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-rw-r--r--quantum/audio/audio.c770
-rw-r--r--quantum/audio/audio.h17
-rw-r--r--quantum/audio/audio_pwm.c643
-rw-r--r--quantum/audio/luts.c382
-rw-r--r--quantum/audio/luts.h15
-rw-r--r--quantum/audio/vibrato_lut.h28
-rw-r--r--quantum/audio/voices.c79
-rw-r--r--quantum/audio/voices.h5
8 files changed, 1436 insertions, 503 deletions
diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c
index e85370d958..27b64f8c96 100644
--- a/quantum/audio/audio.c
+++ b/quantum/audio/audio.c
@@ -1,6 +1,6 @@
#include <stdio.h>
#include <string.h>
-#include <math.h>
+//#include <math.h>
#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <avr/io.h>
@@ -10,30 +10,28 @@
#include "eeconfig.h"
-#ifdef VIBRATO_ENABLE
- #include "vibrato_lut.h"
-#endif
+#define CPU_PRESCALER 8
-#define PI 3.14159265
+// -----------------------------------------------------------------------------
+// Timer Abstractions
+// -----------------------------------------------------------------------------
-#define CPU_PRESCALER 8
+// TIMSK3 - Timer/Counter #3 Interrupt Mask Register
+// Turn on/off 3A interputs, stopping/enabling the ISR calls
+#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
+#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
-#ifdef PWM_AUDIO
- #include "wave.h"
- #define SAMPLE_DIVIDER 39
- #define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048)
- // Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap
+// TCCR3A: Timer/Counter #3 Control Register
+// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
+#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
- float places[8] = {0, 0, 0, 0, 0, 0, 0, 0};
- uint16_t place_int = 0;
- bool repeat = true;
-#endif
+// Fast PWM Mode Controls
+#define TIMER_3_PERIOD ICR3
+#define TIMER_3_DUTY_CYCLE OCR3A
+
+// -----------------------------------------------------------------------------
-void delay_us(int count) {
- while(count--) {
- _delay_us(1);
- }
-}
int voices = 0;
int voice_place = 0;
@@ -45,26 +43,23 @@ 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;
-int max = 0xFF;
-float sum = 0;
float place = 0;
uint8_t * sample;
uint16_t sample_length = 0;
-// float freq = 0;
-
-bool notes = false;
-bool note = false;
-float note_frequency = 0;
-float note_length = 0;
-float note_tempo = TEMPO_DEFAULT;
-float note_timbre = TIMBRE_DEFAULT;
+
+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;
-float notes_rest;
-bool note_resting = false;
+bool notes_repeat;
+float notes_rest;
+bool note_resting = false;
uint8_t current_note = 0;
uint8_t rest_counter = 0;
@@ -77,175 +72,65 @@ float vibrato_rate = 0.125;
float polyphony_rate = 0;
-bool inited = false;
+static bool audio_initialized = false;
audio_config_t audio_config;
uint16_t envelope_index = 0;
-void audio_toggle(void) {
- audio_config.enable ^= 1;
- eeconfig_update_audio(audio_config.raw);
-}
-
-void audio_on(void) {
- audio_config.enable = 1;
- eeconfig_update_audio(audio_config.raw);
-}
-
-void audio_off(void) {
- 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
-
-#endif
-
-// 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(float tempo) {
- note_tempo = tempo;
-}
-
-void decrease_tempo(uint8_t tempo_change) {
- note_tempo += (float) tempo_change;
-}
-
-void increase_tempo(uint8_t tempo_change) {
- if (note_tempo - (float) tempo_change < 10) {
- note_tempo = 10;
- } else {
- note_tempo -= (float) tempo_change;
- }
-}
-
-void audio_init() {
+void audio_init()
+{
- /* check signature */
- if (!eeconfig_is_enabled()) {
+ // Check EEPROM
+ if (!eeconfig_is_enabled())
+ {
eeconfig_init();
}
audio_config.raw = eeconfig_read_audio();
- #ifdef PWM_AUDIO
- PLLFRQ = _BV(PDIV2);
- PLLCSR = _BV(PLLE);
- while(!(PLLCSR & _BV(PLOCK)));
- PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */
-
- /* Init a fast PWM on Timer4 */
- TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */
- TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */
- OCR4A = 0;
+ // Set port PC6 (OC3A and /OC4A) as output
+ DDRC |= _BV(PORTC6);
- /* Enable the OC4A output */
- DDRC |= _BV(PORTC6);
+ DISABLE_AUDIO_COUNTER_3_ISR;
- TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
-
- TCCR3A = 0x0; // Options not needed
- TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC
- OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback
- #else
- DDRC |= _BV(PORTC6);
-
- TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
-
- TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
- TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
- #endif
+ // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
+ // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+ // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
+ // Clock Select (CS3n) = 0b010 = Clock / 8
+ TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+ TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
- inited = true;
+ audio_initialized = true;
}
-void stop_all_notes() {
- if (!inited) {
+void stop_all_notes()
+{
+ if (!audio_initialized) {
audio_init();
}
voices = 0;
- #ifdef PWM_AUDIO
- TIMSK3 &= ~_BV(OCIE3A);
- #else
- TIMSK3 &= ~_BV(OCIE3A);
- TCCR3A &= ~_BV(COM3A1);
- #endif
- notes = false;
- note = false;
+
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ DISABLE_AUDIO_COUNTER_3_OUTPUT;
+
