Add MeshCore relay_radio firmware for Heltec T114

variants/thinknode_m3/ThinkNodeM3Board.h

@@ -0,0 +1,54 @@
+#pragma once
+
+#include <Arduino.h>
+#include <MeshCore.h>
+#include <helpers/NRF52Board.h>
+
+#define ADC_FACTOR ((1000.0*ADC_MULTIPLIER*AREF_VOLTAGE)/ADC_MAX)
+
+class ThinkNodeM3Board : public NRF52BoardDCDC {
+protected:
+#if NRF52_POWER_MANAGEMENT
+  void initiateShutdown(uint8_t reason) override;
+#endif
+  uint8_t btn_prev_state;
+
+public:
+  ThinkNodeM3Board() : NRF52Board("THINKNODE_M3_OTA") {}
+  void begin();
+  uint16_t getBattMilliVolts() override;
+
+#if defined(P_LORA_TX_LED)
+  void onBeforeTransmit() override {
+    digitalWrite(P_LORA_TX_LED, HIGH);   // turn TX LED on
+  }
+  void onAfterTransmit() override {
+    digitalWrite(P_LORA_TX_LED, LOW);   // turn TX LED off
+  }
+#endif
+
+  const char* getManufacturerName() const override {
+    return "Elecrow ThinkNode M3";
+  }
+
+  int buttonStateChanged() {
+  #ifdef BUTTON_PIN
+    uint8_t v = digitalRead(BUTTON_PIN);
+    if (v != btn_prev_state) {
+      btn_prev_state = v;
+      return (v == LOW) ? 1 : -1;
+    }
+  #endif
+    return 0;
+  }
+
+  void powerOff() override {
+    // turn off all leds, sd_power_system_off will not do this for us
+    #ifdef P_LORA_TX_LED
+    digitalWrite(P_LORA_TX_LED, LOW);
+    #endif
+
+    // power off board
+    sd_power_system_off();
+  }
+};