general class to simplify the syntax to write to a pin

blink.cpp

class PinOut {
  public:
    PinOut(uint8_t pin): m_pin(pin) {
      pinMode(pin, OUTPUT);
    }

    PinOut& operator= (uint8_t state) {
      digitalWrite(m_pin, state ? HIGH : LOW);
      return *this;
    }

  private:
    uint8_t m_pin;
};

// example usage: create a "led" object, which uses the pin number LED_BUILTIN
PinOut led(LED_BUILTIN);

void setup() {}

// much easier to read "blinking" example
void loop() {
  led = 1;
  delay(1000);
  led = 0;
  delay(1000);
}