Re: Update RTC automatically

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Dear Jurt,

On 26 Mar 2002 at 17:17, Kurt Roeckx wrote:

> On Tue, Mar 26, 2002 at 01:01:00PM +0100, TAJTHY Tamás wrote:

> > I'd like to set up the system to update the RTC based on the system clock
> > (set by an external source) automatically. I found that with the do_adjtimex
> > function this can be done. I have to clear the STA_UNSYNC bit in the .status
> > filed of the timex structure. It seems that the .maxerror field also has to
> > be set to 0 also, because if I don't set it to 0 the STA_UNSYNC bit will be
> > set by the system automatically.
> >
> > Can anyone help me how this should be implemented?
> 
> Have you considered doing it from userspace instead?  hwclock
> should do.

THX for Your answer! I synchronize the system clock to an external source so 
I use do_adjtimex to do this gently (not skipping or repeating seconds). It 
seems for me that this function is capable to sync the system time with RTC 
periodically. If I read the code carefully enough this function used for NTP 
protocol implementation which is almost what I'm trying to do.

The hwclock also a good issue, but it is not able to modify the system clock 
gently.

THX && Good byte!
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