wlink - WCH-Link(RV) command line tool

Note This tool is still in development and not ready for production use.

Feature Support

• Flash firmware, support Intel HEX, ELF and raw binary format
• Erase chip
• Halt, resume, reset support
• Read chip info
• Read chip memory(flash)
• Read/write chip register - very handy for debugging
• Code-Protect & Code-Unprotect for supported chips
• SDI print support, requires 2.10+ firmware
• Serial port watching for a smooth development experience
• Windows native driver support, no need to install libusb manually (requires x86 build)

Tested On

Probes

Current firmware version: 2.11 (aka. v31).

NOTE: The firmware version is not the same as the version shown by WCH's toolchain. Because WCH calculates the version number by major * 10 + minor, so the firmware version 2.10 is actually v30 0x020a.

• WCH-Link CH549 - the first version, reflash required when switching mode
• WCH-LinkE CH32V305 - the recommended debug probe
• WCH-LinkW CH32V208 - wireless version
• WCH-Link? CH32V203

MCU

• CH32V003
• CH32V103
• CH32V203
• CH32V307
• CH569/CH565
• CH573/CH571
• CH583/CH582/CH581
• CH592/CH591
• CH643 - I don't have this chip, help wanted
• CH641 - I don't have this chip, help wanted
• CH32X035
• CH32L103 - I don't have this chip, help wanted
• CH8571 - No other source about this chip, help wanted
• ... (Feel free to open an issue if you have tested on other chips)

Install

cargo install --git https://github.com/ch32-rs/wlink or download a binary from the Nightly Release page.

Note On Linux, you should install libudev and libusb development lib first. Like sudo apt install libudev-dev libusb-1.0-0-dev on Ubuntu.

Arch Linux

Arch Linux users can install wlink-git via the AUR.

yay -Syu wlink

Usage

Note For help of wire connection for specific chips, please refer to docs subdirectory.

> # Flash firmware.bin to Code FLASH at address 0x08000000
> wlink flash --address 0x08000000 ./firmware.bin
12:10:26 [INFO] WCH-Link v2.10 (WCH-Link-CH549)
12:10:26 [INFO] Attached chip: CH32V30X(0x30700518)
12:10:26 [INFO] Flashing 8068 bytes to 0x08000000
12:10:27 [INFO] Flash done
12:10:28 [INFO] Now reset...
12:10:28 [INFO] Resume executing...

> # Flash firmware.bin to System FLASH, enable SDI print, then watch serial port
> wlink flash --enable-sdi-print --watch-serial firmware.bin
02:54:34 [INFO] WCH-Link v2.11 (WCH-LinkE-CH32V305)
02:54:34 [INFO] Attached chip: CH32V003 [CH32V003F4P6] (ChipID: 0x00300500)
02:54:34 [INFO] Flash already unprotected
02:54:34 [INFO] Flash protected: false
02:54:35 [INFO] Flash done
02:54:35 [INFO] Now reset...
02:54:35 [INFO] Now connect to the WCH-Link serial port to read SDI print
Hello world from ch32v003 SDI print!
led toggle
led toggle
...


> # Dump Code FLASH, for verification
> # use `-v` or `-vv` for more logs
> wlink -v dump 0x08000000 100
18:31:18 [DEBUG] (1) wlink::device: Acquired libusb context.
18:31:18 [DEBUG] (1) wlink::device: Claimed interface 0 of USB device.
18:31:18 [INFO] WCH-Link v2.8 (WCH-LinkE-CH32V305)
18:31:18 [DEBUG] (1) wlink::operations: attached chip: ChipInfo { chip_family: CH32V20X, chip_type: "0x20360510" }
18:31:18 [DEBUG] (1) wlink::operations: Chip UID: cd-ab-b4-ae-45-bc-c6-16
18:31:18 [DEBUG] (1) wlink::operations: flash protected: false
18:31:18 [DEBUG] (1) wlink::operations: SRAM CODE mode: 3
18:31:18 [DEBUG] (1) wlink::operations: RISC-V core version: Some("WCH-V4B")
18:31:18 [INFO] Read memory from 0x08000000 to 0x08000064
08000000:   b7 00 00 08  67 80 80 00  73 50 40 30  73 50 40 34   ×00•g××0sP@0sP@4
08000010:   81 40 01 41  81 41 01 42  81 42 01 43  81 43 01 44   ×@•A×A•B×B•C×C•D
08000020:   81 44 81 46  01 47 81 47  01 48 81 48  01 49 81 49   ×D×F•G×G•H×H•I×I
08000030:   01 4a 81 4a  01 4b 81 4b  01 4c 81 4c  01 4d 81 4d   •J×J•K×K•L×L•M×M
08000040:   01 4e 81 4e  01 4f 81 4f  97 01 00 18  93 81 81 7b   •N×N•O×Oו0•×××{
08000050:   f3 23 40 f1  b7 02 00 00  93 82 02 00  63 f4 72 00   ×#@×ו00×ו0c×r0
08000060:   6f 00 c0 29                                          o0×)


> # Dump System FLASH, BOOT_28KB
> wlink dump 0x1FFF8000 0x7000
....


> # Dump all general purpose registers
> wlink regs
16:24:20 [INFO] Dump GPRs
dpc(pc):   0x2000011a
x0   zero: 0x00000000
x1     ra: 0x49c85c07
x2     sp: 0x20002800
x3     gp: 0x206e24c4
x4     tp: 0x9add07a3
x5     t0: 0xb4a9b38a
....


> # Set dpc(pc) to System Flash
> wlink write-reg 0x7b1 0x000009a8

References

• docs/references.md
• WCH's openocd fork: https://github.com/treideme/openocd-hacks