530dd446cb
* Added support for audio using pins C4, C5, B6, B7 * Fixed bug where port direction wasn't set correctly for B5, B6, B7 audio ports
862 lines
26 KiB
C
862 lines
26 KiB
C
/* Copyright 2016 Jack Humbert
|
|
*
|
|
* 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 <stdio.h>
|
|
#include <string.h>
|
|
//#include <math.h>
|
|
#if defined(__AVR__)
|
|
#include <avr/pgmspace.h>
|
|
#include <avr/interrupt.h>
|
|
#include <avr/io.h>
|
|
#endif
|
|
#include "print.h"
|
|
#include "audio.h"
|
|
#include "keymap.h"
|
|
#include "wait.h"
|
|
|
|
#include "eeconfig.h"
|
|
|
|
#define CPU_PRESCALER 8
|
|
|
|
// -----------------------------------------------------------------------------
|
|
// Timer Abstractions
|
|
// -----------------------------------------------------------------------------
|
|
|
|
//Currently we support timers 1 and 3 used at the sime time, channels A-C,
|
|
//pins PB5, PB6, PB7, PC4, PC5, and PC6
|
|
#if defined(C6_AUDIO)
|
|
#define CPIN_AUDIO
|
|
#define CPIN_SET_DIRECTION DDRC |= _BV(PORTC6);
|
|
#define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
|
|
#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
|
|
#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
|
|
#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
|
|
#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
|
|
#define TIMER_3_PERIOD ICR3
|
|
#define TIMER_3_DUTY_CYCLE OCR3A
|
|
#define TIMER3_AUDIO_vect TIMER3_COMPA_vect
|
|
#endif
|
|
#if defined(C5_AUDIO)
|
|
#define CPIN_AUDIO
|
|
#define CPIN_SET_DIRECTION DDRC |= _BV(PORTC5);
|
|
#define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3B1) | (0 << COM3B0) | (1 << WGM31) | (0 << WGM30);
|
|
#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3B)
|
|
#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3B)
|
|
#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3B1);
|
|
#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3B1) | _BV(COM3B0));
|
|
#define TIMER_3_PERIOD ICR3
|
|
#define TIMER_3_DUTY_CYCLE OCR3B
|
|
#define TIMER3_AUDIO_vect TIMER3_COMPB_vect
|
|
#endif
|
|
#if defined(C4_AUDIO)
|
|
#define CPIN_AUDIO
|
|
#define CPIN_SET_DIRECTION DDRC |= _BV(PORTC4);
|
|
#define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3C1) | (0 << COM3C0) | (1 << WGM31) | (0 << WGM30);
|
|
#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3C)
|
|
#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3C)
|
|
#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3C1);
|
|
#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3C1) | _BV(COM3C0));
|
|
#define TIMER_3_PERIOD ICR3
|
|
#define TIMER_3_DUTY_CYCLE OCR3C
|
|
#define TIMER3_AUDIO_vect TIMER3_COMPC_vect
|
|
#endif
|
|
|
|
#if defined(B5_AUDIO)
|
|
#define BPIN_AUDIO
|
|
#define BPIN_SET_DIRECTION DDRB |= _BV(PORTB5);
|
|
#define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10);
|
|
#define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1A)
|
|
#define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1A)
|
|
#define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1A1);
|
|
