這是我做的紅外遙控控制的1602顯示轉(zhuǎn)速和轉(zhuǎn)向的步進(jìn)電機(jī)c語言原程序,已經(jīng)調(diào)試成功！有些模塊是以前做其他實(shí)驗(yàn)時做的
，現(xiàn)在是直接調(diào)用的,包括1602液晶顯示技術(shù),TC9012紅外解碼,然后就是四相步進(jìn)電機(jī)的控制程序了,我是把這些東西結(jié)合起來。對這個東西有興趣的或者要做畢業(yè)設(shè)計的可以看看啊,不懂的請上單片機(jī)論壇http://www.zg4o1577.cn/bbs/ 公開討論，我會給大家做出詳細(xì)的解答。

#include <AT89X51.h>

#include<stdio.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
static unsigned int count; //計數(shù)
unsigned int hour,minute,second,count;

sbit RS = P2^3;//Pin4
sbit RW = P2^2; //Pin5
sbit E = P2^4;//Pin6

#define Data P0 //數(shù)據(jù)端口
static int step_index; //步進(jìn)索引數(shù)，值為0－7
bit k=0; //紅外解碼判斷標(biāo)志位，為0則為有效信號，為1則為無效
uchar n=0; //用來控制外部中斷
static bit turn; //步進(jìn)電機(jī)轉(zhuǎn)動方向
static bit stop_flag; //步進(jìn)電機(jī)停止標(biāo)志
static int speedlevel; //步進(jìn)電機(jī)轉(zhuǎn)速參數(shù)，數(shù)值越大速度越慢，最小值為1，速度最快
static int spcount; //步進(jìn)電機(jī)轉(zhuǎn)速參數(shù)計數(shù)
void delay(unsigned int endcount); //延時函數(shù)，延時為endcount*0.5毫秒
void gorun(); //步進(jìn)電機(jī)控制步進(jìn)函數(shù)
uchar data date[4]; //date數(shù)組為存放地址原碼，反碼，數(shù)據(jù)原碼，反碼
char data Test1[]=" ";
#define IR_RE P3_2
void DelayUs(unsigned char us)//delay us
{
unsigned char uscnt;
uscnt=us>>1;/* Crystal frequency in 12MHz*/
while(--uscnt);
}
/******************************************************************/
void DelayMs(unsigned char ms)//delay Ms
{
while(--ms)
{
DelayUs(250);
DelayUs(250);
DelayUs(250);
DelayUs(250);
}
}
void WriteCommand(unsigned char c)
{
DelayMs(5);//short delay before operation
E=0;
RS=0;
RW=0;
_nop_();
E=1;
Data=c;
E=0;
}
/****************************************************************/
void WriteData(unsigned char c)
{
DelayMs(5); //short delay before operation
E=0;
RS=1;
RW=0;
_nop_();
E=1;
Data=c;
E=0;
RS=0;
}
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void ShowChar(unsigned char pos,unsigned char c)
{
unsigned char p;
if (pos>=0x10)
p=pos+0xb0; //是第二行則命令代碼高4位為0xc
else
p=pos+0x80; //是第二行則命令代碼高4位為0x8
WriteCommand (p);//write command
WriteData (c); //write data
}
/*************************************************************************/
void ShowString (unsigned char line,char *ptr)
{
unsigned char l,i;
l=line<<4;
for (i=0;i<16;i++)
ShowChar (l++,*(ptr+i));//循環(huán)顯示16個字符
}
/*********************************************************************/
void InitLcd()
{
DelayMs(15);
WriteCommand(0x38); //display mode
WriteCommand(0x38); //display mode
WriteCommand(0x38); //display mode
WriteCommand(0x06); //顯示光標(biāo)移動位置
WriteCommand(0x0c); //顯示開及光標(biāo)設(shè)置
WriteCommand(0x01); //顯示清屏

}

/*--------------------------延時1ms程子程序-----------------------*/
delay1000()
{
uint i,j;
for(i=0;i<1;i++)
for(j=0;j<124;j++)
;
}

/*---------------------------延時882us子程序-----------------------*/

delay882()
{
uint i,j;
for(i=0;i<1;i++)
for(j=0;j<109;j++)
;
}

/*--------------------------延時2400ms程子程序-----------------------*/

delay2400()
{
uint i,j;
for(i=0;i<3;i++)
for(j=0;j<99;j++)
;
}
void IR_decode()
{
uchar i,j;
while(IR_RE==0);
delay2400();
if(IR_RE==1) //延時2.4ms后如果是高電平則是新碼
{
delay2400(); //延時4.8ms避開4.5ms的高電平
for(i=0;i<4;i++)
{
for(j=0;j<8;j++)
{
while(IR_RE==0); //等待地址碼第1位高電平到來
delay882(); //延時882ms判斷此時引腳電平
///CY=IR_RE;
if(IR_RE==0)
{
date[i]>>=1;
date[i]=date[i]&0x7f;
}
else if(IR_RE==1)
{
delay1000();
date[i]>>=1;
date[i]=date[i]|0x80;
}
} //1位數(shù)據(jù)接收結(jié)束
} //32位二進(jìn)制碼接收結(jié)束

