GPIO keys: Difference between revisions
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# cat /dev/input/event0 | # cat /dev/input/event0 | ||
</pre> | </pre> | ||
Then you should see weirds characters when pressing the user button of the apf51_dev board: | Then you should see weirds characters '''when pressing''' the user button of the apf51_dev board: | ||
<pre class="apf"> | <pre class="apf"> | ||
� | T | ||
����T | |||
�T | |||
� | |||
��T | |||
%� | |||
</pre> | </pre> | ||
* if the test wiped out your console, you can get it back with: | * if the test wiped out your console, you can get it back with: | ||
Revision as of 23:14, 5 June 2011
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
