I need to talk to several serial ports. I was thinking of having a bunch of USB to serial cables and then plugging all of them into a USB hub, which goes to the computer. What I want to know is, will I see each serial port as a separate thing? With 1 USB to serial cable and no hub, I see /dev/ttyUSB0. With this hub, will I see /dev/ttyUSB0, /dev/ttyUSB1, etc?
View 1 RepliesOn my CentOS 5.2 install I've installed a dual-port serial card based on the NetMOS 9835 chipset. I've followed the serial instructions, but everything they tell me to do is already done - see setserial outputs below. I've compared these values to the lspci output (below, NetMos card is at the bottom of the output) for the card and it appears right. Problem being, I can't use the serial ports. Oh and I did use search, and looked at every 9835-related article before posting this :)
[Code]....
I have a bit of a dilemma. I'm attempting to use a microcontroller to send MIDI messages over a virtual serial port. I want to (eventually) read them with Mixxx. I'm using an FTDI chip, so I get a /dev/ttyUSB0. I've tried spikenzielabs' Serial-Midi program, but it doesn't see any serial ports. NOTEMIDI looks really old and won't compile on my 10.04 LTS machine.
View 2 Replies View RelatedI am setting up my OMAP4 board. I pluged power cable and USB port.But my OMAP4 blaze does not find ttyUSB*. I tried the same OMAP4 on other Linux machine and it is connecting to /dev/ttyUSB2. Do you know any thing I need to configure on my Linux
View 2 Replies View RelatedI am about to write a program to listen and read data from /dev/ttyS0 and write the data to /dev/ttyS1 after processing. Also, the same time I need to listen to /dev/ttyS1 and write to /dev/ttyS0 if any data arrived at /dev/ttyS1.
View 9 Replies View RelatedI am unable to access a serial port as normal user in OS 11.2. The ownership for the port,/dev/ttyS0 belongs to root:dialout. Group dialout has RW permissions.So,I guess the user has to belong to 'dialout' group.Even after a user is included in dialout port,still the user is unable to access,"Permission is Denied".
Before OS 11.2,I used to make the users members of group "uucp" to get serial port access.I tried that also in OS 11.2,without luck.So,I have to be root to access it. This requirement itself seems to be one of the fossils of old time Linux where for normal usage of PC resources,one needed elevated privileges.I guess the trend now is to let the user do all PC work,but in a safe way.
Label on card: "I-440 PCI 4S1P IO Card"
Code:
# lspci -v
...
[code].....
I have a computer with 4 RS232 com-ports (MSI MS-9A19).
To each com-port, I have instruments attached that transmit data like this:
982000001088420<CR><LF>
982000001088421<CR><LF>
[code]....
I have recently installed an ltsp system, client and server. Everything works except i cannot get my client side serial ports to work or register for that matter. Can anyone point me to the steps i should take to get these working.
View 1 Replies View RelatedI am trying to get two way serial communications going between a Windows XP system and a Linux system (RHEL 5).I have /sbin/agetty -L 9600 ttyS0
in /etc/inittab. I am using a generic USB to serial adaptor on Windows (Unitek) and a null modem cable. I have putty configured for 9600 baud, 8 bits, no parity, one stop bit, no flow control.I get the login prompt from agetty in the putty window but input does not work; I see weird characters in the putty screen. I can echo output into the device from windows and see it, but
cat < /dev/ttyS0. just prints out weird characters from what I type.
I am hoping to be able to get an old serial-touchscreen to work with a usb/serial adapter. I had this touchscreen working some years ago on different hardware. I would like to hook it to the machine I am setting up as a multimedia host with mythtv among other things.
Following the instructions I left behind when I got this to work way back when does not work. See [URL] ....
This info is a work around to get the xserver to see the touchscreen. [URL] ....
I do know that the touchscreen works as I am able to get garbage on the screen as in the first part of my howto. But I have not had any success getting xorg to see it. I wish I had posted a copy of the xorg.conf at the time, but......
There is an issue with the current xserver in testing that I am hoping the next update (in unstable) will fix when it gets pushed to testing. That is that Code: Select all# X -configure fails with a segfault. So I am not able to generate the xorg.conf needed to get it to work. I was going to post a bugreport, that is when I found out there is an update in unstable, so I am waiting for it to get pushed at the moment.
Anyway I am hoping that I can link /dev/ttyUSB0 to /dev/tty0 and get it to work. I would like some kind of guess as to my chances of success before I go to all the work of getting the monitor hooked to the host.
We have a new machine with RedHat enterprise 5 on it. I need to connect a serial cable to the serial port and talk to another system (old alpha system) instead of using a VT connected to the alpha.Does RedHat come with anything like Keaterm/hyperterm/etc etc?
