--- /dev/null
+//-----------------------------------------------------------------------------
+// Copyright (C) 2019 Merlok
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// NFC Data Exchange Format (NDEF) functions
+//-----------------------------------------------------------------------------
+
+#ifndef _NDEF_H_
+#define _NDEF_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <stddef.h>
+
+typedef enum {
+ tnfEmptyRecord = 0x00,
+ tnfWellKnownRecord = 0x01,
+ tnfMIMEMediaRecord = 0x02,
+ tnfAbsoluteURIRecord = 0x03,
+ tnfExternalRecord = 0x04,
+ tnfUnknownRecord = 0x05,
+ tnfUnchangedRecord = 0x06
+} TypeNameFormat_t;
+
+typedef enum {
+ stNotPresent = 0x00,
+ stRSASSA_PSS_SHA_1 = 0x01,
+ stRSASSA_PKCS1_v1_5_WITH_SHA_1 = 0x02,
+ stDSA = 0x03,
+ stECDSA = 0x04,
+ stNA = 0x05
+} ndefSigType_t;
+
+typedef enum {
+ sfX_509 = 0x00,
+ sfX9_68 = 0x01,
+ sfNA = 0x02
+} ndefCertificateFormat_t;
+
+typedef struct {
+ bool MessageBegin;
+ bool MessageEnd;
+ bool ChunkFlag;
+ bool ShortRecordBit;
+ bool IDLenPresent;
+ TypeNameFormat_t TypeNameFormat;
+ size_t TypeLen;
+ size_t PayloadLen;
+ size_t IDLen;
+ size_t len;
+ size_t RecLen;
+ uint8_t *Type;
+ uint8_t *Payload;
+ uint8_t *ID;
+} NDEFHeader_t;
+
+extern int NDEFDecodeAndPrint(uint8_t *ndef, size_t ndefLen, bool verbose);
+
+#endif // _NDEF_H_