mirror of
https://git.alemi.dev/cv-keyboard.git
synced 2024-09-19 18:34:07 +02:00
Storage required for sequences has been dramatically reduced. Introduced auto save and load (every 15 mins)
This commit is contained in:
parent
66fe2591af
commit
51f6c942f3
1 changed files with 195 additions and 80 deletions
275
cvkeyboard.ino
275
cvkeyboard.ino
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@ -1,6 +1,7 @@
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#include <MIDI.h>
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#include <HID.h>
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#include <Wire.h>
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#include <EEPROM.h>
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#include <Adafruit_MPR121.h>
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#define BPQN 24 // Ableton sends 24, VCV rack only one, by standard should be 24?
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@ -8,35 +9,43 @@
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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 INTERVAL 15 // How many minutes between autosave
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#define MIDICLOCK 0xf8
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#define MAXKEYS 48
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#define MAXDPAD 7
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#define MAXSTEP 64
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#define MAXCHANNEL 6
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#define NKEYS 12
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#define NOCTAVES 4
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#define NBITS 6
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#define DEBOUNCE 100
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MIDI_CREATE_DEFAULT_INSTANCE();
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typedef struct SequencerStep* link;
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typedef struct OCTAVEStatus { // This struct is for an OCTAVE status. Each bool is for 1 NOTE
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bool stat[12];
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int nOct;
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} octst;
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typedef struct SavePoint {
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int headAddr[MAXCHANNEL];
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int tailAddr[MAXCHANNEL];
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} save_p;
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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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int kboard_s[4];
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int dpad_s;
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unsigned short stepnumber;
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link next;
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} step;
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save_p saveH;
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// PIN DECLARATIONS
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int NOTE[12] = { // Pins used to read each note (C is 0, B is 11)
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int NOTE[NKEYS] = { // Pins used to read each note (C is 0, B is 11)
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22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44 };
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int OCTAVE[4] = { // Pins associated to each OCTAVE's contact bar
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int OCTAVE[NOCTAVES] = { // Pins associated to each OCTAVE's contact bar
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12, 9, 8, 10 };
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int LEDS[NBITS] = { // Pins used for leds
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5, 4, 2, 14, 16, 18 };
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@ -46,9 +55,11 @@ int DEL = 11; // Capacitive button used for DELETE button
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int PLUS = 10; // Capacitive button used for PLUS button
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int MINUS = 9; // Capacitive button used for MINUS button
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// GLOBAL SETTINGS
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// USEFUL ITERABLES
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int pentathonic[10] = { // Used to quantize drum notes
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0, 2, 5, 7, 9, 12, 14, 17, 19, 21 };
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int loadingDisplay[6] = {
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1, 3, 7, 15, 31, 63};
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// PLACEHOLDERS
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byte velocity = 100; //
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@ -72,41 +83,48 @@ bool chan_up = LOW; // Only for now because I have few buttons :C
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bool next_step = LOW; // Used to wait for a full switch cycle
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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 = 1000; // ms of keypress if arpeggiator
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unsigned long last_next = 0;
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unsigned long last_gate; // Gate start time for last sequencer step
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unsigned long last_next;
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unsigned long last_save;
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unsigned long gate_length = 200; // 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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bool dpad[MAXDPAD]; // Last status of Capacitive Buttons
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int cap_read = 0;
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int npressed; // Number of keys pressed, used to avoid doing anything when no keys are pressed
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int kboard[4]; // Last status of keyboard
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int dpad; // Last status of Capacitive Buttons
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int cap_read;
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int difference = 0; // Used in many places, might as well be a global variable
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Adafruit_MPR121 cap = Adafruit_MPR121();
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void setup() {
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for (int cOCTAVE = 0; cOCTAVE < 4; cOCTAVE++) pinMode(OCTAVE[cOCTAVE], OUTPUT);
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for (int cNOTE = 0; cNOTE < 12; cNOTE++) pinMode(NOTE[cNOTE], INPUT);
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display(loadingDisplay[0]);
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for (int cOCTAVE = 0; cOCTAVE < NOCTAVES; cOCTAVE++) pinMode(OCTAVE[cOCTAVE], OUTPUT);
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for (int cNOTE = 0; cNOTE < NKEYS; cNOTE++) pinMode(NOTE[cNOTE], INPUT);
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for (int cLED = 0; cLED < NBITS; cLED++) pinMode(LEDS[cLED], OUTPUT);
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while (!cap.begin(0x5A)) delay(10); // If MPR121 is not ready, wait for it
