add audio for atmega32a
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					 4 changed files with 74 additions and 78 deletions
				
			
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			@ -36,10 +36,10 @@
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// -----------------------------------------------------------------------------
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//Currently we support timers 1 and 3 used at the sime time, channels A-C,
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//pins PB5, PB6, PB7, PC4, PC5, and PC6
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//pins PB5, PB6, PB7, PC4, PC5, PC6, PD5, PD4
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#if defined(C6_AUDIO)
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    #define CPIN_AUDIO
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    #define CPIN_SET_DIRECTION DDRC |= _BV(PORTC6);
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    #define TIMER_3_AUDIO
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    #define TIMER_3_SET_DIRECTION DDRC |= _BV(PORTC6);
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    #define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
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    #define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
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    #define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
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			@ -50,8 +50,8 @@
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    #define TIMER3_AUDIO_vect TIMER3_COMPA_vect
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#endif
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#if defined(C5_AUDIO)
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    #define CPIN_AUDIO
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    #define CPIN_SET_DIRECTION DDRC |= _BV(PORTC5);
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    #define TIMER_3_AUDIO
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    #define TIMER_3_SET_DIRECTION DDRC |= _BV(PORTC5);
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    #define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3B1) | (0 << COM3B0) | (1 << WGM31) | (0 << WGM30);
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    #define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3B)
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    #define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3B)
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			@ -62,8 +62,8 @@
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    #define TIMER3_AUDIO_vect TIMER3_COMPB_vect
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#endif
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#if defined(C4_AUDIO)
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    #define CPIN_AUDIO
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    #define CPIN_SET_DIRECTION DDRC |= _BV(PORTC4);
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    #define TIMER_3_AUDIO
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    #define TIMER_3_SET_DIRECTION DDRC |= _BV(PORTC4);
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    #define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3C1) | (0 << COM3C0) | (1 << WGM31) | (0 << WGM30);
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    #define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3C)
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    #define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3C)
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			@ -75,8 +75,8 @@
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#endif
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#if defined(B5_AUDIO)
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    #define BPIN_AUDIO
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    #define BPIN_SET_DIRECTION DDRB |= _BV(PORTB5);
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    #define TIMER_1_AUDIO
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    #define TIMER_1_SET_DIRECTION DDRB |= _BV(PORTB5);
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    #define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10);
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    #define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1A)
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    #define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1A)
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			@ -87,8 +87,8 @@
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    #define TIMER1_AUDIO_vect TIMER1_COMPA_vect
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#endif
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#if defined(B6_AUDIO)
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    #define BPIN_AUDIO
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    #define BPIN_SET_DIRECTION DDRB |= _BV(PORTB6);
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    #define TIMER_1_AUDIO
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    #define TIMER_1_SET_DIRECTION DDRB |= _BV(PORTB6);
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    #define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1B1) | (0 << COM1B0) | (1 << WGM11) | (0 << WGM10);
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    #define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1B)
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    #define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1B)
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			@ -99,8 +99,8 @@
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    #define TIMER1_AUDIO_vect TIMER1_COMPB_vect
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#endif
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#if defined(B7_AUDIO)
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    #define BPIN_AUDIO
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    #define BPIN_SET_DIRECTION DDRB |= _BV(PORTB7);
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    #define TIMER_1_AUDIO
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    #define TIMER_1_SET_DIRECTION DDRB |= _BV(PORTB7);
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    #define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1C1) | (0 << COM1C0) | (1 << WGM11) | (0 << WGM10);
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    #define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1C)
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    #define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1C)
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			@ -110,6 +110,30 @@
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    #define TIMER_1_DUTY_CYCLE OCR1C
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    #define TIMER1_AUDIO_vect TIMER1_COMPC_vect
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#endif
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#if defined(D5_AUDIO)
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    #define TIMER_1_AUDIO
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    #define TIMER_1_SET_DIRECTION DDRD |= _BV(PORTD5);
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    #define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10);
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    #define ENABLE_AUDIO_COUNTER_1_ISR TIMSK |= _BV(OCIE1A)
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    #define DISABLE_AUDIO_COUNTER_1_ISR TIMSK &= ~_BV(OCIE1A)
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    #define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1A1);
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    #define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1A1) | _BV(COM1A0));