+ playing_notes = false;
+ playing_note = false;
frequency = 0;
volume = 0;
- for (int i = 0; i < 8; i++) {
+ for (uint8_t i = 0; i < 8; i++)
+ {
frequencies[i] = 0;
volumes[i] = 0;
}
}
-void stop_note(float freq) {
- if (note) {
- if (!inited) {
+void stop_note(float freq)
+{
+ if (playing_note) {
+ if (!audio_initialized) {
audio_init();
}
- #ifdef PWM_AUDIO
- freq = freq / SAMPLE_RATE;
- #endif
for (int i = 7; i >= 0; i--) {
if (frequencies[i] == freq) {
frequencies[i] = 0;
@@ -266,15 +151,11 @@ void stop_note(float freq) {
voice_place = 0;
}
if (voices == 0) {
- #ifdef PWM_AUDIO
- TIMSK3 &= ~_BV(OCIE3A);
- #else
- TIMSK3 &= ~_BV(OCIE3A);
- TCCR3A &= ~_BV(COM3A1);
- #endif
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ DISABLE_AUDIO_COUNTER_3_OUTPUT;
frequency = 0;
volume = 0;
- note = false;
+ playing_note = false;
}
}
}
@@ -289,9 +170,9 @@ float mod(float a, int b)
float vibrato(float average_freq) {
#ifdef VIBRATO_STRENGTH_ENABLE
- float vibrated_freq = average_freq * pow(VIBRATO_LUT[(int)vibrato_counter], vibrato_strength);
+ float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
#else
- float vibrated_freq = average_freq * VIBRATO_LUT[(int)vibrato_counter];
+ 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;
@@ -299,295 +180,299 @@ float vibrato(float average_freq) {
#endif
-ISR(TIMER3_COMPA_vect) {
- if (note) {
- #ifdef PWM_AUDIO
- if (voices == 1) {
- // SINE
- OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2;
-
- // SQUARE
- // if (((int)place) >= 1024){
- // OCR4A = 0xFF >> 2;
- // } else {
- // OCR4A = 0x00;
- // }
-
- // SAWTOOTH
- // OCR4A = (int)place / 4;
-
- // TRIANGLE
- // if (((int)place) >= 1024) {
- // OCR4A = (int)place / 2;
- // } else {
- // OCR4A = 2048 - (int)place / 2;
- // }
-
- place += frequency;
-
- if (place >= SINE_LENGTH)
- place -= SINE_LENGTH;
-
- } else {
- int sum = 0;
- for (int i = 0; i < voices; i++) {
- // SINE
- sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2;
-
- // SQUARE
- // if (((int)places[i]) >= 1024){
- // sum += 0xFF >> 2;
- // } else {
- // sum += 0x00;
- // }
-
- places[i] += frequencies[i];
-
- if (places[i] >= SINE_LENGTH)
- places[i] -= SINE_LENGTH;
- }
- OCR4A = sum;
- }
- #else
- if (voices > 0) {
- float freq;
- 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 {
- #else
- {
- #endif
- freq = frequencies[voice_place];
- }
- } 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 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];
- }
-
-
- #ifdef VIBRATO_ENABLE
- if (vibrato_strength > 0) {
- freq = vibrato(frequency);
- } else {
- #else
- {
- #endif
- freq = frequency;
- }
- }
+ISR(TIMER3_COMPA_vect)
+{
+ float freq;
+
+ 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 (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];
+ }
+
+ #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) {
+ end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF));
+ } else {
+ end_of_note = (note_position >= (note_length * 0x7FF));
+ }
+
+ 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 && (notes_rest > 0)) {
+ note_resting = true;
+ note_frequency = 0;
+ note_length = notes_rest;
+ current_note--;
+ } 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;
+ }
+}
- if (envelope_index < 65535) {
- envelope_index++;
- }
- freq = voice_envelope(freq);
+void play_note(float freq, int vol) {
- if (freq < 30.517578125)
- freq = 30.52;
- ICR3 = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
- OCR3A = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
- }
- #endif
+ if (!audio_initialized) {
+ audio_init();
}
- // SAMPLE
- // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]);
-
- // place_int++;
-
- // if (place_int >= sample_length)
- // if (repeat)
- // place_int -= sample_length;
- // else
- // TIMSK3 &= ~_BV(OCIE3A);
-
-
- if (notes) {
- #ifdef PWM_AUDIO
- OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0;
-
- place += note_frequency;
- if (place >= SINE_LENGTH)
- place -= SINE_LENGTH;
- #else
- if (note_frequency > 0) {
- float freq;
-
- #ifdef VIBRATO_ENABLE
- if (vibrato_strength > 0) {
- freq = vibrato(note_frequency);
- } else {
- #else
- {
- #endif
- freq = note_frequency;
- }
+ if (audio_config.enable && voices < 8) {
+ DISABLE_AUDIO_COUNTER_3_ISR;
- if (envelope_index < 65535) {
- envelope_index++;
- }
- freq = voice_envelope(freq);
+ // Cancel notes if notes are playing
+ if (playing_notes)
+ stop_all_notes();
- ICR3 = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
- OCR3A = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
- } else {
- ICR3 = 0;
- OCR3A = 0;
- }
- #endif
-
-
- note_position++;
- bool end_of_note = false;
- if (ICR3 > 0)
- end_of_note = (note_position >= (note_length / ICR3 * 0xFFFF));
- else
- end_of_note = (note_position >= (note_length * 0x7FF));
- if (end_of_note) {
- current_note++;
- if (current_note >= notes_count) {
- if (notes_repeat) {
- current_note = 0;
- } else {
- #ifdef PWM_AUDIO
- TIMSK3 &= ~_BV(OCIE3A);
- #else
- TIMSK3 &= ~_BV(OCIE3A);
- TCCR3A &= ~_BV(COM3A1);
- #endif
- notes = false;
- return;
- }
- }
- if (!note_resting && (notes_rest > 0)) {
- note_resting = true;
- note_frequency = 0;
- note_length = notes_rest;
- current_note--;
- } else {
- note_resting = false;
- #ifdef PWM_AUDIO
- note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
