On Sun, Apr 28, 2013 at 3:41 PM, Igor Mozolevsky <[email protected]>wrote:

> On 28 April 2013 13:48, Igor Mozolevsky <[email protected]> wrote:
>
> <snip>
>
> > # cu -l /dev/cuau0 -s 4800
> > Connected
> >
> > and after the 'Connected' there is just silence (should be getting
> > $GPGLL every 200ms from the GPS unit)...
>
> > Obviously I'm missing something, just can't figure out what it is...
>
> I should add that when I connect through uplcom on cuaU0, the messages
> come through (and ntpd can use them) but I need the UART connection
> for the PPS sync...
>
>
> --
> Igor M.
>

Igor,

Even though you have only a single physical port, most systems have at
least a dual serial UART controller, though only one mat have a DB-9
connector attached. Can you look at /var/run/dmesg.boot and confirm that
only one UART is is found? E.g.:
uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
uart1: <16550 or compatible> port 0x2f8-0x2ff irq 3 on acpi0
(Note that this system has only a single DB-9 connector for uart0. I
suspect that there is a header for uart1 on the board, but I've never had a
need to check.
-- 
R. Kevin Oberman, Network Engineer
E-mail: [email protected]
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