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Accessing printer through serial port

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Operating Systems OS X (Apple) Accessing printer through serial port
# 1  
Old 03-28-2009
Accessing printer through serial port
Hey, im new to processing so any help you could give me would be much appreciated.
I am trying to get control of the rollers on my 9 pin dot matrix printer (epson LX 300+). Initially I was going to do this through arduino but hope to do it through processing using the serialwrite programme.

The printer has a serial port and I am using the a serial to USB on my MAC OSX 10.4 system.

I am trying to understand the serial write application but am finding it very difficult.
In string portName = serial.list()[0] I'm not sure what to put in, but the result I get from doing this is:

Native lib Version = RXTX-2.1-7
Java lib Version = RXTX-2.1-7

but when I change the [0] to 1 I get:

Experimental: JNI_OnLoad called.
I googled these results and did not find anything too helpful.

I have been told that I should find the manual for the printer and this will tell me what to put into the simpleWrite, but what am I exactly looking for in the manual.

Any help you could give would be much appreciated.

Thank you.

p.s. I dont have a driver for the cable but can obtain it. Unfortunately I can't find drivers for the printer that will work on my MAC OS.
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LEARN ABOUT MOJAVE

curs_print

curs_print(3X)															    curs_print(3X)

NAME

       mcprint - ship binary data to printer

SYNOPSIS

       #include <curses.h>

       int mcprint(char *data, int len);

DESCRIPTION

       This function uses the mc5p or mc4 and mc5 capabilities, if they are present, to ship given data to a printer attached to the terminal.

       Note  that  the	mcprint  code  has  no	way to do flow control with the printer or to know how much buffering it has.  Your application is
       responsible for keeping the rate of writes to the printer below its continuous throughput rate (typically about half  of  its  nominal  cps
       rating).  Dot-matrix printers and 6-page-per-minute lasers can typically handle 80cps, so a good conservative rule of thumb is to sleep for
       a second after shipping each 80-character line.

RETURN VALUE

       The mcprint function returns ERR if the write operation aborted for some reason.  In this case, errno will contain either an error  associ-
       ated with write(2) or one of the following:

       ENODEV
	    Capabilities for printer redirection do not exist.

       ENOMEM
	    Couldn't allocate sufficient memory to buffer the printer write.

       When mcprint succeeds, it returns the number of characters actually sent to the printer.

PORTABILITY

       The mcprint call was designed for ncurses(3X), and is not found in SVr4 curses, 4.4BSD curses, or any other previous version of curses.

BUGS

       Padding in the mc5p, mc4 and mc5 capabilities will not be interpreted.

SEE ALSO

       curses(3X)

																    curs_print(3X)