- note_length = (*notes_pointer)[current_note][1] * (note_tempo / 100);
- #else
- envelope_index = 0;
- note_frequency = (*notes_pointer)[current_note][0];
- note_length = ((*notes_pointer)[current_note][1] / 4) * (note_tempo / 100);
- #endif
- }
- note_position = 0;
- }
+ playing_note = true;
- }
+ envelope_index = 0;
+
+ if (freq > 0) {
+ frequencies[voices] = freq;
+ volumes[voices] = vol;
+ voices++;
+ }
+
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ ENABLE_AUDIO_COUNTER_3_OUTPUT;
+ }
- if (!audio_config.enable) {
- notes = false;
- note = false;
- }
}
-void play_note(float freq, int vol) {
+void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
+{
- if (!inited) {
+ if (!audio_initialized) {
audio_init();
}
-if (audio_config.enable && voices < 8) {
- TIMSK3 &= ~_BV(OCIE3A);
- // Cancel notes if notes are playing
- if (notes)
- stop_all_notes();
- note = true;
- envelope_index = 0;
- #ifdef PWM_AUDIO
- freq = freq / SAMPLE_RATE;
- #endif
- if (freq > 0) {
- frequencies[voices] = freq;
- volumes[voices] = vol;
- voices++;
- }
+ if (audio_config.enable) {
+
+ DISABLE_AUDIO_COUNTER_3_ISR;
+
+ // 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;
+ notes_rest = n_rest;
+
+ 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;
+
+
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ ENABLE_AUDIO_COUNTER_3_OUTPUT;
+ }
- #ifdef PWM_AUDIO
- TIMSK3 |= _BV(OCIE3A);
- #else
- TIMSK3 |= _BV(OCIE3A);
- TCCR3A |= _BV(COM3A1);
- #endif
}
+bool is_playing_notes(void) {
+ return playing_notes;
}
-void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) {
+bool is_audio_on(void) {
+ return (audio_config.enable != 0);
+}
- if (!inited) {
- audio_init();
- }
+void audio_toggle(void) {
+ audio_config.enable ^= 1;
+ eeconfig_update_audio(audio_config.raw);
+}
-if (audio_config.enable) {
- TIMSK3 &= ~_BV(OCIE3A);
- // Cancel note if a note is playing
- if (note)
- stop_all_notes();
- notes = true;
-
- notes_pointer = np;
- notes_count = n_count;
- notes_repeat = n_repeat;
- notes_rest = n_rest;
-
- place = 0;
- current_note = 0;
- #ifdef PWM_AUDIO
- note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
- note_length = (*notes_pointer)[current_note][1] * (note_tempo / 100);
- #else
- note_frequency = (*notes_pointer)[current_note][0];
- note_length = ((*notes_pointer)[current_note][1] / 4) * (note_tempo / 100);
- #endif
- note_position = 0;
+void audio_on(void) {
+ audio_config.enable = 1;
+ eeconfig_update_audio(audio_config.raw);
+}
+
+void audio_off(void) {
+ audio_config.enable = 0;
+ eeconfig_update_audio(audio_config.raw);
+}
+#ifdef VIBRATO_ENABLE
- #ifdef PWM_AUDIO
- TIMSK3 |= _BV(OCIE3A);
- #else
- TIMSK3 |= _BV(OCIE3A);
- TCCR3A |= _BV(COM3A1);
- #endif
+// Vibrato rate functions
+
+void set_vibrato_rate(float rate) {
+ vibrato_rate = rate;
}
+void increase_vibrato_rate(float change) {
+ vibrato_rate *= change;
}
-#ifdef PWM_AUDIO
-void play_sample(uint8_t * s, uint16_t l, bool r) {
- if (!inited) {
- audio_init();
- }
+void decrease_vibrato_rate(float change) {
+ vibrato_rate /= change;
+}
- if (audio_config.enable) {
- TIMSK3 &= ~_BV(OCIE3A);
- stop_all_notes();
- place_int = 0;
- sample = s;
- sample_length = l;
- repeat = r;
+#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 */
- TIMSK3 |= _BV(OCIE3A);
+// 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;
}
}
-#endif
+
//------------------------------------------------------------------------------
// Override these functions in your keymap file to play different tunes on
@@ -597,11 +482,8 @@ void play_startup_tone()
{
}
-
-
__attribute__ ((weak))
void play_goodbye_tone()
{
-
}
//------------------------------------------------------------------------------
diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h
index 89769507e1..4ba879bbb1 100644
--- a/quantum/audio/audio.h
+++ b/quantum/audio/audio.h
@@ -25,6 +25,7 @@ typedef union {
};
} audio_config_t;
+bool is_audio_on(void);
void audio_toggle(void);
void audio_on(void);
void audio_off(void);
@@ -56,7 +57,7 @@ void increase_polyphony_rate(float change);
void decrease_polyphony_rate(float change);
void set_timbre(float timbre);
-void set_tempo(float tempo);
+void set_tempo(uint8_t tempo);
void increase_tempo(uint8_t tempo_change);
void decrease_tempo(uint8_t tempo_change);
@@ -71,11 +72,11 @@ void stop_note(float freq);
void stop_all_notes(void);
void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest);
-#define SCALE (int []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
- 0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
- 0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
- 0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
- 0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
+#define SCALE (int8_t []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \
+ 0 + (12*1), 2 + (12*1), 4 + (12*1), 5 + (12*1), 7 + (12*1), 9 + (12*1), 11 + (12*1), \
+ 0 + (12*2), 2 + (12*2), 4 + (12*2), 5 + (12*2), 7 + (12*2), 9 + (12*2), 11 + (12*2), \
+ 0 + (12*3), 2 + (12*3), 4 + (12*3), 5 + (12*3), 7 + (12*3), 9 + (12*3), 11 + (12*3), \
+ 0 + (12*4), 2 + (12*4), 4 + (12*4), 5 + (12*4), 7 + (12*4), 9 + (12*4), 11 + (12*4), }
// These macros are used to allow play_notes to play an array of indeterminate
// length. This works around the limitation of C's sizeof operation on pointers.
