Book Image

Learning C for Arduino

By : Syed Omar Faruk Towaha
Book Image

Learning C for Arduino

By: Syed Omar Faruk Towaha

Overview of this book

This book will start with the fundamentals of C programming and programming topics, such data types, functions, decision making, program loops, pointers, and structures, with the help of an Arduino board. Then you will get acquainted with Arduino interactions with sensors, LEDs, and autonomous systems and setting up the Arduino environment. Moving on you will also learn how to work on the digital and analog I/O, establish serial communications with autonomous systems, and integrate with electronic devices. By the end of the book, you will be able to make basic projects such as LED cube and smart weather system that leverages C.
Table of Contents (17 chapters)
Learning C for Arduino
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Functions


Do you know how to make instant coffee? Don't worry; I know. You will need some water, instant coffee, sugar, and milk or creamer. Remember, we want to drink coffee, but we are doing something that makes coffee. This procedure can be defined as a function of coffee making. Let's finish making coffee now. The steps can be written as follows:

  1. Boil some water.

  2. Put some coffee inside a mug.

  3. Add some sugar.

  4. Pour in boiled water.

  5. Add some milk.

And finally, your coffee is ready! Let's write a pseudo code for this function:

function coffee (water, coffee, sugar, milk) { 
  add coffee beans; 
  add sugar; 
  pour boiled water; 
  add milk; 
  return coffee; 
} 

In our pseudo code we have four items (we would call them parameters) to make coffee. We did something with our ingredients, and finally, we got our coffee, right? Now, if anybody wants to get coffee, he/she will have to do the same function (in programming, we will call it calling a function) again....