The PC can recognize STLINK-V3SET，but cant connect target!

[bjhon]

I can use the STM32CubeProgrammer to recognize the ST-LINK V3, but I can't connect to the STM32. I can connect back to ST-Link V2. Use the SWD mode. The ST-LINK V3 firmware is V3J5M2B3S1.Help�?

I used the logic analyzer to grab the SWDIO and SWCLK signals and found that the ST-Link V2 has a signal, but the ST-Link V3 has no signal.

this can conncet target​

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this cant conncet target​

[S.Ma]

What exactly is the target?

[bjhon]

My own board, STM32F103RCT6, and I also tried other boards, stm32f429

[Tesla DeLorean]

Try dropping the connection clock frequency. ​

[bjhon]

I have already reduced the frequency to the lowest:tired_face: