distance.c

使用MC9S12DG128芯片

#include  "includes.h"

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

void dist_Func(void)

{
      INT8U LcdDist[] = {"check distance                  "};
            
      LcdWriteAll(LcdDist);
      
      InitPA();            //读取CarDistance变量可以获得当前脉冲计数 
    
      ClearPA();
	
	    StartPA();  
     
      for(;;) {
      
           //display PWM menu
      
      while (KeyFlag == ON) {
        
         KeyFlag = OFF;
        
        if (ValueKey == Enter){CalDistance();} 
        
        else if (ValueKey == Exit) return;    //if have exit key,go back
        
       }
      
     }
}

void CalDistance(void) {

    INT16U Distance = 0;
    
    for(;;) {
      
    Distance = CarLocation;
	  
	  LcdWrite16U(0x80,Distance,4);
	  
	  Distance = CarDistance;
	  
	  LcdWrite16U(0xC0,Distance,4);
	  
	  while (KeyFlag == ON)
	  
	    KeyFlag = OFF;
	    
	    if (ValueKey == Exit) return;    //if have exit key,go back
    }

}