48 #   include "xmega/cycle_counter.h"    50 #   include "mega/cycle_counter.h"    80 #       define F_CPU sysclk_get_cpu_hz()    98 #define delay_init(fcpu_hz)   105 #define delay_s(delay)      ((delay) ? cpu_delay_ms(1000 * delay, F_CPU) : cpu_delay_us(1, F_CPU))   112 #define delay_ms(delay)     ((delay) ? cpu_delay_ms(delay, F_CPU) : cpu_delay_us(1, F_CPU))   119 #define delay_us(delay)     ((delay) ? cpu_delay_us(delay, F_CPU) : cpu_delay_us(1, F_CPU)) ARM functions for busy-wait delay loops.