창연공 LED 코드

[CSH2315]

#define PIN_LED 13
unsigned int count, toggle;

void setup() {
pinMode(PIN_LED, OUTPUT);
Serial.begin(115200); // Initialize serial port
while (!Serial) {
; // wait for serial port to connect.
}
Serial.println("Hello World!");
count = toggle = 0;
digitalWrite(PIN_LED, toggle); // turn off LED.
}

void loop() {
Serial.println(++count);
toggle = toggle_state(toggle); //toggle LED value.
digitalWrite(PIN_LED, toggle); // update LED status.
delay(1000); // wait for 1000 milliseconds
}

int toggle_state(int toggle) {
return toggle;
}