Description: This structure is defines a USB Serial driver. It provides all of the information that the USB serial core code needs. If the function pointers are defined, then the USB serial core code will call them when the corresponding tty port functions are called. If they are not called, the generic serial function will be used instead.
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USB串口驱动\usb-serial.c
...........\usb-serial.h
USB串口驱动
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