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Now keyboard waits for MIDI clock and plays 2 notes per beat when in arpeggiator

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əlemi 2019-03-09 19:14:18 +01:00
parent 96a4142c0f
commit 5bd20dab8c
1 changed files with 54 additions and 37 deletions
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41
cvkeyboard.ino
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@ -15,7 +15,7 @@ typedef struct OctaveStatus { // This struct is for an octave status. Each boo
} octst; } octst;
// PIN DECLARATIONS // PIN DECLARATIONS
int note[12] = { // Pins used to read each note (C is 0, B is 11) int note[12] = { // Pins used to read each note (C is 0, B is 11)
22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44 }; 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44 };
int octave[4] = { // Pins associated to each octave's contact bar int octave[4] = { // Pins associated to each octave's contact bar
@ -25,7 +25,7 @@ int sendPin[3] = { // Pins used as sender for capacitive touch buttons
int receivePin[3] = { // Pins used as receiver for capacitive touch buttons int receivePin[3] = { // Pins used as receiver for capacitive touch buttons
6, 3, 17 }; 6, 3, 17 };
// GLOBAL SETTINGS // GLOBAL SETTINGS
bool raw; // Signal is sent when key is detected bool raw; // Signal is sent when key is detected
// PLACEHOLDERS // PLACEHOLDERS
@ -36,7 +36,10 @@ unsigned long gate = 50; // ms of keypress if arpeggiator
unsigned long nextBeat = 0; // Used to keep track of beats. Useless if receiving MIDI clock. unsigned long nextBeat = 0; // Used to keep track of beats. Useless if receiving MIDI clock.
// SYSTEM VARIABLES // SYSTEM VARIABLES
int clock = 0; // Used if arp to cycle through notes int arp = 0; // Keeps track of last played note if arpeggiating
int midiclock = 0; // Used to sync with MIDI clock
int semA = 0; // Basic semaphore implementation with global counter
int semB = 0;
int npressed; // Number of keys pressed, used to avoid doing anything when no keys are pressed int npressed; // Number of keys pressed, used to avoid doing anything when no keys are pressed
bool kboard[49]; // Last status of keyboard bool kboard[49]; // Last status of keyboard
bool bCapStat[3]; // Last status of Capacitive Buttons bool bCapStat[3]; // Last status of Capacitive Buttons
@ -66,10 +69,11 @@ void setup() {
} }
void loop() { void loop() {
sync();
for (int cButton = 0; cButton < 3; cButton++) { for (int cButton = 0; cButton < 3; cButton++) {
bCapStat[cButton] = evalButton(bCap[cButton], bCapStat[cButton], DRUMNOTE + cButton); bCapStat[cButton] = evalButton(bCap[cButton], bCapStat[cButton], DRUMNOTE + cButton);
} }
npressed = 0; npressed = 0;
raw = digitalRead(2); raw = digitalRead(2);
for (int cOctave = 0; cOctave < 4; cOctave++) { for (int cOctave = 0; cOctave < 4; cOctave++) {
@ -79,15 +83,19 @@ void loop() {
} }
if (raw) return; if (raw) return;
if (npressed < 1) return; if (npressed < 1) return;
if (Serial.read() == MIDICLOCK) {
clock++; if (semA > 0) {
while (kboard[clock] == LOW) { semA--;
clock++; arp++;
if (clock == 49) clock = 0; while (kboard[arp] == LOW) {
arp++;
if (arp == 49) arp = 0;
} }
playNote(clock, HIGH); playNote(arp, HIGH);
delay(gate); }
playNote(clock, LOW); if (semB > 0) {
semB--;
playNote(arp, LOW);
} }
} }
@ -146,3 +154,12 @@ bool evalButton(CapacitiveSensor* b, bool value, byte note) {
} }
} }
} }
void sync() {
if (Serial.available() && Serial.read() == MIDICLOCK) {
midiclock++;
if (midiclock == 11 && semA == 0) semA++;
else if (midiclock == 5 && semB == 0) semB++;
else if (midiclock == 12) midiclock = 0;
}
}