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// *************************************************************************************************
//
// Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
//
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the
// distribution.
//
// Neither the name of Texas Instruments Incorporated nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// *************************************************************************************************
#ifndef BUZZER_H_
#define BUZZER_H_
// *************************************************************************************************
// Include section
// *************************************************************************************************
// Prototypes section
extern void reset_buzzer(void);
extern void start_buzzer(u8 cycles, u16 on_time, u16 off_time);
extern void stop_buzzer(void);
extern void toggle_buzzer(void);
extern u8 is_buzzer(void);
extern void countdown_buzzer(void);
// *************************************************************************************************
// Defines section
// Buzzer states
#define BUZZER_OFF (0u)
#define BUZZER_ON_OUTPUT_DISABLED (1u)
#define BUZZER_ON_OUTPUT_ENABLED (2u)
// Buzzer modes
#define BUZZER_MODE_SINGLE (0u)
#define BUZZER_MODE_SINGLE_CONTINUOUS (1u)
#define BUZZER_MODE_DOUBLE_CONTINUOUS (2u)
// Buzzer output signal frequency = 32,768kHz/(BUZZER_TIMER_STEPS+1)/2 = 2.7kHz
#define BUZZER_TIMER_STEPS (5u)
// Buzzer on time
#define BUZZER_ON_TICKS (CONV_MS_TO_TICKS(20))
// Buzzer off time
#define BUZZER_OFF_TICKS (CONV_MS_TO_TICKS(200))
// *************************************************************************************************
// Global Variable section
struct buzzer
{
// Keep output for "time" seconds
u8 time;
// On/off duty
u16 on_time;
u16 off_time;
// Current buzzer output state
u8 state;
};
extern struct buzzer sBuzzer;
// *************************************************************************************************
// Extern section
#endif /*BUZZER_H_*/