writing parallel port output to file (vmware)
Posted: Sun Mar 14, 2010 4:13 pm
hi
im posting this here because in the vmware forum im signed up with no one seemed to have an idea
in my vmware player, i configured all parallel port output to go to a file on my host machine like this:
in my ubuntu guest, i wrote a simple c program that writes something to the parallel port:
but file parport.txt on my host remains empty (i would have expected letter 'a' to appear)
has anyone experience with using vmware to direct parport output to a file? am i doing something wrong here or am i getting something wrong about parport programming in general?
i know this is probably not the right question for this forum, but you never know...
im posting this here because in the vmware forum im signed up with no one seemed to have an idea
in my vmware player, i configured all parallel port output to go to a file on my host machine like this:
Code: Select all
parallel0.present = "TRUE"
parallel0.fileName = "/home/sancho/parport.txt"
parallel0.autodetect = "TRUE"
parallel0.bidirectional = "TRUE"
parallel0.fileType = "file"Code: Select all
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/io.h>
#include <errno.h>
#include <string.h>
#define base 0x378 /* printer port base address */
#define value 'a' /* numeric value to send to printer port */
main(int argc, char **argv)
{
if (ioperm(base,100,1))
{
fprintf(stderr, "Couldn't get the port at %x: %s\n", base, strerror(errno));
exit(1);
}
outb(value, base);
}has anyone experience with using vmware to direct parport output to a file? am i doing something wrong here or am i getting something wrong about parport programming in general?
i know this is probably not the right question for this forum, but you never know...