单片机 C语言

只看该作者 · 2014-4-9 10:18

#include <reg51.h>
#define uchar unsigned char
#define uint  unsigned int

//四项八拍正转励磁顺序：A->AB—>B->BC->C->CD->D->DA
uchar code FFW[]={0x01,0x03,0x02,0x06,0x04,0x0C,0x08,0x09};

//反转励磁顺序：AD->D->CD->C->BC->B->AB->A
uchar code REV[]={0x09,0x08,0x0C,0x04,0x06,0x02,0x03,0x01};

sbit K1=P3^0;       //正转
sbit K2=P3^1;          //反转
sbit K3=P3^2;          //停止

//延时
void delay(uintx)
{
uchar i;
while(x--) for(i=0;i<120;i++);
}

//正转
void SETP_MOTOR_FFW(uchar n)
{
uchar i,j;
for (i=0;i<5*n;i++)
{
   for (j=0;j<8;j++)
   {
      if(K3==0) break;
P1=FFW[j];
delay(25);
   }
   }
}

//反转
void SETP_MOTOR_REV(uchar n)
{
uchar i,j;
for (i=0;i<5*n;i++)
{
   for (j=0;j<8;j++)
   {
      if(K3==0)  break;
P1=REV[j];
delay(25);
   }
   }
}

//主程序
void main()
{
  uchar N=3;       //运转圈数
  while(1)
  {
if(K1==0)
{
   P0=0xFE;    //LED1点亮
   SETR_MOTOR_FFW(N);       //电机正传
   if(K3==0)    break;
   }
   else if(K2==0)
   {
   P0=0xFD;
   SETP_MOTOR_REV(N);       //电机反转
   if(K3==0)  break;
   }
   else
   {
      P0=0xFB;                //LED3点亮
      P1=0x03;
   }
}
}

有一个错误BUJINGDIANJI.C(20): error C202: 'x': undefined identifier 怎么解决？