@@ -83,7 +84,11 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
#define NOTE_ARRAY_SIZE(x) ((int16_t)(sizeof(x) / (sizeof(x[0]))))
#define PLAY_NOTE_ARRAY(note_array, note_repeat, note_rest_style) play_notes(&note_array, NOTE_ARRAY_SIZE((note_array)), (note_repeat), (note_rest_style));
+
+bool is_playing_notes(void);
void play_goodbye_tone(void);
void play_startup_tone(void);
+
+
#endif \ No newline at end of file
diff --git a/quantum/audio/audio_pwm.c b/quantum/audio/audio_pwm.c
new file mode 100644
index 0000000000..328a253a7e
--- /dev/null
+++ b/quantum/audio/audio_pwm.c
@@ -0,0 +1,643 @@
+#include <stdio.h>
+#include <string.h>
+//#include <math.h>
+#include <avr/pgmspace.h>
+#include <avr/interrupt.h>
+#include <avr/io.h>
+#include "print.h"
+#include "audio.h"
+#include "keymap_common.h"
+
+#include "eeconfig.h"
+
+#define PI 3.14159265
+
+#define CPU_PRESCALER 8
+
+
+// Timer Abstractions
+
+// TIMSK3 - Timer/Counter #3 Interrupt Mask Register
+// Turn on/off 3A interputs, stopping/enabling the ISR calls
+#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
+#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
+
+
+// TCCR3A: Timer/Counter #3 Control Register
+// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
+#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
+
+
+#define NOTE_PERIOD ICR3
+#define NOTE_DUTY_CYCLE OCR3A
+
+
+#ifdef PWM_AUDIO
+ #include "wave.h"
+ #define SAMPLE_DIVIDER 39
+ #define SAMPLE_RATE (2000000.0/SAMPLE_DIVIDER/2048)
+ // Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap
+
+ float places[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+ uint16_t place_int = 0;
+ bool repeat = true;
+#endif
+
+void delay_us(int count) {
+ while(count--) {
+ _delay_us(1);
+ }
+}
+
+int voices = 0;
+int voice_place = 0;
+float frequency = 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;
+// float freq = 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;
+float notes_rest;
+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;
+
+void audio_init() {
+
+ // Check EEPROM
+ if (!eeconfig_is_enabled())
+ {
+ eeconfig_init();
+ }
+ audio_config.raw = eeconfig_read_audio();
+
+ #ifdef PWM_AUDIO
+
+ PLLFRQ = _BV(PDIV2);
+ PLLCSR = _BV(PLLE);
+ while(!(PLLCSR & _BV(PLOCK)));
+ PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */
+
+ /* Init a fast PWM on Timer4 */
+ TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */
+ TCCR4B = _BV(CS40); /* No prescaling => f = PCK/256 = 187500Hz */
+ OCR4A = 0;
+
+ /* Enable the OC4A output */
+ DDRC |= _BV(PORTC6);
+
+ DISABLE_AUDIO_COUNTER_3_ISR; // Turn off 3A interputs
+
+ TCCR3A = 0x0; // Options not needed
+ TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32); // 64th prescaling and CTC
+ OCR3A = SAMPLE_DIVIDER - 1; // Correct count/compare, related to sample playback
+
+ #else
+
+ // Set port PC6 (OC3A and /OC4A) as output
+ DDRC |= _BV(PORTC6);
+
+ DISABLE_AUDIO_COUNTER_3_ISR;
+
+ // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
+ // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
+ // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
+ // Clock Select (CS3n) = 0b010 = Clock / 8
+ TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+ TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
+
+ #endif
+
+ audio_initialized = true;
+}
+
+void stop_all_notes() {
+ if (!audio_initialized) {
+ audio_init();
+ }
+ voices = 0;
+ #ifdef PWM_AUDIO
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ #else
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ DISABLE_AUDIO_COUNTER_3_OUTPUT;
+ #endif
+
+ playing_notes = false;
+ playing_note = false;
+ frequency = 0;
+ volume = 0;
+
+ for (uint8_t i = 0; i < 8; i++)
+ {
+ frequencies[i] = 0;
