This discussion has been locked.

You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How to make a auto-call function when create a 51 library

CY over 11 years ago

I create a library, which needs some initialization. Currently i just provide a function mylib_init, and tells the users of my lib, call it before use other functions of my lib. but it seems somewhat stupid. so, is there any way to make mylib_init to be called automatically when my lib is used?

0 ImPer Westermark over 11 years ago

char mylib_initialized;

void mylib_initialize() {
    if (!mylib_initialized) {
        ...
        mylib_initialized = TRUE;
    }
}

int mylib_do_something() {
    mylib_initialize();
    ...
}

int mylib_do_something_else() {
    mylib_initialize();
    ...
}

Or inline the test of mylib_initialized before the call - extra cheap if using a bit variable:

int mylib_do_something() {
    if (!mylib_initialized) mylib_initialize();
    ...
}