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?
User | Revision | Line number | New contents of line |
---|---|---|---|
xshige | 0:67cb2f650c15 | 1 | #include "VS1053.h" |
xshige | 0:67cb2f650c15 | 2 | #include "mbed.h" |
xshige | 0:67cb2f650c15 | 3 | |
xshige | 0:67cb2f650c15 | 4 | |
xshige | 0:67cb2f650c15 | 5 | Serial pc(USBTX, USBRX); |
xshige | 0:67cb2f650c15 | 6 | |
xshige | 0:67cb2f650c15 | 7 | /* ================================================================== |
xshige | 0:67cb2f650c15 | 8 | * Constructor |
xshige | 0:67cb2f650c15 | 9 | * =================================================================*/ |
xshige | 0:67cb2f650c15 | 10 | VS1053::VS1053( |
xshige | 0:67cb2f650c15 | 11 | PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst, |
xshige | 0:67cb2f650c15 | 12 | PinName dreq, PinName dcs, PinName vol) |
xshige | 0:67cb2f650c15 | 13 | : |
xshige | 0:67cb2f650c15 | 14 | _spi(mosi, miso, sck), |
xshige | 0:67cb2f650c15 | 15 | _CS(cs), |
xshige | 0:67cb2f650c15 | 16 | _RST(rst), |
xshige | 0:67cb2f650c15 | 17 | _DREQ(dreq), |
xshige | 0:67cb2f650c15 | 18 | _DCS(dcs), |
xshige | 0:67cb2f650c15 | 19 | _VOL(vol) { |
xshige | 0:67cb2f650c15 | 20 | |
xshige | 0:67cb2f650c15 | 21 | } |
xshige | 0:67cb2f650c15 | 22 | |
xshige | 0:67cb2f650c15 | 23 | /*=================================================================== |
xshige | 0:67cb2f650c15 | 24 | * Functions |
xshige | 0:67cb2f650c15 | 25 | *==================================================================*/ |
xshige | 0:67cb2f650c15 | 26 | |
xshige | 0:67cb2f650c15 | 27 | void VS1053::cs_low(void) |
xshige | 0:67cb2f650c15 | 28 | { |
xshige | 0:67cb2f650c15 | 29 | _CS = 0; |
xshige | 0:67cb2f650c15 | 30 | } |
xshige | 0:67cb2f650c15 | 31 | void VS1053::cs_high(void) |
xshige | 0:67cb2f650c15 | 32 | { |
xshige | 0:67cb2f650c15 | 33 | _CS = 1; |
xshige | 0:67cb2f650c15 | 34 | } |
xshige | 0:67cb2f650c15 | 35 | void VS1053::dcs_low(void) |
xshige | 0:67cb2f650c15 | 36 | { |
xshige | 0:67cb2f650c15 | 37 | _DCS = 0; |
xshige | 0:67cb2f650c15 | 38 | } |
xshige | 0:67cb2f650c15 | 39 | void VS1053::dcs_high(void) |
xshige | 0:67cb2f650c15 | 40 | { |
xshige | 0:67cb2f650c15 | 41 | _DCS = 1; |
xshige | 0:67cb2f650c15 | 42 | } |
xshige | 0:67cb2f650c15 | 43 | void VS1053::sci_en(void) //SCI enable |
xshige | 0:67cb2f650c15 | 44 | { |
xshige | 0:67cb2f650c15 | 45 | cs_high(); |
xshige | 0:67cb2f650c15 | 46 | dcs_high(); |
xshige | 0:67cb2f650c15 | 47 | cs_low(); |
xshige | 0:67cb2f650c15 | 48 | } |
xshige | 0:67cb2f650c15 | 49 | void VS1053::sci_dis(void) //SCI disable |
xshige | 0:67cb2f650c15 | 50 | { |
xshige | 0:67cb2f650c15 | 51 | cs_high(); |
xshige | 0:67cb2f650c15 | 52 | } |
xshige | 0:67cb2f650c15 | 53 | void VS1053::sdi_en(void) //SDI enable |
