hi all,
I wrote a small program using ppdev. it is working on
one computer, when i am trying on the other computer i
am getting the following error
PPCLAIM: No such device or address
what could be the problem ??????
this is the programm
************************************************************************************************
program
************************************************************************************************
#include <stdio.h>
#include <linux/ioctl.h>
#include <linux/parport.h>
#include <linux/ppdev.h>
#include <fcntl.h>
int main(int argc, char *argv[])
{
int fd, mode;
unsigned char status, data;
fd = open("/dev/parport0",O_RDWR);
if (fd == -1)
{
perror("open");
exit(1);
}
if (ioctl(fd,PPCLAIM))
{
perror("PPCLAIM");
close(fd);
exit(1);
}
mode = IEEE1284_MODE_COMPAT;
if (ioctl(fd, PPNEGOT, &mode))
{
perror ("PPNEGOT");
close (fd);
return 1;
}
ioctl(fd,PPWDATA,argv[1]);
ioctl (fd, PPRELEASE);
close(fd);
}
***********************************************************************************************
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