GUI Libraries, Frame Buffer and Input Devices

Sebastian Huber sebastian.huber at embedded-brains.de
Wed Dec 15 14:53:34 UTC 2010


Hi Chris!

On 12/15/2010 12:23 AM, Chris Johns wrote:
> On 14/12/10 10:37 PM, Sebastian Huber wrote:
>>
>> Apart from the mmap() issues I don't see a lot of
>> problems.
>>
> 
> The RTL development snapshot [1] has a mmap implementation for RTEMS. It
> is close to the standard how-ever the standard's wording could be
> improved to help MMU-less operating systems like RTEMS.
> 
> Chris
> 
> [1]
> http://www.rtems.org/ftp/pub/rtems/people/chrisj/rtl/rtl-20101020.tar.bz2

The problem with this mmap() implementation is that it only works with normal
file-like objects.  For a frame buffer device it will not work.  Here the
mmap() is supposed to provide the frame buffer area.

-- 
Sebastian Huber, embedded brains GmbH

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