这是我做的红外遥控控制的1602显示转速和转向的步进电机c语言原程序,已经调试成功！有些模块是以前做其他实验时做的，现在是直接调用的,包括1602液晶显示技术,TC9012红外解码,然后就是四相步进电机的控制程序了,我是把这些东西结合起来。对这个东西有兴趣的或者要做毕业设计的可以看看啊,不懂的请上单片机论坛http://www.51hei.com/bbs/ 公开讨论，我会给大家做出详细的解答。

#include

#include#include#define uchar unsigned char

#define uint unsigned int

static unsigned int count; //计数

unsigned int hour,minute,second,count;

sbit RS = P2^3;//Pin4

sbit RW = P2^2; //Pin5

sbit E = P2^4;//Pin6

#define Data P0 //数据端口

static int step_index; //步进索引数，值为0－7

bit k=0; //红外解码判断标志位，为0则为有效信号，为1则为无效

uchar n=0; //用来控制外部中断

static bit turn; //步进电机转动方向

static bit stop_flag; //步进电机停止标志

static int speedlevel; //步进电机转速参数，数值越大速度越慢，最小值为1，速度最快

static int spcount; //步进电机转速参数计数

void delay(unsigned int endcount); //延时函数，延时为endcount*0.5毫秒

void gorun(); //步进电机控制步进函数

uchar data date[4]; //date数组为存放地址原码，反码，数据原码，反码

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;

}

/***********http://www.51hei.com单片机原创作品******************/

void ShowChar(unsigned char pos,unsigned char c)

{

unsigned char p;

if (pos>=0x10)

p=pos+0xb0; //是第二行则命令代码高4位为0xc

else

p=pos+0x80; //是第二行则命令代码高4位为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));//循环显示16个字符

}

/*******************************************************/

void InitLcd()

{

DelayMs(15);

WriteCommand(0x38); //display mode

WriteCommand(0x38); //display mode

WriteCommand(0x38); //display mode

WriteCommand(0x06); //显示光标移动位置

WriteCommand(0x0c); //显示开及光标设置

WriteCommand(0x01); //显示清屏

}

/*--------------------------延时1ms程子程序-----------------------*/

delay1000()

{

uint i,j;

for(i=0;i<1;i++)

for(j=0;j<124;j++)

;

}

/*---------------------------延时882us子程序-----------------------*/

delay882()

{

uint i,j;

for(i=0;i<1;i++)

for(j=0;j<109;j++)

;

}

/*--------------------------延时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) //延时2.4ms后如果是高电平则是新码

{

delay2400(); //延时4.8ms避开4.5ms的高电平

for(i=0;i<4;i++)

{

for(j=0;j<8;j++)

{

while(IR_RE==0); //等待地址码第1位高电平到来

delay882(); //延时882ms判断此时引脚电平

///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位数据接收结束

} //32位二进制码接收结束

}

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;

[page]

}

void int0() interrupt 0 using 1

{

uint i;

for(i=0;i<4;i++)

{

delay1000();

if(IR_RE==1){k=~k;} //刚开始为4.5ms的引导码，如果4ms内出现高电平则退出解码程序

}

if(k==0)

{

EX0=0; //检测到有效信号关中断，防止干扰

IR_decode(); //如果接收到的是有效信号，则调用解码程序

//解码成功，调用显示程序，显示该键值

}

EX0=1; //开外部中断，允许新的遥控按键

}

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; //允许CPU中断

TMOD = 0x11; //设定时器0和1为16位模式1

ET0 = 1; //定时器0中断允许

EX0=1;

TH0 = 0xFE;

TL0 = 0x0C; //设定时每隔0.5ms中断一次

TR0 = 1; //开始计数

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\');

}

}

}

}

//定时器0中断处理

void timeint(void) interrupt 1 using 0

{

TH0=0xFE;

TL0=0x0C; //设定时每隔0.5ms中断一次

count++;

spcount--;

if(spcount<=0)

{

spcount = speedlevel;

gorun();

}

}

void delay(unsigned int endcount)

{

count=0;

do{}while(count}

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;

}

}