Gpsd: Difference between revisions
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== Grove GPS, for Kali == | == Grove GPS, for Kali == | ||
I am putting a GroveGPS (from M5Stack) on a Pi 5, so it can talk to the Kismet data logger. See also [[WiFi Wireless Projects]]. | I am putting a GroveGPS (from M5Stack) on a Pi 5, so it can talk to the Kismet data logger. See also [[WiFi Wireless Projects]]. I tried using the GrovePi Zero hat and gave up on it, currently I have the GPS jumpered directly into the GPIO port on the Pi 5. | ||
The blue led in the GPS module will be blinking when it's sending out NMEA data. | |||
I am not seeing any output, I tried swapping TX and RX and I tried 9600 and 115200. But even if I got the bit rate wrong I should still see something. I tried using "minicom -D /dev/ttyAMA10". | |||
'''I did NOT have to disable console login!''' There is a separate UART on a '''separate connector''' on the Pi 5 (which is compatible with the Pi Pico Debug Module) | |||
I had to add a line near the start of /boot/config.txt "dtoverlay=uart0" and then reboot. There is now a second UART device, /dev/ttyAMA0. | |||
After sorting out the wiring and enabling the port, I can see clean NMEA strings in minicom on '''/dev/ttyAMA0''' not AMA10 | |||
With that out of the way I can set up gpsd. | |||
=== GPSd setup === | |||
apt install gpsd gpsd-clients | apt install gpsd gpsd-clients | ||
systemctl enable gpsd.service | systemctl enable gpsd.service | ||
Edit /etc/default/gpsd to specify settings. DEVICE | Edit '''/etc/default/gpsd''' to specify settings. DEVICE is /dev/ttyAMA0 and speed should be set to 9600 normally but gpsd can figure that part out. Finally, start the daemon and see if it's getting data. | ||
gpspipe -r | |||
┌──(kali㉿kali-raspberry-pi5)-[~] | |||
└─$ gpspipe -r | |||
{"class":"VERSION","release":"3.25","rev":"3.25","proto_major":3,"proto_minor":15} | |||
{"class":"DEVICES","devices":[{"class":"DEVICE","path":"/dev/ttyAMA0","activated":"2024-12-17T06:09:15.496Z","native":0,"bps":9600,"parity":"N","stopbits":1,"cycle":1.00}]} {"class":"WATCH","enable":true,"json":false,"nmea":true,"raw":0,"scaled":false,"timing":false,"split24":false,"pps":false} | |||
$GNGGA,060915.000,4610.46144,N,12350.28108,W,1,09,1.2,2.3,M,0.0,M,,*66 | |||
$GNGLL,4610.46144,N,12350.28108,W,060915.000,A,A*58 | |||
$GPGSA,A,3,05,20,25,29,,,,,,,,,2.4,1.2,2.1*3F | |||
$BDGSA,A,3,14,28,33,37,42,,,,,,,,2.4,1.2,2.1*28 | |||
$GPGSV,3,1,12,05,59,084,12,11,12,064,,12,08,164,,15,06,143,*73 | |||
$GPGSV,3,2,12,18,45,255,,20,32,050,19,23,08,199,,25,36,191,18*75 | |||
$GPGSV,3,3,12,26,28,308,,28,05,257,,29,83,013,11,31,10,283,*78 | |||
$BDGSV,3,1,09,11,19,085,,14,39,105,25,21,07,028,,23,08,198,*6D | |||
Ah joy! | |||
== Python integration == | == Python integration == |
Latest revision as of 06:11, 17 December 2024
What and why
gpsd is a service that listens to one or more gps receivers and makes the received data available over a network connection. It understands a wide variety of binary protocols.
What you get with gpsd
Besides the daemon "gpsd", of course...
In /usr/local/bin, you will find
- lcdgps
- gpxlogger
- gpspipe
- gpsmon
- gpsdecode
- gpsctl
- cgps
Position
Time
I will be running gpsd in a docker container on Bellman to set up my Magnavox reference station.
docker pull forcedinductionz/docker-gpsd docker run -it -p 2947:2947 --device=/dev/ttyAMA0 forcedinductionz/docker-gpsd -D2 /dev/ttyAMA0
By using docker I avoid installation issues of getting it going on a Mac. I still have to configure it. Not able to do that at the moment. (My GPS receiver is packed in a box.)
Grove GPS, for Kali
I am putting a GroveGPS (from M5Stack) on a Pi 5, so it can talk to the Kismet data logger. See also WiFi Wireless Projects. I tried using the GrovePi Zero hat and gave up on it, currently I have the GPS jumpered directly into the GPIO port on the Pi 5.
The blue led in the GPS module will be blinking when it's sending out NMEA data.
I am not seeing any output, I tried swapping TX and RX and I tried 9600 and 115200. But even if I got the bit rate wrong I should still see something. I tried using "minicom -D /dev/ttyAMA10".
I did NOT have to disable console login! There is a separate UART on a separate connector on the Pi 5 (which is compatible with the Pi Pico Debug Module)
I had to add a line near the start of /boot/config.txt "dtoverlay=uart0" and then reboot. There is now a second UART device, /dev/ttyAMA0.
After sorting out the wiring and enabling the port, I can see clean NMEA strings in minicom on /dev/ttyAMA0 not AMA10
With that out of the way I can set up gpsd.
GPSd setup
apt install gpsd gpsd-clients systemctl enable gpsd.service
Edit /etc/default/gpsd to specify settings. DEVICE is /dev/ttyAMA0 and speed should be set to 9600 normally but gpsd can figure that part out. Finally, start the daemon and see if it's getting data.
gpspipe -r ┌──(kali㉿kali-raspberry-pi5)-[~] └─$ gpspipe -r {"class":"VERSION","release":"3.25","rev":"3.25","proto_major":3,"proto_minor":15} {"class":"DEVICES","devices":[{"class":"DEVICE","path":"/dev/ttyAMA0","activated":"2024-12-17T06:09:15.496Z","native":0,"bps":9600,"parity":"N","stopbits":1,"cycle":1.00}]} {"class":"WATCH","enable":true,"json":false,"nmea":true,"raw":0,"scaled":false,"timing":false,"split24":false,"pps":false} $GNGGA,060915.000,4610.46144,N,12350.28108,W,1,09,1.2,2.3,M,0.0,M,,*66 $GNGLL,4610.46144,N,12350.28108,W,060915.000,A,A*58 $GPGSA,A,3,05,20,25,29,,,,,,,,,2.4,1.2,2.1*3F $BDGSA,A,3,14,28,33,37,42,,,,,,,,2.4,1.2,2.1*28 $GPGSV,3,1,12,05,59,084,12,11,12,064,,12,08,164,,15,06,143,*73 $GPGSV,3,2,12,18,45,255,,20,32,050,19,23,08,199,,25,36,191,18*75 $GPGSV,3,3,12,26,28,308,,28,05,257,,29,83,013,11,31,10,283,*78 $BDGSV,3,1,09,11,19,085,,14,39,105,25,21,07,028,,23,08,198,*6D
Ah joy!
Python integration
I need to put a short python script here...
Resources
gpsd home: http://gpsd.berlios.de/