Tlačítka

//IO
#define BTN1 2
#define BTN2 3

bool presentButton1, presentButton2; //actual state of buttons and inputs
bool lastButton1, lastButton2; //last state button s
bool edgeButton1, edgeButton1; //edge state buttons

bool LEDstatus;

void setup() {

  //IO
  //there is internal pull-up used - read variables are negated
  pinMode(BTN1, INPUT_PULLUP);
  pinMode(BTN2, INPUT_PULLUP);

  pinMode(LED_BUILTIN, OUTPUT);

}

void loop() {
  //store input to variarbe (and nagete because pullups are used)
  presentButton1 = !digitalRead(BTN1);
  presentButton2 = !digitalRead(BTN2);


  //edge detection
  edgeButton1 = (presentButton1 ^ lastButton1) & !presentButton1;
  edgeButton2 = (presentButton2 ^ lastButton2) & !presentButton2;


    if (edgeButton1 && LEDstatus == 0) {
    digitalWrite(LED_BUILTIN, HIGH);
    LEDstatus = 1;
    }
    if (edgeButton2 && LEDstatus == 0) {
    digitalWrite(LED_BUILTIN, HIGH);
    LEDstatus = 1;
    }
    if (LEDstatus == 1) {
    delay(2000);
    digitalWrite(LED_BUILTIN, LOW);
    LEDstatus = 0;

    }

  lastButton1 = presentButton1; //save current state to last state
  lastButton2 = presentButton2; //save current state to last state


}