Josh Davy / Mbed 2 deprecated Flip

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Dependencies:   mbed el17jd

Music/Music.cpp

Committer:
joshdavy
Date:
2019-04-19
Revision:
8:21b6d4dbce44
Parent:
6:2ca1516ec1e2
Child:
11:db27d3838514

File content as of revision 8:21b6d4dbce44:


#include "Music.h"
PwmOut speaker(PTC10);

Music::Music()
{

}
Music::~Music()
{
    
    

}
void Music::init(const int* data,int length)
{
    
    _data = data;
    _length = length;
    speaker.period(0.00003); // Has to << then 1/sample rate
    speaker.write(0); // until music played stay silent
    _index = 0;
}

void Music::play_next()
{
    double duty_cycle;
    duty_cycle = ((128-_data[_index]*1.7)+128)/256.0;
    //printf("%i = %f\n",_index,duty_cycle);

    if (_index < _length) {      
        speaker.write(duty_cycle);
        
        _index++;
    } else {
        _index = 0;    
    }
        
}