Matthew Petersen / Mbed 2 deprecated Arduino_MP3_Shield_MP3Player_UI

Arduino MP3 Shield MP3Player This program comes from http://mbed.org/cookbook/VS1002-MP3-Decoder (Very small modification done to fit latest libs) **Additional small mods to xshige\'s code by mpetersen3 and kbuck3 to add a user interface

Dependencies:   mbed

VS1002.cpp@0:9cb0b3d1b9e6, 2010-10-12 (annotated)

Committer:
mpetersen3
Date:
Tue Oct 12 21:25:35 2010 +0000
Revision:
0:9cb0b3d1b9e6
This revision adds a user interface for the mp3 player

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mpetersen3 0:9cb0b3d1b9e6 1 #include "VS1002.h"
mpetersen3 0:9cb0b3d1b9e6 2 #include "mbed.h"
mpetersen3 0:9cb0b3d1b9e6 3 #include "TextLCD.h"
mpetersen3 0:9cb0b3d1b9e6 4 AnalogIn rotary1(p19);
mpetersen3 0:9cb0b3d1b9e6 5 DigitalIn pause1(p28);
mpetersen3 0:9cb0b3d1b9e6 6 TextLCD lcd(p10, p18, p24, p23, p22, p21, TextLCD::LCD16x2 ); // rs, e, d0-d3
mpetersen3 0:9cb0b3d1b9e6 7
mpetersen3 0:9cb0b3d1b9e6 8
mpetersen3 0:9cb0b3d1b9e6 9 /* ==================================================================
mpetersen3 0:9cb0b3d1b9e6 10 * Constructor
mpetersen3 0:9cb0b3d1b9e6 11 * =================================================================*/
mpetersen3 0:9cb0b3d1b9e6 12 VS1002::VS1002(
mpetersen3 0:9cb0b3d1b9e6 13 PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name,
mpetersen3 0:9cb0b3d1b9e6 14 PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst,
mpetersen3 0:9cb0b3d1b9e6 15 PinName dreq, PinName dcs, PinName vol)
mpetersen3 0:9cb0b3d1b9e6 16 :
mpetersen3 0:9cb0b3d1b9e6 17 _sd(mmosi, mmiso, ssck, ccs, name),
mpetersen3 0:9cb0b3d1b9e6 18 _spi(mosi, miso, sck),
mpetersen3 0:9cb0b3d1b9e6 19 _CS(cs),
mpetersen3 0:9cb0b3d1b9e6 20 _RST(rst),
mpetersen3 0:9cb0b3d1b9e6 21 _DREQ(dreq),
mpetersen3 0:9cb0b3d1b9e6 22 _DCS(dcs),
mpetersen3 0:9cb0b3d1b9e6 23 _VOL(vol) {
mpetersen3 0:9cb0b3d1b9e6 24
mpetersen3 0:9cb0b3d1b9e6 25 }
mpetersen3 0:9cb0b3d1b9e6 26
mpetersen3 0:9cb0b3d1b9e6 27 /*===================================================================
mpetersen3 0:9cb0b3d1b9e6 28 * Functions
mpetersen3 0:9cb0b3d1b9e6 29 *==================================================================*/
mpetersen3 0:9cb0b3d1b9e6 30
mpetersen3 0:9cb0b3d1b9e6 31 void VS1002::cs_low(void)
mpetersen3 0:9cb0b3d1b9e6 32 {
mpetersen3 0:9cb0b3d1b9e6 33 _CS = 0;
mpetersen3 0:9cb0b3d1b9e6 34 }
