2022 Developer Survey is open! Take survey.

Questions tagged [serial]

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

Filter by
Sorted by
Tagged with
0 votes
0 answers
31 views

Unable to install driver for serial/parallel port card on Suse Leap 15.2 with Kernel 5.3.18-lp152.84-default

I have an IOCREST SI-PEX50103 which is a PCI-Express Multi I/O Controller Card with 2 serial ports and 1 parallel port. It uses the vendor supplied AX99100 driver. I am running openSUSE Leap 15.2 with ...
user avatar
0 votes
1 answer
53 views

Why some USB Serial converters work and others don't on specific hardware?

I went online and brought a pack of the cheapest USB to Serial adaptor, put TX on RX and RX on TX and was able to communicate between the 2 ports without any issue. So I plug the thing in a device ...
user avatar
0 votes
0 answers
92 views

Wrong characters in serial console

I have a Linksys SRW2048 that I want to configure via the serial port. I hooked it up with an RS232 / USB cable and a gender changer on the RS232 end. If I start a PuTTy session (same Problem in other ...
user avatar
0 votes
0 answers
23 views

Serial mouse recognizes clicks but not movement

I have a serial mouse - CH Products DT225 datasheet here - and a PCIe serial card - the PEX2S953. The driver installation went fine and the computer recognizes them as ports. I set them up with one ...
user avatar
0 votes
1 answer
61 views

create bitmap image from data being sent to a printer

I have a device that sends its screen capture to serial and parallel printers. I received raw data from serial port being sent to printer. I want to connect this port to my PC instead of a printer ...
user avatar
  • 1
0 votes
0 answers
48 views

Serial to HID keyboard device converter

I am working on a project to collect data from a barcode scanner using an arduino which in turn is connected to a POS/laptop. So far i am able to collect the data from the barcode scanner by using the ...
user avatar
0 votes
0 answers
24 views

Exceeding the 256 serial COM PORT limit? [duplicate]

Can I use more than 256 COM PORTS on a single host? From this answer, it looks like it's a software/OS limit only: How many serial ports can be configured in Windows 7? I'm unable to figure out how to ...
user avatar
  • 101
1 vote
0 answers
9 views

TCP server device for USB access readers

I have a BarCode reader that spits out data over a Virtual COM port (RS232 Serial) through a USB cable. I have a server running and managing a facility, and I need to read data coming off the BarCode ...
user avatar
  • 11
0 votes
0 answers
84 views

Why is my USB serial device communication garbled when using minicom and how do I fix it?

I have a Aoetec Z-Stick Zwave device I am playing around with. I am trying to communicate with it using minicom and I have never tried something like this before. I asked about baud rate in a discord ...
user avatar
  • 747
0 votes
1 answer
374 views

Any way to access a serial console port using a serial-to-ethernet cable connected to an ethernet-to-USB adapter?

We have a device that has a male serial port on it to access its console. We don't have a USB-to-female serial cable. I'm trying to see if I can quickly get access to the console, without having to ...
user avatar
  • 1,750
1 vote
0 answers
45 views

Serial Port Issue

I am a new linux user, I have a workstation connected to a testing device through serial port (ttyS0) then suddenly it stopped working. I connected USB-Serial adapter to check the software also was ...
user avatar
0 votes
1 answer
82 views

Send ESC (ASCII 27) to sensor using putty

I am working on the Young anemometer 81000, datasheet: http://www.youngusa.com/Manuals/81000-90(I).pdf. Section 4.0 COMMAND MENU tells me I should send the ESC character (ASCII 27) 3 times in quick ...
user avatar
0 votes
0 answers
62 views

Deterministic serial communication using UART

We are trying to receive sensitive data each 10 msec (100 bytes) via UART communication between Raspberry Pi 4 (runs ubuntu mate) and another embedded board that uses pic18. The UART is set as follows:...
user avatar
1 vote
2 answers
97 views

What does serial really mean? Isn't USB3/SATA actually parallel? [duplicate]

