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Old 03-14-2008
netsavant netsavant is offline
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Join Date: Mar 2008
Posts: 3
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
 

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