Generic library for working with PN532-like chips
Fork of PN532 by
MifareClassic.cpp@11:5b8afec8bee6, 2015-02-04 (annotated)
- Committer:
- r4z0r7o3
- Date:
- Wed Feb 04 19:26:03 2015 +0000
- Revision:
- 11:5b8afec8bee6
- Parent:
- 10:f959b305a571
Fix missing space in tag print()
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
yihui | 3:4189a10038e6 | 1 | #include "MifareClassic.h" |
yihui | 3:4189a10038e6 | 2 | #include "PN532_debug.h" |
yihui | 3:4189a10038e6 | 3 | |
yihui | 3:4189a10038e6 | 4 | #define BLOCK_SIZE 16 |
yihui | 3:4189a10038e6 | 5 | #define LONG_TLV_SIZE 4 |
yihui | 3:4189a10038e6 | 6 | #define SHORT_TLV_SIZE 2 |
yihui | 3:4189a10038e6 | 7 | |
yihui | 3:4189a10038e6 | 8 | #define MIFARE_CLASSIC ("Mifare Classic") |
yihui | 3:4189a10038e6 | 9 | |
r4z0r7o3 | 10:f959b305a571 | 10 | const uint8_t keys_len = 9; |
r4z0r7o3 | 10:f959b305a571 | 11 | const uint8_t keys[keys_len][6] = { |
r4z0r7o3 | 10:f959b305a571 | 12 | { 0XFF, 0XFF, 0XFF, 0XFF, 0XFF, 0XFF }, |
r4z0r7o3 | 10:f959b305a571 | 13 | { 0XD3, 0XF7, 0XD3, 0XF7, 0XD3, 0XF7 }, |
r4z0r7o3 | 10:f959b305a571 | 14 | { 0XA0, 0XA1, 0XA2, 0XA3, 0XA4, 0XA5 }, |
r4z0r7o3 | 10:f959b305a571 | 15 | { 0XB0, 0XB1, 0XB2, 0XB3, 0XB4, 0XB5 }, |
r4z0r7o3 | 10:f959b305a571 | 16 | { 0X4D, 0X3A, 0X99, 0XC3, 0X51, 0XDD }, |
r4z0r7o3 | 10:f959b305a571 | 17 | { 0X1A, 0X98, 0X2C, 0X7E, 0X45, 0X9A }, |
r4z0r7o3 | 10:f959b305a571 | 18 | { 0XAA, 0XBB, 0XCC, 0XDD, 0XEE, 0XFF }, |
r4z0r7o3 | 10:f959b305a571 | 19 | { 0X00, 0X00, 0X00, 0X00, 0X00, 0X00 }, |
r4z0r7o3 | 10:f959b305a571 | 20 | { 0XAB, 0XCD, 0XEF, 0X12, 0X34, 0X56 }, |
r4z0r7o3 | 10:f959b305a571 | 21 | }; |
r4z0r7o3 | 10:f959b305a571 | 22 | |
yihui | 3:4189a10038e6 | 23 | MifareClassic::MifareClassic(PN532& nfcShield) |
yihui | 3:4189a10038e6 | 24 | { |
yihui | 3:4189a10038e6 | 25 | _nfcShield = &nfcShield; |
yihui | 3:4189a10038e6 | 26 | } |
yihui | 3:4189a10038e6 | 27 | |
yihui | 3:4189a10038e6 | 28 | MifareClassic::~MifareClassic() |
yihui | 3:4189a10038e6 | 29 | { |
yihui | 3:4189a10038e6 | 30 | } |
yihui | 3:4189a10038e6 | 31 | |
yihui | 3:4189a10038e6 | 32 | NfcTag MifareClassic::read(uint8_t *uid, unsigned int uidLength) |
yihui | 3:4189a10038e6 | 33 | { |
yihui | 3:4189a10038e6 | 34 | int currentBlock = 4; |
yihui | 3:4189a10038e6 | 35 | int messageStartIndex = 0; |
yihui | 3:4189a10038e6 | 36 | int messageLength = 0; |
yihui | 3:4189a10038e6 | 37 | uint8_t data[BLOCK_SIZE]; |
yihui | 3:4189a10038e6 | 38 | |
yihui | 3:4189a10038e6 | 39 | // read first block to get message length |
r4z0r7o3 | 10:f959b305a571 | 40 | int success = 0; |
r4z0r7o3 | 10:f959b305a571 | 41 | for (uint8_t i=0; i < keys_len; i++) { |
r4z0r7o3 | 10:f959b305a571 | 42 | success = _nfcShield->mifareclassic_AuthenticateBlock(uid, uidLength, currentBlock, 0, keys[i]); |
r4z0r7o3 | 10:f959b305a571 | 43 | if (success) |
r4z0r7o3 | 10:f959b305a571 | 44 | break; |
