It lives again! Adafruit Trellis M4 Express

main-play.h

@@ -51,7 +51,6 @@ void doPlay(bool forceDisplayUpdate) {
     updateDisplay = true;
   }
 
-#if 0
   if (updateDisplay) {
     // Look up the note name
     const char *noteName = NoteName(pipe.CurrentNote);
@@ -69,5 +68,4 @@ void doPlay(bool forceDisplayUpdate) {
     display.display();
     last_note = pipe.CurrentNote;
   }
-#endif
 }

pipe.cpp

@@ -17,15 +17,7 @@ bool Pipe::Init() {
     return false;
   }
   
-  // Knee sensor
-  if (!kneeSensor.begin()) {
-    return false;
-  }
-  
   // Bag button
-  bagSensor.begin();
-  // This library takes the entire program out if you poll it 5-40 times without anything connected
-  bag_enabled = bagSensor.isConnected();
 
   return true;
 }
@@ -37,29 +29,31 @@ void Pipe::Update() {
   Keys = 0;
 
   // Read the bag state, if there's a bag.
-  // if there isn't a bag, don't try, or this library will crash the program.
   if (bag_enabled) {
-    Bag = bagSensor.isPressed();
+    // XXX: re-enable the bag sensor at some point
+    //Bag = bagSensor.isPressed();
   } else {
     Bag = false;
   }
 
-  // 0x6c is actually 8 bytes, but all 8 are always the same...
-  KneeClosedness = 255 - kneeSensor.readRange();
-
   for (int i = 0; i < NUM_KEYS; ++i) {
+    int key = KeySensor[i];
+    if (key == -1) {
+      continue;
+    }
+
     uint16_t sensorReading = capSensor.filteredData(i);
     uint16_t val = OPENVAL - min(max(sensorReading, CLOSEDVAL), OPENVAL);
-    KeyPressure[i] = val / float(GLISSANDO_STEPS);
+    KeyPressure[key] = val / float(GLISSANDO_STEPS);
 
     // keys = all keys which are at least touched
     // glissandoKeys = all keys which are fully closed
     // The glissando operation computes the difference.
-    if (KeyPressure[i] > 0.0) {
-      bitSet(Keys, i);
+    if (KeyPressure[key] > 0.0) {
+      bitSet(Keys, key);
     }
-    if (KeyPressure[i] == 1.0)  {
-      bitSet(glissandoKeys, i);
+    if (KeyPressure[key] == 1.0)  {
+      bitSet(glissandoKeys, key);
     }
   }
 
@@ -81,6 +75,9 @@ void Pipe::Update() {
   // Was the high bit set? That indicates "alternate fingering", which sounds different.
   AltFingering = f.alt;
 
+  // All keys closed + knee = no sound
+  Silent = ((KeyPressure[11] > 0) && (CurrentNote == NOTE_D4));
+
   // If the bag is squished, jump up an octave
   // But only if the left thumb is down!
   if (Bag && (Keys & bit(7))) {
@@ -88,8 +85,6 @@ void Pipe::Update() {
     GlissandoNote += NOTE_OCTAVE;
   }
 
-  // All keys closed + knee = no sound
-  Silent = ((KneeClosedness > 240) && (Keys == 0xff));
 }
 
 bool Pipe::Pressed(uint8_t key) {

pipe.h

@@ -8,6 +8,9 @@
 
 #define NUM_KEYS 12
 
+// A mapping of MPR121 input to pipe key
+const int KeySensor[NUM_KEYS] = { 11, -1, 0, 1, 2, 3, 4, 5, 6, 7, -1, -1 };
+
 enum Adjust {
   ADJUST_DOWN = -1,
   ADJUST_NONE = 0,
@@ -17,9 +20,6 @@ enum Adjust {
 
 class Pipe {
  public:
-  // kneeClosedness indicates how "closed" the knee sensor is. 0 = wide open.
-  uint8_t KneeClosedness;
-
   // keys are which keys are being pressed.
   uint16_t Keys;
   uint16_t KeysLast;
@@ -70,8 +70,6 @@ class Pipe {
 
  private:
   Adafruit_MPR121 capSensor;
-  Adafruit_VL6180X kneeSensor;
-  QwiicButton bagSensor;
   bool bag_enabled;
   unsigned long nextRepeat[NUM_KEYS];
   bool typematicEvent(uint8_t key, uint16_t delay, uint16_t repeat);

uilleann.ino

@@ -11,16 +11,15 @@
 
 const char *buildDate = __DATE__;
 
