joystick interface now works with arbitrary joystick axes

code now scans all available axes for changes, then selects the first
two as X and Y, rather than relying on joysticks to have X and Y at 0
and 1.

USB_Joystick/Arduino/USBHIDJoystick_calibrated/USBHIDJoystick_calibrated.ino

@@ -2,11 +2,9 @@
 
 #include <SPI.h>
 
-// set pin 4 as the slave select for the digital pot:
-const int slaveSelectPin = A0;  //4;
-//const float foo = .21;
+// set pin A0 as the slave select for the digital pot:
+const int slaveSelectPin = A0;
 const int TrimPin = A3;
-
 const int Butt0Pin = A4;
 const int Butt1Pin = A5;
 
@@ -41,17 +39,12 @@ void setup()
 {
   // set the slaveSelectPin as an output:
   pinMode (slaveSelectPin, OUTPUT);
-  
-
   pinMode (Butt0Pin, OUTPUT);
   pinMode (Butt1Pin, OUTPUT);
 
-  
   // initialize SPI:
   SPI.begin(); 
 
-
-
   Serial.begin( 115200 );
   Serial.println("Start");
 
@@ -63,41 +56,36 @@ void setup()
   if (!Hid.SetReportParser(0, &Joy))
       ErrorMessage<uint8_t>(PSTR("SetReportParser"), 1  ); 
 
-
-
-
 }
 
 void loop()
 {
     Usb.Task();
+    int channelX = 5;
+    int channelY = 3;
 
-    float foo = float(analogRead(TrimPin))/1023.000;
-
+    float calibrate = float(analogRead(TrimPin))/1023.000;
 
+    // need to determine if x or x2 is giving values
     int joyX = JoyEvents.X;
-    int channel = 5;
-
-      digitalPotWrite(channel, joyX * foo);
-      digitalPotWrite(channel - 1, joyX * foo);
     
+    // need to determine if y or y2 is giving values
     int joyY = JoyEvents.Y;
-     channel = 3;
-
-      digitalPotWrite(channel, joyY * foo);
-      digitalPotWrite(channel - 1, joyY * foo);
  
  
+    // write the values to the POTs
+      digitalPotWrite(channelX, joyX * calibrate);
+      digitalPotWrite(channelX - 1, joyX * calibrate);
+
+      digitalPotWrite(channelY, joyY * calibrate);
+      digitalPotWrite(channelY - 1, joyY * calibrate);
+
+    // write the buttons
     digitalWrite(Butt0Pin,JoyEvents.Butt0);
     digitalWrite(Butt1Pin,JoyEvents.Butt1);
 
-    
-
-
 }
 
-
-
 void digitalPotWrite(int address, int value) {
   // take the SS pin low to select the chip:
   digitalWrite(slaveSelectPin,LOW);

USB_Joystick/Arduino/USBHIDJoystick_calibrated/hidjoystickrptparser.cpp

@@ -1,12 +1,7 @@
-
-
-
-
 #include "hidjoystickrptparser.h"
 
 JoystickReportParser::JoystickReportParser(JoystickEvents *evt) :
 	joyEvents(evt),
-	oldHat(0xDE),
 	oldButtons(0)
 {
 	for (uint8_t i=0; i<RPT_GEMEPAD_LEN; i++)
@@ -41,7 +36,8 @@ void JoystickReportParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t
 	// Calling Button Event Handler for every button changed
 	if (changes)
 	{
-		for (uint8_t i=0; i<0x0C; i++)
+//		for (uint8_t i=0; i<0x0C; i++) // 12 buttons 0x0C == 12
+		for (uint8_t i=0; i<0x0F; i++) // up to 16 buttons 
 		{
 			uint16_t mask = (0x0001 << i);
 
