![]() ![]() You’ll have to put all your files in the Test/folder as well, so the Arduino IDE can find them. Example: if your program is named Test.ino, then it will be automatically saved on a Test/ folder (the Arduino IDE does that). You must create all your files inside your Arduino program folder. Note that creating other files for an Arduino program is quite tricky. The classes you create will be also more reusable as you can include them in every file where you need them. Your code will become much more readable. In fact, for one class we’ll have 2 files: one Cpp file (.cpp) and one header file (.h). We’ll separate the code into 3 parts: the Led class, the Button class, and the “main”.Įach class will be on its own independent file. As your program grows in complexity, so your code length, until you reach a point where the code is so long that you spend more time finding stuff and fixing bugs instead of adding new functionalities. We want to use OOP for reusability, modularity, readability, etc, but it’s impossible if we write all the code in one file. The previous code works well, but everything is in the same file. get access to them in the setup() and loop() functions Create your objects in the global scope so you can class Led // don't forget the semicolon at the end of the class Let’s create a simple class to wrap the LED functionalities. You setup a digital pin to OUTPUT mode, and then you just need to set its state to HIGH or LOW. ![]() A class for a LEDĪn LED is a very basic component. Now let’s go step by step to reach this goal. When the button is not pressed we’ll do the opposite – turn off LED 1 & 3, and turn on LED 2 & 4. The goal of the tutorial will be to turn on LED 1 & 3, and turn off LED 2 & 4 when the button is pressed. 1* 10k Ohm resistor (for the push button).4* 220 Ohm resistors (one for each LED).1* Arduino Uno board (Any Arduino board will do).We’ll be using the following hardware setup: You can still follow this tutorial and get all the knowledge you need. Note: it’s OK if you don’t have any Arduino or hardware component available. The STL library is not available (not natively, you can still use an external library to get most of the functionalities).You can create classes, use inheritance, composition, and many other nice OOP functionalities, but: Arduino Object Oriented: it’s already everywhereĪrduino Object Oriented Programming limitationsĮven if Oriented Object Programming is possible with Arduino, you have to know the limitations.īasically, the Arduino language is a subset of C/C++.Arduino Object Oriented Programming limitations. ![]()
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