AnsweredAssumed Answered

VBUS usage by bootloader.

Question asked by wolff.roger on Feb 16, 2016
Latest reply on Feb 25, 2016 by waclawek.jan
I have a board that has an STM32F405 with the USB pins routed to the USB connector. I had problems getting that board to boot, and I was unable to get it to work as DFU device on USB. 

One of the possible causes is that the DFU firmware uses VBUSSENSE. That would mean that the device waits for vbus before activating the USB interface. Could that be the case? I have not hooked up the VBUSSENSE line to the CPU. 

Does anybody know if the F405 uses VBUSSENSE in the DFU bootloader?