r4z0r7o3 | 10:f959b305a571 | 45 | } |
r4z0r7o3 | 10:f959b305a571 | 46 | |
yihui | 3:4189a10038e6 | 47 | if (success) |
yihui | 3:4189a10038e6 | 48 | { |
yihui | 3:4189a10038e6 | 49 | success = _nfcShield->mifareclassic_ReadDataBlock(currentBlock, data); |
yihui | 3:4189a10038e6 | 50 | if (success) |
yihui | 3:4189a10038e6 | 51 | { |
yihui | 3:4189a10038e6 | 52 | if (!decodeTlv(data, messageLength, messageStartIndex)) { |
yihui | 3:4189a10038e6 | 53 | return NfcTag(uid, uidLength, "ERROR"); // TODO should the error message go in NfcTag? |
yihui | 3:4189a10038e6 | 54 | } |
yihui | 3:4189a10038e6 | 55 | } |
yihui | 3:4189a10038e6 | 56 | else |
yihui | 3:4189a10038e6 | 57 | { |
yihui | 3:4189a10038e6 | 58 | DMSG("Error. Failed read block "); |
yihui | 3:4189a10038e6 | 59 | DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 60 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 61 | return NfcTag(uid, uidLength, MIFARE_CLASSIC); |
yihui | 3:4189a10038e6 | 62 | } |
yihui | 3:4189a10038e6 | 63 | } |
yihui | 3:4189a10038e6 | 64 | else |
yihui | 3:4189a10038e6 | 65 | { |
r4z0r7o3 | 10:f959b305a571 | 66 | DMSG("Tag is not NDEF formatted.\n"); |
yihui | 3:4189a10038e6 | 67 | // TODO set tag.isFormatted = false |
yihui | 3:4189a10038e6 | 68 | return NfcTag(uid, uidLength, MIFARE_CLASSIC); |
yihui | 3:4189a10038e6 | 69 | } |
yihui | 3:4189a10038e6 | 70 | |
yihui | 3:4189a10038e6 | 71 | // this should be nested in the message length loop |
yihui | 3:4189a10038e6 | 72 | int index = 0; |
yihui | 3:4189a10038e6 | 73 | int bufferSize = getBufferSize(messageLength); |
yihui | 3:4189a10038e6 | 74 | uint8_t buffer[bufferSize]; |
yihui | 3:4189a10038e6 | 75 | |
yihui | 3:4189a10038e6 | 76 | #ifdef MIFARE_CLASSIC_DEBUG |
yihui | 3:4189a10038e6 | 77 | DMSG("Message Length "); |
yihui | 3:4189a10038e6 | 78 | DMSG_INT(messageLength); |
yihui | 3:4189a10038e6 | 79 | DMSG("Buffer Size "); |
yihui | 3:4189a10038e6 | 80 | DMSG_INT(bufferSize); |
r4z0r7o3 | 10:f959b305a571 | 81 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 82 | #endif |
yihui | 3:4189a10038e6 | 83 | |
yihui | 3:4189a10038e6 | 84 | while (index < bufferSize) |
yihui | 3:4189a10038e6 | 85 | { |
yihui | 3:4189a10038e6 | 86 | |
yihui | 3:4189a10038e6 | 87 | // authenticate on every sector |
yihui | 3:4189a10038e6 | 88 | if (_nfcShield->mifareclassic_IsFirstBlock(currentBlock)) |
yihui | 3:4189a10038e6 | 89 | { |
r4z0r7o3 | 10:f959b305a571 | 90 | int success = 0; |
r4z0r7o3 | 10:f959b305a571 | 91 | for (uint8_t i=0; i < keys_len; i++) { |
r4z0r7o3 | 10:f959b305a571 | 92 | success = _nfcShield->mifareclassic_AuthenticateBlock(uid, uidLength, currentBlock, 0, keys[i]); |
r4z0r7o3 | 10:f959b305a571 | 93 | if (success) |
r4z0r7o3 | 10:f959b305a571 | 94 | break; |
r4z0r7o3 | 10:f959b305a571 | 95 | } |
r4z0r7o3 | 10:f959b305a571 | 96 | |
yihui | 3:4189a10038e6 | 97 | if (!success) |
