STM32F4 Discovery won't go into DFU bootloader mode

[bmentink]

Posted on July 18, 2015 at 00:19

Hi All,

I have two discovery boards. When I go into discovery mode (boot0 high, boot1 low)  and then run ''dfu-util -l''  ... with one board I see the devices listed, the other board not .. could this be a faulty board?The ''good'' board was a fresh one just out of the packet. The one that doesn't work I have used before and was programmed via ST-LINK using openosd, that worked fine.But this time I want to use DFU and it does not work on that board. Is there a way I could have destroyed the bootloader with ST-LINK?Thanks,  #stm32f4-discovery-dfu

[Tesla DeLorean]

Posted on July 18, 2015 at 00:54

Is there a way I could have destroyed the bootloader with ST-LINK?

No

[bmentink]

Posted on July 18, 2015 at 22:40Hi Clive,So do you know of any reason that board cannot be seen as a DFU device?I guess it must be faulty ..Cheers,

[Tesla DeLorean]

Posted on July 19, 2015 at 15:23

You'd want to check the supplies and regulators.

Check if the USB connector is viable, try a VCP or MSC example, of the FW Upgrade example if you have the right stubby cable to connect to a USB Flash drive.