qmk_firmware/quantum/fauxclicky.h

/*
Copyright 2017 Priyadi Iman Nurcahyo

This program 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 2 of the License, or
(at your option) any later version.
This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifdef AUDIO_ENABLE
#error "AUDIO_ENABLE and FAUXCLICKY_ENABLE cannot be both enabled"
#endif

#include "musical_notes.h"
#include "stdbool.h"

__attribute__ ((weak))
float fauxclicky_pressed_note[2] = MUSICAL_NOTE(_D4, 0.25);
__attribute__ ((weak))
float fauxclicky_released_note[2] = MUSICAL_NOTE(_C4, 0.125);
__attribute__ ((weak))
float fauxclicky_beep_note[2] = MUSICAL_NOTE(_C4, 0.25);

bool fauxclicky_enabled;

//
// tempo in BPM
//

#ifndef FAUXCLICKY_TEMPO
#define FAUXCLICKY_TEMPO TEMPO_DEFAULT
#endif

// beep on press
#define FAUXCLICKY_ACTION_PRESS fauxclicky_play(fauxclicky_pressed_note)

// beep on release
#define FAUXCLICKY_ACTION_RELEASE fauxclicky_play(fauxclicky_released_note)

// general purpose beep
#define FAUXCLICKY_BEEP fauxclicky_play(fauxclicky_beep_note)

// enable
#define FAUXCLICKY_ON fauxclicky_enabled = true

// disable
#define FAUXCLICKY_OFF do { \
    fauxclicky_enabled = false; \
    fauxclicky_stop(); \
} while (0)

// toggle
#define FAUXCLICKY_TOGGLE do { \
    if (fauxclicky_enabled) { \
        FAUXCLICKY_OFF; \
    } else { \
        FAUXCLICKY_ON; \
    } \
} while (0)

//
// pin configuration
//

#ifndef FAUXCLICKY_CPU_PRESCALER
#define FAUXCLICKY_CPU_PRESCALER 8
#endif

#ifndef FAUXCLICKY_ENABLE_OUTPUT
#define FAUXCLICKY_ENABLE_OUTPUT TCCR3A |= _BV(COM3A1)
#endif

#ifndef FAUXCLICKY_DISABLE_OUTPUT
#define FAUXCLICKY_DISABLE_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0))
#endif

#ifndef FAUXCLICKY_TIMER_PERIOD
#define FAUXCLICKY_TIMER_PERIOD ICR3
#endif

#ifndef FAUXCLICKY_DUTY_CYCLE
#define FAUXCLICKY_DUTY_CYCLE OCR3A
#endif

//
// definitions
//

void fauxclicky_init(void);
void fauxclicky_stop(void);
void fauxclicky_play(float note[2]);
void fauxclicky_check(void);