Function validatePPSEvent

phc/pps_source.go:219–228

(eventTimestamp time.Time, dstDevice DeviceController)

}

func validatePPSEvent(eventTimestamp time.Time, dstDevice DeviceController) error {
	dstTs, err := dstDevice.Time()
	if err != nil {
		return fmt.Errorf("error getting dst timestamp")
	}
	if dstTs.Sub(eventTimestamp).Abs().Seconds() > 1 {
		return fmt.Errorf("stale (over 1s) event: PPS event was %+v before current time on dst %+v", dstTs.Sub(eventTimestamp), dstTs.UnixNano())
	}
	return nil
}

// PPSClockSync adjusts the frequency of the destination device based on the PPS from the ppsSource
func PPSClockSync(pi ServoController, srcTimestamp time.Time, dstEventTimestamp time.Time, dstDevice DeviceController) error {