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PAM.cpp
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PAM.cpp
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//
// PAM.cpp
//
//
// Created by Rayce Stipanovich on 3/21/13.
//
//
#include "PAM.h"
#include <MIDI.h>
const int latchPin = 4;
const int clockPin = 3;
const int dataPin = 2;
const int debugPin = 14;
byte debug_state = 0;
long int debug_led_time = 0;
//software defines
PlaybackMode globalMode = basicMode;
#define TAN_START 1
#define TAN_END 16
#define PICK_PIN1 17
#define PICK_PIN2 18
#define DAMP_SOL 19
#define BLINK_TIME 500
#define pluck_sol_hold_duration 700
#define MAX_PLUCK_SPEED 30
#define EXTRA_SOL 24
long int debug_blink_time = 0;
bool debug_blink_state = false;
bool pluck_direction = false;
long int pluck_kill_timer = 0;
bool SOLENOID_STATES[24];
bool _prev_SOLENOID_STATES[24];
int TANGENT_PITCH_MAP[36];
bool super_pluck = false;
int Pluck_rate = MAX_PLUCK_SPEED + 2*127;
bool is_plucking = false;
long int last_pluck = 0;
bool basic_auto_pluck = false;
#define C4 0
#define Db4 1
#define D4 2
#define Eb4 3
#define E4 4
#define F4 5
#define Gb4 6
#define G4 7
#define Ab4 8
#define A4 9
#define Bb4 10
#define B4 11
#define C5 12
#define Db5 13
#define D5 14
#define Eb5 15
#define E5 16
#define F5 17
#define Gb5 18
#define G5 19
#define Ab5 20
#define A5 21
#define Bb5 22
#define B5 23
#define C6 24
#define Db6 25
#define D6 26
#define Eb6 27
#define E6 28
#define F6 29
#define Gb6 30
#define G6 31
#define Ab6 32
#define A6 33
#define Bb6 34
#define B6 35
void debug_led() {
if (globalMode==basicMode) {
if (debug_led_time <= millis()) {
if (debug_state == 0) {
debug_led_time = millis() + 30;
if (!debug_blink_state) digitalWrite(debugPin, HIGH);
debug_state = 1;
} else if (debug_state == 1) {
debug_led_time = millis() + 70;
if (!debug_blink_state) digitalWrite(debugPin, LOW);
debug_state = 2;
} else if (debug_state == 2) {
debug_led_time = millis() + 30;
if (!debug_blink_state) digitalWrite(debugPin, HIGH);
debug_state = 3;
} else if (debug_state == 3) {
debug_led_time = millis() + 510;
if (!debug_blink_state) digitalWrite(debugPin, LOW);
debug_state = 0;
}
}
} else {
if (debug_led_time <= millis()) {
if (debug_state == 0) {
debug_led_time = millis() + 50;
if (!debug_blink_state) digitalWrite(debugPin, HIGH);
debug_state = 1;
} else if (debug_state == 1) {
debug_led_time = millis() + 50;
if (!debug_blink_state) digitalWrite(debugPin, LOW);
debug_state = 2;
} else if (debug_state == 2) {
debug_led_time = millis() + 50;
if (!debug_blink_state) digitalWrite(debugPin, HIGH);
debug_state = 3;
} else if (debug_state == 3) {
debug_led_time = millis() + 50;
if (!debug_blink_state) digitalWrite(debugPin, LOW);
debug_state = 0;
}
}
}
