MeshCoreTel-firmware/variants/thinknode_m3/ThinkNodeM3Board.cpp

#include <Arduino.h>
#include "ThinkNodeM3Board.h"
#include <Wire.h>

#include <bluefruit.h>

void ThinkNodeM3Board::begin() {
  NRF52Board::begin();
  btn_prev_state = HIGH;

  Wire.begin();

  delay(10);   // give sx1262 some time to power up
}

uint16_t ThinkNodeM3Board::getBattMilliVolts() {
  int adcvalue = 0;

  analogReference(AR_INTERNAL_2_4);
  analogReadResolution(ADC_RESOLUTION);
  delay(10);

  // ADC range is 0..2400mV and resolution is 12-bit (0..4095)
  adcvalue = analogRead(PIN_VBAT_READ);
  // Convert the raw value to compensated mv, taking the resistor-
  // divider into account (providing the actual LIPO voltage)
  return (uint16_t)((float)adcvalue * ADC_FACTOR);
}