* defined to a non-zero value instead to give the size in bytes of the control endpoint, to reduce the size of the compiled\r
* binary.\r
*\r
+ * <b>DEVICE_STATE_AS_GPIOR</b> - ( \ref Group_Device ) \n\r
+ * One of the most frequenty used global variables in the stack is the USB_DeviceState global, which indicates the current state of\r
+ * the Device State Machine. To reduce the amount of code and time required to access and modify this global in an application, this token\r
+ * may be defined to a value between 0 and 2 to fix the state variable into one of the three general purpose IO registers inside the AVR\r
+ * reserved for application use. When defined, the corresponding GPIOR register should not be used within the user application except\r
+ * implicitly via the library APIs.\r
+ *\r
+ * <b>HOST_STATE_AS_GPIOR</b> - ( \ref Group_Host ) \n\r
+ * One of the most frequenty used global variables in the stack is the USB_HostState global, which indicates the current state of\r
+ * the Host State Machine. To reduce the amount of code and time required to access and modify this global in an application, this token\r
+ * may be defined to a value between 0 and 2 to fix the state variable into one of the three general purpose IO registers inside the AVR\r
+ * reserved for application use. When defined, the corresponding GPIOR register should not be used within the user application except\r
+ * implicitly via the library APIs.\r
+ *\r
* <b>TOTAL_NUM_CONFIGURATIONS</b> - ( \ref Group_Device ) \n\r
* By default, the library determines the number of configurations a USB device supports by reading the device descriptor. This reduces\r
* the amount of configuration required to set up the library, and allows the value to change dynamically (if descriptors are stored in\r