Re: Setting an IOC clock from the vxWorks shell

[Andrew Johnson <anj@aps.anl.gov>]

J. Frederick Bartlett wrote:
>   Recently we have been having problems with IOC timestamp 
> synchronization on our EPICS network. The timing master  is unable to 
> obtain timing information from our ntp server -- see Geoff Savage's 
> techtalk note on 15 Feb 2007. While we are finding the solution to that 
> problem, I would like to make one of our IOC's a timing master and set 
> its clock to approximately the correct time. Does anyone know of a 
> method of setting the IOC's clock from the vxWorks shell?

Unfortunately there's no way to do that with the current vxWorks IOC 
clock implementation.  The code for the vxWorks IOC clock in R3.14 is 
found in base/src/libCom/osi/os/vxWorks/iocClock.c - look at the 
iocClockInit() and syncNTP() routines for starters.  That's also where 
you'll see how we find the NTP server to use.

- Andrew
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