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for (int cStat = 0; cStat < MAXKEYS; cStat++) kboard[cStat] = LOW; // All keyboard keys start LOW
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pinMode(OW, INPUT_PULLUP); // Used for overwrite switch
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pinMode(NEXT, INPUT_PULLUP);
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display(loadingDisplay[1]);
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MIDI.begin(MIDI_CHANNEL_OFF);
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Serial.begin(115200); // Uncomment this if you use Hairless and set baud rate
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pinMode(OW, INPUT_PULLUP); // Used for overwrite switch
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pinMode(NEXT, INPUT_PULLUP); // Used for overwrite switch
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display(loadingDisplay[2]);
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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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display(loadingDisplay[3]);
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for (int cOCTAVE = 0; cOCTAVE < NOCTAVES; cOCTAVE++) kboard[cOCTAVE] = 0;
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dpad = 0;
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cap_read = 0;
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channel = (byte) 1;
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for (int i=0; i<NBITS; i++) {
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digitalWrite(LEDS[i], HIGH);
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delay(10);
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}
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display(loadingDisplay[4]);
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while (!cap.begin(0x5A)) delay(10); // If MPR121 is not ready, wait for it
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display(loadingDisplay[5]);
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loadAll();
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last_save = millis();
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last_gate = millis();
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last_next = millis();
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display(0);
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}
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void loop() {
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@ -138,14 +156,16 @@ void loop() {
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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 chan = 0; chan < 6; chan++) {
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if (mute[chan]) continue;
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for (int i = 0; i < MAXKEYS; i++)
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if (current[chan]->kboard_s[i] && !kboard[i] && !current[chan]->next->kboard_s[i])
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playNote(i, !current[chan]->kboard_s[i], (byte) chan+1);
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if (current[chan] == NULL) continue;
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for (int i = 0; i < NOCTAVES; i++)
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for (int j = 0; j < NKEYS; j++)
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if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 != channel && ((kboard[i]>>j) & 1)))
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playNote((i*NKEYS)+j, LOW, (byte) chan+1);
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for (int i = 0; i < MAXDPAD; i++)
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if (current[chan]->dpad_s[i] && !dpad[i])
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playDrum(i, !current[chan]->dpad_s[i], (byte) chan+1);
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}
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if (((current[chan]->dpad_s >> i) & 1) && !(chan+1 != channel && ((dpad>>i) & 1)))
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playDrum(i, LOW, (byte) chan+1);
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}
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}
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if (plus_step && minus_step) {
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@ -163,8 +183,8 @@ void loop() {
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if (clear_step) {
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clear_step = LOW;
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if (current[channel-1] != NULL) {
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for (int i = 0; i < MAXKEYS; i++) current[channel-1]->kboard_s[i] = LOW;
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for (int i = 0; i < MAXDPAD; i++) current[channel-1]->dpad_s[i] = LOW;
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for (int i = 0; i < NOCTAVES; i++) current[channel-1]->kboard_s[i] = 0;
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current[channel-1]->dpad_s = 0;
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}
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}
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@ -174,13 +194,14 @@ void loop() {
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for (int chan = 0; chan < 6; chan++) {
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if (mute[chan]) continue;
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if (current[chan] != NULL) { // PLAY all step notes in all unmuted channels
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if (!(npressed > 0 && chan == (int) channel-1))
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for (int i = 0; i < MAXKEYS; i++)
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if (current[chan]->kboard_s[i] && !kboard[i])
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playNote(i, current[chan]->kboard_s[i], (byte) chan+1);
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for (int i = 0; i < MAXDPAD; i++) // Drums are played nonetheless because drums already layered won't overrule
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if (current[chan]->dpad_s[i] && !dpad[i])
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playDrum(i, current[chan]->dpad_s[i], (byte) chan+1);
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for (int i = 0; i < NOCTAVES; i++)
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for (int j = 0; j < NKEYS; j++)
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if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 == channel && npressed > 0))
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playNote((i*NKEYS)+j, HIGH, (byte) chan+1);
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for (int i = 0; i < MAXDPAD; i++) // Drums are played nonetheless because drums already layered won't overrule
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if ((current[chan]->dpad_s >> i) & 1)
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playDrum(i, HIGH, (byte) chan+1);
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}
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}
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last_gate = millis();
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@ -190,51 +211,48 @@ void loop() {
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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 chan = 0; chan < 6; chan++) {
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if (mute[chan]) continue;
