extern int wiringPiSetupGpio (void) ;
extern int wiringPiSetupPiFace (void) ;
+extern int piBoardRev (void) ;
+extern int wpiPinToGpio (int wpiPin) ;
+
extern int wiringPiSetupPiFaceForGpioProg (void) ; // Don't use this - for gpio program only
extern void (*pinMode) (int pin, int mode) ;