Exploring Linux Serial Communication: Tips for Sending and Receiving Information via Serial Ports（linux串口信息）

Linux serial communication is a form of communication that involves transmission of data from one computer to another computer through a serial interface. It is one of the most fundamental and commonly used forms of communication in the world today and is essential in many fields, including electronics, engineering and robotics.

Serial communication has been an integral part of the Linux kernel since its inception and continues to be a powerful tool for communication between two computers. In this article, we’ll explore some tips and tricks related to Linux serial communication and provide a few examples of how to send and receive data through a serial interface.

First, let’s look at some of the most common uses of Linux serial communication, such as serial port programming, data transfer between two computers, and serial port debugging. Serial port programming can be used to communicate with various peripherals and devices, such as a printer, modem, or scanner. Additionally, serial communication is commonly used for transferring data between two computers, such as for transferring files or for remote controlling a computer. Serial port debugging is also often used to perform code tracing and verification, helping detect bugs in code.

Another important feature of serial communication is the ability to use a serial console. This allows users to directly connect with a Linux terminal. Serial communication can be enabled by using the ‘stty’ command. This command is used to set up and configure the serial port connection. To enable the serial port connection, the following command has to be executed:

stty -F /dev/ttyS0 115200 

This command sets the serial port to 115200 bps, which is the most commonly used speed for serial communication. Once the serial port has been enabled, the ‘echo’ command can be used to send a command and view the output. The following command can be used to send a command over the serial port and display the output on the screen:

echo "command" > /dev/ttyS0

When sending data over the serial port, the data can be read by using the ‘cat’ command. This command can be used to read data from a serial port and display it on the screen. The following command can be used to read from the serial port and display the output on the screen:

cat 

In conclusion, Linux serial communication is a powerful tool for communication between two computers and is an essential part of many engineering, robotics, and electronic projects. By using the commands outlined in this article, users can easily send and receive data over a serial connection.

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