Requesting mqtt data from LoRa server for emoncms node

@bgrattan
If you’re having trouble with the forum interpreting parts of your post as formatting instructions to the forum software, try surrounding the whole of the code with 3 ‘backticks’ (normally found at the top left of the keyboard) on a line of their own before the code, and 3 more backticks also on a line of their own after the code:

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If you don’t want any language markup applied, then add the word ‘text’ after the first 3 backticks, like this:
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