SystemBase Eddy DK, Руководство программиста

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Eddy DK Programmer Guide
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6.9 RTC Function
Eddy CPU provides separate RTC(Real Time Clock) in DK.
Date and time can be configured through program or with Date and rdate provided by Busybox.
Sample program “Eddy_Apps/test_rtc.c” uses RTC device so users can refer to this source for developing
programs.
RTC_SET_TIME
Function Configures date and time in RTC device
Format void ioctl(int fd, RTC_SET_TIME, struct tm *tm);
Parameter fd Handle to RTC device(“/dev/rtc0”)
tm Pointer to struct that stores date and time to be
configured. Compatible with struct tm for Linux
standard time interface.
Returns None
Notice
RTC_RD_TIME
Function Reads date and time from RTC device
Format void ioctl(int fd, RTC_RD_TIME, struct tm *tm);
Parameter fd Handle to RTC device(“/dev/rtc0”)
tm Pointer to struct that will store date and time read.
Compatible with struct tm for Linux standard time
interface.
Returns None
Notice