Arduino Internals

Step by Step

Let’s go through the basic steps of programming your Arduino to perform a trivial task: blinking an LED. The actual step-by-step guide for this simple but important exercise is given in Chapter 5. This section only covers the main topics without going into specific, implementation-specific details.

Step 1: Write Some Code

Most beginning Arduino programmers don’t write their first sketch (Arduino program) by themselves. This is true of most programming languages. There is almost always a traditional, pared-down example exercise that is easy enough to complete in a single sitting yet complex enough to demonstrate that something is actually happening.

A Trivial Example in C

In the C programming language, on which the Arduino programming ...