ad.c

f2812 内部ad 调试成功 f2812 内部ad 调试成功

/******************************************************************************/
/*  Copyright 2004 by SEED Electronic Technology LTD.                         */
/*  All rights reserved. SEED Electronic Technology LTD.                      */
/*  Restricted rights to use, duplicate or disclose this code are             */
/*  granted through contract.                                                 */
/*  MODULE NAME... DARAM on board											  */
/*  FILENAME...... DEC5416_SRAM.c											  */
/*  PROJECT....... Read and write on-board daram memory of TMS320VC5502	      */
/*  作者: gao		                                                          */
/*  版本:1.0                                                                  */
/*  日期:06.11.10                                                             */
/******************************************************************************/
#include <math.h>
#include "DSP28_Device.h"
#include "comm.h"
///////////////////////////////////////////////////////////////////
#define SAMPLERATE   2
unsigned int SampleRate;
unsigned int SampleLong=1024;
///////////////////
unsigned int i,j;
unsigned int Ad_data[1536]={0};
//////////////////
unsigned int convcount = 0;
volatile unsigned int adconvover =0;
// Prototype statements for functions found within this file.
interrupt void ISRTimer2(void);
interrupt void ad(void);
/*****************************************************************************/
void main(void){
	/*初始化系统*/
	InitSysCtrl();

	#if SAMPLERATE==1
		SampleRate =ADSAMPL8K;
	#endif
	#if SAMPLERATE==2
		SampleRate =ADSAMPL44K;
	#endif
	#if SAMPLERATE==3
		SampleRate =ADSAMPL96K;
	#endif

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

	/*初始化PIE中断*/
	InitPieCtrl();

	/*初始化PIE中断矢量表*/
	InitPieVectTable();	
	
    //初始化cputimer
    InitCpuTimers();
    
	/*设置中断服务程序入口地址*/
	EALLOW;	// This is needed to write to EALLOW protected registers

	PieVectTable.TINT2 = &ISRTimer2;
	PieVectTable.ADCINT = &ad;

	EDIS;   // This is needed to disable write to EALLOW protected registers
	
	/*开中断*/
	IER |= M_INT1;//ADC中断
	
	EINT;   // Enable Global interrupt INTM
	ERTM;	// Enable Global realtime interrupt DBGM
	
	/*启动AD采样*/	
	/*AD采样率*/
	adconvover=0;
	switch( SampleRate){
		case  ADSAMPL8K:	//采样率为8k
			DINT;
		/*设置CPU*/
			ConfigCpuTimer(&CpuTimer2, 150, 125);	
 			StartCpuTimer2();
   			/*开中断*/
			IER |= M_INT14;
			EINT;
			InitAdc();
			SampleRate = 0;
			break;
		case  ADSAMPL44K: 	//采样率为44k  
			DINT;
			/*设置CPU*/
			ConfigCpuTimer(&CpuTimer2, 150, 22);	
 			StartCpuTimer2();
   		 	/*开中断*/
			IER |= M_INT14;
			EINT;
			InitAdc();
			SampleRate = 0;
			break;
		case  ADSAMPL96K:	//采样率为96k 
			DINT;
			/*设置CPU*/
			ConfigCpuTimer(&CpuTimer2, 150, 10);	
 			StartCpuTimer2();
   			/*开中断*/
			IER |= M_INT14;
			EINT;
			InitAdc96k();
			SampleRate = 0;
		break;
		default:
			break;
	}	   			
		
	for(;;){					
		if (adconvover==1){
			adconvover=0;	
		}	
	}
} 	

interrupt void ad(void)
{
	IFR=0x0000;
	PieCtrl.PIEACK.all=0xffff;
	if(adconvover==0){
		Ad_data[convcount] = AdcRegs.RESULT0;
		convcount++;
	}
	if (convcount==(SampleLong+SampleLong/2))
	{
		convcount=0;
 		adconvover=1;//接满标志	
	}	
}

interrupt void ISRTimer2(void)
{
	AdcRegs.ADC_ST_FLAG.bit.INT_SEQ1_CLR=1;
	AdcRegs.ADCTRL2.bit.SOC_SEQ1=1;	
	
}

//===========================================================================
// No more.
//===========================================================================