+ volumes[i] = 0;
+ }
+}
+
+void stop_note(float freq)
+{
+ if (playing_note) {
+ if (!audio_initialized) {
+ audio_init();
+ }
+ #ifdef PWM_AUDIO
+ freq = freq / SAMPLE_RATE;
+ #endif
+ 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 PWM_AUDIO
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ #else
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ DISABLE_AUDIO_COUNTER_3_OUTPUT;
+ #endif
+ frequency = 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
+
+ISR(TIMER3_COMPA_vect)
+{
+ if (playing_note) {
+ #ifdef PWM_AUDIO
+ if (voices == 1) {
+ // SINE
+ OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2;
+
+ // SQUARE
+ // if (((int)place) >= 1024){
+ // OCR4A = 0xFF >> 2;
+ // } else {
+ // OCR4A = 0x00;
+ // }
+
+ // SAWTOOTH
+ // OCR4A = (int)place / 4;
+
+ // TRIANGLE
+ // if (((int)place) >= 1024) {
+ // OCR4A = (int)place / 2;
+ // } else {
+ // OCR4A = 2048 - (int)place / 2;
+ // }
+
+ place += frequency;
+
+ if (place >= SINE_LENGTH)
+ place -= SINE_LENGTH;
+
+ } else {
+ int sum = 0;
+ for (int i = 0; i < voices; i++) {
+ // SINE
+ sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2;
+
+ // SQUARE
+ // if (((int)places[i]) >= 1024){
+ // sum += 0xFF >> 2;
+ // } else {
+ // sum += 0x00;
+ // }
+
+ places[i] += frequencies[i];
+
+ if (places[i] >= SINE_LENGTH)
+ places[i] -= SINE_LENGTH;
+ }
+ OCR4A = sum;
+ }
+ #else
+ if (voices > 0) {
+ float freq;
+ 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 {
+ #else
+ {
+ #endif
+ freq = frequencies[voice_place];
+ }
+ } 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 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];
+ }
+
+
+ #ifdef VIBRATO_ENABLE
+ if (vibrato_strength > 0) {
+ freq = vibrato(frequency);
+ } else {
+ #else
+ {
+ #endif
+ freq = frequency;
+ }
+ }
+
+ if (envelope_index < 65535) {
+ envelope_index++;
+ }
+ freq = voice_envelope(freq);
+
+ if (freq < 30.517578125)
+ freq = 30.52;
+ NOTE_PERIOD = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
+ NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
+ }
+ #endif
+ }
+
+ // SAMPLE
+ // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]);
+
+ // place_int++;
+
+ // if (place_int >= sample_length)
+ // if (repeat)
+ // place_int -= sample_length;
+ // else
+ // DISABLE_AUDIO_COUNTER_3_ISR;
+
+
+ if (playing_notes) {
+ #ifdef PWM_AUDIO
+ OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0;
+
+ place += note_frequency;
+ if (place >= SINE_LENGTH)
+ place -= SINE_LENGTH;
+ #else
+ if (note_frequency > 0) {
+ float freq;
+
+ #ifdef VIBRATO_ENABLE
+ if (vibrato_strength > 0) {
+ freq = vibrato(note_frequency);
+ } else {
+ #else
+ {
+ #endif
+ freq = note_frequency;
+ }
+
+ if (envelope_index < 65535) {
+ envelope_index++;
+ }
+ freq = voice_envelope(freq);
+
+ NOTE_PERIOD = (int)(((double)F_CPU) / (freq * CPU_PRESCALER)); // Set max to the period
+ NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre); // Set compare to half the period
+ } else {
+ NOTE_PERIOD = 0;
+ NOTE_DUTY_CYCLE = 0;
+ }
+ #endif
+
+
+ note_position++;
+ bool end_of_note = false;
+ if (NOTE_PERIOD > 0)
+ end_of_note = (note_position >= (note_length / NOTE_PERIOD * 0xFFFF));
+ else
+ end_of_note = (note_position >= (note_length * 0x7FF));
+ if (end_of_note) {
+ current_note++;
+ if (current_note >= notes_count) {
+ if (notes_repeat) {
+ current_note = 0;
+ } else {
+ #ifdef PWM_AUDIO
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ #else
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ DISABLE_AUDIO_COUNTER_3_OUTPUT;
+ #endif
+ playing_notes = false;
+ return;
+ }
+ }
+ if (!note_resting && (notes_rest > 0)) {
+ note_resting = true;
+ note_frequency = 0;
+ note_length = notes_rest;
+ current_note--;
