chong wang / Mbed 2 deprecated lab3-News_Reader1

News_Reader

Dependencies:   FatFileSystem HTTPClient NetServices RPG SDFileSystem TextLCD mbed spxml

Fork of Arduino_MP3_Shield_MP3Player_UI by Matthew Petersen

VS1002.cpp@2:447591cbba27, 2013-03-06 (annotated)

Committer:
cwang365
Date:
Wed Mar 06 00:37:29 2013 +0000
Revision:
2:447591cbba27
Parent:
1:0014879fa94f 
lab3_news_reader

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(
cwang365 1:0014879fa94f 13 PinName mmosi, PinName mmiso, PinName ssck, PinName ccs, const char *name,
cwang365 1:0014879fa94f 14 PinName mosi, PinName miso, PinName sck, PinName cs, PinName rst,
cwang365 1:0014879fa94f 15 PinName dreq, PinName dcs, PinName vol)
mpetersen3 0:9cb0b3d1b9e6 16 :
cwang365 1:0014879fa94f 17 _sd(mmosi, mmiso, ssck, ccs, name),
cwang365 1:0014879fa94f 18 _spi(mosi, miso, sck),
cwang365 1:0014879fa94f 19 _CS(cs),
cwang365 1:0014879fa94f 20 _RST(rst),
cwang365 1:0014879fa94f 21 _DREQ(dreq),
cwang365 1:0014879fa94f 22 _DCS(dcs),
cwang365 1:0014879fa94f 23 _VOL(vol)
cwang365 1:0014879fa94f 24 {
cwang365 1:0014879fa94f 25
cwang365 1:0014879fa94f 26 }
mpetersen3 0:9cb0b3d1b9e6 27
mpetersen3 0:9cb0b3d1b9e6 28 /*===================================================================
mpetersen3 0:9cb0b3d1b9e6 29 * Functions
mpetersen3 0:9cb0b3d1b9e6 30 *==================================================================*/
cwang365 1:0014879fa94f 31
mpetersen3 0:9cb0b3d1b9e6 32 void VS1002::cs_low(void)
mpetersen3 0:9cb0b3d1b9e6 33 {
cwang365 1:0014879fa94f 34 _CS = 0;
mpetersen3 0:9cb0b3d1b9e6 35 }
mpetersen3 0:9cb0b3d1b9e6 36 void VS1002::cs_high(void)
mpetersen3 0:9cb0b3d1b9e6 37 {
cwang365 1:0014879fa94f 38 _CS = 1;
mpetersen3 0:9cb0b3d1b9e6 39 }
mpetersen3 0:9cb0b3d1b9e6 40 void VS1002::dcs_low(void)
mpetersen3 0:9cb0b3d1b9e6 41 {
mpetersen3 0:9cb0b3d1b9e6 42 _DCS = 0;
mpetersen3 0:9cb0b3d1b9e6 43 }
mpetersen3 0:9cb0b3d1b9e6 44 void VS1002::dcs_high(void)
mpetersen3 0:9cb0b3d1b9e6 45 {
mpetersen3 0:9cb0b3d1b9e6 46 _DCS = 1;
mpetersen3 0:9cb0b3d1b9e6 47 }
mpetersen3 0:9cb0b3d1b9e6 48 void VS1002::sci_en(void) //SCI enable
mpetersen3 0:9cb0b3d1b9e6 49 {
mpetersen3 0:9cb0b3d1b9e6 50 cs_high();
mpetersen3 0:9cb0b3d1b9e6 51 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 52 cs_low();
mpetersen3 0:9cb0b3d1b9e6 53 }
mpetersen3 0:9cb0b3d1b9e6 54 void VS1002::sci_dis(void) //SCI disable
mpetersen3 0:9cb0b3d1b9e6 55 {
mpetersen3 0:9cb0b3d1b9e6 56 cs_high();
mpetersen3 0:9cb0b3d1b9e6 57 }
mpetersen3 0:9cb0b3d1b9e6 58 void VS1002::sdi_en(void) //SDI enable
mpetersen3 0:9cb0b3d1b9e6 59 {
mpetersen3 0:9cb0b3d1b9e6 60 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 61 cs_high();
mpetersen3 0:9cb0b3d1b9e6 62 dcs_low();
mpetersen3 0:9cb0b3d1b9e6 63 }
mpetersen3 0:9cb0b3d1b9e6 64 void VS1002::sdi_dis(void) //SDI disable
mpetersen3 0:9cb0b3d1b9e6 65 {
mpetersen3 0:9cb0b3d1b9e6 66 dcs_high();
mpetersen3 0:9cb0b3d1b9e6 67 }
mpetersen3 0:9cb0b3d1b9e6 68 void VS1002::reset(void) //hardware reset
