#define NUMELEMENTS(x) (sizeof(x) / sizeof(x[0]))
#define ISPRESSED LOW

uint8_t pinsTL[] = {6, 7, 8};
uint8_t pinsPL[] = {9, 10, 10};
uint8_t pinsBtn[] = {2, 4};

void setup() {
  Serial.begin(115200);
  Serial.println(F("Test"));
  for (uint8_t cnt = 0; cnt < NUMELEMENTS(pinsTL); cnt++)
  {
    pinMode(pinsTL[cnt], OUTPUT);
    digitalWrite(pinsTL[cnt], HIGH);
  }

  for (uint8_t cnt = 0; cnt < NUMELEMENTS(pinsPL); cnt++)
  {
    pinMode(pinsPL[cnt], OUTPUT);
    digitalWrite(pinsPL[cnt], HIGH);
  }

  for (uint8_t cnt = 0; cnt < NUMELEMENTS(pinsBtn); cnt++)
  {
    pinMode(pinsBtn[cnt], INPUT_PULLUP);
  }
}



void loop() {

  for (uint8_t cnt = 0; cnt < NUMELEMENTS(pinsBtn); cnt++)
  {
    if(digitalRead(pinsBtn[cnt]) == ISPRESSED)
    {
      Serial.print(cnt);
      Serial.println(F(" Button is pressed"));
    }
  }

}