Variable organization

[Acetronics2]

Hi, Ioannis

I believe PBP Variables are GLOBAL Variables ... and You'd better turn to "C" if you want LOCAL variables.

or "another Basiç " ... Booooooooooooooo.

Identifier is declared in the function or procedure Scope extends from the point where it is declared to the end of the current routine. These identifiers are referred to as locals.

Now, let's say I do not understand clearly what you mean ...

You simply could add a memo to the variable name like "Count_inter" or " Count_LCD "for your example ...

I do not think RAM is THE problem ... as you have to preserve the "eventually overwritten" Variables !!!


BTW ... I didn't find the Max. Variable Length in the Holy Manual ... ( 32 Characters ??? )

Alain

PS: Tell me You won't implement a " Variable Stack " ... tell me you won't ... lol

[Melanie]

Actually, I assumed the maximum variable length to be 65534 bytes (though I've never gone beyond about 8k personally - after all you gotta leave some space for your actual program too!!!)...

Word variable minus 2 (because you can't have 65536) and it has to be an even number because the way 18F parts store stuff in Program Codespace.

[Acetronics2]

Actually, I assumed the maximum variable length to be 65534 bytes (though I've never gone beyond about 8k personally - after all you gotta leave some space for your actual program too!!!)...

Word variable minus 2 (because you can't have 65536) and it has to be an even number because the way 18F parts store stuff in Program Codespace.

Hi, Mel ..

I meant the Max Variable NAME length ....

Alain

[Ioannis]

PS: Tell me You won't implement a " Variable Stack " ... tell me you won't ... lol

No, not yet Alain. I think Darrel did this a while back?

As for the C i do not feel very comfort... That += and =- get me on my nerves!

Melanie:

I usually name the variable in a way that is obvious as to what they are doing. But I don't like the CounterA, B, C, D, ... Z variables all to be used for the same task in different places. But I see no other way as the meaning of Local in PBP is not defined.

Thanks for the talking.

Ioannis

[Melanie]

If you're writing large complex programs, then your chosen PIC probably has so much RAM you're never going to use it all anyway... so why not have a dedicated set of variables for every subroutine and ISR... after all, that's what C does with it's local declarations.

[Ioannis]

Yes Melanie. That is what in practice I am doing. It would be nice though, if there was a way of recycling variables!

Ioannis

[mackrackit]

Maybe the Aliases idea is what you are looking for?