[Qt] Access USB device without any USB library

Since many people have downloaded examples of controlling USB devices through libusb, I would like to provide an example that does not require libusb for everyone to reference.

1. Below is the link to the test video:

2. The download link for the Qt source code and Qt IDE used is as follows:
Qt IDE
Qt Source Code

3. The download link for the test code of STM32F401 Discovery Board is as follows: (The IAR EWARM version used is 8.32.1)
STM32F401 Test Code

4. If you don’t know how to compile the Qt program, I also provide an executable file that can be run directly. The download link is as follows:
Qt_Release