Rory Hand / Mbed 2 deprecated Wolfson_3_wav

does not work yet. Sound starts but then stops after a few seconds, whole thing hangs. Published so as I can import through mbed CLI.

Dependencies:   mbed sinelookup SDFileSystem_Copy_of_mbed_version I2S

wolfson_3_wav.cpp@1:ec4e2020522c, 2018-10-01 (annotated)

Committer:
roryhand
Date:
Mon Oct 01 19:04:12 2018 +0000
Revision:
1:ec4e2020522c
Parent:
0:004cb0595aa8
Child:
2:05b426733282
version that atill doesnt print ewverything. however a lotr of extraneous stuff has been removed;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
roryhand 0:004cb0595aa8 1
roryhand 0:004cb0595aa8 2 // 24/03/2018 update - I appear to be able to address the device and write something, as I am getting an ACK returned from the i2c write() function.
roryhand 0:004cb0595aa8 3 //however if i use the write function with 4 arguments (as opposed to just 1 argument) then it doesnt work
roryhand 0:004cb0595aa8 4 //only works with the 1 argument version!!!
roryhand 0:004cb0595aa8 5
roryhand 0:004cb0595aa8 6
roryhand 0:004cb0595aa8 7 //THIS VERSION WORKED, CHANGED SOME THINGS, THEN CHANGED THEM BACK. NOW IT NO LONGER WORKS!!!!
roryhand 0:004cb0595aa8 8 #include "mbed.h"
roryhand 0:004cb0595aa8 9 #include "sinelookup.h"
roryhand 0:004cb0595aa8 10 #include "I2S.h"
roryhand 0:004cb0595aa8 11 #define sample_freq 48000
roryhand 0:004cb0595aa8 12 DigitalOut myled(LED1);
roryhand 0:004cb0595aa8 13 DigitalOut led2(LED2);
roryhand 0:004cb0595aa8 14 DigitalOut led3(LED3);
roryhand 0:004cb0595aa8 15 Ticker sampletick;
roryhand 0:004cb0595aa8 16 Timer t;
roryhand 0:004cb0595aa8 17 #include "SDFileSystem.h"
roryhand 0:004cb0595aa8 18 #include "WOLFSON_config.h"
roryhand 0:004cb0595aa8 19 Serial pc(USBTX, USBRX); // tx, rx //FOR DEBUGGING PROGRAM USING GNU SCREEN
roryhand 0:004cb0595aa8 20 DigitalOut cs(p8);
roryhand 0:004cb0595aa8 21 I2S i2s(I2S_TRANSMIT,p5,p6,p7);
roryhand 0:004cb0595aa8 22 I2C i2c(p9, p10);
roryhand 0:004cb0595aa8 23
roryhand 0:004cb0595aa8 24 SDFileSystem sd(p11, p12, p13, p8, "sd"); // the new pinout that i am using
roryhand 0:004cb0595aa8 25
roryhand 0:004cb0595aa8 26 typedef struct uFMT_STRUCT{
roryhand 0:004cb0595aa8 27 short comp_code;
roryhand 0:004cb0595aa8 28 short num_channels;
roryhand 0:004cb0595aa8 29 unsigned sample_rate;
roryhand 0:004cb0595aa8 30 unsigned avg_Bps;
roryhand 0:004cb0595aa8 31 short block_align;
roryhand 0:004cb0595aa8 32 short sig_bps;
roryhand 0:004cb0595aa8 33 } FMT_STRUCT;
roryhand 0:004cb0595aa8 34
roryhand 0:004cb0595aa8 35 typedef struct uDATA_STRUCT {
roryhand 0:004cb0595aa8 36 unsigned subchunk2_ID;
roryhand 0:004cb0595aa8 37 unsigned subchunk2_size;
roryhand 0:004cb0595aa8 38 char * data_buf;
roryhand 0:004cb0595aa8 39 }DATA_STRUCT;
roryhand 0:004cb0595aa8 40 short hello;
roryhand 0:004cb0595aa8 41 int i = 0;
roryhand 0:004cb0595aa8 42 int h = 0;
roryhand 0:004cb0595aa8 43 int bufflen = 1;
roryhand 0:004cb0595aa8 44 int buffer[1];
roryhand 0:004cb0595aa8 45 int AudioFormat, NumChannels, SampleRate, BitsPerSample ;
roryhand 0:004cb0595aa8 46 char *slice_buf;
roryhand 0:004cb0595aa8 47 int *data_sptr;
roryhand 0:004cb0595aa8 48 int newvar;
roryhand 0:004cb0595aa8 49 //long long slice_value;
roryhand 0:004cb0595aa8 50 int slice_value;
