First of all, let's assume that you have already connected the serial port of your Linux box to a switch console port via a serial cable. To connect a Linux terminal to the serial port of your Linux system, you can use a command-line screen manager tool called screen. Install screen on Linux. To install screen on Debian, Ubuntu or Linux Mint. Programmable timer software to control relays by RS232 serial port, USB or Network interface. It controls relay automatically during the appointed period of time. The start time and end time can be set recurrence daily, weekly, monthly, yearly or during some days.
Some motherboards come with a serial port with no cable or external serial DB connector. Someone may build a PC from this and decide not to use this serial port. There may be a 'serial' connector and label on the motherboard but no ribbon cable connects to its pins. To use this port you must get a ribbon cable and connector. Jan 28, 2010 Linux offers various tools. Linux uses ttySx for a serial port device name. For example, COM1 (DOS/Windows name) is ttyS0, COM2 is ttyS1 and so on. Adblock detected ? My website Continue reading 'How To Check and Use Serial Ports Under Linux'. Cutecom is a graphical serial port communications program, similar to Minicom. The Windows equivalent is Hyperterminal. It's available for all versions of the Ubuntu family. Install via Software Centre. Open up Software Centre and enter 'cutecom' in the search box. Click on the 'MoreInfo' button and select the 'Add-on' Lrzsz box so that it's. Apr 01, 2011 Cutecom is a graphical serial port communications program, similar to Minicom. The Windows equivalent is Hyperterminal. It's available for all versions of the Ubuntu family.
Active13 days ago
Is there any port monitoring tool to watch the packets written on the port? I especially want to check if my program written in Java works so I need some kind of tool to see if my little application is writing the messages to the port. How do I do this?
Michael Mrozek♦
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DeepakDeepak
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9 Answers
I found projects called Linux Serial Sniffer, jpnevulator, and Moni. The first two look like they do exactly what you want. The last one calls itself a monitor, but it actually looks like a standard serial communication program.
Shawn J. GoffShawn J. Goff
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socat is a tool to connect (nearly) everything to (nearly) everything, and tee can duplicate streams.
In your usecase you could connect your serial port /dev/ttyS0 to a PTY /tmp/ttyV0 , then point your application to the PTY, and have socat tee out Input and Output somewhere for you to observe.
Googling 'socat serial port pty tee debug' will point you to several examples, one being:
The files
in.txt and out.txt will then contain the captured data.
This has been confirmed to work by commenters (@ogurets).
Alex StragiesAlex Stragies
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I don't think the serial driver has any tracing functionality that would allow you to watch packets. You can use
strace to observe all the reads and writes from your application:
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interceptty does that job: Unix book pdf download.
or, with a nice output format and with configuring the backend device, and with line buffering:
and then connect with your programme to
/dev/ttyDUMMY .
Golar RamblarGolar Ramblar
MikeMike
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When I debug interaction of my application with a serial port, I use moserial.
Michael Mrozek♦
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Renat ZaripovRenat Zaripov
Have a look at ttyUSBSpy.It is on alpha stage, but it works.
Cristian Ciupitu
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user37414user37414
minicom is missing from the list of tools to monitor serial ports. Use it as for example to listen to arduino device:
minicom --device /dev/ttyACM0 --baud 9600
B.KocisB.Kocis
Thanks to Gilles's answer!
Sorry, I will explain..
Nota: I run them by using
script -t so I could replay the whole and trace timing executions.
F. HauriF. Hauri
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Active5 months ago
I am running Debian 7 (Linux Crunchbang) and wanted to use The Arduino IDE to program my Arduino UNO. To do that I installed the package
arduino . When I started the Arduino I was asked to add my user to the dialout group. So I did with sudo usermod -a -G dialout <my-username> .
However when I start the Arduino IDE using
arduino in the commandline the IDE opens but I am not able to load my program to the Arduino. The error message is 'Serial port COM1 not found. Did you select the right one from the Tools > Serial Port menu?' And when I went to select the Serial Port, the option 'Tools > Serial Port' is greyed out.
I thought it is because I did not grant read and write permissions on my usb port (ttyACM0). So I did Braiam
sudo chmod a+rw /dev/ttyACM0 but the option is still greyed out.
