Diff: PN532_SPI.h

Revision:

0:9c6b9280c0e1

Child:

1:b8cab5222fd0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PN532_SPI.h	Tue Oct 08 08:33:22 2013 +0000
@@ -0,0 +1,31 @@
+
+#ifndef __PN532_SPI_H__
+#define __PN532_SPI_H__
+
+#include "mbed.h"
+#include "PN532Interface.h"
+
+class PN532_SPI : public PN532Interface {
+public:
+    PN532_SPI(SPI &spi, PinName ss);
+        PN532_SPI(SPI *spi, PinName ss);
+    
+    virtual void begin();
+    virtual void wakeup();
+    virtual int8_t writeCommand(const uint8_t buf[], uint8_t len);
+    virtual int16_t readResponse(uint8_t buf[], uint8_t len, uint16_t timeout);
+    
+private:
+    SPI*        _spi;
+    DigitalOut  _ss;
+    uint8_t     command;
+    
+    bool isReady();
+    void writeFrame(const uint8_t buf[], uint8_t len);
+    int8_t readAckFrame();
+    
+    inline void write(uint8_t data) { REVERSE_BITS_ORDER(data); _spi->write(data); }
+    inline uint8_t read() { uint8_t data =  _spi->write(0); REVERSE_BITS_ORDER(data); return data; }   
+};
+
+#endif