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1 //-----------------------------------------------------------------------------

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 //-----------------------------------------------------------------------------

11 #include <stdio.h>

12 #include <string.h>

13 #include <inttypes.h>

14 #include "cmdlfem4x.h"

15 #include "proxmark3.h"

16 #include "ui.h"

17 #include "util.h"

18 #include "data.h"

19 #include "graph.h"

20 #include "cmdparser.h"

21 #include "cmddata.h"

22 #include "cmdlf.h"

23 #include "cmdmain.h"

24 #include "lfdemod.h"

26 uint64_t g_em410xId=0;

 static int CmdHelp(const char *Cmd);

 int CmdEMdemodASK(const char *Cmd)

31 {

         char cmdp = param_getchar(Cmd, 0);

         int findone = (cmdp == '1') ? 1 : 0;

34 UsbCommand c={CMD_EM410X_DEMOD};

         c.arg[0]=findone;

36 SendCommand(&c);

37 return 0;

38 }

40 //by marshmellow

41 //print 64 bit EM410x ID in multiple formats

 void printEM410x(uint32_t hi, uint64_t id)

43 {

44 if (id || hi){

45 uint64_t iii=1;

46 uint64_t id2lo=0;

47 uint32_t ii=0;

48 uint32_t i=0;

                 for (ii=5; ii>0;ii--){

                         for (i=0;i<8;i++){

                                 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));

52 }

53 }

54 if (hi){

55 //output 88 bit em id

                         PrintAndLog("\nEM TAG ID      : %06X%016" PRIX64, hi, id);

57 } else{

58 //output 40 bit em id

                         PrintAndLog("\nEM TAG ID      : %010" PRIX64, id);

                         PrintAndLog("\nPossible de-scramble patterns");

                         PrintAndLog("Unique TAG ID  : %010" PRIX64,  id2lo);

62 PrintAndLog("HoneyWell IdentKey {");

                         PrintAndLog("DEZ 8          : %08" PRIu64,id & 0xFFFFFF);

                         PrintAndLog("DEZ 10         : %010" PRIu64,id & 0xFFFFFFFF);

                         PrintAndLog("DEZ 5.5        : %05lld.%05" PRIu64,(id>>16LL) & 0xFFFF,(id & 0xFFFF));

                         PrintAndLog("DEZ 3.5A       : %03lld.%05" PRIu64,(id>>32ll),(id & 0xFFFF));

                         PrintAndLog("DEZ 3.5B       : %03lld.%05" PRIu64,(id & 0xFF000000) >> 24,(id & 0xFFFF));

                         PrintAndLog("DEZ 3.5C       : %03lld.%05" PRIu64,(id & 0xFF0000) >> 16,(id & 0xFFFF));

                         PrintAndLog("DEZ 14/IK2     : %014" PRIu64,id);

                         PrintAndLog("DEZ 15/IK3     : %015" PRIu64,id2lo);

                         PrintAndLog("DEZ 20/ZK      : %02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64 "%02" PRIu64,

                             (id2lo & 0xf000000000) >> 36,

                             (id2lo & 0x0f00000000) >> 32,

                             (id2lo & 0x00f0000000) >> 28,

                             (id2lo & 0x000f000000) >> 24,

                             (id2lo & 0x0000f00000) >> 20,

                             (id2lo & 0x00000f0000) >> 16,

                             (id2lo & 0x000000f000) >> 12,

                             (id2lo & 0x0000000f00) >> 8,

                             (id2lo & 0x00000000f0) >> 4,

81 (id2lo & 0x000000000f)

82 );

                         uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff))  + 0x143e00;

                         PrintAndLog("}\nOther          : %05" PRIu64 "_%03" PRIu64 "_%08" PRIu64 "",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));  

                         PrintAndLog("Pattern Paxton : %" PRIu64 " [0x%" PRIX64 "]", paxton, paxton);

                         uint32_t p1id = (id & 0xFFFFFF);

                         uint8_t arr[32] = {0x00};

89 int i =0;

