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Brightness control on AM3715EVM

mshklyarman
Prodigy 200 points

Hi,

 

I am wondering whether brightness control is actually functional on AM3715evm running FroYo. The GUI appears to be functional  (I can move the slider to increase/decrease brightness) but it has no effect on actual brightness of the screen. Is it supposed to be working? Does HW support exist?

 

Thanks,

Michael

  • 0
    TI__Expert 7220 points

    Hi Michael,

    Brightness control is not functional on AM3517evm running on froyo. This is because HW does not support brightness control.

    HW supports only OFF(Disable LCD) and ON(Enable LCD).

    echo 4 > /sys/class/graphics/fb0/blank disables LCD.

    echo 0 > /sys/class/graphics/fb0/blank enables LCD.

    Regards,

    Arun