This is the mail archive of the
ecos-discuss@sourceware.org
mailing list for the eCos project.
Re: ISR not causing an DSR in some rare conditions
Hi,
i'm using XScale PXA270 processor with latest eCos and I think I found a
problem with DSR's. I'm 100% sure that there must be a condition where
eCos
not calls the DSR of an interrupt. I have a IRQ which comes 45 times a
second on a system running at high load. After more then 10 hours one
DSR
is missing. This is a bad situation which makes the system unstable.
Is this problem known? Maybe it depends only on the architecture (ARM).
Does the ISR reenable the interrupt? It could be the next interrupt
arrives before the DSR is called. In that case the DSR will be called
with the count value of 2.
No. The interrupts will not be disabled at any time. The interrupt from
this source will only be acknowledged in the isr function.
The functionality is simple. A hardware unit will be started and reports
the finish with an interrupt. I have made a counter on hardware unit start,
isr and dsr. After this long-run test, the dsr counter is one less than the
other counters.
Bye...
--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss