diff options
Diffstat (limited to 'keyboard/preonic/beeps.c')
-rw-r--r-- | keyboard/preonic/beeps.c | 386 |
1 files changed, 197 insertions, 189 deletions
diff --git a/keyboard/preonic/beeps.c b/keyboard/preonic/beeps.c index 13e46e1da..8ffd70f41 100644 --- a/keyboard/preonic/beeps.c +++ b/keyboard/preonic/beeps.c @@ -5,31 +5,6 @@ #include <avr/io.h> #define PI 3.14159265 -#define CHANNEL OCR1C - -volatile uint16_t sample; -uint16_t lastSample; - -const int sounddata_length=200; - -const unsigned char sounddata_data[] PROGMEM = {128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, -128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128, 129, 127, 129, 128, 127, 133, -117, 109, 125, 121, 116, 132, 140, 126, 114, 114, 116, 120, 114, 93, 73, 66, 76, 116, 142, 129, -128, 129, 120, 119, 118, 104, 87, 123, 181, 194, 196, 198, 189, 176, 160, 162, 172, 164, 164, 183, -197, 188, 168, 167, 170, 165, 185, 209, 206, 196, 196, 199, 185, 162, 156, 167, 176, 173, 170, 166, -151, 142, 140, 134, 130, 127, 113, 86, 67, 66, 69, 75, 73, 75, 86, 90, 91, 84, 65, 48, -41, 30, 26, 56, 91, 88, 72, 70, 73, 82, 89, 73, 57, 60, 74, 89, 92, 77, 63, 60, -53, 47, 56, 64, 63, 61, 56, 54, 52, 36, 16, 22, 51, 66, 67, 70, 76, 88, 99, 92, -77, 74, 85, 100, 106, 97, 83, 85, 96, 108, 133, 160, 164}; void delay_us(int count) { while(count--) { @@ -37,202 +12,235 @@ void delay_us(int count) { } } -void beeps() { - // DDRB |= (1<<7); - // PORTB &= ~(1<<7); - - // // Use full 16-bit resolution. - // ICR1 = 0xFFFF; - - // // I could write a wall of text here to explain... but TL;DW - // // Go read the ATmega32u4 datasheet. - // // And this: http://blog.saikoled.com/post/43165849837/secret-konami-cheat-code-to-high-resolution-pwm-on - - // // Pin PB7 = OCR1C (Timer 1, Channel C) - // // Compare Output Mode = Clear on compare match, Channel C = COM1C1=1 COM1C0=0 - // // (i.e. start high, go low when counter matches.) - // // WGM Mode 14 (Fast PWM) = WGM13=1 WGM12=1 WGM11=1 WGM10=0 - // // Clock Select = clk/1 (no prescaling) = CS12=0 CS11=0 CS10=1 - - // TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010; - // TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001; - - - // // Turn off PWM control on PB7, revert to output low. - // // TCCR1A &= ~(_BV(COM1C1)); - // // CHANNEL = ((1 << level) - 1); - - // // Turn on PWM control of PB7 - // TCCR1A |= _BV(COM1C1); - // // CHANNEL = level << OFFSET | 0x0FFF; - // // CHANNEL = 0b1010101010101010; - - // float x = 12; - // float y = 24; - // float length = 50; - // float scale = 1; - - // // int f1 = 1000000/440; - // // int f2 = 1000000/880; - // // for (uint32_t i = 0; i < length * 1000; i++) { - // // // int frequency = 1/((sin(PI*2*i*scale*pow(2, x/12.0))*.5+1 + sin(PI*2*i*scale*pow(2, y/12.0))*.5+1) / 2); - - // // ICR1 = f1; // Set max to the period - // // OCR1C = f1 >> 1; // Set compare to half the period - // // // _delay_us(10); - // // } - // int frequency = 1000000/440; - // ICR1 = frequency; // Set max to the period - // OCR1C = frequency >> 1; // Set compare to half the period - // _delay_us(500000); - - // TCCR1A &= ~(_BV(COM1C1)); - // CHANNEL = 0; -play_notes(); - - - // play_note(55*pow(2, 0/12.0), 1); - // play_note(55*pow(2, 12/12.0), 1); - // play_note(55*pow(2, 24/12.0), 1); - // play_note(55*pow(2, 0/12.0), 1); - // play_note(55*pow(2, 12/12.0), 1); - // play_note(55*pow(2, 24/12.0), 1); - - // play_note(0, 4); - - // play_note(55*pow(2, 0/12.0), 8); - // play_note(55*pow(2, 12/12.0), 4); - // play_note(55*pow(2, 10/12.0), 4); - // play_note(55*pow(2, 12/12.0), 8); - // play_note(55*pow(2, 10/12.0), 4); - // play_note(55*pow(2, 7/12.0), 2); - // play_note(55*pow(2, 8/12.0), 2); - // play_note(55*pow(2, 7/12.0), 16); - // play_note(0, 4); - // play_note(55*pow(2, 3/12.0), 8); - // play_note(55*pow(2, 5/12.0), 4); - // play_note(55*pow(2, 7/12.0), 4); - // play_note(55*pow(2, 7/12.0), 8); - // play_note(55*pow(2, 5/12.0), 4); - // play_note(55*pow(2, 3/12.0), 4); - // play_note(55*pow(2, 2/12.0), 16); +int voices = 0; +double frequency = 0; +int volume = 0; +int 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 +void beeps() { + play_notes(); } -void play_note(float freq, int length) { - DDRB |= (1<<7); - PORTB &= ~(1<<7); +void send_freq(double freq, int vol) { + int duty = (((double)F_CPU) / freq); + ICR3 = duty; // Set max to the period + OCR3A = duty >> (0x10 - vol); // Set compare to half the period +} - if (freq > 0) { - int frequency = 1000000/freq; - ICR1 = frequency; // Set max to the period - OCR1C = frequency >> 1; // Set compare to half the period +void stop_all_notes() { + voices = 0; + TCCR3A = 0; + TCCR3B = 0; + frequency = 0; + volume = 0; - TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010; - TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001; + for (int i = 0; i < 8; i++) { + frequencies[i] = 0; + volumes[i] = 0; } - - for (int i = 0; i < length; i++) { - _delay_us(50000); - } - - TCCR1A &= ~(_BV(COM1C1)); } -// This is called at 8000 Hz to load the next sample. -ISR(TIMER1_COMPA_vect) { - if (sample >= sounddata_length) { - if (sample == sounddata_length + lastSample) { - TIMSK1 &= ~_BV(OCIE1A); - - // Disable the per-sample timer completely. - TCCR1B &= ~_BV(CS10); - } - else { - OCR1C = sounddata_length + lastSample - sample; +void stop_note(double freq) { + 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; + } } } - else { - OCR1C = pgm_read_byte(&sounddata_data[sample]); + voices--; + if (voices < 0) + voices = 0; + if (voices == 0) { + TCCR3A = 0; + TCCR3B = 0; + frequency = 0; + volume = 0; + } else { + double freq = frequencies[voices - 1]; + int vol = volumes[voices - 1]; + if (frequency < freq) { + sliding = true; + for (double f = frequency; f <= freq; f += ((freq - frequency) / 500.0)) { + send_freq(f, vol); + } + sliding = false; + } else if (frequency > freq) { + sliding = true; + for (double f = frequency; f >= freq; f -= ((frequency - freq) / 500.0)) { + send_freq(f, vol); + } + sliding = false; + } + send_freq(freq, vol); + frequency = freq; + volume = vol; } - - ++sample; } -void play_notes() { +void init_notes() { + // TCCR1A = (1 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (1 << WGM10); + // TCCR1B = (1 << COM1B1) | (0 << COM1A0) | (1 << WGM13) | (1 << WGM12) | (0 << CS12) | (0 << CS11) | (1 << CS10); + // DDRC |= (1<<6); - // Set up Timer 2 to do pulse width modulation on the speaker - // pin. + // TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); + // TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (0 << CS31) | (1 << CS30); - DDRB |= (1<<7); - PORTB &= ~(1<<7); + // ICR3 = 0xFFFF; + // OCR3A = (int)((float)wave[i]*ICR3/RANGE); //go to next array element - // Use internal clock (datasheet p.160) - // ASSR &= ~(_BV(EXCLK) | _BV(AS2)); - // Set fast PWM mode (p.157) - TCCR1A |= _BV(WGM21) | _BV(WGM20); - TCCR1B &= ~_BV(WGM22); + // cli(); - // Do non-inverting PWM on pin OC2A (p.155) - // On the Arduino this is pin 11. - TCCR1A = (TCCR2A | _BV(COM2A1)) & ~_BV(COM2A0); - TCCR1A &= ~(_BV(COM2B1) | _BV(COM2B0)); - // No prescaler (p.158) - TCCR1B = (TCCR1B & ~(_BV(CS12) | _BV(CS11))) | _BV(CS10); + // /* Enable interrupt on timer2 == 127, with clk/8 prescaler. At 16MHz, + // this gives a timer interrupt at 15625Hz. */ + // TIMSK3 = (1 << OCIE3A); - // Set initial pulse width to the first sample. - OCR1A = pgm_read_byte(&sounddata_data[0]); + // /* clear/reset timer on match */ + // // TCCR3A = 1<<WGM31 | 0<<WGM30; CTC mode, reset on match + // // TCCR3B = 0<<CS32 | 1<<CS31 | 0<<CS30; /* clk, /8 prescaler */ + // TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); + // TCCR3B = (0 << WGM33) | (0 << WGM32) | (0 << CS32) | (0 << CS31) | (1 << CS30); + // TCCR1A = (1 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10); + // TCCR1B = (1 << WGM12) | (0 << CS12) | (0 << CS11) | (1 << CS10); + // // SPCR = 0x50; + // // SPSR = 0x01; + // DDRC |= (1<<6); + // // ICR3 = 0xFFFF; + // // OCR3A=80; + // PORTC |= (1<<6); - cli(); + // sei(); +} + +// #define highByte(c) ((c >> 8) & 0x00FF) +// #define lowByte(c) (c & 0x00FF) + +ISR(TIMER3_COMPA_vect) { + + if (ICR3 > 0 && !sliding) { + switch (position) { + case 0: { + int duty = (((double)F_CPU) / (frequency)); + ICR3 = duty; // Set max to the period + OCR3A = duty >> 1; // Set compare to half the period + break; + } + case 1: { + int duty = (((double)F_CPU) / (frequency*2)); + ICR3 = duty; // Set max to the period + OCR3A = duty >> 1; // Set compare to half the period + break; + } + case 2: { + int duty = (((double)F_CPU) / (frequency*3)); + ICR3 = duty; // Set max to the period + OCR3A = duty >> 1; // Set compare to half the period + break; + } + } + position = (position + 1) % 3; + } +// /* OCR2A has been cleared, per TCCR2A above */ +// // OCR3A = 127; + +// // pos1 += incr1; +// // pos2 += incr2; +// // pos3 += incr3; + +// // sample = sinewave[highByte(pos1)] + sinewave[highByte(pos2)] + sinewave[highByte(pos3)]; - // Set CTC mode (Clear Timer on Compare Match) (p.133) - // Have to set OCR1A *after*, otherwise it gets reset to 