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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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
32 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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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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12 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
32 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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22 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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48 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
206 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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34 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
61 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
152 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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89 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
110 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
232 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
191 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
199 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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110 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
102 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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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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2answers
49 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
618 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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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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6 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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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
59 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
379 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
1k 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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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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71 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
57 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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33 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 ...
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238 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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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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97 views

Triggering a server to shutdown in receiving a signal via serial port (RS232)

I'm a fresh graduate (Electronics & Commn) and want to start my career in linux administration. I'm using a Ubunutu 14.04 server machine for R&D (with ups). Now my scenario is whenever main ...
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1answer
57 views

Prevent PuTTY from minimizing

I am using PuTTY to monitor a serial port spewing both binary data and ascii data at 1000000 baud. The binary characters are raw uint32_t bytes from sensor values and are essentially random. When ...
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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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90 views

Redirect TCP/IP to COM port driver

There are many programs which emulate a COM port and let you redirect it to an ethernet port. I want to do the opposite of that. Create a virtual ethernet port that redirects to a physical COM port. ...
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How can USB 3G modems reach high speeds through a virtual serial port?

I'm a bit puzzled about the virtual COM ports used by modern high speeds USB devices that creates several serial interfaces, one of which is used for data transfer. A modern 3G/4G USB modem can reach ...
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133 views

How to send a BREAK on a serial port from command line in Raspbian Linux?

I am looking for a way to send a serial BREAK from a shell script in the Debian Linux that comes default on a Raspberry PI without needing any additional software to be downloaded or compiled. ...
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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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1answer
84 views

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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1answer
780 views

Impersonate a serial device with socat

I am trying to use socat to impersonate an external serial device. If I do this in one terminal: sudo socat -ddd -ddd PTY,raw,link=/dev/ttyS32,echo=0 READLINE and run this simplified version of my ...
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213 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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1answer
4k views

How to transmit single Hex value serial data in Putty using alt code?

I am trying to sent a specific hex value across a serial COM port using Putty. Specifically, I want to send the hex codes 9C, B6, FC, and 8B. I have looked up the alt codes for these and they are ...
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181 views

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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78 views

FT232 USB-Serial not usable with deamon

I am trying to use an USB-Serial converter with a program (a deamon) that is launched at startup on a embedded board (Odroid-XU). The deamon does not work since it fails to open the serial 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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150 views

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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452 views

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 ...