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/RecordGeo.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 RecordGEO.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 12:ed4d9b8d1410 7 * @brief RecordGEO 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 4:eaf6c49a86e4 37 #include <cstdio>
giovannivisentini 0:04b82ae7aa43 38
giovannivisentini 1:a0eeb478a45a 39 #include "RecordGeo.h"
giovannivisentini 0:04b82ae7aa43 40
giovannivisentini 0:04b82ae7aa43 41 namespace NDefLib {
giovannivisentini 12:ed4d9b8d1410 42
giovannivisentini 4:eaf6c49a86e4 43 const std::string RecordGeo::sGeoTag = ("geo:");
giovannivisentini 0:04b82ae7aa43 44
giovannivisentini 4:eaf6c49a86e4 45 //number of digits used for print the coordintate
giovannivisentini 4:eaf6c49a86e4 46 #define N_FLOAT_DIGIS 4
giovannivisentini 4:eaf6c49a86e4 47 #define N_INTEGER_DIGIS 3
giovannivisentini 4:eaf6c49a86e4 48 //string with the 2 coordinate format
giovannivisentini 4:eaf6c49a86e4 49 #define COORDINATE_WRITE_FORMAT "%3.4f,%3.4f"
giovannivisentini 4:eaf6c49a86e4 50 //+1 = sign, +1 = .
giovannivisentini 4:eaf6c49a86e4 51 #define COORDINATE_STR_SIZE (1+N_INTEGER_DIGIS+1+N_FLOAT_DIGIS)
giovannivisentini 4:eaf6c49a86e4 52
giovannivisentini 4:eaf6c49a86e4 53 //string to use for read a couple of coordinate
giovannivisentini 4:eaf6c49a86e4 54 #define COORDINATE_READ_FORMAT "%f,%f"
giovannivisentini 4:eaf6c49a86e4 55
giovannivisentini 4:eaf6c49a86e4 56
giovannivisentini 4:eaf6c49a86e4 57 RecordGeo::RecordGeo(const float lat, const float lon) :
Davidroid 20:31f727872290 58 RecordURI(sGeoTag), mLatitiude(lat), mLongitude(lon), mContentIsChange(true) {
giovannivisentini 0:04b82ae7aa43 59 };
giovannivisentini 0:04b82ae7aa43 60
giovannivisentini 19:13d84b136a62 61 void RecordGeo::update_content(){
Davidroid 20:31f727872290 62 if(!mContentIsChange) {
giovannivisentini 4:eaf6c49a86e4 63 return;
Davidroid 20:31f727872290 64 }
giovannivisentini 4:eaf6c49a86e4 65
giovannivisentini 4:eaf6c49a86e4 66 //2 coordinate +1 for the separator +1 for the \0
giovannivisentini 4:eaf6c49a86e4 67 char buffer[2*COORDINATE_STR_SIZE+1+1];
giovannivisentini 4:eaf6c49a86e4 68 std::sprintf(buffer,COORDINATE_WRITE_FORMAT,mLatitiude,mLongitude);
giovannivisentini 4:eaf6c49a86e4 69 mContent.clear();
giovannivisentini 4:eaf6c49a86e4 70 mContent.append(buffer);
giovannivisentini 4:eaf6c49a86e4 71
giovannivisentini 4:eaf6c49a86e4 72 mContentIsChange=false;
giovannivisentini 4:eaf6c49a86e4 73 }
giovannivisentini 4:eaf6c49a86e4 74
Davidroid 20:31f727872290 75 RecordGeo* RecordGeo::parse(const RecordHeader &header, const uint8_t * const buffer) {
giovannivisentini 4:eaf6c49a86e4 76 uint16_t offset = 0;
Davidroid 20:31f727872290 77 if (buffer[offset++] != RecordURI::sNDEFUriIdCode) {
giovannivisentini 1:a0eeb478a45a 78 return NULL;
Davidroid 20:31f727872290 79 }
Davidroid 20:31f727872290 80 if (buffer[offset++] != RecordURI::UNKNOWN) {
giovannivisentini 4:eaf6c49a86e4 81 return NULL;
Davidroid 20:31f727872290 82 }
Davidroid 20:31f727872290 83 if (sGeoTag.compare(0, sGeoTag.size(), (const char*) buffer + offset, sGeoTag.size()) != 0) {
giovannivisentini 4:eaf6c49a86e4 84 return NULL;
Davidroid 20:31f727872290 85 }
giovannivisentini 4:eaf6c49a86e4 86 offset += sGeoTag.size();
giovannivisentini 0:04b82ae7aa43 87
Davidroid 20:31f727872290 88 const std::string uriContent((const char*) (buffer + offset), header.get_payload_length() - offset);
giovannivisentini 4:eaf6c49a86e4 89
Davidroid 20:31f727872290 90 float lat, lon;
giovannivisentini 4:eaf6c49a86e4 91 //build the record only if both the coordinate are available
Davidroid 20:31f727872290 92 if (std::sscanf(uriContent.c_str(),COORDINATE_READ_FORMAT,&lat,&lon)!=2) {
giovannivisentini 1:a0eeb478a45a 93 return NULL;
Davidroid 20:31f727872290 94 }
Davidroid 20:31f727872290 95
giovannivisentini 4:eaf6c49a86e4 96 return new RecordGeo(lat,lon);
giovannivisentini 0:04b82ae7aa43 97 }
giovannivisentini 0:04b82ae7aa43 98
giovannivisentini 0:04b82ae7aa43 99 } /* namespace NDefLib */
Davidroid 20:31f727872290 100
Davidroid 20:31f727872290 101
Davidroid 20:31f727872290 102 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/