yihui | 3:4189a10038e6 | 98 | { |
yihui | 3:4189a10038e6 | 99 | DMSG("Error. Block Authentication failed for "); |
yihui | 3:4189a10038e6 | 100 | DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 101 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 102 | // TODO error handling |
yihui | 3:4189a10038e6 | 103 | } |
yihui | 3:4189a10038e6 | 104 | } |
yihui | 3:4189a10038e6 | 105 | |
yihui | 3:4189a10038e6 | 106 | // read the data |
yihui | 3:4189a10038e6 | 107 | success = _nfcShield->mifareclassic_ReadDataBlock(currentBlock, &buffer[index]); |
yihui | 3:4189a10038e6 | 108 | if (success) |
yihui | 3:4189a10038e6 | 109 | { |
yihui | 3:4189a10038e6 | 110 | #ifdef MIFARE_CLASSIC_DEBUG |
yihui | 3:4189a10038e6 | 111 | DMSG("Block "); |
yihui | 3:4189a10038e6 | 112 | DMSG_INT(currentBlock); |
yihui | 3:4189a10038e6 | 113 | _nfcShield->PrintHexChar(&buffer[index], BLOCK_SIZE); |
r4z0r7o3 | 10:f959b305a571 | 114 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 115 | #endif |
yihui | 3:4189a10038e6 | 116 | } |
yihui | 3:4189a10038e6 | 117 | else |
yihui | 3:4189a10038e6 | 118 | { |
yihui | 3:4189a10038e6 | 119 | DMSG("Read failed "); |
yihui | 3:4189a10038e6 | 120 | DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 121 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 122 | // TODO handle errors here |
yihui | 3:4189a10038e6 | 123 | } |
yihui | 3:4189a10038e6 | 124 | |
yihui | 3:4189a10038e6 | 125 | index += BLOCK_SIZE; |
yihui | 3:4189a10038e6 | 126 | currentBlock++; |
yihui | 3:4189a10038e6 | 127 | |
yihui | 3:4189a10038e6 | 128 | // skip the trailer block |
yihui | 3:4189a10038e6 | 129 | if (_nfcShield->mifareclassic_IsTrailerBlock(currentBlock)) |
yihui | 3:4189a10038e6 | 130 | { |
yihui | 3:4189a10038e6 | 131 | #ifdef MIFARE_CLASSIC_DEBUG |
yihui | 3:4189a10038e6 | 132 | DMSG("Skipping block "); |
yihui | 3:4189a10038e6 | 133 | DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 134 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 135 | #endif |
yihui | 3:4189a10038e6 | 136 | currentBlock++; |
yihui | 3:4189a10038e6 | 137 | } |
yihui | 3:4189a10038e6 | 138 | } |
yihui | 3:4189a10038e6 | 139 | |
yihui | 3:4189a10038e6 | 140 | return NfcTag(uid, uidLength, MIFARE_CLASSIC, &buffer[messageStartIndex], messageLength); |
yihui | 3:4189a10038e6 | 141 | } |
yihui | 3:4189a10038e6 | 142 | |
yihui | 3:4189a10038e6 | 143 | int MifareClassic::getBufferSize(int messageLength) |
yihui | 3:4189a10038e6 | 144 | { |
yihui | 3:4189a10038e6 | 145 | |
yihui | 3:4189a10038e6 | 146 | int bufferSize = messageLength; |
yihui | 3:4189a10038e6 | 147 | |
yihui | 3:4189a10038e6 | 148 | // TLV header is 2 or 4 uint8_ts, TLV terminator is 1 uint8_t. |
yihui | 3:4189a10038e6 | 149 | if (messageLength < 0xFF) |
yihui | 3:4189a10038e6 | 150 | { |
yihui | 3:4189a10038e6 | 151 | bufferSize += SHORT_TLV_SIZE + 1; |
yihui | 3:4189a10038e6 | 152 | } |