@@ -57,18 +53,71 @@ void JoystickReportParser::Parse(HID *hid, bool is_rpt_id, uint8_t len, uint8_t
 
 void JoystickEvents::OnGamePadChanged(const GamePadEventData *evt)
 {
+  // got to find a better way to make an array from this structured vars
+  axes[0] =  evt->axis0; 
+  axes[1] =  evt->axis1; 
+  axes[2] =  evt->axis2; 
+  axes[3] =  evt->axis3; 
+  axes[4] =  evt->axis4; 
 
-X = evt->X;
-Y = evt->Y;
-  	Serial.print("X: ");
-  	Serial.print(X);
-	//PrintHex<uint8_t>(evt->X, 0x80);
-	Serial.print("\tY: ");
-	Serial.print(Y);
-//	PrintHex<uint8_t>(evt->Y, 0x80);
-	Serial.println("");
 
   
+  if(initialized) {
+  
+  
+    for(int i =0; i<5 ; i++ ){   
+      
+      if (axes[i] < axesMin[i] ) {
+        axesMin[i] = axes[i];
+      }
+      
+      if (axes[i] > axesMax[i]) {
+        axesMax[i] = axes[i];
+      }
+      
+      axesDelta[i] = axesMax[i] - axesMin[i]; 
+
+    }
+  
+
+      for(int j =0; j<5 ; j++ ){   
+      
+        if(axesDelta[j] > 0) {
+          X = axes[j];
+          Y = axes[j+1];
+          break;
+        }
+        
+      }
+
+
+  } else {
+
+    for(int i =0; i<5 ; i++ ){         
+        axesMin[i] = axes[i];
+        axesMax[i] = axes[i];
+    }
+    
+    initialized = true;
+    // don't bother with the first set of data, as joystick initializes.
+    
+  }
+
+Serial.print(X);
+Serial.print("   ");
+Serial.println(Y);
+
+
+/*
+  
+keep track of axes 0 - 4 (5 axes)
+
+min and max values. max-min = range
+
+first axis with range, and first +1 are X and Y
+
+*/
+
 }
 
 
@@ -76,11 +125,11 @@ void JoystickEvents::OnButtonUp(uint8_t but_id)
 {
 	Serial.print("Up: ");
 	Serial.println(but_id);
-      if(but_id == 1) {
+      if(but_id % 2 == 0) { // all even numbered buttons = button 0
         Butt0 = false;
       }
 
-      if(but_id == 2) {
+      if(but_id % 2 == 1) { // all odd buttons = button 1
         Butt1 = false;
       }
 
@@ -92,11 +141,11 @@ void JoystickEvents::OnButtonDn(uint8_t but_id)
 	Serial.println(but_id);
 
 
-      if(but_id == 1) {
+      if(but_id % 2 == 0) { // all even numbered buttons = button 0
         Butt0 = true;
       }
 
-      if(but_id == 2) {
+      if(but_id % 2 == 1) { // all odd buttons = button 1
         Butt1 = true;
       }
 }

USB_Joystick/Arduino/USBHIDJoystick_calibrated/hidjoystickrptparser.h

@@ -23,7 +23,7 @@
 
 struct GamePadEventData
 {
-	uint8_t X, Y;
+	uint8_t axis0, axis1, axis2, axis3, axis4; // read first 5 axes
 };
 
 class JoystickEvents
@@ -36,6 +36,18 @@ public:
 uint8_t X;
 uint8_t Y;
 
+int axes[5];
+int axesMin[5];
+int axesMax[5];
+int axesDelta[5];
+
+int activeX;
+int activeY;
+//arrays of min and max values
+// var with which axis is X/Y
+
+boolean initialized;
+
 boolean Butt0;
 boolean Butt1;
 
@@ -48,7 +60,6 @@ class JoystickReportParser : public HIDReportParser
 	JoystickEvents		*joyEvents;
 
 	uint8_t				oldPad[RPT_GEMEPAD_LEN];
-	uint8_t				oldHat;
 	uint16_t			oldButtons;
 
 public: