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/heltec_ct62/HT-CT62Board.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include <MeshCore.h>
+#include <Arduino.h>
+
+#if defined(ESP_PLATFORM)
+
+#include <helpers/ESP32Board.h>
+
+class Heltec_CT62_Board : public ESP32Board {
+  uint32_t gpio_state = 0;
+
+public:
+  void begin() {
+    ESP32Board::begin();
+#if defined(PIN_BOARD_RELAY_CH1) && defined(PIN_BOARD_RELAY_CH2) 
+    pinMode(PIN_BOARD_RELAY_CH1, OUTPUT);
+    pinMode(PIN_BOARD_RELAY_CH2, OUTPUT);
+#endif
+#if defined(PIN_BOARD_DIGITAL_IN)
+    pinMode(PIN_BOARD_DIGITAL_IN, INPUT);
+#endif
+  }
+  uint32_t getGpio() override {
+#if defined(PIN_BOARD_DIGITAL_IN)
+    return gpio_state | (digitalRead(PIN_BOARD_DIGITAL_IN) ? 1 : 0);
+#else
+    return 0;
+#endif
+  }
+  void setGpio(uint32_t values) override {
+#if defined(PIN_BOARD_RELAY_CH1) && defined(PIN_BOARD_RELAY_CH2) 
+    gpio_state = values;
+    digitalWrite(PIN_BOARD_RELAY_CH1, values & 2);
+    digitalWrite(PIN_BOARD_RELAY_CH2, values & 4);
+#endif
+  }
+
+  uint16_t getBattMilliVolts() override {
+  #ifdef PIN_VBAT_READ
+    analogReadResolution(12);         // ESP32-C3 ADC is 12-bit - 3.3/4096 (ref voltage/max counts)
+    uint32_t raw = 0;
+    for (int i = 0; i < 8; i++) {
+      raw += analogRead(PIN_VBAT_READ);
+    }
+    raw = raw / 8;
+
+    return ((6.52 * raw) / 1024.0) * 1000;
+  #else
+    return 0;  // not supported
+  #endif
+  }
+
+  const char* getManufacturerName() const override {
+    return "Heltec CT62";
+  }
+};
+
+#endif

