How do I connect to TTY/COM (/dev/ttyUSB0)?

Question

I am running Ubuntu for the first time by booting from a USB drive. Now I have plugged in a USB-to-serial converter which has been recognized and automatically added as /dev/ttyUSB0.

How do I access /dev/ttyUSB0?

score 99 · Accepted Answer · edited May 07 '11 at 12:30

99

Use one of screen's lesser known features:

screen /dev/ttyUSB0

edited May 07 '11 at 12:30

Marco Ceppi

48,827

answered May 07 '11 at 12:08

Douglas

1,022

score 17 · Answer 2 · answered May 22 '16 at 19:52

17

You could use tio - a simple tty terminal I/O application:

tio /dev/ttyUSB0

See http://tio.github.io

answered May 22 '16 at 19:52

Martin Lund

179

score 13 · Answer 3 · answered Apr 15 '13 at 08:55

13

busybox microcom -t 5000 /dev/ttyUSB0

Source: http://forum.xda-developers.com/showthread.php?t=1471241

answered Apr 15 '13 at 08:55

Sepero

4,627

score 8 · Answer 4 · edited Sep 04 '18 at 14:56

You can use picocom, it is a minimal dumb-terminal emulation program. Basic usage is something like this (change 11520 to the desired baud rate):

$ picocom -b 115200 /dev/ttyUSB0

You have all the options you may want from a dumb-terminal program, like stop bits, parity, local echo, carriage return / line feed / backspace / delete / tab translation, X/Y/Z-modem and ASCII transfer integration, etc.

See man picocom and picocom --help for further information.

score 6 · Answer 5 · edited Oct 15 '12 at 05:18

you can use ckermit also. It should be in the repository. After installing it create a file in your home directory called .mykermrc then add the 5 following lines:

set line /dev/ttyUSB0   
set flow-control none  
set carrier-watch off  
set speed 115200  
connect

parameters can be adjusted as necessary.
save the file.
to start it

sudo kermit

score 5 · Answer 6 · answered May 07 '11 at 11:24

5

You can use putty. Its an ssh/serial/telnet client for Windows and Linux. You can download it from http://linux.softpedia.com/get/System/Networking/PuTTY-347.shtml

answered May 07 '11 at 11:24

binW

13,194

score 3 · Answer 7 · answered Jan 04 '20 at 13:38

3

Or

minicom -D /dev/ttyUSB0

If you need to configure it first, then

minicom -s

If you're wondering where's the meta key in MacOS, you will need to plan an escape. For other options, -h for help.

answered Jan 04 '20 at 13:38

sean

131

Chef Pharaoh · Answer 8 · 2019-11-27T16:17:42.300

2

I was using puTTY to connect to the serial ports. But don't forget to add your user to dialout: sudo adduser <username> dialout then reboot the system.

After that, you can use puTTY for serial connections such as /dev/ttyUSB0.

edited Nov 27 '19 at 16:17

answered Aug 29 '14 at 19:54

Chef Pharaoh

219

score 2 · Answer 9 · edited Nov 27 '19 at 10:50

Needed Mint 17.1 to talk to my Arduino, after a little chasing around, it turns out that your user must be part of the dialout group to use the tty. This should apply to Ubuntu as well. You can do so either by running the command:

sudo usermod -a -G dialout username

Or graphically, by using:

Administration → Users & Groups → Manage Groups

In which case you would go to the line for dialout, check the properties to ensure that username is ticked, if not username must be added.

This worked for me and by the look of lots of posts others have had the same problem.

score 1 · Answer 10 · answered Aug 25 '20 at 10:04

1

Tio without GUI or CuteCom with GUI.

answered Aug 25 '20 at 10:04

Honghe.Wu

417

score 0 · Answer 11 · edited Apr 24 '13 at 06:53

0

Using Lucid and a Dynamode USB to RS232 cable:

Plugged it in
ran kermit
set line /dev/ttyUSB0    <<-- mind the capitals/lowecase
connect
set speed 9600
...

and successfully connected to an RS232 port on an OpenVMS server.

edited Apr 24 '13 at 06:53

Radu Rădeanu

174,089
51
332
407

answered Apr 24 '13 at 05:22

Henry Crun

1

How do I connect to TTY/COM (/dev/ttyUSB0)?

11 Answers11

Linked