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MMDVM
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fix proper PDU reception and processing;

This commit is contained in:
Bryan Biedenkapp 2018-10-08 10:19:31 -04:00
parent d7526891c5
commit 3bae422a8e
2 changed files with 18 additions and 1 deletions
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5
P25Defines.h
View File

@ -47,6 +47,11 @@ const unsigned int P25_TSDU_FRAME_LENGTH_BITS = P25_TSDU_FRAME_LENGTH_BYTES
const unsigned int P25_TSDU_FRAME_LENGTH_SYMBOLS = P25_TSDU_FRAME_LENGTH_BYTES * 4U;
const unsigned int P25_TSDU_FRAME_LENGTH_SAMPLES = P25_TSDU_FRAME_LENGTH_SYMBOLS * P25_RADIO_SYMBOL_LENGTH;
const unsigned int P25_PDU_HDR_FRAME_LENGTH_BYTES = 45U;
const unsigned int P25_PDU_HDR_FRAME_LENGTH_BITS = P25_PDU_HDR_FRAME_LENGTH_BYTES * 8U;
const unsigned int P25_PDU_HDR_FRAME_LENGTH_SYMBOLS = P25_PDU_HDR_FRAME_LENGTH_BYTES * 4U;
const unsigned int P25_PDU_HDR_FRAME_LENGTH_SAMPLES = P25_PDU_HDR_FRAME_LENGTH_SYMBOLS * P25_RADIO_SYMBOL_LENGTH;
const unsigned int P25_SYNC_LENGTH_BYTES = 6U;
const unsigned int P25_SYNC_LENGTH_BITS = P25_SYNC_LENGTH_BYTES * 8U;
const unsigned int P25_SYNC_LENGTH_SYMBOLS = P25_SYNC_LENGTH_BYTES * 4U;

14
P25RX.cpp
View File

@ -199,7 +199,19 @@ void CP25RX::processHdr(q15_t sample)
serial.writeP25Hdr(frame, P25_HDR_FRAME_LENGTH_BYTES + 1U);
}
break;
case P25_DUID_TSDU: {
case P25_DUID_PDU: {
calculateLevels(m_hdrSyncPtr, P25_PDU_HDR_FRAME_LENGTH_SYMBOLS);
DEBUG4("P25RX: sync found in PDU pos/centre/threshold", m_hdrSyncPtr, m_centreVal, m_thresholdVal);
uint8_t frame[P25_PDU_HDR_FRAME_LENGTH_BYTES + 1U];
samplesToBits(m_hdrSyncPtr, P25_PDU_HDR_FRAME_LENGTH_SYMBOLS, frame, 8U, m_centreVal, m_thresholdVal);
frame[0U] = 0x01U;
serial.writeP25Hdr(frame, P25_PDU_HDR_FRAME_LENGTH_BYTES + 1U);
}
break;
case P25_DUID_TSDU: {
calculateLevels(m_hdrStartPtr, P25_TSDU_FRAME_LENGTH_SYMBOLS);
DEBUG4("P25RX: sync found in TSDU pos/centre/threshold", m_hdrSyncPtr, m_centreVal, m_thresholdVal);