Updated Music.h and added MIDI functionality to it
This commit is contained in:
Jakob Bak
parent
8bd5f2b35c
commit
fe929b835e
BIN
hardware/eagle/v1/mm.controller.v1.pdf
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BIN
hardware/eagle/v1/mm.controller.v1.pdf
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@ -25,49 +25,114 @@
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#ifndef Music_h // include guard
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#define Music_h
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//#include <avr/io.h> // see if needed
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#include "Arduino.h"
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#include <avr/interrupt.h>
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#include <avr/pgmspace.h>
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#include <hardwareSerial.h>
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#include "Wavetable.h"
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// current sample rate is 15625 as defined in the init() section
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#define SAMPLE_RATE 15625
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#ifndef NUM_OSCILLATORS
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#define NUM_OSCILLATORS 1
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#elif (NUM_OSCILLATORS == 1)||(NUM_OSCILLATORS == 2)||(NUM_OSCILLATORS == 3)
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#else
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#error NUM_OSCILLATORS shall be 1, 2 or 3
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#endif
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#ifndef BIT_DEPTH
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#define BIT_DEPTH 8
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#elif (BIT_DEPTH == 8)||(BIT_DEPTH == 12)
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#else
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#error BIT_DEPTH shall be 8 or 12
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#endif
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// Maximum possible value for amplification envelope
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#define MAX_ENV_GAIN 65535
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// Table of MIDI note values to frequency in Hertz
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prog_uint16_t hertsTable[] PROGMEM = {8,8,9,9,10,10,11,12,12,13,14,15,16,17,18,19,20,21,23,24,25,27,29,30,32,34,36,38,41,43,46,48,51,54,58,61,65,69,73,77,82,87,92,97,103,109,116,123,130,138,146,155,164,174,184,195,207,219,233,246,261,277,293,311,329,349,369,391,415,440,466,493,523,554,587,622,659,698,739,783,830,880,932,987,1046,1108,1174,1244,1318,1396,1479,1567,1661,1760,1864,1975,2093,2217,2349,2489,2637,2793,2959,3135,3322,3520,3729,3951,4186,4434,4698,4978,5274,5587,5919,6271,6644,7040,7458,7902,8372,8869,9397,9956,10548,11175,11839,12543};
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prog_uint32_t envTimeTable[] PROGMEM = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,33,34,35,36,37,38,39,41,42,43,45,46,48,49,51,53,55,57,59,61,63,65,67,70,73,75,78,81,85,88,92,96,100,104,109,114,119,125,131,138,146,154,163,172,183,195,209,225,242,261,284,310,341,379,425,482,556,654,792,998,1342,2030,4095};
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float semitoneTable[] = {0.25,0.2648658,0.2806155,0.29730177,0.31498027,0.33370996,0.35355338,0.37457678,0.39685026,0.4204482,0.44544938,0.47193715,0.5,0.5297315,0.561231,0.59460354,0.62996054,0.6674199,0.70710677,0.74915355,0.7937005,0.8408964,0.8908987,0.9438743,1.0,1.0594631,1.122462,1.1892071,1.2599211,1.3348398,1.4142135,1.4983071,1.587401,1.6817929,1.7817974,1.8877486,2.0,2.1189263,2.244924,2.3784142,2.5198421,2.6696796,2.828427,2.9966142,3.174802,3.3635857,3.563595,3.7754972,4.0};
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// Defining which pins the SPI interface is connected to.
