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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Installation VT220 terminal in Ubuntu

I want to know how to connect a Digital VT220 terminal to PC-Linux with Ubuntu 12.04 using a serial-USB device. At the moment I did next steps: sudo vi ttyS1.conf (at /etc/init) # ttyS1 - getty ...
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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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Wrong newline character over serial port (CR instead of LF)

I'm trying to talk to a device using a usb-to-serial converter on linux. Drivers are working, the device exists at /dev/ttyUSB0. There is a strange problem (checked with a null-modem cable to another ...
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Local echo using Screen to connect to a serial terminal

Reading through the book "Building Wireless Sensor Networks" I learned that you can use the Screen utility to attach to a serial console. I tried using it to connect to an XBee module and it seemed ...
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How can I set the power on default state of serial port on Windows 7?

How can I set the DTR line to high by default when a Windows 7 machine starts up? Background: My own Windows service sets the condition of the com port lines to indicate its status. One of these is ...
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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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577 views

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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118 views

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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Linux IrDA printing

I have a USB IrDA that I got working with my IrDA printer (SiPiX compact printer A6) on the Windows side, using default 4000000 speed and 1.0ms turn-around time (in the driver config). The USB IrDA ...
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How to set up a serial port in VirtualBox?

I need to access a serial device in my VirtualBox guest (Windows XP). My host system is ArchLinux 64-bit. I configured the VirtualBox serial port as follows: Port: COM1 IRQ: 4 I/O Port: ...
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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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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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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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108 views

Linux tells me a serial port is in use, but it isn't

On CrunchBang linux (Debian variant), I have a COM port on ttyS0, which I'm trying to use with an NFC device. libnfc responded that it couldn't see any NFC devices, so I tried directly opening the COM ...
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Problems sending data over serial port with PuTTY

I am using version 0.63 on Windows 7 x64 in a corporate domain environment. I have an enduser that is programming a bluetooth module over a serial connection. He is using a USB to Serial and we had ...
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60 views

Avoid USB/Serial adapter port change in Windows enviroment

I would like to know if there is some way to "fix" a serial port to common usb/serial adapters. Many times I saw that changing usb port of adapter it takes a new serial port number. It happends also ...
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404 views

Editing Kernel configuration file

I'm trying to compile uplcom driver for Ubuntu 12.04 for USB support of PL-2303HX serial adaptor using the following link. http://manpages.ubuntu.com/manpages/jaunty/man4/uplcom.4freebsd.html But, ...
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How to fix the COM port name for USB serial port in Windows 7?

I am using USB-to-Serial port adapter in Windows 7 notebook. The model as seen in Control Panel > Hardware and Sound > Devices and Printers is named as Profilic USB-to-Serial Comm Port. When ...
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483 views

Sending number over serial to arduino sending something different?

I have an arduino setup that turns on a light when it receives a 1, and turns off a light when it receives a 0. I don't think there is anything wrong with the code. I can send the Arduino a 1 with ...
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206 views

Generic text printer / print job status

I've a serial text only printer attached to a machine with Win XP and am using Generic text only printer driver to print jobs. The printer prints jobs properly when it's ON. When it is OFF, the ...
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468 views

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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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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271 views

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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Serial port IRQ sharing on Linux

I was never able to use two serial ports for I/O on Linux that shared the same IRQ, although the serial driver has "IRQ sharing" enabled. Some BIOS simply don't have enough IRQs to give to each port, ...
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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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618 views

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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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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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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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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51 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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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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112 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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29 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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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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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 ...
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240 views

Configure UART GPS module for Friendlyarm nanopc-t1 on Android

I have a NanoPC-t1 device and I'm running Android 4.2.2 on it. I want to install my gy-gps6MV2 module and make it work as the device GPS. Do I need root access? (I already tried to root device with ...
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Modbus Communication not Working

https://code.google.com/p/stm32modbus/source/browse/#svn%2Ftrunk%2F%20stm32modbus%20--username%20ickingdom%40gmail.com%253Fstate%253Dclosed I have debug and compile this program successfully but ...
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USB modem on OS X doesn't respond to Python modules

My goal is to communicate with my USB modem on my iMac with Python so I can send commands and read the results and responses. I have a USB modem hooked up to my iMac and I can communicate with it ...
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My USB doesn't detect peripherals until restart

I have a vaio s series laptop,running windows 7. it has 3 usb ports. with flash memory and storage devices I have no problem with them. but with peripherals like mouse and USB2Serial I have problem ...
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217 views

Unable to send/receive from microcontroller virtual serial port

I have a MSP430 Launchpad (microcontroller) which forms a virtual serial port on my Windows 8.1 rig. Somehow I cannot receive/send any data through this serial port on this rig. I have tried 2 other ...
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libftdi disconnects ttyUSB0

After rebooting, my USB device connects fine. $ dmesg -T | grep tty [Sun May 25 10:14:43 2014] console [tty0] enabled [Sun May 25 10:14:43 2014] 00:05: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = ...
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Configure PL2303-based USB-to-RS232 adapter to stay awake when no active device is present

I am resurrecting some X10 devices with the aid of a USB-to-RS232 adapter. The problem is, that the adapter only works with the Firecracker device when there is another serial device on the line (the ...
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USB to Serial driver for windows

When I connect ingenico terminal with USB cable to my windows 7 laptop, there is new COM port in device manager and I can use it. Properties show that serial port uses sagem monetel driver. I do not ...
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162 views

Check which com port my device uses?

I have a device hooked up to the USB connector and within it's software i have to choose which com port it uses. With Windows XP i would go to the device manager and go to com devices/ports where it ...
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Serial Port not able to communicate with device with all versions of windows

I have a piece of hardware that communicates over a serial connection. On a windows 7 machine everything works fine. When I try from a windows XP or Server 2008 R2 I am unable to get any response. ...
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netcat command is not working in bidirectional mode

I am using netcat in Linux to send and receive data (using udp protocol) from a serial port to another device through the network. The command is : nc -u 192.168.10.12 < /dev/ttyUSB0 > ...
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Overheat alert warning on CPU through Serial port

Is there any way to make an external alarm go off if your CPU reaches a certain temperature using your serial port? I over-clocked my processor and I get warnings if it reaches a certain temperature, ...
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485 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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419 views

Accessing serial port via sockets

I'm on windows and I need to access my com5 serial port via sockets. I tried serproxy but it does not work. Is there a better tool to do it? This serial port com5 is a virtual serial port of my 3g ...