|
|
|
@ -7,36 +7,19 @@
|
|
|
|
|
#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--) {
|
|
|
|
|
_delay_us(1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
int voices = 0;
|
|
|
|
|
double frequency = 0;
|
|
|
|
|
int volume = 0;
|
|
|
|
|
|
|
|
|
|
double frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
|
|
|
int volumes[8] = {0, 0, 0, 0, 0, 0, 0, 0};
|
|
|
|
|
|
|
|
|
|
void beeps() {
|
|
|
|
|
// DDRB |= (1<<7);
|
|
|
|
|
// PORTB &= ~(1<<7);
|
|
|
|
@ -120,119 +103,118 @@ play_notes();
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void play_note(float freq, int length) {
|
|
|
|
|
DDRB |= (1<<7);
|
|
|
|
|
PORTB &= ~(1<<7);
|
|
|
|
|
|
|
|
|
|
if (freq > 0) {
|
|
|
|
|
int frequency = 1000000/freq;
|
|
|
|
|
ICR1 = frequency; // Set max to the period
|
|
|
|
|
OCR1C = frequency >> 1; // Set compare to half the period
|
|
|
|
|
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
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
TCCR1A = _BV(COM1C1) | _BV(WGM11); // = 0b00001010;
|
|
|
|
|
TCCR1B = _BV(WGM13) | _BV(WGM12) | _BV(CS10); // = 0b00011001;
|
|
|
|
|
}
|
|
|
|
|
void stop_all_notes() {
|
|
|
|
|
voices = 0;
|
|
|
|
|
TCCR3A = 0;
|
|
|
|
|
TCCR3B = 0;
|
|
|
|
|
frequency = 0;
|
|
|
|
|
|
|
|
|
|
for (int i = 0; i < length; i++) {
|
|
|
|
|
_delay_us(50000);
|
|
|
|
|
for (int i = 0; i < 8; i++) {
|
|
|
|
|
frequencies[i] = 0;
|
|
|
|
|
volumes[i] = 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
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);
|
|
|
|
|
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 = sounddata_length + lastSample - sample;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
else {
|
|
|
|
|
OCR1C = pgm_read_byte(&sounddata_data[sample]);
|
|
|
|
|
voices--;
|
|
|
|
|
if (voices == 0) {
|
|
|
|
|
TCCR3A = 0;
|
|
|
|
|
TCCR3B = 0;
|
|
|
|
|
frequency = 0;
|
|
|
|
|
} else {
|
|
|
|
|
double freq = frequencies[voices - 1];
|
|
|
|
|
int vol = volumes[voices - 1];
|
|
|
|
|
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;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
++sample;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
void play_notes() {
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// Set up Timer 2 to do pulse width modulation on the speaker
|
|
|
|
|
// pin.
|
|
|
|
|
|
|
|
|
|
DDRB |= (1<<7);
|
|
|
|
|
PORTB &= ~(1<<7);
|
|
|
|
|
void play_note(double freq, int vol) {
|
|
|
|
|
|
|
|
|
|
// 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);
|
|
|
|
|
|
|
|
|
|
// 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);
|
|
|
|
|
|
|
|
|
|
// Set initial pulse width to the first sample.
|
|
|
|
|
OCR1A = pgm_read_byte(&sounddata_data[0]);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
cli();
|
|
|
|
|
|
|
|
|
|
// 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));
|
|
|
|
|
|
|
|
|
|
// No prescaler (p.134)
|
|
|
|
|
TCCR2B = (TCCR2B & ~(_BV(CS12) | _BV(CS11))) | _BV(CS10);
|
|
|
|
|
if (freq > 0) {
|
|
|
|
|
DDRC |= (1<<6);
|
|
|
|
|
|
|
|
|
|
// 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;
|
|
|
|
|
TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
|
|
|
|
|
TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
|
|
|
|
|
|
|
|
|
|
// Enable interrupt when TCNT1 == OCR1A (p.136)
|
|
|
|
|
TIMSK1 |= _BV(OCIE2A);
|
|
|
|
|
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;
|
|
|
|
|
|
|
|
|
|
sample = 0;
|
|
|
|
|
sei();
|
|
|
|
|
frequencies[voices] = frequency;
|
|
|
|
|
volumes[voices] = volume;
|
|
|
|
|
voices++;
|
|
|
|
|
}
|
|
|
|
|
// 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 note(int x, float length) {
|
|
|
|
|
DDRB |= (1<<1);
|
|
|
|
|
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
|
|
|
|
|
PORTB |= (1<<1);
|
|
|
|
|
PORTC |= (1<<6);
|
|
|
|
|
delay_us(t);
|
|
|
|
|
PORTB &= ~(1<<1);
|
|
|
|
|
PORTC &= ~(1<<6);
|
|
|
|
|
delay_us(t);
|
|
|
|
|
}
|
|
|
|
|
PORTB &= ~(1<<1);
|
|
|
|
|
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) && !(PORTB&(1<<1)))
|
|
|
|
|
PORTB |= (1<<1);
|
|
|
|
|
else if (PORTB&(1<<1))
|
|
|
|
|
PORTB &= ~(1<<1);
|
|
|
|
|
if (v & (1 << u) && !(PORTC&(1<<6)))
|
|
|
|
|
PORTC |= (1<<6);
|
|
|
|
|
else if (PORTC&(1<<6))
|
|
|
|
|
PORTC &= ~(1<<6);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
PORTB &= ~(1<<1);
|
|
|
|
|
PORTC &= ~(1<<6);
|
|
|
|
|
}
|