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#define SPI_SCK 5
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#define SPI_MOSI 3
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// Checking of NUM_OSCILLATORS is set, and if not, default to 1 oscillator
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#ifndef NUM_OSCILLATORS
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#define NUM_OSCILLATORS 1
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#elif (NUM_OSCILLATORS == 1)||(NUM_OSCILLATORS == 2)||(NUM_OSCILLATORS == 3)
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#else
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#error NUM_OSCILLATORS shall be 1, 2 or 3
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#endif
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// Checking of BIT_DEPTH is set, and if not, default to 8bit
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#ifndef BIT_DEPTH
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#define BIT_DEPTH 8
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#elif (BIT_DEPTH == 8)||(BIT_DEPTH == 12)
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#else
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#error BIT_DEPTH shall be 8 or 12
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#endif
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// Shortnames for waveforms
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#define SINE 0
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#define SQUARE 1
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#define PULSE 2
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#define TRIANGLE 3
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#define SAW 4
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#define FUZZ 5
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#define DIGI1 6
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#define DIGI2 7
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#define DIGI3 8
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#define DIGI4 9
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#define NOISE 10
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#define DIGI6 11
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#define TAN1 12
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#define TAN2 13
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#define TAN3 14
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#define TAN4 15
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// Maximum possible value for amplification envelope in audio code
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#define MAX_ENV_GAIN 65535
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// MIDI specific constants
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#ifndef MIDI_CHANNEL
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#define MIDI_CHANNEL 1
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#elif (MIDI_CHANNEL > 0)&&(MIDI_CHANNEL < 17)
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#else
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#error MIDI_CHANNEL should be between 1 - 16
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#endif
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//synth parameters as MIDI controller numbers
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#define DETUNE 4
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#define WAVEFORM 5
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#define PORTAMENTO 6 // not implemented yet
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#define FREQUENCY1 10
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#define SEMITONE1 11
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#define DETUNE1 12
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#define GAIN1 13
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#define WAVEFORM1 14
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#define FREQUENCY2 20
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#define SEMITONE2 21
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#define DETUNE2 22
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#define GAIN2 23
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#define WAVEFORM2 24
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#define FREQUENCY3 30
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#define SEMITONE3 31
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#define DETUNE3 32
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#define GAIN3 33
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#define WAVEFORM3 34
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#define ENV_ATTACK 114
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#define ENV_DECAY 115
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#define ENV_SUSTAIN 116
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#define ENV_RELEASE 117
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// Table of MIDI note values to frequency in Hertz
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prog_uint16_t hertzTable[] PROGMEM = {8,8,9,9,10,10,11,12,12,13,14,15,16,17,18,19,20,21,23,24,25,27,29,30,32,34,36,38,41,43,46,48,51,54,58,61,65,69,73,77,82,87,92,97,103,109,116,123,130,138,146,155,164,174,184,195,207,219,233,246,261,277,293,311,329,349,369,391,415,440,466,493,523,554,587,622,659,698,739,783,830,880,932,987,1046,1108,1174,1244,1318,1396,1479,1567,1661,1760,1864,1975,2093,2217,2349,2489,2637,2793,2959,3135,3322,3520,3729,3951,4186,4434,4698,4978,5274,5587,5919,6271,6644,7040,7458,7902,8372,8869,9397,9956,10548,11175,11839,12543};
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// Used in the functions that set the envelope timing
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prog_uint32_t envTimeTable[] PROGMEM = {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,73,75,77,79,81,83,85,87,89,92,95,98,101,104,108,112,116,120,124,128,132,136,140,145,150,155,160,165,170,176,182,188,194,201,208,215,222,230,238,247,257,268,280,293,307,322,341,379,425,482,556,654,792,998,1342,2030,4095};
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float semitoneTable[] = {0.25,0.2648658,0.2806155,0.29730177,0.31498027,0.33370996,0.35355338,0.37457678,0.39685026,0.4204482,0.44544938,0.47193715,0.5,0.5297315,0.561231,0.59460354,0.62996054,0.6674199,0.70710677,0.74915355,0.7937005,0.8408964,0.8908987,0.9438743,1.0,1.0594631,1.122462,1.1892071,1.2599211,1.3348398,1.4142135,1.4983071,1.587401,1.6817929,1.7817974,1.8877486,2.0,2.1189263,2.244924,2.3784142,2.5198421,2.6696796,2.828427,2.9966142,3.174802,3.3635857,3.563595,3.7754972,4.0};
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// MMusic class for handling sound engine