#define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1A1) | _BV(COM1A0));
|
|
#define TIMER_1_PERIOD ICR1
|
|
#define TIMER_1_DUTY_CYCLE OCR1A
|
|
#define TIMER1_AUDIO_vect TIMER1_COMPA_vect
|
|
#endif
|
|
#if defined(B6_AUDIO)
|
|
#define BPIN_AUDIO
|
|
#define BPIN_SET_DIRECTION DDRB |= _BV(PORTB6);
|
|
#define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1B1) | (0 << COM1B0) | (1 << WGM11) | (0 << WGM10);
|
|
#define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1B)
|
|
#define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1B)
|
|
#define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1B1);
|
|
#define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1B1) | _BV(COM1B0));
|
|
#define TIMER_1_PERIOD ICR1
|
|
#define TIMER_1_DUTY_CYCLE OCR1B
|
|
#define TIMER1_AUDIO_vect TIMER1_COMPB_vect
|
|
#endif
|
|
#if defined(B7_AUDIO)
|
|
#define BPIN_AUDIO
|
|
#define BPIN_SET_DIRECTION DDRB |= _BV(PORTB7);
|
|
#define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1C1) | (0 << COM1C0) | (1 << WGM11) | (0 << WGM10);
|
|
#define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1C)
|
|
#define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1C)
|
|
#define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1C1);
|
|
#define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1C1) | _BV(COM1C0));
|
|
#define TIMER_1_PERIOD ICR1
|
|
#define TIMER_1_DUTY_CYCLE OCR1C
|
|
#define TIMER1_AUDIO_vect TIMER1_COMPC_vect
|
|
#endif
|
|
// -----------------------------------------------------------------------------
|
|
|
|
|
|
int voices = 0;
|
|
int voice_place = 0;
|
|
float frequency = 0;
|
|
float frequency_alt = 0;
|
|
int volume = 0;
|
|
long position = 0;
|
|
|
|
float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
bool sliding = false;
|
|
|
|
float place = 0;
|
|
|
|
uint8_t * sample;
|
|
uint16_t sample_length = 0;
|
|
|
|
bool playing_notes = false;
|
|
bool playing_note = false;
|
|
float note_frequency = 0;
|
|
float note_length = 0;
|
|
uint8_t note_tempo = TEMPO_DEFAULT;
|
|
float note_timbre = TIMBRE_DEFAULT;
|
|
uint16_t note_position = 0;
|
|
float (* notes_pointer)[][2];
|
|
uint16_t notes_count;
|
|
bool notes_repeat;
|
|
bool note_resting = false;
|
|
|
|
uint8_t current_note = 0;
|
|
uint8_t rest_counter = 0;
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
float vibrato_counter = 0;
|
|
float vibrato_strength = .5;
|
|
float vibrato_rate = 0.125;
|
|
#endif
|
|
|
|
float polyphony_rate = 0;
|
|
|
|
static bool audio_initialized = false;
|
|
|
|
audio_config_t audio_config;
|
|
|
|
uint16_t envelope_index = 0;
|
|
bool glissando = true;
|
|
|
|
#ifndef STARTUP_SONG
|
|
#define STARTUP_SONG SONG(STARTUP_SOUND)
|
|
#endif
|
|
#ifndef AUDIO_ON_SONG
|
|
#define AUDIO_ON_SONG SONG(AUDIO_ON_SOUND)
|
|
#endif
|
|
#ifndef AUDIO_OFF_SONG
|
|
#define AUDIO_OFF_SONG SONG(AUDIO_OFF_SOUND)
|
|
#endif
|
|
float startup_song[][2] = STARTUP_SONG;
|
|
float audio_on_song[][2] = AUDIO_ON_SONG;
|
|
float audio_off_song[][2] = AUDIO_OFF_SONG;
|
|
|
|
void audio_init()
|
|
{
|
|
|
|
// Check EEPROM
|
|
if (!eeconfig_is_enabled())
|
|
{
|
|
