- Minicom Serial Port Change
- Minicom Serial Port Test
- Minicom Serial Port Settings
- Minicom Serial Port Connect
Active1 year, 2 months ago
I'm using minicom to test my connection on serial port.
in this way minicom opens its 'console-gui' and allow me to send data.
The main reason why you need any program like minicom to communicate over a serial port is that the port needs to be set up prior to initiating a connection. If it weren't set up appropriately, the cat and echo commands would not do for you what you might have expected. Using minicom in Linux to access serial devices. The audio track was recorded for the Linux in the HAM Shack podcast, and was added to the video later. Minicom is little command line based tool used to connect serial lines. In a more pragmatic definition minicom can be used to connect modems, routers and switch console ports via serial port. In a more pragmatic definition minicom can be used to connect modems, routers and switch console ports via serial port.
I send:
and obtain 'OK'
and obtain 'OK'
Ans so on.
I need to run a script that write to inifinity 'at' and read answer..
Any advice?
I evaluate other programs too.
Luca DavanzoLuca Davanzo14.2k1010 gold badges8181 silver badges116116 bronze badges
3 Answers
Minicom have -S option for executing SCRIPT at startup time,so made a script with your commands like
Run your script with minicom like
Also refer http://www.linuxcommand.org/man_pages/runscript1.html for minicom scripting
Rahul R DhobiRahul R Dhobi
pacholik6,05688 gold badges3434 silver badges4848 bronze badges
Ashvtosh GoelAshvtosh Goel
If only 'send' AT commands minicom just read the last AT command. You need the follow syntax inside script.txt if you want many AT outputs inside output.txt :
AlejandroAlejandro
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Active3 months ago
I am trying to connect minicom to a serial device that is connected via a USB-to-serial adapter. This is a PL2303 and from everything I've read no additional drivers are required. The device is recognised as a PL2303.
I'm a beginner at minicom. Is this the correct command to execute? Or do I need to configure something?
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
codingJoecodingJoe1,64688 gold badges3737 silver badges5656 bronze badges
10 Answers
First check with
dmesg | grep tty
if system recognize your adapter.Then try to run minicom with sudo minicom -s
, go to 'Serial port setup' and change the first line to /dev/ttyUSB0
. Don't forget to save config as default with 'Save setup as dfl'. It works for me on Ubuntu 11.04 on VirtualBox.
MatejMatej1,14411 gold badge1111 silver badges2424 bronze badges
You will need to set the permissions every time you plug the converter in.I use PuTTY to connect. In order to do so, I have created a little Bash script to sort out the permissions and launch PuTTY:
P.S. I would never recommend that permissions are set to 777.
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
McPartyMcParty
The serial port communication programs
moserial
or gtkterm
provide an easy way to check connectivity and modify /dev/ttyUSB0
(or /dev/ttyUSB1
!) settings. Even though there maybe only a single USB to RS232 adapter, the n
designation /dev/ttyUSBn
can and does change periodically! Both moserial
and gtkterm
will show what port designation is relevant in their respective pull down menus when selecting an appropriate port
to use.Check out help.ubuntu.com/community/Minicom for details on
minicom
.EkimEkim
I had fix this with
adduser *username* dialout
. I never had this error again, even though previously the only way to get it to work was to reboot the PC or unplug and replug the usb to serial adapter.RomanRoman
Long time reader, first time helper ;)
I'm going through the same
hellish
experience here with a Prolific USB <> Serial adapter and so far Linux is the easiest to get it to work.On CentOS, I didn't need to install any drivers etc.. That said,
dmesg | grep -i tty
ordmesg | grep -i usb
showed me /dev/ttyUSB0.screen ttyUSB0 9600
didn't do the trick for me like it did in OSX- minicom is new to me but it was complaining about lack of /dev/modem
However, this helped: https://www.centos.org/forums/viewtopic.php?t=21271
So install minicom (
yum install minicom
) then enter its settings (minicom -s
). Then select
Serial Port Setup
and change the Serial Device (Option A) to /dev/ttyUSB0, or whatever your device file is as it slightly differs per distro. Then change the Bps (Option E) to 9600 and the rest should be default (8N1 Y N)
Save as default, then simply
minicom
and Bob's your uncle.HTH.
Sam GreadlySam Greadly
I get get the same minicom error, 'cannot open /dev/ttyUSB0: No such file or directory'
Three notes:
![Arduino Arduino](/uploads/1/2/6/3/126375130/215955294.jpg)
- I get the error when the device attached to the serial port end of my Prolific Technology PL2303 USB/Serial adapter is turned off. After turning on the device (an embedded controller running Linux) minicom connected fine.
- I have to run as super user (i.e.
sudo minicom
) - Sometimes I have to unplug and plug back in the USB-to-serial adapter to get minicom to connect to it.
I am running Ubuntu 10.04 LTS (Lucid Lynx) under VMware (running on Windows 7). In this situation, make sure the device is attached to VM operating system by right clicking on the USB/Serial USB icon in the lower right of the VMware window and select Connect (Disconnect from Host).
Remember to press Ctrl + A to get minicom's prompt, and type X to exit the program. Just exiting the terminal session running minicom will leave the process running.
Peter Mortensen14.5k1919 gold badges8989 silver badges118118 bronze badges
MaxMax
I had the exact same problem, and it was fixed by doing a
Peter Mortensenchmod 777 /dev/ttyUSB0
. I never had this error again, even though previously the only way to get it to work was to reboot the VM or unplug and replug the USB-to-serial adapter. I am running Ubuntu 10.04 (Lucid Lynx) VM on OS X.14.5k1919 gold badges8989 silver badges118118 bronze badges
Joshua EtienneJoshua Etienne
I suggest that newbies connect a PL2303 to Ubuntu, chmod 777 /dev/ttyUSB0 (file-permissions) and connect to a CuteCom serial terminal. The CuteCom UI is simple intuitive. If the PL2303 is continuously broadcasting data, then Cutecom will display data in hex format
gatorbackgatorback23911 gold badge44 silver badges2424 bronze badges
Minicom Serial Port Change
I just got my GUC232A cable with a molded-in PL2302 converter chip.
In addition to adding myself and br to group
dialout
, I found this helpful tip in the README.Debian file in /usr/share/doc/bottlerocket
:This package uses debconf to configure the /dev/firecracker symlink, should you need to change the symlink in the future run this command:
dpkg-reconfigure -pmedium bottlerocket
That will then prompt you for your new serial port and modify the symlink. This is required for proper use of bottlerocket.
Minicom Serial Port Test
I did that and voila! bottlerocket is able to communicate with my X-10devices.
Peter MortensenMinicom Serial Port Settings
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DexterIsMyHeroDexterIsMyHero
Putty on ubuntuThere is no need to install the driver for PL2303So only type the command to enable the puttySudo chmod 666 /dev/ttyUSB0DoneOpen the putty.
Nikhil ParasharNikhil Parashar