STM32h7a3 - programming issue?

[BSR]

Hello All,

We are using STM32h7A3 microcontroller in our project. When we dump the simple uart code and reset , it is giving the results until power off condition. After power off condition , ST link unable to detect the MCU until erase FLash and download code again using STM32 cube programmer.

Attached the sch for reference. Any suggestion in hardware , firmware side.

Anybody have cubemx setting for this MCU , please share .

[TDK]

> it is giving the results until power off condition.

The chip has to be powered in order to function. The SWD connector does not provide power.

> ST link unable to detect the MCU until erase FLash and download code again using STM32 cube programmer.

But STM32CubeProgrammer uses st-link in order to communicate with the chip. If it's unable to detect, how is it programming it?