#include "audio.h"
#include "keymap_common.h"
+#include "eeconfig.h"
+
#define PI 3.14159265
+#define CPU_PRESCALER 8
+
// #define PWM_AUDIO
#ifdef PWM_AUDIO
double frequency = 0;
int volume = 0;
long position = 0;
+int duty_place = 1;
+int duty_counter = 0;
double frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
float (* notes_pointer)[][2];
uint8_t notes_length;
bool notes_repeat;
+float notes_rest;
+bool note_resting = false;
+
uint8_t current_note = 0;
+uint8_t rest_counter = 0;
+
+audio_config_t audio_config;
+
+
+void audio_toggle(void) {
+ audio_config.enable ^= 1;
+ eeconfig_write_audio(audio_config.raw);
+}
+
+void audio_on(void) {
+ audio_config.enable = 1;
+ eeconfig_write_audio(audio_config.raw);
+}
+
+void audio_off(void) {
+ audio_config.enable = 0;
+ eeconfig_write_audio(audio_config.raw);
+}
+
void stop_all_notes() {
voices = 0;
}
void stop_note(double freq) {
- #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;
- }
- }
- }
- voices--;
- if (voices < 0)
- voices = 0;
- if (voices == 0) {
+ if (note) {
#ifdef PWM_AUDIO
- TIMSK3 &= ~_BV(OCIE3A);
- #else
- TIMSK3 &= ~_BV(OCIE3A);
- TCCR3A &= ~_BV(COM3A1);
+ freq = freq / SAMPLE_RATE;
#endif
- frequency = 0;
- volume = 0;
- note = false;
- } else {
- double freq = frequencies[voices - 1];
- int vol = volumes[voices - 1];
- double starting_f = frequency;
- if (frequency < freq) {
- sliding = true;
- for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 2000.0)) {
- frequency = f;
+ 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;
+ }
}
- sliding = false;
- } else if (frequency > freq) {
- sliding = true;
- for (double f = starting_f; f >= freq; f -= ((starting_f - freq) / 2000.0)) {
- frequency = f;
+ }
+ voices--;
+ if (voices < 0)
+ voices = 0;
+ if (voices == 0) {
+ #ifdef PWM_AUDIO
+ TIMSK3 &= ~_BV(OCIE3A);
+ #else
+ TIMSK3 &= ~_BV(OCIE3A);
+ TCCR3A &= ~_BV(COM3A1);
+ #endif
+ frequency = 0;
+ volume = 0;
+ note = false;
+ } else {
+ double freq = frequencies[voices - 1];
+ int vol = volumes[voices - 1];
+ double starting_f = frequency;
+ if (frequency < freq) {
+ sliding = true;
+ for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 2000.0)) {
+ frequency = f;
+ }
+ sliding = false;
+ } else if (frequency > freq) {
+ sliding = true;
+ for (double f = starting_f; f >= freq; f -= ((starting_f - freq) / 2000.0)) {
+ frequency = f;
+ }
+ sliding = false;
}
- sliding = false;
+ frequency = freq;
+ volume = vol;
}
- frequency = freq;
- volume = vol;
}
}
void init_notes() {
+ /* check signature */
+ if (!eeconfig_is_enabled()) {
+ eeconfig_init();
+ }
+ audio_config.raw = eeconfig_read_audio();
+
#ifdef PWM_AUDIO
PLLFRQ = _BV(PDIV2);
PLLCSR = _BV(PLLE);
DDRC |= _BV(PORTC6);
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
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;
if (frequency > 0) {
// ICR3 = (int)(((double)F_CPU) / frequency); // Set max to the period
// OCR3A = (int)(((double)F_CPU) / frequency) >> 1; // Set compare to half the period
- if (place > 10) {
+ voice_place %= voices;
+ if (place > (frequencies[voice_place] / 50)) {
voice_place = (voice_place + 1) % voices;
place = 0.0;
}
- ICR3 = (int)(((double)F_CPU) / frequencies[voice_place]); // Set max to the period
- OCR3A = (int)(((double)F_CPU) / frequencies[voice_place]) >> 1; // Set compare to half the period
+ ICR3 = (int)(((double)F_CPU) / (frequencies[voice_place] * CPU_PRESCALER)); // Set max to the period
+ OCR3A = (int)(((double)F_CPU) / (frequencies[voice_place] * CPU_PRESCALER)) >> 1 * duty_place; // Set compare to half the period
place++;
+ // if (duty_counter > (frequencies[voice_place] / 500)) {
+ // duty_place = (duty_place % 3) + 1;
+ // duty_counter = 0;
+ // }
+ // duty_counter++;
}
#endif
}
place -= SINE_LENGTH;
#else
if (note_frequency > 0) {
- ICR3 = (int)(((double)F_CPU) / note_frequency); // Set max to the period
- OCR3A = (int)(((double)F_CPU) / note_frequency) >> 1; // Set compare to half the period
+ ICR3 = (int)(((double)F_CPU) / (note_frequency * CPU_PRESCALER)); // Set max to the period
+ OCR3A = (int)(((double)F_CPU) / (note_frequency * CPU_PRESCALER)) >> 1; // Set compare to half the period
+ } else {
+ ICR3 = 0;
+ OCR3A = 0;
}
#endif
note_position++;
- if (note_position >= note_length) {
+ 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_length) {
if (notes_repeat) {
return;
}
}
- #ifdef PWM_AUDIO
- note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
- note_length = (*notes_pointer)[current_note][1];
- #else
- note_frequency = (*notes_pointer)[current_note][0];
- note_length = (*notes_pointer)[current_note][1] / 4;
- #endif
+ 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];
+ #else
+ note_frequency = (*notes_pointer)[current_note][0];
+ note_length = (*notes_pointer)[current_note][1] / 4;
+ #endif
+ }
note_position = 0;
}
}
+ if (!audio_config.enable) {
+ notes = false;
+ note = false;
+ }
}
-void play_notes(float (*np)[][2], uint8_t n_length, bool n_repeat) {
+void play_notes(float (*np)[][2], uint8_t n_length, bool n_repeat, float n_rest) {
+
+if (audio_config.enable) {
+
if (note)
stop_all_notes();
- notes = true;
notes_pointer = np;
notes_length = n_length;
notes_repeat = n_repeat;
+ notes_rest = n_rest;
place = 0;
current_note = 0;
TIMSK3 |= _BV(OCIE3A);
TCCR3A |= _BV(COM3A1);
#endif
+
+ notes = true;
+}
+
}
void play_sample(uint8_t * s, uint16_t l, bool r) {
+
+if (audio_config.enable) {
+
stop_all_notes();
place_int = 0;
sample = s;
TIMSK3 |= _BV(OCIE3A);
#else
#endif
+
+}
+
}
void play_note(double freq, int vol) {
+
+if (audio_config.enable && voices < 8) {
+
if (notes)
stop_all_notes();
- note = true;
#ifdef PWM_AUDIO
freq = freq / SAMPLE_RATE;
#endif
if (frequency != 0) {
double starting_f = frequency;
if (frequency < freq) {
- for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 2000.0)) {
+ for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 2000.0)) {
frequency = f;
}
} else if (frequency > freq) {
TCCR3A |= _BV(COM3A1);
#endif
+ note = true;
+}
+
}
\ No newline at end of file
projects / qmk_firmware.git / blobdiff