Nintendo_Switch_Reverse_Engineering
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How to read Joycon as UART device?
From what I gathered here, and also on https://douevenknow.us/post/159292771473/picking-apart-the-joy-con-wired-protocol-and, it appears that Joycon is "just" a not-so-standard UART device.
Which would mean that I can take: USB<->UART dongle or RaspberryPi UART pins add 1.8v <-> 3.3v/5v converter as needed reverse Pin 8 (Serial data Joycon to console) logic states hack together something for 5v charging
With pins being RX - pin 8 Serial data Joycon to console TX - pin 5 Serial data console to Joycon RTS - pin 3 Jdet (not sure?) CTS - pin 10 Flow control
Is that correct?
Yes,It is correct.