Sending test data to NMEA0183
How can I send data to the NMEA0183 output?
My plan is to use SignalK to test my MOB sniffer (which has an NMEA0183 input).
I'm using the MacArthur HAT - receiving of Messages works (from AIS).
Unfortunately, I have no idea of how the JSON string!? should look like and if I can send it via the "DataFiddler".
Any documentation / links will be appreciated.
Thanks very much for your help!
8 Replies
if you create a 0183 UDP data connection you can send arbitrary data with netcat
echo '$GPRMC,210230,A,3855.4487,N,09446.0071,W,0.0,076.2,130495,003.8,E*69' | nc -4u -w0 localhost 7777
you can activate signalk:streams:udp-data debug logging key in Server Log to see the received data
and telnet localhost 10110 to see what is getting output@Teppo Kurki Perfect, it worked - I can send UDP messages.
My questions are now:
- What is the right message (right format of my message)
- How can I relay the UDP Message to the NMEA0183 output?
As I can see - it should be a
AIVDM message, with an MMSI Starting with 972XXXXXX for a MOB alert.Nmea0183 input data is automatically relayed out to tcp 10110
amazing, thanks for this info!
do you have a hint, where I can find/how I can generate a propper AIS / MOB Message?
Since my output is serials - I have read the message next to "NMEA 0183 Source". "Configure output events below..."
Can I configure the
Source Priorities Settings to just forward all, or so I need to adjust it somewhere else?