git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlfem4x.c

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
   3 //
   4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
   5 // at your option, any later version. See the LICENSE.txt file for the text of
   6 // the license.
   7 //-----------------------------------------------------------------------------
   8 // Low frequency EM4x commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <inttypes.h>
  14 #include "cmdlfem4x.h"
  15
  16 uint64_t g_em410xid = 0;
  17
  18 static int CmdHelp(const char *Cmd);
  19
  20 int CmdEMdemodASK(const char *Cmd)
  21 {
  22         char cmdp = param_getchar(Cmd, 0);
  23         int findone = (cmdp == '1') ? 1 : 0;
  24         UsbCommand c={CMD_EM410X_DEMOD};
  25         c.arg[0]=findone;
  26         SendCommand(&c);
  27         return 0;
  28 }
  29
  30 /* Read the ID of an EM410x tag.
  31  * Format:
  32  *   1111 1111 1           <-- standard non-repeatable header
  33  *   XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID
  34  *   ....
  35  *   CCCC                  <-- each bit here is parity for the 10 bits above in corresponding column
  36  *   0                     <-- stop bit, end of tag
  37  */
  38 int CmdEM410xRead(const char *Cmd)
  39 {
  40         uint32_t hi=0;
  41         uint64_t lo=0;
  42
  43         if(!AskEm410xDemod("", &hi, &lo, false)) return 0;
  44         PrintAndLog("EM410x pattern found: ");
  45         printEM410x(hi, lo);
  46         if (hi){
  47                 PrintAndLog ("EM410x XL pattern found");
  48                 return 0;
  49         }
  50         g_em410xid = lo;
  51         return 1;
  52 }
  53
  54 // emulate an EM410X tag
  55 int CmdEM410xSim(const char *Cmd)
  56 {
  57         int i, n, j, binary[4], parity[4];
  58         uint8_t uid[5] = {0x00};
  59
  60         char cmdp = param_getchar(Cmd, 0);
  61         if (cmdp == 'h' || cmdp == 'H') {
  62                 PrintAndLog("Usage:  lf em4x em410xsim <UID> <clock>");
  63                 PrintAndLog("");
  64                 PrintAndLog("     sample: lf em4x em410xsim 0F0368568B");
  65                 return 0;
  66         }
  67         /* clock is 64 in EM410x tags */
  68         uint8_t clock = 64;
  69
  70         if (param_gethex(Cmd, 0, uid, 10)) {
  71                 PrintAndLog("UID must include 10 HEX symbols");
  72                 return 0;
  73         }
  74         param_getdec(Cmd, 1, &clock);
  75
  76         PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X  clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);
  77         PrintAndLog("Press pm3-button to about simulation");
  78
  79         /* clear our graph */
  80         ClearGraph(0);
  81
  82         /* write 9 start bits */
  83         for (i = 0; i < 9; i++)
  84                 AppendGraph(0, clock, 1);
  85
  86         /* for each hex char */
  87         parity[0] = parity[1] = parity[2] = parity[3] = 0;
  88         for (i = 0; i < 10; i++)
  89         {
  90                 /* read each hex char */
  91                 sscanf(&Cmd[i], "%1x", &n);
  92                 for (j = 3; j >= 0; j--, n/= 2)
  93                         binary[j] = n % 2;
  94
  95                 /* append each bit */
  96                 AppendGraph(0, clock, binary[0]);
  97                 AppendGraph(0, clock, binary[1]);
  98                 AppendGraph(0, clock, binary[2]);
  99                 AppendGraph(0, clock, binary[3]);
 100
 101                 /* append parity bit */
 102                 AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);
 103
 104                 /* keep track of column parity */
 105                 parity[0] ^= binary[0];
 106                 parity[1] ^= binary[1];
 107                 parity[2] ^= binary[2];
 108                 parity[3] ^= binary[3];
 109         }
 110
 111         /* parity columns */
 112         AppendGraph(0, clock, parity[0]);
 113         AppendGraph(0, clock, parity[1]);
 114         AppendGraph(0, clock, parity[2]);
 115         AppendGraph(0, clock, parity[3]);
 116
 117         /* stop bit */
 118         AppendGraph(1, clock, 0);
 119
 120         CmdLFSim("0"); //240 start_gap.
 121         return 0;
 122 }
 123
 124 /* Function is equivalent of lf read + data samples + em410xread
 125  * looped until an EM410x tag is detected
 126  *
 127  * Why is CmdSamples("16000")?
