Rory Hand
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
Revision 8:40f37287589a, committed 2018-10-28
- Comitter:
- roryhand
- Date:
- Sun Oct 28 22:01:16 2018 +0000
- Parent:
- 7:fb47ff047ac7
- Child:
- 9:4d6b9a554550
- Child:
- 10:5048aebc394e
- Commit message:
- latest revision
Changed in this revision
| WOLFSON_config.h | Show annotated file Show diff for this revision Revisions of this file |
| wolfson_3_wav.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/WOLFSON_config.h Sun Oct 28 21:31:58 2018 +0000 +++ b/WOLFSON_config.h Sun Oct 28 22:01:16 2018 +0000 @@ -33,9 +33,9 @@ const int _WM8731_DIGITALAUDIO = 0X00; //11011 const int _WM8731_POWER = 0X00; // DISABLE POWER DOWN const int _WM8731_DAIF = 0X02; // ENABLE SLAVE MODE, 16BIT DATA AND I2S DATA -const int _WM8731_SAMPLING = 0X00; // 48000HZ,12.288MHz oscillator. +//const int _WM8731_SAMPLING = 0X00; // 48000HZ,12.288MHz oscillator. //const int _WM8731_SAMPLING = 0X2E; // 8000HZ,12.288MHz oscillator. -//const int _WM8731_SAMPLING = 0X18; // 8000HZ,12.288MHz oscillator. +const int _WM8731_SAMPLING = 0X18; // 8000HZ,12.288MHz oscillator. const int _WM8731_ACTIVATE = 0X01; // MODULE IS ON const int _WM8731_DEACTIVATE = 0X00; // MODULE IS OFF const int _WM8731_RESET = 0X00; // RESET VALUE
--- a/wolfson_3_wav.cpp Sun Oct 28 21:31:58 2018 +0000
+++ b/wolfson_3_wav.cpp Sun Oct 28 22:01:16 2018 +0000
@@ -8,7 +8,7 @@
#include "mbed.h"
#include "sinelookup.h"
#include "I2S.h"
-#define sample_freq 48000
+#define sample_freq 8000
DigitalOut myled(LED1);
DigitalOut led2(LED2);
DigitalOut led3(LED3);
@@ -52,8 +52,9 @@
int newvar;
long slice, num_slices;
int verbosity = 0;
+int verbosity2 = 0;
int interrupt_condition = 1;
-int sampling_freq = 48000;
+int sampling_freq = 8000;
short Buffer1[8];
short Buffer2[8];
short place_hold1 = 0;
@@ -107,7 +108,7 @@
flag2 = 0;
flag3 = 1;
}
- if(verbosity == 1)
+ if(verbosity2 == 1)
{
printf("value Buffer1: %d\n\r",value[0]);
}
@@ -126,7 +127,7 @@
flag2 = 1;
flag3 = 1;
}
- if(verbosity == 1)
+ if(verbosity2 == 1)
{
printf("value Buffer2: %d\n\r",value[0]);
}
@@ -311,10 +312,10 @@
data[1] = 0x00;
FILE *my_wav;
//my_wav = fopen("/sd/mydir/gp40.wav", "rb");//i think that it is "w" for write, "r" for read.
- my_wav = fopen("/sd/mydir/gp40_48K.wav", "rb");//i think that it is "w" for write, "r" for read.
+ //my_wav = fopen("/sd/mydir/gp40_48K.wav", "rb");//i think that it is "w" for write, "r" for read.
//my_wav = fopen("/sd/mydir/gp40_48K_quieter.wav", "rb");//i think that it is "w" for write, "r" for read.
//my_wav = fopen("/sd/mydir/gp40_8K.wav","rb");
- //my_wav = fopen("/sd/mydir/gp40_8K_2018.wav","rb");
+ my_wav = fopen("/sd/mydir/gp40_8K_2018.wav","rb");
//my_wav = fopen("/sd/mydir/emd_645.wav", "rb");
fseek(my_wav, 20, SEEK_SET); // set pointer to byte 20
fread(&AudioFormat, 2, 1, my_wav); // check file is PCM
@@ -338,15 +339,8 @@
printf("DATA chunck\n");
printf(" %d subchunk 2 ID\n",wav_data.subchunk2_ID);
printf(" %d subchunk 2 size\n",wav_data.subchunk2_size);
-
-
-
-
-
-
i2c.frequency(100000);
long j = 0;
-
printf("set up the codec\n\r");
while(j <1000){
wm8731_configTEST();
@@ -369,8 +363,7 @@
//while (1) {
fread(&wav_format,sizeof(wav_format),1,my_wav);
printf("wav_format %d\n\r",wav_format);
-
-
+
fseek(my_wav,20,SEEK_SET);
fread(&wav_format,sizeof(wav_format),1,my_wav);
fseek(my_wav,36,SEEK_SET);
@@ -389,8 +382,9 @@
sampletick.attach(&isr,1.0/16000); //1/16000
}
slice_buf=(char *)malloc(wav_format.block_align);
+ slice = 0;
while(1){
- slice = 0;
+
while(flag3 == 1)
{
//for (slice=0;slice<num_slices;slice+=1)