From eabf530a0eaffb5fb7d6ebe375225e2d8b0b559a Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Mon, 26 Jun 2017 22:24:30 -0400 Subject: [PATCH 1/5] b5 audio --- quantum/audio/audio.c | 260 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 240 insertions(+), 20 deletions(-) diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c index 59707361..f2948f18 100644 --- a/quantum/audio/audio.c +++ b/quantum/audio/audio.c @@ -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 + // ----------------------------------------------------------------------------- @@ -105,16 +129,43 @@ 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; } @@ -128,8 +179,16 @@ 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; @@ -171,8 +230,14 @@ 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; volume = 0; playing_note = false; @@ -200,6 +265,7 @@ float vibrato(float average_freq) { #endif +#ifdef C6_AUDIO ISR(TIMER3_COMPA_vect) { float freq; @@ -328,6 +394,138 @@ ISR(TIMER3_COMPA_vect) playing_note = false; } } +#endif + +#ifdef B5_AUDIO +ISR(TIMER1_COMPA_vect) +{ + float freq; + + 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 void play_note(float freq, int vol) { @@ -338,7 +536,12 @@ 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 +557,14 @@ 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 + ENABLE_AUDIO_COUNTER_1_ISR; + ENABLE_AUDIO_COUNTER_1_OUTPUT; + #endif } } @@ -369,7 +578,12 @@ 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 +604,14 @@ 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 + ENABLE_AUDIO_COUNTER_1_ISR; + ENABLE_AUDIO_COUNTER_1_OUTPUT; + #endif } } From bfc73e90cfc6532331d1532e2ff9020d25c96a69 Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Mon, 26 Jun 2017 23:13:27 -0400 Subject: [PATCH 2/5] working duopholy --- quantum/audio/audio.c | 62 ++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 58 insertions(+), 4 deletions(-) diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c index f2948f18..04f34600 100644 --- a/quantum/audio/audio.c +++ b/quantum/audio/audio.c @@ -75,6 +75,7 @@ int voices = 0; int voice_place = 0; float frequency = 0; +float frequency_alt = 0; int volume = 0; long position = 0; @@ -193,6 +194,7 @@ void stop_all_notes() playing_notes = false; playing_note = false; frequency = 0; + frequency_alt = 0; volume = 0; for (uint8_t i = 0; i < 8; i++) @@ -239,6 +241,7 @@ void stop_note(float freq) DISABLE_AUDIO_COUNTER_1_OUTPUT; #endif frequency = 0; + frequency_alt = 0; volume = 0; playing_note = false; } @@ -268,10 +271,52 @@ float vibrato(float average_freq) { #ifdef C6_AUDIO ISR(TIMER3_COMPA_vect) { - float freq; + float freq, freq_alt = 0; if (playing_note) { if (voices > 0) { + + #ifdef B5_AUDIO + 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; @@ -396,10 +441,10 @@ ISR(TIMER3_COMPA_vect) } #endif -#ifdef B5_AUDIO ISR(TIMER1_COMPA_vect) { - float freq; + #if defined(B5_AUDIO) && !defined(C6_AUDIO) + float freq = 0; if (playing_note) { if (voices > 0) { @@ -524,8 +569,8 @@ ISR(TIMER1_COMPA_vect) playing_notes = false; playing_note = false; } -} #endif +} void play_note(float freq, int vol) { @@ -562,8 +607,15 @@ void play_note(float freq, int vol) { 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 } @@ -609,8 +661,10 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) ENABLE_AUDIO_COUNTER_3_OUTPUT; #endif #ifdef B5_AUDIO + #ifndef C6_AUDIO ENABLE_AUDIO_COUNTER_1_ISR; ENABLE_AUDIO_COUNTER_1_OUTPUT; + #endif #endif } From b82604dadad81872abdb9fdde18086ee69e66671 Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Tue, 27 Jun 2017 14:12:25 -0400 Subject: [PATCH 3/5] no glide --- quantum/audio/voices.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c index 54ebd423..94147ccb 100644 --- a/quantum/audio/voices.c +++ b/quantum/audio/voices.c @@ -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; From ea7590c8940bc85f8a83bd42b1e01bc1431c104b Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Tue, 27 Jun 2017 14:35:08 -0400 Subject: [PATCH 4/5] add new arguements, docs --- docs/modding_your_keyboard.md | 2 +- keyboards/planck/config.h | 1 + keyboards/preonic/config.h | 1 + quantum/audio/audio.c | 3 ++- 4 files changed, 5 insertions(+), 2 deletions(-) diff --git a/docs/modding_your_keyboard.md b/docs/modding_your_keyboard.md index 2429570f..44e6e6e7 100644 --- a/docs/modding_your_keyboard.md +++ b/docs/modding_your_keyboard.md @@ -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: diff --git a/keyboards/planck/config.h b/keyboards/planck/config.h index 5cf96bb8..c86f8491 100644 --- a/keyboards/planck/config.h +++ b/keyboards/planck/config.h @@ -37,6 +37,7 @@ along with this program. If not, see . #define UNUSED_PINS #define AUDIO_VOICES +#define C6_AUDIO #define BACKLIGHT_PIN B7 diff --git a/keyboards/preonic/config.h b/keyboards/preonic/config.h index 239c29eb..8aa88b7f 100644 --- a/keyboards/preonic/config.h +++ b/keyboards/preonic/config.h @@ -38,6 +38,7 @@ along with this program. If not, see . #define UNUSED_PINS #define AUDIO_VOICES +#define C6_AUDIO #define BACKLIGHT_PIN B7 diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c index 04f34600..3192d500 100644 --- a/quantum/audio/audio.c +++ b/quantum/audio/audio.c @@ -271,12 +271,13 @@ float vibrato(float average_freq) { #ifdef C6_AUDIO ISR(TIMER3_COMPA_vect) { - float freq, freq_alt = 0; + float freq; if (playing_note) { if (voices > 0) { #ifdef B5_AUDIO + float freq_alt = 0; if (voices > 1) { if (polyphony_rate == 0) { if (glissando) { From 7d28a417c035b66529d7f6d49479fe4c22737134 Mon Sep 17 00:00:00 2001 From: Jack Humbert Date: Tue, 27 Jun 2017 15:28:13 -0400 Subject: [PATCH 5/5] don't let timer1 exist without b5 being enabled --- keyboards/atomic/keymaps/pvc/config.h | 2 ++ quantum/audio/audio.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/keyboards/atomic/keymaps/pvc/config.h b/keyboards/atomic/keymaps/pvc/config.h index 18a7253f..ea5821ee 100644 --- a/keyboards/atomic/keymaps/pvc/config.h +++ b/keyboards/atomic/keymaps/pvc/config.h @@ -49,6 +49,8 @@ along with this program. If not, see . #define BACKLIGHT_PIN B7 #define BACKLIGHT_BREATHING +#define C6_AUDIO + /* COL2ROW or ROW2COL */ #define DIODE_DIRECTION COL2ROW diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c index 3192d500..c924f2bd 100644 --- a/quantum/audio/audio.c +++ b/quantum/audio/audio.c @@ -442,6 +442,7 @@ ISR(TIMER3_COMPA_vect) } #endif +#ifdef B5_AUDIO ISR(TIMER1_COMPA_vect) { #if defined(B5_AUDIO) && !defined(C6_AUDIO) @@ -572,6 +573,7 @@ ISR(TIMER1_COMPA_vect) } #endif } +#endif void play_note(float freq, int vol) {