求助：各位大哥　关于3972电机驱动问题？

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wangharry| 资深技术员

楼主 | 2008-2-20 13:52 | 只看该作者回帖奖励

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电机驱动, AN, ST, TE, DAC

小弟　用89c2051驱动3972电机芯片　用ＭＥ-52硬件仿真给出汇编小弟对汇编不了解
代码如下：
#include <reg51.h>
#define uchar unsigned char

#define drv_ref 0
#define drv_rng 1
#define drv_mod 0
#define drv_word0 0
#define drv_word1 1

sbit clockp=P1^7;
sbit datap=P1^6;
sbit strobp=P1^5;
sbit clockt=P1^4;
sbit datat=P1^3;
sbit strobt=P1^2;

uchar pan_dac1;
uchar pan_dac2;
uchar tilt_dac1;
uchar tilt_dac2;
uchar pan_phs;
uchar pan_mode;
uchar num_step;
long  pan_word0;
long  pan_word1;
long  tilt_word0;
long  tilt_word1;

void wrtwords(long bits)
{
    uchar word;
    long select;
    strobp=1;
    strobp=0;

    select=0x00040000;
    for(word=0,clockp=1;word<19;word++)
    {
        clockp=0;
        if((bits&select)>0)datap=1;
        else datap=0;
        select=select>>1;
        clockp=1;
    }
    strobp=1;
}

void write_word0(uchar xx)
{
    pan_dac1=(xx&0x1f)<<1;
    pan_dac2=((31-xx)&0x1f)<<1;
    pan_phs=xx>>5;
    if(pan_phs==0) pan_phs++;
    if(pan_phs==3) pan_phs--;
    pan_word0=pan_phs;
    pan_word0=pan_word0<<13;
    pan_word0|=pan_dac2<<7;
    pan_word0|=pan_dac1<<1;
    wrtwords(pan_word0);
}

void write_word1()
{
    pan_word1=0x00040667;
    wrtwords(pan_word1);
}

void delay(int xx)
{
    for(;xx>0;xx--);
}

void main()
{
    write_word1();
    for(;;)
    {
        delay(30000);
        write_word0(num_step);
        if(num_step++>126) num_step=0;
    }
}

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