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| From: | Neal Dillman |
| Subject: | Adafruit USB and PPS |
| Date: | Mon, 25 Nov 2019 21:14:08 +0000 |
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Hello gpsd-ers, I have what appears to be an unusual configuration that trying to make work:
There is no problem making the GPS work, but PPS is not working. I understand that PPS over USB has limitations, but it will be much more accurate than without the PPS. Bearing that in mind, I’ve tried several things, but no success. The kernel seems to register line discipline correctly: [ 5.160413] pps_core: LinuxPPS API ver. 1 registered [ 5.160423] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <address@hidden> [ 5.193429] pps_ldisc: PPS line discipline registered [ 5.194848] pps pps0: new PPS source usbserial4 [ 5.194979] pps pps0: source "/dev/ttyUSB4" added Stock gpsd (v3.16) has issues trying PPS: root@ATIS-Box:/home/pi/gpsd-3.19# gpsd -D 5 -N -n /dev/ttyUSB4 /dev/pps0 gpsd:INFO: launching (Version 3.16) gpsd:IO: opening IPv4 socket gpsd:IO: opening IPv6 socket gpsd:INFO: listening on port gpsd gpsd:PROG: NTP: shmat(0,0,0) succeeded, segment 0 gpsd:PROG: NTP: shmat(32769,0,0) succeeded, segment 1 gpsd:PROG: NTP: shmat(65538,0,0) succeeded, segment 2 gpsd:PROG: NTP: shmat(98307,0,0) succeeded, segment 3 gpsd:PROG: NTP: shmat(131076,0,0) succeeded, segment 4 gpsd:PROG: NTP: shmat(163845,0,0) succeeded, segment 5 gpsd:PROG: NTP: shmat(196614,0,0) succeeded, segment 6 gpsd:PROG: NTP: shmat(229383,0,0) succeeded, segment 7 gpsd:PROG: successfully connected to the DBUS system bus gpsd:PROG: shmget(0x47505344, 8928, 0666) for SHM export succeeded gpsd:PROG: shmat() for SHM export succeeded, segment 262152 gpsd:INFO: stashing device /dev/ttyUSB4 at slot 0 gpsd:PROG: no /etc/gpsd/device-hook present, skipped running ACTIVATE hook gpsd:INFO: opening GPS data source type 3 at '/dev/ttyUSB4' gpsd:INFO: speed 115200, 8N1 gpsd:INFO: gpsd_activate(2): activated GPS (fd 6) gpsd:PROG: PPS:/dev/ttyUSB4 chrony socket /var/run/chrony.ttyUSB4.sock doesn't exist gpsd:PROG: KPPS:/dev/ttyUSB4 checking /sys/devices/virtual/pps/pps0/path, /dev/ttyUSB4 gpsd:INFO: KPPS:/dev/ttyUSB4 RFC2783 path:/dev/pps0, fd is 7 gpsd:INFO: KPPS:/dev/ttyUSB4 pps_caps 0x1133 gpsd:INFO: KPPS:/dev/ttyUSB4 have PPS_CANWAIT gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS will be used gpsd:PROG: PPS:/dev/ttyUSB4 thread launched gpsd:INFO: PPS:/dev/ttyUSB4 ntpshm_link_activate: 1 gpsd:INFO: device /dev/ttyUSB4 activated gpsd:INFO: stashing device /dev/pps0 at slot 1 gpsd:PROG: no /etc/gpsd/device-hook present, skipped running ACTIVATE hook gpsd:PROG: switch_driver(PPS) called... gpsd:PROG: selecting PPS driver... gpsd:PROG: PPS:/dev/pps0 chrony socket /var/run/chrony.pps0.sock doesn't exist gpsd:INFO: KPPS:/dev/pps0 RFC2783 path:/dev/pps0, fd is 8 gpsd:INFO: KPPS:/dev/pps0 pps_caps 0x1133 gpsd:INFO: KPPS:/dev/pps0 have PPS_CANWAIT gpsd:INFO: KPPS:/dev/pps0 kernel PPS will be used gpsd:PROG: PPS:/dev/pps0 thread