1  #pragma once
 2  #include <BatteryMonitor.h>
 3  
 4  #define BAT_GPIO0 0  // Battery voltage
 5  
 6  inline BatteryMonitor& getBatteryMonitor() {
 7    static BatteryMonitor instance(BAT_GPIO0);
 8    return instance;
 9  }
10  
11  #define batteryMonitor getBatteryMonitor()