原创 转灯箱控制器

/******************************************************************
** 文件名:旋转灯箱控制器
** Copyright (c)2003/3 

** 创建人:李军    leejun@qingdaonews.com
** 日　期:2006－1－3
** 修改人:
** 日　期:
** 描　述:    晶震：6mhz
**            芯片：89c51
                  三个接近开关：上限位，下限位，中间停留位
              1）此程序未验证。
              2）顺序编写程序，不是循环运行，程序稳固性有待改进。
* 版　本:01
**----------------------------------------------------------------
******************************************************************
     #include <AT89S51.h>
      #include <absacc.h>
     #include <intrins.h>
     #include <stdio.h>

     #define True   1
     #define Flase  0
     #define UpFlag     1
     #define DownFlag   0
     #define AllStopFlag 0x55
     extern void  timer_ini(void);
     //extern void  delay_ms(unsigned char i);
     //如果上升限位＝ 0，则到顶了
     #define   NearSwitchUpLimit  P10
     //如果下降限位 = 0，到底了
     #define   NearSwitchDownLimit P16
     //如果中间控位 ＝ 0，是中间一幅。
     #define   NearSwitchMiddleContrl     P13

     #define   RelayUp          P20
     #define   RelayDown          P21
     #define   StopUp            RelayUp = 0;
     #define   StopDown          RelayDown = 0;
     #define   StartUp           RelayUp = 1;
     #define   StartDown         RelayDown = 1;
     led_segment [10]={0x3f,0x30,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};  // led的段码(不带小数点) 0,1,2,3,4,5,6,7,8,9

     uchar  data time_flag;
     uchar  data count,time_count;
     uchar data UpDownStateFlag;   // 上升，下降状态标志位。
                                   //  == 1,  up ;    == 0, down;    ==0x55,stop
  void delay_ms(uchar i)
        {uint j;
          do  {
               do   {
                     j--;
                    }while(j==0);
               i--;
              }while(i==0);

        }

 /**************** sub timer0_ini **********************/
 void timer0_ini(void)
      {
        IE="0x82";  // 只打开T0中断

        TH0=0x00;TL0=0x00;    //2us*50000 = 100s
        TMOD="0x01";       // 定时器0 ，方式1。
        TF0=Flase;
        TR0=True;

        time_flag = 0;
      }
 /*******************中断子程序****************************/

  void tmr0 (void) interrupt 1 using 3     // 0.5ms a interrupt
          {
            static uint i;
            i++;
            TF0=Flase;
            TH0=0;TL0=0;
            if (i > 400)
                {time_flag = 1;
                 i = 0;
                 }

            }

 void clrwdt(void)       // Clear the watchdog ,
 {
        WDTRST = 0x1E;
        WDTRST = 0xE1;
 }

 /*********************************************************/

main()
{ uchar temp_i,x,y;   //通用

      clrwdt();
       timer0_ini();
       UpDownStateFlag = 0;
//**************** main program ***************************************
    
       do
       {
              clrwdt();
              if (NearSwitchUpLimit == 0)     // 如果上升限位＝ 0;
                     { StopUp; StopDown;
                       timer0_ini();            //开始计时
                       while(time_flag ==1)
                            { clrwdt();
                             RelayUp = RelayDown = 0;}  //计时不完，停止运行。 //电机全停止
                            }
                        while(NearSwitchUpLimit != 0)
                             {StartDown;
                             }
                         StartDown;   
                      }  
  //-----------------------------------------------------------------
              if (NearSwitchMiddleContrl == Flase)  //运行到中间时
                     {
                               StopUp; StopDown;    
                               timer0_ini();               //开始计时
                      while(time_flag ==1)
                            { clrwdt();
                             StopUp; StopDown;}  //计时不完，停止运行。 //电机全停止
                            }
                      while( NearSwitchMiddleContrl == True)
                             {StartDown; }
                             StartDown;
                      }

                     
 //-------------------------------------------------------------------

              if ( NearSwitchDownLimit ==0)     //下降传感器感应中
                     { StopDown;
                       timer0_ini();               //开始计时
                         while(time_flag ==1)
                            { clrwdt();
                             StopUp; StopDown;}  //计时不完，停止运行。 //电机全停止
                            }
                         while(NearSwitchDownLimit != 0)
                             { StartUp;}   
                        StartUp;
                   }
//______________________________________________________________________                                 
      if (NearSwitchMiddleContrl == Flase)  //运行到中间时
                     {
                               StopUp; StopDown;   
                               timer0_ini();               //开始计时
                      while(time_flag ==1)
                            { clrwdt();
                             StopUp; StopDown;}  //计时不完，停止运行。 //电机全停止
                            }
                      while( NearSwitchMiddleContrl == True)
                             {StartUp; }
                           
                      StartUp;
                      }                 
 
       }while(1);
   //-----------------------------------------------------------------------
    }