import of stable branch of USB_Host_Shield

from SHA https://github.com/felis/USB_Host_Shield/commit/a59ba5b6fcc96ac79c4dbbffb6c8559d4c944a43

Change-Id: I8244f70db34c734dd8dd454b4957ecdbffd85087

diff --git a/USB_Host_Shield/Max3421e.h b/USB_Host_Shield/Max3421e.h
new file mode 100644
index 0000000..cf40c5d
--- /dev/null
+++ b/USB_Host_Shield/Max3421e.h

@@ -0,0 +1,54 @@
+/* Copyright 2009-2011 Oleg Mazurov, Circuits At Home, http://www.circuitsathome.com */

+/* MAX3421E functions */

+#ifndef _MAX3421E_H_

+#define _MAX3421E_H_

+

+

+//#include <Spi.h>

+//#include <WProgram.h>

+#include "WProgram.h"

+#include "Max3421e_constants.h"

+

+class MAX3421E /* : public SPI */ {

+    // byte vbusState;

+    public:

+        MAX3421E( void );

+        byte getVbusState( void );

+//        void toggle( byte pin );

+        static void regWr( byte, byte );

+        char * bytesWr( byte, byte, char * );

+        static void gpioWr( byte );

+        byte regRd( byte );

+        char * bytesRd( byte, byte, char * );

+        byte gpioRd( void );

+        boolean reset();

+        boolean vbusPwr ( boolean );

+        void busprobe( void );

+        void powerOn();

+        byte IntHandler();

+        byte GpxHandler();

+        byte Task();

+    private:

+      static void spi_init() {

+        uint8_t tmp;

+        // initialize SPI pins

+        pinMode(SCK_PIN, OUTPUT);

+        pinMode(MOSI_PIN, OUTPUT);

+        pinMode(MISO_PIN, INPUT);

+        pinMode(SS_PIN, OUTPUT);

+        digitalWrite( SS_PIN, HIGH ); 

+        /* mode 00 (CPOL=0, CPHA=0) master, fclk/2. Mode 11 (CPOL=11, CPHA=11) is also supported by MAX3421E */

+        SPCR = 0x50;

+        SPSR = 0x01;

+        /**/

+        tmp = SPSR;

+        tmp = SPDR;

+    }

+//        void init();

+    friend class Max_LCD;        

+};

+

+

+

+

+#endif //_MAX3421E_H_