mpetersen3 0:9cb0b3d1b9e6 35 void VS1002::cs_high(void)
mpetersen3 0:9cb0b3d1b9e6 36 {
mpetersen3 0:9cb0b3d1b9e6 37 _CS = 1;
mpetersen3 0:9cb0b3d1b9e6 38 }
mpetersen3 0:9cb0b3d1b9e6 39 void VS1002::dcs_low(void)
mpetersen3 0:9cb0b3d1b9e6 40 {
mpetersen3 0:9cb0b3d1b9e6 41 _DCS = 0;
mpetersen3 0:9cb0b3d1b9e6 42 }
mpetersen3 0:9cb0b3d1b9e6 43 void VS1002::dcs_high(void)
mpetersen3 0:9cb0b3d1b9e6 44 {
mpetersen3 0:9cb0b3d1b9e6 45 _DCS = 1;
mpetersen3 0:9cb0b3d1b9e6 46 }
mpetersen3 0:9cb0b3d1b9e6 47 void VS1002::sci_en(void) //SCI enable
mpetersen3 0:9cb0b3d1b9e6 48 {
mpetersen3 0:9cb0b3d1b9e6 49 cs_high();
mpetersen3 0:9cb0b3d1b9e6 50 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 51 cs_low();
mpetersen3 0:9cb0b3d1b9e6 52 }
mpetersen3 0:9cb0b3d1b9e6 53 void VS1002::sci_dis(void) //SCI disable
mpetersen3 0:9cb0b3d1b9e6 54 {
mpetersen3 0:9cb0b3d1b9e6 55 cs_high();
mpetersen3 0:9cb0b3d1b9e6 56 }
mpetersen3 0:9cb0b3d1b9e6 57 void VS1002::sdi_en(void) //SDI enable
mpetersen3 0:9cb0b3d1b9e6 58 {
mpetersen3 0:9cb0b3d1b9e6 59 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 60 cs_high();
mpetersen3 0:9cb0b3d1b9e6 61 dcs_low();
mpetersen3 0:9cb0b3d1b9e6 62 }
mpetersen3 0:9cb0b3d1b9e6 63 void VS1002::sdi_dis(void) //SDI disable
mpetersen3 0:9cb0b3d1b9e6 64 {
mpetersen3 0:9cb0b3d1b9e6 65 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 66 }
mpetersen3 0:9cb0b3d1b9e6 67 void VS1002::reset(void) //hardware reset
mpetersen3 0:9cb0b3d1b9e6 68 {
mpetersen3 0:9cb0b3d1b9e6 69 wait(0.01);
mpetersen3 0:9cb0b3d1b9e6 70 _RST = 0;
mpetersen3 0:9cb0b3d1b9e6 71 wait(0.01);
mpetersen3 0:9cb0b3d1b9e6 72 _RST = 1;
mpetersen3 0:9cb0b3d1b9e6 73 wait(0.10);
mpetersen3 0:9cb0b3d1b9e6 74 }
mpetersen3 0:9cb0b3d1b9e6 75 void VS1002::power_down(void) //hardware and software reset
mpetersen3 0:9cb0b3d1b9e6 76 {
mpetersen3 0:9cb0b3d1b9e6 77 cs_low();
mpetersen3 0:9cb0b3d1b9e6 78 reset();
mpetersen3 0:9cb0b3d1b9e6 79 sci_write(0x00, SM_PDOWN);
mpetersen3 0:9cb0b3d1b9e6 80 wait(0.01);
mpetersen3 0:9cb0b3d1b9e6 81 reset();
mpetersen3 0:9cb0b3d1b9e6 82 }
mpetersen3 0:9cb0b3d1b9e6 83 void VS1002::sci_initialise(void)
mpetersen3 0:9cb0b3d1b9e6 84 {
mpetersen3 0:9cb0b3d1b9e6 85 _RST = 1; //no reset
mpetersen3 0:9cb0b3d1b9e6 86 _spi.format(8,0); //spi 8bit interface, steady state low
mpetersen3 0:9cb0b3d1b9e6 87 _spi.frequency(1000000); //rising edge data record, freq. 1Mhz
mpetersen3 0:9cb0b3d1b9e6 88
