ad_main.c

数字信号处理中的多缓冲口的AD转换编程程序,希望对大家有用

/******************************************************************************/
/*  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... IIC and Mcbsp											  */
/*  FILENAME...... DEC5502_MCBSP.c   										  */
/*  DESCRIPTION:  															  */
/*  This is an fuction that can sample the signal and display the sampled     */
/*  signal on the LCD	                                                      */
/*  This example is that the CODEC is controled by the IIC and Mcbsp 		  */
/*                                                                            */
/*  作者:黄林生                                                               */
/*  版本:1.0                                                                  */
/*  日期:06.10.20                                                             */
/******************************************************************************/
#include <csl.h>
#include <csl_chip.h>
#include <csl_i2c.h>
#include <csl_irq.h>
#include <csl_gpt.h>
#include <csl_pll.h>
#include <csl_mcbsp.h>
#include <csl_emif.h>
#include <csl_emifBhal.h>
#include <csl_std.h>
#include "check.h"
#include "type.h"
#include "protocol.h"
#include "DEC5502_MCBSP_inti.h"
#include "DEC5502_MCBSP_work.h"
#include "i_cmplx.h"
#include "math.h"
#include "E2PROM_Function.h"
#include "CODEC.h"
#undef  CODEC_ADDR
#define CODEC_ADDR 0x1A
#define ADSAMPL8K  0x03
#define ADSAMPL44K 0x0
#define ADSAMPL96K 0x07

unsigned int sendcount;
short DataBuffer[1024];
int Com_state,j;
PmcbspForDec5502 preceive; 	
Uint16 SampleRate;
/***********************************************************************/
unsigned int SampleLong=500;
#define SAMPLERATE 2
/***********************************************************************/
extern void VECSTART();		
/*----------------------------------------------------------------------*/
//  MAIN FUNCTION
/*----------------------------------------------------------------------*/                 
void main(void)
{    
#if SAMPLERATE==1
    SampleRate =ADSAMPL8K;
#endif
#if SAMPLERATE==2
	SampleRate =ADSAMPL44K;
#endif
#if SAMPLERATE==3
	SampleRate =ADSAMPL96K;
#endif   
// Initialize CSL library - This is REQUIRED !!! 
    CSL_init();	
// Set IVPH/IVPD to start of interrupt vector table */
	IRQ_setVecs((Uint32)(&VECSTART)<<1);			
// The main frequency of system is 240MHz
// 该频率是为了设置IIC模块的需要设置的,为了使用I2C_setup函数
    PLL_setFreq(1, 0xC, 0, 1, 3, 3, 0);  
// Initialize I2C, Using parameters in I2C_Setup structure
	I2c_Setup();
// Config McBSP	port 1 by use previously defined structure
	Mcbsp1_Config();
// 设置AIC23各部分均工作
	inti_AIC(SampleRate); 
//通讯初始化
    inti_Com();  
    Com_open(); 
//采样数据  
    AD_sample(SampleLong,&DataBuffer[0]);
//要求进行数据发送
    Com_Datareq(SampleLong,NUM_DATASEND);
	for(;;)
	{
   	    Com_state=Com_Staterev(&mcbspr[0]);
	    if(Com_state==2)
	    {
	        IRQ_clear(IRQ_EVT_RINT2);
	        IRQ_plug(IRQ_EVT_RINT2, &McbspRevIsr);
	        IRQ_enable(IRQ_EVT_RINT2);
	        continue;
	    }
    	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=(PmcbspForDec5502)(&mcbspr[0]);
			if(preceive->Data[0]==CHECK_ERR)
		        Com_Dataagin(SampleLong);
		}
   	     //数据发送
	    if(preceive->Data[0] == DATA_RECEIVE)
	        Com_Datasend( SampleLong,&DataBuffer[0]);
	     preceive->Data[0] = 0;
	      	 
     }
    
}
/**********************************************************************/