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class MMusic {
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public:
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@ -99,14 +164,14 @@ public:
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void setWaveform3(uint16_t waveForm); //
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// GAIN FUNCTIONS
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void setGain(float value); // 0.0 - 1.0 USE THIS
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void setGain1(float value); // 0.0 - 1.0 USE THIS
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void setGain2(float value); // 0.0 - 1.0 USE THIS
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void setGain3(float value); // 0.0 - 1.0 USE THIS
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float getGain(); // 0.0 - 1.0 USE THIS
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float getGain1(); // 0.0 - 1.0 USE THIS
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float getGain2(); // 0.0 - 1.0 USE THIS
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float getGain3(); // 0.0 - 1.0 USE THIS
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void setGain(float value); // 0.0 - 1.0
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void setGain1(float value); // 0.0 - 1.0
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void setGain2(float value); // 0.0 - 1.0
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void setGain3(float value); // 0.0 - 1.0
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float getGain(); // 0.0 - 1.0
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float getGain1(); // 0.0 - 1.0
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float getGain2(); // 0.0 - 1.0
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float getGain3(); // 0.0 - 1.0
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// NOTE FUNCTIONS
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void noteOn(uint8_t note, uint8_t vel); // 0 - 255
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@ -125,10 +190,10 @@ public:
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void setSustain16bit(uint16_t sus); // 0 - 65535
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void setRelease16bit(uint16_t rel); // 0 - 65535
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void setAttack(uint8_t att); // 0 - 127 USE THESE ONES
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void setDecay(uint8_t dec); // 0 - 127 USE THESE ONES
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void setSustain(uint8_t sus); // 0 - 127 USE THESE ONES
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void setRelease(uint8_t rel); // 0 - 127 USE THESE ONES
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void setAttack(uint8_t att); // 0 - 127
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void setDecay(uint8_t dec); // 0 - 127
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void setSustain(uint8_t sus); // 0 - 127
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void setRelease(uint8_t rel); // 0 - 127
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void setVelSustain(uint8_t vel); // 0 - 127
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void setVelPeak(uint8_t vel); // 0 - 127
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@ -207,6 +272,67 @@ extern MMusic Music;
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#ifdef MIDI
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// MMidi class for handling MIDI implementation
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class MMidi {
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public:
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void init();
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void checkMidi();
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void midiHandler();
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void noteOff(uint8_t channel, uint8_t note, uint8_t vel);
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void noteOn(uint8_t channel, uint8_t note, uint8_t vel);
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void aftertouch(uint8_t channel, uint8_t note, uint8_t pressure);
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void controller(uint8_t channel, uint8_t number, uint8_t value);
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void programChange(uint8_t channel, uint8_t number);
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void channelPressure(uint8_t channel, uint8_t pressure);
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void pitchWheel(uint8_t channel, uint8_t highBits, uint8_t lowBits);
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private:
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// MIDI
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uint8_t data;
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uint8_t midiBuffer[3];
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uint8_t midiChannel;
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int midiBufferIndex;
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uint16_t frequency;
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uint8_t notePlayed;
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};
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extern MMidi Midi;
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#endif
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//////////////////////////////////////////////////////////
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//
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// AUDIO INTERRUPT - The pre-processor selects 8 or 12 bit
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//
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//////////////////////////////////////////////////////////
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ISR(TIMER2_COMPA_vect) { // timer 2 is audio interrupt timer
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OCR2A = 127; // don't change this
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#if BIT_DEPTH == 8
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Music.synthInterrupt8bit();
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#endif
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#if BIT_DEPTH == 12
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Music.synthInterrupt12bitSine();
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#endif
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}
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/////////////////////////////////////////////////////////
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//
