Just a suggestion as I don't have your device.
If you can dispense with the rs-232-> usb , then why not try
connecting to DCD and using the SHM driver in conjunction
with Jonathan Buzzards DCF radioclock daemon.
http://www.buzzard.me.uk/jonathan/radioclock.html
There is no needfor any particular baud rate to be set
as there is no host -> refclock comms. You would probably
need to check the polarity of the signal as it uses assert
to start the timing of interrupts and signal pulse length
on the DCD pin.
regards,
Mike
Reinhold wrote:
Hello Martin,
If I remember correctly we have already discussed this on the phone, and you
are using a RS-232-to-USB converter.
yes, we do
While this may work with a device which transmits an ASCII string (in spite
of the jitter introduced by the USB bus) I doubt NTP's RAW_DCF driver would
at all be able to decode the raw DCF77 time marks properly after they have
been transferred via USB.
I have to try this because we want to discuss all possibilities. The
jitter is no problem for our needs, if NTP accept this source
Reinhold
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