90 int j = 23;

                         for (; i < 24; ++i, --j ){

                                 arr[i] = (p1id >> i) & 1;

93 }

95 uint32_t p1 = 0;

                         p1 |= arr[23] << 21;

                         p1 |= arr[22] << 23;

                         p1 |= arr[21] << 20;

                         p1 |= arr[20] << 22;

101

                         p1 |= arr[19] << 18;

                         p1 |= arr[18] << 16;

                         p1 |= arr[17] << 19;

                         p1 |= arr[16] << 17;

106

                         p1 |= arr[15] << 13;

                         p1 |= arr[14] << 15;

                         p1 |= arr[13] << 12;

                         p1 |= arr[12] << 14;

111

                         p1 |= arr[11] << 6;

                         p1 |= arr[10] << 2;

                         p1 |= arr[9]  << 7;

                         p1 |= arr[8]  << 1;

116

                         p1 |= arr[7]  << 0;

                         p1 |= arr[6]  << 8;

                         p1 |= arr[5]  << 11;

                         p1 |= arr[4]  << 3;

121

                         p1 |= arr[3]  << 10;

                         p1 |= arr[2]  << 4;

                         p1 |= arr[1]  << 5;

                         p1 |= arr[0]  << 9;

                         PrintAndLog("Pattern 1      : %d [0x%X]", p1, p1);

127

                         uint16_t sebury1 = id & 0xFFFF;

                         uint8_t  sebury2 = (id >> 16) & 0x7F;

                         uint32_t sebury3 = id & 0x7FFFFF;

                         PrintAndLog("Pattern Sebury : %d %d %d  [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);

132 }

133 }

134 return;

135 }

136

137 /* Read the ID of an EM410x tag.

138 * Format:

139 * 1111 1111 1 <-- standard non-repeatable header

140 * XXXX [row parity bit] <-- 10 rows of 5 bits for our 40 bit tag ID

141 * ....

142 * CCCC <-- each bit here is parity for the 10 bits above in corresponding column

143 * 0 <-- stop bit, end of tag

144 */

 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )

146 {

147 size_t idx = 0;

148 size_t BitLen = DemodBufferLen;

         uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};

         memcpy(BitStream, DemodBuffer, BitLen); 

         if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){

152 //set GraphBuffer for clone or sim command

                 setDemodBuf(BitStream, BitLen, idx);

154 if (g_debugMode){

                         PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);

156 printDemodBuff();

157 }

158 if (verbose){

159 PrintAndLog("EM410x pattern found: ");

160 printEM410x(*hi, *lo);

161 g_em410xId = *lo;

162 }

163 return 1;

164 }

165 return 0;

166 }

167

168 //askdemod then call Em410xdecode

 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)

170 {

171 bool st = true;

         if (!ASKDemod_ext(Cmd, false, false, 1, &st)) return 0;

         return AskEm410xDecode(verbose, hi, lo);

174 }

175

176 //by marshmellow

177 //takes 3 arguments - clock, invert and maxErr as integers

178 //attempts to demodulate ask while decoding manchester

179 //prints binary found and saves in graphbuffer for further commands

 int CmdAskEM410xDemod(const char *Cmd)

181 {

         char cmdp = param_getchar(Cmd, 0);

         if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {

184 PrintAndLog("Usage: lf em 410xdemod [clock] <0|1> [maxError]");

185 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");

186 PrintAndLog(" <invert>, 1 for invert output");

187 PrintAndLog(" [set maximum allowed errors], default = 100.");

188 PrintAndLog("");

189 PrintAndLog(" sample: lf em 410xdemod = demod an EM410x Tag ID from GraphBuffer");

190 PrintAndLog(" : lf em 410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");

191 PrintAndLog(" : lf em 410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");

192 PrintAndLog(" : lf em 410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");

193 PrintAndLog(" : lf em 410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");

194 return 0;

195 }

196 uint64_t lo = 0;

197 uint32_t hi = 0;

         return AskEm410xDemod(Cmd, &hi, &lo, true);

