Smart pole
Dependencies: FTPClient SDFileSystem WIZnetInterface mbed
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VS1002.cpp@0:fa775d326f9c, 2015-09-22 (annotated)
- Committer:
- justinkim
- Date:
- Tue Sep 22 23:14:59 2015 +0000
- Revision:
- 0:fa775d326f9c
- Child:
- 1:c47c255fcad4
Music Player
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
justinkim | 0:fa775d326f9c | 1 | #include "VS1002.h" |
justinkim | 0:fa775d326f9c | 2 | #include "mbed.h" |
justinkim | 0:fa775d326f9c | 3 | |
justinkim | 0:fa775d326f9c | 4 | Serial pc(USBTX, USBRX); |
justinkim | 0:fa775d326f9c | 5 | TextLCD lcd(D8, D9, D0, D1, D2, D15); |
justinkim | 0:fa775d326f9c | 6 | |
justinkim | 0:fa775d326f9c | 7 | /* ================================================================== |
justinkim | 0:fa775d326f9c | 8 | * Constructor |
justinkim | 0:fa775d326f9c | 9 | * =================================================================*/ |
justinkim | 0:fa775d326f9c | 10 | |
justinkim | 0:fa775d326f9c | 11 | VS1002::VS1002(PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name, PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst, PinName dreq, PinName dcs) |
justinkim | 0:fa775d326f9c | 12 | : _DREQ(dreq), _RST(rst), _spi(mosi, miso, sck), _CS(cs), _DCS(dcs), _sd(mmosi, mmiso, ssck, ccs, name) { |
justinkim | 0:fa775d326f9c | 13 | |
justinkim | 0:fa775d326f9c | 14 | } |
justinkim | 0:fa775d326f9c | 15 | |
justinkim | 0:fa775d326f9c | 16 | /*=================================================================== |
justinkim | 0:fa775d326f9c | 17 | * Functions |
justinkim | 0:fa775d326f9c | 18 | *==================================================================*/ |
justinkim | 0:fa775d326f9c | 19 | |
justinkim | 0:fa775d326f9c | 20 | void VS1002::cs_low(void) |
justinkim | 0:fa775d326f9c | 21 | { |
justinkim | 0:fa775d326f9c | 22 | _CS = 0; |
justinkim | 0:fa775d326f9c | 23 | } |
justinkim | 0:fa775d326f9c | 24 | void VS1002::cs_high(void) |
justinkim | 0:fa775d326f9c | 25 | { |
justinkim | 0:fa775d326f9c | 26 | _CS = 1; |
justinkim | 0:fa775d326f9c | 27 | } |
justinkim | 0:fa775d326f9c | 28 | void VS1002::dcs_low(void) |
justinkim | 0:fa775d326f9c | 29 | { |
justinkim | 0:fa775d326f9c | 30 | _DCS = 0; |
justinkim | 0:fa775d326f9c | 31 | } |
justinkim | 0:fa775d326f9c | 32 | void VS1002::dcs_high(void) |
justinkim | 0:fa775d326f9c | 33 | { |
justinkim | 0:fa775d326f9c | 34 | _DCS = 1; |
justinkim | 0:fa775d326f9c | 35 | } |
justinkim | 0:fa775d326f9c | 36 | void VS1002::sci_en(void) //SCI enable |
justinkim | 0:fa775d326f9c | 37 | { |
justinkim | 0:fa775d326f9c | 38 | cs_high(); |
justinkim | 0:fa775d326f9c | 39 | dcs_high(); |
justinkim | 0:fa775d326f9c | 40 | cs_low(); |
justinkim | 0:fa775d326f9c | 41 | } |
justinkim | 0:fa775d326f9c | 42 | void VS1002::sci_dis(void) //SCI disable |
justinkim | 0:fa775d326f9c | 43 | { |
justinkim | 0:fa775d326f9c | 44 | cs_high(); |
justinkim | 0:fa775d326f9c | 45 | } |
justinkim | 0:fa775d326f9c | 46 | void VS1002::sdi_en(void) //SDI enable |
justinkim | 0:fa775d326f9c | 47 | { |
justinkim | 0:fa775d326f9c | 48 | dcs_high(); |
justinkim | 0:fa775d326f9c | 49 | cs_high(); |
justinkim | 0:fa775d326f9c | 50 | dcs_low(); |
justinkim | 0:fa775d326f9c | 51 | } |
justinkim | 0:fa775d326f9c | 52 | void VS1002::sdi_dis(void) //SDI disable |
justinkim | 0:fa775d326f9c | 53 | { |
justinkim | 0:fa775d326f9c | 54 | dcs_high(); |
justinkim | 0:fa775d326f9c | 55 | } |
justinkim | 0:fa775d326f9c | 56 | void VS1002::reset(void) //hardware reset |
