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问 这是我写的一个步进电机程序，通过MP（代表其中一个P口）的高4位来控制，AA`BB`-4，5，6，7脚。12细分，没行数组里面分4对，每对数第一个加到P口控制电流方向，第二个数控制通电时间。正转AA`-BB`-A`A-B`B,数组由1到12行的读取，反转B`B-A`A-BB`-AA`,数组由12到1行的读取。参数POWER表示电机启动还是不启动，DIRECT参数表示方向，SPEED表示速度等级，每项通电时间用数组中的植/SPEED。本程序没考虑要走多少步的情况，调用一次就走一步。因为是第一次做，还请各位大侠帮我看看有没错误
#include <CPU8052.h>
unsigned char yx[12][8]={
                         {16,128,64,222,32,128,128,222},
                         {16,222,64,128,32,222,128,128},
                         {16,256,64,0,32,256,128,0},
                         {16,222,128,128,32,222,64,128},
                         {16,128,128,222,32,128,64,222},
                         {16,0,128,256,32,0,64,256},
                          {32,128,128,222,16,128,64,222},
                         {32,222,128,128,16,222,64,128},
                         {32,256,128,0,16,256,64,0},
                         {32,222,64,128,16,222,128,128},
                         {32,128,64,222,16,128,128,222},
                         {32,0,64,256,16,0,128,256}};  //
struct moto{
            unsigned char power;   //电机电源
            unsigned char direct;  //方向
            unsigned char speed;  //速度
            unsigned char olDSPeed;
            } moto1;

void motop(unsigned char power,unsigned char direct,unsigned char speed)

{
unsigned char i,m,motomp,n;

    if (~power) {
        MP=MP&0XF0;  }
        
    if (power) {
        if (direct) {
        for (i=0;i<12;i++) {
            for (m=1;m<8;m=m+2){
                MP=MP&0xf0+yx[i][m];
                motomp=yx[i][m+1]/speed;
                for (n=0;n<motomp;n++);
                              }
                           }
                    }
        else
            {
        for (i=0;i<12;i++) {
            for (m=7;m>0;m=m-2){
                MP=MP&0xf0+yx[i][m];
                motomp=yx[i][m+1]/speed;
                for (n=0;n<motomp;n++);
                              }
                            }
        
            }
         }
} 答 1: 怎么没人说话啊！！！ 答 2: 呵呵，好象你没问问题哦。 答 3: 我主要是问下，我这个程序有没啥错误，或改进得更好的地方！ 答 4: m永远大于0了吧？ for (m=7;m>0;m=m-2)
对于unsigned char m 来说，循环跳不出来吧 答 5: unsigned char m, m=1 ,m-2 会出现什么情况啊？？？