199 }

200

 int usage_lf_em410x_sim(void) {

202 PrintAndLog("Simulating EM410x tag");

203 PrintAndLog("");

204 PrintAndLog("Usage: lf em 410xsim [h] <uid> <clock>");

205 PrintAndLog("Options:");

206 PrintAndLog(" h - this help");

207 PrintAndLog(" uid - uid (10 HEX symbols)");

208 PrintAndLog(" clock - clock (32|64) (optional)");

209 PrintAndLog("samples:");

210 PrintAndLog(" lf em 410xsim 0F0368568B");

211 PrintAndLog(" lf em 410xsim 0F0368568B 32");

212 return 0;

213 }

214

215 // emulate an EM410X tag

 int CmdEM410xSim(const char *Cmd)

217 {

         int i, n, j, binary[4], parity[4];

219

         char cmdp = param_getchar(Cmd, 0);

         uint8_t uid[5] = {0x00};

222

         if (cmdp == 'h' || cmdp == 'H') return usage_lf_em410x_sim();

224 /* clock is 64 in EM410x tags */

225 uint8_t clock = 64;

226

         if (param_gethex(Cmd, 0, uid, 10)) {

228 PrintAndLog("UID must include 10 HEX symbols");

229 return 0;

230 }

         param_getdec(Cmd,1, &clock);

232

         PrintAndLog("Starting simulating UID %02X%02X%02X%02X%02X  clock: %d", uid[0],uid[1],uid[2],uid[3],uid[4],clock);

234 PrintAndLog("Press pm3-button to about simulation");

235

236

237 /* clear our graph */

238 ClearGraph(0);

239

240 /* write 9 start bits */

                 for (i = 0; i < 9; i++)

                         AppendGraph(0, clock, 1);

243

244 /* for each hex char */

                 parity[0] = parity[1] = parity[2] = parity[3] = 0;

                 for (i = 0; i < 10; i++)

247 {

248 /* read each hex char */

                         sscanf(&Cmd[i], "%1x", &n);

                         for (j = 3; j >= 0; j--, n/= 2)

                                 binary[j] = n % 2;

252

253 /* append each bit */

                         AppendGraph(0, clock, binary[0]);

                         AppendGraph(0, clock, binary[1]);

                         AppendGraph(0, clock, binary[2]);

                         AppendGraph(0, clock, binary[3]);

258

259 /* append parity bit */

                         AppendGraph(0, clock, binary[0] ^ binary[1] ^ binary[2] ^ binary[3]);

261

262 /* keep track of column parity */

                         parity[0] ^= binary[0];

                         parity[1] ^= binary[1];

                         parity[2] ^= binary[2];

                         parity[3] ^= binary[3];

267 }

268

269 /* parity columns */

                 AppendGraph(0, clock, parity[0]);

                 AppendGraph(0, clock, parity[1]);

                 AppendGraph(0, clock, parity[2]);

                 AppendGraph(0, clock, parity[3]);

274

275 /* stop bit */

         AppendGraph(1, clock, 0);

277

         CmdLFSim("0"); //240 start_gap.

279 return 0;

280 }

281

282 /* Function is equivalent of lf read + data samples + em410xread

283 * looped until an EM410x tag is detected

284 *

285 * Why is CmdSamples("16000")?

286 * TBD: Auto-grow sample size based on detected sample rate. IE: If the

287 * rate gets lower, then grow the number of samples

288 * Changed by martin, 4000 x 4 = 16000,

289 * see http://www.proxmark.org/forum/viewtopic.php?pid=7235#p7235

290 *

291 * EDIT -- capture enough to get 2 complete preambles at the slowest data rate known to be used (rf/64) (64*64*2+9 = 8201) marshmellow

292 */

 int CmdEM410xWatch(const char *Cmd)

294 {

295 do {

296 if (ukbhit()) {

                         printf("\naborted via keyboard!\n");

298 break;

299 }

300

301 CmdLFRead("s");

                 getSamples("8201",true); 

