From e0d0c775716803c35ab0800692c2009004c681c6 Mon Sep 17 00:00:00 2001
From: Guillaume Riou <guiloua2@hotmail.com>
Date: Mon, 31 Mar 2014 13:16:47 -0400
Subject: First commit.

---
 squelette_synth_midi.ino | 97 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 squelette_synth_midi.ino

diff --git a/squelette_synth_midi.ino b/squelette_synth_midi.ino
new file mode 100644
index 0000000..963101a
--- /dev/null
+++ b/squelette_synth_midi.ino
@@ -0,0 +1,97 @@
+#include <MIDI.h>
+#include <MozziGuts.h>
+#include <Oscil.h>
+#include <mozzi_midi.h>
+#include <mozzi_fixmath.h>
+#include <tables/saw256_int8.h>
+#include <tables/sin256_int8.h>
+#include <ADSR.h>
+#include <LowPassFilter.h>
+
+#define CONTROL_RATE 256
+
+int tableChange =0;
+Oscil <SAW256_NUM_CELLS, AUDIO_RATE> nco(SAW256_DATA), nco_det(SAW256_DATA);
+Oscil <SIN256_NUM_CELLS, CONTROL_RATE> lfo(SIN256_DATA);
+ADSR <CONTROL_RATE> adsr;
+int noteOnn = 1;
+float lastFreq = 0.0;
+int noteOnBuffer[4];
+int bufferIndex = 0;
+LowPassFilter lpf;
+
+void handleNoteOn(byte channel, byte note, byte velocity){
+  //If velocity is 0, the noteOn message is equivalent to a noteOff message.
+  if(velocity == 0){
+    handleNoteOff(channel,note,velocity);
+    return;
+  }
+  
+  for(int i = 3; i> 0 ; i --){
+    noteOnBuffer[i] = noteOnBuffer[i-1];
+  }
+  
+  noteOnBuffer[0] = note;
+  jouerNote(note);
+}
+
+void jouerNote(byte note){
+  noteOnn = 1;
+  lastFreq = mtof(note);
+  nco.setFreq(lastFreq);
+  
+  adsr.noteOn();
+}
+
+void handleNoteOff(byte channel, byte note, byte velocity){
+ int i =0;
+ while(i<3 && noteOnBuffer[i] != note){
+   i ++;
+ }
+ while(i < 3){
+   noteOnBuffer[i] = noteOnBuffer[i+1];
+   i+=1;
+ }
+ if(i < 4){
+   noteOnBuffer[3] = -1;
+ }
+ if(noteOnBuffer[0] != -1){
+   jouerNote(noteOnBuffer[0]);
+ }else{
+   noteOnn = 0;
+   adsr.noteOff();
+ }
+}
+
+void setup(){
+  MIDI.setHandleNoteOn(handleNoteOn);
+  MIDI.setHandleNoteOff(handleNoteOff);
+  nco.setFreq(400);
+  startMozzi(CONTROL_RATE);
+  MIDI.begin();
+  lfo.setFreq(1);
+  for(int i = 0; i<3; i++){
+    noteOnBuffer[i] = -1;
+  }
+  adsr.setADLevels(255,210);
+  adsr.setTimes(188,345,65000,345);
+  adsr.setSustainLevel(255);
+  lpf.setResonance(156);
+}
+
+void updateControl(){
+  int lfoNext = lfo.next();
+  nco_det.setFreq(lastFreq+(lfoNext*0.02f));
+  MIDI.read();
+  adsr.update();
+  lpf.setCutoffFreq(255*adsr.next()>>8);
+}
+
+int updateAudio(){
+  //adsr.next();
+  return (int)(adsr.next()*(lpf.next((nco.next()+nco_det.next())>>2)))>>4;
+}
+
+void loop(){
+  audioHook();
+}
-- 
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