redefining delay and delaymicros as personal function

Question

Is it possible to redefine delay and delaymicros function with #define ? I want to use timer2 interrupt instead of these.

Something like this:

#define delay(unisgned long ms) countMicros(uint16_t top, uint16_t storageVar)

setup(){}

loop(){
 delay();// function countMicros is called instead.
 }
void countMicros(uint16_t top, uint16_t storageVar){
//...}

Answer 1

Not exactly like that. You will have to manage the different sets of parameters, i.e. convert the incoming ms into the top and storageVar that would be appropriate for calling countMicros(). Maybe something like this:

#define delay(ms) mydelay(ms)

void mydelay(unisgned long ms) {
    uint16_t top = some expression;
    uint16_t storageVar = another expression;
    countMicros(top, storageVar);
}

where both expressions are a function of ms.

If the expressions are really simple, you could even put the whole thing inside a single macro, as in

#define delay(ms) countMicros(some expression, another expression)