Re: [avr-gcc-list] How to handle interrupt vectors ?

[dlc]

Pink Boy wrote:
> Charalampos Alexopoulos sez,
>
> > Thank you for your answer, but i am not looking for the
> > easiest way. I want to have some solution similar to previus 
> > example. I can use ISR's even with c++ with no problem, what 
> > i need, as i said before, is  to assign a  vector as  a static 
> > class member in a way similar to other types like :
> >
> > class foo
> > {
> >     public:
> >           static constant uint8_t data = 0x0a;
> >           ...
> > }
> >
> > then you can use it from some other class like:
> >
> > uint8_t local_data = foo::data;
>
> You scare me.  Run away.
>
> I always worry with C++ that I really don't understand what the 
> compiler is doing when it calls functions.  I guess my thought is
> that if you can't define the function as an isr inside the class
> then what you are trying to do isn't supported.
>
> If I were you and I'm not, I would have an ISR call your static
> function, then exit.  That will most likely work.  In general
> though I like to keep what I'm do in an ISR very simple (buffer
> data, generate events, time critical stuff) and let the main loop 
> or a task handle the complex stuff.


  I totally agree.  An ISR is NOT the place to put "pointer chasing" 
C++ dribbles.  I don't even like to call a function there!  There is no 
rule that says that every construct in a C++ program has to use the C++ 
object paradigms.  Define your ISR's using the smallest possible code. 
You will NEVER be dealing with an ISR as part of another object, nor 
will you ever likely inherit from an ISR.  Realistically ISR's are a 
thing apart from the rest of the program (usually) so this is rarely an 
issue.

IMO, IME,
DLC


> Mr Foo
>
>
>
>
> _______________________________________________
> AVR-GCC-list mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/avr-gcc-list

--
-------------------------------------------------
Dennis Clark          TTT Enterprises
www.techtoystoday.com
-------------------------------------------------