Question about LCD

Carlos Camargo cicamargoba at gmail.com
Wed Mar 17 11:02:14 EDT 2010


Hi

> One question about LCD:
> > How can I turn-on/off LCD?
> On: echo 0 > /sys/class/lcd/*/lcd_power
> Off: echo 4 > /sys/class/lcd/*/lcd_power
>


 echo 0 > /sys/class/lcd/gpm940b0-lcd/lcd_power

doesn't works :(


> Uhm, that looks as if you the display timings were changed.
> Or maybe the display contents is in CS1 range and somehow by switching
> between both the LCD controllers DMA gets out of sync or something.
>
> Does it always look the same after CS2 one write, or does it change
> with every write?
>
>
The same behavior on each CS2 write only.


Carlos



> - - Lars
>
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-- 
Carlos Iván Camargo Bareño
Profesor Asistente
Departamento de Ingeniería Eléctrica y Electrónica
Universidad Nacional de Colombia
cicamargoba at unal.edu.co
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