Initial commit: Simple Sensor firmware for Heltec T114 with BME280

- MeshCore-based Simple Sensor firmware
- Heltec T114 without display
- BME280 sensor support (temp/humidity/pressure)
- Radio: 868.856018 MHz, SF7, BW62.5 kHz, CR4/7
- 2-byte path hash
- PlatformIO project

variants/t1000-e/target.cpp

@@ -0,0 +1,201 @@
+#include <Arduino.h>
+#include "t1000e_sensors.h"
+#include "target.h"
+#include <helpers/sensors/MicroNMEALocationProvider.h>
+
+T1000eBoard board;
+
+RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY, SPI);
+
+WRAPPER_CLASS radio_driver(radio, board);
+
+VolatileRTCClock rtc_clock;
+MicroNMEALocationProvider nmea = MicroNMEALocationProvider(Serial1, &rtc_clock);
+T1000SensorManager sensors = T1000SensorManager(nmea);
+
+#ifdef DISPLAY_CLASS
+  NullDisplayDriver display;
+#endif
+
+#ifndef LORA_CR
+  #define LORA_CR      5
+#endif
+
+#ifdef RF_SWITCH_TABLE
+static const uint32_t rfswitch_dios[Module::RFSWITCH_MAX_PINS] = {
+  RADIOLIB_LR11X0_DIO5,
+  RADIOLIB_LR11X0_DIO6,
+  RADIOLIB_LR11X0_DIO7,
+  RADIOLIB_LR11X0_DIO8, 
+  RADIOLIB_NC
+};
+
+static const Module::RfSwitchMode_t rfswitch_table[] = {
+  // mode                 DIO5  DIO6  DIO7  DIO8
+  { LR11x0::MODE_STBY,   {LOW,  LOW,  LOW,  LOW  }},  
+  { LR11x0::MODE_RX,     {HIGH, LOW,  LOW,  HIGH }},
+  { LR11x0::MODE_TX,     {HIGH, HIGH, LOW,  HIGH }},
+  { LR11x0::MODE_TX_HP,  {LOW,  HIGH, LOW,  HIGH }},
+  { LR11x0::MODE_TX_HF,  {LOW,  LOW,  LOW,  LOW  }}, 
+  { LR11x0::MODE_GNSS,   {LOW,  LOW,  HIGH, LOW  }},
+  { LR11x0::MODE_WIFI,   {LOW,  LOW,  LOW,  LOW  }},  
+  END_OF_MODE_TABLE,
+};
+#endif
+
+bool radio_init() {
+  //rtc_clock.begin(Wire);
+  
+#ifdef LR11X0_DIO3_TCXO_VOLTAGE
+  float tcxo = LR11X0_DIO3_TCXO_VOLTAGE;
+#else
+  float tcxo = 1.6f;
+#endif
+
+  SPI.setPins(P_LORA_MISO, P_LORA_SCLK, P_LORA_MOSI);
+  SPI.begin();
+  int status = radio.begin(LORA_FREQ, LORA_BW, LORA_SF, LORA_CR, RADIOLIB_LR11X0_LORA_SYNC_WORD_PRIVATE, LORA_TX_POWER, 16, tcxo);
+  if (status != RADIOLIB_ERR_NONE) {
+    Serial.print("ERROR: radio init failed: ");
+    Serial.println(status);
+    return false;  // fail
+  }
+  
+  radio.setCRC(2);
+  radio.explicitHeader();
+
+#ifdef RF_SWITCH_TABLE
+  radio.setRfSwitchTable(rfswitch_dios, rfswitch_table);
+#endif
+#ifdef RX_BOOSTED_GAIN
+  radio.setRxBoostedGainMode(RX_BOOSTED_GAIN);
+#endif
+
+  return true;  // success
+}
+
+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 T1000SensorManager::start_gps() {
+  gps_active = true;
+  //_nmea->begin();
+  // this init sequence should be better 
+  // comes from seeed examples and deals with all gps pins
+  pinMode(GPS_EN, OUTPUT);
+  digitalWrite(GPS_EN, HIGH);
+  delay(10);
