* Entry parameter: fd File descriptor port: serial password (ttyS0,ttyS1,ttyS2) * Function: Open the serial port and return the description of the serial device file Opening the serial module has that and some components.ġ > Call the open() function to open the serial port and get the device file descriptor of the serial portĢ > Obtain the state of serial port and judge whether it is blocked or notģ> test Is the open file descriptor a terminal device? O_NDELAY: Indicates that you do not care about the state of the DCD signa l line (whether the other end of the port is activated or stopped).ģ. If this flag is not used, a task input (eg: keyboard stop signal, etc.) will affect the process. O_NOCTTY: This means that a terminal device is opened and the program will not become the control terminal of the port. For the open operation of the serial port, the O_NOCTTY parameter must be used. Call the open() function to replace the serial device. In Linxu, serial devices are accessed through serial terminal device files, that is, by accessing / dev/ttyS0,/dev/ttyS1,/dev/ttyS2.Ģ. Since the serial port is in the linux It is regarded as a file, so it should be opened before it is operated.ġ. Linux The following serial port programming and those components Have a program you prefer that's not listed? Put it in the comments.I. Now, you can use the GUI to configure and open the serial port device.

picocom sudo apt-get install picocom picocom -b 115200 -r -l /dev /ttyUSB0 cutecom You can then follow the menu options to configure the serial port and get on your way. sudo apt-get install minicom sudo minicom -s

This is a console based program that's tried and true, but not easy to use for the beginner. sudo apt-get install screen screen /dev /ttyUSB0 115200 minicom This is a console based program that's not easy to use for the beginner, but it's very powerful. This will bring up the putty GUI an you can then select serial, enter the device path '/dev/ttyUSB0', and enter the baudrate. This is a GUI that's pretty feature rich. I tend to favor both Putty (runs on Windows and Linux) and screen, but a couple others are listed here as well. I figured I'd give a rundown of serial terminals I regularly use on Linux to access consoles on embedded boards through a serial port.

Ufs explorer linux serial terminal