STM32WL5Mo dosent respond to ST-LINK

[laesser]

Hello,

I'm trying to connect my ST-LINK-PWR V3 to my own bord with a STM32WL5M0 but it doesn't wrok.

 

I also tried with a J-Link probe and a Nucleo board and that doesn't work either.

I modified my card to work at 3.3V, no improvement.

The MCU is fresh from factory so virgin from any code.

I have read many articles about the same problem but haven't found any solution.

Any idea?

Thanks.

[STTwo-32]

Hello @laesser 

This may be due to some design issues on your design. Could you please refer to a HW expert to check your design. Then ensure that you are wiring correctly the ST-Link to your Design.

Best Regards.

STTwo-32