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.
RecordHeader.h@7:1ebd6049fa57, 2015-12-10 (annotated)
- Committer:
- giovannivisentini
- Date:
- Thu Dec 10 14:58:43 2015 +0000
- Revision:
- 7:1ebd6049fa57
- Parent:
- 6:739e3211749d
- Child:
- 8:473f6e0b03df
fix bug + add operator==
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
giovannivisentini | 6:739e3211749d | 1 | /** |
giovannivisentini | 6:739e3211749d | 2 | ****************************************************************************** |
giovannivisentini | 6:739e3211749d | 3 | * @file RecordHeader.h |
giovannivisentini | 6:739e3211749d | 4 | * @author ST / CentralLabs |
giovannivisentini | 6:739e3211749d | 5 | * @version V1.0.0 |
giovannivisentini | 6:739e3211749d | 6 | * @date 30 Nov 2015 |
giovannivisentini | 6:739e3211749d | 7 | * @brief Record header class |
giovannivisentini | 6:739e3211749d | 8 | ****************************************************************************** |
giovannivisentini | 6:739e3211749d | 9 | * @attention |
giovannivisentini | 6:739e3211749d | 10 | * |
giovannivisentini | 6:739e3211749d | 11 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
giovannivisentini | 4:eaf6c49a86e4 | 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 | 4:eaf6c49a86e4 | 36 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 37 | |
giovannivisentini | 4:eaf6c49a86e4 | 38 | #ifndef NDEFLIB_RECORDHEADER_H_ |
giovannivisentini | 4:eaf6c49a86e4 | 39 | #define NDEFLIB_RECORDHEADER_H_ |
giovannivisentini | 4:eaf6c49a86e4 | 40 | |
giovannivisentini | 4:eaf6c49a86e4 | 41 | #include <stdint.h> |
giovannivisentini | 4:eaf6c49a86e4 | 42 | |
giovannivisentini | 4:eaf6c49a86e4 | 43 | namespace NDefLib { |
giovannivisentini | 4:eaf6c49a86e4 | 44 | |
giovannivisentini | 4:eaf6c49a86e4 | 45 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 46 | * Record header class |
giovannivisentini | 4:eaf6c49a86e4 | 47 | * @see NFC Data Exchange Format (NDEF) Technical Specification NDEF 1.0 |
giovannivisentini | 4:eaf6c49a86e4 | 48 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 49 | class RecordHeader { |
giovannivisentini | 4:eaf6c49a86e4 | 50 | |
giovannivisentini | 4:eaf6c49a86e4 | 51 | public: |
giovannivisentini | 4:eaf6c49a86e4 | 52 | |
giovannivisentini | 4:eaf6c49a86e4 | 53 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 54 | * record type format |
giovannivisentini | 4:eaf6c49a86e4 | 55 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 56 | typedef enum TypeNameFormat { |
giovannivisentini | 4:eaf6c49a86e4 | 57 | Empty = 0x00, //!< Empty |
giovannivisentini | 4:eaf6c49a86e4 | 58 | NFC_well_known = 0x01, //!< NFC_well_known |
giovannivisentini | 4:eaf6c49a86e4 | 59 | Mime_media_type = 0x02,//!< Mime_media_type |
giovannivisentini | 4:eaf6c49a86e4 | 60 | Absolute_URI = 0x03, //!< Absolute_URI |
giovannivisentini | 4:eaf6c49a86e4 | 61 | NFC_external = 0x04, //!< NFC_external |
giovannivisentini | 4:eaf6c49a86e4 | 62 | Unknown = 0x05, //!< Unknown |
giovannivisentini | 4:eaf6c49a86e4 | 63 | Unchanged = 0x06, //!< Unchanged |
giovannivisentini | 4:eaf6c49a86e4 | 64 | Reserved = 0x07 //!< Reserved |
