The serial interface or serial port, also known as RS-232 is a communication port used to connect modems, mouses, some printers, scanners and other hardware equipment.

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How can I access putty from linux terminal?

I'm trying to configure my cisco 2950 switch and I need to use putty on linux. Im not used to using linux but I've been told that putty is built in to linux terminal. I have my serial console cable ...
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How to quickly determine which process (if any) listens to a serial port

I am looking for a command to see the process listening to a port, e.g. /dev/ttyS0 (with root rights on a Linux system). I can do that with lsof /dev/ttyS0 but this is really too slow. Also, I ...
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Determining if I need a 32 bit or 64 bit driver for OSX 10.7.2

I'm looking to download an ftdi driver for OSX 10.7.2. I will be using it for work I'm doing in python 2.7.x, using pySerial. I have no idea how to determine whether I need to download the 32 or ...
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Virtual COM Port Using usbser.sys Keeps Dropping

I have a C# wpf application that is communicating with a device via a virtual com port over USB. This device is using the usbser.sys driver. Everything works normally as expected and communication is ...
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132 views

IrDA adapter - how to enable speeds less than 9600

I need to use infrared usb adapter tekram IR-410W under win8. unfortunately it doesnt create virtual com ports. another trouble is IrCOMM driver doesnt work under win7/8 i need to communicate to ...
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Gigaware USB to serial adapter not working on Windows 8

I'm trying to use a Gigaware USB to serial adapter on my new computer. It worked fine with Windows Vista and XP, but not on Windows 8. It's not working and I get this message under device properties ...
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332 views

Mount serial port through ssh connection (Mac/Linux)

I'm working on a MacBook Pro under mountain lion and I would like to mount serial device connected (/dev/ttyUSBx) on a Linux PC under Ubuntu 12.10 through SSH. I tried with sshfs to mount /dev ...
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Terminal emulator in windows which can store commands

Is there any good terminal emulator program which will help me save commands so I dont have to type them again and again . It is for communicating with a serial port (COM port) in windows and I have ...
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338 views

Displaying / Setting USB BlueTooth Buffer Size

In Windows 7 there is a sequence of mouse clicks on various icons which will display the buffer size of a given Com Port. I can't remember that sequence at this moment. I know I did it once before. ...
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717 views

Is DB-25 port Serial or Parallel?

I would like to know whether the DB-25 port is a serial or parallel port. These ports are otherwise known as printer ports, aka LPT port. I'm very confused about this since, according to Wikipedia, ...
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This device cannot start. (Code 10) - Gigaware USB - Serial Adapter

I'm trying to use a Gigaware USB -> Serial adapter that worked fine on Windows XP on Windows 8. It's not working and I get This device cannot start. (Code 10) A device which does not exist was ...
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84 views

Serial cable vs USB-to-serial adapter

I have a device with RS-232 and a control program on PC. It works fine via serial cable but with usb-to-serial some functions don't work correctly. Why usb-to-serial doesn't work? I tried to change ...
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549 views

Serial com issue with virtual box

I have an issue in using the serial port with virtual box. My host system is Windows, my guest system is ubuntu. I have setup a serial connection between the local Windows and another distant PC, ...
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64 views

Forwarding Data from COM Port via Ad-hHoc Network on Linux

I'm new to Linux and I'm trying to setup an ad-hoc network between two computers in order to send data coming from a COM port on one computer to the other. Currently I'm running Lubuntu 12.04 on both ...
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3answers
847 views

Why do some serial interfaces have many pins?

Various hardware connectors that are dubbed "serial", e.g. USB and PCI-express, have many more than 2 pins/wires. In fact even the good old "serial port" has them. But since they are serial, not ...
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354 views

Is there free software that can convert serial input messages to TCP/IP packets?

