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README.MD

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Demonstration of using the C interface for libsmart_keymap with CH32X035 firmware.

The USB HID firmware comes from the CH32X035 EVT examples.

The firmware has been modified to scan its matrix for one of these boards, depending on how generate/matrix.c is generated:

  • WeAct Studio CH32X035 development board. (PB0, PB1, PB3, PB11).

  • CH32X-48.

The firmware has been modified to use libsmart_keymap.

Building

The task-runner just is used for convenient invocation of build tasks.

The smart-keymap's justfile provides an install recipe for conveniently building & installing the libsmart_keymap.a.

This directory's justfile provides a flash recipe for conveniently building & flashing the HID keyboard firmware.

From the smart-keymap root directory, the firmware can be flashed with the keymap tests/ncl/{test_keymap}/keymap.ncl by running e.g.:

just \
  test_keymap=keymap-48key-checkkeys \
  dest_dir="firmware/ch32x035-usb-device-compositekm-c/libsmartkeymap/" \
  install && \
just firmware/ch32x035-usb-device-compositekm-c/flash

Flashing the CH32X

If the CH32X does not have code protection enabled, wchisp can be used to flash the MCU by shorting DOWNLOAD and plugging in the USB connector.

The WeAct core board, for some reason, has code protection enabled. This requires wlink and a and a WCH link compatible with the CH32X035, such as WCH-LinkE. (SEE: ch32-rs/wchisp#68 (comment)).