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Need to keep functions generic for GPIOs
What is providing the RSSI signal? What is the form of the data (Need to ask Aidan Bowers)
Related hardware: An RC Link
RFD900.
https://files.rfdesign.com.au/Files/documents/Software manual.pdFpdf
Need to see how RFD900 sends RSSI signals and how it interfaces with the actual flight controller. Then can determine what signal needs to be "decoded"
Will the PPM driver be what calls the RSSI module?
We are no longer using singleton, need to get rid of that
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