mirror of
https://github.com/firewalkwithm3/qmk_firmware.git
synced 2024-11-22 19:40:29 +08:00
Merge pull request #1445 from qmk/dual_audio
Allow for duophony (C6 and B5) and B5 audio
This commit is contained in:
Jack Humbert
GitHub
commit
a52836e669
|
|
@ -1,7 +1,7 @@
|
|||
|
||||
## Audio output from a speaker
|
||||
|
||||
Your keyboard can make sounds! If you've got a Planck, Preonic, or basically any keyboard that allows access to the C6 port, you can hook up a simple speaker and make it beep. You can use those beeps to indicate layer transitions, modifiers, special keys, or just to play some funky 8bit tunes.
|
||||
Your keyboard can make sounds! If you've got a Planck, Preonic, or basically any keyboard that allows access to the C6 or B5 port (`#define C6_AUDIO` and `#define B5_AUDIO`), you can hook up a simple speaker and make it beep. You can use those beeps to indicate layer transitions, modifiers, special keys, or just to play some funky 8bit tunes.
|
||||
|
||||
The audio code lives in [quantum/audio/audio.h](https://github.com/qmk/qmk_firmware/blob/master/quantum/audio/audio.h) and in the other files in the audio directory. It's enabled by default on the Planck [stock keymap](https://github.com/qmk/qmk_firmware/blob/master/keyboards/planck/keymaps/default/keymap.c). Here are the important bits:
|
||||
|
||||
|
|
|
|||
|
|
@ -49,6 +49,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|||
#define BACKLIGHT_PIN B7
|
||||
#define BACKLIGHT_BREATHING
|
||||
|
||||
#define C6_AUDIO
|
||||
|
||||
/* COL2ROW or ROW2COL */
|
||||
#define DIODE_DIRECTION COL2ROW
|
||||
|
||||
|
|
|
|||
|
|
@ -37,6 +37,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|||
#define UNUSED_PINS
|
||||
|
||||
#define AUDIO_VOICES
|
||||
#define C6_AUDIO
|
||||
|
||||
#define BACKLIGHT_PIN B7
|
||||
|
||||
|
|
|
|||
|
|
@ -38,6 +38,7 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|||
#define UNUSED_PINS
|
||||
|
||||
#define AUDIO_VOICES
|
||||
#define C6_AUDIO
|
||||
|
||||
#define BACKLIGHT_PIN B7
|
||||
|
||||
|
|
|
|||
|
|
@ -33,17 +33,41 @@
|
|||
|
||||
// TIMSK3 - Timer/Counter #3 Interrupt Mask Register
|
||||
// Turn on/off 3A interputs, stopping/enabling the ISR calls
|
||||
#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
|
||||
#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
|
||||
#ifdef C6_AUDIO
|
||||
#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
|
||||
#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
#define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1A)
|
||||
#define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1A)
|
||||
#endif
|
||||
|
||||
// TCCR3A: Timer/Counter #3 Control Register
|
||||
// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
|
||||
#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
|
||||
#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
|
||||
|
||||
#ifdef C6_AUDIO
|
||||
#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
|
||||
#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
#define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1A1);
|
||||
#define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1A1) | _BV(COM1A0));
|
||||
#endif
|
||||
|
||||
// Fast PWM Mode Controls
|
||||
#define TIMER_3_PERIOD ICR3
|
||||
#define TIMER_3_DUTY_CYCLE OCR3A
|
||||
|
||||
#ifdef C6_AUDIO
|
||||
#define TIMER_3_PERIOD ICR3
|
||||
#define TIMER_3_DUTY_CYCLE OCR3A
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
#define TIMER_1_PERIOD ICR1
|
||||
#define TIMER_1_DUTY_CYCLE OCR1A
|
||||
#endif
|
||||
|
||||
|
||||
// -----------------------------------------------------------------------------
|
||||
|
||||
|
|
@ -51,6 +75,7 @@
|
|||
int voices = 0;
|
||||
int voice_place = 0;
|
||||
float frequency = 0;
|
||||
float frequency_alt = 0;
|
||||
int volume = 0;
|
||||
long position = 0;
|
||||
|
||||
|
|
@ -105,16 +130,43 @@ void audio_init()
|
|||
audio_config.raw = eeconfig_read_audio();
|
||||
|
||||
// Set port PC6 (OC3A and /OC4A) as output
|
||||
DDRC |= _BV(PORTC6);
|
||||
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
#ifdef C6_AUDIO
|
||||
DDRC |= _BV(PORTC6);
|
||||
#else
|
||||
DDRC |= _BV(PORTC6);
|
||||
PORTC &= ~_BV(PORTC6);
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
DDRB |= _BV(PORTB5);
|
||||
#else
|
||||
DDRB |= _BV(PORTB5);
|
||||
PORTB &= ~_BV(PORTB5);
|
||||
#endif
|
||||
|
||||
#ifdef C6_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_1_ISR;
|
||||
#endif
|
||||
|
||||
// TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
|
||||
// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
|
||||
// Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
|
||||
// Clock Select (CS3n) = 0b010 = Clock / 8
|
||||
TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
|
||||
TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
|
||||
|
||||
#ifdef C6_AUDIO
|
||||
TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
|
||||
TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
TCCR1A = (0 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10);
|
||||
TCCR1B = (1 << WGM13) | (1 << WGM12) | (0 << CS12) | (1 << CS11) | (0 << CS10);
|
||||
#endif
|
||||
|
||||
audio_initialized = true;
|
||||
}
|
||||
|
|
@ -128,12 +180,21 @@ void stop_all_notes()
|
|||
}
|
||||
voices = 0;
|
||||
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
|
||||
#ifdef C6_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_1_ISR;
|
||||
DISABLE_AUDIO_COUNTER_1_OUTPUT;
|
||||
#endif
|
||||
|
||||
playing_notes = false;
|
||||
playing_note = false;
|
||||
frequency = 0;
|
||||
frequency_alt = 0;
|
||||
volume = 0;
|
||||
|
||||
for (uint8_t i = 0; i < 8; i++)
|
||||
|
|
@ -171,9 +232,16 @@ void stop_note(float freq)
|
|||
voice_place = 0;
|
||||
}
|
||||
if (voices == 0) {
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#ifdef C6_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
DISABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#endif
|
||||
#ifdef B5_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_1_ISR;
|
||||
DISABLE_AUDIO_COUNTER_1_OUTPUT;
|
||||
#endif
|
||||
frequency = 0;
|
||||
frequency_alt = 0;
|
||||
volume = 0;
|
||||
playing_note = false;
|
||||
}
|
||||
|
|
@ -200,12 +268,56 @@ float vibrato(float average_freq) {
|
|||
|
||||
#endif
|
||||
|
||||
#ifdef C6_AUDIO
|
||||
ISR(TIMER3_COMPA_vect)
|
||||
{
|
||||
float freq;
|
||||
|
||||
if (playing_note) {
|
||||
if (voices > 0) {
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
float freq_alt = 0;
|
||||
if (voices > 1) {
|
||||
if (polyphony_rate == 0) {
|
||||
if (glissando) {
|
||||
if (frequency_alt != 0 && frequency_alt < frequencies[voices - 2] && frequency_alt < frequencies[voices - 2] * pow(2, -440/frequencies[voices - 2]/12/2)) {
|
||||
frequency_alt = frequency_alt * pow(2, 440/frequency_alt/12/2);
|
||||
} else if (frequency_alt != 0 && frequency_alt > frequencies[voices - 2] && frequency_alt > frequencies[voices - 2] * pow(2, 440/frequencies[voices - 2]/12/2)) {
