hardware-clock synchronization

fariborz · 04-28-2008, 10:59 PM

hi

How do i synchronize hardware-clock with system-clock without using 'hwclock' and 'NTP'?
Is there any way to do this job with programming?

jf.argentino · 04-29-2008, 12:59 AM

Look for adjtimex function

jf.argentino · 04-29-2008, 01:07 AM

No sorry, adjtimex is for system clock (as NTP, NTP doesn't deal with your RTC).
Take a look to the ioctl provided for /dev/rtc, or download "hwclock" sources to see how it does the job.

archtoad6 · 05-02-2008, 07:54 AM

2 Q's:
OP,
I'm curious (not critical), why the objection to hwclock?
(Does it relate to:)

Anyone,
Is there anyway to get the actual, the raw, BIOS h/w clock time from the CLI? In other words to verify that it is set to UTC as I intend & have told hwclock?

I have read the hwclock man page & I don't see any way to do this. If I am reading it correctly, I tell hwclock which I think it, the BIOS clock, is set to, but there is no way to verify that my intentions have been carried out (& not changed), short of rebooting & checking the BIOS Setup.