DSP TMS320C5509A之ADC MAX121

MAX121 是一款具有DSP接口的14位串行ADC，最大采样速率308KBPS，驱动程序如下：

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

MCBSP_Handle hADC;

/* */
MCBSP_Config ADC_Mcbsp0 = {
  MCBSP_SPCR1_RMK(
    MCBSP_SPCR1_DLB_OFF,                   
    MCBSP_SPCR1_RJUST_RZF,                
    MCBSP_SPCR1_CLKSTP_NODELAY,		//CLKSTP = 10(no clock delay)           
    MCBSP_SPCR1_DXENA_NA,                 
    MCBSP_SPCR1_ABIS_DISABLE,             
    MCBSP_SPCR1_RINTM_RRDY,               
    0,                                    
    MCBSP_SPCR1_RRST_DISABLE              
   ),
    MCBSP_SPCR2_RMK(
    MCBSP_SPCR2_FREE_NO,                  
    MCBSP_SPCR2_SOFT_NO,                  
    MCBSP_SPCR2_FRST_RESET,               
    MCBSP_SPCR2_GRST_RESET,               
    MCBSP_SPCR2_XINTM_XRDY,               
    0,                                    
    MCBSP_SPCR2_XRST_DISABLE              
   ),
  MCBSP_RCR1_RMK(
  MCBSP_RCR1_RFRLEN1_OF(0),               
  MCBSP_RCR1_RWDLEN1_16BIT                
  ),
 MCBSP_RCR2_RMK(   
    MCBSP_RCR2_RPHASE_SINGLE,             
    MCBSP_RCR2_RFRLEN2_OF(0),             
    MCBSP_RCR2_RWDLEN2_8BIT,              
    MCBSP_RCR2_RCOMPAND_MSB,              
    MCBSP_RCR2_RFIG_YES,                  
    MCBSP_RCR2_RDATDLY_0BIT 		//RDATDLY = 0              
    ), 
   MCBSP_XCR1_RMK(   
    MCBSP_XCR1_XFRLEN1_OF(0),             
    MCBSP_XCR1_XWDLEN1_16BIT              
   
 ),  
 MCBSP_XCR2_RMK(  
    MCBSP_XCR2_XPHASE_SINGLE,             
    MCBSP_XCR2_XFRLEN2_OF(0),             
    MCBSP_XCR2_XWDLEN2_8BIT,              
    MCBSP_XCR2_XCOMPAND_MSB,              
    MCBSP_XCR2_XFIG_YES,                  
    MCBSP_XCR2_XDATDLY_0BIT			//XDATDLY = 0               
  ),           
 MCBSP_SRGR1_RMK(
   MCBSP_SRGR1_FWID_OF(1),               
   MCBSP_SRGR1_CLKGDV_OF(1)   		//CLKGDV = 1           
 ),  
 MCBSP_SRGR2_RMK( 
    MCBSP_SRGR2_GSYNC_FREE,               
    MCBSP_SRGR2_CLKSP_RISING,             
    MCBSP_SRGR2_CLKSM_INTERNAL,		//CLKSM = 1           
    MCBSP_SRGR2_FSGM_DXR2XSR,             
    MCBSP_SRGR2_FPER_OF(15)               
 ), 
 MCBSP_MCR1_DEFAULT,   
 MCBSP_MCR2_DEFAULT,
 MCBSP_PCR_RMK(
   0,								//IDLEEN   = 0
   MCBSP_PCR_XIOEN_SP,                    
   MCBSP_PCR_RIOEN_SP,                    
   MCBSP_PCR_FSXM_EXTERNAL,			//FSXM = 0;               
   MCBSP_PCR_FSRM_EXTERNAL,               
   MCBSP_PCR_CLKXM_INPUT,			//CLKXM = 0                
   MCBSP_PCR_CLKRM_INPUT,                 
   MCBSP_PCR_SCLKME_NO,				//SCLKME = 0                   
   0,                                     
   MCBSP_PCR_FSXP_ACTIVELOW,		//FSXP = 0		The FSX pin is active low.             
   MCBSP_PCR_FSRP_ACTIVEHIGH,             
   MCBSP_PCR_CLKXP_RISING, 			//CLKXP = 0               
   MCBSP_PCR_CLKRP_FALLING			//CLKRP = 0                
 ),
 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
};

interrupt void ADC_DATA_INT(void);



void IniADC(void)
{
//	Uint16 eventId;
	
//	tmp_index = 0;

//	eventId = IRQ_EVT_RINT0;
	//eventId1 = IRQ_EVT_INT1;

	/* Clear any pending McBSP0 rec interrupts */

//	IRQ_clear(eventId);

	//IRQ_clear(eventId1);

	/* Place interrupt service routine address at */

    /* associated vector location */

//    IRQ_plug(eventId,&ADC_DATA_INT);

	//IRQ_plug(eventId1,&ADC_FO_INT);

	

	//初始化DSP的相关寄存器
	hADC=MCBSP_open(MCBSP_PORT0,MCBSP_OPEN_RESET);

	/*设置McBSP1*/
	MCBSP_config(hADC,&ADC_Mcbsp0);

	/* Enable INT5 McBSP rec interrupt */

//    IRQ_enable(eventId); 

	MCBSP_start(hADC, 
                MCBSP_SRGR_START | MCBSP_SRGR_FRAMESYNC,
    			0x300);
	
	MCBSP_start(hADC, 
                MCBSP_RCV_START,//MCBSP_XMIT_START|  
                0);		
}

/*
interrupt void ADC_DATA_INT(void)
{

	if(MCBSP_rrdy(hADC))
	{
		tmpadc[tmp_index++] = MCBSP_read16(hADC);
	}
	if(tmp_index>=1024)
	{
		tmp_index = 0;
	}	
}
*/

头文件如下：

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

#ifndef __DAC_H__
#define __DAC_H__

#define DAC_PORTA	0x00
#define DAC_PORTB	0x01
#define DAC_PORTC	0x02
#define DAC_PORTD	0x03
#define DAC_MAX_OUT	8200


extern void IniADC(void);

extern void IniDAC8164D(void);
  

/* TMS320VC5501/5502/5509/5510 DSP           */
/* Multichannel Buffered Serial Port (McBSP) */
/* Reference Guide                           */
extern void IniAudioDAC(void);

extern void SendToDAC8164(Uint16 DAC_PORTX,Uint16 Value);

extern void SendToIF(Uint32 Value);


/*
 *  FUNCTION: SENDtoAUDIO_DAC
 *
 *  PARAMETERS:
 			Value:输出的电压值
 			Gain:输出的增益系数，Q7
 *
 *  DESCRIPTION:发送数据到DAC，最终发送的数据是
				
 *
 *  RETURNS: 
 *
*/

extern void SENDtoAUDIO_DAC(Uint16 Value);



#endif