if (debug_blink_state) {
if (millis() >= debug_blink_time) {
debug_blink_state = false;
digitalWrite(debugPin, LOW);
}
}
}
void KillAllTangents() {
int i;
for (i=TAN_START; i<TAN_END; i++) {
SOLENOID_STATES[ i - 1 ] = false;
}
}
void triggerSolenoid(short int ProcessedNote) {
byte solenoidNumber = TANGENT_PITCH_MAP[ ProcessedNote ];
SOLENOID_STATES[solenoidNumber - 1] = true;
}
void killSolenoid(short int ProcessedNote) {
byte solenoidNumber = TANGENT_PITCH_MAP[ ProcessedNote ];
SOLENOID_STATES[solenoidNumber - 1] = false;
}
void _handler_MIDI_Note_On(byte channel, byte note, byte velocity) {
blink();
if (globalMode == basicMode) {
if (note != 72) KillAllTangents();
note = note - 72;
triggerSolenoid(constrain(note, G4, G4 + 16));
if (basic_auto_pluck) pluck();
else if (note == 0) pluck();
} else {
//individual plucking
if (note == 72) {
if (super_pluck) {
last_pluck = millis() + Pluck_rate;
is_plucking = true;
}
pluck();
} else {
//individual solenoid control
note = note - 72;
note = constrain(note, G4, G4 + 16);
triggerSolenoid(note);
}
}
}
//timer based auto plucking
void autoPluck() {
if (super_pluck && globalMode==advanceMode && is_plucking){
if (millis() >= last_pluck) {
last_pluck = millis() + Pluck_rate;
pluck();
}
}
}
void _handler_MIDI_Note_Off(byte channel, byte note, byte velocity) {
blink();
if (note == 72) {
is_plucking = false;
//if (super_pluck && globalMode == advanceMode) pluck();
} else {
note = note - 72;
note = constrain(note, G4, G4 + 16);
killSolenoid(note);
}
}
void _handler_MIDI_Control_Change(byte channel, byte number, byte value) {
blink();
if (number == 39) {
if (value >= 64) {
globalMode = advanceMode;
} else {
globalMode = basicMode;
if (is_plucking){
is_plucking = false;
pluck();
}
}
}
if (number == 36) {
if (value >= 64) {
dampOn();
} else {
dampOff();
}
}
if (number == 37) {
if (value >= 64) {
basic_auto_pluck = true;
} else {
basic_auto_pluck = false;
}
}
if (number == 1) { //mod weel advanced mode plucking
if (value > 0 && globalMode == advanceMode ) super_pluck = true;
else super_pluck = false;
Pluck_rate = ((127-value)*4) + MAX_PLUCK_SPEED;
}
}
void dampOn() {
SOLENOID_STATES[ DAMP_SOL - 1 ] = true;
}
void dampOff() {
SOLENOID_STATES[ DAMP_SOL - 1 ] = false;
}
void pluck() {
int i;
for (i=0; i<50; i++) {
digitalWrite(MOSI, HIGH);
delayMicroseconds(1);
digitalWrite(MOSI, LOW);
delayMicroseconds(1);
}
}
void handlePluck() {
if (millis() >= pluck_kill_timer){
SOLENOID_STATES[ PICK_PIN1 - 1 ] = false;
SOLENOID_STATES[ PICK_PIN2 - 1 ] = false;
}
}
void blink() {
digitalWrite(debugPin, HIGH);
debug_blink_state = true;
debug_blink_time = millis() + BLINK_TIME;
}
void updateOutput() {
if (memcmp(_prev_SOLENOID_STATES, SOLENOID_STATES, sizeof(SOLENOID_STATES))!=0) {
