From a76859c22f7a8dc9bbb3ca82cc1a0916e1b44dea Mon Sep 17 00:00:00 2001
From: Lukas <lukas@haubaum.de>
Date: Tue, 12 Feb 2013 10:01:45 +0100
Subject: [PATCH] first sketch

---
 .../testing/midi_in_out_softwareserial.ino    | 92 +++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 sketches/testing/midi_in_out_softwareserial.ino

diff --git a/sketches/testing/midi_in_out_softwareserial.ino b/sketches/testing/midi_in_out_softwareserial.ino
new file mode 100644
index 0000000..3020219
--- /dev/null
+++ b/sketches/testing/midi_in_out_softwareserial.ino
@@ -0,0 +1,92 @@
+#include <SoftwareSerial.h>
+
+// RX, TX for MIDI out
+SoftwareSerial MIDI(10, 11); 
+
+//button pin
+const int switchPin = 6;
+//rotary encoder pins
+const int encAPin = 4;
+const int encBPin = 5;
+
+//for sending note-off once after button is released
+boolean btnOff = false;
+
+//old rotary encoder value
+int encA = LOW;
+//read rotary encoder value
+int enc = HIGH;
+
+void setup()  
+{
+  //printing baudrate
+  Serial.begin(9600);
+  //MIDI baudrate for software serial (pin 10 & 11)
+  MIDI.begin(31250);
+  //button and encoder pins as input
+  pinMode(switchPin, INPUT);
+  pinMode(encAPin, INPUT);
+  pinMode(encBPin, INPUT);
+  //activate pullup-resistors (read value is inverted, so LOW is active)
+  digitalWrite(switchPin, HIGH);
+  digitalWrite(encAPin, HIGH);
+  digitalWrite(encBPin, HIGH);
+}
+
+void loop() // run over and over
+{
+  //print incoming bytes on softwareserial, just for checking MIDI-in, worked
+  if (MIDI.available())
+    Serial.println(MIDI.read());
+  
+  //check if button is pressed
+  if (digitalRead(switchPin) == LOW)
+  {  
+    if (!btnOff) {
+      //send note on
+      midiSignal(144,60,100);
+      btnOff = true;
+    }
+  }  
+  if (digitalRead(switchPin) == HIGH)
+    {
+    //send note off
+    if (btnOff) {
+        midiSignal(128,60,0);
+        btnOff = false;
+    }
+  }
+  
+  //read encoder pin A
+  enc = digitalRead(encAPin);
+  //check if rotary encoder is turned
+  if ((encA == HIGH) && (enc == LOW)) {
+      //check direction of turning
+      if (digitalRead(encBPin) == HIGH) {
+         //send note on and note off directly, so signal is send on every turn 
+         midiSignal(144,62,100);
+         midiSignal(128,62,100);
+       } else {
+         //other direction, other note value
+         midiSignal(144,61,100);
+         midiSignal(128,61,100);
+       }
+   } 
+   //save "old" encoder value
+   encA = enc;
+}
+
+//send MIDI signal through softwareserial
+void midiSignal(byte b1, byte b2, byte b3) {
+  //debug printing
+  Serial.print("send: ");
+  Serial.print(b1);
+  Serial.print(" | ");
+  Serial.print(b2);
+  Serial.print(" | ");
+  Serial.print(b3);
+  Serial.println("");
+  MIDI.write(b1);
+  MIDI.write(b2);
+  MIDI.write(b2);
+}