yihui | 3:4189a10038e6 | 153 | else |
yihui | 3:4189a10038e6 | 154 | { |
yihui | 3:4189a10038e6 | 155 | bufferSize += LONG_TLV_SIZE + 1; |
yihui | 3:4189a10038e6 | 156 | } |
yihui | 3:4189a10038e6 | 157 | |
yihui | 3:4189a10038e6 | 158 | // bufferSize needs to be a multiple of BLOCK_SIZE |
yihui | 3:4189a10038e6 | 159 | if (bufferSize % BLOCK_SIZE != 0) |
yihui | 3:4189a10038e6 | 160 | { |
yihui | 3:4189a10038e6 | 161 | bufferSize = ((bufferSize / BLOCK_SIZE) + 1) * BLOCK_SIZE; |
yihui | 3:4189a10038e6 | 162 | } |
yihui | 3:4189a10038e6 | 163 | |
yihui | 3:4189a10038e6 | 164 | return bufferSize; |
yihui | 3:4189a10038e6 | 165 | } |
yihui | 3:4189a10038e6 | 166 | |
yihui | 3:4189a10038e6 | 167 | // skip null tlvs (0x0) before the real message |
yihui | 3:4189a10038e6 | 168 | // technically unlimited null tlvs, but we assume |
yihui | 3:4189a10038e6 | 169 | // T & L of TLV in the first block we read |
yihui | 3:4189a10038e6 | 170 | int MifareClassic::getNdefStartIndex(uint8_t *data) |
yihui | 3:4189a10038e6 | 171 | { |
yihui | 3:4189a10038e6 | 172 | |
yihui | 3:4189a10038e6 | 173 | for (int i = 0; i < BLOCK_SIZE; i++) |
yihui | 3:4189a10038e6 | 174 | { |
yihui | 3:4189a10038e6 | 175 | if (data[i] == 0x0) |
yihui | 3:4189a10038e6 | 176 | { |
yihui | 3:4189a10038e6 | 177 | // do nothing, skip |
yihui | 3:4189a10038e6 | 178 | } |
yihui | 3:4189a10038e6 | 179 | else if (data[i] == 0x3) |
yihui | 3:4189a10038e6 | 180 | { |
yihui | 3:4189a10038e6 | 181 | return i; |
yihui | 3:4189a10038e6 | 182 | } |
yihui | 3:4189a10038e6 | 183 | else |
yihui | 3:4189a10038e6 | 184 | { |
yihui | 3:4189a10038e6 | 185 | DMSG("Unknown TLV "); |
yihui | 3:4189a10038e6 | 186 | DMSG_HEX(data[i]); |
r4z0r7o3 | 10:f959b305a571 | 187 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 188 | return -2; |
yihui | 3:4189a10038e6 | 189 | } |
yihui | 3:4189a10038e6 | 190 | } |
yihui | 3:4189a10038e6 | 191 | |
yihui | 3:4189a10038e6 | 192 | return -1; |
yihui | 3:4189a10038e6 | 193 | } |
yihui | 3:4189a10038e6 | 194 | |
yihui | 3:4189a10038e6 | 195 | // Decode the NDEF data length from the Mifare TLV |
yihui | 3:4189a10038e6 | 196 | // Leading null TLVs (0x0) are skipped |
yihui | 3:4189a10038e6 | 197 | // Assuming T & L of TLV will be in the first block |
yihui | 3:4189a10038e6 | 198 | // messageLength and messageStartIndex written to the parameters |
yihui | 3:4189a10038e6 | 199 | // success or failure status is returned |
yihui | 3:4189a10038e6 | 200 | // |
yihui | 3:4189a10038e6 | 201 | // { 0x3, LENGTH } |
yihui | 3:4189a10038e6 | 202 | // { 0x3, 0xFF, LENGTH, LENGTH } |
yihui | 3:4189a10038e6 | 203 | bool MifareClassic::decodeTlv(uint8_t *data, int &messageLength, int &messageStartIndex) |
yihui | 3:4189a10038e6 | 204 | { |
yihui | 3:4189a10038e6 | 205 | int i = getNdefStartIndex(data); |
yihui | 3:4189a10038e6 | 206 | |
yihui | 3:4189a10038e6 | 207 | if (i < 0 || data[i] != 0x3) |
