《姬家寨村单片机控制步进电机》姬家寨村电子科技研究所研制！

硬件电路设计：姬学瑞；软件程序编写：姬学瑞：版权所有，侵权必究！

#include <reg51.h>

#include<string.h>

#define uchar unsigned char

#define uint unsigned int

//--LCD控制引脚

sbit RS=P3^0;

sbit RW=P3^1;

sbit EN=P3^3;

//--按键

sbit K1=P2^0;

sbit K2=P2^1;

sbit K3=P2^2;

sbit K4=P2^3;

sbit K5=P2^4;

uchar WaveChoice=1;

uchar ys=30;

uchar i,a=0;

uchar sqar_num=128;

uint freq;

uchar code Sin[]={"Sine      "};

//uchar code exp[]={"Exp      "};

uchar code Squ[]={"Square    "} ;

uchar code Tri[]={"Triangle  "};

uchar code Saw[]={"Sawtooth  "} ;

uchar code No[]={"No Signal out "};

uchar code Wave[]={"Wave :"};

uchar code Fre[]={"Freq :"};

uchar code tosin[256]=

{0x80,0x83,0x86,0x89,0x8d,0x90,0x93,0x96,0x99,0x9c,0x9f,0xa2,0xa5,0xa8,0xab,

0xae,0xb1,0xb4,0xb7,0xba,0xbc,0xbf,0xc2,0xc5,0xc7,0xca,0xcc,0xcf,0xd1,0xd4,0xd6,0xd8,

0xda,0xdd,0xdf,0xe1,0xe3,0xe5,0xe7,0xe9,0xea,0xec,0xee,0xef,0xf1,0xf2,0xf4,

0xf5,0xf6,0xf7,0xf8,0xf9,0xfa,0xfb,0xfc,0xfd,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,

0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfd,0xfc,0xfb,0xfa,0xf9,0xf8,0xf7,0xf6,0xf5,

0xf4,0xf2,0xf1,0xef,0xee,0xec,0xea,0xe9,0xe7,0xe5,0xe3,0xe1,0xde,0xdd,0xda,0xd8,

0xd6,0xd4,0xd1,0xcf,0xcc,0xca,0xc7,0xc5,0xc2,0xbf,0xbc,0xba,0xb7,0xb4,0xb1,0xae,0xab,

0xa8,0xa5,0xa2,0x9f,0x9c,0x99,0x96,0x93,0x90,0x8d,0x89,0x86,0x83,0x80,

0x80,0x7c,0x79,0x76,0x72,0x6f,0x6c,0x69,0x66,0x63,0x60,0x5d,0x5a,0x57,0x55,

0x51,0x4e,0x4c,0x48,0x45,0x43,0x40,0x3d,0x3a,0x38,0x35,0x33,0x30,0x2e,0x2b,

0x29,0x27,0x25,0x22,0x20,0x1e,0x1c,0x1a,0x18,0x16,0x15,0x13,0x11,0x10,0x0e,

0x0d,0x0b,0x0a,0x09,0x08,0x07,0x06,0x05,0x04,0x03,0x02,0x02,0x01,0x00,0x00,

0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x02 ,0x02,0x03,0x04,

0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0d,0x0e,0x10,0x11,0x13,0x15,0x16,0x18,

0x1a,0x1c,0x1e,0x20,0x22,0x25,0x27,0x29,0x2b,0x2e,0x30,0x33,0x35,0x38,0x3a,

0x3d,0x40,0x43,0x45,0x48,0x4c,0x4e ,0x51,0x55,0x57,0x5a,0x5d,0x60,0x63,0x66 ,

0x69,0x6c,0x6f,0x72,0x76,0x79,0x7c,0x80 }; //正弦波码

//--延时MS

void DelayMS(uchar ms)

{

uchar i;

while(ms--) for(i=0;i<120;i++);

}

//--延时y*9us

 void Delay1(uint y)

 {

  uint i;

for(i=y;i>0;i--);

 }

//-------------

//忙检查

//-----------------------------

uchar Busy_Check()

{

uchar LCD_Status;

RS=0;  // 寄存器选择

RW=1; //读状态寄存器

EN=1;  // 开始读

DelayMS(1);

LCD_Status=P1;

EN=0;

return  LCD_Status;

}

//----------------------------

//写LCD命令

//---------------------------------

void Write_LCD_Command(uchar cmd)

{

   while((Busy_Check()&0x80)==0x80);   //忙等待

   RS=0;  //选择命令寄存器

   RW=0;  //写

   EN=0;

   P1=cmd;EN=1;DelayMS(1);EN=0;

}            

//--------------------------------------

//发送数据

//---------------------------------------

void Write_LCD_Data(uchar dat)

{

 while((Busy_Check()&0x80)==0x80);   //忙等待

  RS=1;  RW=0; EN=0; P1=dat;EN=1;DelayMS(1);EN=0;

}

//------------------------------------

//LCD初始化      

//-----------------------------------------

void Init_LCD()

{  

Write_LCD_Command(0x38);

DelayMS(1);

Write_LCD_Command(0x01); //清屏

DelayMS(1);