eeconfig_init();
|
|
}
|
|
audio_config.raw = eeconfig_read_audio();
|
|
|
|
if (!audio_initialized) {
|
|
|
|
// Set audio ports as output
|
|
#ifdef CPIN_AUDIO
|
|
CPIN_SET_DIRECTION
|
|
DISABLE_AUDIO_COUNTER_3_ISR;
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
BPIN_SET_DIRECTION
|
|
DISABLE_AUDIO_COUNTER_1_ISR;
|
|
#endif
|
|
|
|
// TCCR3A / TCCR3B: Timer/Counter #3 Control Registers TCCR3A/TCCR3B, TCCR1A/TCCR1B
|
|
// Compare Output Mode (COM3An and COM1An) = 0b00 = Normal port operation
|
|
// OC3A -- PC6
|
|
// OC3B -- PC5
|
|
// OC3C -- PC4
|
|
// OC1A -- PB5
|
|
// OC1B -- PB6
|
|
// OC1C -- PB7
|
|
|
|
// Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14. Period = ICR3, Duty Cycle OCR3A)
|
|
// OCR3A - PC6
|
|
// OCR3B - PC5
|
|
// OCR3C - PC4
|
|
// OCR1A - PB5
|
|
// OCR1B - PB6
|
|
// OCR1C - PB7
|
|
|
|
// Clock Select (CS3n) = 0b010 = Clock / 8
|
|
#ifdef CPIN_AUDIO
|
|
INIT_AUDIO_COUNTER_3
|
|
TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
|
|
TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (440 * CPU_PRESCALER));
|
|
TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (440 * CPU_PRESCALER)) * note_timbre);
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
INIT_AUDIO_COUNTER_1
|
|
TCCR1B = (1 << WGM13) | (1 << WGM12) | (0 << CS12) | (1 << CS11) | (0 << CS10);
|
|
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (440 * CPU_PRESCALER));
|
|
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (440 * CPU_PRESCALER)) * note_timbre);
|
|
#endif
|
|
|
|
audio_initialized = true;
|
|
}
|
|
|
|
if (audio_config.enable) {
|
|
PLAY_SONG(startup_song);
|
|
}
|
|
|
|
}
|
|
|
|
void stop_all_notes()
|
|
{
|
|
dprintf("audio stop all notes");
|
|
|
|
if (!audio_initialized) {
|
|
audio_init();
|
|
}
|
|
voices = 0;
|
|
|
|
#ifdef CPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_3_ISR;
|
|
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
|
#endif
|
|
|
|
#ifdef BPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_1_ISR;
|
|
DISABLE_AUDIO_COUNTER_1_OUTPUT;
|
|
#endif
|
|
|
|
playing_notes = false;
|
|
playing_note = false;
|
|
frequency = 0;
|
|
frequency_alt = 0;
|
|
volume = 0;
|
|
|
|
for (uint8_t i = 0; i < 8; i++)
|
|
{
|
|
frequencies[i] = 0;
|
|
volumes[i] = 0;
|
|
}
|
|
}
|
|
|
|
void stop_note(float freq)
|
|
{
|
|
dprintf("audio stop note freq=%d", (int)freq);
|
|
|
|
if (playing_note) {
|
|
if (!audio_initialized) {
|
|
audio_init();
|
|
}
|
|
for (int i = 7; i >= 0; i--) {
|
|
if (frequencies[i] == freq) {
|
|
frequencies[i] = 0;
|
|
volumes[i] = 0;
|
|
for (int j = i; (j < 7); j++) {
|
|
frequencies[j] = frequencies[j+1];
|
|
frequencies[j+1] = 0;
|
|
volumes[j] = volumes[j+1];
|
|
volumes[j+1] = 0;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
voices--;
|
|
if (voices < 0)
|
|
voices = 0;
|
|
if (voice_place >= voices) {
|
|
voice_place = 0;
|
|
}
|
|
if (voices == 0) {
|
|
#ifdef CPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_3_ISR;
|
|
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_1_ISR;
|
|
DISABLE_AUDIO_COUNTER_1_OUTPUT;
|
|
#endif
|
|
frequency = 0;
|
|
