Comments on: How to enable USB-Serial Port adapter (RS-232) in Ubuntu Linux

By: cornell

cornell — Tue, 24 May 2011 17:37:58 +0000

I ran dmesg | grep usb to get the usb portion of the listing making it easier to determine if the adapter was connected. The usb portion of the dmesg listing was not at the end but stuck somewhere in the middle of the output. I am running Ubuntu 8.04. Got the adapter connected. Thanks.

By: madsatellite

madsatellite — Sun, 20 Feb 2011 14:50:00 +0000

Hi, I’m a newcomer and my eeepc doesn’t recognize when I plug my etrex (garmin gps) to the pc via a serial usb converter. So I followed the instructions but I do not know the meaning of the last command:

As you can see, the new serial port device is mapped to /dev/ttyUSB0. You can instruct Ubuntu to load this module automatically by include the line : “usbserial vendor=0×4348 product=0×5523? inside “/etc/modules” file.

what should I exactly type? Sorry if the question may sound silly, but I’m really a newcomer and don’t know how to get it work. Thank you very much for any answer!

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By: utoto

utoto — Wed, 19 Jan 2011 15:01:06 +0000

Rahul Agrawal-

check it out here:
http://www.libelium.com/squidbee/index.php?title=Uploading_XBee_firmware

Look at this spot:

4 – Make a symbolic link between ttyUSB0 and com2

type in terminal: ln -s /dev/ttyUSB0 /home/your_home/.wine/dosdevices/com2

5 – Add com2 port to X-CTU

By: utoto

utoto — Wed, 19 Jan 2011 14:58:07 +0000

Many thanks! It worked right off! Also with libelium’s help to add X-CTU com port. I have been trying to get X-CTU to see my USB com to configure XBee mod for days. Now I finally can get back to work. Nice!

I sometimes need to run 2 USB serial coms. Both being from the same manufacturer, they both show the same address. Even though they are USB0 and USB1 they both have the same numbers so get the same address. Any way to change address of one so both work simultaneously?

By: Rahul Agrawal

Rahul Agrawal — Sat, 27 Nov 2010 03:07:04 +0000

Hello guys ,
the information here is indeed really useful and i wouldnt have wasted a day looking for drivers , had i known it would work so easily .. However my question is that , I am trying to connect a zigbee through this serial port , so can i directly write /dev/ttyUSB0 instead of the file for the Serial (i.e. /dev/ttyS0
or do i need to convert it somehow ?

i am a beginner to Linux too so please forgive me if my questions are stupid.

Looking forward for some help !!

By: Cesar Masaharu Yokoyama

Cesar Masaharu Yokoyama — Thu, 02 Sep 2010 18:49:36 +0000

I’m having trouble configuring arduinoBT
I tried to do the same steps that this site but I had no success.
obs: I’m using Ubuntu 4.10 LTS 32bits
and the following error appears:
ubuntu32bits@ubuntu32bits-laptop:~$ lsusb
Bus 008 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 003: ID 03eb:2104 Atmel Corp. AVR ISP mkII
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 003: ID 03f0:3d17 Hewlett-Packard LaserJet P1005
Bus 002 Device 002: ID 5986:0137 Acer, Inc
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

command:sudo modprobe usbserial Atmel = 0x03eb RS232= 0×2104
FATAL: Error inserting usbserial (/lib/modules/2.6.32-24-generic/kernel/drivers/usb/serial/usbserial.ko): Unknown symbol in module, or unknown parameter (see dmesg)
dmesg
17308] usb 4-2: config 1 interface 0 altsetting 0 endpoint 0×82 is Bulk; changing to Interrupt
[ 297.317317] usb 4-2: config 1 interface 0 altsetting 0 endpoint 0×2 is Bulk; changing to Interrupt
[ 297.344460] usb 4-2: configuration #1 chosen from 1 choice
[ 1332.091589] usbserial: Unknown parameter `Atmel’
[ 1492.323389] usbserial: Unknown parameter `Atmel’
[ 1511.087014] usbserial: Unknown parameter `Atmel’
[ 1726.664078] usbserial: Unknown parameter `Atmel’
[ 1745.794821] usbserial: Unknown parameter `Atmel’
[ 1789.904073] usb 2-1: new high speed USB device using ehci_hcd and address 3
[ 1790.056180] usb 2-1: configuration #1 chosen from 1 choice

By: botNET

botNET — Thu, 10 Jun 2010 04:15:23 +0000

hope someone can help me – how can one statically assign usb serial so they map to the ttyUSBX everytime. i have 4 of these usb serial dongles and I have configured ser2net for specific tcp port to ttyUSBX (so i can telnet to the console of switches)… but once i restart PC; for eg usb serial dongle 1 which is ttyUSB0 may on next reboot may become ttyUSB1 and thus when i telnet to that port actually have consoled to another unit (as ser2net config file maps specific TCP port to ttyUSB). thanks for your help in advance.

