alemi/cv-keyboard
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Storage required for sequences has been dramatically reduced. Introduced auto save and load (every 15 mins)

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əlemi 2019-07-10 03:55:27 +02:00
parent 66fe2591af
commit 51f6c942f3
1 changed files with 195 additions and 80 deletions
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267
cvkeyboard.ino
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@ -1,6 +1,7 @@
#include <MIDI.h> #include <MIDI.h>
#include <HID.h> #include <HID.h>
#include <Wire.h> #include <Wire.h>
#include <EEPROM.h>
#include <Adafruit_MPR121.h> #include <Adafruit_MPR121.h>
#define BPQN 24 // Ableton sends 24, VCV rack only one, by standard should be 24? #define BPQN 24 // Ableton sends 24, VCV rack only one, by standard should be 24?
@ -8,35 +9,43 @@
#define NOTEOffset 36 #define NOTEOffset 36
#define DRUMSHIFT 6 #define DRUMSHIFT 6
#define drumOffset 60 #define drumOffset 60
#define MINUTE 60000 #define MINUTE 60000
#define INTERVAL 15 // How many minutes between autosave
#define MIDICLOCK 0xf8 #define MIDICLOCK 0xf8
#define MAXKEYS 48 #define MAXKEYS 48
#define MAXDPAD 7 #define MAXDPAD 7
#define MAXSTEP 64 #define MAXSTEP 64
#define MAXCHANNEL 6
#define NKEYS 12
#define NOCTAVES 4
#define NBITS 6 #define NBITS 6
#define DEBOUNCE 100 #define DEBOUNCE 100
MIDI_CREATE_DEFAULT_INSTANCE(); MIDI_CREATE_DEFAULT_INSTANCE();
typedef struct SequencerStep* link; typedef struct SequencerStep* link;
typedef struct OCTAVEStatus { // This struct is for an OCTAVE status. Each bool is for 1 NOTE typedef struct SavePoint {
bool stat[12]; int headAddr[MAXCHANNEL];
int nOct; int tailAddr[MAXCHANNEL];
} octst; } save_p;
typedef struct SequencerStep { typedef struct SequencerStep {
bool clean = LOW; int kboard_s[4];
bool kboard_s[MAXKEYS]; int dpad_s;
bool dpad_s[MAXDPAD];
unsigned short stepnumber; unsigned short stepnumber;
link next; link next;
} step; } step;
save_p saveH;
// PIN DECLARATIONS // PIN DECLARATIONS
int NOTE[12] = { // Pins used to read each note (C is 0, B is 11) int NOTE[NKEYS] = { // 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[NOCTAVES] = { // Pins associated to each OCTAVE's contact bar
12, 9, 8, 10 }; 12, 9, 8, 10 };
int LEDS[NBITS] = { // Pins used for leds int LEDS[NBITS] = { // Pins used for leds
5, 4, 2, 14, 16, 18 }; 5, 4, 2, 14, 16, 18 };
@ -46,9 +55,11 @@ int DEL = 11; // Capacitive button used for DELETE button
int PLUS = 10; // Capacitive button used for PLUS button int PLUS = 10; // Capacitive button used for PLUS button
int MINUS = 9; // Capacitive button used for MINUS button int MINUS = 9; // Capacitive button used for MINUS button
// GLOBAL SETTINGS // USEFUL ITERABLES
int pentathonic[10] = { // Used to quantize drum notes int pentathonic[10] = { // Used to quantize drum notes
