Userspace Arduino:BlinkUserspace

Introduction
This is the most basic example for the Userspace Arduino library involving blinking an LED from a sketch. For the Beaglebone Black, the current variant has a setup as shown in the diagram. 

Hardware
You need:


 * LED: any color and size. 10mm works fine
 * Resistor: > 470Ω to avoid exceeding the current limit of 4 mA per pin
 * Wire to join the stuff

Wire the LED with the positive (longer) end to P8_19 and the other end to GND.

Sketch
Derived from Blink

/* Blink Turns on an LED on for one second, then off for one second, repeatedly. This example code is in the public domain. */ // Pin 8_19 has an LED connected to it. It maps to 7 on the Beaglebone Black variant // give it a name: int led = 7;

// the setup routine runs once when you press reset: void setup { // initialize the digital pin as an output. pinMode(led, OUTPUT); }

// the loop routine runs over and over again forever: void loop { digitalWrite(led, HIGH);  // turn the LED on (HIGH is the voltage level) delay(1000);              // wait for a second digitalWrite(led, LOW);   // turn the LED off by making the voltage LOW delay(1000);              // wait for a second }