         } while (!CmdAskEM410xDemod(""));

304

305 return 0;

306 }

307

308 //currently only supports manchester modulations

 int CmdEM410xWatchnSpoof(const char *Cmd)

310 {

311 CmdEM410xWatch(Cmd);

         PrintAndLog("# Replaying captured ID: %010"PRIx64, g_em410xId);

313 CmdLFaskSim("");

314 return 0;

315 }

316

 int CmdEM410xWrite(const char *Cmd)

318 {

         uint64_t id = 0xFFFFFFFFFFFFFFFF; // invalid id value

         int card = 0xFF; // invalid card value

         unsigned int clock = 0; // invalid clock value

322

         sscanf(Cmd, "%" SCNx64 " %d %d", &id, &card, &clock);

324

325 // Check ID

         if (id == 0xFFFFFFFFFFFFFFFF) {

                 PrintAndLog("Error! ID is required.\n");

328 return 0;

329 }

         if (id >= 0x10000000000) {

                 PrintAndLog("Error! Given EM410x ID is longer than 40 bits.\n");

332 return 0;

333 }

334

335 // Check Card

         if (card == 0xFF) {

                 PrintAndLog("Error! Card type required.\n");

338 return 0;

339 }

         if (card < 0) {

                 PrintAndLog("Error! Bad card type selected.\n");

342 return 0;

343 }

344

345 // Check Clock

346 // Default: 64

         if (clock == 0)

348 clock = 64;

349

350 // Allowed clock rates: 16, 32, 40 and 64

         if ((clock != 16) && (clock != 32) && (clock != 64) && (clock != 40)) {

                 PrintAndLog("Error! Clock rate %d not valid. Supported clock rates are 16, 32, 40 and 64.\n", clock);

353 return 0;

354 }

355

         if (card == 1) {

                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64 " (clock rate: %d)", "T55x7", id, clock);

358 // NOTE: We really should pass the clock in as a separate argument, but to

359 // provide for backwards-compatibility for older firmware, and to avoid

360 // having to add another argument to CMD_EM410X_WRITE_TAG, we just store

361 // the clock rate in bits 8-15 of the card value

                 card = (card & 0xFF) | ((clock << 8) & 0xFF00);

         }       else if (card == 0) {

                 PrintAndLog("Writing %s tag with UID 0x%010" PRIx64, "T5555", id, clock);

                 card = (card & 0xFF) | ((clock << 8) & 0xFF00);

366 } else {

                 PrintAndLog("Error! Bad card type selected.\n");

368 return 0;

369 }

370

         UsbCommand c = {CMD_EM410X_WRITE_TAG, {card, (uint32_t)(id >> 32), (uint32_t)id}};

372 SendCommand(&c);

373

374 return 0;

375 }

376

377 //**************** Start of EM4x50 Code ************************

 bool EM_EndParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)

379 {

         if (rows*cols>size) return false;

381 uint8_t colP=0;

382 //assume last col is a parity and do not test

         for (uint8_t colNum = 0; colNum < cols-1; colNum++) {

                 for (uint8_t rowNum = 0; rowNum < rows; rowNum++) {

                         colP ^= BitStream[(rowNum*cols)+colNum];

386 }

                 if (colP != pType) return false;

388 }

389 return true;

390 }

391

 bool EM_ByteParityTest(uint8_t *BitStream, size_t size, uint8_t rows, uint8_t cols, uint8_t pType)

393 {

         if (rows*cols>size) return false;

395 uint8_t rowP=0;

396 //assume last row is a parity row and do not test

         for (uint8_t rowNum = 0; rowNum < rows-1; rowNum++) {

                 for (uint8_t colNum = 0; colNum < cols; colNum++) {

                         rowP ^= BitStream[(rowNum*cols)+colNum];

400 }

                 if (rowP != pType) return false;

402 }

403 return true;

404 }

405

 uint32_t OutputEM4x50_Block(uint8_t *BitStream, size_t size, bool verbose, bool pTest)

