Mbed OS Reference | ndef.h Source File

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 /*
  * Copyright (c) 2013-2018, ARM Limited, All Rights Reserved
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License"); you may
  * not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  * http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
  * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 /**
  * \file ndef.h
  * \copyright Copyright (c) ARM Ltd 2013
  * \author Donatien Garnier
  */
 
 /** \addtogroup NDEF
  *  @{
  *  \name Generic NDEF Tag
  *  @{
  */
 
 #ifndef NDEF_H_
 #define NDEF_H_
 
 #include "stack/nfc_common.h"
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 //Generic interface for NDEF messages
 typedef struct __ndef_msg ndef_msg_t;
 
 /** Function called to generate the tag's content on read (target mode)
  * \param pTag pointer to ndef_tag_t instance
  * \param type pMem buffer in which to store the generated content
  */
 typedef nfc_err_t (*ndef_encode_fn_t)(ndef_msg_t *pTag, ac_buffer_builder_t *pBufferBldr, void *pUserData);
 
 /** Function called to decode the tag's content on write (target mode) or read (reader mode)
  * \param pTag pointer to ndef_tag_t instance
  * \param type pMem buffer containing the tag's content
  */
 typedef nfc_err_t (*ndef_decode_fn_t)(ndef_msg_t *pTag, ac_buffer_t *pBuffer, void *pUserData);
 
 struct __ndef_msg {
     ndef_encode_fn_t encode;
     ndef_decode_fn_t decode;
     ac_buffer_builder_t bufferBldr;
     void *pUserData;
 };
 
 void ndef_msg_init(ndef_msg_t *pNdef, ndef_encode_fn_t encode, ndef_decode_fn_t decode, uint8_t *data, size_t size, void *pUserData);
 
 static inline nfc_err_t ndef_msg_encode(ndef_msg_t *pNdef)
 {
     if (pNdef->encode == NULL) {
         return NFC_OK;
     }
     return pNdef->encode(pNdef, &pNdef->bufferBldr, pNdef->pUserData);
 }
 
 static inline nfc_err_t ndef_msg_decode(ndef_msg_t *pNdef)
 {
     if (pNdef->decode == NULL) {
         return NFC_OK;
     }
     return pNdef->decode(pNdef, ac_buffer_builder_buffer(&pNdef->bufferBldr), pNdef->pUserData);
 }
 
 static inline ac_buffer_builder_t *ndef_msg_buffer_builder(ndef_msg_t *pNdef)
 {
     return &pNdef->bufferBldr;
 }
 
 //void* ndef_tag_impl(ndef_tag_t* pNdefTag);
 
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* NDEF_H_ */
 
 /**
  * @}
  * @}
  * */
 
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