How to change callback in SimpleTimer Arduino?

Question

Arduino

I use the library playground.arduino.cc/Code/SimpleTimer
as a timer There was a need to change the callback for some timers. The problem is that you have to disable the timer and create a new one with a different callback. In code, this solution looks cumbersome.
Is it possible to create a variable and write the name of the function for setInterval into it, and then just change the value of this function?

Answer 1

You can specify a function in the callback that will pull another function by the pointer.
The pointer is global - redefine it if necessary.
An example of working with function pointers:

void start(char* p) {
Serial.println(p);
}
 
void (*Write)(char*);
 
void setup()
{
Serial.begin(9600);
Write = &start;
(*Write)("I've started, yeah! :)");
}

void loop()
} 
}

Where (*Write)(char*) is a pointer.