Please attach your configuration.h and pins.h files.
Looking at mine, it appears that the encoder pins are defined for REPRAP_DISCOUNT_SMART_CONTROLLER, but not the REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
I'm not using either controller, but will take a look...
Looking at mine, it appears that the encoder pins are defined for REPRAP_DISCOUNT_SMART_CONTROLLER, but not the REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER
I'm not using either controller, but will take a look...