There is a serial port that can receive text messages from the external device. Now I want to pass these messages to a special software. But that software can only receive TCP/IP packet. For example, ...
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PCIe x1 serial card suddenly stops working

The Perpetrating PC... MB:MSI Z77A-GD65 OS:Windows 7 Pro CPU:Intel Core i5-3570k Ivy Bridge Memory:16gig G.Skill Ripjaw PSU:Cooler Master Silent Pro 700w HD:1TB WD Cavier black Rosewill rc-300e ...
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280 views

Send <esc>a with picocom

I have connect a USB serial adapter to my Linux box. I'm trying to connect to the device with picocom and I have to send an escape sequence like <esc>-a (hex: 1B 61) How to do this, ...
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How can I log in my alteon2424?

I was given an old alteon 2424. Pluging a serial cable on the console port allows me to see it booting. I can choose at boot between 2 images in nvram by pressing ctrl o. Both images talk about ...
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Serial Communication vs Device Drivers

My understanding is that serial communication is for direct CPU-to-CPU (or microcontroller-to-microcontroller) communication along a serial bus. My understanding is that a device driver is for ...
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1answer
166 views

How to make a terminal (running in Atari emulator on Mac) talk to a telnet BBS?

There are a number of Atari ST BBSes still running today, available via telnet. I connect to some of these occasionally using SyncTerm on my Mac. It would be even better to use an ATARI terminal ...
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USB-to-Serial showing gibberish at 115200 Baud

I've got a serious problem which drives me crazy because I tried everything I could think of. First of all, I made a video: http://youtu.be/boghkuq7L_s but please read the following text for more ...
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What is the minimum delay between two consecutive RS232 frames?

I have been working on creating a UART on an FPGA. I can successfully transmit and receive single characters typed on PuTTY. However, when I set my FPGA to constantly write a large sequences of "A", ...
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Again, how can I get the data sent to printer by attaching linux pc to the printer side of the wire, hen print it somewhere else?

The similar question was asked by davidb, however the circumstances are different. I have a device with the 9-pin RS-232 port and an ancient printer connected to that device. I need to replace the ...
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Simulate serial printer on pc

I have an old lab device which prints it's result to a serial printer. I need to replace the serial printer with a computer. I have connected the device's 9 pin serial port to the computer's serial ...
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Piecing together low-powered hardware for an RS-232 terminal server

I'm working on reconstructing my Cisco lab for training/educational purposes and I found that the actual terminal server I have is dead. I have a couple of 8-port PCI serial cards which would be more ...
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509 views

Sniff data on serial ttyS0 by virtualbox COM

I am running VirtualBox under linux. Gues OS is Windows XP. I have an IR transmitter connected to serial port, (yes the old kind DE-9), on my box and added the following in VirtualBox "Serial Ports": ...
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How can I tell if my serial card supports RS-485?

It's a Rosewill RC-300 1 Port serial PCI adapter. From http://www.newegg.com/Product/Product.aspx?Item=N82E16815166003, it says "The Rosewill RC-300 features a 9-pin RS232 serial port to add..." so I ...
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452 views

How to avoid modifying permissions on a file every time I start my computer

My serial port is located at /dev/ttyUSB0, and every time I want to access it after waking up my computer or starting it (Ubuntu 12.04), I have to run sudo chmod 777 /dev/ttyUSB0 to grant myself ...
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Is there any way to check which baud rates are supported on a serial device?

Is there any way to check which baud rates are supported for a serial device on Linux? I've poked around the /sys/class/tty/ttyS0 directory, but I can't see anything in there that lists this type of ...
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Sending a file to uCLinux

I have a board running uClinux, and I need to send a file to it, but I'm not sure how... I have a RS232 port, and Ethernet port with an IP address at my disposal, I can telnet to the board, but ...
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Using a named pipe to simulate a serial port on a VMware virtual machine (linux host and client)

Trying to write a python program to create a simulated data stream and feed it, through a named pipe, to a VMware virtual machine. The host is running Ubuntu 11.10 and VMware player 5.0.0. The Vm is ...
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How to setup a serial terminal for DM500HD?

