cool demo for stm32f4discovery/Espruino

Just got espruino running on a stm32f4discovery I ordered and received today... I'm a backer on kickstarter, but am beyond the "impatient developer" level...LOL!

Anyway, here's a cool little demo you can run on the the f4discovery board:

var i = 1000, run = true;
function flashLights() {
	LED4.write(false);
	LED1.write(true);
	setTimeout(function () {
		LED1.write(false);
		LED2.write(true);
		setTimeout(function () {
			LED2.write(false);
			LED3.write(true);
			setTimeout(function () {
				LED3.write(false);
				LED4.write(true);
				setTimeout(function () {
					if (run) {
						flashLights();
					}
				}, i);
			}, i);
		}, i);
	}, i);
}
flashLights();

After executing it runs each of the leds in a circle with the given wait time between each flash. In the console you can modify the i variable to alter the flash rate while it's running. Then to stop it just put run=false. Once you get below i=70 you can't even really tell which direction they're flashing in they're going so fast!

Cheers,
Austin