BoneScript
You might be able to see a newer version of this on beagleboard.org/support/bonescript/demo_blinkled_external
Demo: Blink an external LED
Code
var b = require('bonescript'); var led = "P8_13"; var state = 0; b.pinMode(led, 'out'); toggleLED = function() { state = state ? 0 : 1; b.digitalWrite(led, state); }; timer = setInterval(toggleLED, 100); stopTimer = function() { clearInterval(timer); }; setTimeout(stopTimer, 30000);
Build and execute instructions

- Connect an LED and resistor as shown being sure to get the anode/cathode orientation correct.
- Run the example code and observe the blinking.
- Alter the frequency and re-run the example.