uilleann/pipe.cpp

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#include "pipe.h"
#include "fingering.h"
#include "tuning.h"
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#define CLOSEDVAL 0x30
#define OPENVAL 0x70
#define GLISSANDO_STEPS (OPENVAL - CLOSEDVAL)
Pipe::Pipe() {
keysLast = 0;
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}
bool Pipe::Init() {
// Capacative touch sensor
if (!capSensor.begin(0x5A)) {
return false;
}
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// Proximity sensor
if (paj7620Init()) {
return false;
}
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// Bag button
bagSensor.begin();
// This library takes the entire program out if you poll it 5-40 times without anything connected
bag_enabled = bagSensor.isConnected();
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return true;
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}
void Pipe::Update() {
uint8_t glissandoKeys = 0;
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keysLast = keys;
keys = 0;
// Read the bag state, if there's a bag.
// if there isn't a bag, don't try, or this library will crash the program.
if (bag_enabled) {
bag = bagSensor.isPressed();
} else {
bag = false;
}
// 0x6c is actually 8 bytes, but all 8 are always the same...
paj7620ReadReg(0x6c, 1, &kneeClosedness);
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for (int i = 0; i < NUM_KEYS; i++) {
uint16_t val = max(capSensor.filteredData(i), CLOSEDVAL);
float openness = ((val - CLOSEDVAL) / float(GLISSANDO_STEPS));
// keys = all keys which are at least touched
// glissandoKeys = all keys which are fully closed
// The glissando operation computes the difference.
if (openness < 1.0) {
glissandoOpenness = max(glissandoOpenness, openness);
bitSet(keys, i);
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}
if (openness == 0.0) {
bitSet(glissandoKeys, i);
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}
}
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// Look up notes in the big table
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struct Fingering f = FingeredNote(keys);
struct Fingering gf = FingeredNote(glissandoKeys);
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note = f.note;
glissandoNote = gf.note;
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// Was the high bit set? That indicates "alternate fingering", which sounds different.
altFingering = f.alt;
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// If the bag is squished, jump up an octave
// But only if the left thumb is down!
if (bag && (keys & bit(7))) {
note += NOTE_OCTAVE;
glissandoNote += NOTE_OCTAVE;
}
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// All keys closed + knee = no sound
silent = ((kneeClosedness > 240) && (keys == 0xff));
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}
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bool Pipe::Pressed(uint8_t key) {
return bitRead(keys, key);
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}
bool Pipe::JustPressed(uint8_t key) {
if (bitRead(keys, key)) {
return !bitRead(keysLast, key);
}
return false;
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}
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bool Pipe::typematicEvent(uint8_t key, uint16_t delay, uint16_t repeat) {
if (Pressed(key)) {
unsigned long now = millis();
if (JustPressed(key)) {
nextRepeat[key] = now + max(delay, repeat);
return true;
}
if (now >= nextRepeat[key]) {
nextRepeat[key] = now + repeat;
return true;
}
}
return false;
}
Adjust Pipe::ReadAdjust(uint8_t keyUp, uint8_t keyDown, uint16_t delay, uint16_t repeat) {
bool eventUp = typematicEvent(keyUp, delay, repeat);
bool eventDown = typematicEvent(keyDown, delay, repeat);
if (Pressed(keyUp) && Pressed(keyDown)) {
unsigned long nr = max(nextRepeat[keyUp], nextRepeat[keyDown]);
nextRepeat[keyUp] = nr;
nextRepeat[keyDown] = nr;
}
if (eventUp && eventDown) {
return ADJUST_BOTH;
} else if (eventUp) {
return ADJUST_UP;
} else if (eventDown) {
return ADJUST_DOWN;
}
return ADJUST_NONE;
}