Merge pull request #3 from kibab/kibab

Arduino Mega ADK support in USB Host Shield 2.0 library

Usb.h

@@ -49,6 +49,8 @@ e-mail   :  support@circuitsathome.com
 
 #ifdef BOARD_BLACK_WIDDOW
 typedef MAX3421e<P6, P3>		MAX3421E;		// Black Widow
+#elif defined(BOARD_MEGA_ADK)
+typedef MAX3421e<P53, P54>              MAX3421E;               // Arduino Mega ADK
 #else
 typedef MAX3421e<P10, P9>		MAX3421E;		// Official Arduinos (UNO, Duemilanove, Mega, 2560
 #endif

avrpins.h

@@ -20,6 +20,9 @@ e-mail   :  support@circuitsathome.com
 #ifndef _avrpins_h_
 #define _avrpins_h_
 
+/* Uncomment the following if you have Arduino Mega ADK board with MAX3421e built-in */
+//#define BOARD_MEGA_ADK
+
 #include <avr/io.h>
 
 #ifdef PORTA
@@ -465,6 +468,7 @@ template<typename Tp_pin, typename Tc_bit>
 #define P51 Pb2
 #define P52 Pb1
 #define P53 Pb0
+#define P54 Pj2
 
 #endif  //"Mega" pin numbers
 

usbhost.h

@@ -87,6 +87,12 @@ MAX3421e< SS, INTR >::MAX3421e()
   spi::init();
   INTR::SetDirRead();
 
+#ifdef BOARD_MEGA_ADK  
+  /* For Mega ADK, which has Max3421e on-board, set MAX_RESET to Output mode, and pull Reset to HIGH */
+  DDRJ |= 0x04;
+  PORTJ |= 0x04;
+#endif
+
   /* MAX3421E - full-duplex SPI, level interrupt */
   regWr( rPINCTL,( bmFDUPSPI + bmINTLEVEL ));
 };