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for (int i = 0; i < MAXKEYS; i++)
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if (current[chan]->kboard_s[i] && !kboard[i])
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playNote(i, !current[chan]->kboard_s[i], (byte) chan+1);
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if (current[chan] == NULL) continue;
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for (int i = 0; i < NOCTAVES; i++)
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for (int j = 0; j < NKEYS; j++)
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if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 != channel && ((kboard[i]>>j) & 1)))
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playNote((i*NKEYS)+j, LOW, (byte) chan+1);
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for (int i = 0; i < MAXDPAD; i++)
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if (current[chan]->dpad_s[i] && !dpad[i])
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playDrum(i, !current[chan]->dpad_s[i], (byte) chan+1);
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if (((current[chan]->dpad_s >> i) & 1) && !(chan+1 != channel && ((dpad>>i) & 1)))
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playDrum(i, LOW, (byte) chan+1);
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}
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}
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dpadhit = LOW;
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for (int cButton = 0; cButton < MAXDPAD; cButton++) {
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if (( 1 & (cap_read >> cButton)) ^ dpad[cButton]) {
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dpad[cButton] = (bool) 1 & (cap_read >> cButton);
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playDrum(cButton, dpad[cButton], channel);
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}
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dpadhit = (dpad[cButton] || dpadhit);
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difference = dpad ^ cap_read;
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for (int c = 0; c < MAXDPAD; c++) {
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if ((difference>>c) & 1) playDrum(c, ((cap_read>>c) & 1), channel);
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if (dpadhit || ((cap_read>>c) & 1)) dpadhit = HIGH;
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if (difference != 0) dpad = cap_read;
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}
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npressed = 0;
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for (int cOCTAVE = 0; cOCTAVE < 4; cOCTAVE++) {
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digitalWrite(OCTAVE[cOCTAVE], HIGH);
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npressed += eval(scan(cOCTAVE));
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npressed += eval(scan(), cOCTAVE);
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digitalWrite(OCTAVE[cOCTAVE], LOW);
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}
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if (current[channel-1] != NULL && digitalRead(OW)) {
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if (npressed > 0) for (int i = 0; i < MAXKEYS; i++)
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current[channel-1]->kboard_s[i] = kboard[i];
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if (dpadhit) for (int i = 0; i < MAXDPAD; i++)
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current[channel-1]->dpad_s[i] = dpad[i] || current[channel-1]->dpad_s[i]; // Drum hits aren't exclusive!
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current[channel-1]->clean = LOW;
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if (npressed > 0) for (int i = 0; i < NOCTAVES; i++) {
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difference = kboard[i] ^ current[channel-1]->kboard_s[i];
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if (difference != 0) current[channel-1]->kboard_s[i] = kboard[i];
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}
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if (dpadhit) current[channel-1]->dpad_s = current[channel-1]->dpad_s | dpad; // Drum hits aren't exclusive!
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}
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}
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// Hardware specific functions
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octst scan(int nOct) { // This function reads the 12 NOTE pins and returns a struct
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int c; // with 1 bool for each NOTE
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octst output;
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output.nOct = nOct;
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for (c = 0; c < 12; c++) {
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output.stat[c] = digitalRead(NOTE[c]);
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int scan() { // This function reads the 12 NOTE pins and returns a struct
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int output = 0;
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for (int c = 0; c < NKEYS; c++) {
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if (digitalRead(NOTE[c])) output = output | (1<<c);
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}
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return output;
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}
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@ -248,17 +266,16 @@ void display(int number){
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// NOTE Functions
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int eval(octst input) {
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int eval(int input, int nOct) {
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int pressed = 0;
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int sNOTE = input.nOct * 12;
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int sNOTE = nOct * 12;
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difference = kboard[nOct] ^ 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], 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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if ((difference>>c) & 1) playNote(c + sNOTE, ((input>>c) & 1), channel);
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if (((input>>c) & 1)) pressed++;
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}
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if (difference != 0) kboard[nOct] = input;
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return pressed;
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}
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@ -286,6 +303,12 @@ void playDrum(int c, bool status, byte chan) {
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// Sync functions
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void sync() {
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if (millis() > last_save + (unsigned long) MINUTE*INTERVAL) {
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saveAll();
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last_save = millis();
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}
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if (next_step != (bool) !digitalRead(NEXT)) { // Used to increase channel with a button because I don't have a rotary switch (yet!)
