Skip to main content

Real-Time Clock (rtc)

Real-time clock.

Device Type​

DEVICE_TYPE_RTC

Structure​

struct rtc_time_t {
    int second, minute, hour;
    int week, day, month, year;
};

struct rtc_t {
    char * name;
    int (*settime)(struct rtc_t * rtc, struct rtc_time_t * time);
    int (*gettime)(struct rtc_t * rtc, struct rtc_time_t * time);
    void * priv;
};

Key API​

FunctionDescription
search_rtc(name)Find RTC by name
register_rtc(rtc, drv)Register an RTC
unregister_rtc(rtc)Unregister an RTC
rtc_settime(rtc, time)Set time
rtc_gettime(rtc, time)Get time

Description​

Real-time clock interface. Maintains wall-clock time across system reboots via battery-backed hardware. Provides conversion between Unix epoch seconds and structured RTC time.