ad50.h

一个ccs开发环境下的滤波器程序

/*
 *  Copyright 2002 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */
/* "@(#) ReferenceFrameworks 1.00.00 03-08-02 (swat-b12)" */
/* 
 *  ======== ad50.h ========
 */

#ifndef AD50_
#define AD50_

#include <std.h>

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

/*
 *  Codec registers are kept in an object having the structure below.
 */
typedef struct AD50_Params {
    Uns control1;
    Uns control2;
    Uns control3;
    Uns control4;
} AD50_Params;

#define AD50_DEFAULTPARAMS {                                                 \
    0x80,      /* Register 1 (CR1) -- software reset */                      \
    0x00,      /* Register 2 (CR2) --                */                      \
    0x00,      /* Register 3 (CR3) -- Ph. mode Dis./15 bit ADC/No Anal LB*/  \
    0x90       /* Register 4 (CR4) - Gain 0dB, Bypass PLL, fs = 16kHz */      \
               /* MCLK is 8.192MHz for DSK5402 */                            \
               /* Use 0x90 for 16kHz, 0xa0 for 8kHz */                       \
               /* 8.192MHz / (512 * 2) = 8kHz */                             \
}

/*
 *  ======== AD50_init ========
 */
extern Void AD50_init();

/*
 *  ======== AD50_setParams ========
 *
 *  This function takes a pointer to the object of type AD50_Params,
 *  and writes all 4 control words found in it to the codec.
 */
extern Void AD50_setParams( MCBSP_Handle hMcbsp, AD50_Params *params );

#endif /* AD50_ */