#include <ESP32Servo.h>
#define button1 12
#define button2 14
#define Led_Pin 2

const int servo_1_Pin = 18;
bool left=0;
bool right=0;

Servo servo;

int slow_speed_vertical=90;
portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED;

void IRAM_ATTR turnServoLeft() {
  //write here code to change LOW->HIGH and HIGH->LOW
  left=1;
  //slow_speed_vertical=slow_speed_vertical-10;
}

void IRAM_ATTR turnServoRight() {
  //write here code to change LOW->HIGH and HIGH->LOW
  right=1;
  //slow_speed_vertical=slow_speed_vertical+10;
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(button1, INPUT_PULLUP);
  pinMode(button2, INPUT_PULLUP);
  pinMode(Led_Pin, OUTPUT);
  attachInterrupt(digitalPinToInterrupt(button1), turnServoLeft, FALLING);
  attachInterrupt(digitalPinToInterrupt(button2), turnServoRight, FALLING);

  servo.attach(servo_1_Pin);
}

void loop() { 
  Serial.println(slow_speed_vertical);
  if (left==1&&slow_speed_vertical>0)
  {
    slow_speed_vertical=slow_speed_vertical-10;
    left=0;
  }

  if (right==1&&slow_speed_vertical<180&&slow_speed_vertical>=0)
  {

    slow_speed_vertical=slow_speed_vertical+10;
    right=0;
  }
  if (slow_speed_vertical==180||slow_speed_vertical==0) {
    digitalWrite(Led_Pin, HIGH);
  }
  else {
    digitalWrite(Led_Pin, LOW);
  }
  portENTER_CRITICAL(&mux);
  servo.write(slow_speed_vertical);
  delay(500);
  portEXIT_CRITICAL(&mux); 
}