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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Redirecting serial port keeping ability to send signals

I have the following scenario: a laptop running Windows XP, connected to a meter through its serial port. I need to read/write to this serial port from a remote computer (running windows 7). I also ...
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Saving a binary file with HyperTerminal

I have an embedded platform that is connected to my Windows PC via the serial connection. The embedded application sends 532 bytes through the connection. Using HyperTerminal, I am able to see the ...
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File transfer over a serial line

I have 2 linux computers, and a serial line between them, one of them is only accessible through a serial line that has shell on it. How can I transfer files between the 2 computers? I've heard that ...
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connecting device without null modem cable

I have a data collector device which has a RS-232 male port, and the PC which sends data to that device has also a COM (RS-232) male port. For wiring I have a RS-232 cable (male to female) and a ...
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NetBSD Networking

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 (probably almost dead). ...
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Use serial port (COM) as LPT1

I have a device that needs to be plugged in to LPT1 to run a legacy software. I am trying to find a workaround to get it running in a latptop (without parallel port, obviously). I have HL-340 ...
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279 views

Serial GPS as time source on Windows 7?

How do I use GPS device connected over serial port as a time source in Windows 7? I have a GPS receiver on my mobile phone which sends data using Bluetooth serial link in NMEA format to computer.
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Creating virtual serial port in Fedora

I want to create a virtual serial port in Fedora. I'm using Java code to communicate over a serial port. I want to test this code with out any serial devices connected.
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Prolific USB-to-Serial Comm Port significantly slower under Windows 7 comparing to Windows XP

I am using a Prolific USB-to-Serial adapter based on the Prolific chip to use with a device on serial port. I have the latest version of the driver installed: 1.3.0 (2010-7-15). When I use my device ...
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Help accessing Beagle over serial with Minicom/GTKTerm

I am trying to access a brand new Beagle Board from Ubuntu or Mac over serial using the setup seen here: http://specialcomp.com/beagleboard/RevC1.htm I got Minicom and GTKTerm installed on the Ubuntu ...
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How to switch between Linux virtual terminals over serial?

How do you switch between Linux virtual terminals over a serial terminal connection? I'm trying to install Debian on a Beagleboard via the serial console. I'm using screen (screen /dev/ttyUSB0 ...
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How does RealTerm send Numbers

How does RealTerm send numbers? For some reason, when I enter a number under the "Send" tab to be sent over the serial line in RealTerm, it works, but inputting the same commands in PuTTY through the ...
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PuTTY Serial Baud Rate Change

Is it possible to change the baud rate once the terminal has already been opened in PuTTY? If so, how would I do this?
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I'm looking for serial port monitoring software

I need a serial port monitoring software that works on windows 7 64bit or GNU/Linux and supports at least RS-232. Bonus points are if it's free software or at least freeware. I just need to be able to ...
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1answer
442 views

OS X: log text from serial port

I have a text stream coming in on a USB-RS232 adapter. I want to pipe it to some Unix tools, to a file, whatever. What is the simplest way to do so? Does it really require third-party software? OS X ...
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New serial window in GNU Screen

I know that I can launch Screen as a serial port terminal from scratch. What I want to do is to create a new window inside an already running screen session as a serial terminal. so that I don't need ...
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How can I login (send text) with minicom?

I am attempting to login from a Linux client to a set top box running Linux via a USB to serial cable. When I power on the device, I can see the init messages scroll past, and I get to the login ...
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473 views

Turning on computer using communication port

I am working on something that would require a computer to be turned on "remotely" but still within reach in the same building. I did some reading about WOL (Wake On LAN) and would like to know if ...
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VirtualBox: 4 serial ports

Is there any way in virtual box to have more than 2 serial ports? When I try to set a 3rd or 4th serial port I get "Argument slot is invalid. RT_ELEMENTS(mSerialPorts))". The documentation claims it ...
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599 views

Use Serial Port as Digital Out

Goal: Output a single bit from a program on my PC to a TTL circuit. I know I can buy a digital I/O card, but I just want a single value. Can I use one of the pins on the serial port as a single TTL ...
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USB to RS-232 Converter Power Option

I have an device that is interfaced with RS-232 that requires power on Pin 6 at 5V and Pin 5 as ground to power the device. Is it possible to do this with an USB to RS-232 Converter? If not, what ...
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Looking for Fast RS-232 or RS-485 Interface Cards for Windows

I have a module that is usually bundled with a master module, which we now want to use unbundled. The module uses an RS-485 interface. The problem is, by default, the module runs at 1.25 Megabaud, ...
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“mount” a serial port or USB or PS/2 or parallel port on a local machine over TCP/IP

let's assume I have two boxes, both running some (any) unix variant. I have root privileges on both boxes and they are networked together. I'm using A, the other is B. I'd like to "mount" the ports ...
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How can I send data to the serial port from a Linux shell?

I need to find the linux way of running the following DOS commands: MODE COM1: 9600,N,8,1,P COPY FIRMWARE.COD COM1 Is this possible? I know COM1 in Linux is /dev/ttyS0 but that's about it. How do ...
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Is there a limit to the number of USB to RS-232 ports my computer can support?

