qmk_firmware
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Port single processor with IO Expander
First of all thanks for the work on this. I've been dreaming of running QMK on my nrf52840 keyboard for a while so this is awesome.
Would you be able to give me any hints on what to change so that I can make this work with my keyboard which is just a single nrf52 (Adafruit nrf52840 Express), and a MCP23S17 io expander.
Just a few classes/methods I should take a look at would be greatly appreciated.
I took a look at your changes, but unfortunately I've only been using Adafruit's nrf52 lib to date so I'm not too familiar with nordic's SDK.
Also, I saw from the device name, but are you from https://yushakobo.jp/ ?