ST / NDefLib

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

Fork of NDefLib by ST Expansion SW Team

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.

RecordType/RecordText.cpp@21:72c86cbd49be, 2017-08-21 (annotated)

Committer:
giovannivisentini
Date:
Mon Aug 21 12:02:31 2017 +0000
Revision:
21:72c86cbd49be
Parent:
20:31f727872290 
change on_message_write callback; the message parameter was unused and it pointed to an invalid object

Who changed what in which revision?

UserRevisionLine numberNew contents of line
giovannivisentini 6:739e3211749d 1 /**
giovannivisentini 6:739e3211749d 2 ******************************************************************************
giovannivisentini 6:739e3211749d 3 * @file RecordText.cpp
giovannivisentini 8:473f6e0b03df 4 * @author ST / Central Labs
giovannivisentini 19:13d84b136a62 5 * @version V2.0.0
giovannivisentini 19:13d84b136a62 6 * @date 28 Apr 2017
giovannivisentini 6:739e3211749d 7 * @brief RecordText implementation
giovannivisentini 6:739e3211749d 8 ******************************************************************************
giovannivisentini 6:739e3211749d 9 * @attention
giovannivisentini 6:739e3211749d 10 *
giovannivisentini 6:739e3211749d 11 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
giovannivisentini 0:04b82ae7aa43 12 *
giovannivisentini 6:739e3211749d 13 * Redistribution and use in source and binary forms, with or without modification,
giovannivisentini 6:739e3211749d 14 * are permitted provided that the following conditions are met:
giovannivisentini 6:739e3211749d 15 * 1. Redistributions of source code must retain the above copyright notice,
giovannivisentini 6:739e3211749d 16 * this list of conditions and the following disclaimer.
giovannivisentini 6:739e3211749d 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
giovannivisentini 6:739e3211749d 18 * this list of conditions and the following disclaimer in the documentation
giovannivisentini 6:739e3211749d 19 * and/or other materials provided with the distribution.
giovannivisentini 6:739e3211749d 20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
giovannivisentini 6:739e3211749d 21 * may be used to endorse or promote products derived from this software
giovannivisentini 6:739e3211749d 22 * without specific prior written permission.
giovannivisentini 6:739e3211749d 23 *
giovannivisentini 6:739e3211749d 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
giovannivisentini 6:739e3211749d 25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
giovannivisentini 6:739e3211749d 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
giovannivisentini 6:739e3211749d 27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
giovannivisentini 6:739e3211749d 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
giovannivisentini 6:739e3211749d 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
giovannivisentini 6:739e3211749d 30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
giovannivisentini 6:739e3211749d 31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
giovannivisentini 6:739e3211749d 32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
giovannivisentini 6:739e3211749d 33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
giovannivisentini 6:739e3211749d 34 *
giovannivisentini 6:739e3211749d 35 ******************************************************************************
giovannivisentini 0:04b82ae7aa43 36 */
giovannivisentini 0:04b82ae7aa43 37
giovannivisentini 0:04b82ae7aa43 38 #include <cstring>
giovannivisentini 0:04b82ae7aa43 39 #include <NDefLib/RecordType/RecordText.h>
giovannivisentini 0:04b82ae7aa43 40
giovannivisentini 0:04b82ae7aa43 41 namespace NDefLib {
