使用device-tree (DT) overlay应该是更方便的方法:
http://blog.gegg.us/2017/01/setting-up-a-gpio-button-keyboard-on-a-raspberry-pi/
Back in late 2013, when I wrote the first Version of a raspberry-pi based software controlling a HD44780 based 420…
使用device-tree (DT) overlay应该是更方便的方法: http://blog.gegg.us/2017/01/setting-up-a-gpio-button-keyboard-on-a-raspberry-pi/ Back in late 2013, when I wrote the first Version of a raspberry-pi based software controlling a HD44780 based 420 c…