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Date: Tue,  1 Nov 2005 10:45:12 -0300
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Subject: Question / Fiscal Printer device.
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From: "Douglas Schilling Landgraf" <pppd AT terra DOT com DOT br>
To: "cygwin" <cygwin AT cygwin DOT com>
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Hi guys,


I have a question, I have a *fiscal* printer connected to a parallel port.
On Linux I can print just doing:

       echo "Hello World" > /dev/lp0

On Cygwin I can't, I need to redirect to /dev/lpt1 ( Windows Parallel Port )

Is it normal ?


Anyway, I have made a program to print and authenticate, on Linux I can print
and authenticate documents without problem.

On Cygwin, when I try to authenticate documents with same program it blocks until
I remove the document. On Linux it works fine and It should print anyway.


Could you help me ?

#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/io.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>

#define BASEPORT 0x378
#define BASEPORT_STATUS 0x378 + 1

int main( void ) {

	unsigned char n=0;
	int fd, st;

	// Open Device
	fd = open( "/dev/lpt1", O_RDWR | O_NONBLOCK );

	// String to authenticate
	write( fd, "\x1B\x7D\x01", 3 );

	write( fd, "Teste\n", 6 );

	// Status
	ioperm( BASEPORT, 3, 1 );
	n = inb( BASEPORT_STATUS );
	ioperm( BASEPORT, 3, 0 );

	usleep(500); // wait hardware

	// print status
	printf("0x%x\n", n );

	// New line
	write( fd, "\x0a", 1);
	write( fd, "\x0a", 1);

	// Authenticate
	printf("Put document:\n");
	usleep(500);
	getchar();   // Wait keyboard

	write( fd, "Authenticate", 13 );

	// Status
	ioperm( BASEPORT, 3, 1 );
    n = inb( BASEPORT_STATUS);
    ioperm( BASEPORT, 3, 0 );
	usleep(500); // Wait hardware
	printf("0x%x\n", n );

	close( fd );


return 0;

}


Best Regards,
Douglas Schilling Landgraf



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