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Questions tagged [serial]

Serial stands for doing things sequentially, one bit at a time.

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SoftwareSerial receives wrong characters

I have a problem with my Serial Communication Setup. I have an ESP8266 (from now on ESP) connected to an Arduino UNO (from now on UNO) with Serial. I've connected the serial port of the ESP, to pin 5 ...
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1answer
18 views

Arduino with HM-10 doesn't always receive the complete message that was sent [closed]

I am a beginner trying to communicate between an iPhone and an Arduino Uno. I have an HM-10 BLE module device wired to my Arduino. I use it to send and receive messages from my iPhone. My Arduino runs ...
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0answers
25 views

PCI-e Serial Adapter RS-232/422/485 drivers

Excellent 2019 to each of you ! I bought the PEX4S232485 from StarTech couple of months ago to only have it mounted into a Debian Server (Stretch) today. I confess I jump on that board without ...
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2answers
57 views

How can I use old MIDI devices with modern PCs?

I have a Yamaha PSR-550 keyboard. It was released in 2001 (it's as old as me!), and is equipped with MIDI ports: How can I use the serial MIDI port (marked to host) with my modern PCs? (They don't ...
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0answers
21 views

Serial communication doesn't work RPI--ARDUINO uart [closed]

i want to use serial communication to send data from an arduino nano to a raspberry zero w. I used this method of connecting the pi to the arduino I used this code import serial port = serial....
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0answers
43 views

qemu guest serial output to console of host

I have been searching for a solution for some time now and where I have found several threads that seem to have helped other people, those solutions do not seem to work for me. I would like to start a ...
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4answers
2k views

Using an Rj45 to D9 RS232 Adaptor with a laptop to control an RS232 device

I've got an RJ45 to D9 RS232 Adapter that I want to use to control an RS232 device in the following config: Laptop RJ45 Ethernet port -> Cat6 patch lead -> D9 RS232 adapter -> RS232 Device Would ...
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1answer
96 views

Redirect serial console for ssh/minicom

I am working with an embedded Linux system using a USB serial port as the system console. When I am local to it, I simply use a USB cable to my PC and run PuTTY, giving me an interactive console ...
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2answers
327 views

Executing multiple commands over serial port with PuTTY with a .bat file with a delay between individual commands

send.bat: plink -load test < commands.txt (test is a saved session in putty) commands.txt echo set_zero timeout /t 3 /nobreak >nul 2>&1 pause >nul 2>&1 echo set_a 65535 ...
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1answer
62 views

How do i find out which Windows do i need?

I had to reinstall my laptop, and "luckily" my recovery disk is broken... My laptop is too old to get help from the manufacturer or the seller, BUT i have the Windows serial key at the bottom of the ...
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1answer
739 views

screen a serial get could not find a PTY Error

I insert the serial-USB convertor into my Mac. and under the /dev I find the tty.wchusbserial1410. but when I use screen to connect it: screen /dev/tty.wchusbserial1410 9600 there get error: ...
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1answer
101 views

Forward shell to serial on Linux

I'm trying to forward a shell to serial (USB to RS232) so I can use an old monochrome CRT terminal. How can I forward a shell to a serial port so the other end can send commands & read output ...
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2answers
52 views

Splitting serial port output

I have a nurse call system that has output that connects to a paging transmitter. Works good right now. We put in a serial "Y" splitter so that we could receive the same data, but to another computer ...
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1answer
75 views

Can non IP data formats over cat5 / 6 (eg. RS232 etc..) damage an IP switch?

Can various data formats can be run over a cat5 / 6 cable with RJ45 ends. These can include (not an exhaustive list) HDbaseT RS232 / RS485 (using an RJ45 to serial adaptor on the end) POE Cat6 (...
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1answer
69 views

How does a machine interpret serial data from an external serial bus?

Most external buses (e.g. USB) transfer data in a serial manner. However, a machine like a PC needs to turn this into parallel data to interpret it? How does it do so? Edit: If most computers operate ...
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2answers
250 views

Network between 2 routers - is it LAN or MAN or WAN?