I need to connect to a Linux based STB (set-tob-box) over an emulated serial terminal. I'm not sure how to setup this connection. The manufacturer has given me this number to use: 115200/8N1. What ...
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How can you test communication on a COM/Serial port?

We have a OHAUAS defender 5000 series model T51P Weighting scales with a COM port. if we connect this to a PC we should be able to get the weight on the computer by sending a command to it. Is there ...
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1answer
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Is it possible to make a persistent USB serial port regardless ofthe existence of the USB device?

USB serial ports, especially devices which emulate serial ports, don't quite behave the same as old serial ports, which causes a few problems with some software. old serial ports, always existed, ...
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1answer
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How to connect to Ubuntu using Serial Port?

I am using VMware and I want to connect to Ubuntu VMs via serial port. I am connecting both using pipe as referred in this website https://www.vmware.com/support/ws3/doc/ws32_devices3.html How do I ...
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Windows 7 CDC-232 Drivers Issues

This is the single most infuriating issue I have with Windows ever since XP. I recently built a new system and bought Windows 7 32bit. I am an electrical engineering student and I have a whole host ...
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Serial port splitter (1 output device -> 2 computers)

Does anyone know how I can split a serial cable so the output from one device is connected as inputs to two different computers? I try to connect the (-)(+)TX at the same to the two computer... I get ...
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can a bad cable break serial port

I had a really strange experience last week, I am not quite sure if this is the right place to ask it, I decided to give it a go. One of the technicians in my company was preparing some serial cables ...
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1answer
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What does COM Stand for in terms of Serial Ports

In terms of Serial Ports what does COM actually stand for. I can't find any reference to it. (To be clear I am not talking about Component Object Model but the Hardware Interface used in Windows ...
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Is there a free way to monitor a serial port on Windows 7 x64? [closed]

The title questions pretty much says it all. I've looked around quite a bit, but I have yet to find a free way to monitor a serial port (without opening or blocking it from other applications), that ...
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369 views

Emulating a Serial Device on OS X

I have been working with building Microcontroller (mostly Arduino) based devices for the past few months and have been quite surprised by the seeming lack of any form of serial emulation. I know ...
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1answer
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How to connect to Linux USB serial gadget using Mac OS X?

I have an embedded device, on which I use the USB gadget USB interface to either make it available as a mass storage device, or enable access over USB serial using the g_serial module. While I can ...
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149 views

Serial redirection for a desktop computer

Lets suppose I have a desktop computer. Is there any way (i.e. a PCI card or some kind of software/hardware) through which I can enable the computer to support serial redirection? By serial ...
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Seeking 9-bit serial port card for Windows PC [closed]

I need to connect to serial port on a system bus which uses 9 data bits. Is there an off the shelf card which will handle that? Obviously it would need to come with driver software to return 9 ...
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1answer
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LPT port using USB

I have a machine which connects to PC with LPT port. And in the program I am selecting port number on which is LPT port connected, something like etc. ( a326 ). Now I have bought LPT to USB ...
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How do I clean up COM ports in use?

How do I clean-up these in-use COM ports? The COM port numbers always seem to be taken up by something and although right now I only have 4 serial ports (3 over Bluetooth and one USB to RS-232), I ...
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Setting up a Digital VT100 as a terminal to OS X Lion

I have followed this guide: http://www.club.cc.cmu.edu/~mdille3/doc/mac_osx_serial_console.html And I installed the closed-source Prolific driver (the open source one and the FTDI ones always gave ...
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3answers
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is there a way how to remotely control computer via USB

I am looking for a way to control my other computer (win/linux) remotely (ideally via VNC) via USB or serial - without using network or virtual network. It can be fully software based, hardware based ...
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How do I link two serial ports in GNU/Linux?

I need to have one serial port receive data and another to transmit same data. How do I make such setup in GNU/Linux. One will be a port created by bluetooth and another will be a USB to serial ...