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start modularization

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KubaPro010
2025-06-21 15:06:27 +02:00
parent 33ffcd9682
commit 16f0a53c05
18 changed files with 79 additions and 43 deletions
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46
filter/bs412.c Normal file
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#include "bs412.h"
#define LOG2_19000 log2f(19000.0f)
inline float dbr_to_deviation(float dbr) {
return 19000.0f * powf(2.0f, dbr * 0.332193f);
}
inline float deviation_to_dbr(float deviation) {
if(deviation == 0.0f) return -100.0f;
return 10.0f * (log2f(deviation) - LOG2_19000) * 0.30103f;
}
void init_modulation_power_measure(MPXPowerMeasurement* mpx, int sample_rate) {
mpx->sample_counter = 0;
mpx->sample = 0;
mpx->sample_rate = sample_rate;
#ifdef BS412_DEBUG
debug_printf("Initialized MPX power measurement with sample rate: %d\n", sample_rate);
#endif
}
float measure_mpx(MPXPowerMeasurement* mpx, float deviation) {
mpx->sample += deviation * deviation; // rmS
mpx->sample_counter++;
float inv_counter = 1.0f / mpx->sample_counter;
float avg_deviation = sqrtf(mpx->sample * inv_counter); // RMs
float modulation_power = deviation_to_dbr(avg_deviation);
#ifdef BS412_DEBUG
if(mpx->sample_counter % mpx->sample_rate == 0) {
debug_printf("MPX power: %f dBr\n", modulation_power);
}
#endif
if (mpx->sample_counter >= mpx->sample_rate * 60) {
#ifdef BS412_DEBUG
debug_printf("Resetting MPX power measurement\n");
#endif
mpx->sample = avg_deviation * avg_deviation;
mpx->sample_counter = 1;
}
return modulation_power;
}