I am using Mbed OS 6.6 with an STM32F412ZG. When I make a simple project with USBSerial, it builds without issue.
However, when I plug in a USB cable to the “User USB” connector on the opposite side of the board from the built-in ST-Link, the USB does not successfully enumerate.
Is there something special that I need to do to get the USB device to work correctly with the NUCLEO-144 boards? I’m having a similar issue with a NUCLEO-743ZI2-based NUCLEO-144 board and Mbed OS 5.15.
Any help or suggestions would be greatly appreciated.