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@ -283,15 +409,15 @@ void inline MMusic::synthInterrupt8bit()
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envStage = 0;
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}
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}
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/*
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// No gain
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else if (envStage == 0) {
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env = 0;
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accumulator1 = 0;
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accumulator2 = 0;
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accumulator3 = 0;
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//accumulator1 = 0;
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//accumulator2 = 0;
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//accumulator3 = 0;
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}
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*/
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} else {
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env = 65535;
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}
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@ -428,7 +554,6 @@ void MMusic::synthInterrupt12bitSine()
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// Frame sync high
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PORTD |= (1<<3);
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}
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@ -436,31 +561,9 @@ void MMusic::synthInterrupt12bitSine()
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MMusic Music;
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//////////////////////////////////////////////////////////
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//
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// AUDIO INTERRUPT. USE EITHER 8bit or 12bitSine VERSION
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// COMMENT OUT THE ONE YOU ARE NOT USING
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//
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//////////////////////////////////////////////////////////
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ISR(TIMER2_COMPA_vect) { // timer 2 is audio interrupt timer
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OCR2A = 127; // don't change this
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#if BIT_DEPTH == 8
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Music.synthInterrupt8bit();
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#ifdef MIDI
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MMidi Midi;
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#endif
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#if BIT_DEPTH == 12
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Music.synthInterrupt12bitSine();
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#endif
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}
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@ -760,7 +863,7 @@ void MMusic::noteOn(uint8_t note, uint8_t vel)
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setVelSustain(vel);
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setVelPeak(vel);
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notePlayed = note;
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memcpy_P(&frequency16bit, &hertsTable[notePlayed],2);
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memcpy_P(&frequency16bit, &hertzTable[notePlayed],2);
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setFrequency1(frequency16bit);
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setFrequency2(frequency16bit);
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setFrequency3(frequency16bit);
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@ -773,7 +876,7 @@ void MMusic::noteOn(uint8_t note)
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setVelSustain(127);
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setVelPeak(127);
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notePlayed = note;
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memcpy_P(&frequency16bit, &hertsTable[notePlayed],2);
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memcpy_P(&frequency16bit, &hertzTable[notePlayed],2);
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setFrequency1(frequency16bit);
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setFrequency2(frequency16bit);
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setFrequency3(frequency16bit);
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@ -882,5 +985,233 @@ void MMusic::setVelPeak(uint8_t vel)
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velPeak = vel * (MAX_ENV_GAIN / 128);
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}
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#ifdef MIDI
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/////////////////////////////////////
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//
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// MIDI specific functions
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//
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/////////////////////////////////////
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bool midiRead = false;
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void MMidi::init()
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{
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Serial.begin(115200);
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midiBufferIndex = 0;
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midiChannel = MIDI_CHANNEL - 1;
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if(midiChannel < 0 || midiChannel > 15) midiChannel = 0;
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}
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void MMidi::checkMidi()
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{
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while(Serial.available() > 0) {
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data = Serial.read();
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if(data & 0x80 && (data & 0x0F) == midiChannel) { // bitmask with 10000000 to see if byte is over 127 (data&0x80)
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midiBufferIndex = 0; // and check if the midi channel corresponds to the midiChannel
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midiRead = true; // the device is set to listen to.
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} else if(data & 0x80) { // Else if the byte is over 127 (but not on the device's
