Hi, I'm trying to build a program for rtl which will be used for time-stamping of events. I get notified of any event through the ACK interrupt on the parallell port. The precision isn't too critical, but it has to be < 1 ms. Now, I need some way to keep the system time on track.. for this I want to use GPS transmitting standard NMEA sentences and a PPS signal connected to a serial port. To syncronize the clock with the GPS, I was planning to use the ntpd, and that worked fine with only the NMEA sentences (with very poor precision though), but for the PPS to work, I need to install the PPSkit (I think..). Problem is, that I can't find a patch for realtime linux.. I can't use both the rtl & pps patch on the same kernel.. Have anybody ever done that before, or know about some clever tricks so that I can use PPSkit with rtl? Or even better, some way of doing it without using PPSkit? The GPS is a Garmin GPS31HV and I'm running RealTime Linux 3.1 (kernel 2.4.4) and NTPD v. 4.1.1 PPS signal is connected through a level converter to the DCD pin on the same serial port as the NMEA sentences..
regards, Trond -- [rtl] --- To unsubscribe: echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED] -- For more information on Real-Time Linux see: http://www.rtlinux.org/
