04-22-2008
Serial port configuration
Hi
I have just re-installed Compaq ML350 G2 Server with Unix SCO 5.0.5 and
informix DBMS .
on this server we have 2 serial ports , unfortunately its not working.
Can anyone help me to check the serial ports working or not OR guide me
to reconfigure it.
I have attached a device with serial port but device not receiving any signal
from the port.
Pls if you have any soloution for my problem , reply me.
Regards,
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I am having trouble with a device connected through a serial port on my sun workstation ( I am running solaris 7).
The seriel device works on an identical workstation running the same o/s version but when I move it to the initial workstation it doesn't work. I am using an rs232 serial cable and... (1 Reply)
Discussion started by: Henrik
1 Replies
2. Linux
I have a serial modem connected to a usb port using an adapter cable. The system is a HP DL360. RedHat ES3.0
I am using the device /dev/ttyUSB0
When I issue the command "mgetty ttyUSB0" I get the following output in the log file.
How do I get the system to see the modem.
12/02 14:17:55... (2 Replies)
Discussion started by: jshoovie
2 Replies
3. UNIX for Advanced & Expert Users
I am using system running on red hat linux 4.
I had connected health measuring machine to the serial port and configured it
stty -F /dev/ttyS0 9600 -parenb cs8 -cstopb
this machine requires a command to be passed to it for giving output. I am unable to pass command hexa format(0x68) to the... (4 Replies)
Discussion started by: netsavant
4 Replies
4. UNIX for Dummies Questions & Answers
I need make serial data from virtual serial ports available on a TCP/IP network.
For communications with hardware COM ports to send and receive serial data over a local network or the Internet.
Example:
POSIX machine (/dev/ttyS0) <--- TCP/IP ---> Windows machine COM1
Please help! I try use... (0 Replies)
Discussion started by: steel98
0 Replies
5. Programming
I have a need to determine when a string has been completely sent via a serial port from a standard 'C' application. The code is as follows:
SerialPort_Send = open (pPortString, O_WRONLY | O_NOCTTY | O_NONBLOCK);
write (SerialPort_Send, pCommandString, strlen (pCommandString));
... (2 Replies)
Discussion started by: ExDes
2 Replies
6. Shell Programming and Scripting
Hi,
I have a external board connected to my serial port. I need to execute "shutdown -r now" command when system boot up. When system boots up it requires a username ans password. Then I need to run my command. I can use rc script but that is rebooting system before it asks for username and... (0 Replies)
Discussion started by: charlie.arya
0 Replies
7. Solaris
Hi Everyone,
In my environment, I have few T5220. On the iLOM Management Card, I have both Network and Serial port are cabled, I don't have any issues while I try to connect using Network Management port, but when I try to connect the serial port for the same server which is actually connected... (3 Replies)
Discussion started by: bobby320
3 Replies
8. Programming
Hi
I try to communicate with a GSM modem, from C, for sending SMS.
I use standart AT-commands.
Working well with terminal.
There is no problem writing ti the port.
But when I try to read I only get a echo, I write "ATI" and get "ATI" back, I should get somthing like "SIEMENS 35... (4 Replies)
Discussion started by: dmiller
4 Replies
9. Solaris
Hello,
I have an unloaded T5140 machine and want to access the ILOM for the first time and subsequently the network port after that., and then load Solaris 10 the final January 2011 build.
The first part is what confuses me -the cabling.
I am coming from a Windows machine (w/appropriate... (5 Replies)
Discussion started by: joboy
5 Replies
10. Red Hat
I have 1 serial port (9 Pin) attached with my Linux server.If I give
$dmesg | grep tty , it provides me the following.
ttyS0 and ttyS1.
I have 1 COM port with my server mother board. I have 1 customized application
that requires this COM port to be used.
The parameter to be set for COM port... (4 Replies)
Discussion started by: Anjan Ganguly
4 Replies
LEARN ABOUT NETBSD
pcweasel
PCWEASEL(4) BSD Kernel Interfaces Manual PCWEASEL(4)
NAME
pcweasel -- Support for the PC-Weasel serial console board
SYNOPSIS
pseudo-device pcweasel
weasel* at pci? dev ? function ?
Note that the appropriate display device must also be enabled. See pcdisplay(4) for more information.
DESCRIPTION
The PC-Weasel is a serial console board for use primarily on Intel-based PC-class systems. It addresses a problem that nearly everyone who
has deployed a PC-class server has experienced: the total lack of remote management capability on PC-class hardware.
In addition to serial console support, the PC-Weasel provides the ability to remotely reset the system (by means of a hardware reset signal),
and provides a watchdog timer function.
The PC-Weasel works by emulating the original IBM Monochrome Display Adapter (MDA). Writes to the display's character cells are translated
into ANSI terminal sequences which are then sent out the PC-Weasel's serial port. Incoming characters are translated into PC keyboard scan
codes and then fed (by means of a cable) into the system's keyboard controller. The system believes it is using a display console. This is
particularly important in the event that one needs access to BIOS configuration menus.
The PC-Weasel also includes a ST16550 serial port, which may be configured as any one of the system's serial ports. Typical usage is to con-
figure the port as com0 at ISA I/O address 0x3f8. When the PC-Weasel detects activity on the ST16550, the serial port is automatically con-
nected to the ST16550 so that the serial port may be used as normal. When the PC-Weasel detects activity on the internal UART used for MDA
emulation, the serial port is automatically reconnected to the emulation UART. This allows the boot program and kernel to be configured to
use the serial port directly (which is more efficient than using the MDA emulation mode), yet allows the MDA emulation to be reestablished as
soon as the kernel loses control of the system.
The pcweasel driver provides support for the additional features present on the PC-Weasel. At the moment, this includes support for the
watchdog timer function. Use of the pcweasel driver is not required in order for the system to function with a PC-Weasel installed so long
as only the MDA emulation and ST16550 serial port functionality is required.
SEE ALSO
pcdisplay(4), wdogctl(8)
HISTORY
The pcweasel driver first appeared in NetBSD 1.5.1.
AUTHORS
The PC-Weasel was invented by Herb Peyerl and Jonathan Levine at Canada Connect Corporation. It is now produced by Middle Digital, Inc.,
http://www.realweasel.com/
The pcweasel driver was written by Jason R. Thorpe <thorpej@zembu.com>, and contributed by Zembu Labs, Inc. Herb Peyerl of Middle Digital,
Inc. provided several firmware updates during the development of the driver.
BSD
November 23, 2007 BSD