giovannivisentini | 4:eaf6c49a86e4 | 65 | } TypeNameFormat_t; |
giovannivisentini | 4:eaf6c49a86e4 | 66 | |
giovannivisentini | 4:eaf6c49a86e4 | 67 | |
giovannivisentini | 4:eaf6c49a86e4 | 68 | RecordHeader() : |
giovannivisentini | 7:1ebd6049fa57 | 69 | headerFlags(0), typeLength(0), payloadLength(0) { |
giovannivisentini | 7:1ebd6049fa57 | 70 | setSR(true); |
giovannivisentini | 4:eaf6c49a86e4 | 71 | } |
giovannivisentini | 4:eaf6c49a86e4 | 72 | |
giovannivisentini | 4:eaf6c49a86e4 | 73 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 74 | * set the message begin flag |
giovannivisentini | 4:eaf6c49a86e4 | 75 | * @param value true if the record is the first of the message |
giovannivisentini | 4:eaf6c49a86e4 | 76 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 77 | void setMB(bool value) { |
giovannivisentini | 4:eaf6c49a86e4 | 78 | if (value) |
giovannivisentini | 4:eaf6c49a86e4 | 79 | headerFlags |= 0x80; |
giovannivisentini | 4:eaf6c49a86e4 | 80 | else |
giovannivisentini | 7:1ebd6049fa57 | 81 | headerFlags &= ~0x80; |
giovannivisentini | 4:eaf6c49a86e4 | 82 | }//setMB |
giovannivisentini | 4:eaf6c49a86e4 | 83 | |
giovannivisentini | 4:eaf6c49a86e4 | 84 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 85 | * get the message being flag |
giovannivisentini | 4:eaf6c49a86e4 | 86 | * @return true if it is the first record in the message |
giovannivisentini | 4:eaf6c49a86e4 | 87 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 88 | bool getMB() const { |
giovannivisentini | 4:eaf6c49a86e4 | 89 | return (headerFlags & 0x80) != 0; |
giovannivisentini | 4:eaf6c49a86e4 | 90 | }//getMB |
giovannivisentini | 4:eaf6c49a86e4 | 91 | |
giovannivisentini | 4:eaf6c49a86e4 | 92 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 93 | * set the message end flag |
giovannivisentini | 4:eaf6c49a86e4 | 94 | * @param value true if it is the last record in the message |
giovannivisentini | 4:eaf6c49a86e4 | 95 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 96 | void setME(bool value) { |
giovannivisentini | 4:eaf6c49a86e4 | 97 | if (value) |
giovannivisentini | 4:eaf6c49a86e4 | 98 | headerFlags |= 0x40; |
giovannivisentini | 4:eaf6c49a86e4 | 99 | else |
giovannivisentini | 7:1ebd6049fa57 | 100 | headerFlags &= ~0x40; |
giovannivisentini | 4:eaf6c49a86e4 | 101 | }//setME |
giovannivisentini | 4:eaf6c49a86e4 | 102 | |
giovannivisentini | 4:eaf6c49a86e4 | 103 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 104 | * get the message end flag |
giovannivisentini | 4:eaf6c49a86e4 | 105 | * @return true if it is the last record in the message |
giovannivisentini | 4:eaf6c49a86e4 | 106 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 107 | bool getME() const { |
giovannivisentini | 4:eaf6c49a86e4 | 108 | return (headerFlags & 0x40) != 0; |
giovannivisentini | 4:eaf6c49a86e4 | 109 | }//getME |
giovannivisentini | 4:eaf6c49a86e4 | 110 | |
giovannivisentini | 4:eaf6c49a86e4 | 111 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 112 | * set the Chunk flag |
giovannivisentini | 4:eaf6c49a86e4 | 113 | * @param value true if the record is in the first record chunk or a middle record |