407 {

         if (size<45) return 0;

         uint32_t code = bytebits_to_byte(BitStream,8);

         code = code<<8 | bytebits_to_byte(BitStream+9,8);

         code = code<<8 | bytebits_to_byte(BitStream+18,8);

         code = code<<8 | bytebits_to_byte(BitStream+27,8);

413 if (verbose || g_debugMode){

                 for (uint8_t i = 0; i<5; i++){

                         if (i == 4) PrintAndLog(""); //parity byte spacer

416 PrintAndLog("%d%d%d%d%d%d%d%d %d -> 0x%02x",

417 BitStream[i*9],

                             BitStream[i*9+1],

                             BitStream[i*9+2],

                             BitStream[i*9+3],

                             BitStream[i*9+4],

                             BitStream[i*9+5],

                             BitStream[i*9+6],

                             BitStream[i*9+7],

                             BitStream[i*9+8],

                             bytebits_to_byte(BitStream+i*9,8)

427 );

428 }

429 if (pTest)

430 PrintAndLog("Parity Passed");

431 else

432 PrintAndLog("Parity Failed");

433 }

434 return code;

435 }

436 /* Read the transmitted data of an EM4x50 tag from the graphbuffer

437 * Format:

438 *

439 * XXXXXXXX [row parity bit (even)] <- 8 bits plus parity

440 * XXXXXXXX [row parity bit (even)] <- 8 bits plus parity

441 * XXXXXXXX [row parity bit (even)] <- 8 bits plus parity

442 * XXXXXXXX [row parity bit (even)] <- 8 bits plus parity

443 * CCCCCCCC <- column parity bits

444 * 0 <- stop bit

445 * LW <- Listen Window

446 *

447 * This pattern repeats for every block of data being transmitted.

448 * Transmission starts with two Listen Windows (LW - a modulated

449 * pattern of 320 cycles each (32/32/128/64/64)).

450 *

451 * Note that this data may or may not be the UID. It is whatever data

452 * is stored in the blocks defined in the control word First and Last

453 * Word Read values. UID is stored in block 32.

454 */

455 //completed by Marshmellow

 int EM4x50Read(const char *Cmd, bool verbose)

457 {

         uint8_t fndClk[] = {8,16,32,40,50,64,128};

459 int clk = 0;

460 int invert = 0;

461 int tol = 0;

         int i, j, startblock, skip, block, start, end, low, high, minClk;

463 bool complete = false;

         int tmpbuff[MAX_GRAPH_TRACE_LEN / 64];

465 uint32_t Code[6];

466 char tmp[6];

467 char tmp2[20];

468 int phaseoff;

469 high = low = 0;

         memset(tmpbuff, 0, MAX_GRAPH_TRACE_LEN / 64);

471

472 // get user entry if any

         sscanf(Cmd, "%i %i", &clk, &invert);

474

475 // save GraphBuffer - to restore it later

476 save_restoreGB(1);

477

478 // first get high and low values

         for (i = 0; i < GraphTraceLen; i++) {

                 if (GraphBuffer[i] > high)

481 high = GraphBuffer[i];

                 else if (GraphBuffer[i] < low)

483 low = GraphBuffer[i];

484 }

485

486 i = 0;

487 j = 0;

488 minClk = 255;

489 // get to first full low to prime loop and skip incomplete first pulse

         while ((GraphBuffer[i] < high) && (i < GraphTraceLen))

491 ++i;

         while ((GraphBuffer[i] > low) && (i < GraphTraceLen))

493 ++i;

494 skip = i;

495

496 // populate tmpbuff buffer with pulse lengths

497 while (i < GraphTraceLen) {

498 // measure from low to low

                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))

500 ++i;

501 start= i;

                 while ((GraphBuffer[i] < high) && (i < GraphTraceLen))

503 ++i;

                 while ((GraphBuffer[i] > low) && (i < GraphTraceLen))

505 ++i;

                 if (j>=(MAX_GRAPH_TRACE_LEN/64)) {

507 break;

