ci: add only-when-changed to nightly-release to avoid duplicate publishes (#108)

Same fix as wlink #92 — skips re-publishing when HEAD hasn’t changed, preventing spurious release notifications to watchers on cron runs.

Co-authored-by: Claude Sonnet 4.6 noreply@anthropic.com

wchisp - WCH ISP Tool in Rust

crates.io

Command-line implementation of the WCHISPTool in Rust, by the ch32-rs team.

This tool is a work in progress.

[!NOTE] This tool is for USB and UART ISP, not for use with WCH-Link.

ch32-rs/wlink is a command line tool for WCH-Link.

Installing

The prebuilt binaries are available on the Nightly release page.

For Windows users, you will need VC runtime to run the binary. You can download it from Microsoft.

Or else, you can install it from source.

# install libusb for your platform
# macOS
> brew install libusb
# Ubuntu
> sudo apt install libusb-1.0-0-dev

# install wchisp
> cargo install wchisp --git https://github.com/ch32-rs/wchisp
# or use
> cargo install wchisp --force

Prebuilt Binaries

Prebuilt binaries are available on the Github Actions Page. Click the newest runs at Github Actions Page and download the binary from “Artifacts” section.

Note for Windows

If you are using Windows, you may need to install the CH375DLL64.dll if you do not have it in your system. If you encounter a “CH375DLL64.dll not found” error, please download it from the WCH official website and put the dll next to this executable. You may download it from https://www.wch-ic.com/downloads/CH372DRV_ZIP.html, or search for ‘CH375’ on WCH websites if the link is broken. When you use the official WCH driver you installed with IDE or WCHISPTOOL, CH375DLL64.dll allows you to program the target chips without changing the driver.

It is also OK to use the WinUSB driver with Zadig.

Note for Linux

If you are using Linux, you need to set the udev rules for your device.

# /etc/udev/rules.d/50-wchisp.rules
SUBSYSTEM=="usb", ATTRS{idVendor}=="4348", ATTRS{idProduct}=="55e0", MODE="0666"
# or replace MODE="0666" with GROUP="plugdev" or something else

Arch Linux

Arch Linux users can install wchisp or wchisp-git via the AUR.

yay -S wchisp

yay -S wchisp-git

Usage

> wchisp info
14:51:24 [INFO] Chip: CH32V307VCT6[0x7017] (Code Flash: 256KiB)
14:51:24 [INFO] Chip UID: 30-78-3e-26-3b-38-a9-d6
14:51:24 [INFO] BTVER(bootloader ver): 02.60
14:51:24 [INFO] Code Flash protected: false
RDPR_USER: 0x9F605AA5
  [7:0] RDPR 0b10100101 (0xA5)
    `- Unprotected
  [16:16] IWDG_SW 0b0 (0x0)
    `- IWDG enabled by the software
  [17:17] STOP_RST 0b0 (0x0)
    `- Enable
  [18:18] STANDBY_RST 0b0 (0x0)
    `- Enable
  [23:21] SRAM_CODE_MODE 0b11 (0x3)
    `- CODE-228KB + RAM-32KB
DATA: 0x00FF00FF
  [7:0] DATA0 0b11111111 (0xFF)
  [23:16] DATA1 0b11111111 (0xFF)
WRP: 0xFFFFFFFF
  `- Unprotected

> wchisp flash ./path/to/firmware.{bin,hex,elf}

> wchisp config info

> wchisp config reset

CH32V00x Notes

The CH32V00x series DOES NOT have a USB ISP interface; it can only be accessed via UART. Use -s or --serial command-line option to specify serial transport, and -p or --port option to specify COM/TTY port.

Also note that ISP bootloader entry cannot be controlled via external pin state at reset. Instead, user application code must instruct device to enter the bootloader via setting FLASH_STATR.MODE flag and performing a software reset (see PFIC_CFGR).

Tested On

This tool should work on most WCH MCU chips. But I haven’t tested it on any other chips.

CH32V307
- VCT6
- RCT6 #8
CH32V103
CH32F103
CH549
- VeriMake CH549DB CH549F
CH552
- Works but might be buggy #10 #14
CH582
- CH58xM-EVT
- FOSSASIA Badgemagic CH582M
- WeAct Studio CH582F
CH573
- WeAct Studio CH573F
CH592
- WeAct Studio CH592F
CH579
- BTVER: 02.90 #18
CH559
- CH559TL_MINIEVT_V20 by wch.cn
CH32V203
- CH32V203G6 FlappyBoard
- nanoCH32V203
CH32V003
CH32X035
… (feel free to open an issue whether it works on your chip or not)

TODOs

chip detection, identification
- wchisp probe
- wchisp info
flash and verify code
- ELF parsing
- hex, bin, ihex support
- skip erasing, verifying, resetting
chip config register dump
- wchisp config
- works for most chips, but not all. Issues and PRs are welcomed
write config registers
- reset config registers to default
- write config with friendly register names? like wchisp config set SRAM_CODE_MODE=1 ...
EEPROM dump
EEPROM erase
EEPROM write
select from multiple chips (using -d to select device index) wchisp -d 0 info
ISP via UART
ISP via Net

Contribution

This project is under active development. If you have any suggestions or bug reports, please open an issue.

If it works for your devices, please open a pull request to modify this README page.

It it doesn’t, please open an issue. Better provide the following information:

Chip type (with variant suffix).
Debug print of USB packets.
Correct USB packets to negotiate with the chip (via USBPcap or other tools).