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Full Discussion: Writing to a Serial Port
Top Forums Web Development Writing to a Serial Port Post 302922143 by wisecracker on Wednesday 22nd of October 2014 04:49:34 PM
Old 10-22-2014
Right, you have in theory __proven__ your serial port is working; now give us a detailed description of what you intend/or_have connected to it, (e.g. modem, Arduino, etc)...

Turn off all flow control FTTB as this will rspond as a 3 wire, (possibly 2 wire with mods), system.

I am not sure if you require 8 bit data but if so set (E) to 9600 8N1, 9600bps, 8 bits, No parity and 1 stop bit. Remember RS232 by default is an NRZ device so 9600 is about the limit of reliable _error_free_ speed without some form of flow control.

Note:- HW I can help with remote networking is more the domain of the professionals on here.
 

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LEARN ABOUT DEBIAN

modemtest

MODEMTEST(1p)						User Contributed Perl Documentation					     MODEMTEST(1p)

NAME

       modemtest - Tool to examining your modem through Perl's Device::SerialPort

SYNOPSIS

       modemtest [OPTS] [DEVICE [BAUD [DATA [PARITY [STOP [FLOW]]]]]]

	DEVICE	  Device to use as a serial port (default: "/dev/modem")
	BAUD	  Serial speed to use		 (default: 9600)
	DATA	  Number of databits to use	 (default: 8)
	PARITY	  Type of parity to use 	 (default: "none")
	STOP	  Number of stop bits to use	 (default: 1)
	FLOW	  Kind of flow control to use	 (default: "none")

	-h, --help	     Help report
	    --skip-status    Skip modem status bit tests
	    --hide-possible  Don't show all possible settings

DESCRIPTION

       Some systems, serial ports, and modem behave in strange ways.  To test the capabilities of Perl's Device::SerialPort, this tool queries the
       system settings for the given DEVICE, and attempts to set up the port and send the initialization string "ATE1" to the modem, reporting the
       results seen.

SEE ALSO

       Device::SerialPort(3)

       perl(1)

AUTHOR

       Kees Cook <kees@outflux.net>.

COPYRIGHT AND LICENSE

       Copyright 2000-2004 by Kees Cook <kees@outflux.net>.

       This program is free software; you may redistribute it and/or modify it under the same terms ans Perl itself.

perl v5.14.2							    2006-10-28							     MODEMTEST(1p)
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