LEDクラスを作る

#include <Arduino.h>

class LED {
public:
    LED(int pin)
        : pin(pin), state(false) {
    }

    void begin() {
        pinMode(pin, OUTPUT);
        off();
    }

    void on() {
        state = true;
        digitalWrite(pin, HIGH);
    }

    void off() {
        state = false;
        digitalWrite(pin, LOW);
    }

    void toggle() {
        if (state) {
            off();
        } else {
            on();
        }
    }

private:
    int pin;
    bool state;
};

LED led1(LED_BUILTIN);
LED led2(23);

void setup() {
    led1.begin();
    led2.begin();
}

void loop() {
    led1.toggle();
    delay(500);

    led2.toggle();
    delay(500);
}