You are looking at an old revision of the page Devices-Overview. This revision was created by Nikolaus Schaller.
Table of Content
How to control Devices from user space (command line)
Introduction
This page lists the most important devices and drivers that are specific to this board. And how they can be accessed from user space.
Touch Screen
is mapped to
/dev/input/touchscreen
pen down status can be read through
cat /sys/devices/virtual/gpio/gpio157/value
LCD
can be selected by adding defaultdisp="lcd" to the boot args
choose from user space by ???
DVI
can be selected by adding defaultdisp="dvi" to the boot args
power (state=0: off, state=1: on)
echo $state /sys/devices/virtual/gpio/gpio170/value
S-Video
can be selected by adding defaultdisp="venc" to the boot args
Backlight
power (state=0: off, state=1: on)
echo $state /sys/devices/virtual/gpio/gpio145/value
GPS
power (state=0: off, state=1: on)
echo $state /sys/devices/virtual/gpio/gpio156/value
device file (use 9600 baud)
cat /dev/ttyS2