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Hi,

This may be daft but does the compiler allow you to call functions from
interrupts? Generally, I keep things tight in the interrupt (certainly to
the point of writing some assembler over C) so no function calls are
performed......or, is your function call just an abstraction of what you
are actually doing, for the purpose of the example?

Dan





 (Embedded     Michael Rigby-Jones <mrjones@NORTELNETWORKS.COM>@MITVMA.MIT.EDU>
 image moved   07/02/2001 12:15
 to file:
 pic03902.pcx)





Please respond to pic microcontroller discussion list
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To:   PICLIST@MITVMA.MIT.EDU
cc:
Subject:  Re: [PIC]: Return From Interrupt

Security Level:?         Internal


I suggest you should enable your interrupts AFTER the Flash_the)led()
function.  Are you sure that you aren't overflowing the stack with the
combined calls in your main loop and the ISR calls?

Mike

> -----Original Message-----
> From: Nuri ERGINER [SMTP:nerginer@SSM.GOV.TR]
> Sent: Wednesday, February 07, 2001 6:58 AM
> To:   PICLIST@MITVMA.MIT.EDU
> Subject:      [PIC]: Return From Interrupt
>
> Hi,
>
> I am using hi-tech C to program my pic16f84a. I write a code with
> interrupts.
> But there is a problem. When an interrupt occurs the code perfectly go to
> the inturrupt procedure. When it finish executing the inturrupt procedure
> it begins to execute the main block starting from the begining. Here is a
> demo code:
>
>
> main()
> {
>         GIE=1;
>         INTE=1;
>         Flash_the_led();
>
>         while(1){
>                 Do_other_stuff();
>         }
> }
>
> static void interrupt isr(void){
>         if (INTF) {
>                 inturrupt_stuff();
>                 INTF=0;
>         }
> }
>
> after executing isr() the code went to Flas_the_led() procedure but It
> must
> execute the Do_other_stuff();
> I need your help
>
> Regards,
> Nuri Erginer
>
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>

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