sinsus2103

/*****************************************************************************/
/*                                                                           */
/* PROJECT                                                                   */
/*   Sinewaves                                                               */
/*                                                                           */
/* FILENAME                                                                  */
/*   main.c                                                                  */
/*                                                                           */
/* DESCRIPTION                                                               */
/*   TMS320C5505 USB Stick Application 4. Generating sine waves.             */
/*   Generating sinewaves of variable frequency using DSPLIB.                */
/*                                                                           */
/* REVISION                                                                  */
/*   Revision: 1.00                                                          */
/*   Author  : Richard Sikora                                                */
/*---------------------------------------------------------------------------*/
/*                                                                           */
/* HISTORY                                                                   */
/*                                                                           */
/*   Revision 1.00                                                           */
/*   1st March 2010. Original template code Spectrum Digital.                */
/*                                                                           */
/*   Revision 1.01                                                           */
/*   5th August 2010. Converted to use CSL.                                  */
/*                                                                           */
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/*
 * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/
 *
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *
 *    Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 *    Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 *    Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
*/

#include "stdio.h"
#include "usbstk5505.h"
#include "aic3204.h"
#include "PLL.h"
#include "sinewaves.h"


Int16 left_input;
Int16 right_input;
Int16 left_output;
Int16 right_output;

Int16 left[512];
Int16 right[512];
Int16 idx = 0;


#define SAMPLES_PER_SECOND 24000
#define GAIN_IN_dB         0

unsigned long int i = 0;


/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  main( )                                                                 *
 *                                                                          *
 * ------------------------------------------------------------------------ */
void main( void )
{
    /* Initialize BSL */
    USBSTK5505_init( );

    /* Initialize the Phase Locked Loop in EEPROM */
    pll_frequency_setup(100);

    /* Initialise hardware interface and I2C for code */
    aic3204_hardware_init();

    /* Initialise the AIC3204 codec */
    aic3204_init();


    /* Set sampling frequency in Hz and ADC gain in dB */
    set_sampling_frequency_and_gain(SAMPLES_PER_SECOND, GAIN_IN_dB);

    printf("\nRunning Sinewaves Project\n\n");
    printf( "Sinewave 250Hz on left HP output, 1000Hz on right HP output\n\n" );

    asm(" bclr XF");

    for ( i = 0  ; i < SAMPLES_PER_SECOND * 600L  ;i++  )
    {

     aic3204_codec_read(&left_input, &right_input); // Configured for one interrupt per two channels.

     left_output = 4 * generate_sinewave_1(500, 10000);   // Sinewave 1 is 250 Hz.
     right_output = generate_sinewave_2(523, 10000); // Sinewave 2 is 1000 Hz.

     aic3204_codec_write(left_output, right_output);

     left[idx] = left_output;
     right[idx] = right_output;
     idx+=1;
     if(idx == 512)
         idx = 0;

    }

   /* Disable I2S and put codec into reset */
    aic3204_disable();

    printf( "\n***Program has Terminated***\n" );
    SW_BREAKPOINT;
}

/* ------------------------------------------------------------------------ *
 *                                                                          *
 *  End of main.c                                                           *
 *                                                                          *
 * ------------------------------------------------------------------------ */