mirror of
https://git.alemi.dev/cv-keyboard.git
synced 2024-11-23 17:04:49 +01:00
Initial channel implementation
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parent
68d2631f33
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1 changed files with 129 additions and 74 deletions
203
cvkeyboard.ino
203
cvkeyboard.ino
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@ -5,6 +5,7 @@
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#define BPQN 24 // Ableton sends 24, VCV rack only one, by standard should be 24?
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#define NOTEOffset 36
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#define DRUMSHIFT 6
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#define drumOffset 60
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#define MINUTE 60000
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#define MIDICLOCK 0xf8
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@ -22,6 +23,7 @@ typedef struct OCTAVEStatus { // This struct is for an OCTAVE status. Each
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} octst;
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typedef struct SequencerStep {
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bool clean = LOW;
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bool kboard_s[MAXKEYS];
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bool dpad_s[MAXDPAD];
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unsigned short stepnumber;
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@ -36,7 +38,7 @@ int OCTAVE[4] = { // Pins associated to each OCTAVE's contact bar
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int SEND[3] = { // Pins used as sender for capacitive touch buttons
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5, 4, 16 };
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int RECEIVE[3] = { // Pins used as receiver for capacitive touch buttons
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6, 3, 17 };
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6, 1, 17 };
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int LEDS[4] = { // Pins used for leds
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21, 20, 19, 18 };
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int OW = 2; // Pin used for overwrite switch
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@ -48,23 +50,27 @@ int ADD = 14; // Pin used for add button
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// PLACEHOLDERS
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byte velocity = 100; //
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byte channel = 1; //
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int bpm = 360; //
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// SEQUENCER POINTERS
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link head = NULL;
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link current = NULL;
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// SEQUENCER POINTERS AND RELATED ARRAYS
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link head[6];
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link current[6];
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link previous;
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unsigned short nstep[6]; // Keeps track of the sequencer steps
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bool mute[6];
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byte channel; // Current selected channel. Drums are shifted of DRUMSHIFT channels (so channels can only be 6)
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// SYSTEM VARIABLES
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unsigned short nstep = 0; // Keeps track of the sequencer steps
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int arp = 0; // Keeps track of last played NOTE if arpeggiating
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int midiclock = 0; // Used to sync with MIDI clock
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bool add_step = LOW; // This is used to remember the addition of a step
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bool del_step = LOW; // This is used to remember the deletion of a step
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bool chan_up = LOW; // Only for now because I have few buttons :C
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int sem_beat = 0; // Basic semaphore used to sync with MIDI beat
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int sem_gate = 0; // Basic semaphore used for gate timing
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unsigned long last_gate = 0; // Gate start time for last sequencer step
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unsigned long gate_length = 500; // ms of keypress if arpeggiator
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unsigned long gate_length = 100; // ms of keypress if arpeggiator
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bool dpadhit = LOW; // If any drum pad has been hit in this cycle, this is true
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int npressed; // Number of keys pressed, used to avoid doing anything when no keys are pressed
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bool kboard[MAXKEYS]; // Last status of keyboard
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@ -79,7 +85,7 @@ void setup() {
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for (int cButton = 0; cButton < MAXDPAD; cButton++) { // Capacitive Buttons configuration
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bCap[cButton] = new CapacitiveSensor(SEND[cButton], RECEIVE[cButton]); // Initialized
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bCap[cButton]->set_CS_AutocaL_Millis(0xFFFFFFFF); // No recalibration
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bCap[cButton]->set_CS_Timeout_Millis(10); // Timeout set to 20ms (instead of 2s)
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bCap[cButton]->set_CS_Timeout_Millis(1); // Timeout set to 20ms (instead of 2s)
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dpad[cButton] = LOW; // Button starts LOW
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}
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@ -91,60 +97,86 @@ void setup() {
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pinMode(OW, INPUT_PULLUP); // Used for overwrite switch
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pinMode(ADD, INPUT_PULLUP); // Used for overwrite switch
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for (int i = 0, i < 6, i++){
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current[i] = NULL;
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head[i] = NULL;
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nstep[i] = 0;
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mute[i] = LOW;
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}
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channel = 1;
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for (int i = 0; i < 16; i++) { // Boot up fancyness!
