0
votes
0answers
10 views

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 ...
0
votes
0answers
64 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 = ...
0
votes
1answer
28 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 ...
0
votes
0answers
60 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 ...
0
votes
0answers
60 views

USB to Serial driver for windows

When I connect ingenico terminal with USB cable to my windows 7 laptop, there is new COM port in device manager and I can use it. Properties show that serial port uses sagem monetel driver. I do not ...
0
votes
0answers
31 views

Avoid USB/Serial adapter port change in Windows enviroment

I would like to know if there is some way to "fix" a serial port to common usb/serial adapters. Many times I saw that changing usb port of adapter it takes a new serial port number. It happends also ...
0
votes
1answer
81 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
0answers
61 views

PL2303 board with USB to UART bridge doesn't show in Device Manager, why not?

The board works b/c if I plug in a mouse and use it the built-in way then it works fine. However, if I attach a USB male on each end from the board to the pc it doesn't recognize that the hardware is ...
1
vote
1answer
226 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
1answer
936 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. ...
1
vote
0answers
481 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
0answers
65 views

How to use USB as a COM port and USB on windows 8 (or 7) for FPGA work

I am using this FPGA: http://www.microsemi.com/products/fpga-soc/design-resources/dev-kits/igloo/igloo-plus-starter-kit I want to use it for serial communications across UART. The problem is the usb ...
1
vote
1answer
3k 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 ...
1
vote
0answers
364 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 ...
3
votes
2answers
4k 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
89 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
3answers
912 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 ...
4
votes
1answer
2k views

USB-to-Serial showing gibberish at 115200 Baud

I've got a serious problem which drives me crazy because I tried everything I could think of. First of all, I made a video: http://youtu.be/boghkuq7L_s but please read the following text for more ...
1
vote
1answer
343 views

Is it possible to make a persistent USB serial port regardless ofthe existence of the USB device?

USB serial ports, especially devices which emulate serial ports, don't quite behave the same as old serial ports, which causes a few problems with some software. old serial ports, always existed, ...
3
votes
1answer
1k views

How to connect to Linux USB serial gadget using Mac OS X?

I have an embedded device, on which I use the USB gadget USB interface to either make it available as a mass storage device, or enable access over USB serial using the g_serial module. While I can ...
1
vote
1answer
1k views

LPT port using USB

I have a machine which connects to PC with LPT port. And in the program I am selecting port number on which is LPT port connected, something like etc. ( a326 ). Now I have bought LPT to USB ...
1
vote
3answers
3k views

is there a way how to remotely control computer via USB

I am looking for a way to control my other computer (win/linux) remotely (ideally via VNC) via USB or serial - without using network or virtual network. It can be fully software based, hardware based ...
1
vote
1answer
1k views

How can I reduce high CPU usage from DPC's with USB Serial Ports

I have an app that communicates with up to 50 devices over serial ports. The communication takes place in threads, and the threads are throttled so that only a certain number are active at once. ...
1
vote
1answer
101 views

How can I replace some old serial numeric keypads?

My Problem: I have some older serial numeric keypads that are getting hard to replace. I tried a USB keypad but the distance of the cord wasn't long enough, so I tried using a USB to ethernet and ...
2
votes
3answers
9k views

How can I find out what chip is used in USB <-> Serial (RS232) converter from FTDI?

I have an USB <-> RS232 converter with no designation of producer on it. After plugging it into USB port on Windows Vista 64bit computer I chose an option to automatically find and install drivers ...
0
votes
1answer
2k views

Establishing Serial Port communication through USB in Linux

I am new to Ubuntu and I need to establish a serial port communication between my PC and microcontroller MSP430G2452. On connection the USB available with the Launchpad and using lsusb. It ...
1
vote
0answers
1k views

Prolific USB-to-Serial Comm Port significantly slower under Windows 7 comparing to Windows XP

I am using a Prolific USB-to-Serial adapter based on the Prolific chip to use with a device on serial port. I have the latest version of the driver installed: 1.3.0 (2010-7-15). When I use my device ...
0
votes
3answers
221 views

USB to RS-232 Converter Power Option

I have an device that is interfaced with RS-232 that requires power on Pin 6 at 5V and Pin 5 as ground to power the device. Is it possible to do this with an USB to RS-232 Converter? If not, what ...
0
votes
1answer
689 views

“mount” a serial port or USB or PS/2 or parallel port on a local machine over TCP/IP

let's assume I have two boxes, both running some (any) unix variant. I have root privileges on both boxes and they are networked together. I'm using A, the other is B. I'd like to "mount" the ports ...
4
votes
2answers
375 views

Is there a limit to the number of USB to RS-232 ports my computer can support?

I am looking to get a whole bunch of digital output pins that I can directly control from my CPU and I am hoping to use a whole bunch of USB to serial ports to achieve this. Assuming I am using a ...
2
votes
2answers
302 views

Why are some PCs losing data coming on over USB serial?

I have an embedded device that connects to a PC using USB and enumerates as a USB serial port. The device spits out approximately 30 megabytes of data over a period of about 15 minutes. My PC is ...
7
votes
2answers
4k views

How can I login to Ubuntu using a USB serial port?

How can enable remote terminal login into Ubuntu 9.10 using a USB serial port? I created device /dev/ttyUSB0 and i want to allow logins using Hyper-Terminal. I found some resources but they are ...
1
vote
1answer
2k views

Serial connection between 2 computers

I recently purchased a USB to serial cable to connect to other desktop computers (reason is for headless servers), and I don't know if it is working right or I am just doing something wrong. The USB ...
1
vote
2answers
234 views

USB TO DB9 Adapter

I have a USB-to-DB9 adapter, no FCC serial visible anywhere, that I need drivers for. I can't seem to get any relevant info searching on Google. Does anyone have any good ideas where I might be able ...
2
votes
3answers
4k views

RS232 to USB conversion

I want to connect some old device (with a RS232 port) to my laptop which doesn't have serial ports. I bought an adapter which is made in China and comes with no drivers CD. After searching I ...
4
votes
2answers
4k views

Cleaning up Windows XP serial ports

I have been using USB-to-serial port converters and have not been careful to plug them into -exactly- the same USB port every time. What is the best (and safest) method to clean up the giant mess of ...