Re: How to write to screen with framebuffer?

Have a look at 'ezfb' at http://www.akrobiz.com/ezfb/index.html
It is a 'Linux Framebuffer API', you should be able to get a simple
demo running pretty quickly.

Regards,
Ian.


On 7 March 2013 02:01, Parmenides <[email protected]> wrote:
> Hi, all
>
> I have compiled the uClinux and run it on my board successfully. Now I need
> run a program which is to write some picture to LCD screen. So, I recompiled
> the uClinux with the following kernel configuration:
>
> Character devices
>     --> Virtual Terminals
>
> Console drivers
>         --> Support Frame buffer devices
>         --> Frame-buffer support
>                 --> Support for frame buffer devices
>                         --> S3C44B0X LCD support
>                         --> Advanced low level driver options
>                                 --> 2 bpp packed pixels support
>                                 --> 4 bpp packed pixels support
>                                 --> 8 bpp packed pixels support
>                                 --> 16 bpp packed pixels support
>                                 --> 32 bpp packed pixels support
>                         --> Select compiled-in fonts
>                                 --> VGA 8*8 font
>                                 --> VGA 8*16 font
>
> After the uClinux booting, a penguin logo displayed on the LCD screen. So, I
> think the framebuffer driver must work well. But, when I run a program to
> write the LCD screen directly, there is no picture displayed at all. I think
> when the LCD is used as virtual terminal, the picture may not be displayed.
>
> So, I want to use the framebuffer driver without the virtual terminal
> support. Is there any way to achieve the goal? Thanks!
>
>
>
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