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Ctrl+A, z, x will disconnect and close the application. To quit, similar to Screen, the commands are accepted through key commands. Minicom will provide more output when connected, in my case: Welcome to minicom 2.7.1įrom here you can type into the terminal to send to connected serial device. To connect to the serial device at 9600 baud with minicom, from the terminal: minicom -b 9600 -D /dev/ttyUSB0 Minicom is a serial communication program that has a more user-friendly interface than screen, however with more options comes more choices. Then 'y' when prompted to kill the session. To quit screen and close connection: ctrl+a, k. To disconnect from the session ( while leaving it open ): Ctrl+a, Ctrl+d, you can then use the following to reattach to the session. Screen commands consist of "C-a" or ctrl+a (holding down the control key, and then pressing the 'a' key, then releasing both), to enter the command input mode, then commands may be entered with another key stroke. To connect to the serial device at 9600 baud (one of the more common buad rates) run the following command in the terminal: screen /dev/ttyUSB0 9600įrom here you can type text into the terminal to transmit to the connected device, or read output from the device. Screen is a full-screen window manager capable of connecting to serial devices. This will output something similar to: /dev/ttyUSB0 Screen This indicates the serial adpater can be accessed at /dev/ttyUSB0Īlternatively, you can run the following command to print out the newest created serial adapter: ls -tr1 /dev/tty* | tail -n 1 Look for output like: usb 1-2.2: pl2303 converter now attached to ttyUSB0 There are a few ways to find the serial adapter connected to the computer.įor USB serial devices like our PL2303-DB9 USB Serial Adapter, connect the adapter to the computer, then open a terminal and run: dmesg | tail Three ways to send and receive data from Serial devices in Linux Identify the serial device