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/* | |||
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/>. | |||
*/ | |||
#include <avr/interrupt.h> | |||
#include <avr/io.h> | |||
#include <timer.h> | |||
#include <fauxclicky.h> | |||
#include <stdbool.h> | |||
#include <musical_notes.h> | |||
__attribute__ ((weak)) | |||
float fauxclicky_pressed_note[2] = MUSICAL_NOTE(_F3, 2); | |||
__attribute__ ((weak)) | |||
float fauxclicky_released_note[2] = MUSICAL_NOTE(_A3, 2); | |||
__attribute__ ((weak)) | |||
float fauxclicky_beep_note[2] = MUSICAL_NOTE(_C3, 2); | |||
bool fauxclicky_enabled = true; | |||
uint16_t note_start = 0; | |||
bool note_playing = false; | |||
uint16_t note_period = 0; | |||
void fauxclicky_init() | |||
{ | |||
// Set port PC6 (OC3A and /OC4A) as output | |||
DDRC |= _BV(PORTC6); | |||
// TCCR3A / TCCR3B: Timer/Counter #3 Control Registers | |||
TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); | |||
TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30); | |||
} | |||
void fauxclicky_stop() | |||
{ | |||
FAUXCLICKY_DISABLE_OUTPUT; | |||
note_playing = false; | |||
} | |||
void fauxclicky_play(float note[2]) { | |||
if (!fauxclicky_enabled) return; | |||
if (note_playing) fauxclicky_stop(); | |||
FAUXCLICKY_TIMER_PERIOD = (uint16_t)(((float)F_CPU) / (note[0] * FAUXCLICKY_CPU_PRESCALER)); | |||
FAUXCLICKY_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (note[0] * FAUXCLICKY_CPU_PRESCALER)) / 2); | |||
note_playing = true; | |||
note_period = (note[1] / 16) * (60 / (float)FAUXCLICKY_TEMPO) * 100; // check this | |||
note_start = timer_read(); | |||
FAUXCLICKY_ENABLE_OUTPUT; | |||
} | |||
void fauxclicky_check() { | |||
if (!note_playing) return; | |||
if (timer_elapsed(note_start) > note_period) { | |||
fauxclicky_stop(); | |||
} | |||
} |
@ -0,0 +1,87 @@ | |||
/* | |||
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" | |||
__attribute__ ((weak)) | |||
float fauxclicky_pressed_note[2]; | |||
__attribute__ ((weak)) | |||
float fauxclicky_released_note[2]; | |||
__attribute__ ((weak)) | |||
float fauxclicky_beep_note[2]; | |||
// | |||
// 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) | |||
// | |||
// 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); | |||