[LinuxPPS] LinuxPPS with Atom driver problems

[Rodolfo Giometti]

On Wed, Aug 30, 2006 at 10:02:48AM +0100, Tom Playford wrote:
> Hello All,
> 
> I've managed to get both Linux 2.6.17.9 complied with LinuxPPS
> (latest, from 'Git') and ntpd (4.2.2p3) complied with the Atom patch.
> 
> When I boot up I see the proc interface with the four 8250 drivers. I
> have a PPS source plugged into ttyS0 but at first I didn't see any
> activity on /proc/pps/00/assert or /proc/pss/00/clear. I got a little
> desperate and started fiddling, I tried 'cat /dev/ttyS0', and
> suddently /proc/pps/00/assert started incrementing. Is this a feature
> or a bug?

The serial line doesn't start receiving interrupts until the device is
opened.

> I'm not having much luck getting NTP to recieve anything from PPS,
> reach is 0. Could the problem descibed above account for this? Anyone
> got any ideas?

Verify that when you run the NTP daemon the GPS antenna starts sending
PPS signal.

Ciao,

Rodolfo

-- 

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