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#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
//------8拍-----
uchar code zz[]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09}; //正轉
uchar code fz[]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01}; //反轉
sbit K1=P3^0; //停止
sbit K2=P3^1; //正轉
sbit K3=P3^2; //反轉
sbit K4=P3^3; //加速
sbit K5=P3^4; //減速
uchar state=0; //狀態變量
uint Time=60; //延時時間，用于調速
unsigned char receiveData='0';
void UsartConfiguration(); //初始化串口
void delay(uint ms) //延時，用于調速
{
uint t;
while(ms--)
for(t=0;t<120;t++);
}
void motor_zz() //正傳函數
{
uint j;
for(j=0;j<8;j++)
{
if(P3==0xfb)
break;
P1=zz[j];
delay(Time);
}
}
void motor_fz() //反轉函數
{
uint j;
for(j=0;j<8;j++)
{
if(P3==0xfb)
break;
P1=fz[j];
delay(Time);
}
}
void main()
{
UsartConfiguration();
while(1)
{
while(state==0) //狀態0，停止
{
if((K2==0)||(receiveData=='z')) //按下K2或串口接收到'z'，電機正轉
{
state=1;
receiveData='0';
break;
}
if((K3==0)||(receiveData=='f')) //按下K3或串口接收到'f'，電機反轉
{
state=2;
receiveData='0';
break;
}
P0=0xfb;
P1=0x03;
}
while(state==1) //狀態1，正轉
{
if((K1==0)||(receiveData=='t')) //按下K1或串口接收到'f'，電機反轉
{
state=0;
receiveData='0';
break;
}
if((K2==0)||(receiveData=='z')) //按下K2或串口接收到'z'，電機正轉
{
state=1;
receiveData='0';
break;
}
if((K3==0)||(receiveData=='f')) //按下K3或串口接收到'f'，電機反轉
{
state=2;
receiveData='0';
break;
}
if((K4==0)||(receiveData=='+')) //按下K4或串口接收到'+'，電機加速
{
Time=Time-5;
if(Time<20)
Time=20;
while(K4==0);
}
if((K5==0)||(receiveData=='-')) //按下K5或串口接收到'-'，電機減速
{
Time=Time+5;
if(Time>100)
Time=100;
while(K5==0);
}
motor_zz(); //狀態1，正轉
}
while(state==2) //狀態2，反轉
{
if((K1==0)||(receiveData=='t')) //按下K1或串口接收到'f'，電機反轉
{
state=0;
receiveData='0';
break;
}
if((K2==0)||(receiveData=='z')) //按下K2或串口接收到'z'，電機正轉
{
state=1;
receiveData='0';
break;
}
if((K3==0)||(receiveData=='f')) //按下K3或串口接收到'f'，電機反轉
{
state=2;
receiveData='0';
break;
}
if((K4==0)||(receiveData=='+')) //按下K4或串口接收到'+'，電機加速
{
Time=Time-5;
if(Time<20)
Time=20;
while(K4==0);
}
if((K5==0)||(receiveData=='-')) //按下K5或串口接收到'-'，電機減速
{
Time=Time+5;
if(Time>100)
Time=100;
while(K5==0);
}
motor_fz(); //狀態2，反轉
}
}
}
/************************************************************************
* 函數名 :UsartConfiguration()
* 函數功能 :設置串口
* 輸入 : 無
* 輸出 : 無
*************************************************************************/
void UsartConfiguration()
{
SCON=0X50; //設置為工作方式1
//TMOD=0X20; //設置計數器工作方式2
TMOD=0X21; //設置計數器工作方式2 和定時器0
PCON=0X80; //波特率加倍
//TH1=0XF4; //計數器初始值設置，注意波特率是4800的
//TL1=0XF4;
TH1=0XFA; //計數器初始值設置，注意波特率是9600的
TL1=0XFA;
ES=1; //打開接收中斷
EA=1; //打開總中斷
TR1=1; //打開計數器
}
void Usart() interrupt 4
{
receiveData=SBUF;//出去接收到的數據
RI = 0;//清除接收中斷標志位
}

復制代碼

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