|
||||
frequency_alt = frequency_alt * pow(2, -440/frequency_alt/12/2);
|
||||
} else {
|
||||
frequency_alt = frequencies[voices - 2];
|
||||
}
|
||||
} else {
|
||||
frequency_alt = frequencies[voices - 2];
|
||||
}
|
||||
|
||||
#ifdef VIBRATO_ENABLE
|
||||
if (vibrato_strength > 0) {
|
||||
freq_alt = vibrato(frequency_alt);
|
||||
} else {
|
||||
freq_alt = frequency_alt;
|
||||
}
|
||||
#else
|
||||
freq_alt = frequency_alt;
|
||||
#endif
|
||||
}
|
||||
|
||||
if (envelope_index < 65535) {
|
||||
envelope_index++;
|
||||
}
|
||||
|
||||
freq_alt = voice_envelope(freq_alt);
|
||||
|
||||
if (freq_alt < 30.517578125) {
|
||||
freq_alt = 30.52;
|
||||
}
|
||||
|
||||
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (freq_alt * CPU_PRESCALER));
|
||||
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq_alt * CPU_PRESCALER)) * note_timbre);
|
||||
}
|
||||
#endif
|
||||
|
||||
if (polyphony_rate > 0) {
|
||||
if (voices > 1) {
|
||||
voice_place %= voices;
|
||||
|
|
@ -328,6 +440,140 @@ ISR(TIMER3_COMPA_vect)
|
|||
playing_note = false;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef B5_AUDIO
|
||||
ISR(TIMER1_COMPA_vect)
|
||||
{
|
||||
#if defined(B5_AUDIO) && !defined(C6_AUDIO)
|
||||
float freq = 0;
|
||||
|
||||
if (playing_note) {
|
||||
if (voices > 0) {
|
||||
if (polyphony_rate > 0) {
|
||||
if (voices > 1) {
|
||||
voice_place %= voices;
|
||||
if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
|
||||
voice_place = (voice_place + 1) % voices;
|
||||
place = 0.0;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef VIBRATO_ENABLE
|
||||
if (vibrato_strength > 0) {
|
||||
freq = vibrato(frequencies[voice_place]);
|
||||
} else {
|
||||
freq = frequencies[voice_place];
|
||||
}
|
||||
#else
|
||||
freq = frequencies[voice_place];
|
||||
#endif
|
||||
} else {
|
||||
if (glissando) {
|
||||
if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440/frequencies[voices - 1]/12/2)) {
|
||||
frequency = frequency * pow(2, 440/frequency/12/2);
|
||||
} else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440/frequencies[voices - 1]/12/2)) {
|
||||
frequency = frequency * pow(2, -440/frequency/12/2);
|
||||
} else {
|
||||
frequency = frequencies[voices - 1];
|
||||
}
|
||||
} else {
|
||||
frequency = frequencies[voices - 1];
|
||||
}
|
||||
|
||||
#ifdef VIBRATO_ENABLE
|
||||
if (vibrato_strength > 0) {
|
||||
freq = vibrato(frequency);
|
||||
} else {
|
||||
freq = frequency;
|
||||
}
|
||||
#else
|
||||
freq = frequency;
|
||||
#endif
|
||||
}
|
||||
|
||||
if (envelope_index < 65535) {
|
||||
envelope_index++;
|
||||
}
|
||||
|
||||
freq = voice_envelope(freq);
|
||||
|
||||
if (freq < 30.517578125) {
|
||||
freq = 30.52;
|
||||
}
|
||||
|
||||
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
|
||||
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
|
||||
}
|
||||
}
|
||||
|
||||
if (playing_notes) {
|
||||
if (note_frequency > 0) {
|
||||
#ifdef VIBRATO_ENABLE
|
||||
if (vibrato_strength > 0) {
|
||||
freq = vibrato(note_frequency);
|
||||
} else {
|
||||
freq = note_frequency;
|
||||
}
|
||||
#else
|
||||
freq = note_frequency;
|
||||
#endif
|
||||
|
||||
if (envelope_index < 65535) {
|
||||
envelope_index++;
|
||||
}
|
||||
freq = voice_envelope(freq);
|
||||
|
||||
TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
|
||||
TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
|
||||
} else {
|
||||
TIMER_1_PERIOD = 0;
|
||||
TIMER_1_DUTY_CYCLE = 0;