mpetersen3 0:9cb0b3d1b9e6 69 {
mpetersen3 0:9cb0b3d1b9e6 70 wait(0.01);
mpetersen3 0:9cb0b3d1b9e6 71 _RST = 0;
mpetersen3 0:9cb0b3d1b9e6 72 wait(0.01);
mpetersen3 0:9cb0b3d1b9e6 73 _RST = 1;
mpetersen3 0:9cb0b3d1b9e6 74 wait(0.10);
mpetersen3 0:9cb0b3d1b9e6 75 }
mpetersen3 0:9cb0b3d1b9e6 76 void VS1002::power_down(void) //hardware and software reset
mpetersen3 0:9cb0b3d1b9e6 77 {
mpetersen3 0:9cb0b3d1b9e6 78 cs_low();
mpetersen3 0:9cb0b3d1b9e6 79 reset();
mpetersen3 0:9cb0b3d1b9e6 80 sci_write(0x00, SM_PDOWN);
mpetersen3 0:9cb0b3d1b9e6 81 wait(0.01);
mpetersen3 0:9cb0b3d1b9e6 82 reset();
mpetersen3 0:9cb0b3d1b9e6 83 }
mpetersen3 0:9cb0b3d1b9e6 84 void VS1002::sci_initialise(void)
mpetersen3 0:9cb0b3d1b9e6 85 {
mpetersen3 0:9cb0b3d1b9e6 86 _RST = 1; //no reset
mpetersen3 0:9cb0b3d1b9e6 87 _spi.format(8,0); //spi 8bit interface, steady state low
mpetersen3 0:9cb0b3d1b9e6 88 _spi.frequency(1000000); //rising edge data record, freq. 1Mhz
cwang365 1:0014879fa94f 89
mpetersen3 0:9cb0b3d1b9e6 90 cs_low();
cwang365 1:0014879fa94f 91 for(int i=0; i<4; i++) {
cwang365 1:0014879fa94f 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
cwang365 1:0014879fa94f 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
cwang365 1:0014879fa94f 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
cwang365 1:0014879fa94f 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();
cwang365 1:0014879fa94f 122
mpetersen3 0:9cb0b3d1b9e6 123 while(!_DREQ);
mpetersen3 0:9cb0b3d1b9e6 124 _spi.write(datum);
cwang365 1:0014879fa94f 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
cwang365 1:0014879fa94f 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
cwang365 1:0014879fa94f 138
mpetersen3 0:9cb0b3d1b9e6 139 cs_high(); //enables SDI/disables SCI
cwang365 1:0014879fa94f 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
cwang365 1:0014879fa94f 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();
cwang365 1:0014879fa94f 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 {
cwang365 1:0014879fa94f 175 #ifdef FIXED_VOL
mpetersen3 0:9cb0b3d1b9e6 176 unsigned char volumize = (0 * 255); // FIXED VOL (not support volume input)
cwang365 1:0014879fa94f 177 #else
mpetersen3 0:9cb0b3d1b9e6 178 unsigned char volumize = (_VOL * 255);
cwang365 1:0014879fa94f 179 #endif
mpetersen3 0:9cb0b3d1b9e6 180 while(!_DREQ);
cwang365 1:0014879fa94f 181
mpetersen3 0:9cb0b3d1b9e6 182 unsigned short int attenuation = ((256 * volumize) + volumize);
mpetersen3 0:9cb0b3d1b9e6 183 sci_write(0x0B, attenuation);
cwang365 1:0014879fa94f 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 ======*/
cwang365 1:0014879fa94f 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");
cwang365 1:0014879fa94f 202 if(d != NULL) {
cwang365 1:0014879fa94f 203 while((p = readdir(d)) != NULL) {
cwang365 1:0014879fa94f 204 strcat(list, "*");
cwang365 1:0014879fa94f 205 strcat(list, p->d_name);
cwang365 1:0014879fa94f 206 num_of_files++;
cwang365 1:0014879fa94f 207 }
cwang365 1:0014879fa94f 208 } else {
