USB串口通信的源程序，使用芯片CH375的主机方式和从机方式,USB serial communication source, use the chips CH375 host mode and slave mode

此工程为CH375B USB桥接芯片设备驱动程序，包括完整的底层驱动程序和配置文件。-This works for CH375B USB bridge chip device drivers, including a complete low-level drivers and configuration files.