HaloKeymind/variants/thinknode_m6/ThinkNodeM6Board.h

#pragma once

#include <Arduino.h>
#include <MeshCore.h>
#include <helpers/NRF52Board.h>

// built-ins
#define VBAT_MV_PER_LSB   (0.73242188F)   // 3.0V ADC range and 12-bit ADC resolution = 3000mV/4096

#define VBAT_DIVIDER_COMP ADC_MULTIPLIER          // Compensation factor for the VBAT divider

#define PIN_VBAT_READ     BATTERY_PIN
#define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)

class ThinkNodeM6Board : public NRF52BoardDCDC {
protected:
#if NRF52_POWER_MANAGEMENT
  void initiateShutdown(uint8_t reason) override;
#endif

public:
  ThinkNodeM6Board() : NRF52Board("THINKNODE_M6_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 M6";
  }

  bool hasUsbPowerDetect() const override { return true; }

  bool isUsbPowered() override {
    // P0.13 is the dedicated USB / external power-detect line on the M6 PCB
    // (same pin the Meshtastic M6 variant uses for USB detection).
    return digitalRead(EXT_PWR_DETECT) == EXT_PWR_DETECT_VALUE;
  }

  bool hasSolarChargerDetect() const override { return true; }

  bool isSolarChargerActive() override {
    // P0.15 is the active-low solar-charger status line. It reports the
    // charger's state, not photovoltaic voltage or current.
    return digitalRead(EXT_CHRG_DETECT) == EXT_CHRG_DETECT_VALUE;
  }

  bool isExternalPowered() override {
    if (isUsbPowered() || isSolarChargerActive()) {
      return true;
    }
    return NRF52Board::isExternalPowered();
  }

  bool isChargerActive() override {
    // Preserve a generic charging indication while also exposing both
    // source-specific states (USB / solar) separately through the CLI.
    return isSolarChargerActive() || isUsbPowered();
  }

  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
    NRF52Board::powerOff();
  }
};