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timer 3

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This commit is contained in:
Jack Humbert 2016-01-11 17:52:35 -05:00
parent 29de37d5c0
commit 0f867796de
2 changed files with 18 additions and 151 deletions
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151
quantum/beeps.c
View file

@ -32,33 +32,9 @@ bool sliding = false;
#define RANGE 1000 #define RANGE 1000
volatile int i=0; //elements of the wave volatile int i=0; //elements of the wave
// uint8_t sine[128];
// uint8_t tri[128];
// uint8_t squ[128];
// uint8_t* sine_start;
// uint8_t* sine_end;
// uint8_t* tri_start;
// uint8_t* tri_end;
// uint8_t* s_start;
// uint8_t* s_end;
// uint8_t* s_ptr;
void beeps() {
play_notes();
}
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
}
void stop_all_notes() { void stop_all_notes() {
voices = 0; voices = 0;
TIMSK0 &= ~_BV(OCIE0A); TIMSK3 &= ~_BV(OCIE3A);
frequency = 0; frequency = 0;
volume = 0; volume = 0;
@ -86,7 +62,7 @@ void stop_note(double freq) {
if (voices < 0) if (voices < 0)
voices = 0; voices = 0;
if (voices == 0) { if (voices == 0) {
TIMSK0 &= ~_BV(OCIE0A); TIMSK3 &= ~_BV(OCIE3A);
frequency = 0; frequency = 0;
volume = 0; volume = 0;
} else { } else {
@ -106,7 +82,6 @@ void stop_note(double freq) {
} }
sliding = false; sliding = false;
} }
// send_freq(freq, vol);
frequency = freq; frequency = freq;
volume = vol; volume = vol;
} }
@ -114,18 +89,6 @@ void stop_note(double freq) {
void init_notes() { void init_notes() {
// for(int i = 0; i < 128; i++) {
// sine[i] = sin(i * PI / 64) * 128 + 128;
// tri[i] = 256 - abs((i - 64) * 4);
// }
// sine_start = &sine;
// sine_end = &sine + 128;
// tri_start = &tri;
// tri_end = &tri + 128;
// new
PLLFRQ = _BV(PDIV2); PLLFRQ = _BV(PDIV2);
PLLCSR = _BV(PLLE); PLLCSR = _BV(PLLE);
while(!(PLLCSR & _BV(PLOCK))); while(!(PLLCSR & _BV(PLOCK)));
@ -139,28 +102,6 @@ void init_notes() {
/* Enable the OC4A output */ /* Enable the OC4A output */
DDRC |= _BV(PORTC6); DDRC |= _BV(PORTC6);
/* First disable the timer overflow interrupt while we're configuring */
// TIMSK0 &= ~(1<<TOIE0);
// /* Configure timer4 in normal mode (pure counting, no PWM etc.) */
// TCCR0A &= ~((1<<WGM01) | (1<<WGM00));
// TCCR0B &= ~(1<<WGM02);
// /* Disable Compare Match A interrupt enable (only want overflow) */
// TIMSK0 &= ~(1<<OCIE0A);
// TCCR0B |= (1<<CS01); // Set bits
// TCCR0B &= ~(1<<CS00) | ~(1<<CS02); // Clear bit
// /* Save value globally for later reload in ISR */
// tcnt0 = 45 - 1;
// /* Finally load end enable the timer */
// TCNT0 = tcnt0;
// TIMSK0 |= (1<<TOIE0);
} }
int max = 0xFF; int max = 0xFF;
@ -168,28 +109,7 @@ float sum = 0;
int value = 128; int value = 128;
float place = 0; float place = 0;
ISR(TIMER0_COMPA_vect) { ISR(TIMER3_COMPA_vect) {
// value = *(sine_start+=(long)frequencies[0]);
// OCR4A = value;
// if (sine_start >= sine_end) {
// sine_start = &sine[(sine_start - sine_end) % 128];
// }
// OCR4A = pgm_read_byte(sine_start);
// // sine_start = &sine[(sine_start - &sine[0] + (int)frequencies[0]) % 128];
// sine_start += (int)frequencies[0];
// if (sine_start >= sine_end) {
// sine_start = &sine[(sine_start - sine_end) % 128];
// }
// OCR4A = pgm_read_byte(s_ptr);
// s_ptr = s_start + (uint8_t)place;
// OCR4A = pgm_read_byte(s_ptr);
// SINE // SINE
OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]); OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]);
@ -217,24 +137,10 @@ ISR(TIMER0_COMPA_vect) {
} }
ISR(TIMER0_COMPB_vect)
{
/* Disable the interrupt */
TIMSK0 &= ~_BV(OCIE0B);
}
void play_note(double freq, int vol) { void play_note(double freq, int vol) {
freq = freq / SAMPLE_RATE; freq = freq / SAMPLE_RATE;
if (freq > 0) { if (freq > 0) {
// TCCR3A = (1 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (1 << WGM30);
// TCCR3B = (0 << WGM33) | (1 << WGM32) | (0 << CS32) | (0 << CS31) | (1 << CS30);
// TIMSK3 = 0x0;
if (frequency != 0) { if (frequency != 0) {
double starting_f = frequency; double starting_f = frequency;
if (frequency < freq) { if (frequency < freq) {
@ -247,59 +153,20 @@ void play_note(double freq, int vol) {
} }
} }
} }
// send_freq(freq, vol);
frequency = freq; frequency = freq;
volume = vol; volume = vol;
frequencies[voices] = frequency; frequencies[voices] = frequency;
volumes[voices] = volume; volumes[voices] = volume;
voices++; voices++;
// position = 0;
// TCNT0 = 0;
} }
// ICR3 = 0xFFFF;
// for (int i = 0; i < 10000; i++) {
// OCR3A = round((sin(i*freq)*.5)+.5)*0xFFFF;
// // _delay_us(50);
// }
// TCCR3A = 0; TIMSK3 &= ~_BV(OCIE3A);
// TCCR3B = 0;
TCCR3A = 0x0;
TCCR3B = _BV(CS31) | _BV(WGM32);
OCR3A = SAMPLE_DIVIDER - 1;
TIMSK0 &= ~_BV(OCIE0A) | ~_BV(OCIE0B); TIMSK3 |= _BV(OCIE3A);
TCCR0A = _BV(WGM01); }
TCCR0B = _BV(CS01);
OCR0A = SAMPLE_DIVIDER - 1;
OCR0B = 1;
TIMSK0 |= _BV(OCIE0A);
// sei();
}
// 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);
// }

