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bemasher / rtlamr

An rtl-sdr receiver for Itron ERT compatible smart meters operating in the 900MHz ISM band.
GNU Affero General Public License v3.0
2.19k stars 249 forks source link

Error connecting to spectrum server #88

Closed eightysteele closed 6 years ago

eightysteele commented 6 years ago

Hello!

I installed rtlamr via go get github.com/bemasher/rtlamr with Go version go1.9.2 darwin/amd64 on OS X version 10.11.6 (15G1004), but I'm getting an error about connecting to spectrum server.

To reproduce, I'm testing with rtlamr -msgtype=idm --format=json -msgtype=scm+ which fails with:

main.go:59: Error connecting to spectrum server: dial tcp 127.0.0.1:1234: getsockopt: connection refused

Looks like maaaaybe github.com/bemasher/rtltcp wasn't installed correctly? I can't run rtl_tcp and it doesn't appear to be anywhere on my machine.

Thanks for any help!

toastedcornflakes commented 6 years ago

rtl_tcp is from the RTL-SDR software distribution. You can install it by following those instructions.

bemasher commented 6 years ago

Due to a somewhat unfortunate naming scheme the github.com/bemasher/rtltcp golang package is often confused with the spectrum server rtl_tcp. Please note that the golang package only allows rtlamr to speak to the spectrum server, you are responsible for obtaining binaries or building the spectrum server from source.

bemasher commented 6 years ago

I should also note that the example invocation you gave is not going to do what you think it will do. rtlamr does not support multiple protocols per instance and providing more than one msgtype flag will use the value given in the last instance of the flag. Your example will only listen for SCM+ packets, not IDM and SCM+.