summaryrefslogtreecommitdiff
path: root/keyboard/planck/beeps.c
diff options
context:
space:
mode:
Diffstat (limited to 'keyboard/planck/beeps.c')
-rw-r--r--keyboard/planck/beeps.c204
1 files changed, 93 insertions, 111 deletions
diff --git a/keyboard/planck/beeps.c b/keyboard/planck/beeps.c
index 13e46e1daf..335bfa7d43 100644
--- a/keyboard/planck/beeps.c
+++ b/keyboard/planck/beeps.c
@@ -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);
+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;
- 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) {
+ 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);
-
- // 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;
-
- // Enable interrupt when TCNT1 == OCR1A (p.136)
- TIMSK1 |= _BV(OCIE2A);
+ 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;
- 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);
} \ No newline at end of file
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 02:32:36 +0000