roryhand 0:004cb0595aa8 51 FILE *my_wav;
roryhand 0:004cb0595aa8 52 FMT_STRUCT wav_format;
roryhand 0:004cb0595aa8 53 DATA_STRUCT wav_data;
roryhand 0:004cb0595aa8 54
roryhand 0:004cb0595aa8 55 Ticker flipper;
roryhand 0:004cb0595aa8 56 //test
roryhand 0:004cb0595aa8 57 void flip() {
roryhand 0:004cb0595aa8 58 led2 = !led2;
roryhand 0:004cb0595aa8 59 }
roryhand 0:004cb0595aa8 60
roryhand 0:004cb0595aa8 61
roryhand 0:004cb0595aa8 62 void isr()
roryhand 0:004cb0595aa8 63 {
roryhand 0:004cb0595aa8 64
roryhand 0:004cb0595aa8 65 //buffer[0] = (int*)data_sptr;
roryhand 0:004cb0595aa8 66 //buffer[0] = newvar;
roryhand 0:004cb0595aa8 67 //buffer[0] = sine16lookup[i];//>>1;//sine16lookup[i];//scale down volume a bit on amp//how would this scale down the volume a bit??
roryhand 0:004cb0595aa8 68 //buffer[0] = *fp;
roryhand 0:004cb0595aa8 69 //printf("value: %d",data_sptr);
roryhand 0:004cb0595aa8 70 //i2s.write(buffer, 2);//Send next PWM value to amp
roryhand 0:004cb0595aa8 71 }
roryhand 1:ec4e2020522c 72
roryhand 0:004cb0595aa8 73
roryhand 1:ec4e2020522c 74
roryhand 0:004cb0595aa8 75
roryhand 0:004cb0595aa8 76 void wm8731_setup(int chip_addr, int addr, int cmd){
roryhand 0:004cb0595aa8 77 addr = addr << 1;
roryhand 0:004cb0595aa8 78 addr = addr|((cmd >> 8 ))& 0x01;//mess around with order of operations
roryhand 0:004cb0595aa8 79 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 80 i2c.start();
roryhand 0:004cb0595aa8 81 i2c.write( chip_addr );
roryhand 0:004cb0595aa8 82 i2c.write( addr );
roryhand 0:004cb0595aa8 83 i2c.write( cmd );
roryhand 0:004cb0595aa8 84 i2c.stop();
roryhand 0:004cb0595aa8 85 }
roryhand 0:004cb0595aa8 86
roryhand 0:004cb0595aa8 87
roryhand 0:004cb0595aa8 88 void wm8731_config(void){
roryhand 0:004cb0595aa8 89 wm8731_setup( WM8731_ADDRESS, WM8731_REG_RESET, _WM8731_RESET );//1
roryhand 0:004cb0595aa8 90 wm8731_setup( WM8731_ADDRESS, WM8731_REG_LLINE_IN, _WM8731_LEFT_LINEIN );//2
roryhand 0:004cb0595aa8 91 wm8731_setup( WM8731_ADDRESS, WM8731_REG_RLINE_IN, _WM8731_RIGHT_LINEIN );//3
roryhand 0:004cb0595aa8 92 wm8731_setup( WM8731_ADDRESS, WM8731_REG_LHPHONE_OUT, _WM8731_LEFT_HP );//4
roryhand 0:004cb0595aa8 93 wm8731_setup( WM8731_ADDRESS, WM8731_REG_RHPHONE_OUT, _WM8731_RIGHT_HP );//5
roryhand 0:004cb0595aa8 94 wm8731_setup( WM8731_ADDRESS, WM8731_REG_ANALOG_PATH, _WM8731_ANALOGAUDIO );//6
roryhand 0:004cb0595aa8 95 wm8731_setup( WM8731_ADDRESS, WM8731_REG_DIGITAL_PATH, _WM8731_DIGITALAUDIO );//7
roryhand 0:004cb0595aa8 96 wm8731_setup( WM8731_ADDRESS, WM8731_REG_PDOWN_CTRL, _WM8731_POWER );//8
roryhand 0:004cb0595aa8 97 wm8731_setup( WM8731_ADDRESS, WM8731_REG_DIGITAL_IF, _WM8731_DAIF );//9
roryhand 0:004cb0595aa8 98 wm8731_setup( WM8731_ADDRESS, WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING );//10
roryhand 0:004cb0595aa8 99 }
roryhand 0:004cb0595aa8 100
roryhand 0:004cb0595aa8 101 void wm8731_configTEST(void){
roryhand 0:004cb0595aa8 102 int addr = WM8731_REG_RESET;
roryhand 0:004cb0595aa8 103 int cmd = _WM8731_RESET;
roryhand 0:004cb0595aa8 104 addr = addr << 1;
roryhand 0:004cb0595aa8 105 addr = addr|((cmd >> 8 ))& 0x01;//mess around with order of operations
roryhand 0:004cb0595aa8 106 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 107 i2c.start();
