This is the mail archive of the ecos-discuss@sources.redhat.com mailing list for the eCos project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]

Re: Non-char devices corrected


Niclas Anderberg wrote:
> > But if
> I want
> > to access the LCD directly, I would either have to wrap the drawing-info
> in
> > a buffer
> > (not being too efficient) or make the
> > drawing functions
> > public property in the kernel hoping to access them directly from
> userspace
> > (which is probably
> > possible since i don't have any MMU or well documented supervisor mode on
> my
> > chip).
> > I would like a platform generic way of writing a display driver, and I am
> > probably missing
> > something. That is where you guys come in :). Any tips and hints?

It is a deliberate decision in eCos not to have a kernel-space/user-space
divide, due to the overhead. So don't let that aspect make you think it
won't be generic.

Jifl
-- 
Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062
Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine
Come to the Red Hat TechWorld open source conference in Brussels!
Keynotes, techie talks and exhibitions    http://www.redhat-techworld.com/


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]