soso

soundcube-firmware/soundcube-firmware.ino

@@ -1,23 +1,52 @@
 #include <TCA9555.h>
 #include <Adafruit_NeoPixel.h>
+#include <PWMAudio.h>
+#include <I2S.h>
 
-#define HAPTIC 0
+#define HAPTIC 1
+#define AURAL 1
+#define UI_SAMPLERATE 22050
+
+I2S i2s(INPUT_PULLUP);
 
 TCA9555 TCA(0x20, &Wire1);
 
-//PWMAudio ui_snd(8);
+PWMAudio ui_snd(8);
 
 Adafruit_NeoPixel edge_pixels(8, 4, NEO_GRB + NEO_KHZ800);
 Adafruit_NeoPixel ui_pixels(72, 5, NEO_GRB + NEO_KHZ800);
 
 volatile bool flag = false;
+volatile bool click = false;
+volatile bool amp = false;
 
-void tca_irq()
-{
+int counter = 0;
+
+int16_t beep[UI_SAMPLERATE];
+
+void pwm_audio_callback() {
+    while (ui_snd.availableForWrite()) {
+      if(click) {
+        ui_snd.write(beep[counter]);
+      } else {
+        ui_snd.write(0);
+      }
+      counter++;
+      if(counter == UI_SAMPLERATE) counter = 0;
+    }
+}
+
+void tca_irq() {
   flag = true;
 }
 
 void setup() {
+
+  for(int i = 0; i < UI_SAMPLERATE; i++){
+    float sine_pos = (2.0f * M_PI * 8000.0f * (float)i) / (float)UI_SAMPLERATE;
+    beep[i] = (int16_t)(sin(sine_pos) * 8000.0f);
+  }
+
   Serial.begin();
   delay(2000);
 
@@ -41,10 +70,29 @@ void setup() {
   pinMode(6, OUTPUT);  // Vibration Motor
   pinMode(7, OUTPUT);  // UI Amp Enable
 
-  //ui_snd.begin(44100);
+  ui_snd.onTransmit(pwm_audio_callback);
+  ui_snd.begin(UI_SAMPLERATE);
+
+  digitalWrite(7, LOW);
 
   edge_pixels.begin();  // INITIALIZE NeoPixel strip object (REQUIRED)
   ui_pixels.begin();    // INITIALIZE NeoPixel strip object (REQUIRED)
+  
+  i2s.setDOUT(14);
+  i2s.setDIN(15);
+  i2s.setBCLK(16); // 
+  i2s.swapClocks();
+  i2s.setMCLK(18);
+  i2s.setBitsPerSample(16);
+  i2s.setFrequency(48000);
+  i2s.setSysClk(48000)
+  i2s.begin();
+
+  while (1) {
+    int16_t l, r;
+    i2s.read16(&l, &r);
+    i2s.write16(l, r);
+  }
 }
 
 void loop() {
@@ -57,7 +105,16 @@ void loop() {
     flag = false;
     if (HAPTIC) {
       digitalWrite(6, HIGH);
+    }
+    if (AURAL) {
+      digitalWrite(7, HIGH);
+      click = true;
       delay(50);
+      click = false;
+      digitalWrite(7, LOW);
+    }
+    if(HAPTIC){
+      if(!AURAL) delay(50);
       digitalWrite(6, LOW);
     }
   }
@@ -86,5 +143,6 @@ void loop() {
 
   edge_pixels.show();  // Set all pixel colors to 'off'
   ui_pixels.show();    // Set all pixel colors to 'off'
+
   delay(1);
 }