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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236 views

Sending Linux commands over serial connection to an Android device

I have a question about being able to send Linux commands over a serial connection to an Android device. I have heard of PuTTY and tried to use it, but I am ultimately lost with it. I was in the ...
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343 views

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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Output to Serial Port

I am trying to output to an arduino through the serial port in windows using a program called boblight. Basically, I have to tell it where to output. I have tried "COM3", "dev/com3", and "dev/ttyS3". ...
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242 views

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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144 views

How to send characters to a virtual serial port in Windows 8.1

Microsoft is very unhelpful, as per this link. However one method is the command: echo abcdefghijklmnopqrstuvwxyz > COM3 And as per a question here here, another option is: SerialSend ...
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456 views

Converting the /dev/ttyUSB to com ports in linux

I have some software which runs on windows. I installed wine and ran it in linux. It works fine but the issue is it communicates with a serial port. Therefore the only option I can choose are ...
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221 views

Delete virtual serial ports in Windows XP

In my registry file HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM there are 14 ports that I want to delete – \Device\VCom11 to \Device\VCom24. I deleted the ports with Registry Editor but after ...
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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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138 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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394 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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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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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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110 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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254 views

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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489 views

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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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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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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284 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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117 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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364 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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208 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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591 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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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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30 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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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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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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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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412 views

How to send message to virtual serial port created with socat?

I am using socat to create a virtual serial port on linux socat -d -d PTY,raw,echo=0,link=/dev/ttyVA00 PTY,raw,echo=0,link=/dev/ttyVB00 which prints socat[31640] N PTY is /dev/pts/2 socat[31640] N ...
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serial port communication with epson tm-t88iv ubuntu

I am trying to establish low level communication with an Epson tm-t88iv thermal printer via shell but I can't figure it out. I'm working on ubuntu 13.10 64 bit with a Dell vostro 1510. I have it ...
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PL2303 board with USB to UART bridge doesn't show in Device Manager, why not?

The board works b/c if I plug in a mouse and use it the built-in way then it works fine. However, if I attach a USB male on each end from the board to the pc it doesn't recognize that the hardware is ...
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49 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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pipe a serial port to a command that blocks? </dev/ttyACM0 nc -l 1234

For practical purposes I have only one shot at testing this, so I wonder how will </dev/ttyACM0 nc -k -l 1234 work when no client is connected. Will the kernel buffer all the serial data, will the ...
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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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196 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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Linux - Share Serial Port over Bluetooth?

I've got Debian (actually, Raspbian on a Raspberry Pi), and I'd like to share a serial port (/dev/soundmodem0) via bluetooth. To be clear: The serial port is on the Raspberry Pi, and I'd like to have ...
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How to use USB as a COM port and USB on windows 8 (or 7) for FPGA work

I am using this FPGA: http://www.microsemi.com/products/fpga-soc/design-resources/dev-kits/igloo/igloo-plus-starter-kit I want to use it for serial communications across UART. The problem is the usb ...
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How to forward bluetooth gps from Linux host to VirtualBox guest?

I've installed the Holux M-241 Bluetooth device on Ubuntu host. I am the stage, when I can read the raw data from the device on host using sudo cat /dev/rfcomm4. Now, I connected the device to ...
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Is it possible to accurately time the reception of serial characters?

I want to accurately (like - microseconds or better) determine the arrival time of serial characters under Windows (XP). I can measure time accurately using the CPU hardware counter easy enough, ...
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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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332 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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351 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 ...