giovannivisentini | 4:eaf6c49a86e4 | 114 | * chunk of a chunked payload |
giovannivisentini | 4:eaf6c49a86e4 | 115 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 116 | void setCF(bool value) { |
giovannivisentini | 4:eaf6c49a86e4 | 117 | if (value) |
giovannivisentini | 4:eaf6c49a86e4 | 118 | headerFlags |= 0x20; |
giovannivisentini | 4:eaf6c49a86e4 | 119 | else |
giovannivisentini | 7:1ebd6049fa57 | 120 | headerFlags &= ~0x20; |
giovannivisentini | 4:eaf6c49a86e4 | 121 | }//getCF |
giovannivisentini | 4:eaf6c49a86e4 | 122 | |
giovannivisentini | 4:eaf6c49a86e4 | 123 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 124 | * get the Chunk flag value |
giovannivisentini | 4:eaf6c49a86e4 | 125 | * @return true if the record is in the first record chunk or a middle record |
giovannivisentini | 4:eaf6c49a86e4 | 126 | * chunk of a chunked payload |
giovannivisentini | 4:eaf6c49a86e4 | 127 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 128 | bool getCF() const { |
giovannivisentini | 4:eaf6c49a86e4 | 129 | return (headerFlags & 0x20) != 0; |
giovannivisentini | 4:eaf6c49a86e4 | 130 | }//getCF |
giovannivisentini | 4:eaf6c49a86e4 | 131 | |
giovannivisentini | 4:eaf6c49a86e4 | 132 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 133 | * set the short record flag value |
giovannivisentini | 4:eaf6c49a86e4 | 134 | * @param value true if the record size can be encoded with 8 bits |
giovannivisentini | 4:eaf6c49a86e4 | 135 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 136 | void setSR(bool value) { |
giovannivisentini | 4:eaf6c49a86e4 | 137 | if (value) |
giovannivisentini | 4:eaf6c49a86e4 | 138 | headerFlags |= 0x10; |
giovannivisentini | 4:eaf6c49a86e4 | 139 | else |
giovannivisentini | 7:1ebd6049fa57 | 140 | headerFlags &= ~0x10; |
giovannivisentini | 4:eaf6c49a86e4 | 141 | }//setSR |
giovannivisentini | 4:eaf6c49a86e4 | 142 | |
giovannivisentini | 4:eaf6c49a86e4 | 143 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 144 | * get the Short record flag |
giovannivisentini | 4:eaf6c49a86e4 | 145 | * @return true if we are using the short range header format |
giovannivisentini | 4:eaf6c49a86e4 | 146 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 147 | bool getSR() const { |
giovannivisentini | 4:eaf6c49a86e4 | 148 | return (headerFlags & 0x10) != 0; |
giovannivisentini | 4:eaf6c49a86e4 | 149 | }//getSR |
giovannivisentini | 4:eaf6c49a86e4 | 150 | |
giovannivisentini | 4:eaf6c49a86e4 | 151 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 152 | * set the ID length flag |
giovannivisentini | 4:eaf6c49a86e4 | 153 | * @param value true if we will use the id length value in the record |
giovannivisentini | 4:eaf6c49a86e4 | 154 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 155 | void setIL(bool value) { |
giovannivisentini | 4:eaf6c49a86e4 | 156 | if (value) |
giovannivisentini | 4:eaf6c49a86e4 | 157 | headerFlags |= 0x08; |
giovannivisentini | 4:eaf6c49a86e4 | 158 | else |
giovannivisentini | 7:1ebd6049fa57 | 159 | headerFlags &= ~0x08; |
giovannivisentini | 4:eaf6c49a86e4 | 160 | }//setIL |
giovannivisentini | 4:eaf6c49a86e4 | 161 | |
giovannivisentini | 4:eaf6c49a86e4 | 162 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 163 | * get the ID length flag |
giovannivisentini | 4:eaf6c49a86e4 | 164 | * @param value true if we will use the id length value in the record |
giovannivisentini | 4:eaf6c49a86e4 | 165 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 166 | bool getIL() const { |
giovannivisentini | 4:eaf6c49a86e4 | 167 | return (headerFlags & 0x08) != 0; |
giovannivisentini | 4:eaf6c49a86e4 | 168 | }//getIL |
giovannivisentini | 4:eaf6c49a86e4 | 169 | |
giovannivisentini | 4:eaf6c49a86e4 | 170 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 171 | * set the type name format field |
giovannivisentini | 4:eaf6c49a86e4 | 172 | * @param value record type name format |
giovannivisentini | 4:eaf6c49a86e4 | 173 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 174 | void setFNT(const TypeNameFormat_t value) { |
giovannivisentini | 4:eaf6c49a86e4 | 175 | uint8_t temp = (uint8_t) value; |
giovannivisentini | 4:eaf6c49a86e4 | 176 | temp &= 0x07; //keep the first 3 bits |
giovannivisentini | 4:eaf6c49a86e4 | 177 | headerFlags &= 0xF8; //clean the fist 3 bits |
giovannivisentini | 4:eaf6c49a86e4 | 178 | headerFlags |= temp; //set the fist 3 bits |
giovannivisentini | 4:eaf6c49a86e4 | 179 | }//setFNT |
giovannivisentini | 4:eaf6c49a86e4 | 180 | |
giovannivisentini | 4:eaf6c49a86e4 | 181 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 182 | * get the record type name |
giovannivisentini | 4:eaf6c49a86e4 | 183 | * @return type name format of the record |
giovannivisentini | 4:eaf6c49a86e4 | 184 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 185 | TypeNameFormat_t getFNT() const { |
giovannivisentini | 4:eaf6c49a86e4 | 186 | return (TypeNameFormat_t) (headerFlags & 0x07); |
giovannivisentini | 4:eaf6c49a86e4 | 187 | } |
giovannivisentini | 4:eaf6c49a86e4 | 188 | |
giovannivisentini | 4:eaf6c49a86e4 | 189 | /** |
giovannivisentini | 7:1ebd6049fa57 | 190 | * set the record payload length |
giovannivisentini | 4:eaf6c49a86e4 | 191 | * @par this function will update the SR field as needed |
giovannivisentini | 7:1ebd6049fa57 | 192 | * @param length payload length |
giovannivisentini | 4:eaf6c49a86e4 | 193 | */ |
giovannivisentini | 7:1ebd6049fa57 | 194 | void setPayloadLength(uint32_t length) { |
giovannivisentini | 7:1ebd6049fa57 | 195 | payloadLength = length; |
giovannivisentini | 7:1ebd6049fa57 | 196 | setSR(payloadLength <= 255); |
giovannivisentini | 4:eaf6c49a86e4 | 197 | } |
giovannivisentini | 4:eaf6c49a86e4 | 198 | |
giovannivisentini | 4:eaf6c49a86e4 | 199 | /** |
giovannivisentini | 7:1ebd6049fa57 | 200 | * get the payload length |
giovannivisentini | 7:1ebd6049fa57 | 201 | * @return payload length |
giovannivisentini | 4:eaf6c49a86e4 | 202 | */ |
giovannivisentini | 7:1ebd6049fa57 | 203 | uint32_t getPayloadLength() const { |
giovannivisentini | 7:1ebd6049fa57 | 204 | return payloadLength; |
giovannivisentini | 4:eaf6c49a86e4 | 205 | } |
giovannivisentini | 4:eaf6c49a86e4 | 206 | |
giovannivisentini | 4:eaf6c49a86e4 | 207 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 208 | * set the type length |
