#define UP 4
#define PR 5
#define DN 6
#define RH 19
#define HD 20
#define LF 21

unsigned long debounceDelay = 10; // Adjust the debounce delay as needed

int up_rd, pr_rd, dn_rd, rh_rd, hd_rd, lf_rd;
unsigned long lastDebounceTime_UP = 0;
unsigned long lastDebounceTime_PR = 0;
unsigned long lastDebounceTime_DN = 0;
unsigned long lastDebounceTime_RH = 0;
unsigned long lastDebounceTime_HD = 0;
unsigned long lastDebounceTime_LF = 0;
int buttonState_UP = LOW;
int buttonState_PR = LOW;
int buttonState_DN = LOW;
int buttonState_RH = LOW;
int buttonState_HD = LOW;
int buttonState_LF = LOW;


void setup_buttons() {
  pinMode(UP, INPUT);
  pinMode(PR, INPUT);
  pinMode(DN, INPUT);
  pinMode(RH, INPUT);
  pinMode(HD, INPUT);
  pinMode(LF, INPUT);
}

int debounceButton(int buttonPin, int &lastButtonState, unsigned long &lastDebounceTime, int &buttonState) {
  int reading = digitalRead(buttonPin);
  //Serial.print(reading);

  if (reading != lastButtonState) {
    lastDebounceTime = millis();
  }

  if ((millis() - lastDebounceTime) > debounceDelay) {
    if (reading != buttonState) {
      buttonState = reading;
      return buttonState;
    }
  }
  lastButtonState = reading;
  return buttonState;
}

void buttons_read() {
  up_rd = debounceButton(UP, buttonState_UP, lastDebounceTime_UP, buttonState_UP);
  pr_rd = debounceButton(PR, buttonState_PR, lastDebounceTime_PR, buttonState_PR);
  dn_rd = debounceButton(DN, buttonState_DN, lastDebounceTime_DN, buttonState_DN);
  rh_rd = debounceButton(RH, buttonState_RH, lastDebounceTime_RH, buttonState_RH);
  hd_rd = debounceButton(HD, buttonState_HD, lastDebounceTime_HD, buttonState_HD);
  lf_rd = debounceButton(LF, buttonState_LF, lastDebounceTime_LF, buttonState_LF);
}