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lmic/radio.c: Fix RSSI and SNR calculation

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This commit is contained in:
Klaus K Wilting 2018-09-13 21:50:45 +02:00
parent c963dbe1c6
commit 48734bca63
1 changed files with 6 additions and 2 deletions
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8
lib/arduino-lmic-1.5.0-arduino-2-tweaked/src/lmic/radio.c
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@ -790,8 +790,12 @@ void radio_irq_handler (u1_t dio) {
// now read the FIFO // now read the FIFO
readBuf(RegFifo, LMIC.frame, LMIC.dataLen); readBuf(RegFifo, LMIC.frame, LMIC.dataLen);
// read rx quality parameters // read rx quality parameters
LMIC.snr = readReg(LORARegPktSnrValue); // SNR [dB] * 4 //LMIC.snr = readReg(LORARegPktSnrValue); // SNR [dB] * 4
LMIC.rssi = readReg(LORARegPktRssiValue) - 125 + 64; // RSSI [dBm] (-196...+63) LMIC.snr = readReg(LORARegPktSnrValue) / 4;
//LMIC.rssi = readReg(LORARegPktRssiValue) - 125 + 64; // RSSI [dBm] (-196...+63)
LMIC.rssi = readReg(LORARegPktRssiValue) - 157; // RFI_HF for 868 and 915MHZ band
if (LMIC.snr < 0)
LMIC.rssi += LMIC.snr;
} else if( flags & IRQ_LORA_RXTOUT_MASK ) { } else if( flags & IRQ_LORA_RXTOUT_MASK ) {
// indicate timeout // indicate timeout
LMIC.dataLen = 0; LMIC.dataLen = 0;