 128  *  TBD: Auto-grow sample size based on detected sample rate.  IE: If the
 129  *       rate gets lower, then grow the number of samples
 130  *  Changed by martin, 4000 x 4 = 16000,
 131  *  see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235
 132 */
 133 int CmdEM410xWatch(const char *Cmd)
 134 {
 135         do {
 136                 if (ukbhit()) {
 137                         printf("\naborted via keyboard!\n");
 138                         break;
 139                 }
 140
 141                 CmdLFRead("s");
 142                 getSamples("8201",true); //capture enough to get 2 complete preambles (4096*2+9)
 143         } while (!CmdEM410xRead(""));
 144
 145         return 0;
 146 }
 147
 148 //currently only supports manchester modulations
 149 // todo: helptext
 150 int CmdEM410xWatchnSpoof(const char *Cmd)
 151 {
 152         // loops if the captured ID was in XL-format.
 153         CmdEM410xWatch(Cmd);
 154         PrintAndLog("# Replaying captured ID: %llu", g_em410xid);
 155         CmdLFaskSim("");
 156         return 0;
 157 }
 158
 159 int CmdEM410xWrite(const char *Cmd)
 160 {
 161         uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value
 162         int card = 0xFF; // invalid card value
 163         uint32_t clock = 0; // invalid clock value
 164
 165         sscanf(Cmd, "%" PRIx64 " %d %d", &id, &card, &clock);
 166
 167         // Check ID
 168         if (id == 0xFFFFFFFFFFFFFFFF) {
 169                 PrintAndLog("Error! ID is required.\n");
 170                 return 0;
 171         }
 172         if (id >= 0x10000000000) {
 173                 PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");
 174                 return 0;
 175         }
 176
 177         // Check Card
 178         if (card == 0xFF) {
 179                 PrintAndLog("Error! Card type required.\n");
 180                 return 0;
 181         }
 182         if (card < 0) {
 183                 PrintAndLog("Error! Bad card type selected.\n");
 184                 return 0;
 185         }
 186
 187         // Check Clock
 188                 // Default: 64
 189         if (clock == 0)
 190                 clock = 64;
 191
 192         // Allowed clock rates: 16, 32, 40 and 64
 193         if ((clock != 16) && (clock != 32) && (clock != 64) && (clock != 40)) {
 194                 PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32, 40 and 64.\n", clock);
 195                 return 0;
 196         }
 197
 198         if (card == 1) {
 199                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);
 200                 // NOTE: We really should pass the clock in as a separate argument, but to
 201                 //   provide for backwards-compatibility for older firmware, and to avoid
 202                 //   having to add another argument to CMD_EM410X_WRITE_TAG, we just store
 203                 //   the clock rate in bits 8-15 of the card value
 204                 card = (card & 0xFF) | ((clock << 8) & 0xFF00);
 205         }       else if (card == 0) {
 206                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);
 207                 card = (card & 0xFF) | ((clock << 8) & 0xFF00);
 208         } else {
 209                 PrintAndLog("Error! Bad card type selected.\n");
 210                 return 0;
 211         }
 212
 213         UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};
 214         SendCommand(&c);
 215         return 0;
 216 }
 217
 218 bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
 219 {
 220         if (rows*cols>size) return false;
 221         uint8_t colP=0;
 222         //assume last col is a parity and do not test
 223         for (uint8_t colNum = 0; colNum < cols-1; colNum++) {
 224                 for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {
 225                         colP ^= BitStream[(rowNum*cols)+colNum];
 226                 }
 227                 if (colP != pType) return false;
 228         }
 229         return true;
 230 }
 231
 232 bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)
 233 {
 234         if (rows*cols>size) return false;
 235         uint8_t rowP=0;
 236         //assume last row is a parity row and do not test
 237         for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {
 238                 for (uint8_t colNum = 0; colNum < cols; colNum++) {
 239                         rowP ^= BitStream[(rowNum*cols)+colNum];
 240                 }
 241                 if (rowP != pType) return false;
 242         }
 243         return true;
 244 }
 245
 246 uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)
 247 {
 248         if (size<45) return 0;
 249         uint32_t code = bytebits_to_byte(BitStream,8);
 250         code = code<<8 | bytebits_to_byte(BitStream+9,8);
 251         code = code<<8 | bytebits_to_byte(BitStream+18,8);
 252         code = code<<8 | bytebits_to_byte(BitStream+27,8);