-#if defined(ADAFRUIT_TRELLIS_MAdafruit_SSD1306EXPRESS)
 #include <Adafruit_NeoTrellisM4.h>
-Adafruit_NeoTrellisM4 trellis;  // = Adafruit_NeoTrellisM4();
-#endif
+Adafruit_NeoTrellisM4 trellis = Adafruit_NeoTrellisM4();
+
 
 Pipe pipe;
 Tuning tuning = Tuning(NOTE_D4, PITCH_CONCERT_D4, TUNINGSYSTEM_JUST);
-
 Adafruit_SSD1306 display(128, 32, &Wire, -1);
 
+
 // Settings
 #define VOLUME_INITIAL 0.8
 uint8_t patch[4] = {0};
@@ -40,13 +39,7 @@ AudioMixer4 mixL;
 AudioMixer4 mixR;
 AudioSynthNoiseWhite noise;
 
-#if defined(ADAFRUIT_TRELLIS_M4_EXPRESS)
 AudioOutputAnalogStereo out1;
-#else
-AudioOutputI2S out1;
-#endif
-
-AudioControlSGTL5000 sgtl5000;
 
 AudioConnection FMVoicePatchCords[] = {
     {noise, 0, mixL, 3},
@@ -80,15 +73,18 @@ AudioConnection FMVoicePatchCords[] = {
     FMVoiceWiring(Regulators[2]),
 };
 
-void blink(bool forever) {
+void blink(int count, bool forever) {
   for (;;) {
+    for (int i = 0; i < count; i++) {
       digitalWrite(LED_BUILTIN, true);
       delay(200);
       digitalWrite(LED_BUILTIN, false);
       delay(200);
+    }
     if (!forever) {
       return;
     }
+    delay(1200);
   }
 }
 
@@ -139,34 +135,30 @@ void setup() {
 
   // Initialize display
   if (!display.begin(SSD1306_SWITCHCAPVCC, 0x3c)) {
-    blink(true);
+    blink(2, true);
   }
   digitalWrite(LED_BUILTIN, false);
   diag("Hello!");
 
-#if defined(ADAFRUIT_TRELLIS_M4_EXPRESS)
   diag("Trellis...");
   trellis.begin();
-#endif
 
   diag("Pipe...");
   while (!pipe.Init()) {
     diag("Pipe connected?");
-    blink(false);
+    blink(3, false);
   }
 
   diag("Audio...");
   AudioMemory(120);
   AudioProcessorUsageMaxReset();
   AudioMemoryUsageMaxReset();
-  sgtl5000.enable();
-  sgtl5000.volume(volume[4]);
 
   diag("Synth...");
   loadPatch(0);
   loadPatch(1);
   loadPatch(2);
-  noise.amplitude(1.0);
+  noise.amplitude(0.0);
 
   diag("Mixer...");
   // Turn on all mixer channels
@@ -216,23 +208,20 @@ void loop() {
   static bool upSetting = true;  // GET IT?
 
   pipe.Update();
-
-#if defined(ADAFRUIT_TRELLIS_M4_EXPRESS)
   trellis.tick();
-#endif
 
-  // If we're infinitely (for the sensor) off the knee,
-  // we might be in setup mode.
-  if (pipe.KneeClosedness == 0) {
-    // We only enter into setup mode if no keys are pressed.
-    // This hopefully avoids accidentally entering setup while playing.
-    // Like say you're playing a jaunty tune and suddenly there's an earthquake.
-    // You ought to be able to finish the tune off before your pipe goes into setup mode.
-    if (upSetting || (pipe.Keys == 0)) {
+  if (trellis.justPressed(0)) {
+    upSetting = !upSetting;
+  }
+
+  if (upSetting) {
+    trellis.setPixelColor(0, 0x200000);
     doSetup();
-      upSetting = true;
     return;
   }
+
+  for (int i = 0; i < 12; i += 1) {
+    trellis.setPixelColor(i, 0xffffff * pipe.KeyPressure[i]);
   }
 
   doPlay(upSetting);