51单片机控制直流电机PWM调速C语言程序

＃include〈reg52.h〉 ＃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 codex3［］={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); }