Hi Filipe, About 1). I am not sure, you should have a look at the assembly code. If you would replace a function by a procedure then you should have at least one parameter of the type 'out'. There is a way to speed up a function or procedure by declaring it 'inline'. If you do that the procedure or function is not called but the code is copied into the program where it is used. This increases the code size of your program but saves you a call to the procedure or function.
And if you use interrupts there is an option 'fast' to speed it up but I never used it and you need to take some precautions if you use that. Kind regards, Rob ________________________________ Van: [email protected] <[email protected]> namens flyway38 <[email protected]> Verzonden: zondag 21 augustus 2022 13:46 Aan: jallib <[email protected]> Onderwerp: Re: [jallib] Procedures vs Functions Hello Kiste, Thank you for your input. Cheers, FS On Sunday, August 21, 2022 at 12:03:37 PM UTC+1 Kiste wrote: Hi Filipe, I can tell you für 2): No. At compile time, the variable name is replaced by a fixed memory address. There's no difference if the name is declared inside a procedure/function or in the main program. There is, however, a little space ("access RAM") which contains a bit "faster" variables. So, it can make a little difference if a variable is declared earlier or later in a program. 8-bit PIC controllers are a bit special, as in a sense they don't have RAM at all, they merely have up to several thousand processor registers. Accessing (simple, not array) variables is therefore very fast compared to other processor architectures. Greets, Kiste Am Sonntag, 21. August 2022, 12:49:39 MESZ hat flyway38 <[email protected]> Folgendes geschrieben: Hi all, Always had this doubt about efficiency in choosing Procedure or Function for structuring my code. I know how to use them by experience in coding JAL for many years. Another doubt is declaring VARs inside Procedures or Functions will make them slower or not..., so here goes the questions; 1) - Which is the fastest/ efficient at runtime (Procedure or Function) ? 2) - Declaring VARs inside Procs/Funcs will make them slower ? Thank you very much Kind regards, Filipe Santos -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/049c5097-750d-4cf7-845a-a89720963961n%40googlegroups.com<https://groups.google.com/d/msgid/jallib/049c5097-750d-4cf7-845a-a89720963961n%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]<mailto:[email protected]>. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/365d7bab-9091-4ac5-b55f-265f5cd23104n%40googlegroups.com<https://groups.google.com/d/msgid/jallib/365d7bab-9091-4ac5-b55f-265f5cd23104n%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "jallib" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jallib/GVXP195MB1637DBE0E8F8E73A20BA5E98E66E9%40GVXP195MB1637.EURP195.PROD.OUTLOOK.COM.