giovannivisentini 0:04b82ae7aa43 42
giovannivisentini 4:eaf6c49a86e4 43 const uint8_t RecordText::NDEFTextIdCode = 'T';
giovannivisentini 0:04b82ae7aa43 44
giovannivisentini 19:13d84b136a62 45 void RecordText::set_record_header() {
giovannivisentini 19:13d84b136a62 46 mRecordHeader.set_FNT(RecordHeader::NFC_well_known);
giovannivisentini 19:13d84b136a62 47 mRecordHeader.set_type_length(sizeof(NDEFTextIdCode));
giovannivisentini 19:13d84b136a62 48 update_playload_length();
giovannivisentini 0:04b82ae7aa43 49 }
giovannivisentini 0:04b82ae7aa43 50
giovannivisentini 4:eaf6c49a86e4 51 RecordText::RecordText(const std::string &text) :
Davidroid 20:31f727872290 52 mEncode(UTF8), mLanguage("en"), mText(text), mTextStatus (get_text_status(mEncode, mLanguage)) {
giovannivisentini 19:13d84b136a62 53 set_record_header();
giovannivisentini 0:04b82ae7aa43 54 }
giovannivisentini 0:04b82ae7aa43 55
giovannivisentini 4:eaf6c49a86e4 56 RecordText::RecordText(const TextEncoding encoding, const std::string &language,
Davidroid 20:31f727872290 57 const std::string &text) :
Davidroid 20:31f727872290 58 mEncode(encoding), mLanguage(language), mText(text), mTextStatus(get_text_status(mEncode, mLanguage)) {
giovannivisentini 19:13d84b136a62 59 set_record_header();
giovannivisentini 0:04b82ae7aa43 60 }
giovannivisentini 0:04b82ae7aa43 61
giovannivisentini 4:eaf6c49a86e4 62 uint16_t RecordText::write(uint8_t *buffer) {
giovannivisentini 4:eaf6c49a86e4 63 int16_t offset = 0;
giovannivisentini 19:13d84b136a62 64 offset += mRecordHeader.write_header(buffer);
giovannivisentini 0:04b82ae7aa43 65
giovannivisentini 4:eaf6c49a86e4 66 buffer[offset++] = NDEFTextIdCode;
giovannivisentini 4:eaf6c49a86e4 67 buffer[offset++] = mTextStatus;
giovannivisentini 0:04b82ae7aa43 68
giovannivisentini 4:eaf6c49a86e4 69 std::memcpy(buffer + offset, mLanguage.c_str(), mLanguage.size());
giovannivisentini 4:eaf6c49a86e4 70 offset += mLanguage.size();
giovannivisentini 4:eaf6c49a86e4 71 std::memcpy(buffer + offset, mText.c_str(), mText.size());
giovannivisentini 4:eaf6c49a86e4 72 offset += mText.size();
Davidroid 20:31f727872290 73
giovannivisentini 0:04b82ae7aa43 74 return offset;
giovannivisentini 0:04b82ae7aa43 75 }
giovannivisentini 0:04b82ae7aa43 76
Davidroid 20:31f727872290 77 RecordText* RecordText::parse(const RecordHeader &header, const uint8_t * const buffer) {
giovannivisentini 4:eaf6c49a86e4 78 uint32_t index = 0;
Davidroid 20:31f727872290 79 if (header.get_FNT() == RecordHeader::NFC_well_known && buffer[index++] == NDEFTextIdCode) {
giovannivisentini 0:04b82ae7aa43 80 const uint8_t textStatus = buffer[index++];
giovannivisentini 19:13d84b136a62 81 const TextEncoding enc = get_encoding(textStatus);
giovannivisentini 19:13d84b136a62 82 const uint8_t langSize = get_language_length(textStatus);
giovannivisentini 0:04b82ae7aa43 83 //-1 is the textStatus
giovannivisentini 19:13d84b136a62 84 const uint8_t textSize = header.get_payload_length() - langSize - 1;
giovannivisentini 0:04b82ae7aa43 85
giovannivisentini 4:eaf6c49a86e4 86 return new RecordText(enc,
Davidroid 20:31f727872290 87 std::string((const char*) (buffer + index), langSize),
Davidroid 20:31f727872290 88 std::string((const char*) (buffer + index + langSize),
Davidroid 20:31f727872290 89 textSize));
Davidroid 20:31f727872290 90 } else {
giovannivisentini 0:04b82ae7aa43 91 return NULL;
Davidroid 20:31f727872290 92 }
giovannivisentini 0:04b82ae7aa43 93 }
giovannivisentini 0:04b82ae7aa43 94
giovannivisentini 0:04b82ae7aa43 95 } /* namespace NDefLib */
Davidroid 20:31f727872290 96
Davidroid 20:31f727872290 97
Davidroid 20:31f727872290 98 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/