Initial commit

README.md

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+To use:
+
+- Download a toolchain (e.g. https://www.mounriver.com/download)
+- `make PREFIX=..../bin/riscv-wch-elf-`
+
+If never flashed before:
+- See https://github.com/fossasia/badgemagic-firmware#installation for exact instructions.
+
+Once loaded, holding down both buttons for a few seconds (or holding down the
+lower button whilst waking up the device) should work.
+
+Shows up as LSLED Badge Witch on bluetooth.
+Both HID and CDC-ACM protocol are supported over USB, just as the badge magic firmware supports.
+
+Code licensed under the EUPL.