Arduino program structure

In this chapter, we will delve into the structure of the Arduino program and learn more about the new terms used in the Arduino world. /b10> Arduino software is open source. /b11> The source code for the Java environment is released under GPL, and the C/C?microcontroller library is under LGPL.

Sketch - The first new term is the Arduino program called Sketch.

Structure

The Arduino program can be divided into three main parts: structure, value (variables and constants), and functions. /b10> In this tutorial, we'll take a step-by-step look at arduino software programs and how to write them without any syntax or compilation errors.

Let's start with the structure. The software structure consists of two main functions:

• Setup() function
• Loop() function

Void setup ( ) {

}

• PURPOSE - The setup() function is called when the sketch starts. /b10> Use it to initialize variables, pin mode, enable libraries, and more. T he setup function can only be run once after each power-up or reset of the Arduino board.

• INPUT - -

• OUTPUT - -

• RETURN - -

Void Loop ( ) {

}

• PURPOSE - After creating a setup() function for initializing and setting the initial value, the loop() function, as its name means, allows your program to continuously loop changes and responses. Y ou can use it to actively control the Arduino board.

• INPUT - -

• OUTPUT - -

• RETURN - -