mcbsp_ad.c

6713DSP 多通道音频串口 AD编程

/******************************************************************************/
/*  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.                                                 */
/******************************************************************************/
/********************************************************************************\
\*DEC6713_CODEC.c		-Codec AIC23B test programme.
\********************************************************************************/
#include <csl.h>
#include <csl_mcasp.h>
#include <csl_mcbsp.h>
#include <csl_i2c.h>
#include <DEC6713.h>
#include <codec.h>
#include <IIC.h>
#include <comm.h>
/////////////////////
volatile unsigned int* p_DECCTL=(volatile unsigned int *)0xB0000000; 
///////////////////
#define ADSAMPL8K  0x0c
#define ADSAMPL44K 0x22
#define ADSAMPL96K 0x1c 


PMcbspForDec6713 psend;
PMcbspForDec6713 preceive;

Uint32 Com_state;
Uint32 m;
unsigned short DDataBuffer[1280]={0};
/********************************************************************************/
unsigned short SampleRate,SampleLong=500;//采样长度通过SampleLong来修改
#define SAMPLERATE 2                   //可以通过修改SAMPLERATE的值来改采样频率
/*******************************************************************************/
/********************************************************************************/
extern far void vectors();
void DEC6713_AIC23_Config(Uint32 SampleRate);
void AD_sample(unsigned short ADlen,unsigned short *AD_data);
/********************************************************************************/
void main()
{
#if SAMPLERATE==1
    SampleRate =ADSAMPL8K;
#endif
#if SAMPLERATE==2
	SampleRate =ADSAMPL44K;
#endif
#if SAMPLERATE==3
	SampleRate =ADSAMPL96K;
#endif 
    
	/* Initialize CSL. */
	CSL_init();
	/* Initialize DEC6713 board. */
	DEC6713_init();
	//Open McASP
	*p_DECCTL=0x00;	
	//Initialize AIC23
	DEC6713_AIC23_Config(SampleRate);	
	//Open McBASP
	*p_DECCTL=0x40;
	//initiallize McBSP
	McBSP_int();
	//Open interrupt
	interrupt_init();
	inti_Com();
	psend=(PMcbspForDec6713)(&mcbspx[0]);
	AD_sample(SampleLong,&DDataBuffer[0]); 	
	for(m=0;m<2000;m++); 	
    /*通知主机，系统准备好*/
	Com_Datareq(SampleLong,NUM_DATASEND);
	for(;;)
	{	    
   	    Com_state=Com_Staterev(&mcbspr[0]);
	    if(Com_state==2)
	    {
	        
	    }
    	if((Com_state == 0xffff)||(Com_state == 3))
        {
		    //通知主机程序通讯出错,准备重发
		    Com_Checkerr(CHECK_ERR);
		}
		if(Com_state == 0)
		{
		    preceive=(PMcbspForDec6713)(&mcbspr[0]);
			if(preceive->Data[0]==CHECK_ERR)
		        Com_Dataagin(SampleLong);
		}
   	     //数据发送
	    if(preceive->Data[0] == DATA_RECEIVE)
	        Com_Datasend( SampleLong,&DDataBuffer[0]);
	    preceive->Data[0] = 0;
	      	 
     }   
}

/********************************************************************************/
/* no more                                                                      */
/********************************************************************************/