Hi, This is w.r.t Bug #28901. It says GPIO and CPU are defined in terms of missing definitions in all XMEGA headers.
One such example is: #define GPIO (*(GPIO_t *) 0x0000) /* General Purpose IO Registers */ #define CPU (*(CPU_t *) 0x0030) /* CPU Registers */ I am trying to understand GPIO and CPU from a programmer perspective. 1. What purpose do GPIO and CPU definitions serve? 2. If possible pl provide more info on how the structures are intended to be defined/used Regards Anitha _______________________________________________ AVR-libc-dev mailing list AVR-libc-dev@nongnu.org http://lists.nongnu.org/mailman/listinfo/avr-libc-dev