15 releases (1 stable)
1.0.0 | Nov 1, 2023 |
---|---|
0.7.0 | Sep 1, 2020 |
0.6.0 | Jan 3, 2020 |
0.5.1 | Aug 18, 2019 |
0.2.1 | Oct 11, 2018 |
#593 in Network programming
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gpsd_proto
The gpsd_proto
module contains types and functions to connect to
gpsd to get GPS coordinates and satellite
information.
gpsd_proto
uses a plain TCP socket to connect to gpsd
, reads
and writes JSON messages. The main motivation to create this crate
was independence from C libraries, like libgps
(provided by
gpsd
) to ease cross compiling.
A example demo application is provided in the example
sub
directory. Check the repository for up to date sample code.
Testing
gpsd_proto
has been tested against gpsd
version 3.17 on macOS and Linux with these devices:
- Quectel EC25 Mini PCIe 4G/LTE Module
- u-blox MAX-M8Q
- GPS mice (Adopt SkyTraQ Venus 8)
- iOS app GPS2IP.
Feel free to report any other supported GPS by opening a GitHub issue.
Reference documentation
Important reference documentation of gpsd
are the JSON
protocol and the client
HOWTO.
Development notes
Start gpsd
with a real GPS device:
/usr/local/sbin/gpsd -N -D4 /dev/tty.SLAB_USBtoUART
Or start gpsd with a TCP stream to a remote GPS:
/usr/local/sbin/gpsd -N -D2 tcp://<IP>:<PORT>
Test the connection to gpsd
with telnet localhost 2947
and send the string:
?WATCH={"enable":true,"json":true};
Dependencies
~0.7–1.7MB
~36K SLoC