almost a complete sequencer... almost

soundcube-firmware/soundcube-firmware.ino

@@ -95,6 +95,25 @@ struct Config {
 
 Config config;
 
+struct Sample{
+  float volume = 1.0;
+  WaveStream *file;
+};
+
+Sample samples[NSTREAMS];
+
+struct SequenceStep{
+  int len = 0;
+  Sample *samples[4];
+  void trigger(){
+    for(int i = 0; i < len; i++){
+      samples[i]->file->play(true);
+    }
+  }
+};
+
+SequenceStep steps[16];
+
 void loadConfiguration(Config& config) {
   File file = SD.open("/config.txt");
   JsonDocument doc;
@@ -116,7 +135,7 @@ void loadConfiguration(Config& config) {
   config.ring_color.g_active = doc["ring"]["color"]["active"]["g"] | 80;
   config.ring_color.b_active = doc["ring"]["color"]["active"]["b"] | 50;
 
-  JsonArray _sampleFiles = doc["sampleFiles"];
+  JsonArray _sampleFiles = doc["samples"];
   config.boxid = doc["boxid"].as<String>();
   int i = 0;
   for(JsonVariant item : _sampleFiles){
@@ -208,9 +227,10 @@ bool load_samples(){
     stream[i].begin();
     char filename[64];
     sprintf(filename, "/sound/%s/%s", config.boxid.c_str(), config.sampleFiles[i].c_str());
+    Serial.println(filename);
+
     if(SD.exists(filename)){
       bool loaded = stream[i].load(SD.open(filename));
-      
       if(loaded) {
         Serial.print("file read: ");
         Serial.print(stream[i].wavefile.length);
@@ -230,9 +250,9 @@ bool load_samples(){
     } else {
       for(int k = 0; k < 3; k++){
         digitalWrite(6, HIGH);
-        delay(100);
+        delay(20);
         digitalWrite(6, LOW);
-        delay(50);
+        delay(25);
       }
       return false;
     }
@@ -303,7 +323,7 @@ void setup() {
 
   // Rotary Encoder
   ENC.begin();  //  set direction pin.
-  ENC.setDirection(AS5600_COUNTERCLOCK_WISE);
+  ENC.setDirection(AS5600_CLOCK_WISE);
   ENC.resetCumulativePosition();
 
   pinMode(6, OUTPUT);  // Vibration Motor
@@ -345,6 +365,12 @@ void setup() {
     streams_loaded = load_samples();
   }
 
+  if(streams_loaded) {
+    for(int i = 0; i < NSTREAMS; i++){
+      samples[i].file = &stream[i];
+    }
+  }
+
   digitalWrite(6, HIGH);
   delay(25);
   digitalWrite(6, LOW);
@@ -352,13 +378,13 @@ void setup() {
   digitalWrite(6, HIGH);
   delay(25);
   digitalWrite(6, LOW);
-
 }
 
 bool dactest = false;
 uint32_t last = 0;
 bool tick = false;
 int bar = 0;
+int bar_old = -1;
 int set_bar = 0;
 
 void loop() {
@@ -429,10 +455,8 @@ void loop() {
     }
 
     // Set bar
-    if(buttons[BACK]) set_bar++;
-    if(buttons[POWER]) set_bar--;
-    if(set_bar == 16) set_bar = 0;
-    if(set_bar == -1) set_bar = 15;
+    // if(buttons[BACK]) set_bar++;
+    // if(buttons[POWER]) set_bar--;
     
     if(buttons[DEBUG1]) {
       Serial.println("vol down");
@@ -450,9 +474,13 @@ void loop() {
     }
 
     if(buttons[SELECT]){
-      stream[active % NSTREAMS].toggle();
-      ui_beep = true;
+      //stream[active % NSTREAMS].toggle();
+      //ui_beep = true;
       
+      int n = steps[set_bar].len;
+      steps[set_bar].samples[n] = &samples[0];
+      steps[set_bar].len = (steps[set_bar].len + 1) % 4;
+
       // Flash encoder leds
       ui_leds[0] = CRGB(0, 100, 50);
       ui_leds[1] = CRGB(0, 100, 50);
@@ -464,6 +492,12 @@ void loop() {
     buttonChanged = false;
   }
 
+  if(position < 0) position += 4096;
+  set_bar = (position / 256) % 16;
+
+//  if(set_bar == 16) set_bar = 0;
+//  if(set_bar == -1) set_bar = 15;
+
   //dac.setValue(0, dactest ? 0 : sin((float)millis() / 100.0f) * 32768 + 32768);
 
   // empty LED matrix
@@ -477,16 +511,27 @@ void loop() {
 
 
   for(int i = 0; i < 48; i++){
-    if(floor(i/3) == set_bar){
+    int step = floor(i/3);
+    if(step == set_bar){
       ui_leds[lut_ring_cw[i]] = CRGB(config.ring_color.r_active, config.ring_color.g_active, config.ring_color.b_active);
     }
-    if(floor(i/3) == bar){
+    if(step == bar){
       ui_leds[lut_ring_cw[i]] = CRGB(config.ring_color.r, config.ring_color.g, config.ring_color.b);
     }
+    if(steps[step].len > 0) {
+      ui_leds[lut_ring_cw[i]] = CRGB(0, 10, 0);
+    }
+
+  }
+
+  if(bar != bar_old){
+    if(steps[bar].len > 0) {
+      steps[bar].trigger();
+      Serial.print("trigger ");
+      Serial.println(bar);
+    }
   }
 
-  // if(position < 0) position += 4096;
-  // active_led_ring = (position / 32) % 48;
   
   // // set active LED ring LED
   // for(int i = 0; i < active_led_ring; i++){
@@ -504,5 +549,5 @@ void loop() {
   if(i2s.getUnderflow()) Serial.println("underflow");
 
   //delay(20); // wait 1ms
-
+  bar_old = bar;
 }

soundcube-firmware/wavestream.h

@@ -74,16 +74,21 @@ struct WaveFile{
     return true;
   }
   
-  void readblock(){
+  bool readblock(){
     uint8_t samplebyte[blockalign];
 
     file.read(samplebyte, blockalign);
     if(!file.available() && loop) file.seek(44, SeekSet);
+    if(!file.available() && !loop) {
+      file.seek(44, SeekSet);
+      return false;
+    }
     
     for(int i = 0; i < blockalign; i+=2){
       int16_t sample = (samplebyte[i+1] << 8) + samplebyte[i];
       buffer.push(sample);
     }
+    return true;
   }
 
   int16_t get(){
@@ -94,6 +99,10 @@ struct WaveFile{
     file.seek(44, SeekSet);
   }
 
+  void reset(){
+    file.seek(44, SeekSet);
+  }
+
   bool loop = false;
   uint16_t format = 0;
   uint32_t length = 0;  
@@ -121,7 +130,10 @@ class WaveStream{
 
     void toggle(){playing = !playing;}
 
-    void play(){playing = true;}
+    void play(bool reset = false){
+      if(reset) wavefile.reset();
+      playing = true;
+    }
 
     void stop(){
       playing = false;
@@ -134,7 +146,8 @@ class WaveStream{
       if(!wavefile.buffer.isFull() && playing){
         int cnt = 0;
         while (!wavefile.buffer.isFull() && cnt < 6000) {
-          wavefile.readblock();
+          bool ok = wavefile.readblock();
+          if(!ok) playing = false;
           cnt++;
         }
       }