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 do I configure Putty to show non-printing Ascii Characters when using a Serial Connection

I am trying to debug communication with a hardware device via serial port. The hardware device will occasionally send out information that is not a alphanumeric or whitespace character. While my ...
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11 views

Serial Connection Issues

I have a Radionics rfid badge reader on my desk which is supposed to interface with our badge software (Stanley PAC) which is installed on my computer. I am using a docking station (also HP) which ...
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1answer
31 views

Simulate a serial port that actually is an internet port [closed]

In CentOS, how do I make a fake USB serial port that is actually an internet port (like port 80 for http)? Edit: I'm sorry that I didn't make it clear. I'm trying to make a server-side compiler and ...
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46 views

how to open the options window for extraPutty session manager

I'm using ExtraPutty and have also installed 'Putty session manager' the session manager's options window: It appeared once when I first installed the session manager but I only get access to the ...
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6 views

Sharing a Serial port between two process with two different configuration in linux

Is it possible to access a serial port with two process at the same time. one for reading serial data and another for writing serial data.For Reading serial data the process should be configured with ...
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28 views

Not able to receive signal from bluetooth module on PC, works on mobile

I am using an IR receiver with a baud rate 9600, which sends signal to a bluetooth module. I am able to see the data which is sent, on a mobile device with a simple BT terminal application. However, ...
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1answer
64 views

wvdial can't retrieve modem response, terminal programs communicate without problems

I'm trying to make a GPRS connection with a SIM800L and a PL2303 USB-Serial cable. If I screen or minicom the modem (at 115200 8N1) I get an immediate response from the modem and I even after setting ...
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1answer
105 views

Portmon - Portmsys.sys not found

I've been wrestling with SysInternals PortMon utility - trying to get it working under Windows 8.1 64-bit. Initially it would not start - it gave "Error 2" and exited, as detailed in this S/O ...
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1answer
32 views

How to transfer data between RS-422 and RS-485 ports?

I'm relatively new to behaviors of serial ports such as RS-232, RS-422, and RS-485. I'm wondering how do you initiate data transmission between a system and a device connected to each other by one ...
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34 views

xmodem communication over serial port via Tera Term is failing

I'm updating the firmware of transmitters over a serial port using Tera Term. For whatever reason, the upload, via xmodem, keeps failing (or timing out or something along those lines) and I'm trying ...
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46 views

Creating a console adapter for an ACME packet server

I am having a hard time with this problem and hoping that someone can help me out. I have an ACME packet 4250 server that needs a console cable to access it. The box itself takes an RJ-45 in the ...
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4answers
114 views

What are com ports and why does a PC need them?

As per the title, I'd like to know the purpose of the com ports, since computers have physical USB ports as well. I've searched the web but without any convincing answer.
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1answer
57 views

How to share via TCP serial port CAT

I want to connect my amateur radio transceiver to a linux (Ubuntu) computer with USB cable (serial port (in windows should be COM3 or COM4) like /dev/??? ) and share it locally with TCP, Is it ...
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1answer
53 views

Get minicom to behave like PuTTY

I'm bootstrapping some servers over serial. I've been using PuTTY on Windows, but I'd really rather use Linux. In PuTTY, I can simply select serial and enter the baud rate. A serial window pops up ...
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2answers
39 views

Where to set advanced settings for serial port on linux

I use a special USB to serial adapter to get data from legacy hardware. Under Windows i have to set some advanced settings in order to start sending data in a way the devices can "understand" and ...
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1answer
57 views

Can I use an UART (serial port) as a MIDI device in Linux?

Can I convince Linux (kernel/ALSA/Jack) to use an arbitrary UART or serial port (usually /dev/ttyS* or /dev/ttyUSB* or /dev/ttyACM*) to output the MIDI messages? This is the way MIDI was done on the ...
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0answers
48 views

Setting up a virtual Com Port?