0, 2, 5, 7, 9, 12, 14, 17, 19, 21 }; 0, 2, 5, 7, 9, 12, 14, 17, 19, 21 };
int loadingDisplay[6] = {
1, 3, 7, 15, 31, 63};
// PLACEHOLDERS // PLACEHOLDERS
byte velocity = 100; // byte velocity = 100; //
@ -72,41 +83,48 @@ 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 next_step = LOW; // Used to wait for a full switch cycle
int sem_beat = 0; // Basic semaphore used to sync with MIDI beat int sem_beat = 0; // Basic semaphore used to sync with MIDI beat
int sem_gate = 0; // Basic semaphore used for gate timing int sem_gate = 0; // Basic semaphore used for gate timing
unsigned long last_gate = 0; // Gate start time for last sequencer step unsigned long last_gate; // Gate start time for last sequencer step
unsigned long gate_length = 1000; // ms of keypress if arpeggiator unsigned long last_next;
unsigned long last_next = 0; unsigned long last_save;
unsigned long gate_length = 200; // ms of keypress if arpeggiator
bool dpadhit = LOW; // If any drum pad has been hit in this cycle, this is true bool dpadhit = LOW; // If any drum pad has been hit in this cycle, this is true
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[MAXKEYS]; // Last status of keyboard int kboard[4]; // Last status of keyboard
bool dpad[MAXDPAD]; // Last status of Capacitive Buttons int dpad; // Last status of Capacitive Buttons
int cap_read = 0; int cap_read;
int difference = 0; // Used in many places, might as well be a global variable
Adafruit_MPR121 cap = Adafruit_MPR121(); Adafruit_MPR121 cap = Adafruit_MPR121();
void setup() { void setup() {
for (int cOCTAVE = 0; cOCTAVE < 4; cOCTAVE++) pinMode(OCTAVE[cOCTAVE], OUTPUT); display(loadingDisplay[0]);
for (int cNOTE = 0; cNOTE < 12; cNOTE++) pinMode(NOTE[cNOTE], INPUT); for (int cOCTAVE = 0; cOCTAVE < NOCTAVES; cOCTAVE++) pinMode(OCTAVE[cOCTAVE], OUTPUT);
for (int cNOTE = 0; cNOTE < NKEYS; cNOTE++) pinMode(NOTE[cNOTE], INPUT);
for (int cLED = 0; cLED < NBITS; cLED++) pinMode(LEDS[cLED], OUTPUT); for (int cLED = 0; cLED < NBITS; cLED++) pinMode(LEDS[cLED], OUTPUT);
while (!cap.begin(0x5A)) delay(10); // If MPR121 is not ready, wait for it pinMode(OW, INPUT_PULLUP); // Used for overwrite switch
for (int cStat = 0; cStat < MAXKEYS; cStat++) kboard[cStat] = LOW; // All keyboard keys start LOW pinMode(NEXT, INPUT_PULLUP);
display(loadingDisplay[1]);
MIDI.begin(MIDI_CHANNEL_OFF); MIDI.begin(MIDI_CHANNEL_OFF);
Serial.begin(115200); // Uncomment this if you use Hairless and set baud rate Serial.begin(115200); // Uncomment this if you use Hairless and set baud rate
pinMode(OW, INPUT_PULLUP); // Used for overwrite switch display(loadingDisplay[2]);
pinMode(NEXT, INPUT_PULLUP); // Used for overwrite switch
for (int i = 0; i < 6; i++){ for (int i = 0; i < 6; i++){
current[i] = NULL; current[i] = NULL;
head[i] = NULL; head[i] = NULL;
