USB OTG issue. I am working on a project port that uses an STM32F407ZGT that communicates with a PC via a USB VCP. The original implementation used an FTDI USB chip to provide a VCP. We have a simple command, response protocol to talk to the STM32. F...

While I was getting my USB CDC VCP working using CubeMX, and thanks to everyone who gave feedback, I ran across a statement regarding a bug in the USB stack. The issue was with the handling of a disconnect / reconnect event and device manager not re...

I need some help. I have a design that uses the STM32F407zgt. Up to now every thing has been going prefectly.  I started my design using the STM32F407VGT or the Discovery board as my breadboard / proof of concept. With the 407VGT, I was able to crea...