Added USBMouse sketch which allows you to communicate with a USB Mouse

USBMouse/USBMouse.pde

@@ -1,99 +1,131 @@
 /**
- * Arduino sketche to read button press from a USB mouse
+ * Comunicate with a USB Mouse via interrupt endpoint.
+ * You need a USB Host Shield, USB Mouse and an Arduino board
+ * You also need the USB_Host_Shield library available at https://github.com/felis/USB_Host_Shield 
  *
- * Connect your USB Host shield
- * Based on the examples from USB Host Shield by Circuits @ home
+ * (Assumes EP1 as interrupt IN ep)
+ *
+ * Code based on the sketch by Circuits @ home - http://www.circuitsathome.com/communicating-arduino-with-hid-devices-part-1
  */
-
-//#include <Spi.h>
+
 #include <Max3421e.h>
 #include <Usb.h>
 
 #define DEVADDR 1
 #define CONFVALUE 1
-
-#define ftl(x) ((x)>=0?(long)((x)+0.5):(long)((x)-0.5))  //float to long conversion
-
+#define EP_MAXPKTSIZE 5
+EP_RECORD ep_record[ 2 ];  //endpoint record structure for the mouse  
+ 
 void setup();
 void loop();
 
 MAX3421E Max;
 USB Usb;
-
+ 
 void setup() {
-  Max.powerOn();
-  Serial.begin( 9600 );
-  Serial.println("Start");
-  delay( 500 );
+    Serial.begin( 115200 );
+    Serial.println("Start");
+    Max.powerOn();
+    delay( 200 );
 }
-
+ 
 void loop() {
     byte rcode;
-    //delay( 10 );
     Max.Task();
     Usb.Task();
-    
-    if( Usb.getUsbTaskState() == USB_STATE_CONFIGURING ) {  
-        mouse_init();
+
+    if( Usb.getUsbTaskState() == USB_STATE_CONFIGURING ) {
+        mouse1_init();
     }//if( Usb.getUsbTaskState() == USB_STATE_CONFIGURING...
-    
-    if( Usb.getUsbTaskState() == USB_STATE_RUNNING ) {  //poll the keyboard  
-        rcode = mouse_poll();
+
+    if( Usb.getUsbTaskState() == USB_STATE_RUNNING ) {  //poll the mouse
+        rcode = mouse1_poll();
         if( rcode ) {
-          Serial.print("Mouse Poll Error: ");
-          Serial.println( rcode, HEX );
+            Serial.print("Mouse Poll Error: ");
+            Serial.println( rcode, HEX );
         }//if( rcode...
     }//if( Usb.getUsbTaskState() == USB_STATE_RUNNING...
 }
 
 /* Initialize mouse */
-void mouse_init( void ) {
-  Serial.println("Mouse Init");
- byte rcode = 0;  //return code
-  /**/
-  Usb.setDevTableEntry( 1, Usb.getDevTableEntry( 0,0 ) );              //copy device 0 endpoint information to device 1
-  /* Configure device */
-  rcode = Usb.setConf( DEVADDR, 0, CONFVALUE );                    
-  if( rcode ) {
-    Serial.print("Error configuring mouse. Return code : ");
-    Serial.println( rcode, HEX );
-    while(1);  //stop
-  }//if( rcode...
-  Usb.setUsbTaskState( USB_STATE_RUNNING );
-  return;
-}
+void mouse1_init( void ) {
+    byte rcode = 0;  //return code
+    byte tmpdata;
+    byte* byte_ptr = &tmpdata;
+
+    /**/
+    ep_record[ 0 ] = *( Usb.getDevTableEntry( 0,0 ));  //copy endpoint 0 parameters
+    ep_record[ 1 ].MaxPktSize = EP_MAXPKTSIZE;
+    ep_record[ 1 ].sndToggle = bmSNDTOG0;
+    ep_record[ 1 ].rcvToggle = bmRCVTOG0;
+    Usb.setDevTableEntry( 1, ep_record );              //plug kbd.endpoint parameters to devtable
 
-/* Poll mouse using Get Report and fill arm data structure */
-byte mouse_poll( void ) {
-  Serial.println("Mouse poll");  
-  byte rcode;
-  char buf[ 4 ];                //mouse buffer
-  static uint16_t delay = 500;  //delay before park
+    /* Configure device */
+    rcode = Usb.setConf( DEVADDR, 0, CONFVALUE );
+    if( rcode ) {
+        Serial.print("Error configuring mouse. Return code : ");
+        Serial.println( rcode, HEX );
+        while(1);  //stop
+    }//if( rcode...
 
+    rcode = Usb.getIdle( DEVADDR, 0, 0, 0, (char *)byte_ptr );
+    if( rcode ) {
+        Serial.print("Get Idle error. Return code : ");
+        Serial.println( rcode, HEX );
+        while(1);  //stop
+    }
+
+    Serial.print("Idle Rate: ");
+    Serial.print(( tmpdata * 4 ), DEC );        //rate is returned in multiples of 4ms
+    Serial.println(" ms");
+
+    tmpdata = 0;
+    rcode = Usb.setIdle( DEVADDR, 0, 0, 0, tmpdata );
+    if( rcode ) {
+        Serial.print("Set Idle error. Return code : ");
+        Serial.println( rcode, HEX );
+        while(1);  //stop
+    }
+
+    Usb.setUsbTaskState( USB_STATE_RUNNING );
+    return;
+}
+
+/* Poll mouse via interrupt endpoint and print result */
+/* assumes EP1 as interrupt endpoint                  */
+byte mouse1_poll( void ) {
+    byte rcode,i;
+    char buf[ 4 ] = { 0 };                          //mouse report buffer
     /* poll mouse */
-    rcode = Usb.getReport( DEVADDR, 0, 4, 0, 1, 0, buf );
+    rcode = Usb.inTransfer( DEVADDR, 1, 4, buf, 1 );  //
+
     if( rcode ) {  //error
-      return( rcode );
+        if( rcode == 0x04 ) {  //NAK
+            rcode = 0;
+        }
+        return( rcode );
+    }
+
+    /* print buffer */
+    if( buf[ 0 ] & 0x01 ) {
+        Serial.println("Button1 pressed ");
     }
-
-    Serial.println("buffer value");
-    Serial.println(buf[0]);
-
-    switch( buf[ 0 ] ) {  //read buttons
-      case 0x00:            //no buttons pressed
-        // armdata.z_coord += ( buf[ 3 ] * -2 ) ;
-        break;
-      case 0x01:            //button 1 pressed. 
-        Serial.println("Button 1 is pressed");
-        break;
-      case 0x02:           //button 2 pressed. 
-        Serial.println("Button 2 is pressed");
-        break;
-      case 0x04:          //wheel button pressed. 
-        Serial.println("Wheel button is pressed");
-        break;
-      case 0x07:          //all 3 buttons pressed.
-        Serial.println("All 3 button is pressed");
-        break;        
-    }//switch( buf[ 0 ...
+    if( buf[ 0 ] & 0x02 ) {
+        Serial.println("Button2 pressed ");
+    }
+    if( buf[ 0 ] & 0x04 ) {
+        Serial.println("Button3 pressed ");
+    }
+
+    /* This will print the x,y and wheel co-ordinates as well
+    Serial.println("");
+    Serial.print("X-axis: ");
+    Serial.println( buf[ 1 ], DEC);
+    Serial.print("Y-axis: ");
+    Serial.println( buf[ 2 ], DEC);
+    Serial.print("Wheel: ");
+    Serial.println( buf[ 3 ], DEC);
+    Serial.println("");
+    */
+    return( rcode );
 }