|
||||
}
|
||||
|
||||
note_position++;
|
||||
bool end_of_note = false;
|
||||
if (TIMER_1_PERIOD > 0) {
|
||||
end_of_note = (note_position >= (note_length / TIMER_1_PERIOD * 0xFFFF));
|
||||
} else {
|
||||
end_of_note = (note_position >= (note_length * 0x7FF));
|
||||
}
|
||||
|
||||
if (end_of_note) {
|
||||
current_note++;
|
||||
if (current_note >= notes_count) {
|
||||
if (notes_repeat) {
|
||||
current_note = 0;
|
||||
} else {
|
||||
DISABLE_AUDIO_COUNTER_1_ISR;
|
||||
DISABLE_AUDIO_COUNTER_1_OUTPUT;
|
||||
playing_notes = false;
|
||||
return;
|
||||
}
|
||||
}
|
||||
if (!note_resting && (notes_rest > 0)) {
|
||||
note_resting = true;
|
||||
note_frequency = 0;
|
||||
note_length = notes_rest;
|
||||
current_note--;
|
||||
} else {
|
||||
note_resting = false;
|
||||
envelope_index = 0;
|
||||
note_frequency = (*notes_pointer)[current_note][0];
|
||||
note_length = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
|
||||
}
|
||||
|
||||
note_position = 0;
|
||||
}
|
||||
}
|
||||
|
||||
if (!audio_config.enable) {
|
||||
playing_notes = false;
|
||||
playing_note = false;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
|
||||
void play_note(float freq, int vol) {
|
||||
|
||||
|
|
@ -338,7 +584,12 @@ void play_note(float freq, int vol) {
|
|||
}
|
||||
|
||||
if (audio_config.enable && voices < 8) {
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
#ifdef C6_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
#endif
|
||||
#ifdef B5_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_1_ISR;
|
||||
#endif
|
||||
|
||||
// Cancel notes if notes are playing
|
||||
if (playing_notes)
|
||||
|
|
@ -354,8 +605,21 @@ void play_note(float freq, int vol) {
|
|||
voices++;
|
||||
}
|
||||
|
||||
ENABLE_AUDIO_COUNTER_3_ISR;
|
||||
ENABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#ifdef C6_AUDIO
|
||||
ENABLE_AUDIO_COUNTER_3_ISR;
|
||||
ENABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#endif
|
||||
#ifdef B5_AUDIO
|
||||
#ifdef C6_AUDIO
|
||||
if (voices > 1) {
|
||||
ENABLE_AUDIO_COUNTER_1_ISR;
|
||||
ENABLE_AUDIO_COUNTER_1_OUTPUT;
|
||||
}
|
||||
#else
|
||||
ENABLE_AUDIO_COUNTER_1_ISR;
|
||||
ENABLE_AUDIO_COUNTER_1_OUTPUT;
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
}
|
||||
|
|
@ -369,7 +633,12 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
|
|||
|
||||
if (audio_config.enable) {
|
||||
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
#ifdef C6_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_3_ISR;
|
||||
#endif
|
||||
#ifdef B5_AUDIO
|
||||
DISABLE_AUDIO_COUNTER_1_ISR;
|
||||
#endif
|
||||
|
||||
// Cancel note if a note is playing
|
||||
if (playing_note)
|
||||
|
|
@ -390,8 +659,16 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest)
|
|||
note_position = 0;
|
||||
|
||||
|
||||
ENABLE_AUDIO_COUNTER_3_ISR;
|
||||
ENABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#ifdef C6_AUDIO
|
||||
ENABLE_AUDIO_COUNTER_3_ISR;
|
||||
ENABLE_AUDIO_COUNTER_3_OUTPUT;
|
||||
#endif
|
||||
#ifdef B5_AUDIO
|
||||
#ifndef C6_AUDIO
|
||||
ENABLE_AUDIO_COUNTER_1_ISR;
|
||||
ENABLE_AUDIO_COUNTER_1_OUTPUT;
|
||||
#endif
|
||||
#endif
|
||||
}
|
||||
|
||||
}
|
||||
|
|
|
|||
|
|
@ -44,7 +44,7 @@ float voice_envelope(float frequency) {
|
|||
|
||||
switch (voice) {
|
||||
case default_voice:
|
||||
glissando = true;
|
||||
glissando = false;
|
||||
note_timbre = TIMBRE_50;
|
||||
polyphony_rate = 0;
|
||||
break;
|
||||
|
|
|
|||
Loading…
Reference in a new issue