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AppNearMe µNFC stack for the NXP PN532 chip License: You can use the stack free of charge to prototype with mbed; if you want to use the stack with your commercial product, get in touch!

Dependents:   IOT_sensor_nfc AppNearMe_MuNFC_PN532_Test p2p_nfc_test NFCMoodLamp ... more

License

You can use the stack free of charge to prototype with mbed; if you want to use the stack with your commercial product, get in touch!

PN532/TLVList.cpp@11:5be631376e5b, 2012-11-07 (annotated)

Committer:
AppNearMe
Date:
Wed Nov 07 18:19:09 2012 +0000
Revision:
11:5be631376e5b
Updated library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AppNearMe 11:5be631376e5b 1 /*
AppNearMe 11:5be631376e5b 2 TLVList.cpp
AppNearMe 11:5be631376e5b 3 Copyright (c) Donatien Garnier 2012
AppNearMe 11:5be631376e5b 4 donatien.garnier@appnearme.com
AppNearMe 11:5be631376e5b 5 http://www.appnearme.com/
AppNearMe 11:5be631376e5b 6 */
AppNearMe 11:5be631376e5b 7
AppNearMe 11:5be631376e5b 8 #include "TLVList.h"
AppNearMe 11:5be631376e5b 9
AppNearMe 11:5be631376e5b 10 #include "munfc/core/fwk.h"
AppNearMe 11:5be631376e5b 11 #include "munfc/ndef/appnearme_ndef_tlv.h"
AppNearMe 11:5be631376e5b 12
AppNearMe 11:5be631376e5b 13 #include <cstring> //For memcpy, strlen
AppNearMe 11:5be631376e5b 14 using std::memcpy;
AppNearMe 11:5be631376e5b 15 using std::strlen;
AppNearMe 11:5be631376e5b 16
AppNearMe 11:5be631376e5b 17 TLVList::TLVList() : m_tlvList(NULL)
AppNearMe 11:5be631376e5b 18 {
AppNearMe 11:5be631376e5b 19
AppNearMe 11:5be631376e5b 20 }
AppNearMe 11:5be631376e5b 21
AppNearMe 11:5be631376e5b 22 void TLVList::wrap(tlv_list* payload)
AppNearMe 11:5be631376e5b 23 {
AppNearMe 11:5be631376e5b 24 m_tlvList = payload;
AppNearMe 11:5be631376e5b 25 m_space = true;
AppNearMe 11:5be631376e5b 26 m_type = NONE;
AppNearMe 11:5be631376e5b 27 }
AppNearMe 11:5be631376e5b 28
AppNearMe 11:5be631376e5b 29
AppNearMe 11:5be631376e5b 30
AppNearMe 11:5be631376e5b 31 /* Getters */
AppNearMe 11:5be631376e5b 32
AppNearMe 11:5be631376e5b 33 /** Iterate to next item
AppNearMe 11:5be631376e5b 34 * @return type if next item exists, NONE otherwise
AppNearMe 11:5be631376e5b 35 */
AppNearMe 11:5be631376e5b 36 TLVList::TLVType TLVList::getNext()
AppNearMe 11:5be631376e5b 37 {
AppNearMe 11:5be631376e5b 38 if(!m_tlvList)
AppNearMe 11:5be631376e5b 39 {
AppNearMe 11:5be631376e5b 40 return NONE;
AppNearMe 11:5be631376e5b 41 }
AppNearMe 11:5be631376e5b 42
AppNearMe 11:5be631376e5b 43 m_type = (TLVList::TLVType) appnearme_ndef_tlv_next_type(m_tlvList); //Explicit cast, this is the same enum
AppNearMe 11:5be631376e5b 44 switch(m_type)
AppNearMe 11:5be631376e5b 45 {
AppNearMe 11:5be631376e5b 46 case UINT8:
AppNearMe 11:5be631376e5b 47 m_arrayLen = 0;
AppNearMe 11:5be631376e5b 48 m_uint8 = appnearme_ndef_tlv_get_uint8(m_tlvList);
AppNearMe 11:5be631376e5b 49 break;
AppNearMe 11:5be631376e5b 50 case UINT32:
AppNearMe 11:5be631376e5b 51 m_arrayLen = 0;
AppNearMe 11:5be631376e5b 52 m_uint32 = appnearme_ndef_tlv_get_uint32(m_tlvList);
AppNearMe 11:5be631376e5b 53 break;
AppNearMe 11:5be631376e5b 54 case UINT8_ARRAY:
AppNearMe 11:5be631376e5b 55 //In this order, otherwise would break state-machine
AppNearMe 11:5be631376e5b 56 m_arrayLen = appnearme_ndef_tlv_get_array_length(m_tlvList);
AppNearMe 11:5be631376e5b 57 m_array = appnearme_ndef_tlv_get_array(m_tlvList);
AppNearMe 11:5be631376e5b 58 break;
AppNearMe 11:5be631376e5b 59 case STRING:
AppNearMe 11:5be631376e5b 60 //In this order, otherwise would break state-machine
AppNearMe 11:5be631376e5b 61 m_strLen = appnearme_ndef_tlv_get_string_length(m_tlvList);
AppNearMe 11:5be631376e5b 62 m_str = appnearme_ndef_tlv_get_string(m_tlvList);
AppNearMe 11:5be631376e5b 63 break;
AppNearMe 11:5be631376e5b 64 }
AppNearMe 11:5be631376e5b 65 return m_type;
AppNearMe 11:5be631376e5b 66 }
AppNearMe 11:5be631376e5b 67
AppNearMe 11:5be631376e5b 68 /** Get current item's type.
