alemi/cv-keyboard
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Many bugfixes related to hardware upgrade

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This commit is contained in:
əlemi 2019-07-08 02:45:50 +02:00
parent c175980952
commit 9792260a1d
1 changed files with 59 additions and 55 deletions
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84
cvkeyboard.ino
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@ -12,8 +12,9 @@
#define MIDICLOCK 0xf8
#define MAXKEYS 48
#define MAXDPAD 3
#define MAXSTEP 16
#define MAXSTEP 64
#define NBITS 6
#define DEBOUNCE 100
MIDI_CREATE_DEFAULT_INSTANCE();
@ -38,22 +39,20 @@ int NOTE[12] = { // Pins used to read each note (C is 0, B is 11)
int OCTAVE[4] = { // Pins associated to each OCTAVE's contact bar
12, 9, 8, 10 };
int LEDS[NBITS] = { // Pins used for leds
14, 15, 16, 17, 18, 19 };
5, 4, 3, 14, 16, 18 };
int OW = 2; // Pin used for overwrite switch
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
// GLOBAL SETTINGS
//bool overwrite; // Step content is overwritten with pressed keys, could not be needed
int pentathonic[10] = { // Used to quantize drum notes
0, 2, 5, 7, 9, 12, 14, 17, 19, 21 };
// PLACEHOLDERS
byte velocity = 100; //
int bpm = 360; //
bool chan_up = LOW;
// SEQUENCER POINTERS AND RELATED ARRAYS
link head[6];
@ -70,10 +69,12 @@ 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
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 = 0; // Gate start time for last sequencer step
unsigned long gate_length = 1000; // ms of keypress if arpeggiator
unsigned long last_next = 0;
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
bool kboard[MAXKEYS]; // Last status of keyboard
@ -83,19 +84,15 @@ int cap_read = 0;
Adafruit_MPR121 cap = Adafruit_MPR121();
void setup() {
display(1);
for (int cOCTAVE = 0; cOCTAVE < 4; cOCTAVE++) pinMode(OCTAVE[cOCTAVE], OUTPUT);
for (int cNOTE = 0; cNOTE < 12; cNOTE++) pinMode(NOTE[cNOTE], INPUT);
for (int cLED = 0; cLED < NBITS; cLED++) pinMode(LEDS[cLED], OUTPUT);
display(3);
while (!cap.begin(0x5A)) delay(10); // If MPR121 is not ready, wait for it
display(7);
for (int cStat = 0; cStat < MAXKEYS; cStat++) kboard[cStat] = LOW; // All keyboard keys start LOW
display(15);
MIDI.begin(MIDI_CHANNEL_OFF);
Serial.begin(115200); // Uncomment this if you use Hairless and set baud rate
pinMode(OW, INPUT_PULLUP); // Used for overwrite switch
display(31);
pinMode(NEXT, INPUT_PULLUP); // Used for overwrite switch
for (int i = 0; i < 6; i++){
current[i] = NULL;
head[i] = NULL;
@ -103,25 +100,35 @@ void setup() {
mute[i] = LOW;
}
channel = (byte) 1;
display(63);
for (int i=0; i<NBITS; i++) {
digitalWrite(LEDS[i], HIGH);
delay(10);
}
last_gate = millis();
last_next = millis();
display(0);
}
void loop() {
sync();
cap_read = cap.touched();
if (current[channel-1] == NULL) display(analogRead(channel));
if ((cap_read >> 8) & 1) { // Only for now!
for (int i=0; i<NBITS; i++) digitalWrite(LEDS[i], LOW);
digitalWrite(LEDS[channel-1], HIGH);
}
else if (current[channel-1] == NULL) display(analogRead(channel));
else display(current[channel-1]->stepnumber);
cap_read = cap.touched();
plus_step = plus_step || ((cap_read >> PLUS) & 1);
minus_step = minus_step || ((cap_read >> MINUS) & 1);
clear_step = clear_step || ((cap_read >> DEL) & 1);
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);
if (chan_up == LOW) {
if (chan_up == HIGH) {
channel++;
if (channel > 3) channel = (byte) 1;
if (channel > 6) channel = (byte) 1;
}
}
@ -166,8 +173,8 @@ void loop() {
for (int chan = 0; chan < 6; chan++) {
if (mute[chan]) continue;
if (npressed > 0 && chan == (int) channel-1) continue; // If the user is playing in this channel no note should be played
if (current[chan] != NULL) { // PLAY all step notes in all unmuted channels
if (!(npressed > 0 && chan == (int) channel-1))
for (int i = 0; i < MAXKEYS; i++)
if (current[chan]->kboard_s[i] && !kboard[i])
playNote(i, current[chan]->kboard_s[i], (byte) chan+1);
@ -209,7 +216,7 @@ void loop() {
digitalWrite(OCTAVE[cOCTAVE], LOW);
}
if (digitalRead(OW)) {
if (current[channel-1] != NULL && digitalRead(OW)) {
if (npressed > 0) for (int i = 0; i < MAXKEYS; i++)
current[channel-1]->kboard_s[i] = kboard[i];
if (dpadhit) for (int i = 0; i < MAXDPAD; i++)
@ -279,6 +286,13 @@ void playDrum(int c, bool status, byte chan) {
// Sync functions
void sync() {
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);
if (millis() > last_next+DEBOUNCE && next_step == HIGH) {
last_next = millis();
sem_beat++;
}
}
if (Serial.available()) {
if (Serial.read() == MIDICLOCK) {
//sem_beat++;
@ -313,8 +327,9 @@ bool insertStep(byte chan) {
current[chan] = newS;
head[chan] = newS;
nstep[chan] = 1;
return HIGH;
}
else {
newS->stepnumber = current[chan]->stepnumber +1;
buffer = current[chan]->next;
current[chan]->next = newS;
@ -324,7 +339,7 @@ bool insertStep(byte chan) {
buffer->stepnumber++;
buffer = buffer->next;
}
}
return HIGH;
}
@ -346,27 +361,16 @@ bool deleteStep(byte chan) {
}
link buffer = current[chan];
while (buffer->next != current[chan]) buffer = buffer->next;
current[chan] = buffer;
buffer->next = current[chan]->next;
if (current[chan] == head[chan]) {
head[chan] = head[chan]->next;
int i = 0;
buffer = head[chan];
do {
buffer->stepnumber = i;
buffer = buffer->next;
i++;
} while (buffer != head[chan]);
while (buffer->next != current[chan]) buffer = buffer->next; // Search for previous step
buffer->next = current[chan]->next; // Skip step which is being deleted
if (current[chan] == head[chan]) head[chan] = head[chan]->next; // If deleting head, head moves forward
free(current[chan]); // Step is actually deleted
nstep[chan]--; // Decreased the counter
current[chan] = buffer; // Current step becomes previous step
buffer = buffer->next; // Skip the current step which was just before deleted step
while(buffer != head[chan]) { // If this is not the head,
buffer->stepnumber--; // decrease counter
buffer = buffer->next; // and move on
}
else {
buffer = buffer->next;
while (buffer != head[chan]) {
buffer->stepnumber--;
buffer = buffer->next;
}
}
free(current[chan]);
nstep[chan]--;
return HIGH;
}