mpetersen3 0:9cb0b3d1b9e6 89 cs_low();
mpetersen3 0:9cb0b3d1b9e6 90 for(int i=0; i<4; i++)
mpetersen3 0:9cb0b3d1b9e6 91 {
mpetersen3 0:9cb0b3d1b9e6 92 _spi.write(0xFF); //clock the chip a bit
mpetersen3 0:9cb0b3d1b9e6 93 }
mpetersen3 0:9cb0b3d1b9e6 94 cs_high();
mpetersen3 0:9cb0b3d1b9e6 95 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 96 wait_us(5);
mpetersen3 0:9cb0b3d1b9e6 97 }
mpetersen3 0:9cb0b3d1b9e6 98 void VS1002::sdi_initialise(void)
mpetersen3 0:9cb0b3d1b9e6 99 {
mpetersen3 0:9cb0b3d1b9e6 100 _spi.format(8,0);
mpetersen3 0:9cb0b3d1b9e6 101 _spi.frequency(7000000); //set to 7MHz
mpetersen3 0:9cb0b3d1b9e6 102
mpetersen3 0:9cb0b3d1b9e6 103 cs_high();
mpetersen3 0:9cb0b3d1b9e6 104 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 105 }
mpetersen3 0:9cb0b3d1b9e6 106 void VS1002::sci_write(unsigned char address, unsigned short int data)
mpetersen3 0:9cb0b3d1b9e6 107 {
mpetersen3 0:9cb0b3d1b9e6 108 sci_en(); //enables SCI/disables SDI
mpetersen3 0:9cb0b3d1b9e6 109
mpetersen3 0:9cb0b3d1b9e6 110 while(!_DREQ); //wait unitl data request is high
mpetersen3 0:9cb0b3d1b9e6 111 _spi.write(0x02); //SCI write
mpetersen3 0:9cb0b3d1b9e6 112 _spi.write(address); //register address
mpetersen3 0:9cb0b3d1b9e6 113 _spi.write((data >> 8) & 0xFF); //write out first half of data word
mpetersen3 0:9cb0b3d1b9e6 114 _spi.write(data & 0xFF); //write out second half of data word
mpetersen3 0:9cb0b3d1b9e6 115
mpetersen3 0:9cb0b3d1b9e6 116 sci_dis(); //enables SDI/disables SCI
mpetersen3 0:9cb0b3d1b9e6 117 wait_us(5);
mpetersen3 0:9cb0b3d1b9e6 118 }
mpetersen3 0:9cb0b3d1b9e6 119 void VS1002::sdi_write(unsigned char datum)
mpetersen3 0:9cb0b3d1b9e6 120 {
mpetersen3 0:9cb0b3d1b9e6 121 sdi_en();
mpetersen3 0:9cb0b3d1b9e6 122
mpetersen3 0:9cb0b3d1b9e6 123 while(!_DREQ);
mpetersen3 0:9cb0b3d1b9e6 124 _spi.write(datum);
mpetersen3 0:9cb0b3d1b9e6 125
mpetersen3 0:9cb0b3d1b9e6 126 sci_dis();
mpetersen3 0:9cb0b3d1b9e6 127 }
mpetersen3 0:9cb0b3d1b9e6 128 unsigned short int VS1002::read(unsigned short int address)
mpetersen3 0:9cb0b3d1b9e6 129 {
mpetersen3 0:9cb0b3d1b9e6 130 cs_low(); //enables SCI/disables SDI
mpetersen3 0:9cb0b3d1b9e6 131
mpetersen3 0:9cb0b3d1b9e6 132 while(!_DREQ); //wait unitl data request is high
mpetersen3 0:9cb0b3d1b9e6 133 _spi.write(0x03); //SCI write
mpetersen3 0:9cb0b3d1b9e6 134 _spi.write(address); //register address