variants/heltec_ct62/platformio.ini

@@ -0,0 +1,152 @@
+[Heltec_ct62]
+extends = esp32_base
+board = esp32-c3-devkitm-1
+build_flags =
+  ${esp32_base.build_flags}
+  -I variants/heltec_ct62
+  -D HELTEC_HT_CT62=1
+  -D USE_SX1262
+  -D RADIO_CLASS=CustomSX1262
+  -D WRAPPER_CLASS=CustomSX1262Wrapper
+  -D ESP32_CPU_FREQ=80
+  -D LORA_TX_POWER=22
+  -D P_LORA_TX_LED=18
+  -D PIN_BOARD_SDA=0
+  -D PIN_BOARD_SCL=1
+  ;-D PIN_USER_BTN=9
+  -D PIN_VBAT_READ=2
+  -D P_LORA_DIO_1=3
+  -D P_LORA_NSS=8
+  -D P_LORA_RESET=5
+  -D P_LORA_DIO_0=RADIOLIB_NC
+  -D P_LORA_DIO_2=RADIOLIB_NC
+  -D P_LORA_BUSY=4
+  -D P_LORA_SCLK=10
+  -D P_LORA_MISO=6
+  -D P_LORA_MOSI=7
+  -D SX126X_DIO2_AS_RF_SWITCH=true
+  -D SX126X_DIO3_TCXO_VOLTAGE=1.8
+  -D SX126X_CURRENT_LIMIT=140
+  -D SX126X_RX_BOOSTED_GAIN=1
+build_src_filter = ${esp32_base.build_src_filter}
+  +<../variants/heltec_ct62>
+
+[env:Heltec_ct62_repeater]
+extends = Heltec_ct62
+build_flags =
+  ${Heltec_ct62.build_flags}
+  ;-D ARDUINO_USB_MODE=1
+  ;-D ARDUINO_USB_CDC_ON_BOOT=1
+  -D ADVERT_NAME='"HT-CT62 Repeater"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_ct62.build_src_filter}
+  +<../examples/simple_repeater>
+lib_deps =
+  ${Heltec_ct62.lib_deps}
+  ${esp32_ota.lib_deps}
+
+; [env:Heltec_ct62_repeater_bridge_rs232]
+; extends = Heltec_ct62
+; build_flags =
+;   ${Heltec_ct62.build_flags}
+;   -D ADVERT_NAME='"RS232 Bridge"'
+;   -D ADVERT_LAT=0.0
+;   -D ADVERT_LON=0.0
+;   -D ADMIN_PASSWORD='"password"'
+;   -D MAX_NEIGHBOURS=50
+;   -D WITH_RS232_BRIDGE=Serial2
+;   -D WITH_RS232_BRIDGE_RX=5
+;   -D WITH_RS232_BRIDGE_TX=6
+;  -D BRIDGE_DEBUG=1
+; ;  -D MESH_PACKET_LOGGING=1
+; ;  -D MESH_DEBUG=1
+; build_src_filter = ${Heltec_ct62.build_src_filter}
+;   +<helpers/bridges/RS232Bridge.cpp>
+;   +<../examples/simple_repeater>
+; lib_deps =
+;   ${Heltec_ct62.lib_deps}
+;   ${esp32_ota.lib_deps}
+
+[env:Heltec_ct62_repeater_bridge_espnow]
+extends = Heltec_ct62
+build_flags =
+  ${Heltec_ct62.build_flags}
+  -D ADVERT_NAME='"ESPNow Bridge"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D MAX_NEIGHBOURS=50
+  -D WITH_ESPNOW_BRIDGE=1
+;  -D BRIDGE_DEBUG=1
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_ct62.build_src_filter}
+  +<helpers/bridges/ESPNowBridge.cpp>
+  +<../examples/simple_repeater>
+lib_deps =
+  ${Heltec_ct62.lib_deps}
+  ${esp32_ota.lib_deps}
+
+[env:Heltec_ct62_companion_radio_usb]
+extends = Heltec_ct62
+build_flags =
+  ${Heltec_ct62.build_flags}
+;  -D ARDUINO_USB_MODE=1
+;  -D ARDUINO_USB_CDC_ON_BOOT=1
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D OFFLINE_QUEUE_SIZE=256
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_ct62.build_src_filter}
+  +<../examples/companion_radio/*.cpp>
+lib_deps =
+  ${Heltec_ct62.lib_deps}
+  ${esp32_ota.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Heltec_ct62_companion_radio_ble]
+extends = Heltec_ct62
+build_flags =
+  ${Heltec_ct62.build_flags}
+;  -D ARDUINO_USB_MODE=1
+;  -D ARDUINO_USB_CDC_ON_BOOT=1
+  -D MAX_CONTACTS=350
+  -D MAX_GROUP_CHANNELS=40
+  -D OFFLINE_QUEUE_SIZE=256
+  -D BLE_PIN_CODE=123456
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_ct62.build_src_filter}
+  +<../examples/companion_radio/*.cpp>
+  +<helpers/esp32/SerialBLEInterface.cpp>
+lib_deps =
+  ${Heltec_ct62.lib_deps}
+  ${esp32_ota.lib_deps}
+  densaugeo/base64 @ ~1.4.0
+
+[env:Heltec_ct62_sensor]
+extends = Heltec_ct62
+build_flags =
+  ${Heltec_ct62.build_flags}
+  -D ADVERT_NAME='"HT-CT62 Sensor"'
+  -D ADVERT_LAT=0.0
+  -D ADVERT_LON=0.0
+  -D ADMIN_PASSWORD='"password"'
+  -D PIN_BOARD_SDA=-1
+  -D PIN_BOARD_SCL=-1
+  -D PIN_BOARD_RELAY_CH1=0
+  -D PIN_BOARD_RELAY_CH2=1
+  -D PIN_BOARD_DIGITAL_IN=19
+;  -D MESH_PACKET_LOGGING=1
+;  -D MESH_DEBUG=1
+build_src_filter = ${Heltec_ct62.build_src_filter}
+  +<../examples/simple_sensor>
+lib_deps =
+  ${Heltec_ct62.lib_deps}
+  ${esp32_ota.lib_deps}

variants/heltec_ct62/target.cpp

@@ -0,0 +1,37 @@
+#include <Arduino.h>
+#include "target.h"
+
+Heltec_CT62_Board board;
+
+RADIO_CLASS radio = new Module(P_LORA_NSS, P_LORA_DIO_1, P_LORA_RESET, P_LORA_BUSY);
+WRAPPER_CLASS radio_driver(radio, board);
+
+ESP32RTCClock fallback_clock;
+AutoDiscoverRTCClock rtc_clock(fallback_clock);
+SensorManager sensors;
+
+bool radio_init() {
+  fallback_clock.begin();
+  rtc_clock.begin(Wire);  
+  return radio.std_init(&SPI);
+}
+
+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
+}

variants/heltec_ct62/target.h

@@ -0,0 +1,20 @@
+#pragma once
+
+#define RADIOLIB_STATIC_ONLY 1
+#include <RadioLib.h>
+#include <helpers/radiolib/RadioLibWrappers.h>
+#include "HT-CT62Board.h"
+#include <helpers/radiolib/CustomSX1262Wrapper.h>
+#include <helpers/AutoDiscoverRTCClock.h>
+#include <helpers/SensorManager.h>
+
+extern Heltec_CT62_Board board;
+extern WRAPPER_CLASS radio_driver;
+extern AutoDiscoverRTCClock rtc_clock;
+extern SensorManager sensors;
+
+bool radio_init();
+uint32_t radio_get_rng_seed();
+void radio_set_params(float freq, float bw, uint8_t sf, uint8_t cr);
+void radio_set_tx_power(int8_t dbm);
+mesh::LocalIdentity radio_new_identity();