Added support for the Intel Galileo

Still not tested

Usb.h

@@ -26,12 +26,12 @@ e-mail   :  support@circuitsathome.com
 // None of these should ever be included by a driver, or a user's sketch.
 #include "settings.h"
 #include "printhex.h"
+#include "avrpins.h"
 #include "message.h"
 #include "hexdump.h"
 #include "sink_parser.h"
 #include "max3421e.h"
 #include "address.h"
-#include "avrpins.h"
 #include "usb_ch9.h"
 #include "usbhost.h"
 #include "UsbCore.h"

UsbCore.h

@@ -38,7 +38,7 @@ typedef MAX3421e<P53, P54> MAX3421E; // Arduino Mega ADK
 #elif defined(ARDUINO_AVR_BALANDUINO)
 typedef MAX3421e<P20, P19> MAX3421E; // Balanduino
 #else
-typedef MAX3421e<P10, P9> MAX3421E; // Official Arduinos (UNO, Duemilanove, Mega, 2560, Leonardo, Due etc.) or Teensy 2.0 and 3.0
+typedef MAX3421e<P10, P9> MAX3421E; // Official Arduinos (UNO, Duemilanove, Mega, 2560, Leonardo, Due etc.), Intel Galileo or Teensy 2.0 and 3.0
 #endif
 
 /* Common setup data constant combinations  */

avrpins.h

@@ -747,9 +747,7 @@ public:
 
 #endif // Arduino pin definitions
 
-#endif // __AVR__
+#elif defined(__arm__)
-
-#if defined(__arm__)
 
 // pointers are 32 bits on ARM
 #define pgm_read_pointer(p) pgm_read_dword(p)
@@ -950,6 +948,53 @@ MAKE_PIN(P78, PIOB, PIO_PB23); // Unconnected
 
 #endif
 
-#endif // __arm__
+#elif defined(__ARDUINO_X86__)
+
+#include <avr/pgmspace.h>
+
+// Pointers are 32 bits on x86
+#define pgm_read_pointer(p) pgm_read_dword(p)
+
+#define MAKE_PIN(className, pin) \
+class className { \
+public: \
+  static void Set() { \
+    digitalWrite(pin, HIGH); \
+  } \
+  static void Clear() { \
+    digitalWrite(pin, LOW); \
+  } \
+  static void SetDirRead() { \
+    pinMode(pin, INPUT); \
+  } \
+  static void SetDirWrite() { \
+    pinMode(pin, OUTPUT); \
+  } \
+  static uint8_t IsSet() { \
+    return digitalRead(pin); \
+  } \
+};
+
+MAKE_PIN(P0, 0);
+MAKE_PIN(P1, 1);
+MAKE_PIN(P2, 2);
+MAKE_PIN(P3, 3);
+MAKE_PIN(P4, 4);
+MAKE_PIN(P5, 5);
+MAKE_PIN(P6, 6);
+MAKE_PIN(P7, 7);
+MAKE_PIN(P8, 8);
+MAKE_PIN(P9, 9);
+MAKE_PIN(P10, 10);
+MAKE_PIN(P11, 11);
+MAKE_PIN(P12, 12);
+MAKE_PIN(P13, 13);
+
+#undef MAKE_PIN
+
+#else
+#error "Please define board in avrpins.h"
+
+#endif
 
 #endif // _avrpins_h_

settings.h

@@ -137,8 +137,8 @@ e-mail   :  support@circuitsathome.com
 #define USING_SPI4TEENSY3 0
 #endif
 
-#if ((defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)) || ARDUINO >= 158) && !USING_SPI4TEENSY3
+#if ((defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)) || defined(__ARDUINO_X86__) || ARDUINO >= 158) && !USING_SPI4TEENSY3
-#include <SPI.h> // Use the Arduino SPI library for the Arduino Due or if the SPI library with transaction is available
+#include <SPI.h> // Use the Arduino SPI library for the Arduino Due, Intel Galileo or if the SPI library with transaction is available
 #endif
 
