Method setFrequency

RFM69.cpp:161–174

set the frequency (in Hz)

// set the frequency (in Hz)
void RFM69::setFrequency(uint32_t freqHz) {
  uint8_t oldMode = _mode;
  if (oldMode == RF69_MODE_TX) {
    setMode(RF69_MODE_RX);
  }
  freqHz /= RF69_FSTEP; // divide down by FSTEP to get FRF
  writeReg(REG_FRFMSB, freqHz >> 16);
  writeReg(REG_FRFMID, freqHz >> 8);
  writeReg(REG_FRFLSB, freqHz);
  if (oldMode == RF69_MODE_RX) {
    setMode(RF69_MODE_SYNTH);
  }
  setMode(oldMode);
}

// return the frequency deviation (in Hz)
uint32_t RFM69::getFrequencyDeviation() {