justinkim | 0:fa775d326f9c | 57 | { |
justinkim | 0:fa775d326f9c | 58 | wait(0.01); |
justinkim | 0:fa775d326f9c | 59 | _RST = 0; |
justinkim | 0:fa775d326f9c | 60 | wait(0.01); |
justinkim | 0:fa775d326f9c | 61 | _RST = 1; |
justinkim | 0:fa775d326f9c | 62 | wait(0.10); |
justinkim | 0:fa775d326f9c | 63 | } |
justinkim | 0:fa775d326f9c | 64 | void VS1002::power_down(void) //hardware and software reset |
justinkim | 0:fa775d326f9c | 65 | { |
justinkim | 0:fa775d326f9c | 66 | cs_low(); |
justinkim | 0:fa775d326f9c | 67 | reset(); |
justinkim | 0:fa775d326f9c | 68 | sci_write(0x00, SM_PDOWN); |
justinkim | 0:fa775d326f9c | 69 | wait(0.01); |
justinkim | 0:fa775d326f9c | 70 | reset(); |
justinkim | 0:fa775d326f9c | 71 | } |
justinkim | 0:fa775d326f9c | 72 | void VS1002::sci_initialise(void) |
justinkim | 0:fa775d326f9c | 73 | { |
justinkim | 0:fa775d326f9c | 74 | _RST = 1; //no reset |
justinkim | 0:fa775d326f9c | 75 | _spi.format(8,0); //spi 8bit interface, steady state low |
justinkim | 0:fa775d326f9c | 76 | _spi.frequency(1000000); //rising edge data record, freq. 1Mhz |
justinkim | 0:fa775d326f9c | 77 | |
justinkim | 0:fa775d326f9c | 78 | cs_low(); |
justinkim | 0:fa775d326f9c | 79 | for(int i=0; i<4; i++) |
justinkim | 0:fa775d326f9c | 80 | { |
justinkim | 0:fa775d326f9c | 81 | _spi.write(0xFF); //clock the chip a bit |
justinkim | 0:fa775d326f9c | 82 | } |
justinkim | 0:fa775d326f9c | 83 | cs_high(); |
justinkim | 0:fa775d326f9c | 84 | dcs_high(); |
justinkim | 0:fa775d326f9c | 85 | wait_us(5); |
justinkim | 0:fa775d326f9c | 86 | } |
justinkim | 0:fa775d326f9c | 87 | void VS1002::sdi_initialise(void) |
justinkim | 0:fa775d326f9c | 88 | { |
justinkim | 0:fa775d326f9c | 89 | _spi.format(8,0); |
justinkim | 0:fa775d326f9c | 90 | _spi.frequency(7000000); //set to 7MHz |
justinkim | 0:fa775d326f9c | 91 | |
justinkim | 0:fa775d326f9c | 92 | cs_high(); |
justinkim | 0:fa775d326f9c | 93 | dcs_high(); |
justinkim | 0:fa775d326f9c | 94 | } |
justinkim | 0:fa775d326f9c | 95 | void VS1002::sci_write(unsigned char address, unsigned short int data) |
justinkim | 0:fa775d326f9c | 96 | { |
justinkim | 0:fa775d326f9c | 97 | sci_en(); //enables SCI/disables SDI |
justinkim | 0:fa775d326f9c | 98 | |
justinkim | 0:fa775d326f9c | 99 | while(!_DREQ); //wait unitl data request is high |
justinkim | 0:fa775d326f9c | 100 | _spi.write(0x02); //SCI write |
justinkim | 0:fa775d326f9c | 101 | _spi.write(address); //register address |
justinkim | 0:fa775d326f9c | 102 | _spi.write((data >> 8) & 0xFF); //write out first half of data word |
justinkim | 0:fa775d326f9c | 103 | _spi.write(data & 0xFF); //write out second half of data word |
justinkim | 0:fa775d326f9c | 104 | |
justinkim | 0:fa775d326f9c | 105 | sci_dis(); //enables SDI/disables SCI |
justinkim | 0:fa775d326f9c | 106 | wait_us(5); |
justinkim | 0:fa775d326f9c | 107 | } |
justinkim | 0:fa775d326f9c | 108 | void VS1002::sdi_write(unsigned char datum) |
justinkim | 0:fa775d326f9c | 109 | { |
justinkim | 0:fa775d326f9c | 110 | sdi_en(); |
justinkim | 0:fa775d326f9c | 111 | |
justinkim | 0:fa775d326f9c | 112 | while(!_DREQ); |
justinkim | 0:fa775d326f9c | 113 | _spi.write(datum); |
justinkim | 0:fa775d326f9c | 114 | |
justinkim | 0:fa775d326f9c | 115 | sci_dis(); |
justinkim | 0:fa775d326f9c | 116 | } |
justinkim | 0:fa775d326f9c | 117 | unsigned short int VS1002::read(unsigned short int address) |
justinkim | 0:fa775d326f9c | 118 | { |
justinkim | 0:fa775d326f9c | 119 | cs_low(); //enables SCI/disables SDI |
