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30 lines
518 B
30 lines
518 B
const unsigned int LED_PIN = 13;
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const unsigned int BAUD_RATE = 9600;
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void setup() {
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pinMode(LED_PIN, OUTPUT);
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Serial.begin(BAUD_RATE);
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}
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void loop() {
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if (Serial.available() <= 0) {
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return;
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}
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int command = Serial.read();
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switch (command) {
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case '1':
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digitalWrite(LED_PIN, HIGH);
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Serial.println("LED on");
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break;
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case '2':
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digitalWrite(LED_PIN, LOW);
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Serial.println("LED off");
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break;
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default:
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Serial.print("Unknown command: ");
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Serial.println(command);
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}
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}
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