Revision 4:bef3b485f22e, committed 2011-12-19

Comitter:

samux

Date:

Mon Dec 19 16:13:32 2011 +0000

Parent:

3:e6a29c83ac52

Child:

5:b49b6a8ca111

Commit message:

can hear something from the microphone (some noise but...)

Changed in this revision

--- a/main.cpp	Mon Dec 19 15:46:17 2011 +0000
+++ b/main.cpp	Mon Dec 19 16:13:32 2011 +0000
@@ -1,47 +1,25 @@
 #include "mbed.h"
 #include "USBAudio.h"
-#include "SDFileSystem.h"
 
 extern "C" void HardFault_Handler() {
     error("Hard Fault!\n");
 }
 
 USBAudio audio(8000, 1, 0x74ac, 0x8788);
-SDFileSystem sd(p5, p6, p7, p8, "sd"); // the pinout on the mbed Cool Components workshop board
 AnalogIn mic(p20);
 DigitalOut p(p21);
 
-/* Wav file header data, for setting up the transfer protocol */
-short channels;
-long sampleRate;
-short wordWidth;
-
 int16_t buf[8];
 
+
 int main() {
-    FILE * fp;
-
-    fp = fopen("/sd/3.wav", "r");
-    if (fp == NULL) {
-        error("Could not open file for write\n");
-    }
-
-    printf("test\r\n");
-    /* Parse wav file header */
-    fseek(fp, 22, SEEK_SET);
-    fread(&channels, 2, 1, fp);
-    fseek(fp, 24, SEEK_SET);
-    fread(&sampleRate, 4, 1, fp);
-    fseek(fp, 34, SEEK_SET);
-    fread(&wordWidth, 2, 1, fp);
 
     while (1) {
         p = 1;
         for (int i = 0; i < 8; i++) {
-            if (!feof(fp)) {
-                fread(buf + i, 2, 1, fp);
-            } else {
-                fseek(fp, 36, SEEK_SET);
+            buf[i] = (mic.read_u16() >> 3) - 4100;
+            if (i != 7) {
+                wait_us(110);
             }
         }
         p = 0;