memcpy(_prev_SOLENOID_STATES, SOLENOID_STATES, sizeof(SOLENOID_STATES));
byte temp_byte = 0;
if (SOLENOID_STATES[0]) temp_byte += 0x01;
if (SOLENOID_STATES[1]) temp_byte += 0x02;
if (SOLENOID_STATES[2]) temp_byte += 0x04;
if (SOLENOID_STATES[3]) temp_byte += 0x08;
if (SOLENOID_STATES[4]) temp_byte += 0x10;
if (SOLENOID_STATES[5]) temp_byte += 0x20;
if (SOLENOID_STATES[6]) temp_byte += 0x40;
if (SOLENOID_STATES[7]) temp_byte += 0x80;
byte temp_byte2 = 0;
if (SOLENOID_STATES[8]) temp_byte2 += 0x01;
if (SOLENOID_STATES[9]) temp_byte2 += 0x02;
if (SOLENOID_STATES[10]) temp_byte2 += 0x04;
if (SOLENOID_STATES[11]) temp_byte2 += 0x08;
if (SOLENOID_STATES[12]) temp_byte2 += 0x10;
if (SOLENOID_STATES[13]) temp_byte2 += 0x20;
if (SOLENOID_STATES[14]) temp_byte2 += 0x40;
if (SOLENOID_STATES[15]) temp_byte2 += 0x80;
byte temp_byte3 = 0;
if (SOLENOID_STATES[16]) temp_byte3 += 0x01;
if (SOLENOID_STATES[17]) temp_byte3 += 0x02;
if (SOLENOID_STATES[18]) temp_byte3 += 0x04;
if (SOLENOID_STATES[19]) temp_byte3 += 0x08;
if (SOLENOID_STATES[20]) temp_byte3 += 0x10;
if (SOLENOID_STATES[21]) temp_byte3 += 0x20;
if (SOLENOID_STATES[22]) temp_byte3 += 0x40;
if (SOLENOID_STATES[23]) temp_byte3 += 0x80;
digitalWrite(latchPin, LOW);
shiftOut(dataPin, clockPin, MSBFIRST, temp_byte3);
shiftOut(dataPin, clockPin, LSBFIRST, temp_byte2);
shiftOut(dataPin, clockPin, MSBFIRST, temp_byte);
digitalWrite(latchPin, HIGH);
}
}
void setup() {
// [MIDI_PITCH] = SOLENOID NUMBER
TANGENT_PITCH_MAP[G4] = EXTRA_SOL;//reserved for open
TANGENT_PITCH_MAP[Ab4] = 16;
TANGENT_PITCH_MAP[A4] = 15;
TANGENT_PITCH_MAP[Bb4] = 14;
TANGENT_PITCH_MAP[B4] = 13;
TANGENT_PITCH_MAP[C5] = 12;
TANGENT_PITCH_MAP[Db5] = 11;
TANGENT_PITCH_MAP[D5] = 10;
TANGENT_PITCH_MAP[Eb5] = 9;
TANGENT_PITCH_MAP[E5] = 8;
TANGENT_PITCH_MAP[F5] = 7;
TANGENT_PITCH_MAP[Gb5] = 6;
TANGENT_PITCH_MAP[G5] = 5;
TANGENT_PITCH_MAP[Ab5] = 4;
TANGENT_PITCH_MAP[A5] = 3;
TANGENT_PITCH_MAP[Bb5] = 2;
TANGENT_PITCH_MAP[B5] = 1;
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);
pinMode(debugPin, OUTPUT);
pinMode(MOSI, OUTPUT);
digitalWrite(MOSI, LOW);
//handle initialization of shift registers
digitalWrite(latchPin, LOW);
delay(1);
shiftOut(dataPin, clockPin, MSBFIRST, 0);
shiftOut(dataPin, clockPin, MSBFIRST, 0);
shiftOut(dataPin, clockPin, MSBFIRST, 0);
delay(1);
digitalWrite(latchPin, HIGH);
MIDI.begin(1);
MIDI.setHandleNoteOn(_handler_MIDI_Note_On);
MIDI.setHandleNoteOff(_handler_MIDI_Note_Off);
MIDI.setHandleControlChange(_handler_MIDI_Control_Change);
//fun blinky blinky
int i;
for (i=0; i<10; i++) {
digitalWrite(14, HIGH);
delay(30);
digitalWrite(14, LOW);
delay(30);
}
//startup delay for debugging
delay(200);
}
void loop() {
MIDI.read();
debug_led();
handlePluck();
updateOutput();
autoPluck();
}