test4.c.html

CTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "DTD/xhtml1-strict.dtd"> test4.c.html
// should work  http://cscene.org
// this little test program only sends data out the parallel port

#include <stdio.h>
#include <unistd.h> /* needed for ioperm() */
#include <asm/io.h> /* for outb() and inb() */
#include <curses.h> /* for reading characters without pressing "return" */

#define PORT 0x378
#define DATA 0x378
#define STATUS DATA+1
#define CONTROL DATA+2


   int main(int argc, char **argv)
   {
   int i,n=0,toggleport,value=0;
   //int value = 0;

   for (i=1;i<argc-1;i++) {
        sscanf(argv[i],"%x",&n);
        //sscanf(argv[++i],"%x",&v);
	}

   if (ioperm(DATA,3,1)) {
        printf("Sorry, you were not able to gain access to the ports\n");
        printf("You must be root to run this program\n");
        exit(1);
        }

   outb(n,PORT);
   //outb(DATA, x); /* Sends 0011 0010 to the Data Port */
   //outb(CONTROL, y^0x0b);

   /* SELECT_IN = 1, INIT = 0, /AUTO_FEED = 0, /STROBE = 0 */

   // figure out what to send

   initscr();
   cbreak();

   while(1){
	printw ("enter a output (1-8) you want to toggle; press 0 to turn them all off; q to quit  \n");
	// go to "curses" mode  no std. unix I/O can be used here!


	toggleport=getch();
	toggleport=toggleport-48;

	if (toggleport==65){
		printw ("\n end \n ");
		break;
	}
	// scanf ("%d",&toggleport);
	while (toggleport<0||toggleport>=9){
		printw("\n enter a number between 1 and 8 for the parallel port number you want to turn on or of; q to quit... you entered: %d \n", toggleport);
		toggleport=getch();
		toggleport=toggleport-48;
		//scanf ("%d",&toggleport);
		if (toggleport==65){
			printw ("\n end \n ");
			break;
		}
	}

	if (toggleport==0) {
		printw ("clearing port, all off");
		value=0;
		outb(0,PORT);
	}
	else{
		printw ("\n value was: %d...",toggleport);
		if (toggleport==1) value=value+1;
		if (toggleport==2) value=value+2;
		if (toggleport==3) value=value+4;
		if (toggleport==4) value=value+8;


		if (toggleport==5) value=value-1;
		if (toggleport==6) value=value-2;
		if (toggleport==7) value=value-4;
		if (toggleport==8) value=value-8;




		//send the data to PORT
	//	ioperm(PORT,1,1);
		printw("sending to port %d \n",value);
		outb(value,PORT);
		//sleep(1);
	// outb(0,PORT);
	}
	//done
	printw("done\n\n");
	// sleep(1);
   }

   endwin();
   outb(0,PORT);
   printf("end \n");
   return (0);
   }