正反转可控的直流电机.doc

正反转可控的直流电机

程序

#include <reg52.h>
#include <intrins.h>
#define uint unsigned int
#define uchar unsigned char
sbit K1 = P3^0;
sbit K2 = P3^1;
sbit K3 = P3^2;
sbit LED1 = P0^0;
sbit LED2 = P0^1;
sbit LED3 = P0^2;
sbit MA = P1^0;
sbit MB = P1^1;

void main(void)
{
LED1 = 1;
LED2 = 1;
LED3 = 0;
while(1)
{
if(K1 == 0) //控制正转，LED1亮
{
while(K1 == 0); //检测按键是否按下
LED1 = 0;
LED2 = 1;
LED3 = 1;
MA = 0;
MB = 1;
}
if(K2 == 0) //控制反转 ,LED2亮
{
while(K2 == 0);
LED1 = 1;
LED2 = 0;
LED3 = 1;
MA = 1;
MB = 0;
}
if(K3 == 0) //控制停止,LED3亮
{
while(K3 == 0);
LED1 = 1;
LED2 = 1;
LED3 = 0;
MA = 0;
MB = 0;
}
}
}