18
tmk_core/common/avr/timer.c
View file

@ -29,24 +29,24 @@ volatile uint32_t timer_count = 0;
void timer_init(void) void timer_init(void)
{ {
// Timer0 CTC mode // Timer0 CTC mode
TCCR1A = 0x02; TCCR0A = 0x02;
#if TIMER_PRESCALER == 1 #if TIMER_PRESCALER == 1
TCCR1B = 0x01; TCCR0B = 0x01;
#elif TIMER_PRESCALER == 8 #elif TIMER_PRESCALER == 8
TCCR1B = 0x02; TCCR0B = 0x02;
#elif TIMER_PRESCALER == 64 #elif TIMER_PRESCALER == 64
TCCR1B = 0x03; TCCR0B = 0x03;
#elif TIMER_PRESCALER == 256 #elif TIMER_PRESCALER == 256
TCCR1B = 0x04; TCCR0B = 0x04;
#elif TIMER_PRESCALER == 1024 #elif TIMER_PRESCALER == 1024
TCCR1B = 0x05; TCCR0B = 0x05;
#else #else
# error "Timer prescaler value is NOT vaild." # error "Timer prescaler value is NOT vaild."
#endif #endif
OCR1A = TIMER_RAW_TOP; OCR0A = TIMER_RAW_TOP;
TIMSK1 = (1<<OCIE1A); TIMSK0 = (1<<OCIE0A);
} }
inline inline
@ -111,7 +111,7 @@ uint32_t timer_elapsed32(uint32_t last)
} }
// excecuted once per 1ms.(excess for just timer count?) // excecuted once per 1ms.(excess for just timer count?)
ISR(TIMER1_COMPA_vect) ISR(TIMER0_COMPA_vect)
{ {
timer_count++; timer_count++;
} }