mirror of
https://github.com/meshcore-dev/MeshCore.git
synced 2026-03-30 14:55:46 +00:00
0fb570338f
- Trigger noise floor calibration every 2s and AGC reset every 30s in main loop. - Reorder loop to match Dispatcher: calibrate + radio.loop() before AGC reset and recvRaw() so RSSI is never sampled right after startReceive(). - Update protocol doc with calibration intervals and typical noise floor range. - Variant platformio.ini updates (heltec_v3, rak4631).
133 lines
3.6 KiB
C++
133 lines
3.6 KiB
C++
#include <Arduino.h>
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#include <target.h>
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#include <helpers/ArduinoHelpers.h>
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#include <helpers/IdentityStore.h>
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#include "KissModem.h"
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#if defined(NRF52_PLATFORM)
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#include <InternalFileSystem.h>
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#elif defined(RP2040_PLATFORM)
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#include <LittleFS.h>
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#elif defined(ESP32)
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#include <SPIFFS.h>
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#endif
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#define NOISE_FLOOR_CALIB_INTERVAL_MS 2000 // match Dispatcher default
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#define AGC_RESET_INTERVAL_MS 30000 // periodic RX restart so AGC doesn't drift (repeater uses same via prefs)
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StdRNG rng;
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mesh::LocalIdentity identity;
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KissModem* modem;
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static uint32_t next_noise_floor_calib_ms = 0;
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static uint32_t next_agc_reset_ms = 0;
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void halt() {
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while (1) ;
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}
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void loadOrCreateIdentity() {
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#if defined(NRF52_PLATFORM)
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InternalFS.begin();
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IdentityStore store(InternalFS, "");
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#elif defined(ESP32)
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SPIFFS.begin(true);
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IdentityStore store(SPIFFS, "/identity");
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#elif defined(RP2040_PLATFORM)
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LittleFS.begin();
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IdentityStore store(LittleFS, "/identity");
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store.begin();
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#else
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#error "Filesystem not defined"
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#endif
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if (!store.load("_main", identity)) {
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identity = radio_new_identity();
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while (identity.pub_key[0] == 0x00 || identity.pub_key[0] == 0xFF) {
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identity = radio_new_identity();
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}
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store.save("_main", identity);
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}
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}
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void onSetRadio(float freq, float bw, uint8_t sf, uint8_t cr) {
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radio_set_params(freq, bw, sf, cr);
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}
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void onSetTxPower(uint8_t power) {
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radio_set_tx_power(power);
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}
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float onGetCurrentRssi() {
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return radio_driver.getCurrentRSSI();
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}
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void onGetStats(uint32_t* rx, uint32_t* tx, uint32_t* errors) {
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*rx = radio_driver.getPacketsRecv();
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*tx = radio_driver.getPacketsSent();
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*errors = radio_driver.getPacketsRecvErrors();
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}
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void setup() {
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board.begin();
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if (!radio_init()) {
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halt();
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}
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radio_driver.begin();
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rng.begin(radio_get_rng_seed());
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loadOrCreateIdentity();
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Serial.begin(115200);
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uint32_t start = millis();
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while (!Serial && millis() - start < 3000) delay(10);
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delay(100);
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sensors.begin();
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modem = new KissModem(Serial, identity, rng, radio_driver, board, sensors);
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modem->setRadioCallback(onSetRadio);
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modem->setTxPowerCallback(onSetTxPower);
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modem->setGetCurrentRssiCallback(onGetCurrentRssi);
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modem->setGetStatsCallback(onGetStats);
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modem->begin();
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}
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void loop() {
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modem->loop();
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uint8_t packet[KISS_MAX_PACKET_SIZE];
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uint16_t len;
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// Match Dispatcher order: noise floor calib + loop() first, so we never sample RSSI in the same
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// iteration as startReceive() (AGC reset -> recvRaw below). Sampling right after startReceive()
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// can yield settling/cold RSSI and drive the floor toward -120.
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if ((uint32_t)(millis() - next_noise_floor_calib_ms) >= NOISE_FLOOR_CALIB_INTERVAL_MS) {
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radio_driver.triggerNoiseFloorCalibrate(0); // 0 = no interference threshold (KISS has no prefs)
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next_noise_floor_calib_ms = millis();
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}
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radio_driver.loop();
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if (modem->getPacketToSend(packet, &len)) {
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radio_driver.startSendRaw(packet, len);
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while (!radio_driver.isSendComplete()) {
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delay(1);
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}
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radio_driver.onSendFinished();
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modem->onTxComplete(true);
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}
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if ((uint32_t)(millis() - next_agc_reset_ms) >= AGC_RESET_INTERVAL_MS) {
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radio_driver.resetAGC(); // next recvRaw() will startReceive() and reset AGC so RSSI/noise floor don't stick at -120
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next_agc_reset_ms = millis();
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}
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uint8_t rx_buf[256];
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int rx_len = radio_driver.recvRaw(rx_buf, sizeof(rx_buf));
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if (rx_len > 0) {
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int8_t snr = (int8_t)(radio_driver.getLastSNR() * 4);
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int8_t rssi = (int8_t)radio_driver.getLastRSSI();
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modem->onPacketReceived(snr, rssi, rx_buf, rx_len);
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}
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}
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