justinkim | 0:fa775d326f9c | 120 | |
justinkim | 0:fa775d326f9c | 121 | while(!_DREQ); //wait unitl data request is high |
justinkim | 0:fa775d326f9c | 122 | _spi.write(0x03); //SCI write |
justinkim | 0:fa775d326f9c | 123 | _spi.write(address); //register address |
justinkim | 0:fa775d326f9c | 124 | unsigned short int received = _spi.write(0x00); //write out dummy byte |
justinkim | 0:fa775d326f9c | 125 | received <<= 8; |
justinkim | 0:fa775d326f9c | 126 | received += _spi.write(0x00); //write out dummy byte |
justinkim | 0:fa775d326f9c | 127 | |
justinkim | 0:fa775d326f9c | 128 | cs_high(); //enables SDI/disables SCI |
justinkim | 0:fa775d326f9c | 129 | |
justinkim | 0:fa775d326f9c | 130 | return received; //return received word |
justinkim | 0:fa775d326f9c | 131 | } |
justinkim | 0:fa775d326f9c | 132 | void VS1002::sine_test_activate(unsigned char wave) |
justinkim | 0:fa775d326f9c | 133 | { |
justinkim | 0:fa775d326f9c | 134 | cs_high(); //enables SDI/disables SCI |
justinkim | 0:fa775d326f9c | 135 | |
justinkim | 0:fa775d326f9c | 136 | while(!_DREQ); //wait unitl data request is high |
justinkim | 0:fa775d326f9c | 137 | _spi.write(0x53); //SDI write |
justinkim | 0:fa775d326f9c | 138 | _spi.write(0xEF); //SDI write |
justinkim | 0:fa775d326f9c | 139 | _spi.write(0x6E); //SDI write |
justinkim | 0:fa775d326f9c | 140 | _spi.write(wave); //SDI write |
justinkim | 0:fa775d326f9c | 141 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 142 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 143 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 144 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 145 | |
justinkim | 0:fa775d326f9c | 146 | cs_low(); //enables SCI/disables SDI |
justinkim | 0:fa775d326f9c | 147 | } |
justinkim | 0:fa775d326f9c | 148 | void VS1002::sine_test_deactivate(void) |
justinkim | 0:fa775d326f9c | 149 | { |
justinkim | 0:fa775d326f9c | 150 | cs_high(); |
justinkim | 0:fa775d326f9c | 151 | |
justinkim | 0:fa775d326f9c | 152 | while(!_DREQ); |
justinkim | 0:fa775d326f9c | 153 | _spi.write(0x45); //SDI write |
justinkim | 0:fa775d326f9c | 154 | _spi.write(0x78); //SDI write |
justinkim | 0:fa775d326f9c | 155 | _spi.write(0x69); //SDI write |
justinkim | 0:fa775d326f9c | 156 | _spi.write(0x74); //SDI write |
justinkim | 0:fa775d326f9c | 157 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 158 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 159 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 160 | _spi.write(0x00); //filler byte |
justinkim | 0:fa775d326f9c | 161 | } |
justinkim | 0:fa775d326f9c | 162 | |
justinkim | 0:fa775d326f9c | 163 | |
justinkim | 0:fa775d326f9c | 164 | void VS1002::volume(signed int left, signed int right) |
justinkim | 0:fa775d326f9c | 165 | { |
justinkim | 0:fa775d326f9c | 166 | while(_DREQ == 0); |
justinkim | 0:fa775d326f9c | 167 | |
justinkim | 0:fa775d326f9c | 168 | unsigned short int _left = -left; //convert the decibel values into a format |
justinkim | 0:fa775d326f9c | 169 | unsigned short int _right = -right; //readable by the chip cf. datasheet p.32 subsection 8.6.11 |
justinkim | 0:fa775d326f9c | 170 | _left *= 2; |
justinkim | 0:fa775d326f9c | 171 | _right *= 2; |
justinkim | 0:fa775d326f9c | 172 | unsigned short int attenuation = ((256 * _left) + _right); |
justinkim | 0:fa775d326f9c | 173 | cs_low(); |
justinkim | 0:fa775d326f9c | 174 | sci_write(0x0B, attenuation); //writeout these values |
justinkim | 0:fa775d326f9c | 175 | cs_high(); |
