Flash drive acts similar to any Mass Storage Class device where the NVM is used as storage media. The COM port can be opened using any of the terminal applications and to demonstrate two-way communication, a character typed on the terminal window is echoed back by the USB device. The application creates a USB CDC Device that enumerates as a COM port and Flash Drive simultaneously. ![]() To demonstrate two-way communication, when a character is typed on the terminal window, it is echoed back by the USB device. The COM port can be opened using any of the terminal applications. The application creates a USB CDC Device that enumerates as a single COM port on the USB host PC. To demonstrate communication between the two COM ports, a character typed in one of the COM port is displayed on the other and vice versa. ![]() ![]() The application is example of a USB CDC Device that enumerates as a dual COM port on the USB host PC.
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