Ryan Sartin
This program utilizes an LCD, RPG, 8 ohm speaker, and SD card to provide the basic functions of a music player. The project cycles through the SD card for .wav files and tracks elapsed time. See http://mbed.org/users/rsartin3/notebook/audio-player/ for more information.
Dependencies: DebounceIn RPG SDFileSystem TextLCD mbed wav_header wave_player
Revision 1:f31b40073d35, committed 2013-03-05
- Comitter:
- rsartin3
- Date:
- Tue Mar 05 06:34:43 2013 +0000
- Parent:
- 0:040129c3d961
- Commit message:
- ;
Changed in this revision
diff -r 040129c3d961 -r f31b40073d35 DebounceIn.lib --- a/DebounceIn.lib Mon Mar 04 22:37:29 2013 +0000 +++ b/DebounceIn.lib Tue Mar 05 06:34:43 2013 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/users/AjK/code/DebounceIn/#1f3e0982f89d +http://mbed.org/users/rsartin3/code/DebounceIn/#1f3e0982f89d
diff -r 040129c3d961 -r f31b40073d35 main.cpp
--- a/main.cpp Mon Mar 04 22:37:29 2013 +0000
+++ b/main.cpp Tue Mar 05 06:34:43 2013 +0000
@@ -1,7 +1,6 @@
/*
- MUSIC PLAYER HOORAY
- wumbo
-*/
+ * Audio Player
+ */
#include "mbed.h"
#include "DebounceIn.h"
@@ -36,16 +35,16 @@
AnalogOut DACout(p18);
wave_player waver(&DACout);
-// Timer Junk
+// Ticker for interrupting song
Ticker songTick;
time_t time_i;
struct playlist {
// Doubly-linked list to easily traverse between filenames
- char s_name[30]; // File name without .wav extension
- playlist *prev; // Pointer to next filename
- playlist *next; // Pointer to previous filename
-}; // Structure name courtesy of Layla Marshall
+ char s_name[30]; // File name without .wav extension
+ playlist *prev; // Pointer to next filename
+ playlist *next; // Pointer to previous filename
+};
void insert( struct playlist *root, string songName)
{
@@ -77,11 +76,11 @@
*/
DIR *d; // Directory pointer
dirent *file; // dirent to get file name
- // playlist *curr = root; //
+ // playlist *curr = root;
int count = 0; // count of songs added to playlist
if(DEBUG) pc.printf("\n\rWell... Let's get started!\r\n");
- if((d = opendir(location)) == NULL) { //Attempt to open directory at given location
+ if((d = opendir(location)) == NULL) { // Attempt to open directory at given location
// If Error
lcd.cls();
lcd.printf("Unable to open directory!");
@@ -103,17 +102,17 @@
if(count == 0){ // If still at root node
count++; // Increment count
- strcpy(root->s_name, (str.substr(0,exten)).c_str()); //Copy filename into root node
- // curr = root;
+ strcpy(root->s_name, (str.substr(0,exten)).c_str()); // Copy filename into root node
+ // curr = root;
}else{
- count++; // Increment count
+ count++; // Increment count
insert(root,str.substr(0,exten)); // Add new song to playlist
}
}
}
closedir(d); // Close directory
}
- return count; //Return number of songnames added to playlist
+ return count; // Return number of songnames added to playlist
}
void printList(playlist *root) {
@@ -177,7 +176,6 @@
// if(DEBUG) printf("Time Elapsed: %d. (Start: %d, Stop: %d)\n\r", time_f - time_i, time_i, time_f);
lcd.locate(6,1);
lcd.printf("%d", time_f - time_i + 1);
-
}
int main() {
diff -r 040129c3d961 -r f31b40073d35 wav_header.lib --- a/wav_header.lib Mon Mar 04 22:37:29 2013 +0000 +++ b/wav_header.lib Tue Mar 05 06:34:43 2013 +0000 @@ -1,1 +1,1 @@ -wav_header#a50bba1964ec +http://mbed.org/users/rsartin3/code/wav_header/#a50bba1964ec