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Improved tone generator for proper frequency control. Also

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features a square wave mode.
Added proportional beep duration based on the RSSI as well.
Now reading the current radiosonde frequency from the
battery backed RAM instead starting with the same frequency
all the time.
This commit is contained in:
teixeluis 2021-06-16 23:23:47 +01:00
parent a80d91fb1e
commit 8aff0bb4d8
5 changed files with 25 additions and 22 deletions
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8
firmware/baseband/proc_sonde.cpp
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@ -35,7 +35,7 @@ SondeProcessor::SondeProcessor() {
audio_output.configure(false);
tone_gen.configure(0, 1, ToneGen::tone_type::square);
tone_gen.configure(BEEP_BASE_FREQ, 1.0, ToneGen::tone_type::sine, AUDIO_SAMPLE_RATE);
}
void SondeProcessor::execute(const buffer_c8_t& buffer) {
@ -135,9 +135,11 @@ void SondeProcessor::generate_silence() {
void SondeProcessor::pitch_rssi_config(const PitchRSSIConfigureMessage& message) {
pitch_rssi_enabled = message.enabled;
uint32_t tone_delta = (int) ((float) message.rssi * (float) RSSI_PITCH_WEIGHT + (float) 1000) * ((float) (1ULL << 32) / (float) 24000);
uint32_t freq = (int) ((float) message.rssi * (float) RSSI_PITCH_WEIGHT + (float) BEEP_BASE_FREQ);
last_rssi = message.rssi;
tone_gen.configure(tone_delta, 1.0, ToneGen::tone_type::square);
tone_gen.configure(freq, 1.0, ToneGen::tone_type::sine, AUDIO_SAMPLE_RATE);
}
int main() {