As far as I understand. Serial means data is being sent one by one instead of parallel where multiple bits of data are streamed simultanously. Howewer connections like SATA and USB 3 actually have ...
user avatar
0 votes
0 answers
253 views

Minicom and screen in background

I would like to log serial port output in background. I use screen command for minicom to make sure minicom running on the background when I disconnect my ssh session. This actually works fine, but ...
user avatar
  • 111
0 votes
1 answer
44 views

PUTTY -m ,but waiting for terminal to iddle

from an ubuntu VM I try to putty to a reaspberry by through uart pins and an FTDI dongle I want to automate the upload of a text file I use : sudo putty -serial /dev/ttyUSB0 -sercfg 115200,8,n,1,N -m ...
user avatar
  • 113
3 votes
1 answer
1k views

Send ctrl-alt-del over minicom

Is there a way to send key combos (namely a sysrq) over minicom? I'm looking to issue ctrl-alt-del to a box of mine so I can shut it down gracefully. Does this exist?
user avatar
1 vote
0 answers
784 views

Arduino Nano Serial Port error on Mac OSX Catalina 1.15.4

I have just recently bought my first Arduino board. Unfortunately when I went to upload my first sketch i got an error message saying that no serial port could be detected. Under Tools>Ports I can ...
user avatar
  • 11
0 votes
1 answer
1k views

/dev/ttyACM0 lost after sleep - How to redetect / restart / rescan for ttyACM0?

I have a Ubuntu 16.04 based VM which runs inside VirtualBox on Windows 10. On my Host, I've connected a ZWave USB antenna, which I've then mapped/attached to the VM. When I first boot my VM, I can ...
user avatar
  • 981
0 votes
1 answer
195 views

How do I change my Interfaces to up instead of down status?

What command do I use to change a S0/0/0 interface with PPP Encapsulation from a line protocol of down to up? I have already applied a no shutdown command.
user avatar
1 vote
1 answer
293 views

How Serial Port Loop Back Test work internally/underneath?

When doing a Serial Loopback Test on a USB Port (assume COM1) using Hyperterminal, you can verify that the test passed if what you type on the keyboard is displayed on the Terminal (although it's not ...
user avatar
1 vote
1 answer
235 views

Are the communication protocols too different between USB and Ethernet?

I have a PA system that has 60 devices of which 57 are indoor wireless modules. They need a USB-a to b cable to program, and according to the manufacturer there is no way to program it over wireless. ...
user avatar
  • 11
1 vote
1 answer
26 views

How to format Excel cells to show only a certain part of the code my scanner scans from certain objects?

For ex: When I scan an qr code it shows: Column A1 vbmsavchjas asdhgaskhdgaskhdg_INX7642854858625 but I am only interest in the last characters: Column B1 INX7642854858625 I can use afterwards in ...
user avatar
1 vote
0 answers
49 views

Weighing Scales connected by RS232 to USB keeps disconnecting

i have some weighing scales with a serial port (RS232) and are connected to Windows 10 PC with a Serial to USB Cable. The scales are detected (COM3) and drivers are installed correctly, and im able ...
user avatar
  • 11
0 votes
0 answers
29 views

Serial console echoes back input

Modified /etc/default/grub as below and successfully setup serial console on Ubuntu 18.04 (Bionic) GRUB_CMDLINE_LINUX="console=tty1 console=ttyS0,115200" GRUB_TERMINAL="console serial&...
user avatar
  • 479
1 vote
1 answer
457 views

How to determine motherboard serial number

I determined that my motherboard is broken. Since I cannot turn on my laptop, how can I see which model of motherboard I have and what its serial number is? I need to buy new one. My laptop is a Dell ...
user avatar
1 vote
1 answer
348 views

no login when making a direct connection (USB-serial-USB) between Linux hosts

My goal is to use an FTDI null modem cable (FTDI-nmc) with integrated USB-serial converter on both ends as a simple and convenient method to occasionally log-in to various headless devices such as ...
user avatar
  • 83
1 vote
0 answers
718 views

Use USB Barcode Scanner as Serial Device

I have an USB barcode scanner that is recognized as Keyboard. I have to read the scanned barcodes in background using Java but it seems to be no way to read directly from an USB port (and I do not ...
user avatar
0 votes
0 answers
616 views