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display(i);
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delay(200);
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}
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display(nstep);
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// ONLY FOR DEBUG
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for (int i=0; i<16, i++){
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for (byte chan=1; chan <= 6; chan++) insertStep(chan);
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}
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display(0);
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}
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void loop() {
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// Serial.println(midiclock);
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// Serial.print("Start | ");
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// Serial.print(millis());
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// Serial.print('\n');
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sync();
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add_step = (add_step || !digitalRead(ADD));
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// Serial.print("SPEPS DONE | ");
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// Serial.print(millis());
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// Serial.print('\n');
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// add_step = (add_step || !digitalRead(ADD));
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// del_step = (del_step || !digitalRead(DEL));
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chan_up = (chan_up || !digitalRead(ADD))
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if (sem_beat > 0) {
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sem_beat--;
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if (sem_gate > 0) { // If step was shorter than gate, close all open notes before next step
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sem_gate--;
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for (int i = 0; i < MAXKEYS; i++) if (current->kboard_s[i]) playNOTE(i, !current->kboard_s[i]);
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for (int i = 0; i < MAXDPAD; i++) if (current->dpad_s[i]) playDrum(i, !current->dpad_s[i]);
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for (byte chan = 1; chan <= 6; chan++) {
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if (mute[chan]) continue;
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for (int i = 0; i < MAXKEYS; i++) if (current[chan]->kboard_s[i] && !kboard[i]) playNote(i, !current[chan]->kboard_s[i], chan);
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for (int i = 0; i < MAXDPAD; i++) if (current[chan]->dpad_s[i] && !dpad[i]) playDrum(i, !current[chan]->dpad_s[i], chan);
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}
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}
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if (add_step) {
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if (add_step && !del_step) {
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add_step = LOW;
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if (nstep < MAXSTEP) insertStep();
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if (nstep[channel-1] < MAXSTEP) insertStep(channel-1);
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}
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if (del_step && !add_step) {
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del_step = LOW;
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if (nstep[channel-1] < MAXSTEP) deleteStep(channel-1);
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}
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if (add_step && del_step) {
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add_step = LOW;
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del_step = LOW;
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}
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// ONLY FOR NOW because I don't have enough buttons :C
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if (chan_up) {
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chan_up = LOW;
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channel++;
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if (channel > 6) channel = (byte) 1;
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}
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//if (digitalRead(ADD) && !digitalRead(OW)) deleteStep(); // Placeholder because I miss a button
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nextStep();
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display(current->stepnumber);
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if (current != NULL) { // Play all step notes and begin counting for gate
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for (int i = 0; i < MAXKEYS; i++) if (current->kboard_s[i]) playNOTE(i, current->kboard_s[i]);
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for (int i = 0; i < MAXDPAD; i++) if (current->dpad_s[i]) playDrum(i, current->dpad_s[i]);
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last_gate = millis();
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sem_gate++;
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display(current[channel-1]->stepnumber);
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for (byte chan = 1; chan <= 6; chan++) {
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if (mute[chan]) continue;
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if (current[chan] != NULL) { // Play all step notes and begin counting for gate
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for (int i = 0; i < MAXKEYS; i++) if (current[chan]->kboard_s[i] && !kboard[i]) playNote(i, current[chan]->kboard_s[i]);
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for (int i = 0; i < MAXDPAD; i++) if (current[chan]->dpad_s[i] && !dpad[i]) playDrum(i, current[chan]->dpad_s[i]);
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}
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}
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// Serial.print("BEAT ELABORATED AND PLAYED | ");
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// Serial.print(millis());
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// Serial.print('\n');
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last_gate = millis();
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sem_gate++;
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}
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if (sem_gate > 0 && (millis() - last_gate) > gate_length) {
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sem_gate--;
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for (int i = 0; i < MAXKEYS; i++) if (current->kboard_s[i]) playNOTE(i, !current->kboard_s[i]);
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for (int i = 0; i < MAXDPAD; i++) if (current->dpad_s[i]) playDrum(i, !current->dpad_s[i]);
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// Serial.print("GATE FINISHED | ");
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// Serial.print(millis());
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// Serial.print('\n');
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for (byte chan = 1; chan <= 6; chan++) {
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if (mute[chan]) continue;
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for (int i = 0; i < MAXKEYS; i++) if (current[chan]->kboard_s[i] && !kboard[i]) playNote(i, !current[chan]->kboard_s[i], chan);
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for (int i = 0; i < MAXDPAD; i++) if (current[chan]->dpad_s[i] && !dpad[i]) playDrum(i, !current[chan]->dpad_s[i], chan);
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}
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}
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dpadhit = LOW;
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@ -159,16 +191,11 @@ void loop() {
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npressed += eval(scan(cOCTAVE));
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digitalWrite(OCTAVE[cOCTAVE], LOW);
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}
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// Serial.print("READ KEYBOARD | ");
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// Serial.print(millis());
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// Serial.print('\n');
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if (digitalRead(OW)) {
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if (npressed > 0) for (int i = 0; i < MAXKEYS; i++) current->kboard_s[i] = kboard[i];
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if (dpadhit) for (int i = 0; i < MAXDPAD; i++) current->dpad_s[i] = dpad[i];
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// Serial.print("OVERWRITTEN STUFF | ");
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// Serial.print(millis());
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// Serial.print('\n');
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if (npressed > 0) for (int i = 0; i < MAXKEYS; i++) current[channel-1]->kboard_s[i] = kboard[i];
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if (dpadhit) for (int i = 0; i < MAXDPAD; i++) current[channel-1]->dpad_s[i] = dpad[i];
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current[channel-1]->clean = LOW;
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}
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}
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@ -200,14 +227,14 @@ bool evalButton(CapacitiveSensor* b, bool value, int note_number) {
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if (sensor > 15) {
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if (value) return HIGH;
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else {
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playDrum(note_number, HIGH);
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playDrum(note_number, HIGH, channel);
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return HIGH;
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}
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}
