51单片机控制直流电机PWM调速C语言程序

#include

#define uchar unsigned char

#define uint unsigned int

sbit KEY1 = P3^4;

sbit KEY2 = P3^5;

sbit KEY3 = P3^6;

sbit IN1 = P1^0;

sbit IN2 = P1^1;

sbit ENA = P1^2;

sfr ldata=0x80;

sbit dula=P2^6;

sbit wela=P2^7;

//sbit lcden=P3^4;

//uchar timer,ms,t_set = 1;

uchar T_N=100;

uchar T_N1=100;

uchar T_H_N=50;

uchar T_H_N1=50;

void msplay(uchar,uchar);

uchar code x1[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x27,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};

//uchar code x2[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xd8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e}; uchar code x3[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf};

//uchar code x4[]={0x01,0x02,0x04,0x08,0x10,0x20};

void delay(uint z) //延时函数

{

uint x;

for(x=z;x>0;x--);

}

void Key_Scan()

{

if(KEY1 == 0)

{

delay(20);

while(!KEY1);

T_H_N++;

if(T_H_N >=99)

{

T_H_N =99;

}

}

if(KEY2 == 0)

{

delay(20);

while(!KEY2);

T_H_N--;

if(T_H_N <= 1)

{

T_H_N = 1;

}

}

if(KEY3 == 0)

{

delay(15);

while(!KEY3);

IN1=~IN1;

IN2=~IN2;

}

}

void Motor_Init()

{

ENA = 0;

IN1 = 1;

IN2 = 0;

}

void Timer0_Init()

{

TMOD=0X12;

TH0=(256-50);

TL0=(256-50);

// TH1=(65535-T_H)/256;

// TL1=(65535-T_H)%256;

EA=1;

ET0=1;

TR0=1;

}

void main()

{

uchar k3,k2,k1,k0;

Timer0_Init();

Motor_Init();

while(1)

{

k2=T_H_N/10;k3=T_H_N%10;

k1=0;k0=0;

msplay(k0,2);

msplay(k1,3);

msplay(k2,4);

msplay(k3,5);

Key_Scan();

}

}

void timer0() interrupt 1

{

TR0=0;

// TH0=(65536-50)/256;

// TL0=(65536-50)%256;

T_H_N1--;

if(0==T_H_N1)

{

ENA=0;

T_H_N1=1;

}

T_N1--;

if(T_N1==0)

{

ENA=1;

T_N1=100;

T_H_N1=T_H_N;

}

TR0=1;

}

void msplay(uchar y1,uchar y2) {

ldata = x1[y1];

dula=1;

dula=0;

delay(1);

ldata = x3[y2];

wela=1;

wela=0;

delay(1);

ldata = 0x00;

dula=1;

dula=0;

delay(1);

ldata = 0x0ff;

wela=1;

wela=0;

delay(1);

}