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AT91SAM7S: nested interrupt function

Peter Brandon

Hi,

I want to add a function handling nested interrupts for the controller. Could you tell me the right position to add this function?

startup-file:

Undef_Handler   B       Undef_Handler
SWI_Handler     B       SWI_Handler
PAbt_Handler    B       PAbt_Handler
DAbt_Handler    B       DAbt_Handler
;IRQ_Handler     B       IRQ_Handler
IRQ_Handler     B       irq_fnct
FIQ_Handler     B       FIQ_Handler

irq_fnct

   //do some stuff - nested interrupt

I've add one breakpoint to the irq_fnct but it seems that the programm will not reach this part if a interupt occur.

I'm working with the atmel controller AT91SAM7S.

best regards
Peter

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  • 0 in reply to Peter Brandon

    The way to set a lot of global variables for each event (e.g deleting arp cache) and poll them in the main routine, sounds a little bit unefficient to me.

    Wouldn't you merely need one global variable, which tells the main routine "Do all the stuff that previously took place in the timer tick routine?"

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  • 0 in reply to Peter Brandon

    The way to set a lot of global variables for each event (e.g deleting arp cache) and poll them in the main routine, sounds a little bit unefficient to me.

    Wouldn't you merely need one global variable, which tells the main routine "Do all the stuff that previously took place in the timer tick routine?"

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