Backlight control

I managed to install emdebian and tslib on the mini2440. I have a
functional touch screen working, my only problem now is that the backlight
of the lcd turns of after a while and I can´t seem to make it turn on
again. 

Is there a way to directly control the backlight, make it turn on when
there's activity, or simplity keep it on at all times.

Thank you.

Hello,

i did not manage to modify this behaviour (e.g. via setterm -blank 0). Does
not seem to work.

Do you have a permament solution?

Temporarily, you can activate the screen, if it is blanked out, with: 
echo -e "\033[13]" > /dev/tty1

Cheers

Hi Mankin,
  I used emdebian too.But the mouse pointer(used TSlib) is not ok it
display in difference position when i touch,How to config,Help me Pls.

I already have full embedded apps runing on the board, automatic startup
and everything.

Peter:
About the blacksreen turning off, it seems it turns backon when you run a
Qt app, and as long one's running it does not turn off again.

Weetax:
you have a prog that generates the config file if I remember correctly
(ts_calibrate), I remember having to create the config file (empty) before
runing the ts_calibrate. then put the env variables pointing to where the
config is.

Hi weetax,

Try to use next exports for proper tslib functionality:

export TSLIB_CONSOLEDEVICE=none
export TSLIB_TSEVENTTYPE=INPUT
export TSLIB_FBDEVICE=/dev/fb0
export TSLIB_TSDEVICE=/dev/input/event1
export TSLIB_CALIBFILE=/etc/pointercal
export TSLIB_CONFFILE=/etc/ts.conf
export TSLIB_PLUGINDIR=/usr/lib/ts

Now calibrate your touchscreen using ts_calibrate. That's it. 
For QT normal functionality it is a good idea to use next export:

export QWS_MOUSE_PROTO=Tslib:/dev/input/event1

You can place all these exports to the /etc/profile file to prevent typing
them on every linux boot.