Added CV and Gate outputs via 2x i2c MCP4725 modules

CV.ino

@@ -0,0 +1,62 @@
+float noteToVoltage(uint8_t note) {
+  float voltage = (note - 24) * 0.083;
+  return voltage;
+}
+
+void sendCVNote(uint8_t note, uint8_t track) {
+  if (track == 0 && note != CV1Note) {
+    CV1Note = note;
+    updateCV1 = true;
+  }
+  if (track == 1 && note != CV2Note) {
+    CV2Note = note;
+    updateCV2 = true;
+  }
+}
+
+void sendGateOn(uint8_t track) {
+  if (track == 0) {
+    sendGate1 = true;
+  }
+  if (track == 1) {
+    sendGate2 = true;
+  }
+}
+
+void sendGateOff(uint8_t track) {
+  if (track == 0) {
+    sendGate1 = false;
+  }
+  if (track == 1) {
+    sendGate2 = false;
+  }
+}
+
+void sendVoltage(uint8_t voltage, uint8_t dac) {
+  if (dac == 0) {
+    DAC1.setVoltage(voltage);
+  } else {
+    DAC2.setVoltage(voltage);
+  }
+}
+
+void processCV() {
+  if (updateCV1) {
+    sendVoltage(noteToVoltage(CV1Note), 0);
+    updateCV1 = false;
+  }
+  if (updateCV2) {
+    //sendVoltage(noteToVoltage(CV2Note), 1);
+    //updateCV2 = false;
+  }
+  if (sendGate1) {
+    sendVoltage(5, 1);
+  } else {
+    sendVoltage(0, 1);
+  }
+  if (sendGate2) {
+    //sendVoltage(5, 1);
+  } else {
+    //sendVoltage(0, 1);
+  }
+}