21 lines
480 B
C
21 lines
480 B
C
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/* deshab/rtc.h - CMOS RTC 时钟读取
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*
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* 整合 desktop_app.h 的 da_rtc_time。读取 CMOS RTC 时/分（BCD -> 二进制）。
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*/
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#ifndef DESHAB_RTC_H
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#define DESHAB_RTC_H
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#include "types.h"
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#include "portio.h"
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static inline void dsb_rtc_time(u8 *h, u8 *m) {
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dsb_outb(0x70, 4);
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*h = dsb_inb(0x71);
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dsb_outb(0x70, 2);
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*m = dsb_inb(0x71);
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*h = (u8)((*h >> 4) * 10 + (*h & 0xF));
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*m = (u8)((*m >> 4) * 10 + (*m & 0xF));
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}
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#endif /* DESHAB_RTC_H */
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