frequency_alt = 0;
|
|
volume = 0;
|
|
playing_note = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
|
|
float mod(float a, int b)
|
|
{
|
|
float r = fmod(a, b);
|
|
return r < 0 ? r + b : r;
|
|
}
|
|
|
|
float vibrato(float average_freq) {
|
|
#ifdef VIBRATO_STRENGTH_ENABLE
|
|
float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
|
|
#else
|
|
float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter];
|
|
#endif
|
|
vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0/average_freq)), VIBRATO_LUT_LENGTH);
|
|
return vibrated_freq;
|
|
}
|
|
|
|
#endif
|
|
|
|
#ifdef CPIN_AUDIO
|
|
ISR(TIMER3_AUDIO_vect)
|
|
{
|
|
float freq;
|
|
|
|
if (playing_note) {
|
|
if (voices > 0) {
|
|
|
|
#ifdef BPIN_AUDIO
|
|
float freq_alt = 0;
|
|
if (voices > 1) {
|
|
if (polyphony_rate == 0) {
|
|
if (glissando) {
|
|
if (frequency_alt != 0 && frequency_alt < frequencies[voices - 2] && frequency_alt < frequencies[voices - 2] * pow(2, -440/frequencies[voices - 2]/12/2)) {
|
|
frequency_alt = frequency_alt * pow(2, 440/frequency_alt/12/2);
|
|
} else if (frequency_alt != 0 && frequency_alt > frequencies[voices - 2] && frequency_alt > frequencies[voices - 2] * pow(2, 440/frequencies[voices - 2]/12/2)) {
|
|
frequency_alt = frequency_alt * pow(2, -440/frequency_alt/12/2);
|
|
} else {
|
|
frequency_alt = frequencies[voices - 2];
|
|
}
|
|
} else {
|
|
frequency_alt = frequencies[voices - 2];
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq_alt = vibrato(frequency_alt);
|
|
} else {
|
|
freq_alt = frequency_alt;
|
|
}
|
|
#else
|
|
freq_alt = frequency_alt;
|
|
#endif
|
|
}
|
|
|
|
if (envelope_index < 65535) {
|
|
envelope_index++;
|
|
}
|
|
|
|
freq_alt = voice_envelope(freq_alt);
|
|
|
|
if (freq_alt < 30.517578125) {
|
|
freq_alt = 30.52;
|
|
}
|
|
|
|
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (freq_alt * CPU_PRESCALER));
|
|
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq_alt * CPU_PRESCALER)) * note_timbre);
|
|
}
|
|
#endif
|
|
|
|
if (polyphony_rate > 0) {
|
|
if (voices > 1) {
|
|
voice_place %= voices;
|
|
if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
|
|
voice_place = (voice_place + 1) % voices;
|
|
place = 0.0;
|
|
}
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq = vibrato(frequencies[voice_place]);
|
|
} else {
|
|
freq = frequencies[voice_place];
|
|
}
|
|
#else
|
|
freq = frequencies[voice_place];
|
|
#endif
|
|
} else {
|
|
if (glissando) {
|
|
if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
|
|
frequency = frequency * pow(2, 440/frequency/12/2);
|
|
} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
|
|
frequency = frequency * pow(2, -440/frequency/12/2);
|
|
} else {
|
|
frequency = frequencies[voices - 1];
|
|
}
|
|
} else {
|
|
frequency = frequencies[voices - 1];
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq = vibrato(frequency);
|
|
} else {
|
|
freq = frequency;
|
|
}
|
|
#else
|
|
freq = frequency;
|
|
#endif
|
|
}
|
|
|
|
if (envelope_index < 65535) {
|
|
envelope_index++;
|
|
}
|
|
|
|
freq = voice_envelope(freq);
|
|
|
|
if (freq < 30.517578125) {
|
|
freq = 30.52;
|
|
}
