STM32WB55RGV6 (board P_NUCLEO_WB55) STM32cubeprogrammer errors show: first erro: No STM32 target found when i press button 'reset' error: ST_link erro(DEV_TARGET_CMD_ERR) stm32cubeide errors: error in launch sequence: Failed to startGDB server

[Lep]

Note: I can use stlink to download programs to other boards.But p_nulceo_wb55 doesn't work well. I use an external stlink instead of the on-board stlink, the errors are same.

I was learning Bluetooth, It would have worked well. After a while, an error has occurred.

Is it because I have downloaded some program?

The errors are as follows(use stm32cubeprogrammer ):

the erros in stm32cubeide:

 

[Lep]

Hello,@Sara BEN HADJ YAHYA (ST Employee)

I have posted a lot about these problems, and these methods are not working.I only remember downloading the BLE example at the time, and then the next day there was this failure.

Thanks,

Lep