0! - TCCR2B = (TCCR2B & ~_BV(WGM13)) | _BV(WGM12); - TCCR2A = TCCR2A & ~(_BV(WGM11) | _BV(WGM10)); +// // OCR3A = sample; - // No prescaler (p.134) - TCCR2B = (TCCR2B & ~(_BV(CS12) | _BV(CS11))) | _BV(CS10); - // Set the compare register (OCR1A). - // OCR1A is a 16-bit register, so we have to do this with - // interrupts disabled to be safe. - // OCR2A = F_CPU / SAMPLE_RATE; // 16e6 / 8000 = 2000 - OCR2A = 2000; +// OCR3A=pgm_read_byte(&sinewave[pos1]); +// pos1++; +// // PORTC &= ~(1<<6); - // Enable interrupt when TCNT1 == OCR1A (p.136) - TIMSK1 |= _BV(OCIE2A); +// /* buffered, 1x gain, active mode */ +// // SPDR = highByte(sample) | 0x70; +// // while (!(SPSR & (1<<SPIF))); - sample = 0; - sei(); +// // SPDR = lowByte(sample); +// // while (!(SPSR & (1<<SPIF))); + +// // PORTC |= (1<<6); } -void note(int x, float length) { - DDRB |= (1<<1); - int t = (int)(440*pow(2,-x/12.0)); // starting note - for (int y = 0; y < length*1000/t; y++) { // note length - PORTB |= (1<<1); - delay_us(t); - PORTB &= ~(1<<1); - delay_us(t); +void play_note(double freq, int vol) { + + if (freq > 0) { + DDRC |= (1<<6); + + TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30); + TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30); + + if (frequency != 0) { + if (frequency < freq) { + for (double f = frequency; f <= freq; f += ((freq - frequency) / 500.0)) { + send_freq(f, vol); + } + } else if (frequency > freq) { + for (double f = frequency; f >= freq; f -= ((frequency - freq) / 500.0)) { + send_freq(f, vol); + } + } + } + send_freq(freq, vol); + frequency = freq; + volume = vol; + + frequencies[voices] = frequency; + volumes[voices] = volume; + voices++; } - PORTB &= ~(1<<1); + // ICR3 = 0xFFFF; + // for (int i = 0; i < 10000; i++) { + // OCR3A = round((sin(i*freq)*.5)+.5)*0xFFFF; + // // _delay_us(50); + // } + + // TCCR3A = 0; + // TCCR3B = 0; } -void true_note(float x, float y, float length) { - for (uint32_t i = 0; i < length * 50; i++) { - uint32_t v = (uint32_t) (round(sin(PI*2*i*640000*pow(2, x/12.0))*.5+1 + sin(PI*2*i*640000*pow(2, y/12.0))*.5+1) / 2 * pow(2, 8)); - for (int u = 0; u < 8; u++) { - if (v & (1 << u) && !(PORTB&(1<<1))) - PORTB |= (1<<1); - else if (PORTB&(1<<1)) - PORTB &= ~(1<<1); - } - } - PORTB &= ~(1<<1); -}
\ No newline at end of file +// void note(int x, float length) { +// DDRC |= (1<<6); +// int t = (int)(440*pow(2,-x/12.0)); // starting note +// for (int y = 0; y < length*1000/t; y++) { // note length +// PORTC |= (1<<6); +// delay_us(t); +// PORTC &= ~(1<<6); +// delay_us(t); +// } +// PORTC &= ~(1<<6); +// } + +// void true_note(float x, float y, float length) { +// for (uint32_t i = 0; i < length * 50; i++) { +// uint32_t v = (uint32_t) (round(sin(PI*2*i*640000*pow(2, x/12.0))*.5+1 + sin(PI*2*i*640000*pow(2, y/12.0))*.5+1) / 2 * pow(2, 8)); +// for (int u = 0; u < 8; u++) { +// if (v & (1 << u) && !(PORTC&(1<<6))) +// PORTC |= (1<<6); +// else if (PORTC&(1<<6)) +// PORTC &= ~(1<<6); +// } +// } +// PORTC &= ~(1<<6); +// }
\ No newline at end of file |