MeshCoreTel-firmware/variants/heltec_tracker/target.cpp

#include <Arduino.h>
#include "target.h"

#include <helpers/sensors/MicroNMEALocationProvider.h>

HeltecV3Board board;

#if defined(P_LORA_SCLK)
  static SPIClass spi;
  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, spi);
#else
  RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
#endif

WRAPPER_CLASS radio_driver(radio, board);

ESP32RTCClock fallback_clock;
AutoDiscoverRTCClock rtc_clock(fallback_clock);
// GPS_EN (GPIO35) drives N-ch MOSFET → P-ch high-side switch; GPS_RESET (GPIO36) active LOW
MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock, GPS_RESET, GPS_EN, &board.periph_power);
HWTSensorManager sensors = HWTSensorManager(nmea);

#ifdef DISPLAY_CLASS
  DISPLAY_CLASS display(&board.periph_power);   // peripheral power pin is shared
  MomentaryButton user_btn(PIN_USER_BTN, 1000, true);
#endif

bool radio_init() {
  fallback_clock.begin();
  rtc_clock.begin(Wire);
  
#if defined(P_LORA_SCLK)
  return radio.std_init(&spi);
#else
  return radio.std_init();
#endif

}

uint32_t radio_get_rng_seed() {
  return radio.random(0x7FFFFFFF);
}

void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr) {
  radio.setFrequency(freq);
  radio.setSpreadingFactor(sf);
  radio.setBandwidth(bw);
  radio.setCodingRate(cr);
}

void radio_set_tx_power(int8_t dbm) {
  radio.setOutputPower(dbm);
}

mesh::LocalIdentity radio_new_identity() {
  RadioNoiseListener rng(radio);
  return mesh::LocalIdentity(&rng);  // create new random identity
}

void HWTSensorManager::start_gps() {
  if (!gps_active) {
    _location->begin();  // Claims periph_power via RefCountedDigitalPin
    gps_active = true;
    Serial1.println("$CFGSYS,h35155*68");  // Configure GPS for all constellations
  }
}

void HWTSensorManager::stop_gps() {
  if (gps_active) {
    gps_active = false;
    _location->stop();  // Releases periph_power via RefCountedDigitalPin
  }
}

bool HWTSensorManager::begin() {
  // init GPS port
  Serial1.begin(115200, SERIAL_8N1, PIN_GPS_RX, PIN_GPS_TX);
  return true;
}

bool HWTSensorManager::querySensors(uint8_t requester_permissions, CayenneLPP& telemetry) {
  if (requester_permissions & TELEM_PERM_LOCATION) {   // does requester have permission?
    telemetry.addGPS(TELEM_CHANNEL_SELF, node_lat, node_lon, node_altitude);
  }
  return true;
}

void HWTSensorManager::loop() {
  static long next_gps_update = 0;

  _location->loop();

  if (millis() > next_gps_update) {
    if (gps_active && _location->isValid()) {
      node_lat = ((double)_location->getLatitude())/1000000.;
      node_lon = ((double)_location->getLongitude())/1000000.;
      node_altitude = ((double)_location->getAltitude()) / 1000.0;
      MESH_DEBUG_PRINTLN("lat %f lon %f", node_lat, node_lon);
    }
    next_gps_update = millis() + 1000;
  }
}

int HWTSensorManager::getNumSettings() const { return 1; }  // just one supported: "gps" (power switch)

const char* HWTSensorManager::getSettingName(int i) const {
  return i == 0 ? "gps" : NULL;
}
const char* HWTSensorManager::getSettingValue(int i) const {
  if (i == 0) {
    return gps_active ? "1" : "0";
  }
  return NULL;
}
bool HWTSensorManager::setSettingValue(const char* name, const char* value) {
  if (strcmp(name, "gps") == 0) {
    if (strcmp(value, "0") == 0) {
      stop_gps();
    } else {
      start_gps();
    }
    return true;
  }
  return false;  // not supported
}