Crate hwclock [] [src]

Hardware clock handling for linux

The hwclock module provides a thin wrapper around kernel structs and ioctls to retrieve the current time from the hardware clock and convert it from and to a valid chrono data structure.

extern crate chrono;
extern crate hwclock;

fn main() {
    use hwclock::HwClockDev;

    let rtc = HwClockDev::open("/dev/rtc0").expect("could not open rtc clock");

    println!("{:?}", rtc);

    let time = rtc.get_time().expect("could not read rtc clock");
    println!("{:?}", time);

    println!("Setting clock ahead 30 seconds");
    let mut ct: chrono::NaiveDateTime = time.into();
    ct += chrono::Duration::seconds(30);

    // convert back to RtcTime and set it
    let ntime = ct.into();
    rtc.set_time(&ntime).expect("could not set rtc clock");

    println!("Rereading...");
    let time2 = rtc.get_time().expect("could not read rtc clock");

    println!("{:?}", time2);
}

Structs

HwClockDev

Hardware clock

RtcTime

Linux struct rtc_time wrapper

Constants

YEAR_EPOCH

Basic epoch for dates.