ad_inti.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 <stdio.h>
#include <csl.h>
#include <csl_pll.h>
#include <csl_chip.h>
#include <csl_irq.h>
#include <csl_emif.h>
#include <csl_gpt.h>
#include <csl_emifBhal.h>
#include <csl_mcbsp.h>
#include "emif.h"
#include "mcbsp.h"
#include "type.h"
#include "protocol.h"
#include "DEC5502_MCBSP_inti.h"
#include "DEC5502_MCBSP_work.h"
#include "check.h"
#define  SYSCNTL0 	(*(volatile unsigned int *)(0x280000))
MCBSP_Handle hMcbsp1;
unsigned int adnum;
short TemDataR,TemDataL;
/*------------------------------------------------------------------------------------*/
//
// Config McBSP:  Use McBSP to send and receive the data between DSP and AIC23B
//
/*------------------------------------------------------------------------------------*/
MCBSP_Config Mcbsp1Config = {
  MCBSP_SPCR1_RMK(    
    MCBSP_SPCR1_DLB_OFF,  		 	// DLB    = 0 
    MCBSP_SPCR1_RJUST_LZF,          // RJUST  = 0,right justify the data and zero fill the MSBs
    MCBSP_SPCR1_CLKSTP_DISABLE,     // CLKSTP = 0 
    MCBSP_SPCR1_DXENA_ON,           // DXENA  = 1,DX delay enabler on 
    0,             				   	// Reserved   = 0 
    MCBSP_SPCR1_RINTM_RRDY,         // RINTM  = 0 
    MCBSP_SPCR1_RSYNCERR_NO,        // RSYNCER = 0 
    MCBSP_SPCR1_RFULL_NO,           // RFULL = 0  
    MCBSP_SPCR1_RRDY_NO,            // RRDY = 0  
    MCBSP_SPCR1_RRST_DISABLE 		// RRST   = 0; Disable receiver 
   ),
  MCBSP_SPCR2_RMK(  
    MCBSP_SPCR2_FREE_NO,            // FREE   = 0 
    MCBSP_SPCR2_SOFT_NO,            // SOFT   = 0 
    MCBSP_SPCR2_FRST_FSG,         	// FRST   = 1 ; Enable the frame-sync logic
    MCBSP_SPCR2_GRST_CLKG,         	// GRST   = 1 ; The sample rate generator is take out of its reset state 
    MCBSP_SPCR2_XINTM_XRDY,         // XINTM  = 0 
    MCBSP_SPCR2_XSYNCERR_NO,        // XSYNCER =0 
    MCBSP_SPCR2_XEMPTY_NO,          // XEMPTY = 0 
    MCBSP_SPCR2_XRDY_NO,            // XRDY   = 0             
    MCBSP_SPCR2_XRST_DISABLE 	    // XRST   = 0 Disable transimitter 
   ),
   // 单数据相，接受数据长度为16位,每相1个数据
  MCBSP_RCR1_RMK( 
  	MCBSP_RCR1_RFRLEN1_OF(1),       // RFRLEN1 = 1 
  	MCBSP_RCR1_RWDLEN1_16BIT        // RWDLEN1 = 2 
  ),
  MCBSP_RCR2_RMK(    
    MCBSP_RCR2_RPHASE_SINGLE,       // RPHASE  = 0 
    MCBSP_RCR2_RFRLEN2_OF(0),       // RFRLEN2 = 0 
    MCBSP_RCR2_RWDLEN2_8BIT,       	// RWDLEN2 = 0 
    MCBSP_RCR2_RCOMPAND_MSB,        // RCOMPAND = 0 No companding,any size data, MSB received first 
    MCBSP_RCR2_RFIG_YES,  		    // RFIG    = 1 Frame-sync ignore 
    MCBSP_RCR2_RDATDLY_1BIT  		// RDATDLY = 1 1-bit data delay 
    ),  
  MCBSP_XCR1_RMK(    
    MCBSP_XCR1_XFRLEN1_OF(0),       // XFRLEN1 = 1  
    MCBSP_XCR1_XWDLEN1_16BIT        // XWDLEN1 = 2   
 ),   
 MCBSP_XCR2_RMK(   
    MCBSP_XCR2_XPHASE_SINGLE,       // XPHASE  = 0 
    MCBSP_XCR2_XFRLEN2_OF(0),       // XFRLEN2 = 0 
    MCBSP_XCR2_XWDLEN2_8BIT,       	// XWDLEN2 = 0 
    MCBSP_XCR2_XCOMPAND_MSB,        // XCOMPAND = 0 
    MCBSP_XCR2_XFIG_YES,            // XFIG    = 1 Unexpected Frame-sync ignore 
    MCBSP_XCR2_XDATDLY_1BIT         // XDATDLY = 1 1-bit data delay 
  ),            
 MCBSP_SRGR1_DEFAULT,
 MCBSP_SRGR2_DEFAULT,				 
 MCBSP_MCR1_DEFAULT,
 MCBSP_MCR2_DEFAULT, 
 MCBSP_PCR_RMK(
   MCBSP_PCR_IDLEEN_RESET,          // IDLEEN   = 0   
   MCBSP_PCR_XIOEN_SP,              // XIOEN    = 0   
   MCBSP_PCR_RIOEN_SP,              // RIOEN    = 0   
   MCBSP_PCR_FSXM_EXTERNAL,  		// FSXM     = 0 Tranmit frame-syn is provided by AIC23B 
   MCBSP_PCR_FSRM_EXTERNAL,         // FSRM     = 0 Receive frame-syn is provided by AIC23B 
   MCBSP_PCR_CLKXM_INPUT,   		// CLKR is input 
   MCBSP_PCR_CLKRM_INPUT,           // CLKX is input 
   MCBSP_PCR_SCLKME_NO,             // SCLKME=0 CLKG is taken from the McBSP internal input clock  
   MCBSP_PCR_CLKSSTAT_0,            // The signal on the CLKS pin is low   
   MCBSP_PCR_DXSTAT_0,              // Drive the signal on the DX pin low   
   MCBSP_PCR_DRSTAT_0,              // The signal on the DR pin is low   
   MCBSP_PCR_FSXP_ACTIVEHIGH,  		// FSXP     = 1 Because a falling edge on LRCIN or LRCOUT starts data transfer  
   MCBSP_PCR_FSRP_ACTIVELOW,        // FSRP     = 1   
   MCBSP_PCR_CLKXP_FALLING,         // CLKXP    = 1   The falling edge of BCLK starts data transfer 
   MCBSP_PCR_CLKRP_RISING           // CLKRP    = 1   
 ),
 MCBSP_RCERA_DEFAULT, 
 MCBSP_RCERB_DEFAULT, 
 MCBSP_RCERC_DEFAULT, 
 MCBSP_RCERD_DEFAULT, 
 MCBSP_RCERE_DEFAULT, 
 MCBSP_RCERF_DEFAULT, 
 MCBSP_RCERG_DEFAULT, 
 MCBSP_RCERH_DEFAULT, 
 MCBSP_XCERA_DEFAULT,
 MCBSP_XCERB_DEFAULT,
 MCBSP_XCERC_DEFAULT,
 MCBSP_XCERD_DEFAULT,  
 MCBSP_XCERE_DEFAULT,
 MCBSP_XCERF_DEFAULT,  
 MCBSP_XCERG_DEFAULT,
 MCBSP_XCERH_DEFAULT
 };
 

