Using Serial ports on Linux

Using serial ports from Linux is easy and robust. Serial ports work in WINE as well.

  1. PuTTY has GUI configuration for serial ports.
   apt install putty

Minicom or screen are less user-friendly in my opinion. 2. 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.

{% include gallery caption=“PuTTY configuration for Red Pitaya, Intel Edison and Beaglebone Black serial port.” %}


Find serial ports

  • 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*