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RTEMS - rtems_clock_get_uptime() fails during timer tick



You did indeed understand my question. So the interrupt pending bit is the only way to know.

Does the ERC32 reset or count through 0? 

I am sensing that some more advice needs to be added to the manual for this.

--joel

Rolf Schroedter <rolf.schroedter at dlr.de> wrote:

>Joel Sherrill wrote, On 02.03.2011 14:25:
>> Is it possible to just check if the counter value is greater than what we programmed it with and treat that as a special case in the clock driver?
>>
>> --joel
>
>If I understand your question correctly, then the answer is: No.
>The LEON has a counter reload register (=999 for a 1 milliseconds tick).
>The hardware timer counter runs down from 999 to 0. On overrun it
>reloads =999 and generates the timer interrupt.
>So the timer counter will never be outside the 999...0 range.
>
>Rolf.
>
>> Rolf Schroedter <rolf.schroedter at dlr.de> wrote:
>>
>>> Problem report submitted, id=1748:
>>> https://www.rtems.org/bugzilla/show_bug.cgi?id=1748
>>>
>>> Rolf.
>>>
>>> On 25.02.2011 14:36, Joel Sherrill wrote:
>>>> On 02/25/2011 07:05 AM, Rolf Schroedter wrote:
>>>>> Hi Manual,
>>>>>
>>>>> Thanks for pointing to this thread.
>>>>> Your solution for the ERC/LEON2 is very similar to my patch for LEON3.
>>>>> However I noticed that these patches are still not included in the
>>>>> actual RTEMS sources that can be downloaded from Gaisler.com.
>>>>>
>>>> I never look at their source.  What they do is their own
>>>> issue.  I just want to make sure the official RTEMS source
>>>> is OK.
>>>>
>>>> --joel
>>>>> Rolf.
>>>>>
>>>>>
>>>>> On 25.02.2011 10:39, Manuel Coutinho wrote:
>>>>>> Hi all
>>>>>>
>>>>>> This problem has been already addressed on another thread:
>>>>>> http://www.rtems.com/ml/rtems-users/2009/march/msg00204.html
>>>>>>
>>>>>> Just my 2 cents
>>>>>> Manuel Coutinho
>>>>>>
>>>>> _______________________________________________
>>>>> rtems-users mailing list
>>>>> rtems-users at rtems.org
>>>>> http://www.rtems.org/mailman/listinfo/rtems-users
>
>
>-- 
>
>------------------------------------
>Rolf Schroedter
>German Aerospace Center
>Institute of Planetary Research
>D-12489 Berlin, Rutherfordstrasse 2
>Tel/Fax:  (+49) (30) 67055-416/384
>Email:    Rolf.Schroedter at dlr.de
>