WCH-LinkE doesn't find target #2158

Schildkroet commented 2025年10月31日 15:00:20 +01:00 (Migrated from github.com)

Hello,

i have a WCH-LinkE and CH32V203. When using wlink, everythin works as expected and the probe+mcu are detected:

13:53:58 [INFO] Connected to WCH-Link v2.11(v31) (WCH-LinkE-CH32V305)
13:53:58 [INFO] Attached chip: CH32V20X [CH32V203C8T6] (ChipID: 0x20310510)
13:53:58 [INFO] Chip ESIG: FlashSize(64KB) UID(3e-92-5d-bc-cd-ab-68-fa)
13:53:58 [INFO] Flash protected: false
13:53:58 [INFO] RISC-V ISA(misa): Some("RV32ACIMUX")
13:53:58 [INFO] RISC-V arch(marchid): Some("WCH-V4B")

But when using blackmagic app, only the probe is found. No target.

Black Magic Debug App v2.0.0-239-g94281769-dirty
 for Black Magic Probe, ST-Link v2 and v3, CMSIS-DAP, J-Link, FTDI (MPSSE) and WCH-Link
Using 1a86:8010 7B578F060034 wch.cn
 WCH-Link ---
Firmware version: v2.11
Hardware type: WCH-LinkE (CH32V305)
Running in Test Mode
Target voltage: Unknown
Setting max debug interface frequency not available or not yet implemented
Reading max debug interface frequency not available or not yet implemented
No target found

I also compiled firmware with ch32v support, to test on BMP, but i got the same result:

Black Magic Debug App v2.0.0-239-g94281769-dirty
 for Black Magic Probe, ST-Link v2 and v3, CMSIS-DAP, J-Link, FTDI (MPSSE) and WCH-Link
Using 1d50:6018 DDD7C1DC Black Magic Debug
 Black Magic Probe (ST-Link/v2) v2.0.0-239-g94281769-dirty
Running in Test Mode
Target voltage: 3.30V
Speed set to 6.000MHz for SWD
Switching from JTAG to dormant
Switching from dormant to SWD
Deprecated JTAG to SWD sequence
No usable DP found
No target found

Is there no real support for WCH? Or did i miss something?

Hello, i have a WCH-LinkE and CH32V203. When using wlink, everythin works as expected and the probe+mcu are detected: ``` 13:53:58 [INFO] Connected to WCH-Link v2.11(v31) (WCH-LinkE-CH32V305) 13:53:58 [INFO] Attached chip: CH32V20X [CH32V203C8T6] (ChipID: 0x20310510) 13:53:58 [INFO] Chip ESIG: FlashSize(64KB) UID(3e-92-5d-bc-cd-ab-68-fa) 13:53:58 [INFO] Flash protected: false 13:53:58 [INFO] RISC-V ISA(misa): Some("RV32ACIMUX") 13:53:58 [INFO] RISC-V arch(marchid): Some("WCH-V4B") ``` But when using blackmagic app, only the probe is found. No target. ``` Black Magic Debug App v2.0.0-239-g94281769-dirty for Black Magic Probe, ST-Link v2 and v3, CMSIS-DAP, J-Link, FTDI (MPSSE) and WCH-Link Using 1a86:8010 7B578F060034 wch.cn WCH-Link --- Firmware version: v2.11 Hardware type: WCH-LinkE (CH32V305) Running in Test Mode Target voltage: Unknown Setting max debug interface frequency not available or not yet implemented Reading max debug interface frequency not available or not yet implemented No target found ``` I also compiled firmware with ch32v support, to test on BMP, but i got the same result: ``` Black Magic Debug App v2.0.0-239-g94281769-dirty for Black Magic Probe, ST-Link v2 and v3, CMSIS-DAP, J-Link, FTDI (MPSSE) and WCH-Link Using 1d50:6018 DDD7C1DC Black Magic Debug Black Magic Probe (ST-Link/v2) v2.0.0-239-g94281769-dirty Running in Test Mode Target voltage: 3.30V Speed set to 6.000MHz for SWD Switching from JTAG to dormant Switching from dormant to SWD Deprecated JTAG to SWD sequence No usable DP found No target found ``` Is there no real support for WCH? Or did i miss something?

mean00 commented 2026年05月18日 08:20:14 +02:00

for the last part, i think you tried with "mon swdp_scan", this is for arm cores.
You should try with "mon rvswdp_scan" or something like that (mon help will give you the exact command)

for the last part, i think you tried with "mon swdp_scan", this is for arm cores. You should try with "mon rvswdp_scan" or something like that (mon help will give you the exact command)