adtest.c

DSP2812 ADC源码

//AD实验，采样全为0，未加外部信号。
#include "DSP28_Device.h"

float	ADResult[16];
unsigned int k=0;
float	adclo=0.0;

interrupt void ad(void);

void main(void)
{
	InitSysCtrl();			//初始化系统

	DINT;					//关中断 
	IER = 0x0000;
	IFR = 0x0000;

	InitPieCtrl();			//初始化PIE控制寄存器
	InitPieVectTable();		//初始化PIE参数表 

	EALLOW;	
	PieVectTable.ADCINT=&ad;
	EDIS;   
    
	InitAdc();				//初始化ADC
    
	IER |= M_INT1;			// Enable INT14 which is connected to CPU-Timer 2:

	EINT;					// Enable INTM
	ERTM;					// Enable DBGM
	while(AdcRegs.ADC_ST_FLAG.bit.SEQ1_BSY==0)
	{			
		AdcRegs.ADCTRL2.bit.SOC_SEQ1=1;
	}

	for(;;)
	{
		KickDog();
	}
} 	

interrupt void ad(void)
{
	IFR=0x0000;
//	PieCtrl.PIEIFR1.all = 0;
	PieCtrl.PIEACK.all=0xffff;
	k++;
	ADResult[0]=((AdcRegs.RESULT0>>4)*3)/4095.0+adclo;
	ADResult[1]=((AdcRegs.RESULT1>>4)*3)/4095.0+adclo;
	ADResult[2]=((AdcRegs.RESULT2>>4)*3)/4095.0+adclo;
	ADResult[3]=((AdcRegs.RESULT3>>4)*3)/4095.0+adclo;
	ADResult[4]=((AdcRegs.RESULT4>>4)*3)/4095.0+adclo;
	ADResult[5]=((AdcRegs.RESULT5>>4)*3)/4095.0+adclo;
	ADResult[6]=((AdcRegs.RESULT6>>4)*3)/4095.0+adclo;
	ADResult[7]=((AdcRegs.RESULT7>>4)*3)/4095.0+adclo;
	ADResult[8]=((AdcRegs.RESULT8>>4)*3)/4095.0+adclo;
	ADResult[9]=((AdcRegs.RESULT9>>4)*3)/4095.0+adclo;
	ADResult[10]=((AdcRegs.RESULT10>>4)*3)/4095.0+adclo;
	ADResult[11]=((AdcRegs.RESULT11>>4)*3)/4095.0+adclo;
	ADResult[12]=((AdcRegs.RESULT12>>4)*3)/4095.0+adclo;
	ADResult[13]=((AdcRegs.RESULT13>>4)*3)/4095.0+adclo;
	ADResult[14]=((AdcRegs.RESULT14>>4)*3)/4095.0+adclo;
	ADResult[15]=((AdcRegs.RESULT15>>4)*3)/4095.0+adclo;
	AdcRegs.ADC_ST_FLAG.bit.INT_SEQ1_CLR=1;
	AdcRegs.ADCTRL2.bit.SOC_SEQ1=1;			//在这里设置断点
	EINT;
}