 253         if (verbose || g_debugMode){
 254                 for (uint8_t i = 0; i<5; i++){
 255                         if (i == 4) PrintAndLog(""); //parity byte spacer
 256                         PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",
 257                             BitStream[i*9],
 258                             BitStream[i*9+1],
 259                             BitStream[i*9+2],
 260                             BitStream[i*9+3],
 261                             BitStream[i*9+4],
 262                             BitStream[i*9+5],
 263                             BitStream[i*9+6],
 264                             BitStream[i*9+7],
 265                             BitStream[i*9+8],
 266                             bytebits_to_byte(BitStream+i*9,8)
 267                         );
 268                 }
 269                 if (pTest)
 270                         PrintAndLog("Parity Passed");
 271                 else
 272                         PrintAndLog("Parity Failed");
 273         }
 274         return code;
 275 }
 276 /* Read the transmitted data of an EM4x50 tag
 277  * Format:
 278  *
 279  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 280  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 281  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 282  *  XXXXXXXX [row parity bit (even)] <- 8 bits plus parity
 283  *  CCCCCCCC                         <- column parity bits
 284  *  0                                <- stop bit
 285  *  LW                               <- Listen Window
 286  *
 287  * This pattern repeats for every block of data being transmitted.
 288  * Transmission starts with two Listen Windows (LW - a modulated
 289  * pattern of 320 cycles each (32/32/128/64/64)).
 290  *
 291  * Note that this data may or may not be the UID. It is whatever data
 292  * is stored in the blocks defined in the control word First and Last
 293  * Word Read values. UID is stored in block 32.
 294  */
 295  //completed by Marshmellow
 296 int EM4x50Read(const char *Cmd, bool verbose)
 297 {
 298         uint8_t fndClk[] = {8,16,32,40,50,64,128};
 299         int clk = 0;
 300         int invert = 0;
 301         int tol = 0;
 302         int i, j, startblock, skip, block, start, end, low, high, minClk;
 303         bool complete = false;
 304         int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];
 305         uint32_t Code[6];
 306         char tmp[6];
 307         char tmp2[20];
 308         int phaseoff;
 309         high = low = 0;
 310         memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);
 311
 312         // get user entry if any
 313         sscanf(Cmd, "%i %i", &clk, &invert);
 314
 315         // save GraphBuffer - to restore it later
 316         save_restoreGB(1);
 317
 318         // first get high and low values
 319         for (i = 0; i < GraphTraceLen; i++) {
 320                 if (GraphBuffer[i] > high)
 321                         high = GraphBuffer[i];
 322                 else if (GraphBuffer[i] < low)
 323                         low = GraphBuffer[i];
 324         }
 325
 326         i = 0;
 327         j = 0;
 328         minClk = 255;
 329         // get to first full low to prime loop and skip incomplete first pulse
 330         while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
 331                 ++i;
 332         while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 333                 ++i;
 334         skip = i;
 335
 336         // populate tmpbuff buffer with pulse lengths
 337         while (i < GraphTraceLen) {
 338                 // measure from low to low
 339                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 340                         ++i;
 341                 start= i;
 342                 while ((GraphBuffer[i] < high) && (i < GraphTraceLen))
 343                         ++i;
 344                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))
 345                         ++i;
 346                 if (j>=(MAX_GRAPH_TRACE_LEN/64)) {
 347                         break;
 348                 }
 349                 tmpbuff[j++]= i - start;
 350                 if (i-start < minClk && i < GraphTraceLen) {
 351                         minClk = i - start;
 352                 }
 353         }
 354         // set clock
 355         if (!clk) {
 356                 for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {
 357                         tol = fndClk[clkCnt]/8;
 358                         if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) {
 359                                 clk=fndClk[clkCnt];
 360                                 break;
 361                         }
 362                 }
 363                 if (!clk) return 0;
 364         } else tol = clk/8;
 365
 366         // look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2)
 367         start = -1;
 368         for (i= 0; i < j - 4 ; ++i) {
