Using Serial ports on Linux

Using serial ports from Linux is easy and robust. Serial ports work in WINE as well. PuTTY has GUI configuration for serial ports.

apt install putty

Minicom or screen are less user-friendly in my opinion.

Regardless of which serial port program is used, add the user to the “dialout” group for non-root access to serial ports (one-time)

adduser $(whoami) dialout

Then logout and login.

PuTTY serial ports

Here’s an example PuTTY configuration for a 115200 baud serial port device.

PuTTY serial config

PuTTY main load screen

PuTTY for Windows get “64-bit MSI”

List hardware serial ports (motherboard or PCI card):

apt install setserial

setserial -g /dev/ttyS* | grep -v unknown

List the USB-serial adapter ports:

ls /dev/ttyUSB*