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    #define TIMER_1_PERIOD     ICR1
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    #define TIMER_1_DUTY_CYCLE OCR1A
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    #define TIMER1_AUDIO_vect TIMER1_COMPA_vect
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#endif
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#if defined(D4_AUDIO)
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    #define TIMER_1_AUDIO
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    #define TIMER_1_SET_DIRECTION DDRD |= _BV(PORTD4);
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    #define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1A1) | (0 << COM1B0) | (1 << WGM11) | (0 << WGM10);
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    #define ENABLE_AUDIO_COUNTER_1_ISR TIMSK |= _BV(OCIE1B)
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    #define DISABLE_AUDIO_COUNTER_1_ISR TIMSK &= ~_BV(OCIE1B)
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    #define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1B1);
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    #define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1A1) | _BV(COM1A0));
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    #define TIMER_1_PERIOD     ICR1
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    #define TIMER_1_DUTY_CYCLE OCR1B
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    #define TIMER1_AUDIO_vect TIMER1_COMPB_vect
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#endif
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// -----------------------------------------------------------------------------
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			@ -185,12 +209,12 @@ void audio_init()
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    if (!audio_initialized) {
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        // Set audio ports as output
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        #ifdef CPIN_AUDIO
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          CPIN_SET_DIRECTION
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        #ifdef TIMER_3_AUDIO
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          TIMER_3_SET_DIRECTION
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          DISABLE_AUDIO_COUNTER_3_ISR;
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        #endif
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        #ifdef BPIN_AUDIO
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          BPIN_SET_DIRECTION
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        #ifdef TIMER_1_AUDIO
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          TIMER_1_SET_DIRECTION
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          DISABLE_AUDIO_COUNTER_1_ISR;
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        #endif
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			@ -212,18 +236,18 @@ void audio_init()
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        //   OCR1C - PB7
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        // Clock Select (CS3n) = 0b010 = Clock / 8
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        #ifdef CPIN_AUDIO
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        #ifdef TIMER_3_AUDIO
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            INIT_AUDIO_COUNTER_3
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            TCCR3B = (1 << WGM33)  | (1 << WGM32)  | (0 << CS32)  | (1 << CS31) | (0 << CS30);
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            TIMER_3_PERIOD = (uint16_t)(((float)F_CPU) / (440 * CPU_PRESCALER));
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            TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (440 * CPU_PRESCALER)) * note_timbre);
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        #endif
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        #ifdef BPIN_AUDIO
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        #ifdef TIMER_1_AUDIO
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            INIT_AUDIO_COUNTER_1
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            TCCR1B = (1 << WGM13)  | (1 << WGM12)  | (0 << CS12)  | (1 << CS11) | (0 << CS10);
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            TIMER_1_PERIOD = (uint16_t)(((float)F_CPU) / (440 * CPU_PRESCALER));
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            TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (440 * CPU_PRESCALER)) * note_timbre);
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        #endif 
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        #endif
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        audio_initialized = true;
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    }
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			@ -231,7 +255,7 @@ void audio_init()
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    if (audio_config.enable) {
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        PLAY_SONG(startup_song);
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    }
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}
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void stop_all_notes()
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			@ -243,12 +267,12 @@ void stop_all_notes()
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    }
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    voices = 0;
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    #ifdef CPIN_AUDIO
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    #ifdef TIMER_3_AUDIO
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        DISABLE_AUDIO_COUNTER_3_ISR;
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        DISABLE_AUDIO_COUNTER_3_OUTPUT;
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    #endif
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    #ifdef BPIN_AUDIO
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    #ifdef TIMER_1_AUDIO
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        DISABLE_AUDIO_COUNTER_1_ISR;
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        DISABLE_AUDIO_COUNTER_1_OUTPUT;
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    #endif
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			@ -294,11 +318,11 @@ void stop_note(float freq)
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            voice_place = 0;
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        }
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        if (voices == 0) {
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            #ifdef CPIN_AUDIO
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            #ifdef TIMER_3_AUDIO
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                DISABLE_AUDIO_COUNTER_3_ISR;
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                DISABLE_AUDIO_COUNTER_3_OUTPUT;
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            #endif
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            #ifdef BPIN_AUDIO
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            #ifdef TIMER_1_AUDIO
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                DISABLE_AUDIO_COUNTER_1_ISR;
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                DISABLE_AUDIO_COUNTER_1_OUTPUT;
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            #endif
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			@ -330,7 +354,7 @@ float vibrato(float average_freq) {
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#endif
