initial commit

snep.h

@@ -0,0 +1,49 @@
+
+
+#ifndef __SNEP_H__
+#define __SNEP_H__
+
+#include "llcp.h"
+
+#define SNEP_DEFAULT_VERSION	0x10	// Major: 1, Minor: 0
+
+#define SNEP_REQUEST_PUT		0x02
+#define SNEP_REQUEST_GET		0x01
+
+#define SNEP_RESPONSE_SUCCESS	0x81
+#define SNEP_RESPONSE_REJECT	0xFF
+
+class SNEP {
+public:
+	SNEP(PN532Interface &interface) : llcp(interface) {
+		headerBuf = llcp.getHeaderBuffer(&headerBufLen);
+	};
+
+	/**
+    * @brief    write a SNEP packet, the packet should be less than (255 - 2 - 3) bytes
+    * @param    buf     the buffer to contain the packet
+    * @param    len     lenght of the buffer
+    * @param    timeout max time to wait, 0 means no timeout
+    * @return   >0      success
+    *			=0      timeout
+    *           <0      failed
+    */
+    int8_t write(const uint8_t *buf, uint8_t len, uint16_t timeout = 0);
+
+    /**
+    * @brief    read a SNEP packet, the packet will be less than (255 - 2 - 3) bytes
+    * @param    buf     the buffer to contain the packet
+    * @param    len     lenght of the buffer
+    * @param    timeout max time to wait, 0 means no timeout
+    * @return   >=0     length of the packet 
+    *           <0      failed
+    */
+    int16_t read(uint8_t *buf, uint8_t len, uint16_t timeout = 0);
+
+private:
+	LLCP llcp;
+	uint8_t *headerBuf;
+	uint8_t headerBufLen;
+};
+
+#endif // __SNEP_H__