<div dir="ltr"><div><div>I just have one more questions regarding the timer which I am not able to find in the document. Now, with your help I am able to create the timer, and for setting that up, I am using "rtems_timer_fire_after" directive. The status code returned by this function doesn't show any error, but my "callback function" is not getting called. After looking in the definition of function "rtems_timer_fire_after", I found that timer internally uses "watchdog" functionality. Does that mean watchdog device driver required for timer? I am working on sparc simulator, and I think the sparc bsp does not have watchdog driver because I got linker error after including the "CONFIGURE_APPLICATION_NEEDS_WATCHDOG_DRIVER ".<br>
<br></div>Thanks<br></div>Manish<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, Apr 7, 2013 at 6:18 PM, Joel Sherrill <span dir="ltr"><<a href="mailto:joel.sherrill@oarcorp.com" target="_blank">joel.sherrill@oarcorp.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000"><div class="im">
<div>On 04/07/2013 03:32 PM, manish jain
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div>
<div>Thanks Joel..<br>
</div>
It is working now but while I used clock driver with timer I
didn't get any compiler error..<br>
<br>
</div>
</div>
</blockquote></div>
I am glad to know that worked.<br>
<br>
I have a patch in my tree so next time someone will get a compile
error.<br>
You can only specify one of need clock, need timer, or do not need
clock.<br>
There were checks for having 0 defined but not > 1. <br><span class="HOEnZb"><font color="#888888">
<br>
--joel</font></span><div><div class="h5"><br>
<blockquote type="cite">
<div dir="ltr">Manish<br>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">
On Sun, Apr 7, 2013 at 4:18 PM, Joel Sherrill <span dir="ltr"><<a href="mailto:joel.sherrill@oarcorp.com" target="_blank">joel.sherrill@oarcorp.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<div>On 04/07/2013 03:05 PM, manish jain wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
I am just running a small Init task in which I am
creating a "timer". But the status returned by the
"rtems_timer_create" function is "RTEMS_TOO_MANY ". I
think, this status is referring to a maximum numbers
of objects already allocated. But in my task I am just
creating one timer. Do I need to preconfigure before
using the timer? For now I am using following macros:<br>
<br>
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER<br>
#define CONFIGURE_INIT_TASK_ATTRIBUTES
RTEMS_FLOATING_POINT<br>
#define CONFIGURE_APPLICATION_NEEDS_TIMER_DRIVER<br>
<br>
Can someone tell me what I might be missing? I am
currently running my task on sparc sis simulator.<br>
<br>
</blockquote>
</div>
</div>
You can't configure the timer and clock driver at the same
time.<br>
This should have resulted in a compile time error. On most
BSPs,<br>
these use the same hardware so it is considered a general
error.<br>
Besides, the timer driver is for a "benchmark timer" used by<br>
the RTEMS Timing Test Suites -- and they assume no clock
tick.<br>
<br>
I don't know why your initialization task needs floating
point but<br>
that is your application's requirement.<br>
<br>
If you are creating a Classic API timer via the
rtems_timer_create()<br>
method, then you need to configure the system to account for<br>
how many instances of Classic API Timers you need.
Something<br>
like this:
<div><br>
<br>
#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER<br>
#define CONFIGURE_INIT_TASK_ATTRIBUTES
RTEMS_FLOATING_POINT<br>
</div>
#define CONFIGURE_MAXIMUM_TIMERS 1<br>
<br>
If you need more than one timer, then up that number.<br>
<br>
If you want standard in, out and error to work (e.g.
printf()), then<br>
you should also have:<br>
<br>
#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER<br>
<br>
I just posted a re-write of the Configuring a System chapter
in the<br>
Users Guide. Everything you should need to know is in it and<br>
hopefully better presented than the current version.<br>
<br>
<a href="http://www.rtems.org/ftp/pub/rtems/people/joel/config-v1.pdf.bz2" target="_blank">http://www.rtems.org/ftp/pub/rtems/people/joel/config-v1.pdf.bz2</a><br>
<br>
The current version is terse where the new version includes<br>
more information in a more structured fashion. :)<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Manish<br>
<br>
<span><font color="#888888">
</font></span></blockquote>
<span><font color="#888888">
<br>
<br>
-- <br>
Joel Sherrill, Ph.D. Director of
Research& Development<br>
<a href="mailto:joel.sherrill@OARcorp.com" target="_blank">joel.sherrill@OARcorp.com</a> On-Line Applications
Research<br>
Ask me about RTEMS: a free RTOS Huntsville AL 35806<br>
Support Available <a href="tel:%28256%29%20722-9985" value="+12567229985" target="_blank">(256) 722-9985</a><br>
<br>
</font></span></blockquote>
</div>
<br>
</div>
</blockquote>
<br>
<br>
<pre cols="72">--
Joel Sherrill, Ph.D. Director of Research& Development
<a href="mailto:joel.sherrill@OARcorp.com" target="_blank">joel.sherrill@OARcorp.com</a> On-Line Applications Research
Ask me about RTEMS: a free RTOS Huntsville AL 35806
Support Available <a href="tel:%28256%29%20722-9985" value="+12567229985" target="_blank">(256) 722-9985</a></pre>
</div></div></div>
</blockquote></div><br></div>