giovannivisentini | 4:eaf6c49a86e4 | 209 | * @param size |
giovannivisentini | 4:eaf6c49a86e4 | 210 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 211 | void setTypeLength(uint8_t size) { |
giovannivisentini | 4:eaf6c49a86e4 | 212 | typeLength = size; |
giovannivisentini | 4:eaf6c49a86e4 | 213 | } |
giovannivisentini | 4:eaf6c49a86e4 | 214 | |
giovannivisentini | 4:eaf6c49a86e4 | 215 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 216 | * get the type length |
giovannivisentini | 4:eaf6c49a86e4 | 217 | * @return |
giovannivisentini | 4:eaf6c49a86e4 | 218 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 219 | uint8_t getTypeLength() const { |
giovannivisentini | 4:eaf6c49a86e4 | 220 | return typeLength; |
giovannivisentini | 4:eaf6c49a86e4 | 221 | } |
giovannivisentini | 4:eaf6c49a86e4 | 222 | |
giovannivisentini | 4:eaf6c49a86e4 | 223 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 224 | * get the number of byte needed for store this record |
giovannivisentini | 4:eaf6c49a86e4 | 225 | * @return 3 or 6 |
giovannivisentini | 4:eaf6c49a86e4 | 226 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 227 | uint16_t getRecordLength() const { |
giovannivisentini | 7:1ebd6049fa57 | 228 | return (getSR() ? 3 : 6) + typeLength + payloadLength; |
giovannivisentini | 4:eaf6c49a86e4 | 229 | } |
giovannivisentini | 4:eaf6c49a86e4 | 230 | |
giovannivisentini | 4:eaf6c49a86e4 | 231 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 232 | * store the header information in the buffer |
giovannivisentini | 4:eaf6c49a86e4 | 233 | * @param[out] outBuffer buffer where write the header |
giovannivisentini | 4:eaf6c49a86e4 | 234 | * @return number of write bytes |
giovannivisentini | 4:eaf6c49a86e4 | 235 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 236 | uint8_t writeHeader(uint8_t *outBuffer) const { |
giovannivisentini | 4:eaf6c49a86e4 | 237 | |
giovannivisentini | 4:eaf6c49a86e4 | 238 | uint32_t index = 0; |
giovannivisentini | 4:eaf6c49a86e4 | 239 | |
giovannivisentini | 4:eaf6c49a86e4 | 240 | outBuffer[index++] = headerFlags; |
giovannivisentini | 4:eaf6c49a86e4 | 241 | outBuffer[index++] = typeLength; |
giovannivisentini | 4:eaf6c49a86e4 | 242 | if (getSR()) { |
giovannivisentini | 7:1ebd6049fa57 | 243 | outBuffer[index++] = (uint8_t) payloadLength; |
giovannivisentini | 4:eaf6c49a86e4 | 244 | } else { |
giovannivisentini | 7:1ebd6049fa57 | 245 | outBuffer[index++] = (uint8_t) ((payloadLength & 0xFF000000) |
giovannivisentini | 4:eaf6c49a86e4 | 246 | >> 24); |
giovannivisentini | 7:1ebd6049fa57 | 247 | outBuffer[index++] = (uint8_t) ((payloadLength & 0x00FF0000) |
giovannivisentini | 4:eaf6c49a86e4 | 248 | >> 16); |
giovannivisentini | 7:1ebd6049fa57 | 249 | outBuffer[index++] = (uint8_t) ((payloadLength & 0x0000FF00) |
giovannivisentini | 4:eaf6c49a86e4 | 250 | >> 8); |
giovannivisentini | 7:1ebd6049fa57 | 251 | outBuffer[index++] = (uint8_t) (payloadLength & 0x000000FF); |
giovannivisentini | 4:eaf6c49a86e4 | 252 | } //if-else |
giovannivisentini | 4:eaf6c49a86e4 | 253 | return index; |