AppNearMe 11:5be631376e5b 69 * @return type if item exists, NONE otherwise
AppNearMe 11:5be631376e5b 70 */
AppNearMe 11:5be631376e5b 71 TLVList::TLVType TLVList::getType()
AppNearMe 11:5be631376e5b 72 {
AppNearMe 11:5be631376e5b 73 return m_type;
AppNearMe 11:5be631376e5b 74 }
AppNearMe 11:5be631376e5b 75
AppNearMe 11:5be631376e5b 76 /** Get uint8_t value
AppNearMe 11:5be631376e5b 77 * If the current item's type is uint32_t, the value will be masked with 0xFF
AppNearMe 11:5be631376e5b 78 * @return uint8_t value OR 0 if the type is incompatible
AppNearMe 11:5be631376e5b 79 */
AppNearMe 11:5be631376e5b 80 uint8_t TLVList::getUInt8()
AppNearMe 11:5be631376e5b 81 {
AppNearMe 11:5be631376e5b 82 switch(m_type)
AppNearMe 11:5be631376e5b 83 {
AppNearMe 11:5be631376e5b 84 case UINT8:
AppNearMe 11:5be631376e5b 85 return m_uint8;
AppNearMe 11:5be631376e5b 86 case UINT32:
AppNearMe 11:5be631376e5b 87 return m_uint32 & 0xFF;
AppNearMe 11:5be631376e5b 88 default:
AppNearMe 11:5be631376e5b 89 return 0;
AppNearMe 11:5be631376e5b 90 }
AppNearMe 11:5be631376e5b 91 }
AppNearMe 11:5be631376e5b 92
AppNearMe 11:5be631376e5b 93 /** Get uint32_t value
AppNearMe 11:5be631376e5b 94 * If the current item's type is uint8_t, the value will be casted to uint32_t
AppNearMe 11:5be631376e5b 95 * @return uint32_t value OR 0 if the type is incompatible
AppNearMe 11:5be631376e5b 96 */
AppNearMe 11:5be631376e5b 97 uint32_t TLVList::getUInt32()
AppNearMe 11:5be631376e5b 98 {
AppNearMe 11:5be631376e5b 99 switch(m_type)
AppNearMe 11:5be631376e5b 100 {
AppNearMe 11:5be631376e5b 101 case UINT32:
AppNearMe 11:5be631376e5b 102 return m_uint32;
AppNearMe 11:5be631376e5b 103 case UINT8:
AppNearMe 11:5be631376e5b 104 return m_uint8 & 0xFF;
AppNearMe 11:5be631376e5b 105 default:
AppNearMe 11:5be631376e5b 106 return 0;
AppNearMe 11:5be631376e5b 107 }
AppNearMe 11:5be631376e5b 108 }
AppNearMe 11:5be631376e5b 109
AppNearMe 11:5be631376e5b 110 /** Get array length
AppNearMe 11:5be631376e5b 111 * @return bytes array length
AppNearMe 11:5be631376e5b 112 */
AppNearMe 11:5be631376e5b 113 size_t TLVList::getArrayLength()
AppNearMe 11:5be631376e5b 114 {
AppNearMe 11:5be631376e5b 115 switch(m_type)
AppNearMe 11:5be631376e5b 116 {
AppNearMe 11:5be631376e5b 117 case UINT8_ARRAY:
AppNearMe 11:5be631376e5b 118 return m_arrayLen;
AppNearMe 11:5be631376e5b 119 default:
AppNearMe 11:5be631376e5b 120 return 0;
AppNearMe 11:5be631376e5b 121 }
AppNearMe 11:5be631376e5b 122 }
AppNearMe 11:5be631376e5b 123
AppNearMe 11:5be631376e5b 124 /** Get array
AppNearMe 11:5be631376e5b 125 * @param buf pointer to buffer's start
AppNearMe 11:5be631376e5b 126 * @param maxLen maximum number of bytes to copy
AppNearMe 11:5be631376e5b 127 * @return number of copied bytes
AppNearMe 11:5be631376e5b 128 */
