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[SX128x] Added -1 as alias for lowest supported frequency deviation

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This commit is contained in:
jgromes 2021-02-13 17:41:46 +01:00
parent abbefd1226
commit f3c1887517
1 changed files with 8 additions and 2 deletions
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10
src/modules/SX126x/SX126x.cpp
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@ -732,11 +732,17 @@ int16_t SX126x::setFrequencyDeviation(float freqDev) {
if(getPacketType() != SX126X_PACKET_TYPE_GFSK) {
return(ERR_WRONG_MODEM);
}
// set frequency deviation to lowest available setting (required for digimodes)
float newFreqDev = freqDev;
if(freqDev < 0.0) {
newFreqDev = 0.6;
}
RADIOLIB_CHECK_RANGE(freqDev, 0.0, 200.0, ERR_INVALID_FREQUENCY_DEVIATION);
RADIOLIB_CHECK_RANGE(newFreqDev, 0.6, 200.0, ERR_INVALID_FREQUENCY_DEVIATION);
// calculate raw frequency deviation value
uint32_t freqDevRaw = (uint32_t)(((freqDev * 1000.0) * (float)((uint32_t)(1) << 25)) / (SX126X_CRYSTAL_FREQ * 1000000.0));
uint32_t freqDevRaw = (uint32_t)(((newFreqDev * 1000.0) * (float)((uint32_t)(1) << 25)) / (SX126X_CRYSTAL_FREQ * 1000000.0));
// check modulation parameters
/*if(2 * freqDevRaw + _br > _rxBwKhz * 1000.0) {