Users Manual

4. Establish Serial Connection with ESP32-S2-MINI-1 &
ESP32-S2-MINI-1U
ls󰲧/dev/tty*
MacOS
ls󰲧/dev/cu.*
4.4. Adding User to dialout on Linux
The currently logged user should have read and write access the serial port over USB. On
most Linux distributions, this is done by adding the user to dialout group with the following
command:
sudo󰲧usermod󰲧-a󰲧-G󰲧dialout󰲧$USER
on Arch Linux this is done by adding the user to uucp group with the following command:
sudo󰲧usermod󰲧-a󰲧-G󰲧uucp󰲧$USER
Make sure you re-login to enable read and write permissions for the serial port.
4.5. Verify Serial Connection
Now verify that the serial connection is operational. You can do this using a serial terminal
program. In this example we will use PuTTY SSH Client that is available for both Windows
and Linux. You can use other serial program and set communication parameters like below.
Run terminal, set identified serial port, baud rate = 115200, data bits = 8, stop bits = 1, and
parity = N. Below are example screen shots of setting the port and such transmission
parameters (in short described as 115200-8-1-N) on Windows and Linux. Remember to
select exactly the same serial port you have identified in steps above.
Espressif Systems
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Sep. 2020