mpetersen3 0:9cb0b3d1b9e6 135 unsigned short int received = _spi.write(0x00); //write out dummy byte
mpetersen3 0:9cb0b3d1b9e6 136 received <<= 8;
mpetersen3 0:9cb0b3d1b9e6 137 received += _spi.write(0x00); //write out dummy byte
mpetersen3 0:9cb0b3d1b9e6 138
mpetersen3 0:9cb0b3d1b9e6 139 cs_high(); //enables SDI/disables SCI
mpetersen3 0:9cb0b3d1b9e6 140
mpetersen3 0:9cb0b3d1b9e6 141 return received; //return received word
mpetersen3 0:9cb0b3d1b9e6 142 }
mpetersen3 0:9cb0b3d1b9e6 143 void VS1002::sine_test_activate(unsigned char wave)
mpetersen3 0:9cb0b3d1b9e6 144 {
mpetersen3 0:9cb0b3d1b9e6 145 cs_high(); //enables SDI/disables SCI
mpetersen3 0:9cb0b3d1b9e6 146
mpetersen3 0:9cb0b3d1b9e6 147 while(!_DREQ); //wait unitl data request is high
mpetersen3 0:9cb0b3d1b9e6 148 _spi.write(0x53); //SDI write
mpetersen3 0:9cb0b3d1b9e6 149 _spi.write(0xEF); //SDI write
mpetersen3 0:9cb0b3d1b9e6 150 _spi.write(0x6E); //SDI write
mpetersen3 0:9cb0b3d1b9e6 151 _spi.write(wave); //SDI write
mpetersen3 0:9cb0b3d1b9e6 152 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 153 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 154 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 155 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 156
mpetersen3 0:9cb0b3d1b9e6 157 cs_low(); //enables SCI/disables SDI
mpetersen3 0:9cb0b3d1b9e6 158 }
mpetersen3 0:9cb0b3d1b9e6 159 void VS1002::sine_test_deactivate(void)
mpetersen3 0:9cb0b3d1b9e6 160 {
mpetersen3 0:9cb0b3d1b9e6 161 cs_high();
mpetersen3 0:9cb0b3d1b9e6 162
mpetersen3 0:9cb0b3d1b9e6 163 while(!_DREQ);
mpetersen3 0:9cb0b3d1b9e6 164 _spi.write(0x45); //SDI write
mpetersen3 0:9cb0b3d1b9e6 165 _spi.write(0x78); //SDI write
mpetersen3 0:9cb0b3d1b9e6 166 _spi.write(0x69); //SDI write
mpetersen3 0:9cb0b3d1b9e6 167 _spi.write(0x74); //SDI write
mpetersen3 0:9cb0b3d1b9e6 168 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 169 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 170 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 171 _spi.write(0x00); //filler byte
mpetersen3 0:9cb0b3d1b9e6 172 }
mpetersen3 0:9cb0b3d1b9e6 173 void VS1002::volume(void)
mpetersen3 0:9cb0b3d1b9e6 174 {
mpetersen3 0:9cb0b3d1b9e6 175 #ifdef FIXED_VOL
mpetersen3 0:9cb0b3d1b9e6 176 unsigned char volumize = (0 * 255); // FIXED VOL (not support volume input)
mpetersen3 0:9cb0b3d1b9e6 177 #else
mpetersen3 0:9cb0b3d1b9e6 178 unsigned char volumize = (_VOL * 255);