What I need to get to work together: A USB barcode scanner A Windows (7) Machine A piece of software that listens for data over a COM port So I believe I need a way to make USB device appear to be ...
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94 views

Does socat connects two rs232/COM1/serial ports with null modem cable

I have box A under which two virtual machines B and C are running. Each one of this virtual machines exposes it's COM1/rs232/serial port to machine A as TCP port. The virtual machines are Xen HVM ...
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2answers
94 views

Why I have /dev/ttyS* on Linux when my laptop have no serial/RS232/COM1 port?

I am running Debian Wheezy and my laptop does not have serial port. Why do I have /dev/ttyS*, and what will happen when I try to read/write to them? My config: └──> ll /dev/ttyS* crw-rw---T 1 ...
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74 views

Serial connection to Cisco C40 not taking input

I have a cisco c40 video codec that is not accepting the admin credentials that I established for it over SSH/HTTPS. I suspect that the config file is corrupt as there are other erroneous behaviors in ...
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1answer
84 views

How can I test my serial port in Windows 7?

I installed Windows 7 in my system. I want to test my external serial port. But I can't find Hyper Terminal to test the serial port myself. Is there any alternate method to test it?
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108 views

Receive a file using runscript (minicom scripting language)?

With runscript one can script minicom serial line sessions. I try to script the reception of a file transferred with ymodem. Minicom uses external programs for file transmission. I tried runscript's ...
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20 views

Xubuntu: rs232 dropping data

I got a problem that googling did not solve. We have a computer that we use to "forward" rs232 connections. We had Windows 7 running on it and used the Windows Remote Desktop to forward a Putty ...
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1answer
76 views

“cannot open port!” in a DLL project [closed]

I made a C Console Application in Visual Studio in order to access one of the COM ports with the following code and all went well. #include <windows.h> #include <stdio.h> #include ...
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55 views

Make serial gnu-screen send a line at once

Is it possible to send lines at once in linux screen utility, if used as serial terminal, like for example screen /dev/ttyACM0 9600? By default, every character typed is sent immediately, but my ...
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88 views

Serial port on Virtualized Centos 7

I've just installed a Centos 7 on a VMware box. I would like use a passthrough to the physical serial port to connect our ups, but the serial is not recognized... I also tried installing a vMA ...
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1answer
271 views

RS232 serial Y splitter to Raspberry Pi (USB) and thermal printer sometimes blocks flow to printer

We are sniffing data from a restaurant point of sale system (RJ45 to DB9) to its thermal printer by using an RS232 splitter and a Raspberry Pi (DB9 to USB on the Pi). This has worked great 99% of the ...
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96 views

How to get the IMEI of an usb dongle? [closed]

I'm wondering if there is any open/universal method to get the IMEI of a 3g usb dongle programmatically.
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1answer
134 views

Why would I be unable to type input when using a using serial console in Linux? [closed]

I have a Slackware machine with an RJ45 serial port and I'd like to have a serial console on it. So I have connected it up to another machine running Hyperterminal. I can only get output on the ...
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1answer
224 views

Unable to communicate with peripheral over Serial USB from Linux

I am struggling with establishing comunications with a peripheral over USB serial on my Linux here (fedora 20/64bit), and I am probably missing some step: I connect the device, a /dev/ttyUSBx port ...
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0answers
117 views

socat and serial ports (Linux)

I'm having some issues with using socat against a serial port (on the other end is an FTDI chip) the command I'm using is socat -x ...
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1answer
202 views

Change COM Port Number programmatically

In Device Manager, I can right click on a serial device, navigate to the Port Settings tab, click Advanced, and change the COM Port Number via a drop-down menu. I need to automate this step across a ...
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2answers
595 views

Can't access SerialPort on virtual machine

I'm using VMware Workstation 10.0.4 with a Windows 8.1 64bit as OS on the virtual machine (and the host system). Now I am facing the problem that though the serial port is mapped into the virtual ...
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2answers
548 views

How can I wire RS232 to RS485? [closed]

