davincievm_aic33_read32.c

来自「TI的DM6446的硬件平台搭建的相关例子」· C语言 代码 · 共 42 行

/*
 *  Copyright 2005 by Spectrum Digital Incorporated.
 *  All rights reserved. Property of Spectrum Digital Incorporated.
 *
 *  Not for distribution.
 */

/*
 *  AIC33 implementation
 *
 */

#include "davincievm_aic33.h"

/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  DAVINCIEVM_AIC33_read32( aic33handle, value )                           *
 *                                                                          *
 *      Read a 32-bit value from the codec                                  *
 *                                                                          *
 * ------------------------------------------------------------------------ */
Int16 DAVINCIEVM_AIC33_read32( AIC33_CodecHandle aic33handle, Int32 *value )
{
    #ifdef ARM_SIDE

        if ( ( MCBSP_SPCR & MCBSP_SPCR_RRDY ) == 0 )    // Check for Rx ready
            return 0;

        CSL_mcbspRead( mcbsp_handle, CSL_MCBSP_WORDLEN_32, value );
        return 1;

    #elif DSP_SIDE

        if ( ( MCBSP_SPCR & MCBSP_SPCR_RRDY ) == 0 )    // Check for Rx ready
            return 0;

        *value = MCBSP_DRR_32BIT;                       // Read 32-bits
        return 1;

    #endif
}