+ } else {
+ note_resting = false;
+ #ifdef PWM_AUDIO
+ note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
+ note_length = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100);
+ #else
+ envelope_index = 0;
+ note_frequency = (*notes_pointer)[current_note][0];
+ note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+ #endif
+ }
+ note_position = 0;
+ }
+
+ }
+
+ if (!audio_config.enable) {
+ playing_notes = false;
+ playing_note = false;
+ }
+}
+
+void play_note(float freq, int vol) {
+
+ if (!audio_initialized) {
+ audio_init();
+ }
+
+ if (audio_config.enable && voices < 8) {
+ DISABLE_AUDIO_COUNTER_3_ISR;
+
+ // Cancel notes if notes are playing
+ if (playing_notes)
+ stop_all_notes();
+
+ playing_note = true;
+
+ envelope_index = 0;
+
+ #ifdef PWM_AUDIO
+ freq = freq / SAMPLE_RATE;
+ #endif
+ if (freq > 0) {
+ frequencies[voices] = freq;
+ volumes[voices] = vol;
+ voices++;
+ }
+
+ #ifdef PWM_AUDIO
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ #else
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ ENABLE_AUDIO_COUNTER_3_OUTPUT;
+ #endif
+ }
+
+}
+
+void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
+{
+
+ if (!audio_initialized) {
+ audio_init();
+ }
+
+ if (audio_config.enable) {
+
+ DISABLE_AUDIO_COUNTER_3_ISR;
+
+ // 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;
+ notes_rest = n_rest;
+
+ place = 0;
+ current_note = 0;
+
+ #ifdef PWM_AUDIO
+ note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
+ note_length = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100);
+ #else
+ note_frequency = (*notes_pointer)[current_note][0];
+ note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
+ #endif
+ note_position = 0;
+
+
+ #ifdef PWM_AUDIO
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ #else
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ ENABLE_AUDIO_COUNTER_3_OUTPUT;
+ #endif
+ }
+
+}
+
+#ifdef PWM_AUDIO
+void play_sample(uint8_t * s, uint16_t l, bool r) {
+ if (!audio_initialized) {
+ audio_init();
+ }
+
+ if (audio_config.enable) {
+ DISABLE_AUDIO_COUNTER_3_ISR;
+ stop_all_notes();
+ place_int = 0;
+ sample = s;
+ sample_length = l;
+ repeat = r;
+
+ ENABLE_AUDIO_COUNTER_3_ISR;
+ }
+}
+#endif
+
+
+void audio_toggle(void) {
+ audio_config.enable ^= 1;
+ eeconfig_update_audio(audio_config.raw);
+}
+
+void audio_on(void) {
+ audio_config.enable = 1;
+ eeconfig_update_audio(audio_config.raw);
+}
+
+void audio_off(void) {
+ 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;
+ }
+}
+
+
+//------------------------------------------------------------------------------
+// Override these functions in your keymap file to play different tunes on
+// startup and bootloader jump
+__attribute__ ((weak))
+void play_startup_tone()
+{
+}
+
+__attribute__ ((weak))
+void play_goodbye_tone()
+{
+}
+//------------------------------------------------------------------------------
diff --git a/quantum/audio/luts.c b/quantum/audio/luts.c
new file mode 100644
index 0000000000..9f3de9a05c
--- /dev/null
+++ b/quantum/audio/luts.c
@@ -0,0 +1,382 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+#include "luts.h"
+
+const float vibrato_lut[VIBRATO_LUT_LENGTH] =
+{
+ 1.0022336811487,
+ 1.0042529943610,
+ 1.0058584256028,
+ 1.0068905285205,
+ 1.0072464122237,
+ 1.0068905285205,
+ 1.0058584256028,
+ 1.0042529943610,
+ 1.0022336811487,
+ 1.0000000000000,
+ 0.9977712970630,
+ 0.9957650169978,
+ 0.9941756956510,
+ 0.9931566259436,
+ 0.9928057204913,
+ 0.9931566259436,
+ 0.9941756956510,
+ 0.9957650169978,
+ 0.9977712970630,
+ 1.0000000000000,
+};
+
+const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH] =
+{
+ 0x8E0B,
+ 0x8C02,
+ 0x8A00,
+ 0x8805,
+ 0x8612,
+ 0x8426,
+ 0x8241,
+ 0x8063,
