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Clarify instructions in plotjuggler readme (#21158)

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old-commit-hash: 4978a7fae43644017c1fef2525a7d569f45ba502
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Ross Fisher
2021-06-06 19:16:32 -04:00
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parent 67f6bb5c9b
commit 40be12ab37
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tools/plotjuggler/README.md
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@@ -38,8 +38,8 @@ To get started exploring and plotting data live in your car, you can start PlotJ
For this to work, you'll need a few things:
- Enable tethering on your comma device and connect your laptop.
- Run `export ZMQ=1` which tells the streaming plugin backend to use ZMQ. If you're streaming locally, you can omit this step as ZMQ is used to transport data over the network.
- Most importantly: openpilot by default uses the MSGQ backend, so you'll need to [ssh into your device](https://github.com/commaai/openpilot/wiki/SSH) and run bridge. This simply re-broadcasts each message over ZMQ: `./cereal/messaging/bridge`
- Run `export ZMQ=1` on the computer, which tells the streaming plugin backend to use ZMQ. If you're streaming locally, you can omit this step as ZMQ is used to transport data over the network.
- Most importantly: openpilot by default uses the MSGQ backend, so you'll need to [ssh into your device](https://github.com/commaai/openpilot/wiki/SSH) and run bridge. This simply re-broadcasts each message over ZMQ: `./cereal/messaging/bridge`.
Now start PlotJuggler using the above `juggle.py` command, and find the `Cereal Subscriber` plugin in the dropdown under Streaming. Click Start and enter the IP address of the comma two. You should now be seeing all the messages for each [service in openpilot](https://github.com/commaai/cereal/blob/master/services.py) received live from your car!