Created
April 14, 2013 12:54
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xbee control of led on arduino uno
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const int ledPin = 13; // the pin that the LED is attached to | |
int incomingByte; // a variable to read incoming serial data into | |
void setup() { | |
// initialize serial communication: | |
Serial.begin(9600); | |
// initialize the LED pin as an output: | |
pinMode(ledPin, OUTPUT); | |
} | |
void loop() { | |
// see if there's incoming serial data: | |
if (Serial.available() > 0) { | |
// read the oldest byte in the serial buffer: | |
incomingByte = Serial.read(); | |
// if it's a capital H (ASCII 72), turn on the LED: | |
if (incomingByte == 'H') { | |
Serial.print("ON"); | |
digitalWrite(ledPin, HIGH); | |
} | |
// if it's an L (ASCII 76) turn off the LED: | |
if (incomingByte == 'L') { | |
Serial.print("OFF"); | |
digitalWrite(ledPin, LOW); | |
} | |
} | |
} |
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