* between 0 and 2 in the project makefile and passing it to the compiler via the -D switch. When
* defined, the corresponding GPIOR register should not be used in the user application except
* implicitly via the library APIs.
*
* \note This global is only present if the user application can be a USB host.
*
* between 0 and 2 in the project makefile and passing it to the compiler via the -D switch. When
* defined, the corresponding GPIOR register should not be used in the user application except
* implicitly via the library APIs.
*
* \note This global is only present if the user application can be a USB host.
*