教你用l298驱动步进电机

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1、L298驱动步进电机（原创）2009-03-3013:52#include#include"reg52.h"                              //包含头文件   /*与编译器无关的数据类型定义*//********************************************************************************************/typedefunsignedchar     uint8;               //无符号8位整型变量typedefsig

2、ned  char     int8;                //有符号8位整型变量typedefunsignedshort    uint16;              //无符号16位整型变量typedefsigned  short    int16;               //有符号16位整型变量typedefunsignedint      uint32;              //无符号32位整型变量typedefsigned  int      int32;               //有符号32位整

3、型变量typedeffloat             fp32;                //单精度浮点数（32位长度）typedefdouble            fp64;                //双精度浮点数（64位长度）/********************************************************************************************/sbitP0_0=P0^0;sbitP0_1=P0^1;sbitP0_2=P0^2;sbitP0_3=P

4、0^3;sbitP0_4=P0^4;sbitP0_5=P0^5;sbitP0_6=P0^6;sbitP0_7=P0^7;//定义位变量//==========================================================////==========================================================/*********************************************************************************

5、***********函数名称：Delay()*功   能：软件延时*入口参数：count   延时参数，值越大，延时越长*出口参数：无*********************************************************************************************/voidDelay(uint16count){uint8i;               while(--count!=0)          {    for(i=0;i<125;i++);             

6、  //";"表示空语句,CPU空转。  }                              //i从0加到125，在12M晶体下CPU大概耗时1毫秒}//=================================================voidmain(void)               {while(1)                                    {   P0_0=1;P0_1=0;P0_2=0;P0_3=0;Delay(50);                       

7、       //控制转速   P0_0=1;P0_1=1;P0_2=0;P0_3=0;Delay(50);P0_0=0;P0_1=1;P0_2=0;P0_3=0;   Delay(50);   P0_0=0;P0_1=1;P0_2=1;P0_3=0;Delay(50);   P0_0=0;P0_1=0;P0_2=1;P0_3=0;   Delay(50);P0_0=0;P0_1=0;P0_2=1;P0_3=1;   Delay(50);P0_0=0;P0_1=0;P0_2=0;P0_3=1;   Delay(50);P0_0=1;P0

8、_1=0;P0_2=0;P0_3=1;   Delay(50);   }}