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midiRead = false; // midiChannel, don't read this or any following bytes.
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}
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if(midiRead) {
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midiBuffer[midiBufferIndex] = data;
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midiBufferIndex++;
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if (midiBufferIndex > 2) {
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midiHandler();
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}
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}
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}
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}
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void MMidi::midiHandler() {
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uint8_t midiChannel = (midiBuffer[0] & 0x0F);
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switch(midiBuffer[0] & 0xF0) { // bit mask with &0xF0 ?
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case 0x80:
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noteOff (midiBuffer[0] & 0x0F, // midi channel 0-16
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midiBuffer[1] & 0x7F, // note value 0-127
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midiBuffer[2] & 0x7F); // note velocity 0-127
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break;
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case 0x90:
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noteOn (midiBuffer[0] & 0x0F, // midi channel 0-16
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midiBuffer[1] & 0x7F, // note value 0-127
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midiBuffer[2] & 0x7F); // note velocity 0-127
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break;
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case 0xA0:
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aftertouch (midiBuffer[0] & 0x0F, // midi channel 0-16
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midiBuffer[1] & 0x7F, // note value 0-127
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midiBuffer[2] & 0x7F);// note velocity 0-127
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break;
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case 0xB0:
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controller (midiBuffer[0] & 0x0F, // midi channel 0-16
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midiBuffer[1] & 0x7F, // controller number 0-127
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midiBuffer[2] & 0x7F);// controller value 0-127
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break;
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||||
|
||||
case 0xC0:
|
||||
programChange (midiBuffer[0] & 0x0F, // midi channel 0-16
|
||||
midiBuffer[1] & 0x7F); // program number 0-127
|
||||
break;
|
||||
|
||||
case 0xD0:
|
||||
channelPressure (midiBuffer[0] & 0x0F, // midi channel 0-16
|
||||
midiBuffer[1] & 0x7F); // pressure amount 0-127
|
||||
break;
|
||||
|
||||
case 0xE0:
|
||||
pitchWheel (midiBuffer[0] & 0x0F, // midi channel 0-16
|
||||
midiBuffer[1] & 0x7F, // higher bits 0-6
|
||||
midiBuffer[2] & 0x7F);// lower bits 7-13
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void MMidi::noteOff(uint8_t channel, uint8_t note, uint8_t vel) {
|
||||
|
||||
if(notePlayed == note) {
|
||||
Music.setEnvStage(4);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void MMidi::noteOn(uint8_t channel, uint8_t note, uint8_t vel) {
|
||||
|
||||
Music.setEnvStage(1);
|
||||
Music.setVelSustain(vel);
|
||||
Music.setVelPeak(vel);
|
||||
notePlayed = note;
|
||||
memcpy_P(&frequency, &hertzTable[notePlayed],2);
|
||||
Music.setFrequency1(frequency);
|
||||
Music.setFrequency2(frequency);
|
||||
Music.setFrequency3(frequency);
|
||||
}
|
||||
|
||||
|
||||
void MMidi::aftertouch(uint8_t channel, uint8_t note, uint8_t pressure) {
|
||||
// Write code here for Aftertouch
|
||||
}
|
||||
|
||||
|
||||
void MMidi::controller(uint8_t channel, uint8_t number, uint8_t value) {
|
||||
|
||||
switch(number) {
|
||||
case DETUNE:
|
||||
Music.setDetune(value/5120.0);
|
||||
break;
|
||||
case PORTAMENTO:
|
||||
//Music.setPortamento(value); // function to be defined, also argument
|
||||
break;
|
||||
case DETUNE1:
|
||||
Music.setDetune1(value/5120.0);
|
||||
break;
|
||||
case DETUNE2:
|
||||
Music.setDetune2(value/5120.0);
|
||||
break;
|
||||
case DETUNE3:
|
||||
Music.setDetune3(value/5120.0);
|
||||
break;
|
||||
case SEMITONE1:
|
||||
if(15 < value && value < 113) {
|
||||
int8_t val = (((value-16)/2)-24);
|
||||
Music.setSemitone1(val);
|
||||
} else if (value < 16) {
|
||||
Music.setSemitone1(-24);
|
||||
} else {
|
||||
Music.setSemitone1(24);
|
||||
}
|
||||
break;
|
||||
case SEMITONE2:
|
||||
if(15 < value && value < 113) {
|
||||
int8_t val = (((value-16)/2)-24);
|
||||
Music.setSemitone2(val);
|
||||
} else if (value < 16) {
|
||||
Music.setSemitone2(-24);
|
||||
} else {
|
||||
Music.setSemitone2(24);
|
||||
}
|
||||
break;
|
||||
case SEMITONE3:
|
||||
if(15 < value && value < 113) {
|
||||
int8_t val = (((value-16)/2)-24);
|
||||
Music.setSemitone3(val);
|
||||
} else if (value < 16) {
|
||||
Music.setSemitone3(-24);
|
||||
} else {
|
||||
Music.setSemitone3(24);
|
||||
}
|
||||
break;
|
||||
case GAIN1:
|
||||
Music.setGain1(value / 127.0);
|
||||
break;
|
||||
case GAIN2:
|
||||
Music.setGain2(value / 127.0);
|
||||
break;
|
||||
case GAIN3:
|
||||
Music.setGain3(value / 127.0);
|
||||
break;
|
||||
case WAVEFORM:
|
||||
Music.setWaveform(value / 8);
|
||||
break;
|
||||
case WAVEFORM1:
|
||||
Music.setWaveform1(value / 8);
|
||||
break;
|
||||
case WAVEFORM2:
|
||||
Music.setWaveform2(value / 8);
|
||||
break;
|
||||
case WAVEFORM3:
|
||||
Music.setWaveform3(value / 8);
|
||||
break;
|
||||
case ENV_ATTACK:
|
||||
Music.setAttack(value);
|
||||
break;
|
||||
case ENV_DECAY:
|
||||
Music.setDecay(value);
|
||||
break;
|
||||
case ENV_SUSTAIN:
|
||||
Music.setSustain(value);
|
||||
break;
|
||||
case ENV_RELEASE:
|
||||
Music.setRelease(value);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void MMidi::programChange(uint8_t channel, uint8_t number) {
|
||||
// Write code here for Program Change
|
||||
}
|
||||
|
||||
|
||||
void MMidi::channelPressure(uint8_t channel, uint8_t pressure) {
|
||||
// Write code here for Channel Pressure
|
||||
}
|
||||
|
||||
|
||||
void MMidi::pitchWheel(uint8_t channel, uint8_t highBits, uint8_t lowBits) {
|
||||
// Write code here for Pitch Wheel
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
#endif // close guard Music_h
|
||||
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user