buzzer.h

Go to the documentation of this file.

/*
  buzzer.h - ESP3D buzzer class
 
  Copyright (c) 2014 Luc Lebosse. All rights reserved.
 
  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.
 
  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.
 
  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
#ifndef _BUZZER_H
#define _BUZZER_H
#define BEEP_FREQUENCY   3000
 
struct tone_data {
    int frequency;
    int duration;
    bool processing;
    tone_data * _next;
};
 
class BuzzerDevice
{
public:
    BuzzerDevice();
    ~BuzzerDevice();
    void playsound(int frequency, int duration);
    bool started()
    {
        return _started;
    }
    bool begin();
    void end();
    void handle();
    tone_data * getNextTone();
    bool isPlaying();
    void waitWhilePlaying();
    void beep(int count=1, int delay = 0, int frequency = BEEP_FREQUENCY);
private:
    tone_data * _head;
    tone_data * _tail;
    bool _started;
    void purgeData();
    bool addToneToList(int frequency, int duration);
    void no_tone();
 
};
extern BuzzerDevice esp3d_buzzer;
#endif //_BUZZER_H