I've got a wiring diagram but the notes on the side are confusing me. Can someone explain how this pin out should look?
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2answers
277 views

Echo/Pipe command output to Serial line

I have a serial device running on 115200 baud at /dev/ttyUSB0. I need to Pipe the output of a command to it. I Need somthing like: command-that-gives-stdout | command-that-puts-stdin-to-serial --baud ...
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135 views

Mac OS X USB to Serial doesn't work

I'm developing a hardware which has USB to Serial (RS232) connectivity. Everything is fine when connecting the USB to Serial from Windows. But whenever I'm at Mac OS, the cable doesn't work. It does ...
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2answers
207 views

How to view serial com ports but not through device manager

How would i go about viewing a list of COM ports in use without the use of device manager? I don't want to install any software either. Is there a possible way to do this through the command line?
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30 views

serial port settings for scale model 240878

Has anyone ever have configured the serial port settings for a globalindustrial scale model 240878? I have tried some many configuration already using BC-Wedge but can't get the right value from the ...
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2answers
68 views

Mapping a virtual serial port to a remote serial port

I'm trying to start a multiplayer match on an old game (runs on Dosbox), which uses serial communication. So what I need to do is define virtual comports on both computers running the game, and ...
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1answer
984 views

How to send AT commands to HuaweiE3276 using Putty

i am trying to connect with COM port of Huawei LTE modem E3276 with a java program. To test AT commands i am using Putty as terminal application. Once i give COM port and all other parameters (Baud ...
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0answers
55 views

Serial TTA0: connection to Virtual machine | Weird characters and no input

I have setup a serial TTA0: connection to an OpenVMS Emulator running in virtual windows. The console serial port is configured as follows: TTA0.type="socket" TTA0.port=":20000" ...
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7 views

Number of terminal rows in Kermit after closing editor

I am connected to an embedded computer target through its RS232, I am using kermit in a terminal. When I use ls, less, and other command line programs, the whole vertical size of my terminal is used. ...
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77 views

How to install Windows 95 from CD-ROM on laptop with no CD drive

I have a old Toshiba T4700CT laptop which I'd like to install Windows 95 on. However I own't Windows 95 on CD-ROM and this laptop only has floppy. I'd prefer not to have to hunt down and pay for a ...
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1answer
94 views

If I plug a two serial devices into usb adapters both into a single USB hub will my computer see two different COM ports?

Hopefully a simple question but I couldn't quite find the answer myself. I'm writing a program in C++ that will, among other things, need to control two devices that are run by serial port. This ...
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1answer
587 views

How to read infrared signals from a IrDA FIR port on Windows 7 (Acer Travelmate 8200)?

I have an Acer Travelmate 8200 notebook with Windows 7. The notebook has a built-in IrDA Fast Infrared Port (on the front panel) which is activated in the BIOS. Windows did auto-detect the IrDA port ...
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2answers
2k views

How can I set the parity bits when using screen to access a serial port

I typically use screen(1) to open a serial port with the command: sudo screen /dev/ttyUSB2 115200 I've tried setting parenb (and a number of other things) using the following command: sudo screen ...
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1answer
1k views

Unable to find PORT name in ubuntu 12.04

I am writing a code for serial programming in ubuntu 12.04. I have connected a usb to serial converter with my usb port. Now I want to know On which port I have connected my usb ( for example COM12 ...
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1answer
85 views

serial port over tcp without terminal server

Using pandboard, i would like to forward the ttyO2 port where first login comes up and gives a bash. Without using a terminal server (intermediate PC or serial-server) as pandaboard support eth0 how ...
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1answer
83 views

Is there a way to identify the device data is being received from? (python)

Summary I have an MT4000 device connected to my computer using the serial port ttyS0. This is broadcasting data which is being received and read by a udp listener written in Python. I am also sending ...
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46 views

Timeout in COM communication

I have a device that connect to computer and communicate with the computer via a COM port. I tested it with 2 different computer. It works properly in Windows-Server 2008, but return timeout in ...