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CalcRxBandwidth() method

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Crsarmv7l 2024-03-27 01:30:28 -04:00 • committed by GitHub
parent 8dd4f63155
commit 025f5cfb65
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19
src/modules/CC1101/CC1101.cpp
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@ -499,6 +499,25 @@ int16_t CC1101::setRxBandwidth(float rxBw) {
return(RADIOLIB_ERR_INVALID_RX_BANDWIDTH);
}
int16_t CC1101::CalcRxBandwidth() {
// Uncertainty ~ +/- 40ppm for a cheap CC1101
// Uncertainty * 2 for both transmitter and receiver
float uncertainty = (getFrequency() * 40 * 2);
uncertainty = (uncertainty/1000); //Since bitrate is in khz
float minbw = (getBitRate() + uncertainty);
int possibles[16] = {58, 68, 81, 102, 116, 135, 162, 203, 232, 270, 325, 406, 464, 541, 650, 812};
for (int i = 0; i < 16; i++) {
if (possibles[i] > minbw) {
int16_t state = setRxBandwidth(possibles[i]);
return(state);
break;
}
}
}
int16_t CC1101::setFrequencyDeviation(float freqDev) {
// set frequency deviation to lowest available setting (required for digimodes)
float newFreqDev = freqDev;