[ECOS] problem about interrupt end
Fri Nov 24 03:36:00 GMT 2006
I think i have excluded the reason of repeating interrupt causing this
I prolong the timer to a very big number..so I can see for the first timer
interrput the breakdown occurs...
since the board and cpu is designed by ourself, I doubt if the assembly
code for processing the interrupt needed to be modified(I refer to the code
process :__defualt_intterrupt_vsr-->hal_interrupt_handlers-->isr--here code
crashed))???is it possible?
thanks a lot
>From: Nick Garnett <firstname.lastname@example.org>
>To: "jiang jet" <email@example.com>
>Subject: Re: [ECOS] problem about interrupt end
>Date: 23 Nov 2006 09:43:34 +0000
>"jiang jet" <firstname.lastname@example.org> writes:
> > thank you for answering my question...
> > I trace the interrupt progress, and I found the number is changed when
> > the code is going from assembly code to c codeÂ£Â¨call isr through
> > hal_interrupt_handlers)..
> > it's the first time for timer to interrupt and then the program breaks
> > down..
> > do you mean there are some other interrupts or the same intererupts
> > happened during this period(from system bootup to the time of the
> > first timer interrupt happening)?
>It may be the same interrupt happening again. If the interrupt
>condition has not been cancelled, it is possible for the interrupt to
>be re-delivered as soon as interrupts are re-enabled. If this is
>before the stack has been totally unwound, then it will chew its way
>down the stack and on into other data.
>Note that this is only a suggestion, I have no idea whether this is
>what is actually happening in your case.
> > and I adjust the stack size ,but it seems it doesn't work :(
>It is unlikely that this will have any effect, the stack corruption
>will chew up any size of stack very quickly.
>Nick Garnett eCos Kernel Architect
>http://www.ecoscentric.com The eCos and RedBoot experts
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