Some of the knockoff ST-LINKs I bought in the past have become useless. They are all broken when plugging and unplugging while power is on, some are broken on the SWD interface, and some are broken on the USB. Then make one yourself.
Refer to ST's official NUCLEO-WB55.Nucleo onboard ST-Link_V2-1, using TXS0108EPWR to buffer the SWD port, 74LVC1G07 to isolate RST, and adding TVS to the USB interface.
The firmware is found on the platform and can be upgraded.
V1.1 update:
1. Added RST output pull-up resistor.
2. 74LVC1G07 is replaced with SOT23-5 package.
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