bool flag1=0;
String SwitchingBatteryCharger(int mpptVoltage)
{ 
    if(mpptVoltage<=10500 and mpptVoltage!=-1)
    {
      Serial.println("battery SwitchingBatteryCharger on ");
      flag1=1;

    }
    else if(mpptVoltage>=12800)
    {
      Serial.println("battery SwitchingBatteryCharger off ");
      flag1=0;

    }
    
if(flag1){return"ON";}else{return "OFF";}

}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(36, INPUT);
  // Serial.println(SwitchingBatteryCharger(11000));
  // Serial.println(SwitchingBatteryCharger(12000));
  // Serial.println(SwitchingBatteryCharger(13000));
  // Serial.println(SwitchingBatteryCharger(10000));
  // Serial.println(SwitchingBatteryCharger(-1));




}

void loop() {
  int flag = analogRead(36);
  Serial.println(flag*4);
  Serial.println(SwitchingBatteryCharger(flag*4));
  // put your main code here, to run repeatedly:
  delay(1000); // this speeds up the simulation
}