#include <ezButton.h>
#define numOfStage 5

ezButton trigButton(8);  
ezButton setButton(7);

bool isRunMode = false;
int stage = 0;

void setup() {
  Serial.begin(9600);
  pinMode(13, OUTPUT);
  trigButton.setDebounceTime(50); // set debounce time to 50 milliseconds
  setButton.setDebounceTime(50);
}

void loop() {
  trigButton.loop(); 
  if (trigButton.isPressed()) isRunMode = !isRunMode;
  setting(isRunMode);

delay(5);
}

void setting(bool run) {
  if (run) 
  {  
     digitalWrite(13, HIGH);
     setButton.loop();
     if (setButton.isPressed()) stage++;
     if (stage > numOfStage - 1) {
       stage = 0;
       isRunMode = false;
       Serial.println("end");
     }
  }
  else 
  {
    digitalWrite(13, LOW);
  }
}