#include "waitfor.h"

#define plusButtonPin 5
#define minusButtonPin 17

uint8_t counter;

void setup() {
  Serial.begin(115200);
  pinMode(plusButtonPin, INPUT_PULLUP);
  pinMode(minusButtonPin, INPUT_PULLUP);
  counter = 0;
  Serial.println("ESP32 button debounce test");
}

void loop() {

  static boolean plusButtonPreviousState = false;
  static boolean plusButtonCurrentState = false;

  plusButtonCurrentState = digitalRead((plusButtonPin));
  if((plusButtonCurrentState == true) && (plusButtonPreviousState == false)){
    waitfor(20);
    plusButtonCurrentState = digitalRead(plusButtonPin);
    if(plusButtonCurrentState == true){
      counter++;
      Serial.print("p:");Serial.println(counter);
    }
  }
  plusButtonPreviousState = plusButtonCurrentState;

    static boolean minusButtonPreviousState = false;
  static boolean minusButtonCurrentState = false;
  minusButtonCurrentState = digitalRead((minusButtonPin));
  if((minusButtonCurrentState == true) && (minusButtonPreviousState == false)){
    waitfor(20);
    minusButtonCurrentState = digitalRead(minusButtonPin);
    if(minusButtonCurrentState == true){
      counter--;
      Serial.print("m:");Serial.println(counter);
    }
  }
  minusButtonPreviousState = minusButtonCurrentState;

}