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#ifdef CPIN_AUDIO
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#ifdef TIMER_3_AUDIO
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ISR(TIMER3_AUDIO_vect)
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{
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    float freq;
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			@ -338,7 +362,7 @@ ISR(TIMER3_AUDIO_vect)
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    if (playing_note) {
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        if (voices > 0) {
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            #ifdef BPIN_AUDIO
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            #ifdef TIMER_1_AUDIO
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            float freq_alt = 0;
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                if (voices > 1) {
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                    if (polyphony_rate == 0) {
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			@ -464,7 +488,7 @@ ISR(TIMER3_AUDIO_vect)
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        note_position++;
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        bool end_of_note = false;
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        if (TIMER_3_PERIOD > 0) {
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            if (!note_resting) 
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            if (!note_resting)
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                end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF - 1));
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            else
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                end_of_note = (note_position >= (note_length));
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			@ -512,10 +536,10 @@ ISR(TIMER3_AUDIO_vect)
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}
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#endif
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#ifdef BPIN_AUDIO
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#ifdef TIMER_1_AUDIO
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ISR(TIMER1_AUDIO_vect)
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{
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    #if defined(BPIN_AUDIO) && !defined(CPIN_AUDIO)
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    #if defined(TIMER_1_AUDIO) && !defined(TIMER_3_AUDIO)
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    float freq = 0;
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    if (playing_note) {
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			@ -604,7 +628,7 @@ ISR(TIMER1_AUDIO_vect)
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        note_position++;
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        bool end_of_note = false;
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        if (TIMER_1_PERIOD > 0) {
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            if (!note_resting) 
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            if (!note_resting)
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                end_of_note = (note_position >= (note_length / TIMER_1_PERIOD * 0xFFFF - 1));
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            else
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                end_of_note = (note_position >= (note_length));
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			@ -662,10 +686,10 @@ void play_note(float freq, int vol) {
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    }
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    if (audio_config.enable && voices < 8) {
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        #ifdef CPIN_AUDIO
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        #ifdef TIMER_3_AUDIO
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            DISABLE_AUDIO_COUNTER_3_ISR;
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        #endif
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        #ifdef BPIN_AUDIO
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        #ifdef TIMER_1_AUDIO
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            DISABLE_AUDIO_COUNTER_1_ISR;
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        #endif
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			@ -683,12 +707,12 @@ void play_note(float freq, int vol) {
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            voices++;
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        }
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        #ifdef CPIN_AUDIO
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        #ifdef TIMER_3_AUDIO
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            ENABLE_AUDIO_COUNTER_3_ISR;
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            ENABLE_AUDIO_COUNTER_3_OUTPUT;
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        #endif
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        #ifdef BPIN_AUDIO
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            #ifdef CPIN_AUDIO
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        #ifdef TIMER_1_AUDIO
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            #ifdef TIMER_3_AUDIO
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            if (voices > 1) {
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                ENABLE_AUDIO_COUNTER_1_ISR;
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                ENABLE_AUDIO_COUNTER_1_OUTPUT;
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			@ -711,10 +735,10 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat)
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    if (audio_config.enable) {
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        #ifdef CPIN_AUDIO
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        #ifdef TIMER_3_AUDIO
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            DISABLE_AUDIO_COUNTER_3_ISR;
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        #endif
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        #ifdef BPIN_AUDIO
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        #ifdef TIMER_1_AUDIO
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            DISABLE_AUDIO_COUNTER_1_ISR;
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        #endif
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			@ -736,12 +760,12 @@ void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat)
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        note_position = 0;
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        #ifdef CPIN_AUDIO
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        #ifdef TIMER_3_AUDIO
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            ENABLE_AUDIO_COUNTER_3_ISR;
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            ENABLE_AUDIO_COUNTER_3_OUTPUT;
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        #endif
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        #ifdef BPIN_AUDIO
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            #ifndef CPIN_AUDIO
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        #ifdef TIMER_1_AUDIO
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            #ifndef TIMER_3_AUDIO
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            ENABLE_AUDIO_COUNTER_1_ISR;
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            ENABLE_AUDIO_COUNTER_1_OUTPUT;
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            #endif
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