39 lines
897 B
C
39 lines
897 B
C
#include <internals/rtc.h>
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#include <rtc.h>
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#include <mpu.h>
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/*
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integer()
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Converts a BCD value to an integer.
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*/
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static int integer8(int bcd)
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{
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return (bcd & 0x0f) + 10 * (bcd >> 4);
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}
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static int integer16(int bcd)
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{
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return (bcd & 0xf) + 10 * ((bcd >> 4) & 0xf) + 100 * ((bcd >> 8) & 0xf)
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+ 1000 * (bcd >> 12);
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}
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/*
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rtc_getTime()
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Reads the current time from the RTC. There is no guarantee that the
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week day is correct (use the time API for that).
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*/
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struct RTCTime rtc_getTime(void)
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{
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volatile struct mod_rtc *rtc = isSH3() ? RTC_SH7705 : RTC_SH7305;
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struct RTCTime time;
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time.seconds = integer8(rtc->RSECCNT.BYTE);
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time.minutes = integer8(rtc->RMINCNT.BYTE);
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time.hours = integer8(rtc->RHRCNT.BYTE);
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time.month_day = integer8(rtc->RDAYCNT.BYTE);
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time.month = integer8(rtc->RMONCNT.BYTE);
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time.year = integer16(rtc->RYRCNT.WORD);
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time.week_day = rtc->RWKCNT;
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return time;
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}
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