PDS8 GPS engine,3 goes to standby after 150 / 160 seconds, no fix | Telit Cinterion IoT Developer Community
January 21, 2019 - 2:15pm, 1849 views
Dear all,
Currently, I am trying to get a board with a PDS8 to work with GPS. First some information:
Cinterion PDS8 REVISION 03.001 A-REVISION 00.000.13 OK
+CCLK: "19/01/21,12:56:27"
The clock is set to UTC
Settings for the gps:
AT^SGPSC? ^SGPSC: "Engine","0" ^SGPSC: "Nmea/Output","on" ^SGPSC: "Nmea/Freq","1" ^SGPSC: "Nmea/Data","GGA,GSA,GSV,RMC,VTG" ^SGPSC: "Nmea/Interface","usb5" ^SGPSC: "Power/Antenna","off" ^SGPSC: "****/Antenna","0" ^SGPSC: "Assist/Address","","","" ^SGPSC: "Assist/Data" ^SGPSC: "Assist/Connection"
When enabling the engine to **** 3, I see the output below,
/dev/ttyACM5 9600 8N1 NMEA0183> ┌──────────────────────────────────────────────────────────────────────────────┐ │Time: n/a Lat: n/a Lon: n/a │ └───────────────────────────────── Cooked PVT ─────────────────────────────────┘ ┌──────────────────────────────────────────────────────────────────────────────┐ │ GPGGA GPGSA GPGSV GPRMC GPVTG │ └───────────────────────────────── Sentences ──────────────────────────────────┘ ┌──────────────────┐┌────────────────────────────┐┌────────────────────────────┐ │Ch PRN Az El S/N ││Time: ││Time: │ │ 0 5 275 4 0 ││Latitude: ││Latitude: │ │ 1 8 123 54 0 ││Longitude: ││Longitude: │ │ 2 10 56 41 0 ││Speed: ││Altitude: │ │ 3 11 156 24 0 ││Course: ││Quality: 0 Sats: │ │ 4 13 268 51 0 ││Status: V FAA: N ││HDOP: │ │ 5 15 317 51 34 ││MagVar: ││Geoid: │ │ 6 16 90 6 0 │└─────────── RMC ────────────┘└─────────── GGA ────────────┘ │ 7 18 135 25 0 │┌────────────────────────────┐┌────────────────────────────┐ │ 8 20 27 50 0 ││****: A 1 ││UTC: RMS: │ │ 9 21 1 32 0 ││Sats: ││MAJ: MIN: │ │10 22 90 0 0 ││DOP: H= V= P= ││ORI: LAT: │ │11 24 324 14 0 ││PPS offset: ││LON: ALT: │ └────── GSV ───────┘└──────── GSA + PPS ─────────┘└─────────── GST ────────────┘ (25) $GPRMC,,V,,,,,,,,,,N*53\x0d\x0a (25) $GPVTG,,T,,M,,N,,K,N*2C\x0d\x0a (28) $GPGGA,,,,,,0,,,,M,,M,,*66\x0d\x0a (30) $GPGSA,A,1,,,,,,,,,,,,,,,*1E\x0d\x0a (62) $GPGSV,4,1,16,05,04,275,,08,54,123,,10,41,056,,11,24,156,*70\x0d\x0a (64) $GPGSV,4,2,16,13,51,268,,15,51,317,33,16,06,090,,18,25,135,*76\x0d\x0a (64) $GPGSV,4,3,16,20,50,027,,21,32,001,,22,00,090,,24,14,324,38*7C\x0d\x0a (62) $GPGSV,4,4,16,27,47,080,,28,44,227,,30,45,198,,32,00,090,*77\x0d\x0a (25) $GPRMC,,V,,,,,,,,,,N*53\x0d\x0a (25) $GPVTG,,T,,M,,N,,K,N*2C\x0d\x0a (28) $GPGGA,,,,,,0,,,,M,,M,,*66\x0d\x0a (30) $GPGSA,A,1,,,,,,,,,,,,,,,*1E\x0d\x0a (62) $GPGSV,4,1,16,05,04,275,,08,54,123,,10,41,056,,11,24,156,*70\x0d\x0a (64) $GPGSV,4,2,16,13,51,268,,15,51,317,33,16,06,090,,18,25,135,*76\x0d\x0a (64) $GPGSV,4,3,16,20,50,027,,21,32,001,,22,00,090,,24,14,324,38*7C\x0d\x0a (62) $GPGSV,4,4,16,27,47,080,,28,44,227,,30,45,198,,32,00,090,*77\x0d\x0a (25) $GPRMC,,V,,,,,,,,,,N*53\x0d\x0a (25) $GPVTG,,T,,M,,N,,K,N*2C\x0d\x0a (28) $GPGGA,,,,,,0,,,,M,,M,,*66\x0d\x0a (30) $GPGSA,A,1,,,,,,,,,,,,,,,*1E\x0d\x0a (62) $GPGSV,4,1,16,05,04,275,,08,54,123,,10,41,056,,11,24,156,*70\x0d\x0a (64) $GPGSV,4,2,16,13,51,268,,15,51,317,34,16,06,090,,18,25,135,*71\x0d\x0a (62) $GPGSV,4,3,16,20,50,027,,21,32,001,,22,00,090,,24,14,324,*77\x0d\x0a (62) $GPGSV,4,4,16,27,47,080,,28,44,227,,30,45,198,,32,00,090,*77\x0d\x0a (25) $GPRMC,,V,,,,,,,,,,N*53\x0d\x0a (25) $GPVTG,,T,,M,,N,,K,N*2C\x0d\x0a
When using gpsmon, I will not get a fix and after approximately 150 seconds, the engine turns off and I need to reenable it. I did this a couple of *****, but after the same amount of time it will turn off again. All help is appreciated to get the GPS to work.
FYI: the test is conducted outside with a direct line of sight to the sky.
Thank you in advance.
Bob Peters
Hello,
Leaving out wrong antenna connection or bad antenna I can see that your configuration is for passive antenna. Maybe your antenna is active and ***** settings for active antenna. Are you ***** any DSB or developer board or your own hardware?
Best regards,
Bartłomiej
Hello,
We are using a passive antenna on our own hardware board. Before we go into the hardware details. Is it normal (expected behavior) that the engine goes off by itself if it cannot get a fix? Can I disable that?
What are ways to verify if the signal strength is reasonable?
Best regards,
Bob
Hello,
Yes, it is a normal behavior that GPS is switched off after some time if there's no fix. You can also look here for a solution: https://iot-developer.thalesgroup.com/tutorial/ehs8-and-gps-receiver
Here you can find the reference design for PDS8: https://iot-developer.thalesgroup.com/documentation/example-schematic-ph...
Regards,
Bartłomiej
Thank you this worked for me to use a midlet that keeps the gps running!
Thanks for the feedback.