|
|
|
|
TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
|
|
TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
|
|
}
|
|
}
|
|
|
|
if (playing_notes) {
|
|
if (note_frequency > 0) {
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq = vibrato(note_frequency);
|
|
} else {
|
|
freq = note_frequency;
|
|
}
|
|
#else
|
|
freq = note_frequency;
|
|
#endif
|
|
|
|
if (envelope_index < 65535) {
|
|
envelope_index++;
|
|
}
|
|
freq = voice_envelope(freq);
|
|
|
|
TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
|
|
TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
|
|
} else {
|
|
TIMER_3_PERIOD = 0;
|
|
TIMER_3_DUTY_CYCLE = 0;
|
|
}
|
|
|
|
note_position++;
|
|
bool end_of_note = false;
|
|
if (TIMER_3_PERIOD > 0) {
|
|
if (!note_resting)
|
|
end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF - 1));
|
|
else
|
|
end_of_note = (note_position >= (note_length));
|
|
} else {
|
|
end_of_note = (note_position >= (note_length));
|
|
}
|
|
|
|
if (end_of_note) {
|
|
current_note++;
|
|
if (current_note >= notes_count) {
|
|
if (notes_repeat) {
|
|
current_note = 0;
|
|
} else {
|
|
DISABLE_AUDIO_COUNTER_3_ISR;
|
|
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
|
playing_notes = false;
|
|
return;
|
|
}
|
|
}
|
|
if (!note_resting) {
|
|
note_resting = true;
|
|
current_note--;
|
|
if ((*notes_pointer)[current_note][0] == (*notes_pointer)[current_note + 1][0]) {
|
|
note_frequency = 0;
|
|
note_length = 1;
|
|
} else {
|
|
note_frequency = (*notes_pointer)[current_note][0];
|
|
note_length = 1;
|
|
}
|
|
} else {
|
|
note_resting = false;
|
|
envelope_index = 0;
|
|
note_frequency = (*notes_pointer)[current_note][0];
|
|
note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
|
|
}
|
|
|
|
note_position = 0;
|
|
}
|
|
}
|
|
|
|
if (!audio_config.enable) {
|
|
playing_notes = false;
|
|
playing_note = false;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#ifdef BPIN_AUDIO
|
|
ISR(TIMER1_AUDIO_vect)
|
|
{
|
|
#if defined(BPIN_AUDIO) && !defined(CPIN_AUDIO)
|
|
float freq = 0;
|
|
|
|
if (playing_note) {
|
|
if (voices > 0) {
|
|
if (polyphony_rate > 0) {
|
|
if (voices > 1) {
|
|
voice_place %= voices;
|
|
if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
|
|
voice_place = (voice_place + 1) % voices;
|
|
place = 0.0;
|
|
}
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq = vibrato(frequencies[voice_place]);
|
|
} else {
|
|
freq = frequencies[voice_place];
|
|
}
|
|
#else
|
|
freq = frequencies[voice_place];
|
|
#endif
|
|
} else {
|
|
if (glissando) {
|
|
if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
|
|
frequency = frequency * pow(2, 440/frequency/12/2);
|
|
} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
|
|
frequency = frequency * pow(2, -440/frequency/12/2);
|
|
} else {
|
|
frequency = frequencies[voices - 1];
|
|
}
|
|
} else {
|
|
frequency = frequencies[voices - 1];
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq = vibrato(frequency);
|
|
} else {
|
|
freq = frequency;
|
|
}
|
|
#else
|
|
freq = frequency;
|
|
#endif
|
|
}
|
|
|
|
if (envelope_index < 65535) {
|
|
envelope_index++;