 #endif  /* SETTINGS_H */

usbhost.h

@@ -43,12 +43,16 @@ public:
                 SPI_SS::SetDirWrite();
                 SPI_SS::Set();
         }
-#elif defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)
+#elif (defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)) || defined(__ARDUINO_X86__)
         static void init() {
                 SPI_SS::SetDirWrite();
                 SPI_SS::Set();
                 SPI.begin();
+#ifdef __ARDUINO_X86__
+                SPI.setClockDivider(SPI_CLOCK_DIV2); // This will set the SPI frequency to 8MHz - it could be higher, but it is not supported in the API
+#else
                 SPI.setClockDivider(4); // Set speed to 84MHz/4=21MHz - the MAX3421E can handle up to 26MHz
+#endif
         }
 #else
         static void init() {
@@ -78,6 +82,8 @@ typedef SPi< Pb7, Pb5, Pb6, Pb4 > spi;
 typedef SPi< P13, P11, P12, P10 > spi;
 #elif defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)
 typedef SPi< P76, P75, P74, P10 > spi;
+#elif defined(__ARDUINO_X86__)
+typedef SPi< P13, P11, P12, P10 > spi;
 #else
 #error "No SPI entry in usbhost.h"
 #endif
@@ -148,7 +154,7 @@ void MAX3421e< SPI_SS, INTR >::regWr(uint8_t reg, uint8_t data) {
         c[0] = reg | 0x02;
         c[1] = data;
         spi4teensy3::send(c, 2);
-#elif defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)
+#elif (defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)) || defined(__ARDUINO_X86__)
         SPI.transfer(reg | 0x02);
         SPI.transfer(data);
 #else
@@ -184,13 +190,17 @@ uint8_t* MAX3421e< SPI_SS, INTR >::bytesWr(uint8_t reg, uint8_t nbytes, uint8_t*
         spi4teensy3::send(reg | 0x02);
         spi4teensy3::send(data_p, nbytes);
         data_p += nbytes;
-#elif defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)
+#elif (defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__))
         SPI.transfer(reg | 0x02);
         while(nbytes) {
                 SPI.transfer(*data_p);
                 nbytes--;
                 data_p++; // advance data pointer
         }
+#elif defined(__ARDUINO_X86__)
+        SPI.transfer(reg | 0x02);
+        SPI.transferBuffer(data_p, NULL, nbytes);
+        data_p += nbytes;
 #else
         SPDR = (reg | 0x02); //set WR bit and send register number
         while(nbytes) {
@@ -230,7 +240,7 @@ uint8_t MAX3421e< SPI_SS, INTR >::regRd(uint8_t reg) {
 #endif
         SPI_SS::Clear();
 
-#if (defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)) || SPI_HAS_TRANSACTION
+#if (defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)) || SPI_HAS_TRANSACTION || defined(__ARDUINO_X86__)
         SPI.transfer(reg);
         uint8_t rv = SPI.transfer(0); // Send empty byte
         SPI_SS::Set();
@@ -273,12 +283,16 @@ uint8_t* MAX3421e< SPI_SS, INTR >::bytesRd(uint8_t reg, uint8_t nbytes, uint8_t*
         spi4teensy3::send(reg);
         spi4teensy3::receive(data_p, nbytes);
         data_p += nbytes;
-#elif defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__)
+#elif (defined(ARDUINO_SAM_DUE) && defined(__SAM3X8E__))
         SPI.transfer(reg);
         while(nbytes) {
             *data_p++ = SPI.transfer(0);
             nbytes--;
         }
+#elif defined(__ARDUINO_X86__)
+        SPI.transfer(reg);
+        SPI.transferBuffer(NULL, data_p, nbytes);
+        data_p += nbytes;
 #else
         SPDR = reg;
         while(!(SPSR & (1 << SPIF))); //wait