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Fix DMR FEC/CRC/RAS Implementation Issues;

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lwvmobile
2023-01-21 05:43:42 -05:00
parent ac752029bd
commit d0f9bb4bad
10 changed files with 165 additions and 66 deletions
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22
src/bptc.c
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@@ -199,18 +199,10 @@ uint32_t BPTC_196x96_Extract_Data(uint8_t InputDeInteleavedData[196], uint8_t DM
}
}
/* R(0) to R(2) may be used to transport some
* Restricted Access System (RAS) information,
* So save these three bytes before reset all of them
* See patent US 2013/0288643 A1 */
R[0] = DataMatrix[0][2]; /* Save R(0) */
R[1] = DataMatrix[0][1]; /* Save R(1) */
R[2] = DataMatrix[0][0]; /* Save R(2) */
/* Set to 0 R(0) to R(2) - See DMR standard chapter B1.1 BPTC (196,96) */
DataMatrix[0][0] = 0; /* R(2) */
DataMatrix[0][1] = 0; /* R(1) */
DataMatrix[0][2] = 0; /* R(0) */
// DataMatrix[0][0] = 0; /* R(2) */
// DataMatrix[0][1] = 0; /* R(1) */
// DataMatrix[0][2] = 0; /* R(0) */
/* Init the Hamming (15,11,3) library
* Not needed because it has already been done
@@ -363,6 +355,14 @@ uint32_t BPTC_196x96_Extract_Data(uint8_t InputDeInteleavedData[196], uint8_t DM
}
}
/* R(0) to R(2) may be used to transport some
* Restricted Access System (RAS) information,
* So save these three bits after hamming correction
* See patent US 2013/0288643 A1 */
R[0] = DataMatrix[0][2]; /* Save R(0) */
R[1] = DataMatrix[0][1]; /* Save R(1) */
R[2] = DataMatrix[0][0]; /* Save R(2) */
/* Return the number of irrecoverable Hamming errors */
return HammingIrrecoverableErrorNb;
} /* End BPTC_196x96_Extract_Data() */