I am looking to get a whole bunch of digital output pins that I can directly control from my CPU and I am hoping to use a whole bunch of USB to serial ports to achieve this. Assuming I am using a ...
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Why are some PCs losing data coming on over USB serial?

I have an embedded device that connects to a PC using USB and enumerates as a USB serial port. The device spits out approximately 30 megabytes of data over a period of about 15 minutes. My PC is ...
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XP to XP link with SLIP over serial - No IP address on host computer side?

I'm trying to set up a SLIP link using a serial connection between two XP computers. This is to test some specialized communications hardware that only supports IP via SLIP. As a starting point, I'm ...
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Serial port access errors in WINE

I have a setup in which I use a USB serial adapter + some application which sends and receives data using that serial usb. But this setup which works on a Windows, or even in a VMWare Virtual windows, ...
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Dell Optiplex 755 - serial port driver for windows 7 64bit

I have a dell optiplex 755 (tower), it was shipped originally with vista but was recently reinstalled using Windows 7, 64 bit. THe serial port driver, and something else called "PCI Simple ...
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Serial port RS-232 and Security

If I have a device connected to serial port RS-232 on my computer and an application that is communicating with it. How secure is this? Can another application communicate with the device at the same ...
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How to use IrDA adapter as serial port?

I remember back in windows 98 era that you could install IrDA adapter and associate serial port with it so it would work just like rs-232 to infra-red adapter. Is such thing possible on windows 7? Is ...
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Display Hex in PuTTY for Serial

Does anyone know if there is a way to get PuTTY to show the hex values of what it's receiving over a serial connection instead of characters?
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Multi serial devices on one port

I am developing one software for managing parking lot. System is designed to use four HID RFID devices for authorization clients on gates. Each device should be connected to server by Serial port ...
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Is there another way to connect to a LinkSys SRW2024 switch from CentOS?

I am configuring a Linksys SRW2024 and accidently changed the management VLAN before changing the VLAN configuration. Thus, I can no longer access it. The only way I have read to get into it now is ...
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How to send from my Z88 to my PC

I've got a Cambridge Z88 that I want to get working with my PC. Around 6 years ago - in 2004 - I made heavy use of my Z88 to do a whole bunch of writing on the train while commuting to and from work. ...
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8051 MCU debug board function

In school I have written many programs for an 8051 compatible CPU. But I never actually knew how our "debug" sets worked. I mean, we test our programs in special sets, which actually allow you to very ...
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How do I know which /dev/ttyS* is my serial port?

I have a laptop which has only one serial port. I went into: /dev directory, and I found: ttyS0 ttyS1 ttyS2 ttyS3 How do I know which of those "ttyS" refers to my serial port?
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Connecting to a switch?

I have a managed switch that I liberated from our school's surplus goods store for $10 that has a serial based console. I have a serial cable and a computer with a serial port, but I have no idea what ...
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How can I pipe the output of the serial port to a file in Windows?

How can I pipe the output of the serial port to a file in Windows? In Linux the command would be: cat /dev/ttyS0 > /opt/logs/Serial.log
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What would multiple serial ports be used for?

I saw someone was using something like the card in the link below on there system for some networking gear on their pc. I am very curious what a person would need 8 serial ports for. What kind of ...
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How can I setup a pair of virtual serial ports in windows XP?

I would like to create a pair of virtual serial ports that have a virtual null modem cable between them.
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How can I login to Ubuntu using a USB serial port?

How can enable remote terminal login into Ubuntu 9.10 using a USB serial port? I created device /dev/ttyUSB0 and i want to allow logins using Hyper-Terminal. I found some resources but they are ...
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Serial port game controller (racing pedals)

I have an old madCatz racing wheel for the playstation 2. The gas and brake pedals are connected to the wheel by a serial port. I just bought a usb racing wheel for the PC but it lacks pedals so I ...
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Determining Serial Driver Supported Baud Rates

How can I determine the baud rates supported by my serial driver? My driver details (from the Device Manager) follow, but they do not seem very helpful. I am writing an application that is crashing ...
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Is it possible to reset FTDI virtual com ports enumeration, we easily get hundreds of COM ports in production environment

I have also asked this on serverfault but perhaps it is better suited to be asked here? I hope I'm not breaking any etiquette. When producing devices that use a FTDI USB to serial chip to ...
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Serial Over IP, windows-linux

I need to have a serial port "shared" over the internet (may or may not be using a vpn) At one end is a windows box, at the other is a linux box, wich has the serial port the linux box has no gui and ...
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Add serial port to VirtualBox VM?

I am using Fedora 12 and VirtualBox 3.1.2. My guest OS is Windows XP. How to add a serial port which will be 'physically' connected to /dev/ttyUSB0?
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Valid 16550 UART settings

Is it valid by the protocol of a FFUART 16550 to configure one side (Machine A) to 155200 baud rate and the other side (Machine B) to 1200? Should I expect the connection to work flawlessly in the ...
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RS232 Packet Sniffer

I'm working on a software development project that requires me to send signals to a device via RS232 port. Sadly the included utilities for transferring to and from the device would not work for mass ...
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Why do I lose data from serial port when I reboot my computer?

I have an application that is monitoring a serial port. Data is sent from the other side only when the port is opened but I found out that I lose some data when I reboot my computer. Why is that? The ...