ESP8266 Serial USB adapter doesn't work on Ubuntu

So I need to program a little ESP8266 microcontroller with the Arduino IDE. But the board which is connected with a Serial-to-USB Adapter won't get detected by my Ubuntu system. The adapter: https://...
user avatar
  • 1
0 votes
1 answer
121 views

Unable to connect a TTL to USB converter to a phone

I have been unable to connect the USB side of a TTL-to-USB converter to a phone by using a Female-Female USB A adapter and a normal mobile phone cable (which can handle data). This is the converter ...
user avatar
0 votes
1 answer
1k views

How to represent a Carriage return (\r, ^M) as part of text over serial

I am trying to send a message including carriage returns (represented without pressing enter) over a serial connection. It works if i press enter with an open serial connection, but I have not found ...
user avatar
0 votes
0 answers
66 views

How to send Serial data to a UDP switch?

I have a data string I am receiving via a serial port to my computer. I would like to be able to send this data back out over UDP or TCP to a switch to be received by a remote sensor. Networking is ...
user avatar
1 vote
0 answers
304 views

Link serial /dev/ttyUSB0 to /dev/ttyS0

I have a program that communicates with an Arduino through the serial port but somehow the Arduino is showing up in the computer as /dev/ttyUSB0 and not /dev/ttyS0, which is what the program is ...
user avatar
0 votes
1 answer
42 views

Serial console buffer

when i connect to my board through serial console, launch my app which log some events with printf() and close serial console, my app can receive request and send response during a small time and then ...
user avatar
  • 1
1 vote
0 answers
159 views

Arduino Uno not showing up in tty devices?

new laptop and I have never had this issue before. My arduino Uno doesn't show up in the tty devices. lsusb: Bus 002 Device 002: ID 8087:8000 Intel Corp. Bus 002 Device 001: ID 1d6b:0002 Linux ...
user avatar
1 vote
0 answers
478 views

How can I access a SPI NAND Flash Memory in embedded Linux?

I am a newbie with embedded Linux. I am using a Leon-Linux system on my evaluation board(Grmon GR712). I can compile the Linux kernel and build an image file via build-root. I want to access an SPI ...
user avatar
  • 31
1 vote
2 answers
755 views

USB Hub dropping data from USB-to-Serial Adapters

I am currently designing a system, which needs to receive data from serial devices (mainly ARM boards). To achieve this, I use some USB-to-Serial (FTDI232) adapter(s). I coded a simple loopback ...
user avatar
  • 13
-1 votes
1 answer
171 views

Issues setting up a bridge connection for serial devices

I'm having trouble setting up a network of serial devices on a shop floor. I do have some basic networking experience but am not verbose in some of the more advanced settings. I'm trying to setup a ...
user avatar
  • 1
0 votes
1 answer
87 views

MS Excel365 Date/Serial Date - anyone else experiencing?

I am having a problem suddenly with all computers at my place of employment. If I type a number into a cell (A1), such as "121218" excel is not auto-converting to a date. In addition, when the cell ...
user avatar
  • 1
2 votes
0 answers
505 views

Node.js serialport readline parser - response devided to each sign in new line

I would need some help in resolving a node.js problem with serialport response on one computer with Ubuntu 18.04 64-bit. On the beginning I can confirm that the hardware which I have connected answers ...
user avatar
-1 votes
1 answer
467 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 ...
user avatar
0 votes
1 answer
900 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 ...
user avatar
  • 31
2 votes
2 answers
430 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 ...
user avatar
  • 5,691
8 votes
4 answers
12k 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 ...
user avatar
  • 3,823
1 vote
1 answer
2k 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 ...
user avatar
  • 141
1 vote
2 answers
7k 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 ...
user avatar
0 votes
1 answer
71 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 ...
user avatar
  • 1
9 votes
3 answers
20k 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: ...
user avatar
  • 730
1 vote
1 answer
2k 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 ...
user avatar
0 votes
2 answers
2k 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 ...
user avatar