步进电机C代码和电路

步进式电机的速度恒定即可

单片机没有数据传输过来的时候步进式电机停止，一旦有高度数据传送过来，电机即工作，上升或下降相应的距离 单片机4个 I/O控制相的的顺序

本步进电机步进角为 7.5度 . 一圈 360 度 , 需要 48 个脉冲完成!!!

A组线圈对应 P1.4 B组线圈对应 P1.5 C组线圈对应 P1.6 D组线圈对应 P1.7

正转次序: AB组--BC组--CD组--DA组 (即一个脉冲,正转 7.5 度) */

#include

#define uchar unsigned char #define uint unsigned int //正转脉冲表

//unsigned char Table_Run[4]={0x3, 0x60, 0xC0, 0x90};

//反转脉冲表

//unsigned char Table_Rev[4]={0x3, 0x90, 0xC0, 0x60}; ///没有ULN2003的情况

//unsigned char forword[]={0x06,0x07,0x03,0x0b,0x09,0x0d,0x0c,0x0e}; //unsigned char back[]={0x06,0x0e,0x0c,0x0d,0x09,0x0b,0x03,0x07};

////ULN2003

unsigned char forword[8]={0xc0,0x40,0x60,0x20,0x30,0x10,0x90,0x80};

unsigned char back[8]={0xc0,0x80,0x90,0x10,0x30,0x20,0x60,0x40}; sbit key1=P2^0; //正转 sbit key2=P2^1; //反 sbit key3=P2^2; //停止 uchar count=0; uint time=0;

//函数说明 void delay(uint t);

void front_move(uint step); void back_move(); //定时器0中断 void time0() interrupt 1 {

TH0=(65536-1000)/256; TL0=(65536-1000)%256; //time++; } //主程序 void main() { uchar i; TMOD=0x01;

TH0=(65536-1000)/256; TL0=(65536-1000)%256; ET0=1; EA=1;

TR0=1;

while(1) {

if(key1==0) {

delay(10); if(key1==0) {

front_move(12); } }

if(key2==0) {

back_move(); }

if(key3==0) {

P1=0X00; } } } //延时

//电机驱动子程序

void front_move(uint step) {

uchar i=0,j;

for(j=0;jfor(i=0;i<8;i++) {

P1=forword[i]; delay(50); } /*if(i<8) { i++; } else { i=0; } */ } } //反转

void back_move() { uchar i; for(i=0;i<8;i++) {

P1=back[i]; delay(145);

} }

void delay(uint t) /* 对于12M时钟，约延时1ms */ { uint i; while(t--) {

for (i=0;i<80;i++) {} } }