nstep[i] = 0; nstep[i] = 0;
mute[i] = LOW; mute[i] = LOW;
} }
display(loadingDisplay[3]);
for (int cOCTAVE = 0; cOCTAVE < NOCTAVES; cOCTAVE++) kboard[cOCTAVE] = 0;
dpad = 0;
cap_read = 0;
channel = (byte) 1; channel = (byte) 1;
for (int i=0; i<NBITS; i++) { display(loadingDisplay[4]);
digitalWrite(LEDS[i], HIGH); while (!cap.begin(0x5A)) delay(10); // If MPR121 is not ready, wait for it
delay(10); display(loadingDisplay[5]);
} loadAll();
last_save = millis();
last_gate = millis(); last_gate = millis();
last_next = millis(); last_next = millis();
display(0);
} }
void loop() { void loop() {
@ -138,13 +156,15 @@ void loop() {
if (sem_gate > 0) { // If step was shorter than GATE, close all open notes before next step if (sem_gate > 0) { // If step was shorter than GATE, close all open notes before next step
sem_gate--; sem_gate--;
for (int chan = 0; chan < 6; chan++) { for (int chan = 0; chan < 6; chan++) {
if (mute[chan]) continue; if (current[chan] == NULL) continue;
for (int i = 0; i < MAXKEYS; i++) for (int i = 0; i < NOCTAVES; i++)
if (current[chan]->kboard_s[i] && !kboard[i] && !current[chan]->next->kboard_s[i]) for (int j = 0; j < NKEYS; j++)
playNote(i, !current[chan]->kboard_s[i], (byte) chan+1); if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 != channel && ((kboard[i]>>j) & 1)))
playNote((i*NKEYS)+j, LOW, (byte) chan+1);
for (int i = 0; i < MAXDPAD; i++) for (int i = 0; i < MAXDPAD; i++)
if (current[chan]->dpad_s[i] && !dpad[i]) if (((current[chan]->dpad_s >> i) & 1) && !(chan+1 != channel && ((dpad>>i) & 1)))
playDrum(i, !current[chan]->dpad_s[i], (byte) chan+1); playDrum(i, LOW, (byte) chan+1);
} }
} }
@ -163,8 +183,8 @@ void loop() {
if (clear_step) { if (clear_step) {
clear_step = LOW; clear_step = LOW;
if (current[channel-1] != NULL) { if (current[channel-1] != NULL) {
for (int i = 0; i < MAXKEYS; i++) current[channel-1]->kboard_s[i] = LOW; for (int i = 0; i < NOCTAVES; i++) current[channel-1]->kboard_s[i] = 0;
for (int i = 0; i < MAXDPAD; i++) current[channel-1]->dpad_s[i] = LOW; current[channel-1]->dpad_s = 0;
} }
} }
@ -174,13 +194,14 @@ void loop() {
for (int chan = 0; chan < 6; chan++) { for (int chan = 0; chan < 6; chan++) {
if (mute[chan]) continue; if (mute[chan]) continue;
if (current[chan] != NULL) { // PLAY all step notes in all unmuted channels if (current[chan] != NULL) { // PLAY all step notes in all unmuted channels
if (!(npressed > 0 && chan == (int) channel-1)) for (int i = 0; i < NOCTAVES; i++)
for (int i = 0; i < MAXKEYS; i++) for (int j = 0; j < NKEYS; j++)
if (current[chan]->kboard_s[i] && !kboard[i]) if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 == channel && npressed > 0))
playNote(i, current[chan]->kboard_s[i], (byte) chan+1); playNote((i*NKEYS)+j, HIGH, (byte) chan+1);
