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Merge pull request #1591 from agessaman/fix-kiss-noise-floor

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fix(kiss): periodic noise floor calibration and AGC reset
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ripplebiz 2026-02-07 14:08:26 +11:00 • committed by GitHub
commit 6502067368
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4 changed files with 50 additions and 9 deletions
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21
examples/kiss_modem/main.cpp
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@ -12,9 +12,14 @@
#include <SPIFFS.h>
#endif
#define NOISE_FLOOR_CALIB_INTERVAL_MS 2000
#define AGC_RESET_INTERVAL_MS 30000
StdRNG rng;
mesh::LocalIdentity identity;
KissModem* modem;
static uint32_t next_noise_floor_calib_ms = 0;
static uint32_t next_agc_reset_ms = 0;
void halt() {
while (1) ;
@ -94,7 +99,14 @@ void loop() {
uint8_t packet[KISS_MAX_PACKET_SIZE];
uint16_t len;
// trigger noise floor calibration
if ((uint32_t)(millis() - next_noise_floor_calib_ms) >= NOISE_FLOOR_CALIB_INTERVAL_MS) {
radio_driver.triggerNoiseFloorCalibrate(0);
next_noise_floor_calib_ms = millis();
}
radio_driver.loop();
if (modem->getPacketToSend(packet, &len)) {
radio_driver.startSendRaw(packet, len);
while (!radio_driver.isSendComplete()) {
@ -104,14 +116,15 @@ void loop() {
modem->onTxComplete(true);
}
if ((uint32_t)(millis() - next_agc_reset_ms) >= AGC_RESET_INTERVAL_MS) {
radio_driver.resetAGC();
next_agc_reset_ms = millis();
}
uint8_t rx_buf[256];
int rx_len = radio_driver.recvRaw(rx_buf, sizeof(rx_buf));
if (rx_len > 0) {
int8_t snr = (int8_t)(radio_driver.getLastSNR() * 4);
int8_t rssi = (int8_t)radio_driver.getLastRSSI();
modem->onPacketReceived(snr, rssi, rx_buf, rx_len);
}
radio_driver.loop();
}