timer.h

Go to the documentation of this file.

#ifndef __H8300_TIMER_H
#define __H8300_TIMER_H

void h8300_timer_tick(void);
void h8300_timer_setup(void);
void h8300_gettod(unsigned int *year, unsigned int *mon, unsigned int *day,
           unsigned int *hour, unsigned int *min, unsigned int *sec);

#define TIMER_FREQ (CONFIG_CPU_CLOCK*10000) /* Timer input freq. */

#define calc_param(cnt, div, rate, limit)           \
do {                                \
    cnt = TIMER_FREQ / HZ;                  \
    for (div = 0; div < ARRAY_SIZE(divide_rate); div++) {   \
        if (rate[div] == 0)             \
            continue;               \
        if ((cnt / rate[div]) > limit)          \
            break;                  \
    }                           \
    if (div == ARRAY_SIZE(divide_rate))         \
        panic("Timer counter overflow");        \
    cnt /= divide_rate[div];                \
} while(0)

#endif