From da6cd494c78fae6073756da49d421608d4a5bf12 Mon Sep 17 00:00:00 2001
From: Jorge Lopez Seijas <jorginho@riseup.net>
Date: Sun, 19 Feb 2017 23:34:42 +0100
Subject: Add arduino source code compatible with X Y axis and 9 buttons

---
 arduino/arduino.ino | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 arduino/arduino.ino

diff --git a/arduino/arduino.ino b/arduino/arduino.ino
new file mode 100644
index 0000000..1dece85
--- /dev/null
+++ b/arduino/arduino.ino
@@ -0,0 +1,67 @@
+#include <Key.h>
+#include <Keypad.h>
+
+#include <Joystick.h>
+
+const byte ROWS = 3;
+const byte COLS = 3;
+
+char buttons[ROWS][COLS] = {
+  { '0' , '1', '2' },
+  { '3' , '4', '5' },
+  { '6' , '7', '8' }
+};
+
+byte rowPins[ROWS] = { 2, 3, 4 };
+byte colPins[COLS] = { 5, 6, 7 };
+
+Keypad buttonsPad = Keypad( makeKeymap(buttons), rowPins, colPins, ROWS, COLS );
+
+const int XYPadPins[2] = { A0, A1 }; 
+
+void setup() {
+  Joystick.begin();
+}
+
+float convertAnalogRange(float x, float in_min, float in_max, float out_min, float out_max, bool isDPad)
+{
+  if(isDPad && x != in_min && x != in_max)
+  {
+    return 0;
+  }
+  
+  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+
+void gamepad(){
+  if(buttonsPad.getKeys())
+  {
+    for(int i = 0; i < LIST_MAX; i++)
+    {
+      if(buttonsPad.key[i].stateChanged)
+      {
+        switch (buttonsPad.key[i].kstate) 
+        {
+          case PRESSED:
+            Joystick.setButton(i, 1);
+            break;
+          case RELEASED:
+            Joystick.setButton(i, 0);
+            break;  
+        }
+      }
+    }
+  }
+
+  float value = analogRead(XYPadPins[0]);
+  value = convertAnalogRange(value, 0, 1023, -127, 127, true);
+  Joystick.setXAxis(value);
+
+  value = value = analogRead(XYPadPins[1]);
+  value = convertAnalogRange(analogRead(A1), 0, 1023, -127, 127, true);
+  Joystick.setYAxis(value);
+}
+
+void loop() {
+  gamepad();
+}
-- 
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