|
|
}
|
|
|
|
freq = voice_envelope(freq);
|
|
|
|
if (freq < 30.517578125) {
|
|
freq = 30.52;
|
|
}
|
|
|
|
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
|
|
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
|
|
}
|
|
}
|
|
|
|
if (playing_notes) {
|
|
if (note_frequency > 0) {
|
|
#ifdef VIBRATO_ENABLE
|
|
if (vibrato_strength > 0) {
|
|
freq = vibrato(note_frequency);
|
|
} else {
|
|
freq = note_frequency;
|
|
}
|
|
#else
|
|
freq = note_frequency;
|
|
#endif
|
|
|
|
if (envelope_index < 65535) {
|
|
envelope_index++;
|
|
}
|
|
freq = voice_envelope(freq);
|
|
|
|
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
|
|
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
|
|
} else {
|
|
TIMER_1_PERIOD = 0;
|
|
TIMER_1_DUTY_CYCLE = 0;
|
|
}
|
|
|
|
note_position++;
|
|
bool end_of_note = false;
|
|
if (TIMER_1_PERIOD > 0) {
|
|
if (!note_resting)
|
|
end_of_note = (note_position >= (note_length / TIMER_1_PERIOD * 0xFFFF - 1));
|
|
else
|
|
end_of_note = (note_position >= (note_length));
|
|
} else {
|
|
end_of_note = (note_position >= (note_length));
|
|
}
|
|
|
|
if (end_of_note) {
|
|
current_note++;
|
|
if (current_note >= notes_count) {
|
|
if (notes_repeat) {
|
|
current_note = 0;
|
|
} else {
|
|
DISABLE_AUDIO_COUNTER_1_ISR;
|
|
DISABLE_AUDIO_COUNTER_1_OUTPUT;
|
|
playing_notes = false;
|
|
return;
|
|
}
|
|
}
|
|
if (!note_resting) {
|
|
note_resting = true;
|
|
current_note--;
|
|
if ((*notes_pointer)[current_note][0] == (*notes_pointer)[current_note + 1][0]) {
|
|
note_frequency = 0;
|
|
note_length = 1;
|
|
} else {
|
|
note_frequency = (*notes_pointer)[current_note][0];
|
|
note_length = 1;
|
|
}
|
|
} else {
|
|
note_resting = false;
|
|
envelope_index = 0;
|
|
note_frequency = (*notes_pointer)[current_note][0];
|
|
note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
|
|
}
|
|
|
|
note_position = 0;
|
|
}
|
|
}
|
|
|
|
if (!audio_config.enable) {
|
|
playing_notes = false;
|
|
playing_note = false;
|
|
}
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
void play_note(float freq, int vol) {
|
|
|
|
dprintf("audio play note freq=%d vol=%d", (int)freq, vol);
|
|
|
|
if (!audio_initialized) {
|
|
audio_init();
|
|
}
|
|
|
|
if (audio_config.enable && voices < 8) {
|
|
#ifdef CPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_3_ISR;
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_1_ISR;
|
|
#endif
|
|
|
|
// Cancel notes if notes are playing
|
|
if (playing_notes)
|
|
stop_all_notes();
|
|
|
|
playing_note = true;
|
|
|
|
envelope_index = 0;
|
|
|
|
if (freq > 0) {
|
|
frequencies[voices] = freq;
|
|
volumes[voices] = vol;
|
|
voices++;
|
|
}
|
|
|
|
#ifdef CPIN_AUDIO
|
|
ENABLE_AUDIO_COUNTER_3_ISR;
|
|
ENABLE_AUDIO_COUNTER_3_OUTPUT;
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
#ifdef CPIN_AUDIO
|
|
if (voices > 1) {
|
|
ENABLE_AUDIO_COUNTER_1_ISR;
|
|
ENABLE_AUDIO_COUNTER_1_OUTPUT;
|
|
}
|
|
#else
|
|
ENABLE_AUDIO_COUNTER_1_ISR;
|
|
ENABLE_AUDIO_COUNTER_1_OUTPUT;
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat)
|
|
{
|
|
|
|
if (!audio_initialized) {
|
|
audio_init();
|
|
}
|