for (int i = 0; i < MAXDPAD; i++) // Drums are played nonetheless because drums already layered won't overrule for (int i = 0; i < MAXDPAD; i++) // Drums are played nonetheless because drums already layered won't overrule
if (current[chan]->dpad_s[i] && !dpad[i]) if ((current[chan]->dpad_s >> i) & 1)
playDrum(i, current[chan]->dpad_s[i], (byte) chan+1); playDrum(i, HIGH, (byte) chan+1);
} }
} }
last_gate = millis(); last_gate = millis();
@ -190,51 +211,48 @@ void loop() {
if (sem_gate > 0 && (millis() - last_gate) > gate_length) { if (sem_gate > 0 && (millis() - last_gate) > gate_length) {
sem_gate--; sem_gate--;
for (int chan = 0; chan < 6; chan++) { for (int chan = 0; chan < 6; chan++) {
if (mute[chan]) continue; if (current[chan] == NULL) continue;
for (int i = 0; i < MAXKEYS; i++) for (int i = 0; i < NOCTAVES; i++)
if (current[chan]->kboard_s[i] && !kboard[i]) for (int j = 0; j < NKEYS; j++)
playNote(i, !current[chan]->kboard_s[i], (byte) chan+1); if (((current[chan]->kboard_s[i] >> j) & 1) && !(chan+1 != channel && ((kboard[i]>>j) & 1)))
playNote((i*NKEYS)+j, LOW, (byte) chan+1);
for (int i = 0; i < MAXDPAD; i++) for (int i = 0; i < MAXDPAD; i++)
if (current[chan]->dpad_s[i] && !dpad[i]) if (((current[chan]->dpad_s >> i) & 1) && !(chan+1 != channel && ((dpad>>i) & 1)))
playDrum(i, !current[chan]->dpad_s[i], (byte) chan+1); playDrum(i, LOW, (byte) chan+1);
} }
} }
dpadhit = LOW; dpadhit = LOW;
for (int cButton = 0; cButton < MAXDPAD; cButton++) { difference = dpad ^ cap_read;
if (( 1 & (cap_read >> cButton)) ^ dpad[cButton]) { for (int c = 0; c < MAXDPAD; c++) {
dpad[cButton] = (bool) 1 & (cap_read >> cButton); if ((difference>>c) & 1) playDrum(c, ((cap_read>>c) & 1), channel);
playDrum(cButton, dpad[cButton], channel); if (dpadhit || ((cap_read>>c) & 1)) dpadhit = HIGH;
} if (difference != 0) dpad = cap_read;
dpadhit = (dpad[cButton] || dpadhit);
} }
npressed = 0; npressed = 0;
for (int cOCTAVE = 0; cOCTAVE < 4; cOCTAVE++) { for (int cOCTAVE = 0; cOCTAVE < 4; cOCTAVE++) {
digitalWrite(OCTAVE[cOCTAVE], HIGH); digitalWrite(OCTAVE[cOCTAVE], HIGH);
npressed += eval(scan(cOCTAVE)); npressed += eval(scan(), cOCTAVE);
digitalWrite(OCTAVE[cOCTAVE], LOW); digitalWrite(OCTAVE[cOCTAVE], LOW);
} }
if (current[channel-1] != NULL && digitalRead(OW)) { if (current[channel-1] != NULL && digitalRead(OW)) {
if (npressed > 0) for (int i = 0; i < MAXKEYS; i++) if (npressed > 0) for (int i = 0; i < NOCTAVES; i++) {
current[channel-1]->kboard_s[i] = kboard[i]; difference = kboard[i] ^ current[channel-1]->kboard_s[i];
if (dpadhit) for (int i = 0; i < MAXDPAD; i++) if (difference != 0) current[channel-1]->kboard_s[i] = kboard[i];
current[channel-1]->dpad_s[i] = dpad[i] || current[channel-1]->dpad_s[i]; // Drum hits aren't exclusive! }
current[channel-1]->clean = LOW; if (dpadhit) current[channel-1]->dpad_s = current[channel-1]->dpad_s | dpad; // Drum hits aren't exclusive!