+ 0x7E8C,
+ 0x7CBB,
+ 0x7AF2,
+ 0x792E,
+ 0x7772,
+ 0x75BB,
+ 0x740B,
+ 0x7261,
+ 0x70BD,
+ 0x6F20,
+ 0x6D88,
+ 0x6BF6,
+ 0x6A69,
+ 0x68E3,
+ 0x6762,
+ 0x65E6,
+ 0x6470,
+ 0x6300,
+ 0x6194,
+ 0x602E,
+ 0x5ECD,
+ 0x5D71,
+ 0x5C1A,
+ 0x5AC8,
+ 0x597B,
+ 0x5833,
+ 0x56EF,
+ 0x55B0,
+ 0x5475,
+ 0x533F,
+ 0x520E,
+ 0x50E1,
+ 0x4FB8,
+ 0x4E93,
+ 0x4D73,
+ 0x4C57,
+ 0x4B3E,
+ 0x4A2A,
+ 0x491A,
+ 0x480E,
+ 0x4705,
+ 0x4601,
+ 0x4500,
+ 0x4402,
+ 0x4309,
+ 0x4213,
+ 0x4120,
+ 0x4031,
+ 0x3F46,
+ 0x3E5D,
+ 0x3D79,
+ 0x3C97,
+ 0x3BB9,
+ 0x3ADD,
+ 0x3A05,
+ 0x3930,
+ 0x385E,
+ 0x3790,
+ 0x36C4,
+ 0x35FB,
+ 0x3534,
+ 0x3471,
+ 0x33B1,
+ 0x32F3,
+ 0x3238,
+ 0x3180,
+ 0x30CA,
+ 0x3017,
+ 0x2F66,
+ 0x2EB8,
+ 0x2E0D,
+ 0x2D64,
+ 0x2CBD,
+ 0x2C19,
+ 0x2B77,
+ 0x2AD8,
+ 0x2A3A,
+ 0x299F,
+ 0x2907,
+ 0x2870,
+ 0x27DC,
+ 0x2749,
+ 0x26B9,
+ 0x262B,
+ 0x259F,
+ 0x2515,
+ 0x248D,
+ 0x2407,
+ 0x2382,
+ 0x2300,
+ 0x2280,
+ 0x2201,
+ 0x2184,
+ 0x2109,
+ 0x2090,
+ 0x2018,
+ 0x1FA3,
+ 0x1F2E,
+ 0x1EBC,
+ 0x1E4B,
+ 0x1DDC,
+ 0x1D6E,
+ 0x1D02,
+ 0x1C98,
+ 0x1C2F,
+ 0x1BC8,
+ 0x1B62,
+ 0x1AFD,
+ 0x1A9A,
+ 0x1A38,
+ 0x19D8,
+ 0x1979,
+ 0x191C,
+ 0x18C0,
+ 0x1865,
+ 0x180B,
+ 0x17B3,
+ 0x175C,
+ 0x1706,
+ 0x16B2,
+ 0x165E,
+ 0x160C,
+ 0x15BB,
+ 0x156C,
+ 0x151D,
+ 0x14CF,
+ 0x1483,
+ 0x1438,
+ 0x13EE,
+ 0x13A4,
+ 0x135C,
+ 0x1315,
+ 0x12CF,
+ 0x128A,
+ 0x1246,
+ 0x1203,
+ 0x11C1,
+ 0x1180,
+ 0x1140,
+ 0x1100,
+ 0x10C2,
+ 0x1084,
+ 0x1048,
+ 0x100C,
+ 0xFD1,
+ 0xF97,
+ 0xF5E,
+ 0xF25,
+ 0xEEE,
+ 0xEB7,
+ 0xE81,
+ 0xE4C,
+ 0xE17,
+ 0xDE4,
+ 0xDB1,
+ 0xD7E,
+ 0xD4D,
+ 0xD1C,
+ 0xCEC,
+ 0xCBC,
+ 0xC8E,
+ 0xC60,
+ 0xC32,
+ 0xC05,
+ 0xBD9,
+ 0xBAE,
+ 0xB83,
+ 0xB59,
+ 0xB2F,
+ 0xB06,
+ 0xADD,
+ 0xAB6,
+ 0xA8E,
+ 0xA67,
+ 0xA41,
+ 0xA1C,
+ 0x9F7,
+ 0x9D2,
+ 0x9AE,
+ 0x98A,
+ 0x967,
+ 0x945,
+ 0x923,
+ 0x901,
+ 0x8E0,
+ 0x8C0,
+ 0x8A0,
+ 0x880,
+ 0x861,
+ 0x842,
+ 0x824,
+ 0x806,
+ 0x7E8,
+ 0x7CB,
+ 0x7AF,
+ 0x792,
+ 0x777,
+ 0x75B,
+ 0x740,
+ 0x726,
+ 0x70B,
+ 0x6F2,
+ 0x6D8,
+ 0x6BF,
+ 0x6A6,
+ 0x68E,
+ 0x676,
+ 0x65E,
+ 0x647,
+ 0x630,
+ 0x619,
+ 0x602,
+ 0x5EC,
+ 0x5D7,
+ 0x5C1,
+ 0x5AC,
+ 0x597,
+ 0x583,
+ 0x56E,
+ 0x55B,
+ 0x547,
+ 0x533,
+ 0x520,
+ 0x50E,
+ 0x4FB,
+ 0x4E9,
+ 0x4D7,
+ 0x4C5,
+ 0x4B3,
+ 0x4A2,
+ 0x491,
+ 0x480,
+ 0x470,
+ 0x460,
+ 0x450,
+ 0x440,
+ 0x430,
+ 0x421,
+ 0x412,
+ 0x403,
+ 0x3F4,
+ 0x3E5,
+ 0x3D7,
+ 0x3C9,
+ 0x3BB,
+ 0x3AD,
+ 0x3A0,
+ 0x393,
+ 0x385,
+ 0x379,
+ 0x36C,
+ 0x35F,
+ 0x353,
+ 0x347,
+ 0x33B,
+ 0x32F,
+ 0x323,
+ 0x318,
+ 0x30C,
+ 0x301,
+ 0x2F6,
+ 0x2EB,
+ 0x2E0,
+ 0x2D6,
+ 0x2CB,
+ 0x2C1,
+ 0x2B7,
+ 0x2AD,
+ 0x2A3,
+ 0x299,
+ 0x290,
+ 0x287,
+ 0x27D,
+ 0x274,
+ 0x26B,
+ 0x262,
+ 0x259,
+ 0x251,
+ 0x248,
+ 0x240,
+ 0x238,
+ 0x230,
+ 0x228,
+ 0x220,
+ 0x218,
+ 0x210,
+ 0x209,
+ 0x201,
+ 0x1FA,
+ 0x1F2,
+ 0x1EB,
+ 0x1E4,
+ 0x1DD,
+ 0x1D6,
+ 0x1D0,
+ 0x1C9,
+ 0x1C2,
+ 0x1BC,
+ 0x1B6,
+ 0x1AF,
+ 0x1A9,
+ 0x1A3,
+ 0x19D,
+ 0x197,
+ 0x191,
+ 0x18C,
+ 0x186,
+ 0x180,
+ 0x17B,
+ 0x175,
+ 0x170,
+ 0x16B,
+ 0x165,
+ 0x160,
+ 0x15B,
+ 0x156,
+ 0x151,
+ 0x14C,
+ 0x148,
+ 0x143,
+ 0x13E,
+ 0x13A,
+ 0x135,
+ 0x131,
+ 0x12C,
+ 0x128,
+ 0x124,
+ 0x120,
+ 0x11C,
+ 0x118,
+ 0x114,
+ 0x110,
+ 0x10C,
+ 0x108,
+ 0x104,
+ 0x100,
+ 0xFD,
+ 0xF9,
+ 0xF5,
+ 0xF2,
+ 0xEE,
+};
+
diff --git a/quantum/audio/luts.h b/quantum/audio/luts.h
new file mode 100644
index 0000000000..7df3078a7f
--- /dev/null
+++ b/quantum/audio/luts.h
@@ -0,0 +1,15 @@
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/pgmspace.h>
+
+#ifndef LUTS_H
+#define LUTS_H
+
+#define VIBRATO_LUT_LENGTH 20
+
+#define FREQUENCY_LUT_LENGTH 349
+
+extern const float vibrato_lut[VIBRATO_LUT_LENGTH];
+extern const uint16_t frequency_lut[FREQUENCY_LUT_LENGTH];
+
+#endif /* LUTS_H */ \ No newline at end of file
