[time-nuts] Lady Heather Question

John Miles jmiles at pop.net
Mon Feb 2 00:33:16 UTC 2009


I use the normal Win32 device-communications API (via CreateFile/ReadFile).
Same serial-interface module that I wrote to talk to Prologix GPIB-USB
dongles.    It should support any COM port number you give it.

The graph ends up looking a lot neater with 10-second updates than with
1-second updates -- I wonder if that should be the default.  The PPS and ref
traces in particular seem to break up a lot at 1-second timescales.

-- john, KE5FX

> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com]On
> Behalf Of Magnus Danielson
> Sent: Sunday, February 01, 2009 4:18 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Lady Heather Question
>
>
> John Miles skrev:
> > The DOS version had a bug that caused it to ignore the /2 altogether (it
> > hardwired the COM port back to 1 after parsing the command-line args).
> > That's fixed in the Windows build.
>
> Do you use Windows serial line routines or maintain Marks more direct
> access? For a Windows port the OS serial line routines should be the
> right thing. We should avoid having to force the configuration like I
> had to do initially.
>
> Cheers,
> Magnus
>
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