아두이노(arduino) - pc로 입력받아 LED를 조종하자!

소스1 -LED는 13에 연결 [도구-시리얼모니터]에서 1, 2, 3 을 입력해보세요 이외의 입력을 하면 나오는 부분은 어디일까요? 찾아보세요!-

const unsigned int LED_PIN = 13; 

const unsigned int BAUD_RATE = 9600; 

 

void setup() { 

 pinMode(LED_PIN, OUTPUT); 

 Serial.begin(BAUD_RATE); // <label id="code.welcome.init_serial"/> 

} 

 

void loop() { 

 if (Serial.available() > 0) { // <label id="code.welcome.available"/> 

 int command = Serial.read(); 

 if (command == '1') { 

 digitalWrite(LED_PIN, HIGH); 

 Serial.println("LED on"); 

 } else if (command == '2') { 

 digitalWrite(LED_PIN, LOW); 

 Serial.println("LED off"); 

 } else if (command == '3'){

 Serial.println("light"); 

 digitalWrite(LED_PIN, HIGH);

 delay(500);

 digitalWrite(LED_PIN, LOW);

 delay(500);

 digitalWrite(LED_PIN, HIGH);

 delay(500);

 digitalWrite(LED_PIN, LOW);

 delay(500);

 } else { 

 Serial.print("Unknown command: "); 

 Serial.println(command); // <label id="code.welcome.print_formats"/> 

 } 

 } 

}