/*

Dieu khien motor buoc

*/

#include "stdafx.h"

#include<conio.h>

#include<stdio.h>

#include<dos.h>

#include<PCIXP.h>

void main()

{

float step;

char k;

int i;

int add, miliseconds;

int OnePhase[8] = {0x08,0x04,0x02,0x01,0x08,0x04,0x02,0x01};

add = Get_Addr("PCI_8255");

outportb(add+3, 0x80); //thanh ghi tu dieu khien cho cong A mode ra

printf("

Nhan 't' de quay trai, 'p' de quay phai.");

printf("

Nhan 'd' de giam toc do quay, 'u' de tang toc do quay.");

printf("

Nhan 't' hoac 'p' de bat dau, 'Esc' de ket thuc chuong trinh!

");

k = getch();

miliseconds = 20;

step = 0;

do{

if(k=='t'|| k=='u' || k == 'd')

{

i=1;

do{

outportb(add,OnePhase[i++]);

printf("\rSo buoc da quay: %10.0f", step++);

Sleep(miliseconds);

if(i==8)i = 0;

}while(!kbhit());

}

else if(k=='p'|| k=='u' || k == 'd')

{

i=7;

do{

outportb(add,OnePhase[i--]);

printf("\rSo buoc da quay: %10.0f", step++);

Sleep(miliseconds);

if(i==-1)i = 7;

}while(!kbhit());

}

k = getch();

if(k=='u' && miliseconds>1)

miliseconds--;

else if (k=='d' && miliseconds<100)

miliseconds++;

}while(k!=27);

}