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| #include "main.h"
//步进电机引脚
sbit s1=P2^3;
sbit s2=P2^4;
sbit s3=P2^5;
sbit s4=P2^6;
uchar scan_key1,scan_key2; //按键功能选择，00 停止，01 正转， 10 反转
uchar step1;step2; //加减速选择，10加速，01减速
static step_index;
uint count1,count2; //定时
static speed; //速度参数
//uint jiaNum=0,jianNum=0;
//uchar jiaChar[3],jianChar[2];
//uchar flag=0;
void main(void)
{
step2=0;
step1=0;
P1=0xff;//按键端口初始化
s1=0;s2=0;s3=0;s4=0; //电机端口初始化
EX1=1;//开启外部中断1
EA=1;//开启总中断
speed=2000;//速度初值，speed越小速度越快
// init\_1302();
LCD\_init();
// jiaChar[2]='\0';
// jianChar[2]='\0';
while(1)
{
get\_1302(time_1302);
DS1302\_change();
LCD\_display\_char(0,2,times);
LCD\_display\_char(0,1,date);
if((scan_key1==1)&&(scan_key2==0))// 正转
{
ground(step_index);
delay\_speed(speed);
step_index++; //大于7，从头再来
if(step_index>7)
step_index=0;
LCD\_display\_char(11,1," ");
LCD\_display\_char(11,1,"zhen");
}
if((scan_key1==0)&&(scan_key2==1)) //反转
{
ground(step_index);
delay\_speed(speed);
step_index--;
if(step_index<0) //小于0，从头再来。
step_index=7;
LCD\_display\_char(11,1," ");
LCD\_display\_char(11,1,"fan");
}
if(scan_key1==0&&scan_key2==0) // 停止
{
s1=0;s2=0;s3=0;s4=0;
// LCD\_display\_char(11,1," ");
LCD\_display\_char(11,1,"stop ");
// LCD\_display\_char(11,2," ");
}
if(step1==1&&step2==0) //加速
{
speed=speed-100;
// if(flag==1)
// jiaNum=jiaNum+1;
// jiaChar[0]=jiaNum+'0';
if(speed<1000||speed==1000) //速度最大阈值
{
speed=1000;
}
LCD\_display\_char(11,2," ");
LCD\_display\_char(11,2,"+su");
// LCD\_display\_char(14,2,jiaChar);
}
if(step1==0&&step2==0) //加减速归零
{
speed=2000;
// LCD\_display\_char(11,2," ");
LCD\_display\_char(11,2,"normal");
}
if(step1==0&&step2==1)//减速
{
speed=speed+100;
if(speed>2500||speed==2500) //速度最小阈值
{
speed=2500;
}
LCD\_display\_char(11,2," ");
LCD\_display\_char(11,2,"-su");
}
}
}
//速度延时控制函数
void delay\_speed(uint time)
{
for (count1=0;count1<time;count1++)
for(count2=0;count2<3;count2++);
}
//按键处理程序（利用外部中断）
void key(void) interrupt 2
{
uchar i;
uchar butter;
for(i=0;i<200;i++);//延时防抖
if(P3^3==0)
{
butter=~P1;//低电平有效先取反
switch(butter)
{case 0x01: scan_key1=1;scan_key2=0; break; //正转
case 0x02: scan_key1=0;scan_key2=0;break; //停止
case 0x04: scan_key1=0 ;scan_key2=1; break; //反转
case 0x08: step1=1;step2=0;break; //加速
case 0x10: step1=0;step2=1;break; //减速
case 0x20: step1=0;step2=0;break; //速度归零（回归初始值）
default : ; //其它值返回
}
}
P1=0Xff;//按键复位
}
//步进电机转步程序
void ground(step_index)
{
switch(step_index)
{
case 0://0
s1 = 1;
s2 = 0;
s3 = 0;
s4 = 0;
break;
case 1://0,1
s1 = 1;
s2 = 1;
s3 = 0;
s4 = 0;
break;
case 2://1
s1 = 0;
s2 = 1;
s3 = 0;
s4 = 0;
break;
case 3://1,2
s1 = 0;
s2 = 1;
s3 = 1;
s4 = 0;
break;
case 4://2
s1 = 0;
s2 = 0;
s3 = 1;
s4 = 0;
break;
case 5://2,3
s1 = 0;
s2 = 0;
s3 = 1;
s4 = 1;
break;
case 6://3
s1 = 0;
s2 = 0;
s3 = 0;
s4 = 1;
break;
case 7://3,0
s1 = 0;
s2 = 0;
s3 = 0;
s4 = 1;
}
}
|