By: adiholix

adiholix — Sat, 27 Mar 2010 16:52:25 +0000

good job!!!

Thanks!! it’s very usefull…. :))

By: rshuttle

rshuttle — Thu, 18 Mar 2010 02:24:29 +0000

thx dude, this kicks butt! I got my bit whacker up and running on ubuntu in no time flat thx 2 ur info.

http://www.schmalzhaus.com/UBW/index.html

By: mypapit

mypapit — Wed, 18 Nov 2009 17:43:02 +0000

George, usbserial is not supposed to be run from the command shell. rather, it should be included in the /etc/modules file, read the article slowly and carefully.

By: George

George — Sat, 17 Oct 2009 22:23:01 +0000

Thank you very much!

What could be the substitute of ‘usbserial’ in ubuntu 9.04?
this module is no longer available from the command shell.

By: mypapit

mypapit — Thu, 01 Oct 2009 03:40:52 +0000

the correct way is written on the blog post, as follows:

“As you can see, the new serial port device is mapped to /dev/ttyUSB0. You can instruct Ubuntu to load this module automatically by include the line : “usbserial vendor=0×4348 product=0×5523? inside “/etc/modules” file.”

By: Dave

Dave — Wed, 30 Sep 2009 18:00:32 +0000

Thanks! Your clear instructions were easy to follow, and they work!

So what is the right way to make this happen on every boot?

By: Nicolas

Nicolas — Tue, 28 Jul 2009 07:58:58 +0000

Thx for the intruction. I need it.

Gracias por la ayuda. La necesitaba.

By: Jonathan

Jonathan — Tue, 21 Jul 2009 19:12:44 +0000

newer versions of wine don’t have or use a wine.conf or winerc…

from the WineHQ site (http://www.winehq.org/docs/wineusr-guide/misc-things-to-configure), here’s how you do it:
ln -s /dev/ttyUSB0 ~/.wine/dosdevices/com1

or…com2, com3, etc.

By: Sp!ke

Sp!ke — Fri, 10 Jul 2009 11:43:57 +0000

@Toby

I’m assuming your talking about under wine?
If so it’s very easy, add the following to wine.conf

[serialports]
Com1=/dev/ttyUSB0

Obviously you can change Com1 to 2 3 4 etc

By: Toby

Toby — Mon, 29 Jun 2009 14:11:10 +0000

I was windering is any body knows how the ttyUSB0 is related to a com port or how to set

By: Andrew

Andrew — Thu, 02 Apr 2009 20:18:04 +0000

Amazing info.

I was wondering if somebody could tell me how to map ttyusb# to a ttys# and make it persistant.

By: yehdev_cc

yehdev_cc — Thu, 29 Jan 2009 22:02:12 +0000

Thanks very much… I really needed it… please some more of this fine tricks.. much appreciated.

By: Hu

Hu — Fri, 16 Jan 2009 16:14:36 +0000

Great instruction, it did help me a lot. Thanks.

By: Oldbitcollector

Oldbitcollector — Fri, 09 Jan 2009 00:27:53 +0000

Instructions were “spot-on” for install my Belkin USB/Serial adapter. Thank you!

By: Rainy

Rainy — Wed, 31 Dec 2008 01:15:17 +0000

Perfect instructions to get my USB serial converter running.

Thanks

By: david lee

david lee — Fri, 31 Oct 2008 18:35:24 +0000

“How to enable USB-Serial Port adapter (RS-232) in Ubuntu Linux” is very well written and enabled me (complete newcomer) to get COM2 recognised by the SeaClear.exe navigation program running under wine. Unfortunately the prog. is not receiving and NMEA input from my GPS, and any advice on what I should do next would be appreciated. Other problem – using nano I added the “usbserial vendor…” line to the “/etc/modules” file, but couldn’t work out how to save the addition. Could you help, please? Thanks a million.