[Rickertsen2]

Recursion is a bad pracice on any platform and should be avoided. The PIC will crash after something like 28 levels of function calls. You should read up on the stack and how it works. Basically there is something called the stack, which can be thought of as well... a stack. A stack of books or plates or whatever floats your boat. The stack is used to keep track of function calls interrupts etc. Whenever a function is called, the memory address of whatever the processor was doing before the function call is "pushed" onto the top of the stack. The processor then jumps to the function and executes its code. When the function returns the stack is "popped", cuasing the processor to jump back to where is was before the function call. When functions are called inside of functions, multiple entries are made to the stack. The problem with recursion is is that the stack is a limited resource and eventually it overflows.