PL2303X USB to Serial port
location: ubuntuforums.com - date: April 9, 2010
I am using ubutu versio 9.04 and am trying to talk to the new pl-2303x usb to serial port and am not being able. From searching the web I see that earlier versions of ubuntu had problem detecting the pl-2303 usb-serial port due to inability to differentiate between pl-2303 and pl2303x (bMaxPacketSize0 64). I wanted to find out if anyone has had success in using the pl-2303x with ubuntu 9.04. If so what exactly did you do.
USB PL2303 and serial port show a different behavior
location: linuxquestions.com - date: October 3, 2011
I wrote a program to control a serial device (power controller). Using it on an standard serial port, the device works fine, and it response properly to the commands sent. The communication relies on a stx-etx protocol (half duplex).
If I use an USB PL2303 usb-to-serial convertor, the serial device seems no longer to understand the commands issued over the serial link.
There is no handshaking mechanism used like CTS/DTS.
Not sure how to debug this. Could be a timeing issue (on the other hand the baud rate is only 9600 -- there is plenty of time and synchronization should not be an issue)
And advice what to look for ?
console login through RS232/serial port ?
location: linuxquestions.com - date: February 24, 2005
How do I configure my RS232/serial port to allow console logins from another machine?
My Linux-server-to-be does not have a keyboard or screen attached, and I'd like to be able to do a console login without running to my neighbour to borrow a screen. (All my other computers are laptops with no video in)
Can I use mgetty for this, or any other software that allows me to do a console login similar to how it's done on Sun machines and Cisco routers?
Thanks much in advance for any insight!
'Input/output error' on serial port
location: ubuntuforums.com - date: December 29, 2013
The objective is to calibrate my monitor (connected via VGA) with the colorimeter X-Rite Colormunki Display connected via usb.
The device is recognized :
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 002: ID 046d:c05a Logitech, Inc. Optical Mouse M90
Bus 003 Device 005: ID 0765:5020 X-Rite, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 1bcf:2c01 Sunplus Innovation Technology Inc.
but when I run the program (Argyll) I get the following error message:
dispcal: Error - tcgetattr failed with 'Input/output error' on serial port '/dev/ttyS0'
Sony Vaio SVE14A2C5E
Ubuntu 12.04 (p
The PCOS machines' Linux OS can be accessed through a serial port.
location: ubuntuforums.com - date: June 26, 2010
Guys anong say niyo dito.
This is a copy of the Final Report of the Joint Forensic Team submitted to the joint houses of Congress, indicating the findings of a forensic analysis of several PCOSmachines found in an Antipolo warehouse after the elections.Dated June 9, the report showed that the hash codes contrained in at least six of the machines did not match the official hash code published by the Comelec, suggesting that the machines are either unofficial or have been tampered with. (A hash code is a set of letters and numbers that is unique to a particular software program, serving as a means of identification similar to fingerprints or DNAto humans.)However, according to the same report, a Comelec representative "belatedly confirmed that the extracted hash code is the correct one."Further examination of the PCOS machines also reavealed no proof of the existence of digital certificates, contrary to claims by Smartmatic.The report said that Sma
Boot messages to serial port
location: linuxquestions.com - date: December 14, 2007
Hi, I am trying to boot an Ubuntu 7.10 Live CD, but my system is hanging somewhere along the way. I was wondering if there is a way to print the boot messages to the serial port, instead of to the monitor? This way I can see where it stops and maybe what happened just before that. Because when it hangs, the screen just goes blank. Thank you.
Dumb terminal (nontelnet!!) via DB9 serial port
location: linuxquestions.com - date: August 1, 2005
Am trying out Knoppix on my Toshiba Tecra 550CDT. I would like to use it a console for my Cisco CCNP study lab, which I've done under Windows running TinyTERM. Problem is that all the so-called "terminal emulators" I've found for Linux are actually telnet clients - going out my PCMCIA Ethernet card; and thus into the routers' Ethernet ports.
I need to get into the CONSOLE port; which the PC is connected to out its DB9 port (which Windows calls "COM1") via rollover (DB9-RJ45) console cable.
I can't seem to find a simple, non-Telnet-happy dumb terminal emulator for Knoppix that can make use of the DB9 port. Where do I look?
Problems addressing the serial port
location: linuxquestions.com - date: May 25, 2011
First of all let me introduce myself, I'm a retired (from work not Linux) user of Linux. I'm not a developer or programmer just a user.
I'm trying to install a packet radio system using Linux. The TNC is a Kantronics KPC3.
The issue I'm having is the communications programs I have tried (minicom and cutecom) do not talk to the TNC.
I'm using a computer that has a serial port and it is enabled in the BIOS.
I have added myself to the uucp group in an effort resolve this issue.
Any help would be greatly appreciated.
Read/write on UART (serial port)
location: ubuntuforums.com - date: July 27, 2010
does someone know how to read and write from/to UART with C++?
1) I can start a blocking read on UART process
2) I can start a writing to UARt process
3) UARt is read correcty (what I wrote is read).
BUT when i try to do the same things (1,2 and 3) in the same software (separating read and write with a fork or thread) I cannot write anything (read thread stay on waiting state for reading and write thread complete writing, but the two seems to have not interacttions...).
Thx in advance,
serial port open fails and takes 100% cpu
location: ubuntuforums.com - date: July 7, 2012
I've downloaded the source code for obdgpslogger and compiled it on my 12.04 machine.
Everything compiles fine, but when I run the obdgpslogger I have two problems when I run the program with this command
./obdgpslogger -s /dev/ttyUSB0 -b 9600 -a 5 -i temp,map,rpm,vss,throttlepos,sparkadv
1. The program/computer doesn't communicate correctly witht the ELM chip. I keep on getting 'timeout' for all the calls to write to the serial and wait for a response. Looking at the source code shows that the program is not getting a response back from the chip when it sends a command to it.
While it is in the openserial() function this is the stdout.
Opening serial port /dev/ttyUSB0, this can take a while
Successfully connected to serial port. Will log obd data
Successfully connected to gpsd. Will log gps data
Couldn't get ob
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