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