Thursday, March 21, 2013

Read byte from Serial port and set pin

This code run on Arduino Due, read byte from Serial port, and set LED pin HIGH/LOW according.

int led = 13;
int incomingByte = 0;

void setup() {
    pinMode(led, OUTPUT);
    //Setup Serial Port with baud rate of 115200
    Serial.println("Press H to turn LED ON");
    Serial.println("Press L to turn LED OFF");

void loop() {
    if (Serial.available() > 0) {
        // read the incoming byte:
        incomingByte =;
        if(incomingByte == 'H'){
            digitalWrite(led, HIGH);
            Serial.println("LED ON");
        }else if(incomingByte == 'L'){
            digitalWrite(led, LOW);
            Serial.println("LED OFF");

No comments:

Post a Comment