So far, we have been using the mraa library to read digital inputs. However, in the first chapter, we also installed the wiring-x86 library. We can change just a few lines of our object-oriented code to replace the mraa library with the wiring-x86 one to check whether the pushbuttons were pressed.
We will take the code we wrote in the previous chapter when we created the last version of our RESTful API with the wiring-x86 library and we will use this code as a baseline to add the new features. The code file for the sample was iot_python_chapter_04_04.py.
First, we will create a new version of the PushButton class to represent a pushbutton connected to our board that can use either a pull-up or a pull-down resistor. The following lines show the code for the new PushButton class that works with the wiring-x86 library. The code file for the sample is iot_python_chapter_05_03.py.
from wiringx86 import GPIOGalileoGen2 as GPIO
class PushButton...