Reading pushbutton statuses and running a RESTful API

Now, we will integrate the code that checks the statuses of the two pushbuttons in our RESTful API. We want to be able to make HTTP requests to the RESTful API and we also want to be able to use the two buttons we have added to the breadboard.

We have to make Tornado run a periodic callback and write the code that checks the statuses of the two pushbuttons in this callback. We will take the code we wrote in the previous chapter when we created the last version of our RESTful API with the mraa 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_03.py.

We will add two class attributes and three class methods to the existing BoardInteraction class. The code file for the sample is iot_python_chapter_05_02.py.

class BoardInteraction:
    # The Red LED is connected to pin ~6
    red_led = AnalogLed(6, 'Red')
    # The Green LED is connected to Pin ~5
    green_led = AnalogLed...