Dynamic Function Calls?

Projects Programming
1

Is there a way to call functions dynamically? For example, if there was a function type...

function arrOfFunctions[] = { firstFunction, secondFunction };

void setup () {
arrOfFunctions1;
}

void firstFunction () {

}

void secondFunction () {

}

Is there any way to do it?

2

Yes, you can do that. You just need the appropriate typedef for "function".

3

Sorry that I'm too much of a noob, but how would I do that? I don't see typedef in the reference. Or is it the same as C?

4

Yes, Arduino uses C++.

Something like this (compiles, but not tested):

typedef void (*function) () ;

void firstFunction () {
 // whatever
}

void secondFunction () {
 // whatever
}

function arrOfFunctions[] = { firstFunction, secondFunction };

void setup () {
  arrOfFunctions[0]();
  arrOfFunctions[1]();
}

void loop () { }
1 Like
5

Thanks, but shouldn't it be...

function arrOfFunctions[] = { &firstFunction, &secondFunction }

?

6

Thanks, but shouldn't it be...

function arrOfFunctions[] = { &firstFunction, &secondFunction }

If you like typing, yes, you can put that, but the name of a function is a pointer to the function, so the address-of operator is redundant.

7

gladoscc:
Thanks, but shouldn't it be...

function arrOfFunctions[] = { &firstFunction, &secondFunction }

?

No. What I wrote works ... perhaps you should try it?