mpetersen3 0:9cb0b3d1b9e6 179 #endif
mpetersen3 0:9cb0b3d1b9e6 180 while(!_DREQ);
mpetersen3 0:9cb0b3d1b9e6 181
mpetersen3 0:9cb0b3d1b9e6 182 unsigned short int attenuation = ((256 * volumize) + volumize);
mpetersen3 0:9cb0b3d1b9e6 183 sci_write(0x0B, attenuation);
mpetersen3 0:9cb0b3d1b9e6 184
mpetersen3 0:9cb0b3d1b9e6 185 }
mpetersen3 0:9cb0b3d1b9e6 186
mpetersen3 0:9cb0b3d1b9e6 187 void VS1002::play_song(int song_number)
mpetersen3 0:9cb0b3d1b9e6 188 {
mpetersen3 0:9cb0b3d1b9e6 189 /*====== Song Select ======*/
mpetersen3 0:9cb0b3d1b9e6 190
mpetersen3 0:9cb0b3d1b9e6 191 // char list[10000] = {0};
mpetersen3 0:9cb0b3d1b9e6 192 char list[1000] = {0};
mpetersen3 0:9cb0b3d1b9e6 193 char str[16] = {"/sd/"};
mpetersen3 0:9cb0b3d1b9e6 194 unsigned int startplace = 0;
mpetersen3 0:9cb0b3d1b9e6 195 unsigned int endplace = 0;
mpetersen3 0:9cb0b3d1b9e6 196 unsigned int play = 0;
mpetersen3 0:9cb0b3d1b9e6 197 num_of_files = 0;
mpetersen3 0:9cb0b3d1b9e6 198
mpetersen3 0:9cb0b3d1b9e6 199 DIR *d;
mpetersen3 0:9cb0b3d1b9e6 200 struct dirent *p;
mpetersen3 0:9cb0b3d1b9e6 201 d = opendir("/sd");
mpetersen3 0:9cb0b3d1b9e6 202 if(d != NULL)
mpetersen3 0:9cb0b3d1b9e6 203 {
mpetersen3 0:9cb0b3d1b9e6 204 while((p = readdir(d)) != NULL)
mpetersen3 0:9cb0b3d1b9e6 205 {
mpetersen3 0:9cb0b3d1b9e6 206 strcat(list, "*");
mpetersen3 0:9cb0b3d1b9e6 207 strcat(list, p->d_name);
mpetersen3 0:9cb0b3d1b9e6 208 num_of_files++;
mpetersen3 0:9cb0b3d1b9e6 209 }
mpetersen3 0:9cb0b3d1b9e6 210 }
mpetersen3 0:9cb0b3d1b9e6 211 else
mpetersen3 0:9cb0b3d1b9e6 212 {
mpetersen3 0:9cb0b3d1b9e6 213 perror("Could not open directory!");
mpetersen3 0:9cb0b3d1b9e6 214 }
mpetersen3 0:9cb0b3d1b9e6 215 strcat(list, "*"); //terminating *
mpetersen3 0:9cb0b3d1b9e6 216 if(num_of_files < song_number)
mpetersen3 0:9cb0b3d1b9e6 217 {
mpetersen3 0:9cb0b3d1b9e6 218 return;
mpetersen3 0:9cb0b3d1b9e6 219 }
mpetersen3 0:9cb0b3d1b9e6 220 while(play != song_number)
mpetersen3 0:9cb0b3d1b9e6 221 {
mpetersen3 0:9cb0b3d1b9e6 222 char symbol = list[startplace];
mpetersen3 0:9cb0b3d1b9e6 223 startplace++;
mpetersen3 0:9cb0b3d1b9e6 224 if(symbol == 0x2A) //0x2A = "*"
mpetersen3 0:9cb0b3d1b9e6 225 {
mpetersen3 0:9cb0b3d1b9e6 226 play++;
mpetersen3 0:9cb0b3d1b9e6 227 }
mpetersen3 0:9cb0b3d1b9e6 228 }
mpetersen3 0:9cb0b3d1b9e6 229 play = 0;
mpetersen3 0:9cb0b3d1b9e6 230 while(play != (song_number+1))
