On 2011-08-26, David J Taylor <[email protected]> wrote: > "A C" <[email protected]> wrote: > >> I'll still have to put a serial monitor on the line and try to figure >> out what is being transmitted towards the GPS when the PPS driver is >> active. > > I noticed that when updating from ntpd 4.2.7p97 to ntpd 4.2.7p206, > I noticed that the newer version is sending some RS-232 data to the > GPS soon after the PPS signal has started. I filed a bug report about > this: > > http://bugs.ntp.org/show_bug.cgi?id=1999
http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver20.html states: "The driver will send a $PMOTG,RMC,000*1D<cr><lf> comand each poll interval. This is not needed on most GPS receivers because they automatically send $GPRMC every second, but helps a Motorola GPS receiver that is otherwise silent. NMEA devices ignore commands they do not understand." Searching for "PMOTG", using the doc.ntp.org search facility, reveals that the same text is present on: http://doc.ntp.org/4.1.2/drivers/driver20.html http://doc.ntp.org/4.2.0/drivers/driver20.html http://doc.ntp.org/4.2.4/drivers/driver20.html http://doc.ntp.org/4.2.6/drivers/driver20.html http://doc.ntp.org/4.2.6p1/drivers/driver20.html http://doc.ntp.org/4.2.6p2/drivers/driver20.html http://doc.ntp.org/4.2.6p3/drivers/driver20.html So this is not a new addition to ntp-dev. -- Steve Kostecke <[email protected]> NTP Public Services Project - http://support.ntp.org/ _______________________________________________ questions mailing list [email protected] http://lists.ntp.org/listinfo/questions