giovannivisentini | 4:eaf6c49a86e4 | 254 | } //writeHeader |
giovannivisentini | 4:eaf6c49a86e4 | 255 | |
giovannivisentini | 4:eaf6c49a86e4 | 256 | /** |
giovannivisentini | 4:eaf6c49a86e4 | 257 | * load an header from a buffer |
giovannivisentini | 4:eaf6c49a86e4 | 258 | * @param buffer buffer where read the header |
giovannivisentini | 4:eaf6c49a86e4 | 259 | * @return number of read bytes |
giovannivisentini | 4:eaf6c49a86e4 | 260 | */ |
giovannivisentini | 4:eaf6c49a86e4 | 261 | uint16_t loadHeader(const uint8_t * const buffer) { |
giovannivisentini | 4:eaf6c49a86e4 | 262 | uint32_t index = 0; |
giovannivisentini | 4:eaf6c49a86e4 | 263 | headerFlags = buffer[index++]; |
giovannivisentini | 4:eaf6c49a86e4 | 264 | typeLength = buffer[index++]; |
giovannivisentini | 4:eaf6c49a86e4 | 265 | if (getSR()) { |
giovannivisentini | 7:1ebd6049fa57 | 266 | payloadLength = buffer[index++]; |
giovannivisentini | 4:eaf6c49a86e4 | 267 | } else { |
giovannivisentini | 7:1ebd6049fa57 | 268 | payloadLength = (((uint32_t) buffer[index + 0]) << 24) |
giovannivisentini | 4:eaf6c49a86e4 | 269 | | (((uint32_t) buffer[index + 1]) << 16) |
giovannivisentini | 4:eaf6c49a86e4 | 270 | | (((uint32_t) buffer[index + 2]) << 8) |
giovannivisentini | 4:eaf6c49a86e4 | 271 | | ((uint32_t) buffer[index + 3]); |
giovannivisentini | 4:eaf6c49a86e4 | 272 | index += 4; |
giovannivisentini | 4:eaf6c49a86e4 | 273 | } //if-else |
giovannivisentini | 4:eaf6c49a86e4 | 274 | return index; |
giovannivisentini | 4:eaf6c49a86e4 | 275 | } //loadHeader |
giovannivisentini | 4:eaf6c49a86e4 | 276 | |
giovannivisentini | 7:1ebd6049fa57 | 277 | /** |
giovannivisentini | 7:1ebd6049fa57 | 278 | * equal operator |
giovannivisentini | 7:1ebd6049fa57 | 279 | * @param other other object to compare |
giovannivisentini | 7:1ebd6049fa57 | 280 | * @return true if the 2 record header are equals |
giovannivisentini | 7:1ebd6049fa57 | 281 | */ |
giovannivisentini | 7:1ebd6049fa57 | 282 | bool operator==(const RecordHeader &other) const{ |
giovannivisentini | 7:1ebd6049fa57 | 283 | return (headerFlags==other.headerFlags) && |
giovannivisentini | 7:1ebd6049fa57 | 284 | (typeLength==other.typeLength) && |
giovannivisentini | 7:1ebd6049fa57 | 285 | (payloadLength==other.payloadLength); |
giovannivisentini | 7:1ebd6049fa57 | 286 | } |
giovannivisentini | 7:1ebd6049fa57 | 287 | |
giovannivisentini | 7:1ebd6049fa57 | 288 | bool operator!=(const RecordHeader &other) const{ |
giovannivisentini | 7:1ebd6049fa57 | 289 | return !(*this==other); |
giovannivisentini | 7:1ebd6049fa57 | 290 | } |
giovannivisentini | 4:eaf6c49a86e4 | 291 | |
giovannivisentini | 4:eaf6c49a86e4 | 292 | private: |
giovannivisentini | 4:eaf6c49a86e4 | 293 | uint8_t headerFlags; |
giovannivisentini | 4:eaf6c49a86e4 | 294 | uint8_t typeLength; |
giovannivisentini | 7:1ebd6049fa57 | 295 | uint32_t payloadLength; |
giovannivisentini | 4:eaf6c49a86e4 | 296 | }; |
giovannivisentini | 4:eaf6c49a86e4 | 297 | |
giovannivisentini | 4:eaf6c49a86e4 | 298 | } /* namespace NDefLib */ |
giovannivisentini | 4:eaf6c49a86e4 | 299 | |
giovannivisentini | 4:eaf6c49a86e4 | 300 | #endif /* NDEFLIB_RECORDHEADER_H_ */ |