evm5509_aic23_read32.c

来自「dsp 5509a MMC 卡 ID号读取 12Mhzx16=192M」· C语言 代码 · 共 30 行

/*
 *  Copyright 2004 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 */

/*
 *  ======== evm5509_aic23_read32.c ========
 *  EVM5509_AIC23_read32() implementation
 */
 
#include <evm5509.h>
#include <evm5509_aic23.h>

/*
 *  ======== EVM5509_AIC23_read32 ========
 *  Read a 32-bit value from the codec
 */
CSLBool EVM5509_AIC23_read32(EVM5509_AIC23_CodecHandle hCodec, Int32 *val)
{    
    /* If McBSP doesn't have new data available, return false */
    if (!MCBSP_rrdy(EVM5509_AIC23_DATAHANDLE)) {
        return (FALSE);
    }

    /* Read the data */
    *val = (Int32)MCBSP_read32(EVM5509_AIC23_DATAHANDLE);
    
    return (TRUE);
}