#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/parport.h>
#include <linux/ppdev.h>
#include <sys/io.h>

#include <stdio.h>
#include <stdlib.h>


//Prototype functions
int goForward();
int goForwardRight();
int goForwardLeft();
int goBackward();
int goBackwardRight();
int goBackwardLeft();
int powerOn();
int powerOff();

//The address where the printer port lives
int addr = 0x378;

int main()
{

	int x, num, slp;
	
	sleep(3);
	srand(clock(NULL));

	for(x = 0; x < 145; x++)
	{
		
		num = rand() % 7 + 1;
		slp = rand() % 2 + 1;
		
		if(num == 0)
		{
		goForward();
		}
		if(num == 1)
		{
		goBackward();
		}
		if(num == 2)
		{
		goForwardRight();
		}
		if(num == 3)
		{
		goForwardLeft();
		}
		if(num == 5)
		{
		goBackwardRight();
		}
		if(num == 6)
		{
		goBackwardLeft();
		}
		if(num == 7)
		{
		powerOff();
		}

		sleep(slp);

	}

	powerOff();
  return 0;
}

//Power on function - not very useful on its own, used to test for address verification
int powerOn()
{
	int result = ioperm(addr,5,1);
	outb(0x01, addr);
	return 0;
}

//Power off - function to be called before each new set of instructions to put all outputs low
int powerOff()
{
	int result = ioperm(addr,5,1);
	outb(0x00, addr);
	return 0;
}

//Forward function - pin addr 0x09
int goForward()
{
	int result = ioperm(addr,5,1);
	powerOff();
	outb(0x09, addr);
	return 0;
}

//Forward and right - pin addr 0x0B
int goForwardRight()
{
	
	int result = ioperm(addr,5,1);
	powerOff();
	outb(0x0B, addr);
	return 0;
}

//Forward and left - pin addr 0x0D
int goForwardLeft()
{
	int result = ioperm(addr,5,1);
	outb(0x0D, addr);
	return 0;
}

//Reverse - pin addr 0x81
int goBackward()
{
	int result = ioperm(addr,5,1);
	powerOff();
	outb(0x81, addr);
	return 0;
}

//Reverse and right - pin addr 0x83
int goBackwardRight()
{
	int result = ioperm(addr,5,1);
	powerOff();
	outb(0x83, addr);
	return 0;
}

//Reverse and left - pin addr 0x85
int goBackwardLeft()
{
	int result = ioperm(addr,5,1);
	powerOff();
	outb(0x85, addr);
	return 0;
}