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On 03/28/2012 10:48 AM, Cudmore, Alan P. (GSFC-5820) wrote:
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<pre wrap="">On our RTEMS 4.10 project ( m68k/coldfire ), I have an exception handler that does a number of things such as closing files before restarting our processor card.
This works fine when a task has an exception, but did not work too well when I caught an exception in an ISR.
I found this macro:
_ISR_Is_in_progress
Which I can use to detect if the exception handler is running in an ISR. Is that a good enough way to detect that the code is running in the context of an ISR? Or is there a better/more standard way?
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<pre>bool rtems_interrupt_is_in_progress( void );
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Another option would be to have a high priority exception task running, just waiting to handle the exception clean up activity. The exception handler could use a semaphore to kick off the task.
Thanks,
Alan
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<pre class="moz-signature" cols="72">--
Joel Sherrill, Ph.D. Director of Research& Development
<a class="moz-txt-link-abbreviated" href="mailto:joel.sherrill@OARcorp.com">joel.sherrill@OARcorp.com</a> On-Line Applications Research
Ask me about RTEMS: a free RTOS Huntsville AL 35805
Support Available (256) 722-9985
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