Incorporate voice changer into M4_Eyes (off by default, performance reasons)

Author: PaintYourDragon

M4_Eyes/M4_Eyes.ino

@@ -69,6 +69,10 @@ float    iris_prev[IRIS_LEVELS] = { 0 };
 float    iris_next[IRIS_LEVELS] = { 0 };
 uint16_t iris_frame = 0;
 
+#if NUM_EYES > 1
+uint32_t priorButtonState;
+#endif
+
 // Callback invoked after each SPI DMA transfer - sets a flag indicating
 // the next line of graphics can be issued as soon as its ready.
 static void dma_callback(Adafruit_ZeroDMA *dma) {
@@ -150,7 +154,7 @@ void setup() {
   seesaw.analogWrite(SEESAW_BACKLIGHT_PIN, 0);
   // Configure Seesaw pins 9,10,11 as inputs
   seesaw.pinModeBulk(0b111000000000, INPUT_PULLUP);
-  uint32_t initialButtonState = seesaw.digitalReadBulk(0b111000000000);
+  priorButtonState = seesaw.digitalReadBulk(0b111000000000);
 #endif
 
   if(i == 1)      fatal("Flash init fail", 100);
@@ -273,11 +277,11 @@ void setup() {
   // of the nose booper when doing this...it self-calibrates on startup.
   char *filename = "config.eye";
 #if NUM_EYES > 1 // Only available on MONSTER M4SK
-  if(!(initialButtonState & 0b001000000000)) {
+  if(!(priorButtonState & 0b001000000000)) {
     filename = "config1.eye";
-  } else if(!(initialButtonState & 0b010000000000)) {
+  } else if(!(priorButtonState & 0b010000000000)) {
     filename = "config2.eye";
-  } else if(!(initialButtonState & 0b100000000000)) {
+  } else if(!(priorButtonState & 0b100000000000)) {
     filename = "config3.eye";
   }
 #endif
@@ -414,6 +418,18 @@ void setup() {
     eye[e].eyeY = eyeOldY;
   }
 
+#if defined(ADAFRUIT_MONSTER_M4SK_EXPRESS)
+  if(voiceOn) {
+    if(!voiceSetup()) {
+      Serial.println("Voice init fail, continuing without");
+      voiceOn = false;
+    } else {
+      currentPitch = voicePitch(currentPitch);
+      digitalWrite(20, HIGH); // Speaker on
+    }
+  }
+#endif
+
   user_setup();
 
   lastLightReadTime = micros() + 2000000; // Delay initial light reading
@@ -901,6 +917,27 @@ void loop() {
         irisValue = irisMin + (sum * irisRange); // 0.0-1.0 -> iris min/max
         if((++iris_frame) >= (1 << IRIS_LEVELS)) iris_frame = 0;
       }
+#if defined(ADAFRUIT_MONSTER_M4SK_EXPRESS)
+      if(voiceOn) {
+        // Read buttons, change pitch
+        uint32_t buttonState  = seesaw.digitalReadBulk(0b111000000000); // Bits CLEAR if currently pressed
+        uint32_t changedState = ~(buttonState ^ priorButtonState);      // Bits CLEAR if changed from before
+        uint32_t newlyPressed = ~(buttonState | changedState);          // Bits SET if newly pressed
+        if(       newlyPressed & 0b001000000000) { // Seesaw pin 9 (inner)
+          currentPitch *= 1.05;
+        } else if(newlyPressed & 0b010000000000) { // Seesaw pin 10 (middle)
+          currentPitch = defaultPitch;
+        } else if(newlyPressed & 0b100000000000) { // Seesaw pin 11 (outer)
+          currentPitch *= 0.95;
+        }
+        if(newlyPressed) {
+          currentPitch = voicePitch(currentPitch);
+          Serial.print("Voice pitch: ");
+          Serial.println(currentPitch);
+        }
+        priorButtonState = buttonState;
+      }
+#endif // ADAFRUIT_MONSTER_M4SK_EXPRESS
       user_loop();
     }
   } // end first-column check

M4_Eyes/file.cpp

@@ -372,6 +372,11 @@ void loadConfig(char *filename) {
         eye[e].rotation &= 3;
       }
 #endif
+#if defined(ADAFRUIT_MONSTER_M4SK_EXPRESS)
+      v = doc["voice"];
+      if(v.is<bool>()) voiceOn = v.as<bool>();
+      currentPitch = defaultPitch = doc["pitch"] | defaultPitch;
+#endif // ADAFRUIT_MONSTER_M4SK_EXPRESS
     }
     file.close();
   } else {

M4_Eyes/globals.h

@@ -84,6 +84,11 @@ GLOBAL_VAR int8_t    blinkPin            GLOBAL_INIT(-1); // Manual both-eyes bl
 #endif
 GLOBAL_VAR uint32_t  boopThreshold       GLOBAL_INIT(17500);
 
+#if defined(ADAFRUIT_MONSTER_M4SK_EXPRESS)
+GLOBAL_VAR bool      voiceOn             GLOBAL_INIT(false);
+GLOBAL_VAR float     currentPitch        GLOBAL_INIT(1.0);
+GLOBAL_VAR float     defaultPitch        GLOBAL_INIT(1.0);
+#endif
 
 // EYE-RELATED STRUCTURES --------------------------------------------------
 
@@ -207,6 +212,14 @@ extern uint32_t        availableRAM(void);
 extern uint32_t        availableNVM(void);
 extern uint8_t        *writeDataToFlash(uint8_t *src, uint32_t len);
 
+// Functions in pdmvoice.cpp
+#if defined(ADAFRUIT_MONSTER_M4SK_EXPRESS)
+extern bool              voiceSetup(void);
+extern float             voicePitch(float p);
+extern void              voiceGain(float g);
+extern volatile uint16_t voiceLastReading;
+#endif // ADAFRUIT_MONSTER_M4SK_EXPRESS
+
 // Functions in tablegen.cpp
 extern void            calcDisplacement(void);
 extern void            calcMap(void);