AppNearMe 11:5be631376e5b 129 size_t TLVList::getArray(uint8_t* buf, size_t maxLen)
AppNearMe 11:5be631376e5b 130 {
AppNearMe 11:5be631376e5b 131 if(m_type != UINT8_ARRAY)
AppNearMe 11:5be631376e5b 132 {
AppNearMe 11:5be631376e5b 133 return 0;
AppNearMe 11:5be631376e5b 134 }
AppNearMe 11:5be631376e5b 135 size_t len = MIN(maxLen, m_arrayLen);
AppNearMe 11:5be631376e5b 136 memcpy(buf, m_array, len);
AppNearMe 11:5be631376e5b 137 return len;
AppNearMe 11:5be631376e5b 138 }
AppNearMe 11:5be631376e5b 139
AppNearMe 11:5be631376e5b 140 /** Get string length
AppNearMe 11:5be631376e5b 141 * @return string length
AppNearMe 11:5be631376e5b 142 */
AppNearMe 11:5be631376e5b 143 size_t TLVList::getStringLength()
AppNearMe 11:5be631376e5b 144 {
AppNearMe 11:5be631376e5b 145 switch(m_type)
AppNearMe 11:5be631376e5b 146 {
AppNearMe 11:5be631376e5b 147 case STRING:
AppNearMe 11:5be631376e5b 148 return m_strLen;
AppNearMe 11:5be631376e5b 149 default:
AppNearMe 11:5be631376e5b 150 return 0;
AppNearMe 11:5be631376e5b 151 }
AppNearMe 11:5be631376e5b 152 }
AppNearMe 11:5be631376e5b 153
AppNearMe 11:5be631376e5b 154
AppNearMe 11:5be631376e5b 155 /** Get string
AppNearMe 11:5be631376e5b 156 * Copy string to buffer (including null-terminating char)
AppNearMe 11:5be631376e5b 157 * @param str pointer to string's start
AppNearMe 11:5be631376e5b 158 * @param maxLen maximum number of chars to copy (not including null-terminating char)
AppNearMe 11:5be631376e5b 159 * @return number of copied chars
AppNearMe 11:5be631376e5b 160 */
AppNearMe 11:5be631376e5b 161 size_t TLVList::getString(char* str, size_t maxLen)
AppNearMe 11:5be631376e5b 162 {
AppNearMe 11:5be631376e5b 163 if(m_type != STRING)
AppNearMe 11:5be631376e5b 164 {
AppNearMe 11:5be631376e5b 165 return 0;
AppNearMe 11:5be631376e5b 166 }
AppNearMe 11:5be631376e5b 167 size_t len = MIN(maxLen, m_strLen);
AppNearMe 11:5be631376e5b 168 memcpy(str, m_str, len);
AppNearMe 11:5be631376e5b 169 str[len] = '\0'; //Add null-terminating char
AppNearMe 11:5be631376e5b 170 return len;
AppNearMe 11:5be631376e5b 171 }
AppNearMe 11:5be631376e5b 172
AppNearMe 11:5be631376e5b 173 /* Setters */
AppNearMe 11:5be631376e5b 174
AppNearMe 11:5be631376e5b 175 /** Check whether there is space left in list
AppNearMe 11:5be631376e5b 176 * @return true if there is space left, false otherwise
AppNearMe 11:5be631376e5b 177 */
AppNearMe 11:5be631376e5b 178 bool TLVList::isSpace()
AppNearMe 11:5be631376e5b 179 {
AppNearMe 11:5be631376e5b 180 return m_space;
AppNearMe 11:5be631376e5b 181 }
AppNearMe 11:5be631376e5b 182
AppNearMe 11:5be631376e5b 183 /** Put uint8_t value
AppNearMe 11:5be631376e5b 184 * @param value uint8_t value
AppNearMe 11:5be631376e5b 185 * @return true on success, false if there is not enough space in buffer
AppNearMe 11:5be631376e5b 186 */
