interrupt_ad.c

在采样的基础上实现数码管显示和利用TI公司的FFT算法进行运算

#include "AD.h"
#include "2407.h"
#include "System.h"
void interrupt c_AD(void) {
    
	int  AD_temp=0;
//	asm(" SETC INTM");
	if(*PIVR!=0x0001) 
	      return;
//	*T3CON = 0x9002;
    
//*****************
    asm(" CLRC INTM");
	++FLAG_AD_FINISH;
	
	asm(" clrc XF");
	switch(TONGDAO_A) {
		case 1:
			AD_temp =AD_SPACE;  //Q15
			AD_temp =(AD_temp<<2)>>2;
			AD_temp =AD_temp*ADK;			
			AD_DATA_Y[FLAG_AD_FINISH-1]=AD_temp;
			break;
		case 2:
			AD_DATA_Y[2*FLAG_AD_FINISH-2] = AD_SPACE;
			AD_DATA_Y[2*FLAG_AD_FINISH-1] = AD_SPACE;
			break;
		case 3:
			AD_DATA_Y[3*FLAG_AD_FINISH-3] = AD_SPACE;
			AD_DATA_Y[3*FLAG_AD_FINISH-2] = AD_SPACE;
			AD_DATA_Y[3*FLAG_AD_FINISH-1] = AD_SPACE;
			break;
		case 4:
			AD_DATA_Y[4*FLAG_AD_FINISH-4] = AD_SPACE;	
			AD_DATA_Y[4*FLAG_AD_FINISH-3] = AD_SPACE;
			AD_DATA_Y[4*FLAG_AD_FINISH-2] = AD_SPACE;
			AD_DATA_Y[4*FLAG_AD_FINISH-1] = AD_SPACE;
			break;
		default:
			break;
	}


	if(FLAG_AD_FINISH==128)
	{		
	    FLAG_AD_FINISH=0;                   //采样点数加1
	    *XINT1CR &= 0xFFFE ;                        //关中断INT2
	    IsFlashData=1;                   //开始刷新数据
	    DataProc();                          //数据处理 
	       
	 //   IsControl++;
	/*    if (IsControl==200)  
	    {   
	     //  IsFlashData=1;                   //开始刷新数据	 
	    
	     //  *XINT1CR &= 0xFFFE;	                //关外部中断
	     
	   //    *IMR &=0xff1f;                        //关中断INT2
	      DataProc();                          //数据处理                        
	      IsControl=0;
	     }  */
	}	
	
	AD_INITIAL(TONGDAO_A);          //初始化AD
	asm(" NOP ");
	asm(" NOP ");
	*XINT1CR |=0x8000;
//	asm(" CLRC INTM");
	asm(" NOP ");
	asm(" NOP ");
	return ;
//	return;
}