Write_LCD_Command(0x06); //字符进入模式：屏幕不动，字符后移

DelayMS(1);

Write_LCD_Command(0x0C); //显示开、关光标

DelayMS(1);

}

//--向LCD写频率值

void Write_freq(uint k)

{

uchar qian,bai,shi,ge;

qian=k/1000;

bai=k/100%10;

shi=k/10%10;

ge=k%10;

Write_LCD_Command(0x86+0x40);

Write_LCD_Data(0x30+qian);

Write_LCD_Data(0x30+bai);

Write_LCD_Data(0x30+shi);

Write_LCD_Data(0x30+ge);

Write_LCD_Data(0x48);

Write_LCD_Data(0x5a);

}

 //--LCD上显示不同波形频率

  void Xianshi_f()     

{

  if(WaveChoice==1)

  {

     freq=(10000000/(50000+2860*ys));

 Write_freq(freq);

  }

  if(WaveChoice==2)

  {

     freq=(10000000/(50000+2300*ys));

 Write_freq(freq);

  }

   if(WaveChoice==3)

  {

     freq=(10000000/(14000+2300*ys));

 Write_freq(freq);

  }

    if(WaveChoice==4)

  {

     freq=(10000000/(15000+2300*ys));

 Write_freq(freq);

  }

}

//--LCD上写波形类型

void Write_wave(uchar  t )

{

switch(t)

{

case 0:

//-- 无输出

 Write_LCD_Command(0x86);

       DelayMS(5);

        for (i=0;i<sizeof(No)-1;i++)

{

Write_LCD_Data(No[i]);

DelayMS(5);

}

break;

case 1:

//--正弦波

ys=25;

Write_LCD_Command(0x86);

       DelayMS(5);

        for (i=0;i<sizeof(Sin)-1;i++)

{

Write_LCD_Data(Sin[i]);

DelayMS(5);

}

break;

case 2:

//---矩形波

ys=30;

Write_LCD_Command(0x86);

       DelayMS(5);

        for (i=0;i<sizeof(Squ)-1;i++)

{

Write_LCD_Data(Squ[i]);

DelayMS(5);

 }

break;

case 3:

//---三角波

ys=30;

Write_LCD_Command(0x86);

       DelayMS(5);

        for (i=0;i<sizeof(Tri)-1;i++)

{

Write_LCD_Data(Tri[i]);

DelayMS(5);

}

break;

case 4:

//----锯齿波

ys=30;

    Write_LCD_Command(0x86);//液晶显示位置

       DelayMS(5);

        for (i=0;i<sizeof(Saw)-1;i++)

{

Write_LCD_Data(Saw[i]);

DelayMS(5);

 }

break;

}

}

//---输出波形

void Out_Wave(uchar i)

{  uchar j;

switch(i)

{

case 0: P0=0x00;break;

case 1:

//---正弦波

for (j=0;j<255;j++)

{

P0=tosin[j];

Delay1(ys);

}

 break;

case 2:

//----矩形波

{

if(a<sqar_num)

{

P0=0xff;

Delay1(ys);

}

else  

{

P0=0x00;

Delay1(ys);

}

a++;

}  break;

case 3:

//----三角波

{

if(a<128)

{

P0=a;

Delay1(ys);

}

else  

{

P0=255-a;

Delay1(ys);

}

a++;

}   break;

case 4:

   //----锯齿波

{

    if(a<255)

{

P0=a;

Delay1(ys);

}

a++;

if(a==255)

{

a=0;

}   break;

}

}

}

//----按键扫描

void keyscanf()

{

if(K2==0)

{

DelayMS(5);

if(K2==0)

{

while(!K2);

ys--;

if(ys==0)

ys=20;

}

}

if(K3==0)

{

DelayMS(5);

if(K3==0)

{

while(!K3);

ys++;

if(ys>22)

ys=20;

}

}

if(K4==0)

{

DelayMS(5);

if(K4==0)

{

while(!K4);

if(WaveChoice==2)

sqar_num=sqar_num+2;

if(sqar_num==238)

sqar_num=128;

}

}

if(K5==0)

{

DelayMS(5);

if(K5==0)

{

while(!K5);

if(WaveChoice==2)

sqar_num=sqar_num-2;

if(sqar_num==18)

sqar_num=128;  

}

}

}

//----主程序---

void main()

{

Init_LCD();

IE=0X81;

IT0=1;

Write_LCD_Command(0x80);//--显示wave:

    DelayMS(5);  

   for (i=0;i<sizeof(Wave)-1;i++)

{

Write_LCD_Data(Wave[i]);

DelayMS(5);

}

     Write_LCD_Command(0x80+0X40);//----显示freq:

     DelayMS(5);

    for (i=0;i<sizeof(Fre)-1;i++)

{

Write_LCD_Data(Fre[i]);

DelayMS(5);

}

   Write_wave(WaveChoice);

while (1)

{

 keyscanf();

Out_Wave(WaveChoice);

if(!(K1&K2&K3))

Xianshi_f();

}   

}

//---INT0中断

void EX_INT0() interrupt 0

{

WaveChoice++;

if(WaveChoice==5) WaveChoice=1;

Write_wave(WaveChoice);

}