launched gpsd:INFO: PPS:/dev/pps0 ntpshm_link_activate: 0 gpsd:INFO: device /dev/pps0 activated gpsd:INFO: KPPS:/dev/pps0 gps_fd:-2 not a tty gpsd:INFO: KPPS:/dev/pps0 gps_fd:-2 not a tty gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Interrupted system call gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Interrupted system call gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Interrupted system call gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Interrupted system call gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Interrupted system call gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Interrupted system call gpsd:INFO: running with effective group ID 20 gpsd:INFO: running with effective user ID 113 gpsd:INFO: startup at 2019-11-25T21:12:10.000Z (1574716330) gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Connection timed out gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Connection timed out gpsd:INFO: speed 4800, 8N1 gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Connection timed out gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Connection timed out gpsd:INFO: speed 9600, 8N1 gpsd:PROG: switching to match packet type 1: $GPGGA,211214.000,3838.9275,N,12129.2888,W,1,11,0.82,-2.0,M,-22.8,M,,*71\x0d\x0a gpsd:PROG: switch_driver(NMEA0183) called... gpsd:PROG: selecting NMEA0183 driver... gpsd:INFO: /dev/ttyUSB4 identified as type NMEA0183, 9 sec @ 9600bps gpsd:PROG: => Probing for Garmin NMEA gpsd:IO: => GPS: $PGRMCE*0E\x0d\x0a gpsd:IO: <= GPS: $GPGGA,211214.000,3838.9275,N,12129.2888,W,1,11,0.82,-2.0,M,-22.8,M,,*71 gpsd:WARN: can't use GGA time until after ZDA or RMC has supplied a year. gpsd:PROG: GPGGA sentence timestamped 211214.00. gpsd:PROG: GPGGA starts a reporting cycle. gpsd:PROG: => Probing for SiRF gpsd:IO: => GPS: $PSRF100,0,9600,8,1,0*0C\x0d\x0a gpsd:IO: <= GPS: $GPGSA,A,3,25,03,11,26,23,01,14,31,22,32,16,,1.13,0.82,0.78*05 gpsd:PROG: GPGSA sets mode 3 gpsd:PROG: => Probing for FV-18 gpsd:IO: => GPS: $PFEC,GPint*58\x0d\x0a gpsd:IO: <= GPS: $GPGSV,4,1,13,22,75,315,26,31,56,060,28,03,51,315,19,01,48,233,16*72 gpsd:PROG: Partial satellite data (1 of 4). gpsd:PROG: => Probing for Trimble Copernicus gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Connection timed out gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout Connection timed out …. I recompiled gpsd (v3.19), and the results are similar: root@ATIS-Box:/home/pi/gpsd-3.19# ./gpsd -D 5 -N -n /dev/ttyUSB4 /dev/pps0 gpsd:INFO: launching (Version 3.19) gpsd:IO: opening IPv4 socket gpsd:IO: opening IPv6 socket gpsd:INFO: listening on port gpsd gpsd:PROG: NTP: shmat(0,0,0) succeeded, segment 0 gpsd:PROG: NTP: shmat(32769,0,0) succeeded, segment 1 gpsd:PROG: NTP: shmat(65538,0,0) succeeded, segment 2 gpsd:PROG: NTP: shmat(98307,0,0) succeeded, segment 3 gpsd:PROG: NTP: shmat(131076,0,0) succeeded, segment 4 gpsd:PROG: NTP: shmat(163845,0,0) succeeded, segment 5 gpsd:PROG: NTP: shmat(196614,0,0) succeeded, segment 6 gpsd:PROG: NTP: shmat(229383,0,0) succeeded, segment 7 gpsd:ERROR: shmget(0x47505344, 20808, 0666) for SHM export failed: Invalid argument gpsd:INFO: stashing device /dev/ttyUSB4 at slot 0 gpsd:PROG: no /etc/gpsd/device-hook present, skipped running ACTIVATE hook gpsd:INFO: SER: opening GPS data source type 3 at '/dev/ttyUSB4' gpsd:INFO: SER: speed 115200, 8N1 gpsd:PROG: Probing "Garmin USB binary" driver... gpsd:PROG: Probe not found "Garmin USB binary" driver... gpsd:PROG: Probing "GeoStar" driver... gpsd:PROG: Sent GeoStar packet id 0xc1 gpsd:IO: SER: => GPS: 5053474700c100010000000050924746 gpsd:PROG: Probe not found "GeoStar" driver... gpsd:PROG: Probing "Trimble TSIP" driver... gpsd:INFO: SER: speed 9600, 8O1 gpsd:INFO: SER: speed 115200, 8N1 gpsd:PROG: Probe not found "Trimble TSIP" driver... gpsd:PROG: Probing "iSync" driver... gpsd:INFO: SER: speed 9600, 8N1 gpsd:IO: SER: => GPS: @@@@\x0d\x0aMAW0C0B\x0d\x0a gpsd:INFO: SER: speed 115200, 8N1 gpsd:PROG: Probe not found "iSync" driver... gpsd:PROG: no probe matched... gpsd:INFO: gpsd_activate(2): activated GPS (fd 5) gpsd:PROG: PPS:/dev/ttyUSB4 chrony socket /var/run/chrony.ttyUSB4.sock doesn't exist gpsd:PROG: KPPS:/dev/ttyUSB4 checking /sys/devices/virtual/pps/pps0/path, /dev/ttyUSB4 gpsd:INFO: KPPS:/dev/ttyUSB4 RFC2783 path:/dev/pps0, fd is 6 gpsd:INFO: KPPS:/dev/ttyUSB4 pps_caps 0x1133 gpsd:INFO: KPPS:/dev/ttyUSB4 have PPS_CANWAIT gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS will be used gpsd:PROG: PPS:/dev/ttyUSB4 thread launched gpsd:INFO: PPS:/dev/ttyUSB4 ntpshm_link_activate: 1 gpsd:INFO: device /dev/ttyUSB4 activated gpsd:INFO: stashing device /dev/pps0 at slot 1 gpsd:PROG: no /etc/gpsd/device-hook present, skipped running ACTIVATE hook gpsd:PROG: switch_driver(PPS) called... gpsd:PROG: selecting PPS driver... gpsd:PROG: PPS:/dev/pps0 chrony socket /var/run/chrony.pps0.sock doesn't exist gpsd:INFO: KPPS:/dev/pps0 RFC2783 path:/dev/pps0, fd is 7 gpsd:INFO: KPPS:/dev/pps0 pps_caps 0x1133 gpsd:INFO: KPPS:/dev/pps0 have PPS_CANWAIT gpsd:INFO: KPPS:/dev/pps0 kernel PPS will be used gpsd:PROG: PPS:/dev/pps0 thread launched gpsd:PROG: KPPS:/dev/pps0 gps_fd:-2 not a tty, can not use TIOMCIWAIT gpsd:INFO: PPS:/dev/pps0 ntpshm_link_activate: 0 gpsd:INFO: device /dev/pps0 activated gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout unknown error gpsd:INFO: running with effective group ID 20 gpsd:INFO: running with effective user ID 65534 gpsd:INFO: startup at 2019-11-25T21:08:14.000Z (1574716094) gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/ttyUSB4 kernel PPS timeout unknown error gpsd:INFO: KPPS:/dev/pps0 kernel PPS timeout unknown error … It seems like this should work, but I cannot seem to get the OS to see PPS [on the Ring Indicator]. I have looked up every tutorial, suggestion, and document on the topic I could find on the web, but no luck. The end goal is to have the
GPS and PPS running through NTPD. Thanks in advance for any help, pointers, etc. Regards, Neal |
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