> Could anyone know whether it is possible to enable and use embedded
> interrupt in AVR ATMega using GCC? If yes, how to determine the
> interrupt priority?

GCC can be used to write interrupts for an AVR - see
http://www.freertos.org/implementation/a00012.html for an example.
The priority is set by the hardware however.

Answer: Use sei() inside ISR.

On 24 Jul 2004 03:03:17 -0700, leonlai2k@yahoo.com (terry) wrote:

>Hi,
>
>Could anyone know whether it is possible to enable and use embedded
>interrupt in AVR ATMega using GCC? If yes, how to determine the
>interrupt priority?
>

Hi,

The interrupt priorities on the AVR is fixed. If you want to change
this you need to play around with enableing/disabling interrupts
inside interrupt routines. Get the avr-libc documentation
http://www.nongnu.org/avr-libc/

Regards
   Anton Erasmus

> interrupt in AVR ATMega using GCC? If yes, how to determine the
> interrupt priority?

Not sure what you're asking here exactly - interrupt priority in the AVR
series is determined by hardware. Vectors lower in memory have higher
priority.

Hi,

Could anyone know whether it is possible to enable and use embedded
interrupt in AVR ATMega using GCC? If yes, how to determine the
interrupt priority?

Thanks!