[ECOS] C API for timer and watchdog

[Trenton D. Adams]

How hard would it be to add this functionality in to redboot?  I imagine
it wouldn't be that difficult right?  This would be a nice feature for
testing purposes.

> -----Original Message-----
> From: ecos-discuss-owner@sources.redhat.com 
> [mailto:ecos-discuss-owner@sources.redhat.com] On Behalf Of 
> Jonathan Larmour
> Sent: December 7, 2001 11:45 AM
> To: Sam Sortais
> Cc: ecos-discuss@sources.redhat.com
> Subject: Re: [ECOS] C API for timer and watchdog
> 
> 
> Sam Sortais wrote:
> > 
> > Hi all,
> > 
> > I am using eCos on PC and was hopping to use C API but 
> found different issues:
> > 
> > 1) I noticed a watchdog component in the code, (not found 
> in PC latest doc, maybe under development ?) so I was 
> wondering if it was supported by PC platform.
> > Looking at the code it seems support is there and use an 
> emulation mode with RTC.
> > However the only interface seems to be in C++ and if I want 
> to do call in C I will have to write a wrapper.
> 
> Sorry yes.
> 
> > On the same topic I did not found a wrapper for Timer API in C.
> > Is the only way to use POSIX interface ?
> 
> Actually you can use the C library time() function.
> 
> > 2)Still about API, is there anyway (in C) to know what is 
> the current state of a thread ?
> 
> There isn't a well defined way, but you can access the 
> "state" member of a
> cyg_thread structure. The values are:
> 
>         RUNNING    = 0,          // Thread is runnable or running
>         SLEEPING   = 1,          // Thread is waiting for something to
> happen
>         COUNTSLEEP = 2,          // Sleep in counted manner
>         SUSPENDED  = 4,          // Suspend count is non-zero
>         CREATING   = 8,          // Thread is being created
>         EXITED     = 16,         // Thread has exited
> 
> 
> > 3) After loading and starting an application with RedBoot, 
> I was hopping to go back to RedBoot when the application 
> terminate, so I can load a new one. Is it the way it is 
> supposed to work ?
> 
> If you load using GDB this happens (when you quit GDB, which 
> sends a "kill"
> packet). If you load directly it doesn't.
> 
> Jifl
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