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Stm32H7b3i DK st-link failed
I have a stm32h7b3i dk, after loading a program created by me (with stlink firmware update) I can no longer connect, to load another sample project.
Amel NASRIBest answer
ST Technical Moderator
October 15, 2021
Hi @Icont.1 ,
I suggest you to make sure that your power supply configuration is aligned with real hardware setup.
As explained in the article Unable to connect to STM32H7 devices, most of the boards have the supply directly from SMPS (if available in MCU), which requires the PWR_DIRECT_SMPS_SUPPLY parameter to be set. But STM32CubeMX generated projects might have PWR_LDO_SUPPLY option by default.
-Amel
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