added a deadzone to the analogue sticks

ps2-arduino.ino

@@ -26,6 +26,9 @@ byte waitTick = 0;
 char waitTextOutput[32];
 bool isControllerConnected;
 
+int lx, ly, rx, ry;
+int deadzone = 20;
+
 void setup() {
   Serial.begin(57600);
   delay(300);
@@ -46,8 +49,6 @@ void setup() {
 void loop() {
   if (!(error == 0 && type == 0)) {
     checkControllerConnection();
-
-    
     delay(50);
     return;
   }
@@ -204,10 +205,22 @@ void loop() {
   }
 
   // Left stick
-  XInput.setJoystick(JOY_LEFT, ps2x.Analog(PSS_LX), 255 - ps2x.Analog(PSS_LY));
+  lx = ps2x.Analog(PSS_LX) - 128;
+  ly = 127 - ps2x.Analog(PSS_LY);
+  if (lx < deadzone && lx > -deadzone && ly < deadzone && ly > -deadzone) {
+    lx = 0;
+    ly = 0;
+  }
+  XInput.setJoystick(JOY_LEFT, lx, ly);
 
   // Right stick
-  XInput.setJoystick(JOY_RIGHT, ps2x.Analog(PSS_RX), 255 - ps2x.Analog(PSS_RY));
+  rx = ps2x.Analog(PSS_RX) - 128;
+  ry = 127 - ps2x.Analog(PSS_RY);
+  if (rx < deadzone && rx > -deadzone && ry < deadzone && ry > -deadzone) {
+    rx = 0;
+    ry = 0;
+  }
+  XInput.setJoystick(JOY_RIGHT, rx, ry);
 }
 
 void checkControllerConnection() {
@@ -219,8 +232,8 @@ void checkControllerConnection() {
     case 0:
       type = ps2x.readType();
       if (type == 0) {
-        display.write("Found\nDualShock 2!");
-        XInput.setJoystickRange(0, 255);
+        display.write("DualShock\n2\nconnected!");
+        XInput.setJoystickRange(-128, 127);
       } else {
         display.write("Controller\nnot\nrecognised");
       }