yihui | 3:4189a10038e6 | 208 | { |
r4z0r7o3 | 10:f959b305a571 | 209 | DMSG("Error. Can't decode message length.\n"); |
yihui | 3:4189a10038e6 | 210 | return false; |
yihui | 3:4189a10038e6 | 211 | } |
yihui | 3:4189a10038e6 | 212 | else |
yihui | 3:4189a10038e6 | 213 | { |
yihui | 3:4189a10038e6 | 214 | if (data[i+1] == 0xFF) |
yihui | 3:4189a10038e6 | 215 | { |
yihui | 3:4189a10038e6 | 216 | messageLength = ((0xFF & data[i+2]) << 8) | (0xFF & data[i+3]); |
yihui | 3:4189a10038e6 | 217 | messageStartIndex = i + LONG_TLV_SIZE; |
yihui | 3:4189a10038e6 | 218 | } |
yihui | 3:4189a10038e6 | 219 | else |
yihui | 3:4189a10038e6 | 220 | { |
yihui | 3:4189a10038e6 | 221 | messageLength = data[i+1]; |
yihui | 3:4189a10038e6 | 222 | messageStartIndex = i + SHORT_TLV_SIZE; |
yihui | 3:4189a10038e6 | 223 | } |
yihui | 3:4189a10038e6 | 224 | } |
yihui | 3:4189a10038e6 | 225 | |
yihui | 3:4189a10038e6 | 226 | return true; |
yihui | 3:4189a10038e6 | 227 | } |
yihui | 3:4189a10038e6 | 228 | |
yihui | 3:4189a10038e6 | 229 | bool MifareClassic::write(NdefMessage& m, uint8_t * uid, unsigned int uidLength) |
yihui | 3:4189a10038e6 | 230 | { |
yihui | 3:4189a10038e6 | 231 | |
yihui | 3:4189a10038e6 | 232 | uint8_t encoded[m.getEncodedSize()]; |
yihui | 3:4189a10038e6 | 233 | m.encode(encoded); |
yihui | 3:4189a10038e6 | 234 | |
yihui | 3:4189a10038e6 | 235 | uint8_t buffer[getBufferSize(sizeof(encoded))]; |
yihui | 3:4189a10038e6 | 236 | memset(buffer, 0, sizeof(buffer)); |
yihui | 3:4189a10038e6 | 237 | |
yihui | 3:4189a10038e6 | 238 | #ifdef MIFARE_CLASSIC_DEBUG |
r4z0r7o3 | 10:f959b305a571 | 239 | DMSG("sizeof(encoded) ");DMSG_INT(sizeof(encoded)); |
r4z0r7o3 | 10:f959b305a571 | 240 | DMSG("sizeof(buffer) ");DMSG_INT(sizeof(buffer)); |
r4z0r7o3 | 10:f959b305a571 | 241 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 242 | #endif |
yihui | 3:4189a10038e6 | 243 | |
yihui | 3:4189a10038e6 | 244 | if (sizeof(encoded) < 0xFF) |
yihui | 3:4189a10038e6 | 245 | { |
yihui | 3:4189a10038e6 | 246 | buffer[0] = 0x3; |
yihui | 3:4189a10038e6 | 247 | buffer[1] = sizeof(encoded); |
yihui | 3:4189a10038e6 | 248 | memcpy(&buffer[2], encoded, sizeof(encoded)); |
yihui | 3:4189a10038e6 | 249 | buffer[2+sizeof(encoded)] = 0xFE; // terminator |
yihui | 3:4189a10038e6 | 250 | } |
yihui | 3:4189a10038e6 | 251 | else |
yihui | 3:4189a10038e6 | 252 | { |
yihui | 3:4189a10038e6 | 253 | buffer[0] = 0x3; |
yihui | 3:4189a10038e6 | 254 | buffer[1] = 0xFF; |
yihui | 3:4189a10038e6 | 255 | buffer[2] = ((sizeof(encoded) >> 8) & 0xFF); |
yihui | 3:4189a10038e6 | 256 | buffer[3] = (sizeof(encoded) & 0xFF); |
yihui | 3:4189a10038e6 | 257 | memcpy(&buffer[4], encoded, sizeof(encoded)); |
yihui | 3:4189a10038e6 | 258 | buffer[4+sizeof(encoded)] = 0xFE; // terminator |
yihui | 3:4189a10038e6 | 259 | } |
yihui | 3:4189a10038e6 | 260 | |
yihui | 3:4189a10038e6 | 261 | // Write to tag |
