aic23.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... Mcbsp											          */
/*  FILENAME...... comunication.c   										  */
/*  DESCRIPTION:  															  */
/*  This is an fuction which is just for comunication                             */	
/*                                                                            */
/*  作者:黄林生                                                               */
/*  版本:1.0                                                                  */
/*  日期:06.10.24                                                             */
/******************************************************************************/

#include <csl.h>
#include <csl_mcbsp.h>
#include "CODEC.h"

//short DataBuffer[1024]={0};
#undef  CODEC_ADDR
#define CODEC_ADDR 0x1A


/*------------------------------------------------------------------------------------*/
//
// Config CODEC control registers
//
/*------------------------------------------------------------------------------------*/

	// 数字音频接口格式设置
	// AIC23为主模式,数据为DSP模式,数据长度16位   
 Uint16 Digital_Audio_Inteface_Format[2]={
 	Codec_DAIF_REV,
 	DAIF_MS(1)+DAIF_LRSWAP(0)+DAIF_LRP(1)+DAIF_IWL(0)+DAIF_FOR(3)};

	// AIC23的波特率设置,采样率为48k,CLKIN=CLKOUT=MCLK=???12.288MHz
	// 时钟模式设为普通模式,基过采样率为250Fs???256fs
 Uint16 Sample_Rate_Control[2] = {
 	Codec_SRC_REV,
 	SRC_CLKIN(0)+SRC_CLKOUT(0)+SRC_SR(0)+SRC_BOSR(0)+SRC_USB(0)};

	// AIC23寄存器复位
 Uint16 Reset[2] ={
 	Codec_RST_REV,
 	RST_RES};

	// AIC23节电方式设置，所有部分均处于工作状态
 Uint16 Power_Down_Control[2] ={
 	Codec_PDC_REV,
 	PDC_DEFAULT};

	// AIC23模拟音频的控制:关掉侧音
	// DAC使能,ADC输入选择为音频输入
	//将AAPC_INSEL(x)设为0，选择Line输入,注意实验跳线的选择
	//将AAPC_INSEL(x)设为1，选择Microphone输入,注意实验跳线的选择
 Uint16 Analog_Aduio_Path_Control[2] = {
  	Codec_AAPC_STA2(0),
  	AAPC_STA10(0)+AAPC_STE(0)+AAPC_DAC(1)+AAPC_BYP(0)+AAPC_INSEL(0)+AAPC_MICM(0)+AAPC_MICB(0)};

	// AIC23数字音频通路的控制
	// 使能ADC高通滤波
 Uint16 Digital_Audio_Path_Control[2] ={
  	Codec_DAPC_REV,
  	DAPC_DACM(0)+DAPC_DEEMP(0)+DAPC_ADCHP(1)};

	// AIC23数字接口的使能
 Uint16 Digital_Interface_Activation[2] ={
 	Codec_DIA_REV,
 	DIA_ACT(1)};

	// AIC23左通路音频调节	
 Uint16 Left_Line_Input_Volume_Control[2] ={
  	Codec_LLIVC_LPS(1),
  	LLIVC_LIM(0)+LLIVC_LIV(23)};

	// AIC23右通路音频调节
 Uint16 Right_Line_Input_Volume_Control[2] = {
 	Codec_RLIVC_RLS(1),
 	RLIVC_RIM(0)+RLIVC_RIV(23)};

	// AIC23耳机左通路音频调节
 Uint16 Left_Headphone_Volume_Control[2] = {
 	Codec_LHPVC_LRS(1),
 	LHPVC_LZC(1)+LHPVC_LHV(127)};

	// AIC23耳机右通路音频调节
 Uint16 Right_Headphone_Volume_Control[2] = {
 	Codec_RHPVC_RLS(1),
 	LHPVC_RZC(1)+LHPVC_RHV(127)};
 	
 	

void inti_AIC(unsigned int sample)
{   
// Open McBSP port 1 and get a McBSP type handle
    /*设置AIC23各部分均工作*/
    MyI2C_Write( Power_Down_Control,//pointer to data array
	   	       2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );  
          
	/*设置AIC23的数字接口*/
	MyI2C_Write( Digital_Audio_Inteface_Format,//pointer to data array
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );

	 /*设置AIC23模拟通路*/
	MyI2C_Write( Analog_Aduio_Path_Control,//pointer to data array
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );

	/*设置数字通路*/
	MyI2C_Write( Digital_Audio_Path_Control,//pointer to data array
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );    
		 
	/*设置AIC23的采样率*/
	MyI2C_WriteAD( Sample_Rate_Control,//pointer to data array
	    	   sample,
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );

	/*设置耳机音量*/
	MyI2C_Write( Left_Headphone_Volume_Control,//pointer to data array
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );

	/*设置Line输入的音量*/
	MyI2C_Write( Left_Line_Input_Volume_Control,//pointer to data array
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );

	/*启动AIC23*/
	MyI2C_Write( Digital_Interface_Activation,//pointer to data array
	    	   2,				//length of data to be transmitted
	    	   1,				//master or slaver
	    	   CODEC_ADDR,	    //slave address to transmit to
	    	   1,				//transfer mode of operation
	    	   30000			//time out for bus busy
	    	   );
}