xmega_timer.h

#ifndef __XMEGA_TIMER_H__
#define __XMEGA_TIMER_H__ 1

#if F_CPU == 32000000UL
        #define CLOCK_CONF_SECOND       125
        #define TIMER_TOP      250
        #define TIMER_PRESCALE TC_CLKSEL_DIV1024_gc
#elif F_CPU == 16000000UL
        #define CLOCK_CONF_SECOND       125
        #define TIMER_TOP      500
        #define TIMER_PRESCALE TC_CLKSEL_DIV256_gc
#elif F_CPU == 18000000UL
        #define CLOCK_CONF_SECOND       375
        #define TIMER_TOP      750
        #define TIMER_PRESCALE TC_CLKSEL_DIV64_gc
#elif F_CPU == 20000000UL
        #define CLOCK_CONF_SECOND       125
        #define TIMER_TOP      625
        #define TIMER_PRESCALE TC_CLKSEL_DIV256_gc
#elif F_CPU == 8000000UL
        #define CLOCK_CONF_SECOND       125
        #define TIMER_TOP      250
        #define TIMER_PRESCALE TC_CLKSEL_DIV256_gc
#elif F_CPU == 4000000UL
        #define CLOCK_CONF_SECOND       125
        #define TIMER_TOP      250
        #define TIMER_PRESCALE TC_CLKSEL_DIV256_gc
#elif F_CPU == 2000000UL
        #define CLOCK_CONF_SECOND       125
        #define TIMER_TOP      250
        #define TIMER_PRESCALE TC_CLKSEL_DIV64_gc
#else
        #error CPU Frequence Unknown
#endif

#endif /* #ifndef __XMEGA_TIMER_H__ */