yihui | 3:4189a10038e6 | 262 | int index = 0; |
yihui | 3:4189a10038e6 | 263 | int currentBlock = 4; |
yihui | 3:4189a10038e6 | 264 | |
yihui | 3:4189a10038e6 | 265 | while (index < sizeof(buffer)) |
yihui | 3:4189a10038e6 | 266 | { |
yihui | 3:4189a10038e6 | 267 | |
yihui | 3:4189a10038e6 | 268 | if (_nfcShield->mifareclassic_IsFirstBlock(currentBlock)) |
yihui | 3:4189a10038e6 | 269 | { |
r4z0r7o3 | 10:f959b305a571 | 270 | int success = 0; |
r4z0r7o3 | 10:f959b305a571 | 271 | for (uint8_t i=0; i < keys_len; i++) { |
r4z0r7o3 | 10:f959b305a571 | 272 | success = _nfcShield->mifareclassic_AuthenticateBlock(uid, uidLength, currentBlock, 0, keys[i]); |
r4z0r7o3 | 10:f959b305a571 | 273 | if (success) |
r4z0r7o3 | 10:f959b305a571 | 274 | break; |
r4z0r7o3 | 10:f959b305a571 | 275 | } |
yihui | 3:4189a10038e6 | 276 | if (!success) |
yihui | 3:4189a10038e6 | 277 | { |
yihui | 3:4189a10038e6 | 278 | DMSG("Error. Block Authentication failed for ");DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 279 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 280 | return false; |
yihui | 3:4189a10038e6 | 281 | } |
yihui | 3:4189a10038e6 | 282 | } |
yihui | 3:4189a10038e6 | 283 | int write_success = _nfcShield->mifareclassic_WriteDataBlock (currentBlock, &buffer[index]); |
yihui | 3:4189a10038e6 | 284 | if (write_success) |
yihui | 3:4189a10038e6 | 285 | { |
yihui | 3:4189a10038e6 | 286 | #ifdef MIFARE_CLASSIC_DEBUG |
r4z0r7o3 | 10:f959b305a571 | 287 | DMSG("Wrote block ");DMSG_INT(currentBlock);DMSG(" - "); |
yihui | 3:4189a10038e6 | 288 | _nfcShield->PrintHexChar(&buffer[index], BLOCK_SIZE); |
r4z0r7o3 | 10:f959b305a571 | 289 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 290 | #endif |
yihui | 3:4189a10038e6 | 291 | } |
yihui | 3:4189a10038e6 | 292 | else |
yihui | 3:4189a10038e6 | 293 | { |
yihui | 3:4189a10038e6 | 294 | DMSG("Write failed ");DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 295 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 296 | return false; |
yihui | 3:4189a10038e6 | 297 | } |
yihui | 3:4189a10038e6 | 298 | index += BLOCK_SIZE; |
yihui | 3:4189a10038e6 | 299 | currentBlock++; |
yihui | 3:4189a10038e6 | 300 | |
yihui | 3:4189a10038e6 | 301 | if (_nfcShield->mifareclassic_IsTrailerBlock(currentBlock)) |
yihui | 3:4189a10038e6 | 302 | { |
yihui | 3:4189a10038e6 | 303 | // can't write to trailer block |
yihui | 3:4189a10038e6 | 304 | #ifdef MIFARE_CLASSIC_DEBUG |
r4z0r7o3 | 10:f959b305a571 | 305 | DMSG("Skipping block ");DMSG_INT(currentBlock); |
r4z0r7o3 | 10:f959b305a571 | 306 | DMSG("\n"); |
yihui | 3:4189a10038e6 | 307 | #endif |
yihui | 3:4189a10038e6 | 308 | currentBlock++; |
yihui | 3:4189a10038e6 | 309 | } |
yihui | 3:4189a10038e6 | 310 | |
yihui | 3:4189a10038e6 | 311 | } |
yihui | 3:4189a10038e6 | 312 | |
yihui | 3:4189a10038e6 | 313 | return true; |
yihui | 3:4189a10038e6 | 314 | } |