STM32F103C8(SourceCode)Serial(UART)toUSBHIDKeyboardMouseJoystick串口转USB键盘;鼠标;手柄源码(1)使用CompositeDevice组合(复合)设备(1.1)1个Device->1个Configuation->3个Interfance(Keyboard&Mouse&Joystick)(1.2)KeyboardInterfance->HID(bootmode)->2个Endpoint(IN_0x81&OUT_0x01)->KeyboardReportDe