roryhand 0:004cb0595aa8 108 i2c.write( WM8731_ADDRESS );
roryhand 0:004cb0595aa8 109 i2c.write( addr );
roryhand 0:004cb0595aa8 110 i2c.write( cmd );
roryhand 0:004cb0595aa8 111 i2c.stop();
roryhand 0:004cb0595aa8 112
roryhand 0:004cb0595aa8 113 addr = WM8731_REG_LLINE_IN;
roryhand 0:004cb0595aa8 114 cmd = _WM8731_LEFT_LINEIN;
roryhand 0:004cb0595aa8 115 addr = addr << 1;
roryhand 0:004cb0595aa8 116 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 117 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 118 i2c.start();
roryhand 0:004cb0595aa8 119 i2c.write( WM8731_ADDRESS );//take Fergus' suggestion and declare these to known values EARLIER in program
roryhand 0:004cb0595aa8 120 i2c.write( addr );
roryhand 0:004cb0595aa8 121 i2c.write( cmd );
roryhand 0:004cb0595aa8 122 i2c.stop();
roryhand 0:004cb0595aa8 123
roryhand 0:004cb0595aa8 124
roryhand 0:004cb0595aa8 125 addr = WM8731_REG_RLINE_IN;
roryhand 0:004cb0595aa8 126 cmd = _WM8731_RIGHT_LINEIN;
roryhand 0:004cb0595aa8 127 addr = addr << 1;
roryhand 0:004cb0595aa8 128 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 129 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 130 i2c.start();
roryhand 0:004cb0595aa8 131 i2c.write( WM8731_ADDRESS );//take Fergus' suggestion and declare these to known values EARLIER in program
roryhand 0:004cb0595aa8 132 i2c.write( addr );
roryhand 0:004cb0595aa8 133 i2c.write( cmd );
roryhand 0:004cb0595aa8 134 i2c.stop();
roryhand 0:004cb0595aa8 135
roryhand 0:004cb0595aa8 136
roryhand 0:004cb0595aa8 137 //4
roryhand 0:004cb0595aa8 138 addr = WM8731_REG_LHPHONE_OUT;
roryhand 0:004cb0595aa8 139 cmd = _WM8731_LEFT_HP;
roryhand 0:004cb0595aa8 140 addr = addr << 1;
roryhand 0:004cb0595aa8 141 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 142 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 143 i2c.start();
roryhand 0:004cb0595aa8 144 i2c.write( WM8731_ADDRESS );
roryhand 0:004cb0595aa8 145 i2c.write( addr );//WM8731_REG_LHPHONE_OUT, _WM8731_LEFT_HP
roryhand 0:004cb0595aa8 146 i2c.write(cmd);
roryhand 0:004cb0595aa8 147 i2c.stop();
roryhand 0:004cb0595aa8 148
roryhand 0:004cb0595aa8 149 //5
roryhand 0:004cb0595aa8 150 addr = WM8731_REG_RHPHONE_OUT;
roryhand 0:004cb0595aa8 151 cmd = _WM8731_RIGHT_HP;
roryhand 0:004cb0595aa8 152 addr = addr << 1;
roryhand 0:004cb0595aa8 153 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 154 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 155 i2c.start();
roryhand 0:004cb0595aa8 156 i2c.write( WM8731_ADDRESS );//WM8731_REG_RHPHONE_OUT, _WM8731_RIGHT_HP
roryhand 0:004cb0595aa8 157 i2c.write( addr );
roryhand 0:004cb0595aa8 158 i2c.write( cmd );
roryhand 0:004cb0595aa8 159 i2c.stop();
roryhand 0:004cb0595aa8 160
roryhand 0:004cb0595aa8 161
roryhand 0:004cb0595aa8 162 //6
roryhand 0:004cb0595aa8 163 addr = WM8731_REG_ANALOG_PATH;
roryhand 0:004cb0595aa8 164 cmd = _WM8731_ANALOGAUDIO;
roryhand 0:004cb0595aa8 165 addr = addr << 1;
roryhand 0:004cb0595aa8 166 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 167 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 168 i2c.start();
roryhand 0:004cb0595aa8 169 i2c.write( WM8731_ADDRESS );//WM8731_REG_ANALOG_PATH, _WM8731_ANALOGAUDIO
roryhand 0:004cb0595aa8 170 i2c.write( addr );
roryhand 0:004cb0595aa8 171 i2c.write( cmd );
roryhand 0:004cb0595aa8 172 i2c.stop();
roryhand 0:004cb0595aa8 173
roryhand 0:004cb0595aa8 174 //7
roryhand 0:004cb0595aa8 175 addr = WM8731_REG_DIGITAL_PATH;
roryhand 0:004cb0595aa8 176 cmd = _WM8731_DIGITALAUDIO;
roryhand 0:004cb0595aa8 177 addr = addr << 1;
roryhand 0:004cb0595aa8 178 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 179 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 180 i2c.start();
roryhand 0:004cb0595aa8 181 i2c.write( WM8731_ADDRESS );//WM8731_REG_DIGITAL_PATH, _WM8731_DIGITALAUDIO
roryhand 0:004cb0595aa8 182 i2c.write( addr );
roryhand 0:004cb0595aa8 183 i2c.write( cmd );
roryhand 0:004cb0595aa8 184 i2c.stop();
roryhand 0:004cb0595aa8 185
roryhand 0:004cb0595aa8 186 //8
roryhand 0:004cb0595aa8 187 addr = WM8731_REG_PDOWN_CTRL;
roryhand 0:004cb0595aa8 188 cmd = _WM8731_POWER;
roryhand 0:004cb0595aa8 189 addr = addr << 1;
roryhand 0:004cb0595aa8 190 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 191 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 192 i2c.start();
roryhand 0:004cb0595aa8 193 i2c.write( WM8731_ADDRESS );//WM8731_REG_PDOWN_CTRL, _WM8731_POWER)
roryhand 0:004cb0595aa8 194 i2c.write( addr );
roryhand 0:004cb0595aa8 195 i2c.write( cmd );
roryhand 0:004cb0595aa8 196 i2c.stop();
roryhand 0:004cb0595aa8 197
roryhand 0:004cb0595aa8 198
roryhand 0:004cb0595aa8 199 //9
roryhand 0:004cb0595aa8 200 addr = WM8731_REG_DIGITAL_IF;
roryhand 0:004cb0595aa8 201 cmd = _WM8731_DAIF;
roryhand 0:004cb0595aa8 202 addr = addr << 1;
roryhand 0:004cb0595aa8 203 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 204 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 205 i2c.start();
roryhand 0:004cb0595aa8 206 i2c.write( WM8731_ADDRESS );
roryhand 0:004cb0595aa8 207 i2c.write( addr );//WM8731_REG_DIGITAL_IF, _WM8731_DAIF
roryhand 0:004cb0595aa8 208 i2c.write( cmd );
roryhand 0:004cb0595aa8 209 i2c.stop();
roryhand 0:004cb0595aa8 210
roryhand 0:004cb0595aa8 211
roryhand 0:004cb0595aa8 212 //10
roryhand 0:004cb0595aa8 213 addr = WM8731_REG_SAMPLING_CTRL;
roryhand 0:004cb0595aa8 214 cmd = _WM8731_SAMPLING;
roryhand 0:004cb0595aa8 215 addr = addr << 1;
roryhand 0:004cb0595aa8 216 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 217 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 218 i2c.start();
roryhand 0:004cb0595aa8 219 i2c.write( WM8731_ADDRESS );//WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING
roryhand 0:004cb0595aa8 220 i2c.write( addr );
roryhand 0:004cb0595aa8 221 i2c.write( cmd );
roryhand 0:004cb0595aa8 222 i2c.stop();
roryhand 0:004cb0595aa8 223
roryhand 0:004cb0595aa8 224
roryhand 0:004cb0595aa8 225
roryhand 0:004cb0595aa8 226
roryhand 0:004cb0595aa8 227 //11
roryhand 0:004cb0595aa8 228 addr = WM8731_REG_ACTIVE_CTRL;
roryhand 0:004cb0595aa8 229 cmd = _WM8731_ACTIVATE;
roryhand 0:004cb0595aa8 230 addr = addr << 1;
roryhand 0:004cb0595aa8 231 addr = addr|((cmd >> 8 )) & 0x01;
roryhand 0:004cb0595aa8 232 cmd = cmd&0xFF;
roryhand 0:004cb0595aa8 233 i2c.start();
roryhand 0:004cb0595aa8 234 i2c.write( WM8731_ADDRESS );//WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING
roryhand 0:004cb0595aa8 235 i2c.write( addr );
roryhand 0:004cb0595aa8 236 i2c.write( cmd );//there is also a deactive version!!
roryhand 0:004cb0595aa8 237 i2c.stop();
roryhand 0:004cb0595aa8 238
roryhand 0:004cb0595aa8 239
roryhand 0:004cb0595aa8 240
roryhand 0:004cb0595aa8 241 }
roryhand 0:004cb0595aa8 242
roryhand 0:004cb0595aa8 243 int main() {
roryhand 0:004cb0595aa8 244 FMT_STRUCT wav_format;
roryhand 0:004cb0595aa8 245 char data[2];
roryhand 0:004cb0595aa8 246 pc.printf("Beginning of program\n");
roryhand 0:004cb0595aa8 247 data[0] = 0x0F;
roryhand 0:004cb0595aa8 248 data[1] = 0x00;
roryhand 0:004cb0595aa8 249 FILE *my_wav;
roryhand 0:004cb0595aa8 250 //my_wav = fopen("/sd/mydir/gp40.wav", "rb");//i think that it is "w" for write, "r" for read.
roryhand 0:004cb0595aa8 251 my_wav = fopen("/sd/mydir/gp40_48K.wav", "rb");//i think that it is "w" for write, "r" for read.
roryhand 0:004cb0595aa8 252 fseek(my_wav, 20, SEEK_SET); // set pointer to byte 20
roryhand 0:004cb0595aa8 253 fread(&AudioFormat, 2, 1, my_wav); // check file is PCM
roryhand 0:004cb0595aa8 254 if (AudioFormat==0x01) {
roryhand 0:004cb0595aa8 255 printf("Wav file is PCM data\n\r");
roryhand 0:004cb0595aa8 256 }
roryhand 0:004cb0595aa8 257 else {
roryhand 0:004cb0595aa8 258 printf("Wav file is not PCM data\n\r");
roryhand 0:004cb0595aa8 259 }
roryhand 0:004cb0595aa8 260
roryhand 0:004cb0595aa8 261 fseek (my_wav,20,SEEK_SET);
roryhand 0:004cb0595aa8 262 fread(&wav_format,sizeof(wav_format),1,my_wav);
roryhand 0:004cb0595aa8 263 printf("%d block align\n",wav_format.block_align);
roryhand 0:004cb0595aa8 264 printf(" %d channels\n",wav_format.num_channels);
roryhand 0:004cb0595aa8 265
roryhand 0:004cb0595aa8 266
roryhand 0:004cb0595aa8 267 fseek(my_wav, 36, SEEK_SET);
roryhand 0:004cb0595aa8 268 fread(&wav_data.subchunk2_ID,4,1,my_wav);
roryhand 0:004cb0595aa8 269 fseek(my_wav, 40, SEEK_SET);
roryhand 0:004cb0595aa8 270 fread(&wav_data.subchunk2_size,4,1,my_wav);
roryhand 0:004cb0595aa8 271 printf("DATA chunck\n");
roryhand 0:004cb0595aa8 272 printf(" %d subchunk 2 ID\n",wav_data.subchunk2_ID);
roryhand 0:004cb0595aa8 273 printf(" %d subchunk 2 size\n",wav_data.subchunk2_size);
roryhand 0:004cb0595aa8 274
roryhand 0:004cb0595aa8 275
roryhand 0:004cb0595aa8 276
roryhand 0:004cb0595aa8 277
roryhand 0:004cb0595aa8 278
roryhand 0:004cb0595aa8 279
roryhand 0:004cb0595aa8 280 i2c.frequency(100000);
roryhand 0:004cb0595aa8 281 long j = 0;
roryhand 0:004cb0595aa8 282
roryhand 0:004cb0595aa8 283 printf("set up the codec\n\r");
roryhand 0:004cb0595aa8 284 wm8731_configTEST();
roryhand 0:004cb0595aa8 285 //i2s audio data transfer code??
roryhand 0:004cb0595aa8 286 i2s.stereomono(I2S_STEREO);
roryhand 0:004cb0595aa8 287 i2s.masterslave(I2S_MASTER);//MASTER definitely works!
roryhand 0:004cb0595aa8 288 i2s.frequency(sample_freq);
roryhand 0:004cb0595aa8 289 int yes = i2s.setup_ok();
roryhand 0:004cb0595aa8 290 pc.printf("Setup went ok?: %d\n", yes);//0 = ack, 1 = Nack*/
roryhand 0:004cb0595aa8 291 printf("can we get to this point? 1\n\r");
roryhand 0:004cb0595aa8 292 led3 = 1;
roryhand 0:004cb0595aa8 293 //myled = 1;
roryhand 0:004cb0595aa8 294 led2 = 1;
roryhand 0:004cb0595aa8 295 printf("can we get to this point? 2\n\r");
roryhand 0:004cb0595aa8 296
roryhand 0:004cb0595aa8 297 myled = 1;
roryhand 0:004cb0595aa8 298 i2s.start();
roryhand 0:004cb0595aa8 299 //while (1) {
roryhand 0:004cb0595aa8 300 fread(&wav_format,sizeof(wav_format),1,my_wav);
roryhand 0:004cb0595aa8 301 printf("wav_format %d\n\r",wav_format);
roryhand 1:ec4e2020522c 302
roryhand 0:004cb0595aa8 303
roryhand 0:004cb0595aa8 304 fseek(my_wav,20,SEEK_SET);
roryhand 0:004cb0595aa8 305 fread(&wav_format,sizeof(wav_format),1,my_wav);
roryhand 0:004cb0595aa8 306 fseek(my_wav,36,SEEK_SET);
roryhand 0:004cb0595aa8 307 fread(&wav_data,sizeof(wav_data),1,my_wav);
roryhand 0:004cb0595aa8 308 num_slices = wav_data.subchunk2_size/wav_format.block_align;
roryhand 0:004cb0595aa8 309 printf("wav_data.subchunk2_size: %d\n\r",wav_data.subchunk2_size);
roryhand 0:004cb0595aa8 310 printf("wav_format.block_align: %d\n\r",wav_format.block_align);
roryhand 0:004cb0595aa8 311 printf("num_slices: %d\n\r",num_slices);
roryhand 0:004cb0595aa8 312 printf("num_slices*wav_format.block_align %d\n\r",num_slices*wav_format.block_align);
roryhand 0:004cb0595aa8 313 printf("wav_format.num_channels*wav_format.sig_bps/8: %d\n\r",wav_format.num_channels*wav_format.sig_bps/8);
roryhand 0:004cb0595aa8 314 printf("chunk_size - sizeof(wav_format) %d\n\r",wav_data.subchunk2_size-sizeof(wav_format));
roryhand 0:004cb0595aa8 315 printf("sizeof(wav_format): %d\n\r",sizeof(wav_format));
roryhand 0:004cb0595aa8 316 //sampletick.attach(&isr,1/96000);
roryhand 0:004cb0595aa8 317 //while(!feof(my_wav)){
roryhand 0:004cb0595aa8 318 //while(1){
roryhand 0:004cb0595aa8 319 //if (wav_data.subchunk2_size > sizeof(wav_format)){
roryhand 0:004cb0595aa8 320 //fseek(my_wav,wav_data.subchunk2_size-sizeof(wav_format),SEEK_CUR);
roryhand 0:004cb0595aa8 321 /*if(wav_data.subchunk2_size > (num_slices*wav_format.block_align)){
roryhand 0:004cb0595aa8 322 fseek(my_wav,wav_data.subchunk2_size - (num_slices*wav_format.block_align),SEEK_CUR);
roryhand 0:004cb0595aa8 323 printf("chunk_size - sizeof(wav_format) %d\n\r",wav_data.subchunk2_size-sizeof(wav_format));
roryhand 0:004cb0595aa8 324 printf("sizeof(wav_format): %d\n\r",sizeof(wav_format));
roryhand 0:004cb0595aa8 325 }
roryhand 0:004cb0595aa8 326 else {
roryhand 0:004cb0595aa8 327
roryhand 0:004cb0595aa8 328 break;
roryhand 0:004cb0595aa8 329 }*/
roryhand 0:004cb0595aa8 330
roryhand 0:004cb0595aa8 331 slice_buf=(char *)malloc(wav_format.block_align);
roryhand 0:004cb0595aa8 332 for(int slice = 0; slice<num_slices; slice+=1)
roryhand 0:004cb0595aa8 333 {
roryhand 0:004cb0595aa8 334 fread(&slice_buf,wav_format.block_align,1,my_wav);
roryhand 0:004cb0595aa8 335 data_sptr=(int *)slice_buf;
roryhand 0:004cb0595aa8 336 //printf("data_sptr:%d\n\r",data_sptr);
roryhand 0:004cb0595aa8 337 //printf("wav_format.num_channels: %d\n\r",wav_format.num_channels);
roryhand 0:004cb0595aa8 338 //}
roryhand 0:004cb0595aa8 339 slice_value = 0;
roryhand 0:004cb0595aa8 340
roryhand 0:004cb0595aa8 341 //for (int channel=0;channel<wav_format.num_channels;channel++)
roryhand 0:004cb0595aa8 342 // {
roryhand 0:004cb0595aa8 343 int channel = 0;
roryhand 0:004cb0595aa8 344 //printf("channel: %d\n\r",channel);
roryhand 0:004cb0595aa8 345 //printf("wav_format.num_channels: %d\n\r",wav_format.num_channels);
roryhand 0:004cb0595aa8 346 int var = 1;//data_sptr[channel];
roryhand 0:004cb0595aa8 347 printf("var: %d\n\r", var);
roryhand 0:004cb0595aa8 348 //slice_value+=data_sptr[channel];
roryhand 0:004cb0595aa8 349 //printf("slice_value %d\n\r",slice_value);
roryhand 0:004cb0595aa8 350 //printf("data_sptr[channel] %d\n\r",data_sptr[channel] );
roryhand 0:004cb0595aa8 351 //slice_value = 21;//
roryhand 0:004cb0595aa8 352 //malloc(sizeof(data_sptr[channel]));
roryhand 0:004cb0595aa8 353 //printf("SIZEOF DATASPTR %d:\n\r",sizeof(data_sptr[channel]));
roryhand 0:004cb0595aa8 354 //newvar = data_sptr[channel];
roryhand 0:004cb0595aa8 355 //printf("newvar %d\n\r",newvar);
roryhand 0:004cb0595aa8 356 channel = channel + 1;
roryhand 0:004cb0595aa8 357 newvar = data_sptr[channel];
roryhand 0:004cb0595aa8 358 //printf("newvar %d\n\r",newvar);
roryhand 0:004cb0595aa8 359 //printf("channel: %d\n\r",channel);
roryhand 0:004cb0595aa8 360 //slice_value+=data_sptr[channel];
roryhand 0:004cb0595aa8 361
roryhand 0:004cb0595aa8 362 //printf("did it get to this point\n\r");
roryhand 0:004cb0595aa8 363
roryhand 0:004cb0595aa8 364
roryhand 0:004cb0595aa8 365 //printf("channel: %d data %d\n\r",channel,data_sptr[channel]);
roryhand 0:004cb0595aa8 366 //printf("slice_value: %d\n\r",slice_value);
roryhand 0:004cb0595aa8 367 //}
roryhand 0:004cb0595aa8 368
roryhand 0:004cb0595aa8 369 }
roryhand 0:004cb0595aa8 370
roryhand 1:ec4e2020522c 371
roryhand 0:004cb0595aa8 372 sampletick.detach();
roryhand 0:004cb0595aa8 373 i2s.stop();
roryhand 0:004cb0595aa8 374
roryhand 0:004cb0595aa8 375 fclose(my_wav);
roryhand 0:004cb0595aa8 376 printf("File is now closed.");
roryhand 0:004cb0595aa8 377 return 0;
roryhand 0:004cb0595aa8 378 }
roryhand 0:004cb0595aa8 379