AppNearMe 11:5be631376e5b 187 bool TLVList::putUInt8(uint8_t value)
AppNearMe 11:5be631376e5b 188 {
AppNearMe 11:5be631376e5b 189 int res = appnearme_ndef_tlv_put_uint8(m_tlvList, value);
AppNearMe 11:5be631376e5b 190 if( !res )
AppNearMe 11:5be631376e5b 191 {
AppNearMe 11:5be631376e5b 192 m_space = false;
AppNearMe 11:5be631376e5b 193 return false;
AppNearMe 11:5be631376e5b 194 }
AppNearMe 11:5be631376e5b 195 return true;
AppNearMe 11:5be631376e5b 196 }
AppNearMe 11:5be631376e5b 197
AppNearMe 11:5be631376e5b 198 /** Put uint32_t value
AppNearMe 11:5be631376e5b 199 * @param value uint32_t value
AppNearMe 11:5be631376e5b 200 * @return true on success, false if there is not enough space in buffer
AppNearMe 11:5be631376e5b 201 */
AppNearMe 11:5be631376e5b 202 bool TLVList::putUInt32(uint32_t value)
AppNearMe 11:5be631376e5b 203 {
AppNearMe 11:5be631376e5b 204 int res = appnearme_ndef_tlv_put_uint32(m_tlvList, value);
AppNearMe 11:5be631376e5b 205 if( !res )
AppNearMe 11:5be631376e5b 206 {
AppNearMe 11:5be631376e5b 207 m_space = false;
AppNearMe 11:5be631376e5b 208 return false;
AppNearMe 11:5be631376e5b 209 }
AppNearMe 11:5be631376e5b 210 return true;
AppNearMe 11:5be631376e5b 211 }
AppNearMe 11:5be631376e5b 212
AppNearMe 11:5be631376e5b 213 /** Put array
AppNearMe 11:5be631376e5b 214 * @param buf pointer to buffer's start
AppNearMe 11:5be631376e5b 215 * @param len number of bytes to copy
AppNearMe 11:5be631376e5b 216 * @return number of copied bytes
AppNearMe 11:5be631376e5b 217 */
AppNearMe 11:5be631376e5b 218 size_t TLVList::putArray(uint8_t* buf, size_t len)
AppNearMe 11:5be631376e5b 219 {
AppNearMe 11:5be631376e5b 220 int res = appnearme_ndef_tlv_put_array(m_tlvList, buf, len);
AppNearMe 11:5be631376e5b 221 if( !res )
AppNearMe 11:5be631376e5b 222 {
AppNearMe 11:5be631376e5b 223 m_space = false;
AppNearMe 11:5be631376e5b 224 return 0;
AppNearMe 11:5be631376e5b 225 }
AppNearMe 11:5be631376e5b 226 return len;
AppNearMe 11:5be631376e5b 227 }
AppNearMe 11:5be631376e5b 228
AppNearMe 11:5be631376e5b 229 /** Put string
AppNearMe 11:5be631376e5b 230 * @param str pointer to null-terminated string's start
AppNearMe 11:5be631376e5b 231 * @return number of copied bytes
AppNearMe 11:5be631376e5b 232 */
AppNearMe 11:5be631376e5b 233 size_t TLVList::putString(char* str)
AppNearMe 11:5be631376e5b 234 {
AppNearMe 11:5be631376e5b 235 int res = appnearme_ndef_tlv_put_string(m_tlvList, str);
AppNearMe 11:5be631376e5b 236 if( !res )
AppNearMe 11:5be631376e5b 237 {
AppNearMe 11:5be631376e5b 238 m_space = false;
AppNearMe 11:5be631376e5b 239 return 0;
AppNearMe 11:5be631376e5b 240 }
AppNearMe 11:5be631376e5b 241 return strlen(str);
AppNearMe 11:5be631376e5b 242 }
AppNearMe 11:5be631376e5b 243
AppNearMe 11:5be631376e5b 244
AppNearMe 11:5be631376e5b 245
AppNearMe 11:5be631376e5b 246