/********************************************************************************/
/*	Functionname:	void Emif_Config(void)										*/
/*	Function:		Realize emif configuration									*/
/********************************************************************************/
extern void Mcbsp1_Config()
{

// Open McBSP port 1 and get a McBSP type handle
	hMcbsp1 = MCBSP_open(MCBSP_PORT1,MCBSP_OPEN_RESET);
    MCBSP_reset(hMcbsp1);
// Config McBSP	port 1 by use previously defined structure
	MCBSP_config(hMcbsp1,&Mcbsp1Config);
// Start McBSP1 
	MCBSP_start(hMcbsp1, 
                MCBSP_RCV_START | MCBSP_XMIT_START, 
                0);
     CHIP_RSET(XBSR,0x0005);//necessary 
}

/********************************************************************************/
AD_sample( unsigned int ADlen,unsigned int* pnum)
{
    /*采样*/
	for(adnum = 0;adnum<(ADlen+520);adnum++)
	{
	    while(!MCBSP_rrdy(hMcbsp1)){};
	         TemDataL = MCBSP_read16(hMcbsp1);
	    while(!MCBSP_rrdy(hMcbsp1)){};
	         TemDataR = MCBSP_read16(hMcbsp1);
	   	if(adnum>=520)
   		      *pnum++=TemDataR;
	}
}