LESSON 02 – BASIC PROGRAM

ARDUINO BASIC PROGRAM

Here is what an empty arduino program looks like:

void setup()

{

}

void loop()

{

}

COMMANDS

In programming, commands are called statements. We will place these statements inside the setup() function or inside the loop() function.

void setup()

{

//statements go here

}

void loop()

{

//statements go here

}

INDENTING

All statements inside the setup() or loop() function blocks should be indented by 4 spaces. This allows for each readiblility and is considered good programming practice.

SETUP VS LOOP

The setup function is executed once. So you place statements in there that you want to run once.

The loop function is executed over and over again. So statements that need to be repeated over and over need to be placed inside the loop function.

COMMENTS

We can add information that will be completely ignored by the arduino. We do this by starting the line with the double slash //. Such lines are called comments. Comments are often used to explain some of the more difficult parts of programs so that readers could understand what statements are doing.