/*

* Buzzer.cpp

*

* Copyright 2012-2013 BrewPi.

*

* This file is part of BrewPi.

*

* BrewPi is free software: you can redistribute it and/or modify

* it under the terms of the GNU General Public License as published by

* the Free Software Foundation, either version 3 of the License, or

* (at your option) any later version.

*

* BrewPi 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 General Public License for more details.

*

* You should have received a copy of the GNU General Public License

* along with BrewPi. If not, see <http://www.gnu.org/licenses/>.

*/

#include "Brewpi.h"

#include "Ticks.h"

#include "Pins.h"

#include "Buzzer.h"

// TODO - Implement

#if BREWPI_BUZZER

#ifndef ESP8266_ONE

#include <util/delay.h>

#include "FastDigitalPin.h"

#if (alarmPin != 3)

#error "Check PWM settings when you want to use a different pin for the alarm"

#endif

#endif

#if BREWPI_BOARD == BREWPI_BOARD_LEONARDO

#define BUZZER_TIMER_REG TCCR0A

#define BUZZER_TIMER_REG_FLAG COM0B1

#define BUZZER_TIMER_REG_INIT (void);

#elif BREWPI_BOARD == BREWPI_BOARD_STANDARD

#define BUZZER_TIMER_REG TCCR2A

#define BUZZER_TIMER_REG_FLAG COM2B1

#elif BREWPI_BOARD == BREWPI_BOARD_MEGA

#define BUZZER_TIMER_REG TCCR3A

#define BUZZER_TIMER_REG_FLAG COM3C1

#endif

#ifdef ESP8266_ONE

#define BEEP_ON() digitalWrite(BuzzPin,1);

#define BEEP_OFF() digitalWrite(BuzzPin,0);

#else

#define BEEP_ON() bitSet(BUZZER_TIMER_REG,BUZZER_TIMER_REG_FLAG);

#define BEEP_OFF() bitClear(BUZZER_TIMER_REG,BUZZER_TIMER_REG_FLAG);

#endif

void Buzzer::init(void){

#ifdef ESP8266_ONE

pinMode(BuzzPin,OUTPUT);

#else

// set up square wave PWM for buzzer

fastPinMode(alarmPin,OUTPUT);

#endif

#if BREWPI_BOARD == BREWPI_BOARD_LEONARDO

// Arduino Leonardo, no further setup needed - timer already active

#elif BREWPI_BOARD == BREWPI_BOARD_STANDARD

// Arduino UNO, buzzer is on OC2B

TCCR2A = (1<<COM2B1) | (1<<WGM20);

TCCR2B = (1<<WGM22) | (1<<CS21) | (1<<CS20); // prescaler = 32

OCR2A = 125; // timer top. This value adjusts the frequency.

OCR2B = 62;

#elif BREWPI_BOARD == BREWPI_BOARD_MEGA

TCCR3A = (1<<COM3C1) | (1<<WGM30);

TCCR3C = (1<<WGM32) | (1<<CS31) | (1<<CS30); // prescaler = 32

OCR3A = 125; // timer top. This value adjusts the frequency.

OCR3C = 62;

TIMSK3 |= (1 << OCIE3C);

#endif

}

void Buzzer::setActive(bool active)

{

if (active!=this->isActive()) {

ValueActuator::setActive(active);

if (active) {

BEEP_ON();

}

else {

BEEP_OFF();

}

}

}

void Buzzer::beep(uint8_t numBeeps, uint16_t duration){

for(uint8_t beepCount = 0; beepCount<numBeeps; beepCount++){

BEEP_ON();

wait.millis(duration);

BEEP_OFF();

if(beepCount < numBeeps - 1){

wait.millis(duration); // not the last beep

}

}

}

Buzzer buzzer;

#endif