diff options
Diffstat (limited to 'quantum/beeps.c')
| -rw-r--r-- | quantum/beeps.c | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/quantum/beeps.c b/quantum/beeps.c deleted file mode 100644 index 7586ebc522..0000000000 --- a/quantum/beeps.c +++ /dev/null @@ -1,265 +0,0 @@ -#include <stdio.h> -#include <string.h> -#include <math.h> -#include <avr/pgmspace.h> -#include <avr/interrupt.h> -#include <avr/io.h> - -#include "beeps.h" -#include "keymap_common.h" -#include "wave.h" - -#define PI 3.14159265 - -#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 - -void delay_us(int count) { - while(count--) { - _delay_us(1); - } -} - -int voices = 0; -double frequency = 0; -int volume = 0; -long position = 0; - -double frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0}; -int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0}; -bool sliding = false; -#define RANGE 1000 -volatile int i=0; //elements of the wave - -int max = 0xFF; -float sum = 0; -int value = 128; -float place = 0; - -uint16_t place_int = 0; -bool repeat = true; -uint8_t * sample; -uint16_t sample_length = 0; - - -bool notes = false; -float note_frequency = 0; -float note_length = 0; -uint16_t note_position = 0; -float (* notes_pointer)[][2]; -uint8_t notes_length; -bool notes_repeat; -uint8_t current_note = 0; - -void stop_all_notes() { - voices = 0; - TIMSK3 &= ~_BV(OCIE3A); - notes = false; - playing_notes = false; - frequency = 0; - volume = 0; - - for (int i = 0; i < 8; i++) { - frequencies[i] = 0; - volumes[i] = 0; - } -} - -void stop_note(double freq) { - freq = freq / SAMPLE_RATE; - 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) { - TIMSK3 &= ~_BV(OCIE3A); - frequency = 0; - volume = 0; - } 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) / 500.0)) { - frequency = f; - } - sliding = false; - } else if (frequency > freq) { - sliding = true; - for (double f = starting_f; f >= freq; f -= ((starting_f - freq) / 500.0)) { - frequency = f; - } - sliding = false; - } - frequency = freq; - volume = vol; - } -} - -void init_notes() { - - 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); - - 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 - - playing_notes = false; - -} - - -ISR(TIMER3_COMPA_vect) { - - - // SINE - // OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]); - - // SQUARE - // if (((int)place) >= 1024){ - // OCR4A = 0xFF; - // } 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) - // if (repeat) - // place -= SINE_LENGTH; - // else - // TIMSK3 &= ~_BV(OCIE3A); - - // 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) { - OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0; - - place += note_frequency; - if (place >= SINE_LENGTH) - place -= SINE_LENGTH; - note_position++; - if (note_position >= note_length) { - current_note++; - if (current_note >= notes_length) { - if (notes_repeat) { - current_note = 0; - } else { - TIMSK3 &= ~_BV(OCIE3A); - notes = false; - playing_notes = false; - return; - } - } - note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE; - note_length = (*notes_pointer)[current_note][1]; - note_position = 0; - } - - } - -} - -void play_notes(float (*np)[][2], uint8_t n_length, bool n_repeat) { - notes = true; - - notes_pointer = np; - notes_length = n_length; - notes_repeat = n_repeat; - - place = 0; - current_note = 0; - note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE; - note_length = (*notes_pointer)[current_note][1]; - // note_frequency = 880.0 / SAMPLE_RATE; - // note_length = 1000; - note_position = 0; - - - TIMSK3 |= _BV(OCIE3A); - playing_notes = true; -} - -void play_sample(uint8_t * s, uint16_t l, bool r) { - place_int = 0; - sample = s; - sample_length = l; - repeat = r; - - TIMSK3 |= _BV(OCIE3A); - playing_notes = true; -} - -void play_note(double freq, int vol) { - - freq = freq / SAMPLE_RATE; - if (freq > 0) { - if (frequency != 0) { - double starting_f = frequency; - if (frequency < freq) { - for (double f = starting_f; f <= freq; f += ((freq - starting_f) / 500.0)) { - frequency = f; - } - } else if (frequency > freq) { - for (double f = starting_f; f >= freq; f -= ((starting_f - freq) / 500.0)) { - frequency = f; - } - } - } - frequency = freq; - volume = vol; - - frequencies[voices] = frequency; - volumes[voices] = volume; - voices++; - } - - TIMSK3 |= _BV(OCIE3A); - -}
\ No newline at end of file |