Developing STM32 USB with cubemx

5 Line code , Can let wechat small program on the shelf to their own APP in | Register and send it to Dajiang 、 Huawei 、 Cherry keyboard ！>>>

1) Refer to the following pages ：

a)https://www.stmcu.org.cn/module/forum/forum.php?mod=viewthread&tid=612436&extra=page%3D&page=1

b)https://blog.csdn.net/qq_36561846/article/details/109427606

c)https://blog.csdn.net/sudaroot/article/details/86627853

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