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[CC1101] 3 New CC1101 Functions (#1038)

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* getFrequency implementation

* getFrequency Method

* Get bitrate method

* getBitRate

* CalcRxBandwidth() method

* CalcRxBandwidth();

* Fix Notes

* Changes for pull

* Changes for pull 2

* Update keywords.txt

* Revert to hopefully bring in current

* Fix ()

* Re add
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Crsarmv7l 2024-03-28 13:44:10 -04:00 • committed by GitHub
parent 0707a326a5
commit 1fb5100413
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1
keywords.txt
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@ -134,6 +134,7 @@ getSNR KEYWORD2
getDataRate KEYWORD2
setBitRate KEYWORD2
setRxBandwidth KEYWORD2
autoSetRxBandwidth KEYWORD2
setAFCBandwidth KEYWORD2
setAFC KEYWORD2
setAFCAGCTrigger KEYWORD2

18
src/modules/CC1101/CC1101.cpp
View file

@ -489,6 +489,24 @@ int16_t CC1101::setRxBandwidth(float rxBw) {
return(RADIOLIB_ERR_INVALID_RX_BANDWIDTH);
}
int16_t CC1101::autoSetRxBandwidth() {
// Uncertainty ~ +/- 40ppm for a cheap CC1101
// Uncertainty * 2 for both transmitter and receiver
float uncertainty = ((this->frequency) * 40 * 2);
uncertainty = (uncertainty/1000); //Since bitrate is in kBit
float minbw = ((this->bitRate) + 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);
}
}
return(RADIOLIB_ERR_UNKNOWN);
}
int16_t CC1101::setFrequencyDeviation(float freqDev) {
// set frequency deviation to lowest available setting (required for digimodes)
float newFreqDev = freqDev;

8
src/modules/CC1101/CC1101.h
View file

@ -745,6 +745,14 @@ class CC1101: public PhysicalLayer {
*/
int16_t setRxBandwidth(float rxBw);
/*!
\brief calculates and sets Rx bandwidth based on the freq, baud and freq uncertainty.
Reimplement of atlas0fd00m's (RfCat) CalculatePktChanBw function.
Modified for worse ppm with the CC1101, and adjusted for the supportted CC1101 bw.
\returns \ref status_codes
*/
int16_t autoSetRxBandwidth();
/*!
\brief Sets frequency deviation. Allowed values range from 1.587 to 380.8 kHz.
\param freqDev Frequency deviation to be set in kHz.