|
|
|
if (audio_config.enable) {
|
|
|
|
#ifdef CPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_3_ISR;
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
DISABLE_AUDIO_COUNTER_1_ISR;
|
|
#endif
|
|
|
|
// Cancel note if a note is playing
|
|
if (playing_note)
|
|
stop_all_notes();
|
|
|
|
playing_notes = true;
|
|
|
|
notes_pointer = np;
|
|
notes_count = n_count;
|
|
notes_repeat = n_repeat;
|
|
|
|
place = 0;
|
|
current_note = 0;
|
|
|
|
note_frequency = (*notes_pointer)[current_note][0];
|
|
note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
|
|
note_position = 0;
|
|
|
|
|
|
#ifdef CPIN_AUDIO
|
|
ENABLE_AUDIO_COUNTER_3_ISR;
|
|
ENABLE_AUDIO_COUNTER_3_OUTPUT;
|
|
#endif
|
|
#ifdef BPIN_AUDIO
|
|
#ifndef CPIN_AUDIO
|
|
ENABLE_AUDIO_COUNTER_1_ISR;
|
|
ENABLE_AUDIO_COUNTER_1_OUTPUT;
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
}
|
|
|
|
bool is_playing_notes(void) {
|
|
return playing_notes;
|
|
}
|
|
|
|
bool is_audio_on(void) {
|
|
return (audio_config.enable != 0);
|
|
}
|
|
|
|
void audio_toggle(void) {
|
|
audio_config.enable ^= 1;
|
|
eeconfig_update_audio(audio_config.raw);
|
|
if (audio_config.enable)
|
|
audio_on_user();
|
|
}
|
|
|
|
void audio_on(void) {
|
|
audio_config.enable = 1;
|
|
eeconfig_update_audio(audio_config.raw);
|
|
audio_on_user();
|
|
PLAY_SONG(audio_on_song);
|
|
}
|
|
|
|
void audio_off(void) {
|
|
PLAY_SONG(audio_off_song);
|
|
wait_ms(100);
|
|
stop_all_notes();
|
|
audio_config.enable = 0;
|
|
eeconfig_update_audio(audio_config.raw);
|
|
}
|
|
|
|
#ifdef VIBRATO_ENABLE
|
|
|
|
// Vibrato rate functions
|
|
|
|
void set_vibrato_rate(float rate) {
|
|
vibrato_rate = rate;
|
|
}
|
|
|
|
void increase_vibrato_rate(float change) {
|
|
vibrato_rate *= change;
|
|
}
|
|
|
|
void decrease_vibrato_rate(float change) {
|
|
vibrato_rate /= change;
|
|
}
|
|
|
|
#ifdef VIBRATO_STRENGTH_ENABLE
|
|
|
|
void set_vibrato_strength(float strength) {
|
|
vibrato_strength = strength;
|
|
}
|
|
|
|
void increase_vibrato_strength(float change) {
|
|
vibrato_strength *= change;
|
|
}
|
|
|
|
void decrease_vibrato_strength(float change) {
|
|
vibrato_strength /= change;
|
|
}
|
|
|
|
#endif /* VIBRATO_STRENGTH_ENABLE */
|
|
|
|
#endif /* VIBRATO_ENABLE */
|
|
|
|
// Polyphony functions
|
|
|
|
void set_polyphony_rate(float rate) {
|
|
polyphony_rate = rate;
|
|
}
|
|
|
|
void enable_polyphony() {
|
|
polyphony_rate = 5;
|
|
}
|
|
|
|
void disable_polyphony() {
|
|
polyphony_rate = 0;
|
|
}
|
|
|
|
void increase_polyphony_rate(float change) {
|
|
polyphony_rate *= change;
|
|
}
|
|
|
|
void decrease_polyphony_rate(float change) {
|
|
polyphony_rate /= change;
|
|
}
|
|
|
|
// Timbre function
|
|
|
|
void set_timbre(float timbre) {
|
|
note_timbre = timbre;
|
|
}
|
|
|
|
// Tempo functions
|
|
|
|
void set_tempo(uint8_t tempo) {
|
|
note_tempo = tempo;
|
|
}
|
|
|
|
void decrease_tempo(uint8_t tempo_change) {
|
|
note_tempo += tempo_change;
|
|
}
|
|
|
|
void increase_tempo(uint8_t tempo_change) {
|
|
if (note_tempo - tempo_change < 10) {
|
|
note_tempo = 10;
|
|
} else {
|
|
note_tempo -= tempo_change;
|
|
}
|
|
}
|