Tutorial : Create and use functions
If you do not know how to create a new project have a look to the tutorial How to create a new project ?.
In this tutorial we will see how to define a simple function and reuse it with the Arduino Designer.
In this example we use the Arduino Uno platform and hardware components from the DFRobot Ardublock kit.
The hardware is defined as below :
The DFRduino Uno R3 platform is used, the white LED module is connected to the digital pin 11 of the Arduino board. It is important to connect the LED to a PWM digital pin. PWM is a technique for getting an analog-like behavior from a digital output by switching it off and on very fast.
In the sketch, we use the blue and red LEDs as Status modules.
The function must be created thanks to the New function tool available in the Functions section of the palette. Then to edit the function definition, double click on it. A new editor opens. You can define the parameters of the function thanks to the xxx Parameter tools available in the Functions palette. To then reference a defined parameter in the sketch, use the Use Parameter tool.
Then go back to the Sketch representation and define the function parameters using the Parameter tool.
A function can be reused just by selecting the Use tool available in the Functions section. This tool opens a wizard proposing all the defined functions.
Finally, click on the Upload button from the toolbar to upload the code to the Arduino board.
The source of this example are available in : https://github.com/mbats/arduino/tree/master/examples/fr.obeo.dsl.arduino.examples.functions