 369                 skip += tmpbuff[i];
 370                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
 371                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
 372                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
 373                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
 374                                         {
 375                                                 start= i + 4;
 376                                                 break;
 377                                         }
 378         }
 379         startblock = i + 4;
 380
 381         // skip over the remainder of LW
 382         skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;
 383         if (tmpbuff[i+3]>clk)
 384                 phaseoff = tmpbuff[i+3]-clk;
 385         else
 386                 phaseoff = 0;
 387         // now do it again to find the end
 388         end = skip;
 389         for (i += 3; i < j - 4 ; ++i) {
 390                 end += tmpbuff[i];
 391                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks
 392                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks
 393                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks
 394                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following
 395                                         {
 396                                                 complete= true;
 397                                                 break;
 398                                         }
 399         }
 400         end = i;
 401         // report back
 402         if (verbose || g_debugMode) {
 403                 if (start >= 0) {
 404                         PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");
 405                 }       else {
 406                         PrintAndLog("No data found!, clock tried:%d",clk);
 407                         PrintAndLog("Try again with more samples.");
 408                         PrintAndLog("  or after a 'data askedge' command to clean up the read");
 409                         return 0;
 410                 }
 411         } else if (start < 0) return 0;
 412         start = skip;
 413         snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);
 414         // get rid of leading crap
 415         snprintf(tmp, sizeof(tmp), "%i", skip);
 416         CmdLtrim(tmp);
 417         bool pTest;
 418         bool AllPTest = true;
 419         // now work through remaining buffer printing out data blocks
 420         block = 0;
 421         i = startblock;
 422         while (block < 6) {
 423                 if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);
 424                 skip = phaseoff;
 425
 426                 // look for LW before start of next block
 427                 for ( ; i < j - 4 ; ++i) {
 428                         skip += tmpbuff[i];
 429                         if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)
 430                                 if (tmpbuff[i+1] >= clk-tol)
 431                                         break;
 432                 }
 433                 if (i >= j-4) break; //next LW not found
 434                 skip += clk;
 435                 if (tmpbuff[i+1]>clk)
 436                         phaseoff = tmpbuff[i+1]-clk;
 437                 else
 438                         phaseoff = 0;
 439                 i += 2;
 440                 if (ASKDemod(tmp2, false, false, 1) < 1) {
 441                         save_restoreGB(0);
 442                         return 0;
 443                 }
 444                 //set DemodBufferLen to just one block
 445                 DemodBufferLen = skip/clk;
 446                 //test parities
 447                 pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);
 448                 pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);
 449                 AllPTest &= pTest;
 450                 //get output
 451                 Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);
 452                 if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);
 453                 //skip to start of next block
 454                 snprintf(tmp,sizeof(tmp),"%i",skip);
 455                 CmdLtrim(tmp);
 456                 block++;
 457                 if (i >= end) break; //in case chip doesn't output 6 blocks
 458         }
 459         //print full code:
 460         if (verbose || g_debugMode || AllPTest){
 461                 if (!complete) {
 462                         PrintAndLog("*** Warning!");
 463                         PrintAndLog("Partial data - no end found!");
 464                         PrintAndLog("Try again with more samples.");
 465                 }
 466                 PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);
 467                 end = block;
 468                 for (block=0; block < end; block++){