diff --git a/quantum/audio/vibrato_lut.h b/quantum/audio/vibrato_lut.h
deleted file mode 100644
index a2b1f3e5ce..0000000000
--- a/quantum/audio/vibrato_lut.h
+++ /dev/null
@@ -1,28 +0,0 @@
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <avr/pgmspace.h>
-
-#define VIBRATO_LUT_LENGTH 20
-
-const float VIBRATO_LUT[VIBRATO_LUT_LENGTH] = { \
-1.00223368114872,
-1.00425299436105,
-1.00585842560279,
-1.00689052852052,
-1.0072464122237,
-1.00689052852052,
-1.00585842560279,
-1.00425299436105,
-1.00223368114872,
-1,
-0.99777129706302,
-0.99576501699778,
-0.994175695650927,
-0.993156625943589,
-0.992805720491269,
-0.993156625943589,
-0.994175695650927,
-0.99576501699778,
-0.99777129706302,
-1
-}; \ No newline at end of file
diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
index de9f8ae544..6d4172a06c 100644
--- a/quantum/audio/voices.c
+++ b/quantum/audio/voices.c
@@ -1,4 +1,5 @@
#include "voices.h"
+#include "audio.h"
#include "stdlib.h"
// these are imported from audio.c
@@ -53,28 +54,28 @@ float voice_envelope(float frequency) {
}
break;
- case octave_crunch:
- polyphony_rate = 0;
- switch (compensated_index) {
- case 0 ... 9:
- case 20 ... 24:
- case 30 ... 32:
- frequency = frequency / 2;
- note_timbre = TIMBRE_12;
- break;
-
- case 10 ... 19:
- case 25 ... 29:
- case 33 ... 35:
- frequency = frequency * 2;
- note_timbre = TIMBRE_12;
- break;
-
- default:
- note_timbre = TIMBRE_12;
- break;
- }
- break;
+ // case octave_crunch:
+ // polyphony_rate = 0;
+ // switch (compensated_index) {
+ // case 0 ... 9:
+ // case 20 ... 24:
+ // case 30 ... 32:
+ // frequency = frequency / 2;
+ // note_timbre = TIMBRE_12;
+ // break;
+
+ // case 10 ... 19:
+ // case 25 ... 29:
+ // case 33 ... 35:
+ // frequency = frequency * 2;
+ // note_timbre = TIMBRE_12;
+ // break;
+
+ // default:
+ // note_timbre = TIMBRE_12;
+ // break;
+ // }
+ // break;
case duty_osc:
// This slows the loop down a substantial amount, so higher notes may freeze
@@ -99,6 +100,36 @@ float voice_envelope(float frequency) {
if ((envelope_index % 8) == 0)
note_timbre = 0;
break;
+ case delayed_vibrato:
+ polyphony_rate = 0;
+ note_timbre = TIMBRE_50;
+ #define VOICE_VIBRATO_DELAY 150
+ #define VOICE_VIBRATO_SPEED 50
+ switch (compensated_index) {
+ case 0 ... VOICE_VIBRATO_DELAY:
+ break;
+ default:
+ frequency = frequency * vibrato_lut[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
+ break;
+ }
+ break;
+ // case delayed_vibrato_octave:
+ // polyphony_rate = 0;
+ // if ((envelope_index % 2) == 1) {
+ // note_timbre = 0.55;
+ // } else {
+ // note_timbre = 0.45;
+ // }
+ // #define VOICE_VIBRATO_DELAY 150
+ // #define VOICE_VIBRATO_SPEED 50
+ // switch (compensated_index) {
+ // case 0 ... VOICE_VIBRATO_DELAY:
+ // break;
+ // default:
+ // frequency = frequency * VIBRATO_LUT[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1))/1000*VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
+ // break;
+ // }
+ // break;
// case duty_fifth_down:
// note_timbre = 0.5;
// if ((envelope_index % 3) == 0)
@@ -129,4 +160,6 @@ float voice_envelope(float frequency) {
}
return frequency;
-} \ No newline at end of file
+}
+
+
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
index 4b894f28d4..b2495b23b5 100644
--- a/quantum/audio/voices.h
+++ b/quantum/audio/voices.h
@@ -2,8 +2,7 @@
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
-#include "musical_notes.h"
-#include "song_list.h"
+#include "luts.h"
#ifndef VOICES_H
#define VOICES_H
@@ -16,6 +15,8 @@ typedef enum {
octave_crunch,
duty_osc,
duty_octave_down,
+ delayed_vibrato,
+ // delayed_vibrato_octave,
// duty_fifth_down,
// duty_fourth_down,
// duty_third_down,
generated by cgit v1.2.1 (git 2.18.0) at 2024-12-03 01:42:26 +0000