justinkim | 0:fa775d326f9c | 176 | } |
justinkim | 0:fa775d326f9c | 177 | |
justinkim | 0:fa775d326f9c | 178 | void VS1002::play_song(int song_number) |
justinkim | 0:fa775d326f9c | 179 | { |
justinkim | 0:fa775d326f9c | 180 | /*====== Song Select ======*/ |
justinkim | 0:fa775d326f9c | 181 | char str[16]; //folder where the songs are located |
justinkim | 0:fa775d326f9c | 182 | sprintf(str,"/sdc/%d",song_number); //appending song number to path of the file |
justinkim | 0:fa775d326f9c | 183 | strcat(str,".mp3"); //appending .mp3 to file name |
justinkim | 0:fa775d326f9c | 184 | FILE *song; |
justinkim | 0:fa775d326f9c | 185 | unsigned char array[512]; //array for reading data from file |
justinkim | 0:fa775d326f9c | 186 | bool play_new=false; // Variable to see if new_song has be assigned or not |
justinkim | 0:fa775d326f9c | 187 | song = fopen(str, "r"); // Open the music file in read mode |
justinkim | 0:fa775d326f9c | 188 | /* Printing to LCD the present status */ |
justinkim | 0:fa775d326f9c | 189 | lcd.cls(); |
justinkim | 0:fa775d326f9c | 190 | if(pause) |
justinkim | 0:fa775d326f9c | 191 | lcd.printf(" Paused "); |
justinkim | 0:fa775d326f9c | 192 | if(mute) |
justinkim | 0:fa775d326f9c | 193 | lcd.printf("Muted"); |
justinkim | 0:fa775d326f9c | 194 | if(!mute && !pause) |
justinkim | 0:fa775d326f9c | 195 | lcd.printf(" Playing..."); |
justinkim | 0:fa775d326f9c | 196 | |
justinkim | 0:fa775d326f9c | 197 | lcd.printf("\n %d %s",new_song_number,song_name[new_song_number-1]); |
justinkim | 0:fa775d326f9c | 198 | |
justinkim | 0:fa775d326f9c | 199 | if(!song) |
justinkim | 0:fa775d326f9c | 200 | { |
justinkim | 0:fa775d326f9c | 201 | lcd.printf("\n \n Error!!"); |
justinkim | 0:fa775d326f9c | 202 | new_song_number+=1; // Goto Next song on completion of one song |
justinkim | 0:fa775d326f9c | 203 | if(new_song_number==10) |
justinkim | 0:fa775d326f9c | 204 | new_song_number=1; |
justinkim | 0:fa775d326f9c | 205 | } |
justinkim | 0:fa775d326f9c | 206 | while(!feof(song)) |
justinkim | 0:fa775d326f9c | 207 | { |
justinkim | 0:fa775d326f9c | 208 | if(!pause) |
justinkim | 0:fa775d326f9c | 209 | { |
justinkim | 0:fa775d326f9c | 210 | |
justinkim | 0:fa775d326f9c | 211 | fread(&array, 1, 512, song); |
justinkim | 0:fa775d326f9c | 212 | for(int i=0; i<512; i++) |
justinkim | 0:fa775d326f9c | 213 | { |
justinkim | 0:fa775d326f9c | 214 | sdi_write(array[i]); |
justinkim | 0:fa775d326f9c | 215 | } |
justinkim | 0:fa775d326f9c | 216 | volume(volume_set,volume_set); |
justinkim | 0:fa775d326f9c | 217 | } |
justinkim | 0:fa775d326f9c | 218 | if(new_song_number!=song_number) |
justinkim | 0:fa775d326f9c | 219 | { |
justinkim | 0:fa775d326f9c | 220 | play_new=true; |
justinkim | 0:fa775d326f9c | 221 | break; |
justinkim | 0:fa775d326f9c | 222 | } |
justinkim | 0:fa775d326f9c | 223 | |
justinkim | 0:fa775d326f9c | 224 | |
justinkim | 0:fa775d326f9c | 225 | } |
justinkim | 0:fa775d326f9c | 226 | |
justinkim | 0:fa775d326f9c | 227 | fclose(song); //close the file |
justinkim | 0:fa775d326f9c | 228 | |
justinkim | 0:fa775d326f9c | 229 | if(!play_new) |
justinkim | 0:fa775d326f9c | 230 | { |
justinkim | 0:fa775d326f9c | 231 | new_song_number+=1; // Goto Next song on completion of one song |
justinkim | 0:fa775d326f9c | 232 | if(new_song_number==10) |
justinkim | 0:fa775d326f9c | 233 | new_song_number=1; |
justinkim | 0:fa775d326f9c | 234 | play_new=false; |
justinkim | 0:fa775d326f9c | 235 | } |
justinkim | 0:fa775d326f9c | 236 | } |
justinkim | 0:fa775d326f9c | 237 |