Utility library to read and write Ndef messages from/to a Type4 NFC tag
Dependents: NFC M2M_2016_STM32 MyongjiElec_capstone1 IDW01M1_Cloud_IBM ... more
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NDEF NFC library
This library provides an abstract API to create NDEF formatted messages and records and to read/write them from/to a Type4 NFC Tag.
Implementations
At the moment, the NDEF API is implemented by X_NUCLEO_NFC01A1 and X_NUCLEO_NFC02A1 Dynamic NFC Tag libraries respectively driving the X-NUCLEO-NFC01A1 and X-NUCLEO-NFC02A1 boards.
Message.cpp
- Committer:
- giovannivisentini
- Date:
- 2017-04-28
- Revision:
- 19:13d84b136a62
- Parent:
- 18:cf1dd5c931c2
- Child:
- 20:31f727872290
File content as of revision 19:13d84b136a62:
/** ****************************************************************************** * @file Message.cpp * @author ST / Central Labs * @version V2.0.0 * @date 28 Apr 2017 * @brief NDef Message class implementation ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * 1. Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * 3. Neither the name of STMicroelectronics nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ****************************************************************************** */ #include <cstdlib> #include "NDefLib/Message.h" #include "RecordType/EmptyRecord.h" #include "RecordType/RecordText.h" #include "RecordType/RecordAAR.h" #include "RecordType/RecordMimeType.h" #include "RecordType/RecordURI.h" namespace NDefLib { uint16_t Message::get_byte_length() const { uint16_t lenght = 2; //length size if (mRecords.size() == 0) return lenght + EmptyRecord().get_byte_length(); std::vector<Record*>::const_iterator it = mRecords.begin(); const std::vector<Record*>::const_iterator end = mRecords.end(); for (; it != end; ++it) { lenght += (*it)->get_byte_length(); } //for return lenght; } //getByteLenght uint16_t Message::write(uint8_t *buffer) const { const uint16_t length = get_byte_length() - 2; uint16_t offset = 0; buffer[offset++] = (uint8_t) ((length & 0xFF00) >> 8); buffer[offset++] = (uint8_t) ((length & 0x00FF)); const uint32_t nRecord = mRecords.size(); if (mRecords.size() == 0) { offset += EmptyRecord().write(buffer + offset); return offset; } //else for (uint32_t i = 0; i < nRecord; i++) { Record *r = mRecords[i]; r->set_as_middle_record(); if (i == 0) r->set_as_first_record(); if (i == nRecord - 1) r->set_as_last_record(); offset += r->write(buffer + offset); } //for return offset; } //write void Message::parse_message(const uint8_t * const rawNdefFile, const uint16_t length, Message *msg) { uint16_t offset = 0; Record *r; RecordHeader header; do { const uint8_t headerLenght = header.load_header(rawNdefFile + offset); r = RecordText::parse(header, rawNdefFile + offset + headerLenght); if (r == NULL) r = RecordAAR::parse(header, rawNdefFile + offset + headerLenght); if (r == NULL) r = RecordMimeType::parse(header, rawNdefFile + offset + headerLenght); if (r == NULL) r = RecordURI::parse(header, rawNdefFile + offset + headerLenght); offset += header.get_record_length(); msg->add_record(r); } while (offset < length); } void Message::remove_and_delete_all_record(Message &msg){ const uint32_t nRecords =msg.get_N_records(); for(uint32_t i =0 ;i<nRecords ;i++){ NDefLib::Record *r = msg[i]; delete r; }//for msg.mRecords.clear(); }//removeAndDeleteAllRecord } /* namespace NDefLib */