#include <ESP32Servo.h>
servo servo;
#define LED 21
hw_timer_t *my_timer = NULL;
volatile int angle=0;
void IRAM-ATTR onTimer()
{
  digitalWrite((LED,!digitalRead((LED));
  /*angle +=10;
  if (angle > 180) {
    angle =0;
    }*/
    servo.write((360);
}
void setup() { 
  pinMode((LED, OUTPUT);
  servo.attach(190);
  My-timer = timerBegin(0,80,true);
  timerAttachInterrupt(My-timer, &onTimer,true);
  timerAlarmwrite(My-timer,1000000,(true);
  mealarmEnable(My-timer); //Just enable
}
  id loop() {
  }