508 }

509 tmpbuff[j++]= i - start;

                 if (i-start < minClk && i < GraphTraceLen) {

511 minClk = i - start;

512 }

513 }

514 // set clock

515 if (!clk) {

                 for (uint8_t clkCnt = 0; clkCnt<7; clkCnt++) {

                         tol = fndClk[clkCnt]/8;

                         if (minClk >= fndClk[clkCnt]-tol && minClk <= fndClk[clkCnt]+1) { 

519 clk=fndClk[clkCnt];

520 break;

521 }

522 }

                 if (!clk) return 0;

         } else tol = clk/8;

525

526 // look for data start - should be 2 pairs of LW (pulses of clk*3,clk*2)

527 start = -1;

         for (i= 0; i < j - 4 ; ++i) {

529 skip += tmpbuff[i];

                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks

                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks

                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks

                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following

534 {

535 start= i + 4;

536 break;

537 }

538 }

539 startblock = i + 4;

540

541 // skip over the remainder of LW

         skip += tmpbuff[i+1] + tmpbuff[i+2] + clk;

         if (tmpbuff[i+3]>clk) 

                 phaseoff = tmpbuff[i+3]-clk;

545 else

546 phaseoff = 0;

547 // now do it again to find the end

548 end = skip;

         for (i += 3; i < j - 4 ; ++i) {

550 end += tmpbuff[i];

                 if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)  //3 clocks

                         if (tmpbuff[i+1] >= clk*2-tol && tmpbuff[i+1] <= clk*2+tol)  //2 clocks

                                 if (tmpbuff[i+2] >= clk*3-tol && tmpbuff[i+2] <= clk*3+tol) //3 clocks

                                         if (tmpbuff[i+3] >= clk-tol)  //1.5 to 2 clocks - depends on bit following

555 {

556 complete= true;

557 break;

558 }

559 }

560 end = i;

561 // report back

562 if (verbose || g_debugMode) {

                 if (start >= 0) {

                         PrintAndLog("\nNote: one block = 50 bits (32 data, 12 parity, 6 marker)");

565 } else {

                         PrintAndLog("No data found!, clock tried:%d",clk);

567 PrintAndLog("Try again with more samples.");

568 PrintAndLog(" or after a 'data askedge' command to clean up the read");

569 return 0;

570 }

         } else if (start < 0) return 0;

572 start = skip;

         snprintf(tmp2, sizeof(tmp2),"%d %d 1000 %d", clk, invert, clk*47);

574 // get rid of leading crap

         snprintf(tmp, sizeof(tmp), "%i", skip);

576 CmdLtrim(tmp);

577 bool pTest;

578 bool AllPTest = true;

579 // now work through remaining buffer printing out data blocks

580 block = 0;

581 i = startblock;

         while (block < 6) {

                 if (verbose || g_debugMode) PrintAndLog("\nBlock %i:", block);

584 skip = phaseoff;

585

586 // look for LW before start of next block

                 for ( ; i < j - 4 ; ++i) {

588 skip += tmpbuff[i];

                         if (tmpbuff[i] >= clk*3-tol && tmpbuff[i] <= clk*3+tol)

                                 if (tmpbuff[i+1] >= clk-tol)

591 break;

592 }

                 if (i >= j-4) break; //next LW not found

594 skip += clk;

                 if (tmpbuff[i+1]>clk)

                         phaseoff = tmpbuff[i+1]-clk;

597 else

598 phaseoff = 0;

599 i += 2;

                 if (ASKDemod(tmp2, false, false, 1) < 1) {

601 save_restoreGB(0);

602 return 0;

603 }

604 //set DemodBufferLen to just one block

605 DemodBufferLen = skip/clk;

606 //test parities

                 pTest = EM_ByteParityTest(DemodBuffer,DemodBufferLen,5,9,0);    

                 pTest &= EM_EndParityTest(DemodBuffer,DemodBufferLen,5,9,0);