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MoonlitMoonlit
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16 Answers
chdmod works for my under debian (proxmox):
For installing arduino IDE:
Add the user to dialout group:
Restart Linux.
Try with the File > Examples > 01.Basic > Blink, change the 2 delays to delay(60) and click the upload button for testing on arduino, led must blink faster. ;)
Braiam
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user3104260user3104260
sudo arduino is the only way I get the Arduino IDE working (serial port and upload) on ubuntu 12.04 (64)Indeed the serial port to use is /dev/ttyACM0 in my case too.The other two (ttyS4 and ttyS0) gave an error when trying to upload to Uno.Have fun
user3878345user3878345
Close all instances of the arduino IDEopen ~/.arduino/preferences.txt and look for the line:
and change it to your port:
you may have to log out for it to take effect
chaggychaggy
Try Disconnecting the usb and plugging it back in. Its only grayed out because the ide cannot find any com ports that the uno has been plugged into.
another solution is to try all the com ports and see which one works.
finally if all fails try restarting your computer.
user2375589user2375589
open $arduinoHome/arduino in text editor and modify last string:
to
(set property gnu.io.rxtx.SerialPorts to /dev/ttyACMN,where ttyACMN is name of serial port which you use)
it may temporary fix bug in rxtx library. helped me to upload sketch with arduino1.0.5 IDE.
Maybe would helpful for someone.
SildSild
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In my case I solved this issue by uninstalling the version of Arduino that I installed via
apt-get and instead installed via the official website.
With the latest version of Arduino I didn't have the problem described on Ubuntu 18.04. Overwrite in microsoft word.
Philip KirkbridePhilip Kirkbride
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In my case this turned out to be a bad USB hub.
The 'lsusb' command can be used to display all recognized devices. If the unit is not plugged in the option to set the speed will be disabled.
The lsusb command should output something like the string 'Future Technology Devices International, Ltd Bridge(I2C/SPI/UART/FIFO)' if your device is recognized. Mine was an RFDuino
JayJay
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install rx-tx lib for java run this command in terminal
output port
help regconize usb device
Rakibul HasanRakibul Hasan
So I did with
sudo usermod -a -G dialout <my-username> .
You need to log out after you add yourself to a group so those changes are applied. Just log out and log in again and the menu should be available.
BraiamBraiam
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Same comment as Philip Kirkbride. It wasn't a permission issue, but using the Arduino IDE downloaded from their website solved my problem.Thanks!Michael
Michael OpdenackerMichael Opdenacker
Ubuntu Serial Terminal Program
The following steps install the IDE and remove the error
java.lang.NullPointerException thrown while loading gnu.io.RXTXCommDriver which usually comes with arduino installed with apt-get command in Ubuntu.
Install the IDE
for removing java error in IDE
Ubuntu Uart Tool
This also shows the Serial Port which was grayed out due to the error.
Zoe the transgirl
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Ubuntu Serial Port Terminal Program
Sheetal guptaSheetal gupta
For a Windows solution I've found that disabling and re-enabling the Arduino in Device Manager, then restarting the Arduino IDE does the trick without fail (no unplugging necessary). Why this error occurs in the first place is beyond me. Perhaps the corresponding method for Linux will fix your problem.
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Slightly related (not really), I had an issue with an AVR board a while back which was fixed by setting the device to a new COM port in the driver settings. Again, however you linux bunnies do it, I'm sure it'll be cookies and cream.
Cheers brother,
Eddie SpaghettiEddie Spaghetti
I encountered the same issue. My solution was to install and use java7:
Select the number referring to the java-7 path.
Tones29Tones29
You probably don't have the correct permissions. Try adding yourself to these groups.
Then restart your system and check if you got added to the groups.
Good Luck!
Numbers SanNumbers San
Try to run as an administrator..Run terminal, type sudo arduino, type your root password, and.. :)
JunsaJunsa
I found this question while trying to troubleshoot the same 'grayed out' port menu problem, except on a windows machine.
Linux Serial Tools
For anyone who finds this question in the same situation, I fixed it by right clicking and choosing 'Run as Administrator'.
funrollfunroll
Ubuntu Serial Port Tool Price
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protected by Community♦May 5 '15 at 8:57Ubuntu Serial Port Tool
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