>I'm not sure whether the NMEA driver attempts to send anything /to/ the >GPS device. If not, three lines might to (ground, TX from GPS, PPS), >otherwise four lines are required. If you want to take USB power from the >server (as I now do), it's five lines minimum.
The driver expects the data to arrive without any help. That works with all the NMEA devices I've worked with. You set them up ahead of time by sending them a sequence of commands which differ from device to device. The driver does send "$PMOTG,RMC,0000*1D\r\n" every poll interval, with a comment about some Motorola device needing it. (That's one per poll interval rather than one per second. I don't expect it to work very well.) -- These are my opinions, not necessarily my employer's. I hate spam. _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions