Diff: wolfson_3_wav.cpp

Revision:

1:ec4e2020522c

Parent:

0:004cb0595aa8

Child:

2:05b426733282

--- a/wolfson_3_wav.cpp	Mon Oct 01 18:58:35 2018 +0000
+++ b/wolfson_3_wav.cpp	Mon Oct 01 19:04:12 2018 +0000
@@ -69,24 +69,9 @@
     //printf("value: %d",data_sptr);
     //i2s.write(buffer, 2);//Send next PWM value to amp
     }
-    //i++;
-    //int hi =i2s.read(buffer[0], bufflen);
-    //i2s.stop();
-    //pc.printf("%d", buffer[0]);
+
     
-    //pc.printf("Playing Sound!!\n");//0  = ack, 1 = Nack
-    //if (i>= SINE16LENGTH) {//SINE16LENGTH) {
-    /*if (i>= wav_format.block_align){
-        i = 0;
-        i2s.stop();
-        sampletick.detach();
-    
-        //pc.printf("Sound ended!!");
-        myled = 0;
-        CE
-    }
-    
-}*/
+
 
 void wm8731_setup(int chip_addr, int addr, int cmd){
     addr = addr << 1;
@@ -288,186 +273,13 @@
     printf("  %d subchunk 2 size\n",wav_data.subchunk2_size);
     
     
-    fseek(my_wav,36,SEEK_SET);
-    fread(&wav_format.sig_bps,2,1,my_wav);
-    printf("%d bits per sample\n",wav_format.sig_bps);//check how many bits per sample we have
-    
-    
-    
 
     
 
 
     i2c.frequency(100000);
     long j = 0;
-    /*while(j<1000){
-        j=j+1;
-    wm8731_configTEST();
-    }*/
     
-        /*while(j<1000){
-        j=j+1;
-    int addr = WM8731_REG_RESET;
-    int cmd = _WM8731_RESET;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 ))& 0x01;//mess around with order of operations
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );
-    i2c.write( addr  );
-    i2c.write( cmd );
-    //wait(1);
-    i2c.stop();
-    //}//am receiving ack = 0 i.e. an anknowledgment!!! when I loop round this section. 14/06/18
-    //}
-    //i2c.stop();
-    //while(1){}
-    //wait(3);
-    ///try not using the int ack stuff
-    
-    //pc.printf("Decimals1: %d", ack1);//0  = ack, 1 = Nack
-    //int ack12 = 
-    //pc.printf("Decimals12: %d", ack12);//0  = ack, 1 = Nack
-    //int ack13 = i2c.write( cmd );
-    //pc.printf("Decimals13: %d", ack13);//0  = ack, 1 = Nack
-    //i2c.stop();
-    
-    //2
-          
-    //while(1){
-     //   }
-    
-    
-    //while(1){
-    addr = WM8731_REG_LLINE_IN;
-    cmd = _WM8731_LEFT_LINEIN;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//take Fergus' suggestion and declare these to known values EARLIER in program
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    
-        addr = WM8731_REG_RLINE_IN;
-    cmd = _WM8731_RIGHT_LINEIN;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//take Fergus' suggestion and declare these to known values EARLIER in program
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-    
-       
-    //4
-    addr = WM8731_REG_LHPHONE_OUT;
-    cmd = _WM8731_LEFT_HP;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );
-    i2c.write( addr );//WM8731_REG_LHPHONE_OUT, _WM8731_LEFT_HP   
-    i2c.write(cmd);   
-    i2c.stop();
-      
-    //5
-    addr = WM8731_REG_RHPHONE_OUT;
-    cmd = _WM8731_RIGHT_HP;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_RHPHONE_OUT, _WM8731_RIGHT_HP 
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-  
-    
-    //6
-    addr = WM8731_REG_ANALOG_PATH;
-    cmd = _WM8731_ANALOGAUDIO;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_ANALOG_PATH, _WM8731_ANALOGAUDIO
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    //7
-    addr = WM8731_REG_DIGITAL_PATH;
-    cmd = _WM8731_DIGITALAUDIO;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_DIGITAL_PATH, _WM8731_DIGITALAUDIO
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    //8
-    addr = WM8731_REG_PDOWN_CTRL;
-    cmd = _WM8731_POWER;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_PDOWN_CTRL, _WM8731_POWER)
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    
-    //9
-    addr = WM8731_REG_DIGITAL_IF;
-    cmd = _WM8731_DAIF;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );
-    i2c.write( addr  );//WM8731_REG_DIGITAL_IF, _WM8731_DAIF
-    i2c.write( cmd );
-    i2c.stop();
-
-   
-    //10
-    addr = WM8731_REG_SAMPLING_CTRL;
-    cmd = _WM8731_SAMPLING;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    
-   
-    
-    //11
-    addr = WM8731_REG_ACTIVE_CTRL;
-    cmd = _WM8731_ACTIVATE;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;    
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING
-    i2c.write( addr  );
-    i2c.write( cmd );//there is also a deactive version!!
-    /*(from data sheet) - To prevent any comms problems from arising across te DAI the audio interface (AI) is disabled
-    (tristate with weak 100k pulldown).  ONce the audio interface and the sampling scontrol has been programmed its 
-    activated by setting the ACTIVE bit under software control.*/
-    //i2c.stop();
-    //}
     printf("set up the codec\n\r");
     wm8731_configTEST();
     //i2s audio data transfer code??
@@ -482,28 +294,12 @@
     led2 = 1;
     printf("can we get to this point?   2\n\r");
 
-    /*fseek(my_wav, 40, SEEK_SET);
-    fread(&wav_data.subchunk2_size,4,1,my_wav);
-    printf("subchunk2 size: %d",wav_data.subchunk2_size);*/
-    int num_slices = wav_data.subchunk2_size/wav_format.block_align;
-    printf("block align is:%d\n\r",wav_format.block_align);
-    int a = 44;
-    //sampletick.attach(&isr,1.0/sample_freq);
-
     myled = 1;
     i2s.start();
     //while (1) {
     fread(&wav_format,sizeof(wav_format),1,my_wav);
     printf("wav_format %d\n\r",wav_format);
-    //sampletick.attach(&isr,1/96000);
-    /*if (wav_data.subchunk2_size > sizeof(wav_format)){
-          fseek(my_wav,wav_data.subchunk2_size-sizeof(wav_format),SEEK_CUR);
-          printf("chunk_size - sizeof(wav_format) %d",wav_data.subchunk2_size-sizeof(wav_format));
-        }
-        else {
-            
-            break;
-            }*/
+
             
     fseek(my_wav,20,SEEK_SET);
     fread(&wav_format,sizeof(wav_format),1,my_wav);
@@ -535,12 +331,7 @@
     slice_buf=(char *)malloc(wav_format.block_align);
     for(int slice = 0; slice<num_slices; slice+=1)
     {       
-        //printf("slice: %d\n\r",slice);
       fread(&slice_buf,wav_format.block_align,1,my_wav);
-      //int filePositionIndicator=ftell(my_wav);
-      //printf("filePositionIndicator: %d\n\r",filePositionIndicator);
-      //printf("slice: %d\n\r",slice);
-      //printf("num_slices: %d\n\r",num_slices);
       data_sptr=(int *)slice_buf;  
       //printf("data_sptr:%d\n\r",data_sptr);
       //printf("wav_format.num_channels: %d\n\r",wav_format.num_channels);
@@ -577,12 +368,7 @@
       
      }
       
-      
-      
-      //a = a + wav_format.block_align;
-    //} 
-//}
-    //}
+    
         sampletick.detach();
     i2s.stop();
     
@@ -590,183 +376,4 @@
     printf("File is now closed.");
     return 0;
     }
-    /*while(1){
-    sampletick.attach(&isr,1.0/sample_freq);
-    led3 = !led3;
-    wait(1.0);
-    
-    //COMMENTS BELOW ARE OUT OF DATE
-    //The code above is IDENTICAL!!! to code run in TickerHello World.
-    //However, the 2nd led doesn't even light up and start "flipping" until led 1 has flipped....
-    //Looks as if it cannot attach.
-    //sampletick.attach_us(&isr, 20.833);//try using attach_us instead.
-    //Not sure why the osther guy just didn't use this in the first place
-    //sampletick.attach(&isr,1/sample_freq);
-    //if myled is assigned AFTER the tick is attached, it never switches on if sound does not come on.
-    }
-    //sampletick.attach(&isr, 2.0);
-    }
-    */
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    
-    //old LEGACY code!!!
-    /*int addr = WM8731_REG_RESET;
-    int cmd = _WM8731_RESET;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 ))& 0x01;//mess around with order of operations
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-
-    addr = WM8731_REG_LLINE_IN;
-    cmd = _WM8731_LEFT_LINEIN;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//take Fergus' suggestion and declare these to known values EARLIER in program
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    
-    addr = WM8731_REG_RLINE_IN;
-    cmd = _WM8731_RIGHT_LINEIN;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//take Fergus' suggestion and declare these to known values EARLIER in program
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-    
-       
-    //4
-    addr = WM8731_REG_LHPHONE_OUT;
-    cmd = _WM8731_LEFT_HP;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );
-    i2c.write( addr );//WM8731_REG_LHPHONE_OUT, _WM8731_LEFT_HP   
-    i2c.write(cmd);   
-    i2c.stop();
-      
-    //5
-    addr = WM8731_REG_RHPHONE_OUT;
-    cmd = _WM8731_RIGHT_HP;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_RHPHONE_OUT, _WM8731_RIGHT_HP 
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-  
-    
-    //6
-    addr = WM8731_REG_ANALOG_PATH;
-    cmd = _WM8731_ANALOGAUDIO;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_ANALOG_PATH, _WM8731_ANALOGAUDIO
-    i2c.write( addr );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    //7
-    addr = WM8731_REG_DIGITAL_PATH;
-    cmd = _WM8731_DIGITALAUDIO;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_DIGITAL_PATH, _WM8731_DIGITALAUDIO
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    //8
-    addr = WM8731_REG_PDOWN_CTRL;
-    cmd = _WM8731_POWER;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_PDOWN_CTRL, _WM8731_POWER)
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    
-    //9
-    addr = WM8731_REG_DIGITAL_IF;
-    cmd = _WM8731_DAIF;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );
-    i2c.write( addr  );//WM8731_REG_DIGITAL_IF, _WM8731_DAIF
-    i2c.write( cmd );
-    i2c.stop();
-
-   
-    //10
-    addr = WM8731_REG_SAMPLING_CTRL;
-    cmd = _WM8731_SAMPLING;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING
-    i2c.write( addr  );
-    i2c.write( cmd );
-    i2c.stop();
-    
-    
-   
-    
-    //11
-    addr = WM8731_REG_ACTIVE_CTRL;
-    cmd = _WM8731_ACTIVATE;
-    addr = addr << 1;
-    addr = addr|((cmd >> 8 )) & 0x01;
-    cmd = cmd&0xFF;    
-    i2c.start();
-    i2c.write( WM8731_ADDRESS );//WM8731_REG_SAMPLING_CTRL, _WM8731_SAMPLING
-    i2c.write( addr  );
-    i2c.write( cmd );//there is also a deactive version!!
-    i2c.stop();*/
-
     
\ No newline at end of file