STM32WB55RG Error in initializing ST-LINK device. Reason: No device found on target

[LZure]

I have two P-Nucleo-WB boards and both of them end up in this state.

CubeIDE trying to load binary:

CubeProgrammer:

 

Found several topic that looks the same however nothing helped. Has anyone solved this problem?

[MM..1]

Configure connect mode to Under reset

[LZure]

I have tried to connect it "Under reset mode" with pressed reset button. Result is the same:

[MM..1]

Seems power on your board is unstable. Check it ... Under reset is mode not presed but

[LZure]

Power comes from USB port and it's the same on other ports. Connecting under reset results in this same error. Is there any other method I could try to bring back my stm?

[LZure]

I have managed to run board in bootloader mode and successfully connect with CubeProgrammer through UART. I was able to load bin file. Unfortunately ST-link still does not work and I receive all the time this same error: "No device found". Any thoughts what else I can do?

[Remy ISSALYS]

Hello,

Your power supply seems to be very low, maybe you can try to change your usb cable.

Best Regards

[LZure]

I have checked voltage on my both boards and it seems like both of them got this same issue with voltage:

First board:

5V pin measured 2.5 V and 3V3 pin measured 2.3 V

Second board:

5V pin measured 5 V and 3V3 pin measured ~0 V

Strange is that I have taken precautions after first board failed and only think I did with board was plug/unplug st-link usb cable.

[Remy ISSALYS]

Hello,

In order to use ST LINK port, ensure that JP1 is on USB STL position.

Best Regards

[LZure]

Hi Remy,

Jumpers are ok. I had right voltage before. It seems like I have bricked somehow two this same boards with my program. With first I had doubts if I have break it with some static charge but with second I was rather cautious doing stuff and yet, it still got broken. Do you think it is recoverable?

Best regards

[Remy ISSALYS]

Hello,

I think you should check in the device management if there is no problem with the ports, and try to disconnect the port in device management and reconnect.

Check if all jumpers are correctly configured :

• set correctly the jumper JP1 ([7-8] on USB STL).
• JP2 is ON
• JP3 is ON 

Make sure to upgrade the ST-LINK/V2-1 firmware. Are you able to connect your board in USB DFU mode ? If yes, can you recover the option bytes please ?

Best Regards