Module:magnetometer works without magInMsg. What's it for?

[patrickwalton]

I noticed today that the magnetometer module in scenarioTAM.py is not subscribed to the WMM module on magInMsg. I tried subscribing it and it didn't change the results. How is the magnetometer getting the magnetic field data without that subscription? Am I misunderstanding the purpose of magInMsg?

[TomThomson93]

I see in line 271: TAM.magInMsg.subscribeTo(magModule.envOutMsgs[0])

So TAM is subscribed to the magModule message... Maybe a bit weirdly positioned in the code

[patrickwalton]

I see that now. Not sure how I missed it after doing CTRL+F for "subscribeTo".