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//四個(gè)按鍵控制步進(jìn)電機(jī)：正轉(zhuǎn)，反轉(zhuǎn)，加1，減1
//上電時(shí)電機(jī)啟動(dòng)，加減檔位，電機(jī)采用單雙八拍方式
//電機(jī)轉(zhuǎn)速一共10檔，通過按鍵調(diào)節(jié)轉(zhuǎn)速
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit s1 = P1^0;
sbit s2 = P1^1;
sbit s3 = P3^0;
sbit s4 = P3^1;
sbit s5 = P3^2;//按鍵定義,s1正轉(zhuǎn)，s2反轉(zhuǎn)，s3加1，s4減1
sbit a = P2^7;sbit b = P2^6;sbit c = P2^5;sbit d = P2^4;//脈沖信號(hào)輸入端定義
uchar code time_counter[10][2]={{0xda,0x1c},{0xde,0xe4},{0xe1,0xec},{0xe5,0xd4},{0xe9,0xbc}, //9.7 ----1ms
{0xed,0xa4},{0xf1,0x8c},{0xf5,0x74},{0xf9,0x5c},{0xfc,0x18}};
uchar num1 = 0;//控制取勵(lì)磁信號(hào)變量
uchar num2 = 8;
char k=0;//加減檔位控制，1為最小檔
char pause=1;//暫停時(shí)保存之前的轉(zhuǎn)速，開機(jī)默認(rèn)1
bit flag1 = 0;//初始正轉(zhuǎn)，正反轉(zhuǎn)標(biāo)志
//================================定時(shí)器0/1初始化函數(shù)================================
void T0_T1_init()
{
TMOD = 0x11;//定時(shí)器0/1均工作于方式1,16位計(jì)時(shí)方式
TH1 = time_counter[k-1][0];
TL1 = time_counter[k-1][1];//定時(shí)器1，定時(shí)10ms用于步進(jìn)電機(jī)轉(zhuǎn)速控制
TR1 = 0;
ET1= 1;//開定時(shí)器中斷
EA = 1;//開總中斷
}
//================================ms級(jí)延時(shí)函數(shù)=======================================
void delay1m(uint x)
{
uint i,j;
for(i=0;i<x;i++) //連數(shù)x次，約 x ms
for(j=0;j<120;j++); //數(shù)120 次，約1 ms
}
//================================主函數(shù)=============================================
void main()
{
T0_T1_init();
a=b=c=d=0;
while(1)
{
if(s1 == 0)
{
delay1m(3);
if(s1 == 0)
{
flag1 = 0;//正轉(zhuǎn)
}
while(!s1);
}
if(s2 == 0 )
{
delay1m(3);
if(s2 == 0)
{
flag1 = 1;//反轉(zhuǎn)
}
while(!s2);
}
if(s3 == 0) //速度加1檔
{
delay1m(3);
if(s3 == 0)
{
k++;
TR1=1;
if(k > 10 )
{
k = 1;
}
}
while(!s3);
}
if(s4 == 0) //速度減1檔
{
delay1m(3);
if(s4 == 0)
{
k--;
TR1=1;
if(k <= 0)
{
k = 10;
}
}
while(!s4);
}
if(s5==0)
{
delay1m(3);
if(s5==0)
{
if(TR1==1)
{
pause=k;
k=0;
TR1=0;
a=b=c=d=0;
}
else if(TR1==0)
{
k=pause;
TR1=1;
}
while(!s5);
}
}
}
}
//==================================定時(shí)器1中斷函數(shù)，用于脈沖頻率控制=====================================
void time1_interrupt()interrupt 3
{
static num1 = 0;
static num2 = 0;
TH1 = time_counter[k-1][0];
TL1 = time_counter[k-1][1];//定時(shí)器1，定時(shí)1 用于步進(jìn)電機(jī)轉(zhuǎn)速控制
if(flag1 == 0)//正轉(zhuǎn)
{
switch(num1)
{
case 0:a = 1;b = 0;c = 0;d = 0;break;
case 1:a = 1;b = 1;c = 0;d = 0;break;
case 2:a = 0;b = 1;c = 0;d = 0;break;
case 3:a = 0;b = 1;c = 1;d = 0;break;
case 4:a = 0;b = 0;c = 1;d = 0;break;
case 5:a = 0;b = 0;c = 1;d = 1;break;
case 6:a = 0;b = 0;c = 0;d = 1;break;
case 7:a = 1;b = 0;c = 0;d = 1;break;
}
num1++;
if(num1 == 8)num1 = 0;
}
else //反轉(zhuǎn)
{
switch(num2)
{
case 0:a = 1;b = 0;c = 0;d = 1;break;
case 1:a = 0;b = 0;c = 0;d = 1;break;
case 2:a = 0;b = 0;c = 1;d = 1;break;
case 3:a = 0;b = 0;c = 1;d = 0;break;
case 4:a = 0;b = 1;c = 1;d = 0;break;
case 5:a = 0;b = 1;c = 0;d = 0;break;
case 6:a = 1;b = 1;c = 0;d = 0;break;
case 7:a = 1;b = 0;c = 0;d = 0;break;
}
num2++;
if(num2 == 8)num2 = 0;
}
}

復(fù)制代碼

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