mpetersen3 0:9cb0b3d1b9e6 231 {
mpetersen3 0:9cb0b3d1b9e6 232 char symbol = list[endplace];
mpetersen3 0:9cb0b3d1b9e6 233 endplace++;
mpetersen3 0:9cb0b3d1b9e6 234 if(symbol == 0x2A) //0x2A = "*"
mpetersen3 0:9cb0b3d1b9e6 235 {
mpetersen3 0:9cb0b3d1b9e6 236 play++;
mpetersen3 0:9cb0b3d1b9e6 237 }
mpetersen3 0:9cb0b3d1b9e6 238 }
mpetersen3 0:9cb0b3d1b9e6 239
mpetersen3 0:9cb0b3d1b9e6 240 strncat(str, &list[startplace], endplace-startplace);
mpetersen3 0:9cb0b3d1b9e6 241 str[(endplace-startplace)+3] = '\0';
mpetersen3 0:9cb0b3d1b9e6 242
mpetersen3 0:9cb0b3d1b9e6 243 //printf("list: %s\r\n",list); //debug
mpetersen3 0:9cb0b3d1b9e6 244
mpetersen3 0:9cb0b3d1b9e6 245 /*====== File Transfer ======*/
mpetersen3 0:9cb0b3d1b9e6 246
mpetersen3 0:9cb0b3d1b9e6 247 // return if not MP3 file
mpetersen3 0:9cb0b3d1b9e6 248 if (!((strstr(str,"MP3")!=NULL)||(strstr(str,"mp3")!=NULL))) return;
mpetersen3 0:9cb0b3d1b9e6 249 // display filename.mp3 to the lcd screen
mpetersen3 0:9cb0b3d1b9e6 250 lcd.printf("Now Playing: %s\r\n",str);
mpetersen3 0:9cb0b3d1b9e6 251
mpetersen3 0:9cb0b3d1b9e6 252 FILE *song;
mpetersen3 0:9cb0b3d1b9e6 253 unsigned char array[512];
mpetersen3 0:9cb0b3d1b9e6 254
mpetersen3 0:9cb0b3d1b9e6 255 song = fopen(str, "rb");
mpetersen3 0:9cb0b3d1b9e6 256
mpetersen3 0:9cb0b3d1b9e6 257 if(!song)
mpetersen3 0:9cb0b3d1b9e6 258 {
mpetersen3 0:9cb0b3d1b9e6 259 exit(1);
mpetersen3 0:9cb0b3d1b9e6 260 }
mpetersen3 0:9cb0b3d1b9e6 261
mpetersen3 0:9cb0b3d1b9e6 262 while((!feof(song))&&!pause1)
mpetersen3 0:9cb0b3d1b9e6 263 {
mpetersen3 0:9cb0b3d1b9e6 264 fread(&array, 1, 512, song);
mpetersen3 0:9cb0b3d1b9e6 265 for(int i=0; i<512; i++)
mpetersen3 0:9cb0b3d1b9e6 266 {
mpetersen3 0:9cb0b3d1b9e6 267 #ifndef FS_ONLY
mpetersen3 0:9cb0b3d1b9e6 268 sdi_write(array[i]);
mpetersen3 0:9cb0b3d1b9e6 269 // printf(".");
mpetersen3 0:9cb0b3d1b9e6 270 #endif
mpetersen3 0:9cb0b3d1b9e6 271 }
mpetersen3 0:9cb0b3d1b9e6 272 #ifndef FS_ONLY
mpetersen3 0:9cb0b3d1b9e6 273 volume();
mpetersen3 0:9cb0b3d1b9e6 274 #endif
mpetersen3 0:9cb0b3d1b9e6 275 }
mpetersen3 0:9cb0b3d1b9e6 276 for(int n=0; n<2048; n++)
mpetersen3 0:9cb0b3d1b9e6 277 {
mpetersen3 0:9cb0b3d1b9e6 278 #ifndef FS_ONLY
mpetersen3 0:9cb0b3d1b9e6 279 sdi_write(0x00);
mpetersen3 0:9cb0b3d1b9e6 280 #endif
mpetersen3 0:9cb0b3d1b9e6 281 }
mpetersen3 0:9cb0b3d1b9e6 282 fclose(song); //close the file
mpetersen3 0:9cb0b3d1b9e6 283 }