GPIO keys

How to use gpio-keys driver to read states of the user switch of your Armadeus board (APF51)

Introduction

Your APF51 board features a user switch connected to a GPIO pin (GPIO1_3). The driver gpio-keys translates GPIO events in key/button events.

Test

# cat /dev/input/event0

Then you should see weirds characters when pressing the user button of the apf51_dev board:

 T
 ����T
      �T
        �
         ��T
            %�

• if the test wiped out your console, you can get it back with:

# reset