Re: [avr-gcc-list] 2 interrupt sharing the same ISR

[Ned Konz]

On Friday 14 January 2005 2:21 pm, gouy yann wrote:
> I'd like to know if someone has an easy trick to make
> 2 interrupts ( timer overflow and timer output compare
> ) jump to the same address (ISR).
>
> duplicating the code or calling the same function from
> the ISRs is not that much convincing in term of flash
> or stack comsumption.
>
> I am considering using only the output compare as
> overflow is somehow a particular case of it.

Why not just do something like this (atmega8):

// SIGNAL(SIG_OVERFLOW1)
//
#define METOO_INTERRUPT(signame)                \
void signame (void) __attribute__ ((naked));    \
void signame (void) { __asm__ __volatile__ ("" ::); }

METOO_INTERRUPT(SIG_OVERFLOW1)

SIGNAL(SIG_OUTPUT_COMPARE1A)
{
}

-- 
Ned Konz
http://bike-nomad.com