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Questions tagged [serial]

The general purpose communication interface and related protocols. Specifically, a serial interface transfers one bit at a time ("in serial"), and complies with the RS-232 standard.

The general purpose communication interface and related protocols. Specifically, a serial interface transfers one bit at a time ("in serial"), and complies with the RS-232 standard.

215 questions
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Using PuTTY for serial connection

I am attempting to enable web-management functionality on my Dell PowerConnect2824. From what I can tell by reading the manual I need to connect via the serial port to enable web functionality. I picked up a serial-to-USB adaptor and installed the…
user30875
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Can't get grub2 boot menu via COM2 port

I want to connect my "CentOS Linux release 7.6.1810 (Core)" device via COM2 port,then I modify '/etc/default/grub': GRUB_TIMEOUT=5 GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g'…
mrco
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Alternatives to Kermit for transferring HD contents via a serial cable Win3.1 -> Vista

I'm trying to transfer the contents of some VERY old laptops which have Windows 3.1 on them. The only way I can manage this is via a serial cable (no network on the laptops). I've got Kermit on the W3.1 end but it is playing up and won't run nicely,…
Ryan ONeill
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How to tell whether a serial connection is "established"?

We have a Debian-based embedded device. It runs an application that communicates with other embedded equipment via serial (RS-232, /dev/ttyS*). Usually, this works just fine. But of course, sometimes things go wrong and while our app can still send…
Nils Toedtmann
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pretty-printing IP packets

I'm receiving IP packets using the SLIP protocol, and I'd like to pretty-print them similarly to how tcpdump does it. My program is able to decode the SLIP protocol and create a single string containing an IP packet if necessary. I couldn't find any…
pts
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Connecting a USB laptop to a RJ45 serial port

We are about to get our first managed switch at work (Procurve 2520G-24-PoE), and this lowly programmer gets to put on his admin hat and try to configure it. The switch has an RJ45 serial port for console access. My laptop has USB ports but no…
Jon
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Is it possible to create Virtual Serial (COM) Ports

I'm working on software that needs to communicate with hardware over RS232 interfaces. In order to test I'm currently using 2 USB-TO-SERIAL devices connected to eachother using an RS232 cable. (Of course both USB devices are connected to the same…
TimothyP
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Are serial-to-ethernet adapters interchangeable?

I need to get data from a serial device (a weather station) over our network where it'll be processed by a Unix host (using custom software). I was able to compile remserial which makes the remote serial device act like a tty. Remserial was…
Clinton Blackmore
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Remapping Linux serial port device names

I have a server running Debian Linux which has a built in serial port which is coming up as ttyS0. I have a plug in PCI card with two serial ports that are being registered with Linux as ttyS2 and ttyS3. Unfortunately I am trying to run some…
davefiddes
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Is it possible to reset FTDI virtual com ports enumeration, we easily get hundreds of COM ports in production environment

When producing devices that use a FTDI USB to serial chip to communicate with a Windows host, we get hundreds of COM-ports, since Windows seems to just increase the port number each time a new FTDI vid+pid+serial is connected to the PC. I have…
icecream
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Can't get a serial console on MikroTik RB4011iGS+

I am trying to connect to the serial console of my MikroTik RB4011iGS+. I might be missing something obvious, but I can't seem to get a terminal (or anything else). Relevant documentation…
Valmiky Arquissandas
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HP Procurve 2650 has password set after factory reset

I have a problem with HP ProCurve 2650 switch. I don't have a password to it so I did a factory reset (pressing reset and clear buttons for 10 seconds). The problem is it still asks for the password. It restarts but doesn't clear its configuration…
XorOrNor
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SLIP Connections in Windows 7

I'm looking for a way to set up a SLIP connection in Windows 7. I found these instructions for setting it up under Windows XP, but I can't seem to figure out if it's possible under 7. More info on SLIP if you're unfamiliar with it. Thanks for your…
Bob Somers
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Snow Leopard Compatible Drivers for Moschip MCS7720 USB-to-Serial Controller

We are using Cables Unlimited USB-2925 USB-to-Dual-DB9 serial cables, which use the Moschip MCS7720 controller. We have downloaded the newest driver from http://www.moschip.com/mcs7720.php, but that driver was last updated in 2005. It does not seem…
Kristopher Johnson
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Two port PCI serial card. One port can only set baud rate once

I have a new PCI serial card, being used on a Ubuntu 14.04 box. It's serial ports show up as /dev/ttyS4 and /dev/ttyS5. $ dmesg | grep ttyS [ 0.732690] 00:03: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 0.733604]…
fadedbee
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