+  pinMode(GPS_VRTC_EN, OUTPUT);
+  digitalWrite(GPS_VRTC_EN, HIGH);
+  delay(10);
+       
+  pinMode(GPS_RESET, OUTPUT);
+  digitalWrite(GPS_RESET, HIGH);
+  delay(10);
+  digitalWrite(GPS_RESET, LOW);
+       
+  pinMode(GPS_SLEEP_INT, OUTPUT);
+  digitalWrite(GPS_SLEEP_INT, HIGH);
+  pinMode(GPS_RTC_INT, OUTPUT);
+  digitalWrite(GPS_RTC_INT, LOW);
+  pinMode(GPS_RESETB, INPUT_PULLUP);
+}
+
+void T1000SensorManager::sleep_gps() {
+  gps_active = false;
+  digitalWrite(GPS_VRTC_EN, HIGH);
+  digitalWrite(GPS_EN, LOW);
+  digitalWrite(GPS_RESET, HIGH);
+  digitalWrite(GPS_SLEEP_INT, HIGH);
+  digitalWrite(GPS_RTC_INT, LOW);
+  pinMode(GPS_RESETB, OUTPUT);
+  digitalWrite(GPS_RESETB, LOW);
+  //_nmea->stop();
+}
+
+void T1000SensorManager::stop_gps() {
+  gps_active = false;
+  digitalWrite(GPS_VRTC_EN, LOW);
+  digitalWrite(GPS_EN, LOW);
+  digitalWrite(GPS_RESET, HIGH);
+  digitalWrite(GPS_SLEEP_INT, HIGH);
+  digitalWrite(GPS_RTC_INT, LOW);
+  pinMode(GPS_RESETB, OUTPUT);
+  digitalWrite(GPS_RESETB, LOW);
+  //_nmea->stop();
+}
+
+
+bool T1000SensorManager::begin() {
+  // init GPS
+  Serial1.begin(115200);
+  return true;
+}
+
+bool T1000SensorManager::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);
+  }
+  if (requester_permissions & TELEM_PERM_ENVIRONMENT) {
+    // Firmware reports light as a 0-100 % scale, but expose it via Luminosity so app labels it "Luminosity".
+    telemetry.addLuminosity(TELEM_CHANNEL_SELF, t1000e_get_light());
+    telemetry.addTemperature(TELEM_CHANNEL_SELF, t1000e_get_temperature());
+  }
+  return true;
+}
+
+void T1000SensorManager::loop() {
+  static long next_gps_update = 0;
+
+  _nmea->loop();
+
+  if (millis() > next_gps_update) {
+    if (gps_active && _nmea->isValid()) {
+      node_lat = ((double)_nmea->getLatitude())/1000000.;
+      node_lon = ((double)_nmea->getLongitude())/1000000.;
+      node_altitude = ((double)_nmea->getAltitude()) / 1000.0;
+      //Serial.printf("lat %f lon %f\r\n", _lat, _lon);
+    }
+    next_gps_update = millis() + 1000;
+  }
+}
+
+int T1000SensorManager::getNumSettings() const { return 1; }  // just one supported: "gps" (power switch)
+
+const char* T1000SensorManager::getSettingName(int i) const {
+  return i == 0 ? "gps" : NULL;
+}
+const char* T1000SensorManager::getSettingValue(int i) const {
+  if (i == 0) {
+    return gps_active ? "1" : "0";
+  }
+  return NULL;
+}
+bool T1000SensorManager::setSettingValue(const char* name, const char* value) {
+  if (strcmp(name, "gps") == 0) {
+    if (strcmp(value, "0") == 0) {
+      sleep_gps(); // sleep for faster fix !
+    } else {
+      start_gps();
+    }
+    return true;
+  }
+  return false;  // not supported
+}