Hi, how do I programm a recursive function? The compiler always puts variables in registers, therefore the function cannot be called recursivly. An other question, how do I put variables in XRAM? With IRAM it works because of the iram specifier. Is there something similar for XRAM? Thanks for help Bert Weber
The compiler always puts variables in registers, therefore the function cannot be called recursivly. Wrong. When calling a function, the compiler saves the registers that can be changed by the function on the stack. This way recursion works just fine: the stack grows, local variables don't get overwritten. With IRAM it works because of the iram specifier. Is there something similar for XRAM? Sort of: sdata may do. Any particular reason why you want variables in XRAM as opposed to other RAM in your system? Regards, - mike
how do I programm a recursive function Take a look at the reentrant function specifier. Jon