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STM32H753-EVAL does not start DFU from USB other than the USB connected to PA11 and PA12

viswa08
Associate

‎2023-08-28 03:08 AM

Hi All,

I have a scenario where the USB port should become DFU capable when the chip is erased and this functionality is working as expected for USB OTG1 FS which is connected to PA11 and PA12, but I want DFU capability on USB connected to PB14 and PB15.

May I know how it can be done?, since erasing chip is defaulting DFU to usb1 (PA11 and PA12)

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1 REPLY 1
TDK
Guru

‎2023-08-28 05:20 AM

The system bootloader only supports DFU USB on PA11/PA12. If you want it on PB14/PB15, you would need to make your own DFU bootloader which supports these pins. There is no easy "swap pins" method available.

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