After reading the manpages for ntpd(8), ntpd.conf(5), & nmeaattach(8),
I thought I had enough information to use a USB GPS device as a time
source.
In /etc/ntpd.conf, the only line left enabled is:
sensor cuaU0
In /etc/rc.conf.local, the only lines are:
nmeaattach cuaU0
ntpd_flags=""
Yet upon reboot, I see the following message displayed during initialization:
nmeaattach: open: /dev/cuaU0: Device busy
I can observe the NMEA sentence traffic through cu(1), so it is
unclear what I have missed. Any insight would be appreciated.
Thanks.
Jim
