Re: [microblaze-uclinux] usleep

[Yasushi SHOJI <yashi@xxxxxxxxxxxxxxxxx>]

At Mon, 25 Oct 2004 13:53:44 -0600,
Jay Norrish wrote:
[...]
> I am trying to use the usleep() function to
> put my application to sleep while my peripherals
> do data acquisition but, I have not been able to get
> the function to have a resolution of less than 10ms
> which is the tick rate. I know I could change the tick rate
> with the #define HZ in the mb_vannilla.h file but I am worried that it will
> break other programs.

I wouldn't recommend to change HZ for 2.4, if you don't know the
kernel internal.  it might or might not work.

> Is there another function or way to do this ?

use bigger fifo and/or interrupt.  even with those, timing is not
guaranteed.  Linux is not a realtime os after all.

my 2 cents.

best,
--
            yashi
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