We have two interfaces on two routers, which are connected with a serial cable. Both of the interfaces are in network 224.0.0.0/24. So one interface on the first router has IP address 224.0.0.1/24. ...
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1answer
2k views

Running batch commands through PuTTY serial connection

I have a sequence of commands which I use to update the firmware on my Linux machine. When I connect to the machine using a serial connection I can type the commands one-by-one and they work fine. I ...
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0answers
111 views

Ubuntu Server 16.04 Serial

I have a old server that I would like to install ubuntu server on, unfortunately it only has a serial rj45 on it and no on-board graphics. I have followed this tutorial with no luck: https://github....
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0answers
46 views

Ubuntu Server serial install

I have got a new watchguard XTM 515 and would like to install Ubuntu Server on it as I know that it is powerful enough to run it. The only restraint is getting serial access: how do I install Ubuntu ...
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0answers
20 views

Split bar code data through serial ports.

I have been trying to split the bar code data from a Honeywell bar code scanner into two different computers for different purposes. Bar code output through 9-pin serial port. One input to desktop ...
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0answers
53 views

Connect Windows PC to remote Linux serial port

I have a remote Linux(Ubuntu) server with embedded device connected to the server's serial port. I have a Windows program to manage that embedded device. Is any way to share server's serial port via ...
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1answer
32 views

Emulating an hardware printer

I have an old machinery that does some analysis and print out the results on an Epson LX300, connected via a serial port 25 pin. Is possible to connect this machinery to a computer in order to ...
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0answers
365 views

What is the difference between build id and serial number?

My serial number and build ID are completely different. Since my computer has been doing strange things (even after reset) what should I use to identify my desktop (HP) when I call support? Moreover, ...
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1answer
91 views

USB to Serial Adapter

OS is Windows 7 home edition, with a Prolific USB to Serial adapter. The issue is that after rebooting, Radio BOSS sends the command to the serial port adapter but the device does not recognize the ...
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0answers
104 views

Connecting two computers over serial

I have previously used my Arduinos to program other devices over serial by connecting the Arduino to my computer, grounding RES, and connecting the TX and RX pins on each device. This allows me to ...
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0answers
201 views

Serial port modem

I'm trying to send commands to my serial port, I have a modem on my USB and I can't connect with putty or minicom for send AT commands. dmesg | grep tty [265301.769187] usb 2-1: GSM modem (1-port) ...
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1answer
290 views

Is there a way to run rsync over a USB / serial connection through a terminal program.

I want to keep two directories in sync between my laptop (Ubuntu) and my PocketCHIP (Debian) which connects over USB serial. I use cu to log in to the PocketCHIP, but is there a way to rsync between ...
12
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5answers
4k views

Why are USB ports sometimes referred to as serial ports and called COM?

As far as my understanding of computer ports goes, A serial port is a 9 pin plug such as the one showed here and it is also called a COM port. USB ports are a different standard from serial ports. ...
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0answers
46 views

Connect electric PAT tester via serial port

I have a fairly old portable appliance tester (Seaward Europa Plus), for which the only way to download data to a PC is a SR232 port. I do have a SR232 to USB adapter, correctly installed and ...
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1answer
451 views

Difference between native port drivers and device drivers?

It occurred to me that I don't actually understand the difference between native port drivers (that is, the native serial/parallel/USB/etc. drivers on each OS) vs. external hardware-specific device ...
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0answers
33 views

Relationship of system serial drivers to RS-232

I am trying to strengthen my understanding of serial ports and device drivers. I was told that the serial port standard, RS-232, defines the electrical characteristics and timing of serial port ...
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0answers
463 views

Visual Studio 2008 trial expired, how to insert serial?

