added arduino nfcReader files (#42)

Arduino/nfcReader/PN532_HSU/PN532_HSU.h

@@ -0,0 +1,30 @@
+
+#ifndef __PN532_HSU_H__
+#define __PN532_HSU_H__
+
+#include "PN532Interface.h"
+#include "Arduino.h"
+
+#define PN532_HSU_DEBUG
+
+#define PN532_HSU_READ_TIMEOUT						(1000)
+
+class PN532_HSU : public PN532Interface {
+public:
+    PN532_HSU(HardwareSerial &serial);
+    
+    void begin();
+    void wakeup();
+    virtual int8_t writeCommand(const uint8_t *header, uint8_t hlen, const uint8_t *body = 0, uint8_t blen = 0);
+    int16_t readResponse(uint8_t buf[], uint8_t len, uint16_t timeout);
+    
+private:
+    HardwareSerial* _serial;
+    uint8_t command;
+    
+    int8_t readAckFrame();
+    
+    int8_t receive(uint8_t *buf, int len, uint16_t timeout=PN532_HSU_READ_TIMEOUT);
+};
+
+#endif