SWRU271I October 2010 – January 2020 CC2540 , CC2540T , CC2541 , CC2541-Q1 , CC2640R2F
The default values of HAL components, if not defined, have changed. See the hal_board_cfg.h file for a list of the default values. If you need to modify any of these, add a preprocessor definition. For example, HAL_KEY is now set to TRUE if not defined. Therefore, the SimpleBLEPeripheral project has added a new preprocessor definition: HAL_KEY=FALSE.