Re: [avr-gcc-list] reentrant interrupt service routine

[Jan Menzel]

Dear Sven!
	Interrupts are disabled while they are executed. This way interrupt are 
by default executed without nesting. If you like to nest interrupts you 
have to reenable interrupts within your interrupt service handler using 
eg. sei(). I use this schema and it works without complains. You just 
have to be careful with your stack as the interrupt service which 
enables other interrupts an be called again and then lock the mcu.

        Best regards
                Jan

Sven Schlender wrote:
> Hi all,
>
> I just wondering if there are some experiences with reentrant interrupt
> service routines with avr-gcc. Is this a known issue? How the avr-gcc handle
> it? Is there a possibility to find such reentrant calls with a compiler or
> linker command line option?
>
> Best regards, Sven.
>
>
>
>
>
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