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DMR SB/RC Additions; Cap+ LC/CSBK; RAS;

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lwvmobile
2023-01-17 23:58:52 -05:00
parent 1d49481f2d
commit ec7d7c24a5
11 changed files with 383 additions and 38 deletions
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40
src/bptc.c
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@@ -134,6 +134,13 @@ const uint8_t DeInterleaveReverseChannelBptc[32] =
24, 9, 26, 11, 28, 13, 30, 15
};
const uint8_t DeInterleaveReverseChannelBptcPlacement[32] =
{
0, 16, 1, 17, 2, 18, 3, 19,
4, 20, 5, 21, 6, 22, 7, 23,
8, 24, 9, 25, 10, 26, 11, 27,
12, 28, 13, 29, 14, 30, 15, 31
};
/* Functions ----------------------------------------------------------------*/
@@ -498,33 +505,38 @@ uint32_t BPTC_128x77_Extract_Data(uint8_t InputDataMatrix[8][16], uint8_t DMRDat
* DMRDataExtracted[11..15] = Hamming data
* DMRDataExtracted[16..31] = 16 bits of odd parity (to be checked)
*
* @param ParityCheckTypeOdd : 0 = Parity to check is even (used in Non-Reverse Channel Single Burst BPTC)
* 1 = Parity to check is odd (used in Reverse Channel Single Burst BPTC)
*
* @return 0 = All is OK
* Other = Error - Irrecoverable Hamming parity check error number
*/
uint32_t BPTC_16x2_Extract_Data(uint8_t InputInterleavedData[32], uint8_t DMRDataExtracted[32])
uint32_t BPTC_16x2_Extract_Data(uint8_t InputInterleavedData[32], uint8_t DMRDataExtracted[32], uint32_t ParityCheckTypeOdd)
{
uint32_t i;
uint8_t DataMatrix[32];
uint8_t LineUncorrected[16];
uint8_t LineCorrected[11];
uint32_t HammingIrrecoverableErrorNb = 0;
uint32_t ParityCheckErrorNb = 0;
uint32_t ParityCheckOddErrorNb = 0;
uint32_t ParityCheckEvenErrorNb = 0;
//TODO: make this so we can load either rc interleave, or single burst interleave
for(i = 0; i < 32; i++)
{
DataMatrix[DeInterleaveReverseChannelBptc[i]] = InputInterleavedData[i] & 1;
DataMatrix[DeInterleaveReverseChannelBptcPlacement[DeInterleaveReverseChannelBptc[i]]] = InputInterleavedData[i] & 1;
}
/* Copy the entire input buffer to the output buffer */
for(i = 0; i < 32; i++)
{
DMRDataExtracted[i] = DataMatrix[i];
DMRDataExtracted[i] = DataMatrix[i] & 1;
}
/* Prepare the line to be corrected */
for(i = 0; i < 16; i++)
{
LineUncorrected[i] = DataMatrix[i];
LineUncorrected[i] = DataMatrix[i] & 1;
}
/* Apply Hamming (16,11,4) code correction */
@@ -536,7 +548,7 @@ uint32_t BPTC_16x2_Extract_Data(uint8_t InputInterleavedData[32], uint8_t DMRDat
/* Copy the corrected content to the output buffer */
for(i = 0; i < 11; i++)
{
DMRDataExtracted[i] = LineCorrected[i];
DMRDataExtracted[i] = LineCorrected[i] & 1;
}
/* Check Parity bits */
@@ -544,14 +556,24 @@ uint32_t BPTC_16x2_Extract_Data(uint8_t InputInterleavedData[32], uint8_t DMRDat
{
/* Odd parity ==> If data = 1 then parity = 0
* If data = 0 then parity = 1 */
if(DMRDataExtracted[i] == DMRDataExtracted[i + 16]) ParityCheckErrorNb++;
if((DMRDataExtracted[i] & 1) == (DMRDataExtracted[i + 16] & 1)) ParityCheckOddErrorNb++;
if((DMRDataExtracted[i] & 1) != (DMRDataExtracted[i + 16] & 1)) ParityCheckEvenErrorNb++;
}
//fprintf(stderr, "Hamming ERR=%u ; Parity ERR=%u", HammingIrrecoverableErrorNb, ParityCheckErrorNb);
//fprintf(stderr, "Hamming ERR=%u ; Parity odd ERR=%u, Parity even ERR=%u, ", HammingIrrecoverableErrorNb, ParityCheckOddErrorNb, ParityCheckEvenErrorNb);
//fprintf(stderr, "Content =\n");
//for(i = 0; i < 32; i++)
//{
// fprintf(stderr, "%u", DMRDataExtracted[i] & 1);
// if((i == 15) || (i == 31)) fprintf(stderr, "\n");
// else fprintf(stderr, "-");
//}
/* Return the number of irrecoverable Hamming errors +
* the number of parity check error */
return (HammingIrrecoverableErrorNb + ParityCheckErrorNb);
if(ParityCheckTypeOdd) return (HammingIrrecoverableErrorNb + ParityCheckOddErrorNb);
else return (HammingIrrecoverableErrorNb + ParityCheckEvenErrorNb);
} /* End BPTC_16x2_Extract_Data() */