xshige | 0:67cb2f650c15 | 54 | { |
xshige | 0:67cb2f650c15 | 55 | dcs_high(); |
xshige | 0:67cb2f650c15 | 56 | cs_high(); |
xshige | 0:67cb2f650c15 | 57 | dcs_low(); |
xshige | 0:67cb2f650c15 | 58 | } |
xshige | 0:67cb2f650c15 | 59 | void VS1053::sdi_dis(void) //SDI disable |
xshige | 0:67cb2f650c15 | 60 | { |
xshige | 0:67cb2f650c15 | 61 | dcs_high(); |
xshige | 0:67cb2f650c15 | 62 | } |
xshige | 0:67cb2f650c15 | 63 | void VS1053::reset(void) //hardware reset |
xshige | 0:67cb2f650c15 | 64 | { |
xshige | 0:67cb2f650c15 | 65 | wait(0.01); |
xshige | 0:67cb2f650c15 | 66 | _RST = 0; |
xshige | 0:67cb2f650c15 | 67 | wait(0.01); |
xshige | 0:67cb2f650c15 | 68 | _RST = 1; |
xshige | 0:67cb2f650c15 | 69 | wait(0.10); |
xshige | 0:67cb2f650c15 | 70 | } |
xshige | 0:67cb2f650c15 | 71 | void VS1053::power_down(void) //hardware and software reset |
xshige | 0:67cb2f650c15 | 72 | { |
xshige | 0:67cb2f650c15 | 73 | cs_low(); |
xshige | 0:67cb2f650c15 | 74 | reset(); |
xshige | 0:67cb2f650c15 | 75 | // sci_write(0x00, SM_PDOWN); |
xshige | 0:67cb2f650c15 | 76 | sci_write(0x00, 0x10); // tempo |
xshige | 0:67cb2f650c15 | 77 | wait(0.01); |
xshige | 0:67cb2f650c15 | 78 | reset(); |
xshige | 0:67cb2f650c15 | 79 | } |
xshige | 0:67cb2f650c15 | 80 | void VS1053::sci_initialise(void) |
xshige | 0:67cb2f650c15 | 81 | { |
xshige | 0:67cb2f650c15 | 82 | _RST = 1; //no reset |
xshige | 0:67cb2f650c15 | 83 | _spi.format(8,0); //spi 8bit interface, steady state low |
xshige | 0:67cb2f650c15 | 84 | _spi.frequency(1000000); //rising edge data record, freq. 1Mhz |
xshige | 0:67cb2f650c15 | 85 | |
xshige | 0:67cb2f650c15 | 86 | cs_low(); |
xshige | 0:67cb2f650c15 | 87 | for(int i=0; i<4; i++) |
xshige | 0:67cb2f650c15 | 88 | { |
xshige | 0:67cb2f650c15 | 89 | _spi.write(0xFF); //clock the chip a bit |
xshige | 0:67cb2f650c15 | 90 | } |
xshige | 0:67cb2f650c15 | 91 | cs_high(); |
xshige | 0:67cb2f650c15 | 92 | dcs_high(); |
xshige | 0:67cb2f650c15 | 93 | wait_us(5); |
xshige | 0:67cb2f650c15 | 94 | } |
xshige | 0:67cb2f650c15 | 95 | void VS1053::sdi_initialise(void) |
xshige | 0:67cb2f650c15 | 96 | { |
xshige | 0:67cb2f650c15 | 97 | _spi.format(8,0); |
xshige | 0:67cb2f650c15 | 98 | _spi.frequency(7000000); //set to 7MHz |
xshige | 0:67cb2f650c15 | 99 | |
xshige | 0:67cb2f650c15 | 100 | cs_high(); |
xshige | 0:67cb2f650c15 | 101 | dcs_high(); |
xshige | 0:67cb2f650c15 | 102 | } |
xshige | 0:67cb2f650c15 | 103 | void VS1053::sci_write(unsigned char address, unsigned short int data) |
xshige | 0:67cb2f650c15 | 104 | { |
xshige | 0:67cb2f650c15 | 105 | sci_en(); //enables SCI/disables SDI |
xshige | 0:67cb2f650c15 | 106 | |
xshige | 0:67cb2f650c15 | 107 | while(!_DREQ); //wait unitl data request is high |
xshige | 0:67cb2f650c15 | 108 | _spi.write(0x02); //SCI write |
