USB接口开发的文章，有实际开发的内容，比较实用。-USB interface to develop the article, there are the actual development of content, more practical.

USB 2.0协议说明，开发有用的，介绍USB2.0的通讯协议-USB 2.0 protocol specification, develop useful to introduce the USB2.0 protocol

The STM32F429 Discovery helps you to discover the high-performance microcontrollers of the STM32 F4 series and to develop your applications easily. It offers everything required for beginners and experienced users to get started quickly. Based on