How to enter serial to upgrade to professional? Surely I have valid cd key on my case. When I clicked that Upgrade button then just following This MS site It didn't ask cd key when I installing it.
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1answer
444 views

Linux shell via serial console gives garbage output

I connect to a router running OpenWRT via serial port. All shell output is broken as shown here (missing symbols) and here (ls /dev/ output — escape sequences shown and overall mess). The interesting ...
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0answers
345 views

Linux/slattach - ip over serial

I trying to run TCP/IP Over Serial communication, as instructed: https://stackoverflow.com/questions/5890505/socat-tunnel-ip-through-tty I entered a command: root# slattach -s 19200 -p slip /dev/...
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0answers
157 views

Make a phone number ring for some time using a 56KB modem

we have an old modem model US Robotics Sportster Flash and we'd need to use it to open a door in our organization, by making a phone call to an internal number (say, 101). We are running on an Ubuntu ...
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2answers
120 views

Is it possible to send NUL across a serial line?

The ascii character "NUL"'s value is 0. Is it possible to send this character over a serial line without getting it interpreted as no data being sent?
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2answers
48 views

How computer identify if it is a usb or serial AND what port number to use

Why does external devices connector is in USB type A. But when connected to computer it is listed on com port or either on usb? How do computer I identify this? Also, With regards to com port. Why do ...
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1answer
520 views

How to enable and use the serial terminal of a HP Microserver Gen9?

I have a HP ProLiant Microserver Gen9. It has HP ILO version 4, but the Java based Remote Console doesn't work reliably and I can't use it after the POST screen in the free version of ILO (asks me to ...
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1answer
68 views

Talking to a serial device - find out the language

Question: I have an RS232 console connected to a Raspberry Pi 3 via USB. I can see that it in /dev/ttyUSB0 How can I talk to it without knowing what are the right commands? Is there even a way? I ...
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0answers
166 views

PSoC 4 Ubuntu can't access

I'm currently experimenting with a PSoC 4 Prototyping Kit from Cypress. I've programmed the PSoC on my Windows machine and it is usable as expected, but I'm currently trying to access it via USB ...
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3answers
3k views

Display non-printing chars in terminal emulator on windows

On a windows PC I'd like to be able to find an approach to see incoming data on a serial port, as it comes in (i.e. rather than logging to a file and then converting and viewing the file after the ...
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0answers
410 views

Control Amplifier from Computer via RS232

I got a second hand Rotel RSX-1056 amplifier that I would like to control from my computer (because I don't have the remote). The amplifier has a serial port (RS232) and on the web I was able to find ...
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0answers
178 views

Getting more information about the UART

On my desk I've got a BPC 5070. I installed Debian (8.4) on it and it's working fine. I also need to read and write from the serial ports, so I wanted to make a test and installed minicom and started ...
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0answers
187 views

Using Keyboard Over UART In C.H.I.P

I have recently bought a C.H.I.P. and because it only has 1 USB port, I thought it would be nice if a USB Keyboard could be interfaced to C.H.I.P. through its UART port, with a USB - RS232 adapter. ...
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0answers
42 views

Alternatives to the V35 interface

I am trying to find an alternative for the legacy cables I am using. I currently have a Cisco router connected to a DL 600 E (Multiplexer). On the Cisco router there is a serial port. On the ...
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1answer
443 views

Serial Port not found by MATLAB to communicate with Arduino

I'm just trying to know how to established serial communication between Arduino and MATLAB. From this tutorial I copied the code, but as for my PC use "Windows" I had to change my serial port name. ...
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1answer
3k views

Serial over USB 2.0. Is it really faster than standard serial? [closed]

A member of our scientific collaboration designed a data acquisition box with with 4 channels @ 1 kHz that synchronizes time with GPS. He uses USB 2.0 to have the box communicate with a computer, and ...
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1answer
361 views

serial port on vmware has overlapping error

I have a VMware and a card reader with USB as serial port . I want to forward a serial port on my windows( 8.1) to VMware (Ubuntu). But It shows me this error: How can I use my com port on VMware.
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3answers
103 views

broken usb port , adapting serial to usb

Dell Inspiron running Vista sp2 has broken USB port; can I obtain an adapter to use off the 9 pin serial port that will convert to USB? If so, will it be reliable or slow compared to USB 2.0?
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1answer
151 views

Need to displace serial port across machines Linux and Windows

I have an app running on Linux (Ubuntu) that wants hardware attached to a serial port. I want that hardware on a Windows machine (XP SP3) elsewhere on my LAN. So, I need a serial port server on the ...