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Added noise floor monitoring and reporting to host

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Mark Qvist 2025-01-09 14:46:13 +01:00
commit 06b4fba603
3 changed files with 33 additions and 1 deletions
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RNode_Firmware.ino
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@ -1191,6 +1191,30 @@ void serial_callback(uint8_t sbyte) {
bool medium_free() { update_modem_status(); return !dcd; }
bool noise_floor_sampled = false;
int noise_floor_sample = 0;
int noise_floor_buffer[NOISE_FLOOR_SAMPLES] = {0};
void update_noise_floor() {
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
if (!dcd) {
if (!noise_floor_sampled || current_rssi < noise_floor + CSMA_INFR_THRESHOLD_DB) {
noise_floor_buffer[noise_floor_sample] = current_rssi;
noise_floor_sample = noise_floor_sample+1;
if (noise_floor_sample >= NOISE_FLOOR_SAMPLES) {
noise_floor_sample %= NOISE_FLOOR_SAMPLES;
noise_floor_sampled = true;
}
if (noise_floor_sampled) {
noise_floor = 0;
for (int ni = 0; ni < NOISE_FLOOR_SAMPLES; ni++) { noise_floor += noise_floor_buffer[ni]; }
noise_floor /= NOISE_FLOOR_SAMPLES;
}
}
}
#endif
}
void update_modem_status() {
#if MCU_VARIANT == MCU_ESP32
portENTER_CRITICAL(&update_lock);
@ -1220,6 +1244,7 @@ void update_modem_status() {
void check_modem_status() {
if (millis()-last_status_update >= status_interval_ms) {
update_modem_status();
update_noise_floor();
#if MCU_VARIANT == MCU_ESP32 || MCU_VARIANT == MCU_NRF52
util_samples[dcd_sample] = dcd;