Re: [Avr-libc-corelib] Interrupt Handlers

[Jan Waclawek]

On Wed, 23 Sep 2009 10:44:59 -0500
Mike Perks <address@hidden> wrote:

> One of the issues that will need to handled (intentional pun) by the 
> library is ISRs. There are several use cases to consider:
> 
> 1. Library module wants to use an ISR
> 2. User wants to use an ISR
> 3. User wants to use an ISR but it is used by a library module
> 4. Two library APIs (presumably from different modules) both want to use 
> the same ISR

Can you please provide examples?

> Having a first come first served policy will not work. 

Why not?

> We probably need 
> to provide a way to have hooks such as a callback. The problem is that 
> this could be too heavyweight for what is supposed to be a fast response.
> 

I see no problem with having alternatives: lightweight, heavyweight, let the 
user choose what he wants.

I repeat myself: I anticipate the user will copy files to his project and 
possibly modify. I can't even imagine how could a pre-build library be less 
than cumbersome.

JW