}
if (date[2]==0x16)
TR0 = 0;
else if(date[2]==0x14)
{TR0 = 1;
}
else if(date[2]==0x10)
{if (speedlevel>1)
speedlevel--;
else
speedlevel=1;
}
else if(date[2]==0x1A)
{if(speedlevel<5)
speedlevel++;
else
speedlevel=5;
}
else if(date[2]==0x11)
turn=~turn;

}
void int0() interrupt 0 using 1
{
uint i;
for(i=0;i<4;i++)
{
delay1000();
if(IR_RE==1){k=~k;} //剛開始為4.5ms的引導(dǎo)碼，如果4ms內(nèi)出現(xiàn)高電平則退出解碼程序
}

if(k==0)
{
EX0=0; //檢測到有效信號關(guān)中斷，防止干擾
IR_decode(); //如果接收到的是有效信號，則調(diào)用解碼程序
//解碼成功，調(diào)用顯示程序，顯示該鍵值
}
EX0=1; //開外部中斷，允許新的遙控按鍵
}
void main(void)
{
InitLcd();//
DelayMs(15);

sprintf(Test1,"STEP MOTOR SPEED");//the first line
ShowString(0,Test1);
ShowChar(0x19,'r');
ShowChar(0x1a,'p');
ShowChar(0x1b,'m');
count = 0;
step_index = 0;
spcount = 0;
stop_flag = 0;

P1_0 = 0;
P1_1 = 0;
P1_2 = 0;
P1_3 = 0;
SP=0x60;
EA = 1; //允許CPU中斷
TMOD = 0x11; //設(shè)定時器0和1為16位模式1
ET0 = 1; //定時器0中斷允許
EX0=1;
TH0 = 0xFE;
TL0 = 0x0C; //設(shè)定時每隔0.5ms中斷一次
TR0 = 1; //開始計數(shù)
turn=0;

speedlevel=1;

while(1)
{
if(turn==0)
ShowChar(0x14,'+');
else
ShowChar(0x14,'-');
if(TR0 ==0)
{
ShowChar(0x15,'0');
ShowChar(0x16,'0');
ShowChar(0x17,'0');
ShowChar(0x18,'0');
}
else
{
if(speedlevel==1)
{
ShowChar(0x15,'3');
ShowChar(0x16,'0');
ShowChar(0x17,'0');
ShowChar(0x18,'0');
}
else if(speedlevel==2)
{
ShowChar(0x15,'1');
ShowChar(0x16,'5');
ShowChar(0x17,'0');
ShowChar(0x18,'0');
}
else if(speedlevel==3)
{
ShowChar(0x15,'1');
ShowChar(0x16,'0');
ShowChar(0x17,'0');
ShowChar(0x18,'0');
}
else if(speedlevel==4)
{
ShowChar(0x15,'0');
ShowChar(0x16,'7');
ShowChar(0x17,'5');
ShowChar(0x18,'0');
}
else if(speedlevel==5)
{
ShowChar(0x15,'0');
ShowChar(0x16,'6');
ShowChar(0x17,'0');
ShowChar(0x18,'0');
}
}
}
}
//定時器0中斷處理
void timeint(void) interrupt 1 using 0
{
TH0=0xFE;
TL0=0x0C; //設(shè)定時每隔0.5ms中斷一次

count++;

spcount--;
if(spcount<=0)
{
spcount = speedlevel;
gorun();
}

}

void delay(unsigned int endcount)
{
count=0;
do{}while(count<endcount);
}

void gorun()
{
if (stop_flag==1)
{
P1_0 = 0;
P1_1 = 0;
P1_2 = 0;
P1_3 = 0;
return;
}

switch(step_index)
{
case 0: //0
P1_0 = 1;
P1_1 = 0;
P1_2 = 0;
P1_3 = 0;
break;
case 1: //0、1
P1_0 = 1;
P1_1 = 1;
P1_2 = 0;
P1_3 = 0;
break;
case 2: //1
P1_0 = 0;
P1_1 = 1;
P1_2 = 0;
P1_3 = 0;
break;
case 3: //1、2
P1_0 = 0;
P1_1 = 1;
P1_2 = 1;
P1_3 = 0;
break;
case 4: //2
P1_0 = 0;
P1_1 = 0;
P1_2 = 1;
P1_3 = 0;
break;
case 5: //2、3
P1_0 = 0;
P1_1 = 0;
P1_2 = 1;
P1_3 = 1;
break;
case 6: //3
P1_0 = 0;
P1_1 = 0;
P1_2 = 0;
P1_3 = 1;
break;
case 7: //3、0
P1_0 = 1;
P1_1 = 0;
P1_2 = 0;
P1_3 = 1;
}

if (turn==0)
{
step_index++;
if (step_index>7)
step_index=0;
}
else
{
step_index--;
if (step_index<0)
step_index=7;
}

}

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