Advanced Raspberry Pi: Raspbian Linux and GPIO Integration

© Warren Gay 2018

Warren GayAdvanced Raspberry Pihttps://doi.org/10.1007/978-1-4842-3948-3_23

23. Nunchuk-Mouse

Warren Gay¹ 

(1)

St. Catharine’s, Ontario, Canada

 

You may not have a practical use for the Nintendo Wii Nunchuk as a Raspberry Pi mouse, but it serves as a good example of how LCD touchscreens supply their input events.

The Nunchuk has two buttons: an X-Y joystick; and an X, Y, and Z accelerometer. The sensor data is communicated through the I²C bus. This will give us a practice with the I²C C API as well. Let’s have some fun implementing a Nunchuk pointing device for the X Window system desktop.

Project Overview

The challenge before us breaks down into two overall categories:

• The I²C data communication of the Nunchuk device

• Inserting the sensed ...