Connection trial over DFU, fails to connect and resets the device. Bootloader checked and compared with other devices.

NMich.3 · ‎2023-03-16

I have attached the log output of the Programmer. Device enters DFU mode correctly and it is being recognised by windows but as soon as a connection attempt is done, the device resets after some time. Any way that I can debug the bootloader code and check what is going wrong?

The chip used is : STM32F401CCU6

And the binary available on the System memory is attached below which might tell what version it is.

Edit:

1- Added the chip version

2- Attached the hex of the system memory

Aziz BRIGUI · ‎2023-03-17

Hello @NMich.3,

Could you specify the part number as well as the bootloader version of your device ?

Thanks,

Aziz

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Billy OWEN · ‎2023-03-17

Hi @NMich.3

The forum moderator had marked your post as needing a little more investigation and direct support. An online support case has been created on your behalf, please stand by for just a moment and you will hear from us.

Regards,

Billy

NMich.3 · ‎2023-03-18

I've not flashed the bootloader my self. Is there a way to get the version of it out from the Stm32Programmer?

When I compare the flash addresses from the System memory with another device where DFU mode functions correctly, there is not difference.

I would also like to mention that programming the device over JTAG works just fine.