We want to develop a simple web application that displays a color picker to allow the user to choose a color. Once the user picks a color, we can obtain the red, green and blue components from 0 to 255 inclusive. We want to set the brightness level for the red, green and blue LEDs on the board based on the red, green and blue values for the selected color. Based on this requirement, it is convenient to add a new PUT method to our RESTful API to allow us to change the brightness levels for the three LEDs in single API call.
The next lines show the code that adds a new PutRGBBrightnessHandler class. The code file for the sample is iot_python_chapter_04_03.py.
class PutRGBBrightnessHandler(tornado.web.RequestHandler):
def put(self, red, green, blue):
int_red = int(red)
int_green = int(green)
int_blue = int(blue)
BoardInteraction.red_led.set_brightness(int_red)
BoardInteraction.green_led.set_brightness...