直流电机的速度环PI控制-速度电流检测部分.rar

#include <absacc.h> #include <reg51.h> #define IN0 XBYTE[0x7ff8] unsigned char disbit[]={0xfe,0xfd,0xfb,0xf7}; unsigned char code discode[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; unsigned int disbuf[4]={0,0,0,0}; unsigned int ad=100; unsigned char q=0; unsigned char *Adr; unsigned char count,miaoshu; unsigned char sec,tcnt; sbit p26=P2^6; void delay(unsigned char N) { unsigned char i; for(i=0;i<N;i++); } void display(unsigned char ch) { unsigned char k; //显示，常用的一种程序，可以把disbuf数组变成一个暂时变量输出 disbuf[0]=ch%10; disbuf[1]=(ch%100)/10; disbuf[2]=ch/100%10; disbuf[3]=1; for(k=0;k<4;k++) { P2=0xff; // p2作为输出，必须先置高电平 P1=discode[disbuf[k]]; P2=disbit[k]; } } void read_ch(void) interrupt 0 using 0 { ad=*Adr; } void t0(void) interrupt 1 using 0 //定时T0中断服务函数 { tcnt++; //每过250ust tcnt 加一 if(tcnt==40) //计满40 次（1/100 秒）时 { tcnt=0; //重新再计 sec++; if(sec==10) //定时0.1 秒，在从零开始计时 { sec=0; TH0=0x06; //对TH0 TL0 赋值 TL0=0x06; miaoshu=count; count=0; } } } void sdf(void) interrupt 2 using 0 //计数T1中断服务函数 { count=count+1; } main() { unsigned int m; unsigned char s1=0x44; EX0=1; IT1=1; Adr=&IN0; TMOD=0x02; //定时器T0工作在方式2 自动重装方式,计数器T1工作在方式2 自动重装方式 TH0=0x06; //对TH0 TL0 赋值 TL0=0x06; TR0=1; //开始定时 ET0=1; //允许T0 产生中断 EA=1; EX1=1; TR1=1; IT1=1; EA=1; sec=0; SCON=0x90; //MODER1,REN=1; PCON=0x00; miaoshu=0;tcnt=0;count=0; while(1) { *Adr=0; for(m=0;m<5000;m++) { if(p26==1) {display(ad); } else { display(miaoshu); } } do{ SBUF=0xff; while(TI==0);TI=0; while(RI==0);RI=0; }while(SBUF!=0xbb); SBUF=ad; while(TI==0);TI=0; } }