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/*
* Author: Yevgeniy Kiveisha <yevgeniy.kiveisha@intel.com>
* Copyright (c) 2014 Intel Corporation.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <iostream>
#include <string>
#include <stdexcept>
#include <unistd.h>
#include "buzzer.hpp"
using namespace upm;
using namespace std;
Buzzer::Buzzer(int pinNumber) {
m_pwm_context = mraa_pwm_init(pinNumber);
if(m_pwm_context == 0)
{
throw std::invalid_argument(std::string(__FUNCTION__) +
": mraa_pwm_init() failed, invalid pin?");
return;
}
m_name = "Buzzer";
mraa_pwm_enable (m_pwm_context, 1);
Buzzer::setVolume(1.0);
}
void Buzzer::setVolume(float vol){
m_volume = vol;
}
float Buzzer::getVolume(){
return m_volume;
}
int Buzzer::playSound(int note, int delay) {
mraa_pwm_period_us(m_pwm_context, note);
mraa_pwm_write(m_pwm_context, m_volume * 0.5);
if(delay){
usleep(delay);
Buzzer::stopSound();
}
return note;
}
void Buzzer::stopSound(){
// Has to be checked out on a scope and make sure it's flat 0
mraa_pwm_period_us(m_pwm_context, 1);
mraa_pwm_write(m_pwm_context, 0);
}
Buzzer::~Buzzer() {
Buzzer::stopSound();
mraa_pwm_enable(m_pwm_context, 0);
mraa_pwm_close(m_pwm_context);
}
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