Rory Hand / Mbed 2 deprecated NotchingDemo

old demo that i want to try in mbed studio

Dependencies:   mbed SDFileSystem_Copy_of_mbed_version I2S

Files at this revision

API Documentation at this revision

Revision 31:0f8c3adf09c3, committed 2019-05-26

Comitter:
roryhand
Date:
Sun May 26 20:58:26 2019 +0000
Parent:
30:4a8e80b243c4
Child:
32:6ee488c97dcc
Commit message:
WIP - Have now discovered that the opening and closing may only take 5us and 13us respectively. Does this mean we can solve our overall problem?

Changed in this revision

NotchingDemo.cpp Show annotated file Show diff for this revision Revisions of this file 
--- a/NotchingDemo.cpp	Sun May 26 20:41:05 2019 +0000
+++ b/NotchingDemo.cpp	Sun May 26 20:58:26 2019 +0000
@@ -392,17 +392,8 @@
 
 
 
-    timer_open.reset();
-    timer_open.start();    
-    StartupWav = fopen("/sd/mydir/Startup.wav","rb");
-    timer_open.reset();
-    printf("It took %d useconds to open file\n\r",timer_open.read_us());
-    //const char* folder2 = folder.c_str();
-    timer_open.reset();
-    timer_open.start();
-    fclose(StartupWav);
-    timer_open.stop();
-    printf("It took %d useconds to close file\n\r",timer_open.read_us());
+
+
    
     
     string FileName;
@@ -457,13 +448,31 @@
     i2s.start();
     sampletick.attach(&isr,1.0/sampling_freq);  //1/16000
 
+
+
+    timer_open.reset();
+    timer_open.start();    
     StartupWav = fopen("/sd/mydir/Startup.wav","rb");
+    timer_open.reset();
+    printf("It took %d useconds to open file\n\r",timer_open.read_us());
+    //const char* folder2 = folder.c_str();
+
+
+
     fseek(StartupWav,44,SEEK_SET);
     WavInfo_Startup = ReadFileInfo(WavInfo_Startup,StartupWav);
 
+    
+    
+
     printf("about to play wav file\n\r");
     Play_WaveFile(StartupWav,WavInfo_Startup);
     printf("finished playing Wav file\n\r");
+    timer_open.reset();
+    timer_open.start();
+    fclose(StartupWav);
+    timer_open.stop();
+    printf("It took %d useconds to close file\n\r",timer_open.read_us());
     /************************************PLAY WAV FILE LOOP*******************/
     //Play_WaveFileLoop(Sound, NotchingSet);
     /************************************END OF PLAY WAV FILE LOOP*************/