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next_step = (bool) !digitalRead(NEXT);
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if (millis() > last_next+DEBOUNCE && next_step == HIGH) {
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@ -297,7 +320,7 @@ void sync() {
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if (Serial.read() == MIDICLOCK) {
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//sem_beat++;
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midiclock++;
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if (midiclock == BPQN){
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if (midiclock == BPQN) {
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midiclock = 0;
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sem_beat++;
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}
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@ -322,8 +345,8 @@ bool insertStep(byte chan) {
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return LOW;
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}
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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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for (int i = 0; i < NOCTAVES; i++) newS->kboard_s[i] = 0;
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newS->dpad_s = 0;
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if (head[chan] == NULL) {
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newS->next = newS;
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@ -392,4 +415,96 @@ bool deleteStep(byte chan) {
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}
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nstep[chan] = c;
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return HIGH;
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}
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// SAVING FUNCTIONS
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void saveAll() {
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int currAddr = (int) sizeof(save_p);
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link buffer;
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for (int c=0; c<MAXCHANNEL; c++) {
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display(loadingDisplay[c]);
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if (current[c] == NULL) {
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saveH.headAddr[c] = -1;
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saveH.tailAddr[c] = -1;
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continue;
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}
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buffer = head[c];
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saveH.headAddr[c] = currAddr;
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currAddr = saveStep(buffer, currAddr);
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buffer = buffer->next;
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while (buffer != head[c]) {
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currAddr = saveStep(buffer, currAddr);
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buffer = buffer->next;
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}
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saveH.tailAddr[c] = currAddr;
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}
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saveHead(saveH);
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}
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void loadAll() {
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saveH = loadHead();
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int currAddr = saveH.headAddr[0];
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link buffer;
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for (int c=0; c<MAXCHANNEL; c++) {
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display(loadingDisplay[c]);
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if (saveH.headAddr[c] < 0) continue;
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head[c] = newStep();
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current[c] = head[c];
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currAddr = saveH.headAddr[c];
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currAddr = loadStep(head[c], currAddr);
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buffer = head[c];
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while (currAddr < saveH.tailAddr[c]) {
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link newS = newStep();
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currAddr = loadStep(newS, currAddr);
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buffer->next = newS;
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buffer = newS;
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}
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buffer->next = head[c];
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}
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}
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save_p loadHead() {
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save_p save;
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byte* pointer = (byte*) (void*) &save;
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int addr = 0;
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for (int i=0; i < (int) sizeof(save_p); i++) {
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*pointer = EEPROM.read(addr);
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addr++;
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pointer++;
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}
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return save;
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}
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void saveHead(save_p save) {
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byte* pointer = (byte*) (void*) &save;
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int addr = 0;
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for (int i=0; i < (int) sizeof(save_p); i++){
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EEPROM.update(addr, *pointer);
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addr++;
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pointer++;
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}
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}
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|
||||
int saveStep(link curr_step, int addr) {
|
||||
step buffer = *curr_step;
|
||||
buffer.next = (link) (addr + (int) sizeof(SequencerStep));
|
||||
byte* pointer = (byte*) (void*) &buffer;
|
||||
for (int i=0; i < (int) sizeof(SequencerStep); i++) {
|
||||
EEPROM.update(addr, *pointer);
|
||||
pointer++;
|
||||
addr++;
|
||||
}
|
||||
return addr;
|
||||
}
|
||||
|
||||
int loadStep(link step, int addr) {
|
||||
byte* pointer = (byte*) (void*) step;
|
||||
for (int i=0; i<(int) sizeof(SequencerStep); i++) {
|
||||
*pointer = EEPROM.read(addr);
|
||||
pointer++;
|
||||
addr++;
|
||||
}
|
||||
return addr;
|
||||
}
|
||||
Loading…
Reference in a new issue