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.

learn more… | top users | synonyms

1
vote
1answer
113 views

Can COM ports be used as RS232 serial ports?

Appologies if I am misusing/abusing specifications. Question: Is it possible to send serial signals via the PC's COM port? Is it further possible to split this port somehow and send signals to two ...
0
votes
1answer
1k 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 ...
0
votes
2answers
186 views

Piping from serial port on Mac OS X

I have a USB to RS232 adapter with which I'm connecting my MacBook Pro (OS X 10.9) to an EVK1100 board from Atmel. The program on the board outputs a lot of information on the serial port and I'd like ...
0
votes
1answer
283 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 ...
0
votes
2answers
2k views

Ubuntu: Write to serial port: permission denied

I've connected a USB to Serial bridge dongle, and running dmesg | grep tty outputted the following: [ 0.000000] console [tty0] enabled [603199.380677] usb 2-2: cp210x converter now attached to ...
1
vote
2answers
661 views

Serial PCIE not detected?

I have a "Moschip PCIe 9922 Multi-I/O Controller" 2x serial PCI-E card that I'm trying to get working on Ubuntu 13.04. lspci shows the controllers fine, but "dmesg | grep tty" isn't showing them. $ ...
0
votes
0answers
142 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 ...
0
votes
1answer
25 views

how to skip Hyperterminal splash page (spinning globe)

Is there a secret trick to skipping the 5 second animated splash screen when Hilgraeve HYPERTERMINAL starts? When I open HyperTerminal (HyperTrm.exe), I want it to open immediately, and not show me ...
1
vote
1answer
343 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 ...
1
vote
3answers
53 views

Serial Terminal with custom colors

Looked around but I can't seem to find a serial terminal program that has ability to custom color lines according to certain symbols found in received lines. For example I would like to see 'ERROR: ...
0
votes
0answers
58 views

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. ...
1
vote
1answer
398 views

Usb to Serial RS232 adapter with full handshake/flowcontrol support

I need a usb to serial RS232 DB9 adapter to connect a printer. I bought an adapter with a very common-used Prolific PL2303XHD chip, but I have many many troubles with flowcontrol. I tried to switch to ...
0
votes
0answers
179 views

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 > ...
1
vote
1answer
2k views

Bluescreen when Putty reads from serial port

I already got two bluescreens this morning when running Putty (Version 0.63.0.0, which is the newest version as far as I can tell). I have a microcontroller that sends data to a serial->usb converter. ...
0
votes
3answers
95 views

How to create a simple computer interface that senses toggling of a switch?

I want to build a simple computer interfacing system. The use case is: A user will press a switch that is connected to a computer through a serial port (or any other means, I don't care) and a running ...
1
vote
0answers
385 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, ...
1
vote
0answers
929 views

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 ...
0
votes
1answer
592 views

How to disable logging to serial terminal - embedded linux

I have an embedded device running embedded linux and I connect to it using a serial port. I am capturing the logs I need using cat proc/kmsg into a file in a background process. I would like to not ...
1
vote
2answers
108 views

Full buffer serial printer

I have a Zebra GK420 printer connected with a serial cable. It works for few labels jobs but if I send many many labels I get a "Full buffer error". I tought it can be the host handshake than I ...
0
votes
1answer
253 views

TCP > COM1 for receiving messages and displaying on POS display pole

I currently have a Java Applet running on my web page that communicates to a display pole via COM1. However since the Java update I can no longer run self-signed Java Applets and I figure it would ...
3
votes
1answer
267 views

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 ...
1
vote
1answer
221 views

Connect a VFD display RS232 serial port

I need to connect a VSF display to a computer. The VSF datasheet has this pin out specifications (http://www.noritake-itron.com/Specs/CUK/CU2x20029SCPB-KV91B-04.pdf) DIN-Receive EIN-Host Busy ...
1
vote
0answers
433 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 ...
1
vote
1answer
260 views

What does the “Bits per second” option in COM5 Properties tab indicate?

This is related to my Internet's modem. By default Bits per second were set to 7200. I changed it to 128000. Would it affect or increase my internet speed in any way? What do the Bits per second ...
0
votes
1answer
1k views

Connect 2 Win 7 PCs via RS-232 DB9 serial cable

Is it possible to connect 2 windows 7 PCs directly(Direct cable connection) via RS-232 DB9 serial cable? I tried looping data back to the same PC by shorting pins 2 and 3 with a jumper and used ...
1
vote
1answer
5k views

Serial port sniffer / monitor / logger software for Windows 7, 64-bit?

Question edited. Need to understand the serial communication protocol between a USB device and PC, that uses serial over USB communication. I was planning on using a software based approach for ...
0
votes
1answer
1k 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 ...
0
votes
1answer
76 views

udev rules with a math expression

I have a udev rule that creates a symlink for serial devices (USB serial ports) using an expression like this: SYMLINK+="MyDevice_%n". The %n assigns the system device node number starting with 0. Is ...
1
vote
0answers
187 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 ...
3
votes
1answer
3k views

Redirect serial com to tcp port

I would like to know if exists some utility that connects to serial port and redirect input and output to a tcp port. I need this for a Java application, I need to write and read to a serial port but ...
0
votes
1answer
425 views

Connect COM1 port with socat

Is it possible to connect socat to the COM1 device? I am trying to use example from socat man page socat -,raw,echo=0,escape=0x0f /dev/ttyS0,raw,echo=0,crnl and replace device name /dev/ttyS0 with ...
1
vote
2answers
95 views

How to view properties of an open serial connection?

How can I view which properties an open serial connection has? So the baud, start and stop bits, the parity, the number of data bits and especially how the to be transmitted string is terminated (line ...
0
votes
1answer
337 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 ...
0
votes
0answers
87 views

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, ...
3
votes
0answers
178 views

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 ...
1
vote
2answers
6k views

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 ...
0
votes
1answer
198 views

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 ...
-1
votes
1answer
39 views

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 ...
1
vote
0answers
442 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 ...
0
votes
1answer
176 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 ...
4
votes
2answers
9k views

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 ...
0
votes
1answer
586 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 ...
3
votes
2answers
365 views

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 ...
1
vote
1answer
639 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. ...
1
vote
2answers
2k 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, ...
0
votes
7answers
40k views

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 ...
0
votes
1answer
113 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 ...
0
votes
1answer
1k 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, ...
1
vote
0answers
68 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 ...
1
vote
3answers
1k 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 ...