cwang365 1:0014879fa94f 209 perror("Could not open directory!");
mpetersen3 0:9cb0b3d1b9e6 210 }
mpetersen3 0:9cb0b3d1b9e6 211 strcat(list, "*"); //terminating *
cwang365 1:0014879fa94f 212 if(num_of_files < song_number) {
mpetersen3 0:9cb0b3d1b9e6 213 return;
mpetersen3 0:9cb0b3d1b9e6 214 }
cwang365 1:0014879fa94f 215 while(play != song_number) {
mpetersen3 0:9cb0b3d1b9e6 216 char symbol = list[startplace];
mpetersen3 0:9cb0b3d1b9e6 217 startplace++;
cwang365 1:0014879fa94f 218 if(symbol == 0x2A) { //0x2A = "*"
mpetersen3 0:9cb0b3d1b9e6 219 play++;
cwang365 1:0014879fa94f 220 }
mpetersen3 0:9cb0b3d1b9e6 221 }
mpetersen3 0:9cb0b3d1b9e6 222 play = 0;
cwang365 1:0014879fa94f 223 while(play != (song_number+1)) {
mpetersen3 0:9cb0b3d1b9e6 224 char symbol = list[endplace];
cwang365 1:0014879fa94f 225 endplace++;
cwang365 1:0014879fa94f 226 if(symbol == 0x2A) { //0x2A = "*"
mpetersen3 0:9cb0b3d1b9e6 227 play++;
mpetersen3 0:9cb0b3d1b9e6 228 }
mpetersen3 0:9cb0b3d1b9e6 229 }
mpetersen3 0:9cb0b3d1b9e6 230
mpetersen3 0:9cb0b3d1b9e6 231 strncat(str, &list[startplace], endplace-startplace);
mpetersen3 0:9cb0b3d1b9e6 232 str[(endplace-startplace)+3] = '\0';
mpetersen3 0:9cb0b3d1b9e6 233
cwang365 1:0014879fa94f 234 //printf("list: %s\r\n",list); //debug
mpetersen3 0:9cb0b3d1b9e6 235
mpetersen3 0:9cb0b3d1b9e6 236 /*====== File Transfer ======*/
mpetersen3 0:9cb0b3d1b9e6 237
cwang365 1:0014879fa94f 238 // return if not MP3 file
mpetersen3 0:9cb0b3d1b9e6 239 if (!((strstr(str,"MP3")!=NULL)||(strstr(str,"mp3")!=NULL))) return;
mpetersen3 0:9cb0b3d1b9e6 240 // display filename.mp3 to the lcd screen
mpetersen3 0:9cb0b3d1b9e6 241 lcd.printf("Now Playing: %s\r\n",str);
cwang365 1:0014879fa94f 242
mpetersen3 0:9cb0b3d1b9e6 243 FILE *song;
mpetersen3 0:9cb0b3d1b9e6 244 unsigned char array[512];
cwang365 1:0014879fa94f 245
mpetersen3 0:9cb0b3d1b9e6 246 song = fopen(str, "rb");
cwang365 1:0014879fa94f 247
cwang365 1:0014879fa94f 248 if(!song) {
mpetersen3 0:9cb0b3d1b9e6 249 exit(1);
mpetersen3 0:9cb0b3d1b9e6 250 }
cwang365 1:0014879fa94f 251
cwang365 1:0014879fa94f 252 while((!feof(song))&&!pause1) {
cwang365 1:0014879fa94f 253 fread(&array, 1, 512, song);
cwang365 1:0014879fa94f 254 for(int i=0; i<512; i++) {
mpetersen3 0:9cb0b3d1b9e6 255 #ifndef FS_ONLY
mpetersen3 0:9cb0b3d1b9e6 256 sdi_write(array[i]);
cwang365 1:0014879fa94f 257 // printf(".");
mpetersen3 0:9cb0b3d1b9e6 258 #endif
cwang365 1:0014879fa94f 259 }
mpetersen3 0:9cb0b3d1b9e6 260 #ifndef FS_ONLY
cwang365 1:0014879fa94f 261 volume();
mpetersen3 0:9cb0b3d1b9e6 262 #endif
cwang365 1:0014879fa94f 263 }
cwang365 1:0014879fa94f 264 for(int n=0; n<2048; n++) {
mpetersen3 0:9cb0b3d1b9e6 265 #ifndef FS_ONLY
cwang365 1:0014879fa94f 266 sdi_write(0x00);
mpetersen3 0:9cb0b3d1b9e6 267 #endif
cwang365 1:0014879fa94f 268 }
mpetersen3 0:9cb0b3d1b9e6 269 fclose(song); //close the file
cwang365 1:0014879fa94f 270 lcd.printf("Done Playing: %s\r\n\n",str);
cwang365 1:0014879fa94f 271 lcd.printf(" \n");
mpetersen3 0:9cb0b3d1b9e6 272 }