serial port reading

9 More Discussions You Might Find Interesting

1. Solaris

Cabling and adapters to communicate to service processor serial port from Windows PC with USB port.

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...

2. Debian

Reading data from a serial port

Dear List - I am trying to capture data from a serial port and write it to a file. /var/www$ cat /dev/ttyS0 > scale_value.html cat: /dev/ttyS0: Device or resource busy /var/www# cat /proc/tty/driver/serial serinfo:1.0 driver revision: 0: uart:16550A port:000003F8 irq:4 tx:90...

3. Shell Programming and Scripting

reading from and writing to serial port

hello all, please any one can provide me the shell script to write data to /dev/ttyS1 and read responce from /dev/ttyS1 and compare the responce to some string .. thnxx ---------- Post updated at 03:35 PM ---------- Previous update was at 11:46 AM ---------- any body help me.. how do i...

4. Solaris

How to enable Serial port on ILOM, when Network Port is enabled in parallel

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...

5. Shell Programming and Scripting

Need help with serial port

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...

6. Programming

Serial port programming

I am developing an application in c with Linux OS, where a radio modem working at baud rate 9600 will be attached to PC on serial port. More than four such units will be communicating at one time, so there may be jamming or data corruption. Each module will be transmitting Data packets less than...

7. Linux

Urgent - serial port

Hi All, I am a begineer in Linux, I have 4 ports and 3 are operational port 1,port 2 and port 4 (when I plug in serial device I can see it working) but port 3 seems it is not working. I am sure the hardware is fine. when I give command dmesg | grep tty I get, serial 8250:ttyS0 at...

8. SCO

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...

9. UNIX for Advanced & Expert Users

Communicating with Serial Port

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...

LEARN ABOUT REDHAT

statserial

STATSERIAL(1)							   User Commands						     STATSERIAL(1)

NAME

       statserial - display serial port modem status lines

SYNOPSIS

       statserial [-n |  -d | -x] <device-name>

DESCRIPTION

       Statserial displays a table of the signals on a standard 9-pin or 25-pin serial port, and indicates the status of the handshaking lines. It
       can be useful for debugging problems with serial ports or modems.

       The optional device-name parameter is the full name of the device file for the serial port in question. If not specified,  the  default	is
       taken from the environment variable MODEM if set, otherwise /dev/cua1.

COMMAND-LINE OPTIONS
       Each of the command line options is mutually exclusive.

       -n   Normally  statserial  will loop continuously, updating the status at one second intervals; you can exit using Control-C. The -n option
	    disables looping.

       -d

	    With this option the status of the modem is printed as a decimal number. The bits are encoded as follows (XXX indicates unused bits):

	    +---+---+---+---+---+---+---+---+---+
	    | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
	    +---+---+---+---+---+---+---+---+---+
	    |DSR|RI |DCD|CTS|XXX|XXX|RTS|DTR|XXX|
	    +---+---+---+---+---+---+---+---+---+

       -x   This option is the same as -d, except that the output is in hexadecimal.

BUGS
/LIMITATIONS
       Statserial only works with devices that support the TIOCMGET ioctl.

       You need permission to read the device file.

       The device file may be locked if other applications are using it.

AUTHOR

       Statserial was written by Jeff Tranter (Jeff_Tranter@Mitel.COM), later updated by Frank Baumgart (godot@uni-paderborn.de) and  is  released
       under the conditions of the GNU General Public License.	See the file COPYING and notes in the source code for details.

SEE ALSO

       setserial(8) stty(1)
       /usr/src/linux/drivers/char/serial.c /usr/include/linux/termios.h

Linux								 17 December 1994						     STATSERIAL(1)

Programming