Delay setting RTEMS clock with TOD_Set.

[Rafael Morales]

Dear all,

We are using a development system based on Leon3 at 25MHz clock and 
RTEMS 4.10 (Gaisler version 4.10.1.2.8).

We are experiencing a big delay setting the clock time with TOD. The 
sequence is:

      struct timespec startTimeStamp;
     get_time_stamp(&startTimeStamp);

     _Thread_Disable_dispatch();
     _TOD_Set( newtime );
     _Thread_Enable_dispatch();

     struct timespec stopTimeStamp;
     get_time_stamp(&stopTimeStamp);


If we get the new time after the _TOD_Set, we see that current time as 
about 1-5 milliseconds late. We have try to delete the 
_Thread_Disable_dispatch and _Thread_Enable_dispatch with no results. It 
seems that the call _TOD_Set is the responsible of the delay

Any idea about how to manage this situation?

Thanks in advance.

> Hi,
>
> here is the proof for the patched hello world on the sis target and 
> the patch generated by git. I hope it's okay.
>
> I also got a first draft of the proposal, so the question is: Who 
> wants to read it?
>
> Regards,
> Philipp
>
>
> screenshot:
> https://wwwpub.zih.tu-dresden.de/~s8940405/gdb_hello_world.png
>
> patch:
> https://wwwpub.zih.tu-dresden.de/~s8940405/0001-hello-world-gsoc-2013-fix.patch 
>
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>
>