MCU virtual serial port and interface settings-EEWORLD

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Virtual Serial Port

A virtual serial port is a serial port simulated by a computer through software. When other design software uses the serial port, you can call the virtual serial port to simulate and check the correctness of the design. First, you need to install the software for setting the virtual serial port. There are many software for setting virtual serial ports on the Internet. I use VSPD, which can be tried for 1 month. After the trial period, the software will not be usable, but don't worry, the virtual serial port you set will not disappear and you can continue to use it.

Settings interface:

Virtual serial port and its use in Proteus - Jianghai - Jianghai

I set COM3 and COM4. The software can only be set in pairs, mainly because one party can monitor the other party during communication. If only one virtual serial port is set, if you use COM3 to send and receive data, you can't verify the correctness and source of what you send and receive. This is the cleverness of the software. When setting up the software, connect the two virtual serial ports, so that the sending and receiving can be monitored. You can see from the device manager

Two virtual serial port connection methods:

In this way, you can use the serial port debugging assistant to debug serial port communication. From the figure below, you can see that the data sent by COM3 reaches the receiving area of COM4, and the data sent by COM4 reaches the receiving area of COM3, thus realizing the interconnection between COM3 and COM4.

At this point, the virtual serial port has been set up. For other design software, there is no difference between the virtual serial port and the ordinary serial port. For example, the serial port debugging assistant uses the virtual serial port in the same way as the ordinary serial port.

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