xshige | 0:67cb2f650c15 | 109 | _spi.write(address); //register address |
xshige | 0:67cb2f650c15 | 110 | _spi.write((data >> 8) & 0xFF); //write out first half of data word |
xshige | 0:67cb2f650c15 | 111 | _spi.write(data & 0xFF); //write out second half of data word |
xshige | 0:67cb2f650c15 | 112 | |
xshige | 0:67cb2f650c15 | 113 | sci_dis(); //enables SDI/disables SCI |
xshige | 0:67cb2f650c15 | 114 | wait_us(5); |
xshige | 0:67cb2f650c15 | 115 | } |
xshige | 0:67cb2f650c15 | 116 | void VS1053::sdi_write(unsigned char datum) |
xshige | 0:67cb2f650c15 | 117 | { |
xshige | 0:67cb2f650c15 | 118 | sdi_en(); |
xshige | 0:67cb2f650c15 | 119 | |
xshige | 0:67cb2f650c15 | 120 | while(!_DREQ); |
xshige | 0:67cb2f650c15 | 121 | _spi.write(datum); |
xshige | 0:67cb2f650c15 | 122 | |
xshige | 0:67cb2f650c15 | 123 | sci_dis(); |
xshige | 0:67cb2f650c15 | 124 | } |
xshige | 0:67cb2f650c15 | 125 | unsigned short int VS1053::read(unsigned short int address) |
xshige | 0:67cb2f650c15 | 126 | { |
xshige | 0:67cb2f650c15 | 127 | cs_low(); //enables SCI/disables SDI |
xshige | 0:67cb2f650c15 | 128 | |
xshige | 0:67cb2f650c15 | 129 | while(!_DREQ); //wait unitl data request is high |
xshige | 0:67cb2f650c15 | 130 | _spi.write(0x03); //SCI write |
xshige | 0:67cb2f650c15 | 131 | _spi.write(address); //register address |
xshige | 0:67cb2f650c15 | 132 | unsigned short int received = _spi.write(0x00); //write out dummy byte |
xshige | 0:67cb2f650c15 | 133 | received <<= 8; |
xshige | 0:67cb2f650c15 | 134 | received += _spi.write(0x00); //write out dummy byte |
xshige | 0:67cb2f650c15 | 135 | |
xshige | 0:67cb2f650c15 | 136 | cs_high(); //enables SDI/disables SCI |
xshige | 0:67cb2f650c15 | 137 | |
xshige | 0:67cb2f650c15 | 138 | return received; //return received word |
xshige | 0:67cb2f650c15 | 139 | } |
xshige | 0:67cb2f650c15 | 140 | void VS1053::sine_test_activate(unsigned char wave) |
xshige | 0:67cb2f650c15 | 141 | { |
xshige | 0:67cb2f650c15 | 142 | cs_high(); //enables SDI/disables SCI |
xshige | 0:67cb2f650c15 | 143 | |
xshige | 0:67cb2f650c15 | 144 | while(!_DREQ); //wait unitl data request is high |
xshige | 0:67cb2f650c15 | 145 | _spi.write(0x53); //SDI write |
xshige | 0:67cb2f650c15 | 146 | _spi.write(0xEF); //SDI write |
xshige | 0:67cb2f650c15 | 147 | _spi.write(0x6E); //SDI write |
xshige | 0:67cb2f650c15 | 148 | _spi.write(wave); //SDI write |
xshige | 0:67cb2f650c15 | 149 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 150 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 151 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 152 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 153 | |
xshige | 0:67cb2f650c15 | 154 | cs_low(); //enables SCI/disables SDI |
