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Handle GC1109 LNA gain variance properly

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Mark Qvist 2025-11-22 00:04:56 +01:00
parent b8ab1caf96
commit 7b0658b197
4 changed files with 36 additions and 7 deletions
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15
RNode_Firmware.ino
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@ -1383,6 +1383,8 @@ void update_noise_floor() {
#define LED_ID_TRIG 16
uint8_t led_id_filter = 0;
uint32_t interference_start = 0;
bool interference_persists = false;
void update_modem_status() {
#if MCU_VARIANT == MCU_ESP32
portENTER_CRITICAL(&update_lock);
@ -1404,6 +1406,19 @@ void update_modem_status() {
if (interference_detected) { if (led_id_filter < LED_ID_TRIG) { led_id_filter += 1; } }
else { if (led_id_filter > 0) {led_id_filter -= 1; } }
// Handle potential false interference detection due to
// LNA recalibration, antenna swap, moving into new RF
// environment or similar.
if (interference_detected && current_rssi < CSMA_RFENV_RECAL_LIMIT_DB) {
if (!interference_persists) {
interference_persists = true; interference_start = millis();
} else {
if (millis()-interference_start >= CSMA_RFENV_RECAL_MS) { noise_floor_sampled = false; interference_persists = false; }
}
} else {
interference_persists = false;
}
if (carrier_detected) { dcd = true; } else { dcd = false; }
dcd_led = dcd;