Saad Tayyab / WDplayer

Plays 8-bit Mono Wav Files for PWM

WDplayer.h@2:41149130ecf4, 2019-04-09 (annotated)

Committer:
rottenegg
Date:
Tue Apr 09 04:32:52 2019 +0000
Revision:
2:41149130ecf4
Parent:
1:f24e1ca9c03a
Child:
3:574fdfeb949e
Changed Example code;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rottenegg 0:c2f3d752d98f 1 #ifndef WDPLAYER_H
rottenegg 0:c2f3d752d98f 2 #define WDPLAYER_H
rottenegg 0:c2f3d752d98f 3
rottenegg 2:41149130ecf4 4 /** WDplayer Class
rottenegg 2:41149130ecf4 5 * A PWM Audio Player for .Wav runs for 8-bit Mono Audio samples
rottenegg 2:41149130ecf4 6 *
rottenegg 2:41149130ecf4 7 * Example:
rottenegg 2:41149130ecf4 8 *@code
rottenegg 2:41149130ecf4 9 *#include "mbed.h"
rottenegg 2:41149130ecf4 10 *#include "SDFileSystem.h"
rottenegg 2:41149130ecf4 11 *#include "WDplayer.h"
rottenegg 2:41149130ecf4 12 *
rottenegg 2:41149130ecf4 13 *SDFileSystem sd(PTE3, PTE1, PTE2, PTE4, "sd");
rottenegg 2:41149130ecf4 14 *
rottenegg 2:41149130ecf4 15 *int main() {
rottenegg 2:41149130ecf4 16 * //Defining a File Path
rottenegg 2:41149130ecf4 17 * const char *mp3p;
rottenegg 2:41149130ecf4 18 * mp3p = "/sd/Game-Files/AudBin/play1.wav";
rottenegg 2:41149130ecf4 19 *
rottenegg 2:41149130ecf4 20 * //Creating an Object
rottenegg 2:41149130ecf4 21 * WDplayer mp3;
rottenegg 2:41149130ecf4 22 *
rottenegg 2:41149130ecf4 23 * //Intialize with File Path
rottenegg 2:41149130ecf4 24 * mp3.intWD(mp3p);
rottenegg 2:41149130ecf4 25 *
rottenegg 2:41149130ecf4 26 * //Play the File
rottenegg 2:41149130ecf4 27 * mp3.WDplay();
rottenegg 2:41149130ecf4 28 *
rottenegg 2:41149130ecf4 29 * //Changing Path
rottenegg 2:41149130ecf4 30 * mp3p = "/sd/Game-Files/AudBin/play2.wav";
rottenegg 2:41149130ecf4 31 *
rottenegg 2:41149130ecf4 32 * //Using the One Tick One Sample Playing
rottenegg 2:41149130ecf4 33 * while(1) {
rottenegg 2:41149130ecf4 34 * mp3.WDtck();
rottenegg 2:41149130ecf4 35 * }
rottenegg 2:41149130ecf4 36 *
rottenegg 2:41149130ecf4 37 *}
rottenegg 2:41149130ecf4 38 *@endcode
rottenegg 0:c2f3d752d98f 39 */
rottenegg 0:c2f3d752d98f 40
rottenegg 0:c2f3d752d98f 41
rottenegg 0:c2f3d752d98f 42 //Best Audio
rottenegg 0:c2f3d752d98f 43 //.wav sampled at 16000hz
rottenegg 0:c2f3d752d98f 44 // mono channel only
rottenegg 0:c2f3d752d98f 45
rottenegg 0:c2f3d752d98f 46 #include <iostream>
rottenegg 0:c2f3d752d98f 47 #include "mbed.h"
rottenegg 0:c2f3d752d98f 48
rottenegg 0:c2f3d752d98f 49 class WDplayer{
rottenegg 0:c2f3d752d98f 50
rottenegg 0:c2f3d752d98f 51 public:
rottenegg 0:c2f3d752d98f 52 /** Intialize WDplayer with a File Path
rottenegg 0:c2f3d752d98f 53 *
rottenegg 0:c2f3d752d98f 54 *@param path File Path Pointer
rottenegg 0:c2f3d752d98f 55 */
rottenegg 0:c2f3d752d98f 56 void intWD(const char *path);
rottenegg 0:c2f3d752d98f 57 /** Plays the Wav File (mbed waits till File has finished playing)
rottenegg 0:c2f3d752d98f 58 *
rottenegg 0:c2f3d752d98f 59 */
rottenegg 0:c2f3d752d98f 60 void WDplay();
rottenegg 0:c2f3d752d98f 61 /** Plays the Wav File one Sample at a time
rottenegg 0:c2f3d752d98f 62 *
rottenegg 0:c2f3d752d98f 63 */
rottenegg 0:c2f3d752d98f 64 void WDtck();
rottenegg 0:c2f3d752d98f 65 /** Returns the created PWM period.
rottenegg 0:c2f3d752d98f 66 *
rottenegg 0:c2f3d752d98f 67 *@returns A unsigned long of the Period the PWM is working on
rottenegg 0:c2f3d752d98f 68 */
rottenegg 0:c2f3d752d98f 69 unsigned long get_pwmfreq();
rottenegg 0:c2f3d752d98f 70
rottenegg 0:c2f3d752d98f 71
rottenegg 0:c2f3d752d98f 72 private:
rottenegg 0:c2f3d752d98f 73 unsigned int _length;
rottenegg 0:c2f3d752d98f 74 float _pwmfreq;
rottenegg 0:c2f3d752d98f 75 const char *_path;
rottenegg 0:c2f3d752d98f 76 FILE *_fptr;
rottenegg 0:c2f3d752d98f 77 unsigned int _tck;
rottenegg 0:c2f3d752d98f 78 };
rottenegg 0:c2f3d752d98f 79 #endif