Diff: Music/Music.cpp

Revision:

0:d7214673ab2d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Music/Music.cpp	Mon Jul 22 14:45:38 2019 +0000
@@ -0,0 +1,57 @@
+
+#include "Music.h"
+AnalogOut speaker(DAC0_OUT);
+/**
+* @brief Constructor (no paramateters)
+*/
+Music::Music()
+{
+
+}
+/**
+* @brief Deconstructor
+*/
+Music::~Music()
+{
+    
+    
+
+}
+
+/**
+* @brief Initialiser. Takes the sound data and initialises the buzzer
+* @param const int* data @details The audio data. A array of the amplitude of 
+* the waveform over time
+* @param length @details Length of above sound array 
+*/
+void Music::init(const int* data,int length)
+{
+    
+    _data = data;
+    _length = length;
+ // Has to << then 1/sample rate
+ // until music played stay silent
+    _index = 0;
+
+}
+/**
+* @brief Plays the next sound sample. Must be called at the sample rate
+*/
+void Music::play_next()
+{
+    double duty_cycle;
+    duty_cycle = _data[_index];
+    //printf("%i = %f\n",_index,duty_cycle);
+
+    if (_index < _length) {      
+        speaker = duty_cycle/255;
+        //printf("%f\n",duty_cycle/255); 
+        
+        _index++;
+    } else {
+        _index = 0;    
+    }
+        
+}
+
+