- * To reduce program size and speed up checks of this global, it can be placed into the AVR's GPIOR0\r
- * hardware register instead of RAM by defining the DEVICE_STATE_AS_GPIOR0 token in the project\r
- * makefile and passing it to the compiler via the -D switch. When defined, the GPIOR0 register should\r
- * not be used in the user application except implicitly via the library APIs.\r
+ * To reduce program size and speed up checks of this global, it can be placed into one of the AVR's\r
+ * GPIOR hardware registers instead of RAM by defining the DEVICE_STATE_AS_GPIOR token to a value \r
+ * between 0 and 2 in the project makefile and passing it to the compiler via the -D switch. When\r
+ * defined, the corresponding GPIOR register should not be used in the user application except\r
+ * implicitly via the library APIs.\r