hid2cdc

USB keyboard to USB CDC converter using a Raspberry Pi Pico

This is currently used to support USB keyboards without PS/2 compatibility on the PicoMiteVGA: https://geoffg.net/picomitevga.html

Usage

see https://www.thebackshed.com/forum/ViewTopic.php?TID=16545&P=1

Pin	Function
GPIO0	serial debug output at 115200n8
GPIO3	ctrl-alt-del reset output, optionally connect to RUN on the picomite
GPIO2	initial numlock state, jumper to GND for numlock ON
GPIO6	jumper to GND for QWERTZ keyboard support

Resources

• https://github.com/No0ne/ps2pico
• https://vt100.net/docs/vt100-ug/chapter3.html
• https://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/translate.pdf
• https://kbdlayout.info/kbdgr