Mini2440 External Button

hdak

2011-06-08 11:15:00

Hi, how can i use external button with 2440's gpios?(under linux)

davef

2011-06-08 12:22:15

Download this document from Pengutronix:

OSELAS.BSP-Pengutronix-Mini2440-Quickstart.pdf

Juergen Beisert

2011-06-09 14:46:48

hdak,

in a current kernel (for example 2.6.39) they are already registerd as GPIO
based key buttons. I you run a 'cat /dev/input/event0' and press some of
the key buttons you should see some output. These key buttons are
configured to provide the function key codes (F1, F2, F3 and F5)