 469                         PrintAndLog("Block %d: %08x",block,Code[block]);
 470                 }
 471                 if (AllPTest) {
 472                         PrintAndLog("Parities Passed");
 473                 } else {
 474                         PrintAndLog("Parities Failed");
 475                         PrintAndLog("Try cleaning the read samples with 'data askedge'");
 476                 }
 477         }
 478
 479         //restore GraphBuffer
 480         save_restoreGB(0);
 481         return (int)AllPTest;
 482 }
 483
 484 int CmdEM4x50Read(const char *Cmd)
 485 {
 486         return EM4x50Read(Cmd, true);
 487 }
 488
 489 int CmdReadWord(const char *Cmd)
 490 {
 491         int Word = -1; //default to invalid word
 492         UsbCommand c;
 493
 494         sscanf(Cmd, "%d", &Word);
 495
 496         if ( (Word > 15) | (Word < 0) ) {
 497                 PrintAndLog("Word must be between 0 and 15");
 498                 return 1;
 499         }
 500
 501         PrintAndLog("Reading word %d", Word);
 502
 503         c.cmd = CMD_EM4X_READ_WORD;
 504         c.d.asBytes[0] = 0x0; //Normal mode
 505         c.arg[0] = 0;
 506         c.arg[1] = Word;
 507         c.arg[2] = 0;
 508         SendCommand(&c);
 509         return 0;
 510 }
 511
 512 int CmdReadWordPWD(const char *Cmd)
 513 {
 514         int Word = -1; //default to invalid word
 515         int Password = 0xFFFFFFFF; //default to blank password
 516         UsbCommand c;
 517
 518         sscanf(Cmd, "%d %x", &Word, &Password);
 519
 520         if ( (Word > 15) | (Word < 0) ) {
 521                 PrintAndLog("Word must be between 0 and 15");
 522                 return 1;
 523         }
 524
 525         PrintAndLog("Reading word %d with password %08X", Word, Password);
 526
 527         c.cmd = CMD_EM4X_READ_WORD;
 528         c.d.asBytes[0] = 0x1; //Password mode
 529         c.arg[0] = 0;
 530         c.arg[1] = Word;
 531         c.arg[2] = Password;
 532         SendCommand(&c);
 533         return 0;
 534 }
 535
 536 int CmdWriteWord(const char *Cmd)
 537 {
 538         int Word = 16; //default to invalid block
 539         int Data = 0xFFFFFFFF; //default to blank data
 540         UsbCommand c;
 541
 542         sscanf(Cmd, "%x %d", &Data, &Word);
 543
 544         if (Word > 15) {
 545                 PrintAndLog("Word must be between 0 and 15");
 546                 return 1;
 547         }
 548
 549         PrintAndLog("Writing word %d with data %08X", Word, Data);
 550
 551         c.cmd = CMD_EM4X_WRITE_WORD;
 552         c.d.asBytes[0] = 0x0; //Normal mode
 553         c.arg[0] = Data;
 554         c.arg[1] = Word;
 555         c.arg[2] = 0;
 556         SendCommand(&c);
 557         return 0;
 558 }
 559
 560 int CmdWriteWordPWD(const char *Cmd)
 561 {
 562         int Word = 16; //default to invalid word
 563         int Data = 0xFFFFFFFF; //default to blank data
 564         int Password = 0xFFFFFFFF; //default to blank password
 565         UsbCommand c;
 566
 567         sscanf(Cmd, "%x %d %x", &Data, &Word, &Password);
 568
 569         if (Word > 15) {
 570                 PrintAndLog("Word must be between 0 and 15");
 571                 return 1;
 572         }
 573
 574         PrintAndLog("Writing word %d with data %08X and password %08X", Word, Data, Password);
 575
 576         c.cmd = CMD_EM4X_WRITE_WORD;
 577         c.d.asBytes[0] = 0x1; //Password mode
 578         c.arg[0] = Data;
 579         c.arg[1] = Word;
 580         c.arg[2] = Password;
 581         SendCommand(&c);
 582         return 0;
 583 }
 584
 585 static command_t CommandTable[] =
 586 {
 587         {"help", CmdHelp, 1, "This help"},
 588         {"em410xdemod", CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},
 589         {"em410xread", CmdEM410xRead, 1, "[clock rate] -- Extract ID from EM410x tag in GraphBuffer"},
 590         {"em410xsim", CmdEM410xSim, 0, "<UID> -- Simulate EM410x tag"},
 591         {"em410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},
 592         {"em410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },
 593         {"em410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},
 594         {"em4x50read", CmdEM4x50Read, 1, "Extract data from EM4x50 tag"},
 595         {"readword", CmdReadWord, 1, "<Word> -- Read EM4xxx word data"},
 596         {"readwordPWD", CmdReadWordPWD, 1, "<Word> <Password> -- Read EM4xxx word data in password mode"},
 597         {"writeword", CmdWriteWord, 1, "<Data> <Word> -- Write EM4xxx word data"},
 598         {"writewordPWD", CmdWriteWordPWD, 1, "<Data> <Word> <Password> -- Write EM4xxx word data in password mode"},
 599         {NULL, NULL, 0, NULL}
 600 };
 601
 602 int CmdLFEM4X(const char *Cmd) {
 603         clearCommandBuffer();
 604         CmdsParse(CommandTable, Cmd);
 605         return 0;
 606 }
 607
 608 int CmdHelp(const char *Cmd) {
 609         CmdsHelp(CommandTable);
 610         return 0;
 611 }