My main routine static int P ; function F ( &P ) ; The function void function F ( int *P) { P = 42 ; } It fails mysteriously if the P is NOT declared static. It works for char data type, but not int or float. (I was just browsing the GRBL software package where they have the same construction, …

Solved: Why does it have to be static?

Arrch September 16, 2012, 7:30pm 2

F is a macro used to keep string constants from taking up SRAM. Try a different name.

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