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else {
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if (!value) return LOW;
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else {
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playDrum(note_number, LOW);
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playDrum(note_number, LOW, channel);
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return LOW;
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}
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}
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@ -221,7 +248,7 @@ int eval(octst input) {
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for (int c = 0; c < 12; c++) {
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if (input.stat[c] ^ kboard[c + sNOTE]) {
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playNOTE(c + sNOTE, input.stat[c]);
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playNote(c + sNOTE, input.stat[c], channel);
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kboard[c + sNOTE] = input.stat[c];
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}
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if (kboard[c + sNOTE] == HIGH) pressed++;
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@ -229,23 +256,23 @@ int eval(octst input) {
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return pressed;
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}
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void playNOTE(int c, bool status) {
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void playNote(int c, bool status, byte chan) {
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byte n = c + NOTEOffset;
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if (status == HIGH) {
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MIDI.sendNoteOn(n, velocity, channel);
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MIDI.sendNoteOn(n, velocity, chan);
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}
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else if (status == LOW) {
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MIDI.sendNoteOff(n, velocity, channel);
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MIDI.sendNoteOff(n, velocity, chan);
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}
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}
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void playDrum(int c, bool status) {
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void playDrum(int c, bool status, byte chan) {
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byte n = c + drumOffset;
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if (status == HIGH) {
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MIDI.sendNoteOn(n, velocity, (byte)7);
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MIDI.sendNoteOn(n, velocity, (byte)(chan + DRUMSHIFT));
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}
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else if (status == LOW) {
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MIDI.sendNoteOff(n, velocity, (byte)7);
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MIDI.sendNoteOff(n, velocity, (byte)(chan + DRUMSHIFT));
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}
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}
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@ -270,7 +297,7 @@ link newStep() {
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return (link)malloc(sizeof(struct SequencerStep));
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}
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bool insertStep() {
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bool insertStep(byte chan) {
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link newS = newStep();
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link buffer;
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if (newS == NULL) {
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@ -281,42 +308,70 @@ bool insertStep() {
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for (int i = 0; i < MAXKEYS; i++) newS->kboard_s[i] = LOW;
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for (int i = 0; i < MAXDPAD; i++) newS->dpad_s[i] = LOW;
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if (current == NULL) {
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if (current[chan] == NULL) {
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newS->next = newS;
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newS->stepnumber = (unsigned short) 0;
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current = newS;
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head = newS;
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nstep = 1;
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current[chan] = newS;
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head[chan] = newS;
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nstep[chan] = 1;
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}
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else {
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newS->stepnumber = nstep;
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buffer = current;
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while (buffer->next != head) buffer = buffer->next;
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buffer = current[chan];
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while (buffer->next != head[chan]) buffer = buffer->next;
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buffer->next = newS;
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newS->next = head;
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nstep++;
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newS->next = head[chan];
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nstep[chan]++;
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}
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return HIGH;
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}
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void nextStep() {
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if (current == NULL) return;
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current = current->next;
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for (byte chan=1; chan <= 6; chan++) {
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if (current[chan] == NULL) continue;
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current[chan] = current[chan]->next;
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}
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}
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bool deleteStep() {
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if (nstep < 1) return LOW;
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bool deleteStep(byte chan) {
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if (nstep[chan] < 1) return LOW;
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if (nstep == 1) {
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if (!current[chan]->clean) {
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for (int i = 0; i < MAXKEYS; i++) current[chan]->kboard_s[i] = LOW;
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for (int i = 0; i < MAXDPAD; i++) current[chan]->dpad_s[i] = LOW;
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current[chan]->clean = HIGH;
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return LOW;
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}
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if (nstep[chan] == 1) {
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free(current);
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head = NULL;
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current = NULL;
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head[chan] = NULL;
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current[chan] = NULL;
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}
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else {
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link buffer = current->next->next;
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free(current->next);
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current->next = buffer;
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link buffer = current[chan];
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while (buffer->next != current[chan]) buffer = buffer->next;
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buffer->next = current[chan]->next;
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if (current[chan] == head[chan]) {
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head[chan] = head[chan]->next;
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int i = 0
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buffer = head[chan]
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do {
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buffer->stepnumber = i;
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buffer = buffer->next;
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i++;
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} while (buffer != head[chan])
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}
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else {
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buffer = buffer->next;
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while (buffer != head[chan]) {
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buffer->stepnumber--;
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buffer = buffer->next;
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}
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}
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free(current[chan]);
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buffer = buffer->next;
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}
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nstep--;
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nstep[chan]--;
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return HIGH;
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}
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