} }
} }
// Hardware specific functions // Hardware specific functions
octst scan(int nOct) { // This function reads the 12 NOTE pins and returns a struct int scan() { // This function reads the 12 NOTE pins and returns a struct
int c; // with 1 bool for each NOTE int output = 0;
octst output; for (int c = 0; c < NKEYS; c++) {
if (digitalRead(NOTE[c])) output = output | (1<<c);
output.nOct = nOct;
for (c = 0; c < 12; c++) {
output.stat[c] = digitalRead(NOTE[c]);
} }
return output; return output;
} }
@ -248,17 +266,16 @@ void display(int number){
// NOTE Functions // NOTE Functions
int eval(octst input) { int eval(int input, int nOct) {
int pressed = 0; int pressed = 0;
int sNOTE = input.nOct * 12; int sNOTE = nOct * 12;
difference = kboard[nOct] ^ input;
for (int c = 0; c < 12; c++) { for (int c = 0; c < 12; c++) {
if (input.stat[c] ^ kboard[c + sNOTE]) { if ((difference>>c) & 1) playNote(c + sNOTE, ((input>>c) & 1), channel);
playNote(c + sNOTE, input.stat[c], channel); if (((input>>c) & 1)) pressed++;
kboard[c + sNOTE] = input.stat[c];
}
if (kboard[c + sNOTE] == HIGH) pressed++;
} }
if (difference != 0) kboard[nOct] = input;
return pressed; return pressed;
} }
@ -286,6 +303,12 @@ void playDrum(int c, bool status, byte chan) {
// Sync functions // Sync functions
void sync() { void sync() {
if (millis() > last_save + (unsigned long) MINUTE*INTERVAL) {
saveAll();
last_save = millis();
}
if (next_step != (bool) !digitalRead(NEXT)) { // Used to increase channel with a button because I don't have a rotary switch (yet!) if (next_step != (bool) !digitalRead(NEXT)) { // Used to increase channel with a button because I don't have a rotary switch (yet!)
next_step = (bool) !digitalRead(NEXT); next_step = (bool) !digitalRead(NEXT);
if (millis() > last_next+DEBOUNCE && next_step == HIGH) { if (millis() > last_next+DEBOUNCE && next_step == HIGH) {
@ -322,8 +345,8 @@ bool insertStep(byte chan) {
return LOW; return LOW;
} }
for (int i = 0; i < MAXKEYS; i++) newS->kboard_s[i] = LOW; for (int i = 0; i < NOCTAVES; i++) newS->kboard_s[i] = 0;
for (int i = 0; i < MAXDPAD; i++) newS->dpad_s[i] = LOW; newS->dpad_s = 0;
if (head[chan] == NULL) { if (head[chan] == NULL) {
newS->next = newS; newS->next = newS;
@ -393,3 +416,95 @@ bool deleteStep(byte chan) {
nstep[chan] = c; nstep[chan] = c;
return HIGH; return HIGH;
} }
// SAVING FUNCTIONS
void saveAll() {
int currAddr = (int) sizeof(save_p);
link buffer;
for (int c=0; c<MAXCHANNEL; c++) {
display(loadingDisplay[c]);
if (current[c] == NULL) {
saveH.headAddr[c] = -1;
saveH.tailAddr[c] = -1;
continue;
}
buffer = head[c];
saveH.headAddr[c] = currAddr;
currAddr = saveStep(buffer, currAddr);
buffer = buffer->next;
while (buffer != head[c]) {
currAddr = saveStep(buffer, currAddr);
buffer = buffer->next;
}
saveH.tailAddr[c] = currAddr;
}
saveHead(saveH);
}
void loadAll() {
saveH = loadHead();
int currAddr = saveH.headAddr[0];
link buffer;
for (int c=0; c<MAXCHANNEL; c++) {
display(loadingDisplay[c]);
if (saveH.headAddr[c] < 0) continue;
head[c] = newStep();
current[c] = head[c];
currAddr = saveH.headAddr[c];
currAddr = loadStep(head[c], currAddr);
buffer = head[c];
while (currAddr < saveH.tailAddr[c]) {
link newS = newStep();
currAddr = loadStep(newS, currAddr);
buffer->next = newS;
buffer = newS;
}
buffer->next = head[c];
}
}
save_p loadHead() {
save_p save;
byte* pointer = (byte*) (void*) &save;
int addr = 0;
for (int i=0; i < (int) sizeof(save_p); i++) {
*pointer = EEPROM.read(addr);
addr++;
pointer++;
}
return save;
}
void saveHead(save_p save) {
byte* pointer = (byte*) (void*) &save;
int addr = 0;
for (int i=0; i < (int) sizeof(save_p); i++){
EEPROM.update(addr, *pointer);
addr++;
pointer++;
}
}
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;
}