;
} /* End ComputeCrc32Bit() */