请问谁用过NJU39610+NJM3771 驱动步进电机?

只看该作者 · 2009-12-5 10:42

我用这两个芯片驱动电机
电机轻微的左右震荡,就是不转?
什么原因呢,哪位高手能说一下?

只看该作者 · 2009-12-5 10:42

#include <reg52.h>
#include <intrins.h>

#define uint unsigned int
#define uchar unsigned char
//NJU39610端口定义

#define DA_PORT P2
sbit DA_WR=P3^6;       //NJU39610数据写入端；
sbit DA_A1=P3^5;
sbit DA_A0=P3^4;
sbit DA_CS=P3^3;

//全局变量定义
unsigned char data  xf_step;
unsigned char xdata xf32_sin[30]={0,12,24,31,43,54,65,76,85,
                              94,102,109,115,120,124,126,
                              124,120,115,109,102,94,
                              85,76,65,54,43,31,24,12
                              };
unsigned char xdata xf32_cos[30]={126,124,120,115,109,102,94,
                              85,76,65,54,43,31,24,12,0,
   12,24,31,43,54,65,76,85,
                              94,102,109,115,120,124,
                              };


void del(uint v)
{
  while(v!=0)v--;
}
void main(void)
{
DA_CS=1;
xf_step=0;
while(1)
  {

   DA_A1=0;
   DA_A0=0;                      //选DA通道0；
   DA_CS=0;
   DA_PORT=xf32_sin[xf_step]|0x80;
   DA_WR=0;                      //DA数据写入；
   del(10);
   DA_WR=1;

   DA_CS=1;
   DA_A1=0;
   DA_A0=1;
   DA_CS=0;
   DA_PORT=xf32_cos[xf_step]|0x80;
   DA_WR=0;
   del(10);
   DA_WR=1;
   del(10);
   DA_CS=1;
   del(400);

xf_step++;
if(xf_step>=64) xf_step=0;
  }
}