View 3 Replies View RelatedI'm writting an app for desktop and embedded linux and I need to get information about the multiserial port, and I need to know which port is been used (by a printer, por example).The multiserial I'm using is an Altera Corporation Device 0004, and I just need to tell how many ports are there and how many is been used.
View 3 Replies View RelatedHow can I tell if my USB ports are 2.0 ports?
View 1 Replies View Relatedhi all,
How to find out server's HDD Serial no tried below command but didnt work,
#hdparm -I /dev/sda
so please help & Thanks in Advance.
I have cloned my linux OS onto a new hdd. Now even tho the system will boot, it directs me to the login screen and asks me to fix the location of the root dir because it is looking for /dev/disk/by-id with a very long serial #. I presume this is the old hdd serial #. How can I determine the serial # of the new hdd and change it in fstab? Is this the correct idea? Is it just......ls /dev/disk/by-id???
View 2 Replies View RelatedI am in verse to understand the serial communication between guest and host.I have just added a serial port through VI Client selecting "Use serial port on host"(host being ESX host).If I am on VM and run :
ll > /dev/ttyS0
I understand that it should get displayed through ESX Host. So On ESX Host, I typed:
cat /dev/ttyS0
But nothing worked !
Except faster reading of zone records there is not other purpose of correct SOA number,right?
View 2 Replies View RelatedCan anyone one give me some pointers please, for talking to a serial port, if I use cutecom it always returns "could not open /dev /tty0 or 1 or 3 or 4, even tried ttys0 etc
View 7 Replies View Relatedi would like to connect to my cisco via a console port and i dont konw how
View 13 Replies View RelatedI recently got an Avocent ESP 2 MI serial to IP converter to read some info information out of my Solarpanel converters. When I try to build the linux driver on my HP DLl40, running OpenSuSE 11.0, from the source rpm espx-3.17-1.src.rpm the build process exits with an error.My google searches have come up empty, unfortunately.
The log file from the installation program follows below. I am unsure what I need to do next in order to get working driver.
[Code]...
I have a laptop which has only one serial port.
I went into:
How do I know which of those "ttyS" refers to my serial port?
I am trying to get the ti_usb_3410_5052.ko driver installed but it gives a an error saying that "cannot locate the usb-serial.h file." Kindly let me know how to over come this problem. I saw in this forum about a patch but it is not working.
View 2 Replies View Relatedi need a usb to rs-232 converter to get into the console port i have an aten uc-232a converter and i have downloaded a .gz file called uplcom.4freebsd.gz i have unpacked it but i do not know what to do from here could some one please help i need to do some practice for the external icnd 2 exam and i have left it to the last minute as per usual.
View 2 Replies View RelatedI am trying to pxe boot ubuntu 10.04.When it boot up,it doesn't show up login prompt from serial console ttyS0, Why ttyS0.conf job isn't invoked automatically ? is there anything wrong with configuration?
View 1 Replies View RelatedI am able to use USB in serial mode for reading using
cu,
screen,
minicom,
jpnevulator,
[Code]....
i got this old UPS from compaq long back and installed it with a new battery. Thing is i need to connect it to my PC using this serial cable. But my mobo doest have 1. So i bought a COM port cable converter to serial and have attached the UPS through it.
Now after all this done, my PC wont detect any UPS.. i dont know whether its detecting it or not...
here is the output of dmesg|grep tty
Code:
stoned_420@stoners ~ $ dmesg|grep tty
[ 0.000000] console [tty0] enabled
[ 0.852459] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 0.852698] 00:09: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
So is my UPS being detected :-/ If not how can i know?
Am attaching pics of what all i have.. save my UPS from draining off when i'm not at home and theres a power failure
I'm having ongoing problems with my Ubuntu installation(s) almost to the point that each addition causes new problems. The latest, continual problem is periodically the computer is being used and abruptly hangs with a blank screen. Though I believe the error is associated with my having an undefined ServerName for LAMP development server. I've decided to do a fresh install with all the options included and see what happens. I need some assistance in developing an install CD/DVD which has all the packages (and configurations) that I need. I want to be able to use a serial mouse (the computer is an older one and I only have a serial mouse to use).
View 1 Replies View Relatedive been looking through several online documents and forum posts but i cant get a clearcut answer on how to set up serial port acces in ubuntu 10.04 (server).
View 7 Replies View RelatedI bought a USB Adapter (Trendnet TU-S9) so that I could connect a old camera that connects via a serial port to my newer pc that has no serial port. The problem is that the adapter,to my surprise,requires drivers or some software to work.Windows, of course, and Mac drivers came with it on a disc but.... nothing for Linux. I am running Ubuntu 11.04.
View 1 Replies View Related