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authorJack Humbert <jack.humb@gmail.com>2016-04-19 21:25:48 -0400
committerJack Humbert <jack.humb@gmail.com>2016-04-19 21:25:48 -0400
commit462601f5e8de3476963c6fef44a88653e19fc3fd (patch)
treeaba1da14bfa96567120a8b12b6d1cba7231cefa0 /quantum
parenta2ee27715880616a15756e1b9f42183d9fb08051 (diff)
breaking changes - restructuring audio.c a little
Diffstat (limited to 'quantum')
-rw-r--r--quantum/audio.c108
-rw-r--r--quantum/audio.h1
2 files changed, 63 insertions, 46 deletions
diff --git a/quantum/audio.c b/quantum/audio.c
index 8ea1bf6ff0..bbdbc824c9 100644
--- a/quantum/audio.c
+++ b/quantum/audio.c
@@ -74,7 +74,9 @@ float vibrato_counter = 0;
float vibrato_strength = .5;
float vibrato_rate = 0.125;
-float polyphony_rate = .5;
+float polyphony_rate = 0;
+
+bool inited = false;
audio_config_t audio_config;
@@ -170,7 +172,49 @@ void increase_tempo(uint8_t tempo_change) {
}
}
+void audio_init() {
+
+ /* check signature */
+ if (!eeconfig_is_enabled()) {
+ eeconfig_init();
+ }
+ audio_config.raw = eeconfig_read_audio();
+
+ #ifdef PWM_AUDIO
+ 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
+ #else
+ DDRC |= _BV(PORTC6);
+
+ TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
+
+ TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
+ TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
+ #endif
+
+ inited = true;
+}
+
void stop_all_notes() {
+ if (!inited) {
+ audio_init();
+ }
voices = 0;
#ifdef PWM_AUDIO
TIMSK3 &= ~_BV(OCIE3A);
@@ -191,7 +235,9 @@ void stop_all_notes() {
void stop_note(double freq) {
if (note) {
- cli();
+ if (!inited) {
+ audio_init();
+ }
#ifdef PWM_AUDIO
freq = freq / SAMPLE_RATE;
#endif
@@ -225,47 +271,9 @@ void stop_note(double freq) {
volume = 0;
note = false;
}
- sei();
}
}
-void init_notes() {
-
- /* check signature */
- if (!eeconfig_is_enabled()) {
- eeconfig_init();
- }
- audio_config.raw = eeconfig_read_audio();
-
- #ifdef PWM_AUDIO
- 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
- #else
- DDRC |= _BV(PORTC6);
-
- TIMSK3 &= ~_BV(OCIE3A); // Turn off 3A interputs
-
- TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
- TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
- #endif
-}
-
float mod(float a, int b)
{
float r = fmod(a, b);
@@ -456,7 +464,10 @@ ISR(TIMER3_COMPA_vect) {
void play_notes(float (*np)[][2], uint8_t n_count, bool n_repeat, float n_rest) {
if (audio_config.enable) {
- cli();
+ TIMSK3 &= ~_BV(OCIE3A);
+ if (!inited) {
+ audio_init();
+ }
// Cancel note if a note is playing
if (note)
stop_all_notes();
@@ -485,7 +496,6 @@ if (audio_config.enable) {
TIMSK3 |= _BV(OCIE3A);
TCCR3A |= _BV(COM3A1);
#endif
- sei();
}
}
@@ -493,7 +503,10 @@ if (audio_config.enable) {
void play_sample(uint8_t * s, uint16_t l, bool r) {
if (audio_config.enable) {
-
+ TIMSK3 &= ~_BV(OCIE3A);
+ if (!inited) {
+ audio_init();
+ }
stop_all_notes();
place_int = 0;
sample = s;
@@ -512,7 +525,10 @@ if (audio_config.enable) {
void play_note(double freq, int vol) {
if (audio_config.enable && voices < 8) {
- cli();
+ TIMSK3 &= ~_BV(OCIE3A);
+ if (!inited) {
+ audio_init();
+ }
// Cancel notes if notes are playing
if (notes)
stop_all_notes();
@@ -532,7 +548,6 @@ if (audio_config.enable && voices < 8) {
TIMSK3 |= _BV(OCIE3A);
TCCR3A |= _BV(COM3A1);
#endif
- sei();
}
}
@@ -545,8 +560,11 @@ void play_startup_tone()
{
}
+
+
__attribute__ ((weak))
void play_goodbye_tone()
{
+
}
//------------------------------------------------------------------------------
diff --git a/quantum/audio.h b/quantum/audio.h
index 85756af9d4..0fe3eac9af 100644
--- a/quantum/audio.h
+++ b/quantum/audio.h
@@ -55,7 +55,6 @@ void play_sample(uint8_t * s, uint16_t l, bool r);
void play_note(double freq, int vol);
void stop_note(double freq);
void stop_all_notes(void);
-void init_notes(void);
void play_notes(float (*np)[][2], uint8_t n_count, bool n_repeat, float n_rest);
#define SCALE (int []){ 0 + (12*0), 2 + (12*0), 4 + (12*0), 5 + (12*0), 7 + (12*0), 9 + (12*0), 11 + (12*0), \