Sponsored Content
Top Forums UNIX for Advanced & Expert Users Communicating with Serial Port Post 302175506 by netsavant on Friday 14th of March 2008 08:16:28 AM
Old 03-14-2008
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
[root@localhost ~]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 machine.
So when i used cat not getting any output from the port. Please help me on this.
[root@localhost ~]cat /dev/ttyS0 > /opt/srldata.txt
[ctrl-c]
i had tried to pass command using echo
[root@localhost ~]echo "0x68" > /dev/ttyS0
but dont know how to get the output.
I need to collect values from the port and display it on web page using PHP on Linux. Please any Linux/Unix Gurus help me to sort this out.

Thanks in advance
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

serial port configuration

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. Programming

Telling apart serial from // port

I'm writing a journal_write() function and I want it to: - be a possible drop in replacement for write() - write entries to the journal ;-) Could be a regular file (journal.txt), a serial printer or a // printer. - handle printer status if needed. fstat() tells weather or not we're dealing with... (2 Replies)
Discussion started by: starless
2 Replies

3. Solaris

Serial Port Datalogger

Hi, I'm using Solaris workstation with 5.4 OS. I was wondering if there's a way that I could log the data incoming and outgoing on a certain serial port. Thanks in Advance! (1 Reply)
Discussion started by: uryuu
1 Replies

4. Solaris

Serial port issue

Hi, I am working with Sun Solaris 9 Sparc,Sun-Blade-100.In my application,I need to monitor the UPS using Serial port. When I am using JRE 1.4 in my application,I am able to monitor it but when I am upgrading the JRE version from 1.4 to JRE1.6. I am not able to monitor the UPS.It is showing the... (1 Reply)
Discussion started by: smartgupta
1 Replies

5. Programming

Programming serial port

Hello! Can someone advice me which method I will use if I want to communicate with device via RS232 serial port with this requirements: 1. Serial port is opened in non-canonical mode. 2. All the time I need to check is there something to read. 3. If I have to write something I need to write it... (6 Replies)
Discussion started by: jvrlic
6 Replies

6. AIX

how to know my serial port is communicating and running fine

i want to know that my serial port ( pci slot with 2 port ) is working fine and communicating is there any way to know the serialport is working and communicating? please help (3 Replies)
Discussion started by: pchangba
3 Replies

7. 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... (0 Replies)
Discussion started by: charlie.arya
0 Replies

8. 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... (3 Replies)
Discussion started by: bobby320
3 Replies

9. 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... (5 Replies)
Discussion started by: joboy
5 Replies

10. Shell Programming and Scripting

Communicating with ethernet to serial LED sign - is this feasible?

I have a london-electronics LED sign I picked up on eBay which I would like to display custom messages on programmatically. It is working ok. Opening it up, it has an ethernet to serial connection currently plugged in and a serial connection currently unplugged internally (same connectors).... (9 Replies)
Discussion started by: windswept321
9 Replies
READER.CONF(5)							    PC/SC Lite							    READER.CONF(5)

NAME
reader.conf - configuration file for pcscd readers' drivers DESCRIPTION
The /etc/reader.conf file contains configuration information for serial and (some) PCMCIA smart card readers. USB readers SHALL NOT be configured using this file. pcscd uses another mechanism to automatically load USB drivers. SYNTAX
The /etc/reader.conf is a regular text file. Each reader must be defined by four fields: FRIENDLYNAME TEXT_STRING DEVICENAME FILENAME LIBPATH FILENAME CHANNELID NUMBER The "FRIENDLYNAME" field is an arbitrary text used to identify the reader. This text is displayed by commands like pcsc_scan(1) that prints the names of all the connected and detected readers. The "DEVICENAME" field was not used for old drivers (using the IFD handler version 2.0 or earlier). It is now (IFD handler version 3.0) used to identify the physical port on which the reader is connected. This is the device name of this port. It is dependent of the OS ker- nel. The first serial port device is called /dev/ttyS0 under Linux and /dev/cuaa0 under FreeBSD. The "LIBPATH" field is the filename of the driver code. The driver is a dynamically loaded piece of code (generally a drivername.so*file). The "CHANNELID" is no more used for recent drivers (IFD handler 3.0) and has been superseded by "DEVICENAME". If you have an old driver this field is used to indicate the port to use. You should read your driver documentation to know what information is needed here. It should be the serial port number for a serial reader. EXAMPLE
# Gemplus GemPCTwin reader with serial communication # connected to the first serial port FRIENDLYNAME "GemPCTwin serial" DEVICENAME /dev/ttyS0 LIBPATH /usr/lib64/readers/serial/libccidtwin.so.0.4.1 CHANNELID 1 DEBUGGING
In order to set up your /etc/reader.conf file correctly you may want to have debug messages from pcscd. I recommend you to start pscsd in the foreground and debug mode using: # pcscd --foreground --debug If everything seems OK you can use the pcsc_scan command to print the list of correctly detected readers and try to get the ATR of your smart cards. AUTHOR
Ludovic Rousseau <ludovic.rousseau@free.fr> SEE ALSO
pcscd(8), pcsc_scan(1) Muscle August 2005 READER.CONF(5)
All times are GMT -4. The time now is 02:15 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy