const int buttonPin = 25; //esp32 connected to buttons pin
const int LEDPin = 26; //esp32 pin connected to leds pin

// variables will change

int ledState = LOW;   // the current state of the led
int lastButtonState;  // the previous state of the button
int currentButtonState; // the current  state of button


void setup(){
  Serial.begin(9600);    //initialize serial

pinMode(buttonPin, INPUT_PULLUP); //set esp32 pin to input pull-up mode
pinMode(LEDPin, OUTPUT);         // set esp32 pin to output mode
currentButtonState = digitalRead(buttonPin); 
}

void loop(){

  lastButtonState = currentButtonState;  //save the last state
  currentButtonState = digitalRead(buttonPin); //Read new state

  if(lastButtonState == HIGH &&  currentButtonState == LOW){
    Serial.println("The button is pressed");

    // toggle state of LED
     ledState = !ledState;
     //controll led according to the toggle state
     digitalWrite(LEDPin, ledState);
  }
  delay(100);
}
esp:0
esp:2
esp:4
esp:5
esp:12
esp:13
esp:14
esp:15
esp:16
esp:17
esp:18
esp:19
esp:21
esp:22
esp:23
esp:25
esp:26
esp:27
esp:32
esp:33
esp:34
esp:35
esp:3V3
esp:EN
esp:VP
esp:VN
esp:GND.1
esp:D2
esp:D3
esp:CMD
esp:5V
esp:GND.2
esp:TX
esp:RX
esp:GND.3
esp:D1
esp:D0
esp:CLK
led1:A
led1:C
btn1:1.l
btn1:2.l
btn1:1.r
btn1:2.r
r1:1
r1:2