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Reintroduced a basic arpeggiator

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əlemi 2019-07-19 17:38:15 +02:00
parent 51f6c942f3
commit 1458cf72f0
1 changed files with 42 additions and 12 deletions
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54
cvkeyboard.ino
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@ -54,6 +54,7 @@ int NEXT = 51; // Pin used for next step switch
int DEL = 11; // Capacitive button used for DELETE button
int PLUS = 10; // Capacitive button used for PLUS button
int MINUS = 9; // Capacitive button used for MINUS button
int ARP = 7; // Capacitive button used for ARP button
// USEFUL ITERABLES
int pentathonic[10] = { // Used to quantize drum notes
@ -74,13 +75,15 @@ bool mute[6];
byte channel; // Current selected channel. Drums are shifted of DRUMSHIFT channels (so channels can only be 6)
// SYSTEM VARIABLES
int arp = 0; // Keeps track of last played NOTE if arpeggiating
int arp[2]; // arp[0] = OCTAVE, arp[1] = KEY (arp[0] for iterations, arp[1] for shifting)
int midiclock = 0; // Used to sync with MIDI clock
bool arpeggiating = LOW; // Goes HIGH if the user is requesting an arpeggio
bool plus_step = LOW; // This is used to remember the addition of a step
bool minus_step = LOW; // This is used to remember the deletion of a step
bool clear_step = LOW; // This is used to remember the clearing of a step
bool chan_up = LOW; // Only for now because I have few buttons :C
bool next_step = LOW; // Used to wait for a full switch cycle
bool overwrite = LOW;
int sem_beat = 0; // Basic semaphore used to sync with MIDI beat
int sem_gate = 0; // Basic semaphore used for gate timing
unsigned long last_gate; // Gate start time for last sequencer step
@ -116,6 +119,8 @@ void setup() {
display(loadingDisplay[3]);
for (int cOCTAVE = 0; cOCTAVE < NOCTAVES; cOCTAVE++) kboard[cOCTAVE] = 0;
dpad = 0;
arp[0] = 0;
arp[1] = 0;
cap_read = 0;
channel = (byte) 1;
display(loadingDisplay[4]);
@ -138,9 +143,11 @@ void loop() {
else if (current[channel-1] == NULL) display(analogRead(channel));
else display(current[channel-1]->stepnumber);
plus_step = plus_step || ((cap_read >> PLUS) & 1);
minus_step = minus_step || ((cap_read >> MINUS) & 1);
clear_step = clear_step || ((cap_read >> DEL) & 1);
plus_step = plus_step || (bool) ((cap_read >> PLUS) & 1);
minus_step = minus_step || (bool) ((cap_read >> MINUS) & 1);
clear_step = clear_step || (bool) ((cap_read >> DEL) & 1);
arpeggiating = (bool) ((cap_read >> ARP) & 1);
overwrite = digitalRead(OW);
if (chan_up != (bool) ((cap_read >> 8) & 1)) { // Used to increase channel with a button because I don't have a rotary switch (yet!)
chan_up = (bool) ((cap_read >> 8) & 1);
@ -155,11 +162,12 @@ void loop() {
if (sem_gate > 0) { // If step was shorter than GATE, close all open notes before next step
sem_gate--;
if (arpeggiating) playNote((arp[0]*NKEYS)+arp[1], LOW, channel);
for (int chan = 0; chan < 6; chan++) {
if (current[chan] == NULL) continue;
for (int i = 0; i < NOCTAVES; i++)
for (int j = 0; j < NKEYS; j++)
if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 != channel && ((kboard[i]>>j) & 1)))
for (int j = 0; j < NKEYS; j++) // IF note was played AND user is not playing on this channel AND this note is not kept played
if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 != channel && ((kboard[i]>>j) & 1)) && !((current[chan]->next->kboard_s[i] >> j) & 1))
playNote((i*NKEYS)+j, LOW, (byte) chan+1);
for (int i = 0; i < MAXDPAD; i++)
@ -191,6 +199,26 @@ void loop() {
nextStep(); // ALL STEPS INCREMENTED
display(current[channel-1]->stepnumber);
if (arpeggiating) {
while (npressed > 0) {
arp[1]++;
if (arp[1] == NKEYS) {
arp[1] = 0;
arp[0]++;
}
if (arp[0] == NOCTAVES) arp[0] = 0;
if ((kboard[arp[0]] >> arp[1]) & 1) {
playNote((arp[0]*NKEYS)+arp[1], HIGH, channel);
if (overwrite && current[channel-1] != NULL) {
for (int i=0; i<NOCTAVES; i++) current[channel-1]->kboard_s[i] = 0;
current[channel-1]->kboard_s[arp[0]] = current[channel-1]->kboard_s[arp[0]] | (1 << arp[1]);
}
break;
}
}
}
for (int chan = 0; chan < 6; chan++) {
if (mute[chan]) continue;
if (current[chan] != NULL) { // PLAY all step notes in all unmuted channels
@ -210,6 +238,7 @@ void loop() {
if (sem_gate > 0 && (millis() - last_gate) > gate_length) {
sem_gate--;
if (arpeggiating) playNote((arp[0]*NKEYS)+arp[1], LOW, channel);
for (int chan = 0; chan < 6; chan++) {
if (current[chan] == NULL) continue;
for (int i = 0; i < NOCTAVES; i++)
@ -238,11 +267,12 @@ void loop() {
digitalWrite(OCTAVE[cOCTAVE], LOW);
}
if (current[channel-1] != NULL && digitalRead(OW)) {
if (npressed > 0) for (int i = 0; i < NOCTAVES; i++) {
difference = kboard[i] ^ current[channel-1]->kboard_s[i];
if (difference != 0) current[channel-1]->kboard_s[i] = kboard[i];
}
if (current[channel-1] != NULL && overwrite) {
if (!arpeggiating && npressed > 0)
for (int i = 0; i < NOCTAVES; i++) {
difference = kboard[i] ^ current[channel-1]->kboard_s[i];
if (difference != 0) current[channel-1]->kboard_s[i] = kboard[i];
}
if (dpadhit) current[channel-1]->dpad_s = current[channel-1]->dpad_s | dpad; // Drum hits aren't exclusive!
}
}
@ -272,7 +302,7 @@ int eval(int input, int nOct) {
difference = kboard[nOct] ^ input;
for (int c = 0; c < 12; c++) {
if ((difference>>c) & 1) playNote(c + sNOTE, ((input>>c) & 1), channel);
if (!arpeggiating && ((difference>>c) & 1)) playNote(c + sNOTE, ((input>>c) & 1), channel);
if (((input>>c) & 1)) pressed++;
}
if (difference != 0) kboard[nOct] = input;