Protues仿真实例（8051）-步进电机C版本.rar

#include <reg51.h> #define uchar unsigned char sbit P1_0=P1^0;sbit P1_1=P1^1;sbit P1_2=P1^2;sbit P1_3=P1^3; sbit P1_4=P1^4;sbit P1_5=P1^5;sbit P1_6=P1^6;sbit P1_7=P1^7; uchar RRR,flg,KKK; //RRR用于调速控制；flg=0正转；flg=1反转; flg=2不转；KKK为P1的状态寄存 uchar loop[2][4]={{0x0c,0x06,0x03,0x09},{0x09,0x03,0x06,0x0c}}; void loop1(void); void loop2(void); void step(void); main() { uchar i,j; TMOD=0x10; TL1=0xe0; TH1=0xb1; IE=0; while(1) { if(KKK!=P1) //当P1的值发生变化，触发采集信号 loop1(); if(flg!=2) { for(i=0;i<=3;i++) { P0=loop[flg][i]; for(j=0;j<=RRR;j++) {step();} } } } } void step(void) //产生20MS的单位步时间 { TF1=0; TR1=1; while(TF1==0); TR1=0; TL1=0xe0; TH1=0xb1; } void loop1(void) //采集顺时针或逆时针信号，P1.6=1，顺时针，P1.7=1，逆时针 { KKK=P1; //暂存P1的状态 if(P1_6==1) {flg=0;loop2();} else if(P1_7==1) {flg=1;loop2();} else flg=2; } void loop2(void) { if(P1_0==1) RRR=5; else if(P1_1==1) RRR=8; else if(P1_2==1) RRR=11; else if(P1_3==1) RRR=14; else if(P1_4==1) RRR=17; else if(P1_5==1) RRR=20; }