control my lcd back light brightness

Jack_555

2012-08-29 07:38:21

hello friends,

             Is it possible to control my lcd brightness in linux  via c
program or else any method 

And also there is default option for that in qtopia 2.2 in the name power
management. Is it possible to get the code for that...




Thanks in advance...


Jack

Juergen Beisert

2012-08-29 10:22:15

If the hardware is prepared to control the backlight brigthness: mostly
yes. You should check this first.

Mageshwaran

2012-08-29 10:47:08

Is it possible to control by software..?

Juergen Beisert

2012-08-29 14:37:29

If the brightness can be controlled in hardware (for example via a PWM
signal from the CPU side) you can control this PWM via software and this
will enable you to control the brightness. But you have still to check
first if the hardware is prepared to do so.