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1
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1answer
185 views

Unable to connect to serial device; no /dev/ttySx

I wrote a Java application that connects to the serial port of the GSM modem. On Windows the serial ports have names like COM3, but in Linux Redhat 6.0 I had to switch to something like ttySx (X is ...
1
vote
0answers
175 views

Changing default line discipline at kernel level [closed]

How to assign line discipline to particular serial port at kernel level?
3
votes
3answers
2k views

cat corrupts serial port data

I have an application which writes some bytes to a serial port. When I do cat /dev/ttyS0 to see what is being transferred, I find that the data is corrupted by the cat command. Is there any other way ...
3
votes
1answer
1k views

Redirect linux serial console

I want to redirect my serial port while telnet session in linux. I have an embedded Linux box which is has a serial console. After I do a telnet to the box, I can type in both the serial console as ...
2
votes
2answers
1k views

New to using serial console and trying to log into embedded system

I have two PC Engines Alix 2d2 which I've been given and I'm trying to install an (BSD or Linux based) OS on. Currently one has a version of openWRT (the other had openWRT until I formatted the CF ...
2
votes
2answers
1k views

debian does not detect serial PCI card after reboot

I have installed a PCI card with two serial and one parallel port on it. the chipset is MCS9865. I downloaded the latest driver(V1.0.12) from here. I ran make and make install. now the two serial ...
1
vote
0answers
176 views

Where are the logs for the serial port (power save modes, specifically)

I'm running a system with Ubuntu 10.10 (pretty old, I know, but it has to be that one), with all its packages updated to the latest version supported (the distribution is not supported anymore so, to ...
3
votes
1answer
884 views

Write data to both a file and a serial port — can I use tee?

I am trying to take the input from a serial port and write it to a file and also then read the file and send it back out the serial port to the host computer. A coworker suggested using the "tee" ...
6
votes
2answers
3k views

Unexpected results testing serial loopback using echo and cat

So I have a standard RS232 serial port that is looped back to itself by simply running a wire from Tx to Rx. I'm testing loopback by running echo and cat in two separate terminals: cat /dev/ttyS1 ...
3
votes
1answer
10k views

How do I access a USB serial port without an entry in /dev?

I have a USB to serial adapter based on the SiLabs CP2101 chipset. I'm trying to use it with Debian 5.0 Lenny (armel architecture). I seem to be able to get the proper kernel module to recognize the ...
10
votes
3answers
4k views

Telnet send Ctrl-C

I use telnet to connect to a terminal server, which proxies the traffic to a RS-232 port. Unfortunately when using some of the devices it is not possible to send the ctrl-C character (0x03). Instead ...
4
votes
1answer
15k views

reading from serial from linux command line

I have a serial port device that I would like to test using linux command line. I am able to use stty and echo for sending commands to serial port, but when device responds I have no way of reading ...
9
votes
2answers
3k views

set baud speed for tty

How do I set the baud speed for a specific tty (in this case a serial port)? I tried using stty -F /dev/tty.iap ispeed 19200 But get the error Invalid argument for every speed I try (2400, 4800, ...
6
votes
3answers
2k views

Why does awk do full buffering when reading from a pipe

I'm reading from a serial port connected to a gps device sending nmea strings. A simplified invocation to illustrate my point: $ awk '{ print $0 }' /dev/ttyPSC9 ...
4
votes
2answers
980 views

Buffer overrun on Fedora 16 serial

I got a brain smashing problem with Fedora 16 and my serial port. I use the serial to monitor an STB on which I'm developping. The STB runs on Linux and when booted, I launch the program I'm working ...
2
votes
1answer
157 views

Make screenshots of Ti-calculator screen

I want to connect a TI-84 Plus Calculator to my PC and take screenshots of the calculator display. Under windows this is possible using the TI-connect software. However is there also a way to do this ...
2
votes
2answers
1k views

how to re-enable input on a serial console

I have an old router which runs Linux and I'd like to have a serial console on. This used to work fine, but after a firmware update, I can now only get output on the console and cannot give any input ...
14
votes
6answers
42k views

How to connect to a serial port as simple as using SSH?

Is there a way to connect to a serial terminal just as you would do with SSH? There must be a simpler way than tools such as Minicom, like this $ serial /dev/ttyS0 I know I can cat the output ...
3
votes
1answer
444 views

Low-level serial configuration?

I'm using embedded Linux platform, kernel is 2.6. I'm using stty command to configure ttyS* high level. The problem is that when I want to turn hardware flow control on: stty -F /dev/ttySA0 crtscts ...
3
votes
3answers
7k views

Read/Write to a Serial Port Without Root?

I'm writing an application to read/write to/from a serial port in Fedora14, and it works great when I run it as root. But when I run it as a normal user I'm unable to obtain the privileges required to ...
0
votes
1answer
865 views

Cloning/Splitting a serial port (COM) port in Ubuntu

Everything is working with my serial port. I have connected my FTDI converter into my computer, set my COM port... ln -s /dev/ttyUSB0 ~/wine/dosdevices/COM1 But now I would like to "clone" this port. ...
5
votes
5answers
16k views

How can I monitor serial port traffic?

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 ...
3
votes
1answer
337 views

NetBSD Serial Port Gateway

I have an old Toshiba Satellite 4015CDT, with Pentium II MMX, 32MB RAM, 4GB HDD. It also has one USB 1.0 port, parallel and serial ports, a 3.5" floppy drive and a CD-ROM drive (almost dead). Also, ...
3
votes
3answers
6k views

setserial /dev/ttyS4: Cannot set serial info

So, I have a board with 6 hardware serial ports: the first 2 on the ETX bus and the last 4 on the ISA bus. The following configuration is how it is supposed to be: /dev/ttyS0 port 0x03F8 irq 4 ...
2
votes
2answers
683 views

RJ-45 <-> RS-232, can I substitute the RS-232 side and abuse my Ethernet port as COM port?

We have a PCIX board (with MIPS CPU) from some vendor and it has an RJ-45 jack on the "board-side", where the cable has an RS-232 plug on the other side. The expected protocol is clearly the same as ...
4
votes
2answers
620 views

RS232 chat. Simplest way?

I'm working in a project in which I will have to deal with serial communications. For testing, I want make to 2 computers speak to each other (with my interaction) via RS232. Will the next thing ...