Shigeki KOMATSU / Mbed 2 deprecated mbeduino_MP3_Shield_MP3Player

mbeduino MP3 Sheild player MP3 player that runs on mebeduin with MP3 Shield. Regarding mbeduino, refer to: http://mbed.org/users/okini3939/notebook/mbeduino/ Regarding MP3 Shiled, refer to: http://www.sparkfun.com/commerce/product_info.php?products_id=9736

Dependencies:   mbed SDFileSystem

VS1053.cpp@0:67cb2f650c15, 2010-10-12 (annotated)

Committer:
xshige
Date:
Tue Oct 12 14:11:52 2010 +0000
Revision:
0:67cb2f650c15
Child:
1:c47269f0e9e1

        

        
Who changed what in which revision?

        

            
                
UserRevisionLine numberNew contents of line

            
            


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#include "VS1053.h"





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#include "mbed.h"





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Serial pc(USBTX, USBRX);





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/* ==================================================================





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 * Constructor





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 * =================================================================*/





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VS1053::VS1053(





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         PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst,





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         PinName dreq, PinName dcs, PinName vol)





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    :





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     _spi(mosi, miso, sck), 





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     _CS(cs), 





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     _RST(rst), 





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     _DREQ(dreq),





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     _DCS(dcs), 





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     _VOL(vol) {





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    }    





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/*===================================================================





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 * Functions





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 *==================================================================*/





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void VS1053::cs_low(void)





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{





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    _CS = 0;                                





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}





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void VS1053::cs_high(void)





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{





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    _CS = 1;                                





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}





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void VS1053::dcs_low(void)





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{





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    _DCS = 0;





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}





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void VS1053::dcs_high(void)





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{





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    _DCS = 1;





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}





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void VS1053::sci_en(void)                    //SCI enable





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{





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    cs_high();





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    dcs_high();





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    cs_low();





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}





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void VS1053::sci_dis(void)                    //SCI disable





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{





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    cs_high();





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}





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void VS1053::sdi_en(void)                    //SDI enable





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{





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    dcs_high();





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    cs_high();





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    dcs_low();





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}





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void VS1053::sdi_dis(void)                    //SDI disable





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{





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    dcs_high();





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}





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void VS1053::reset(void)                    //hardware reset





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{





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    wait(0.01);





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    _RST = 0;





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    wait(0.01);





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    _RST = 1;





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    wait(0.10);





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}





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void VS1053::power_down(void)                //hardware and software reset





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{





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    cs_low();





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    reset();





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//    sci_write(0x00, SM_PDOWN);





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    sci_write(0x00, 0x10); // tempo





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    wait(0.01);





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    reset();





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}





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void VS1053::sci_initialise(void)





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{





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    _RST = 1;                                //no reset





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    _spi.format(8,0);                        //spi 8bit interface, steady state low





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    _spi.frequency(1000000);                //rising edge data record, freq. 1Mhz





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    cs_low();





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    for(int i=0; i<4; i++)





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    {





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    _spi.write(0xFF);                        //clock the chip a bit





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    }





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    cs_high();





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    dcs_high();





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    wait_us(5);





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}





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void VS1053::sdi_initialise(void)





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{





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    _spi.format(8,0);





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    _spi.frequency(7000000);                //set to 7MHz





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    cs_high();





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    dcs_high();





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}





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void VS1053::sci_write(unsigned char address, unsigned short int data)





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{





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    sci_en();                                //enables SCI/disables SDI





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    while(!_DREQ);                            //wait unitl data request is high





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    _spi.write(0x02);                        //SCI write





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    _spi.write(address);                    //register address





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    _spi.write((data >> 8) & 0xFF);            //write out first half of data word





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    _spi.write(data & 0xFF);                //write out second half of data word





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    sci_dis();                                //enables SDI/disables SCI





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    wait_us(5);





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}





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void VS1053::sdi_write(unsigned char datum)





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{





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    sdi_en();





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    while(!_DREQ);





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    _spi.write(datum);





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    sci_dis();





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}





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unsigned short int VS1053::read(unsigned short int address)





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{





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    cs_low();                                //enables SCI/disables SDI





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    while(!_DREQ);                            //wait unitl data request is high





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    _spi.write(0x03);                        //SCI write





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    _spi.write(address);                    //register address





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    unsigned short int received = _spi.write(0x00);    //write out dummy byte





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    received <<= 8;





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    received += _spi.write(0x00);            //write out dummy byte





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    cs_high();                                //enables SDI/disables SCI





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    return received;                        //return received word





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}





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void VS1053::sine_test_activate(unsigned char wave)





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{





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    cs_high();                                //enables SDI/disables SCI





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    while(!_DREQ);                            //wait unitl data request is high





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    _spi.write(0x53);                        //SDI write





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    _spi.write(0xEF);                        //SDI write





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    _spi.write(0x6E);                        //SDI write





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    _spi.write(wave);                        //SDI write





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    _spi.write(0x00);                        //filler byte





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    _spi.write(0x00);                        //filler byte





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    _spi.write(0x00);                        //filler byte





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    _spi.write(0x00);                        //filler byte





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    cs_low();                                //enables SCI/disables SDI





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}





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void VS1053::sine_test_deactivate(void)





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{





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    cs_high();





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    while(!_DREQ);





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    _spi.write(0x45);                        //SDI write





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    _spi.write(0x78);                        //SDI write





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    _spi.write(0x69);                        //SDI write





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    _spi.write(0x74);                        //SDI write





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    _spi.write(0x00);                        //filler byte





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    _spi.write(0x00);                        //filler byte





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    _spi.write(0x00);                        //filler byte





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    _spi.write(0x00);                        //filler byte





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}





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void VS1053::volume(void)





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{





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 #ifdef FIXED_VOL





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    unsigned char volumize = (0 * 255); // FIXED VOL (not support volume input)





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 #else





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    unsigned char volumize = (_VOL * 255);





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 #endif





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    while(!_DREQ);





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    unsigned short int attenuation = ((256 * volumize) + volumize);





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    sci_write(0x0B, attenuation);





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}





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void VS1053::writeStream(unsigned char *array, int size)





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{





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   for(int i=0; i<size; i++)





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   {





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       sdi_write(array[i]);





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   }





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   volume();





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}





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#if 0





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// this function does not work





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// because of function call overhead





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void VS1053::putcStream(unsigned char datum)





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{





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    sdi_write(datum);





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}





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#endif





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void VS1053::terminateStream(void)





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{





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    for(int n=0; n<2048; n++)





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       {





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           sdi_write(0x00);





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       }





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}