xshige | 0:67cb2f650c15 | 155 | } |
xshige | 0:67cb2f650c15 | 156 | void VS1053::sine_test_deactivate(void) |
xshige | 0:67cb2f650c15 | 157 | { |
xshige | 0:67cb2f650c15 | 158 | cs_high(); |
xshige | 0:67cb2f650c15 | 159 | |
xshige | 0:67cb2f650c15 | 160 | while(!_DREQ); |
xshige | 0:67cb2f650c15 | 161 | _spi.write(0x45); //SDI write |
xshige | 0:67cb2f650c15 | 162 | _spi.write(0x78); //SDI write |
xshige | 0:67cb2f650c15 | 163 | _spi.write(0x69); //SDI write |
xshige | 0:67cb2f650c15 | 164 | _spi.write(0x74); //SDI write |
xshige | 0:67cb2f650c15 | 165 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 166 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 167 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 168 | _spi.write(0x00); //filler byte |
xshige | 0:67cb2f650c15 | 169 | } |
xshige | 0:67cb2f650c15 | 170 | void VS1053::volume(void) |
xshige | 0:67cb2f650c15 | 171 | { |
xshige | 0:67cb2f650c15 | 172 | #ifdef FIXED_VOL |
xshige | 0:67cb2f650c15 | 173 | unsigned char volumize = (0 * 255); // FIXED VOL (not support volume input) |
xshige | 0:67cb2f650c15 | 174 | #else |
xshige | 0:67cb2f650c15 | 175 | unsigned char volumize = (_VOL * 255); |
xshige | 0:67cb2f650c15 | 176 | #endif |
xshige | 0:67cb2f650c15 | 177 | while(!_DREQ); |
xshige | 0:67cb2f650c15 | 178 | |
xshige | 0:67cb2f650c15 | 179 | unsigned short int attenuation = ((256 * volumize) + volumize); |
xshige | 0:67cb2f650c15 | 180 | sci_write(0x0B, attenuation); |
xshige | 0:67cb2f650c15 | 181 | } |
xshige | 0:67cb2f650c15 | 182 | |
xshige | 0:67cb2f650c15 | 183 | void VS1053::writeStream(unsigned char *array, int size) |
xshige | 0:67cb2f650c15 | 184 | { |
xshige | 0:67cb2f650c15 | 185 | for(int i=0; i<size; i++) |
xshige | 0:67cb2f650c15 | 186 | { |
xshige | 0:67cb2f650c15 | 187 | sdi_write(array[i]); |
xshige | 0:67cb2f650c15 | 188 | } |
xshige | 0:67cb2f650c15 | 189 | volume(); |
xshige | 0:67cb2f650c15 | 190 | } |
xshige | 0:67cb2f650c15 | 191 | |
xshige | 0:67cb2f650c15 | 192 | #if 0 |
xshige | 0:67cb2f650c15 | 193 | // this function does not work |
xshige | 0:67cb2f650c15 | 194 | // because of function call overhead |
xshige | 0:67cb2f650c15 | 195 | void VS1053::putcStream(unsigned char datum) |
xshige | 0:67cb2f650c15 | 196 | { |
xshige | 0:67cb2f650c15 | 197 | sdi_write(datum); |
xshige | 0:67cb2f650c15 | 198 | } |
xshige | 0:67cb2f650c15 | 199 | #endif |
xshige | 0:67cb2f650c15 | 200 | |
xshige | 0:67cb2f650c15 | 201 | void VS1053::terminateStream(void) |
xshige | 0:67cb2f650c15 | 202 | { |
xshige | 0:67cb2f650c15 | 203 | for(int n=0; n<2048; n++) |
xshige | 0:67cb2f650c15 | 204 | { |
xshige | 0:67cb2f650c15 | 205 | sdi_write(0x00); |
xshige | 0:67cb2f650c15 | 206 | } |
xshige | 0:67cb2f650c15 | 207 | |
xshige | 0:67cb2f650c15 | 208 | } |