[ECOS] Re: cyg_thread_delay doesn't seem to be working

[Grant Edwards <grant dot b dot edwards at gmail dot com>]

On 2010-06-01, Aziz Bodal <azizbodal@gmail.com> wrote:

> I am trying to used the cyg_thread_delay function in my cyg_user_start
> function however it does not seem applying the delay. I am running the
> following snippet and I do not see the output of cyg_current_time()
> incrementing or even pausing. The cyg_current_time() always seems to
> be 0 when I try to output it using printf.  What am I doing wrong?

You can't use those routines in cyg_user_start() where the scheduler
and timer interrupt system aren't running.  Those only start after
cyg_user_start() returns.

Many years ago, there was a "System Startup chapter in the manual that
explained that sort of thing:

http://ecos.sourceware.org/docs-1.1/ref/ecos-ref/system-startup-cyg-user-start.html

But, that seems to be gone now.

The info on what you can do from cyg_user_start is now found in the
reference manual's "Kernel Overview" Chapter in a section on "Calling
Contexts". Unfortunately, the docs don't have any section numbering
scheme, so it's rather hard to cite them.

-- 
Grant


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