Kernel hacking for the RFM12B

RFM12BI’ve been busying myself with fixing up and adapting the RFM12B Linux driver. My first thought was simply to give people support for sending and listening for OOK signals as an extension, then taking the device support in the rtl_433 decoder to extend RFM12B driver to include lots of OOK device support for things like weather stations and energy monitors.

JeeLib already does most of this work on Arduino so for the most part this is simply a matter of joining lots and lots of code together from different places and making sure it sits right. I’ve decided that in order to do this it would probably be better to re-write the driver while trying to fix some of the original driver’s TODO list along the way.

The driver will loosely allow :-

  • Compatibility with the original RFM12B driver & original JeeLib compatibility.
  • Send OOK, FSK messages to devices.
  • Listen for OOK, FSK messages from devices.
  • Set tuning to a specific frequency.

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