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Problem with spurious interrupt on ARM


Hi,

I sometimes receive a spurious interrupt (hal_IRQ_handler() returns
CYGNUM_HAL_INTERRUPT_NONE). After that happens my DSR is no longer called,
although it's dsr_count is 1.

More specific what happens is:
* I press a button causing an interrupt
* the interrupt is reconfigured to happen when the button is released.
* I release the button
* When the button is released I receive a spurious interrupt before the
button's ISR is called.
* The button's ISR is called and returns CYG_ISR_CALL_DSR
* The DSR is NOT invoked

eCos is configured to ignore spurious interrupts. I have tried using both
linked lists and fixed-size tables for the DSRs.


Any suggestions to solutions would be much appreciated!

Venlig Hilsen / Regards 
Morten

-- 
Morten Laursen, M.Sc.S.E.
RTX Telecom A/S - http://www.rtx.dk/
Direct phone: (+45) 96 32 24 03


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