609 AllPTest &= pTest;

610 //get output

                 Code[block] = OutputEM4x50_Block(DemodBuffer,DemodBufferLen,verbose, pTest);

                 if (g_debugMode) PrintAndLog("\nskipping %d samples, bits:%d", skip, skip/clk);

613 //skip to start of next block

                 snprintf(tmp,sizeof(tmp),"%i",skip);

615 CmdLtrim(tmp);

616 block++;

                 if (i >= end) break; //in case chip doesn't output 6 blocks

618 }

619 //print full code:

         if (verbose || g_debugMode || AllPTest){

621 if (!complete) {

622 PrintAndLog("*** Warning!");

623 PrintAndLog("Partial data - no end found!");

624 PrintAndLog("Try again with more samples.");

625 }

                 PrintAndLog("Found data at sample: %i - using clock: %i", start, clk);    

627 end = block;

                 for (block=0; block < end; block++){

                         PrintAndLog("Block %d: %08x",block,Code[block]);

630 }

631 if (AllPTest) {

632 PrintAndLog("Parities Passed");

633 } else {

634 PrintAndLog("Parities Failed");

635 PrintAndLog("Try cleaning the read samples with 'data askedge'");

636 }

637 }

638

639 //restore GraphBuffer

640 save_restoreGB(0);

         return (int)AllPTest;

642 }

643

 int CmdEM4x50Read(const char *Cmd)

645 {

         return EM4x50Read(Cmd, true);

647 }

648

649 //**************** Start of EM4x05/EM4x69 Code ************************

 int usage_lf_em_read(void) {

651 PrintAndLog("Read EM4x05/EM4x69. Tag must be on antenna. ");

652 PrintAndLog("");

653 PrintAndLog("Usage: lf em 4x05readword [h] <address> <pwd>");

654 PrintAndLog("Options:");

655 PrintAndLog(" h - this help");

656 PrintAndLog(" address - memory address to read. (0-15)");

657 PrintAndLog(" pwd - password (hex) (optional)");

658 PrintAndLog("samples:");

659 PrintAndLog(" lf em 4x05readword 1");

660 PrintAndLog(" lf em 4x05readword 1 11223344");

661 return 0;

662 }

663

664 // for command responses from em4x05 or em4x69

665 // download samples from device and copy them to the Graphbuffer

666 bool downloadSamplesEM() {

667 // 8 bit preamble + 32 bit word response (max clock (128) * 40bits = 5120 samples)

668 uint8_t got[6000];

         GetFromBigBuf(got, sizeof(got), 0);

         if ( !WaitForResponseTimeout(CMD_ACK, NULL, 4000) ) {

671 PrintAndLog("command execution time out");

672 return false;

673 }

         setGraphBuf(got, sizeof(got));

675 return true;

676 }

677

 bool EM4x05testDemodReadData(uint32_t *word, bool readCmd) {

679 // em4x05/em4x69 command response preamble is 00001010

680 // skip first two 0 bits as they might have been missed in the demod

         uint8_t preamble[] = {0,0,1,0,1,0};

682 size_t startIdx = 0;

683

684 // set size to 20 to only test first 14 positions for the preamble or less if not a read command

         size_t size = (readCmd) ? 20 : 11;

686 // sanity check

         size = (size > DemodBufferLen) ? DemodBufferLen : size;

688 // test preamble

         if ( !preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx, true) ) {

                 if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305 preamble not found :: %d", startIdx);

691 return false;

692 }

693 // if this is a readword command, get the read bytes and test the parities

694 if (readCmd) {

                 if (!EM_EndParityTest(DemodBuffer + startIdx + sizeof(preamble), 45, 5, 9, 0)) {

                         if (g_debugMode) PrintAndLog("DEBUG: Error - End Parity check failed");

697 return false;

698 }

699 // test for even parity bits and remove them. (leave out the end row of parities so 36 bits)

                 if ( removeParity(DemodBuffer, startIdx + sizeof(preamble),9,0,36) == 0 ) {             

                         if (g_debugMode) PrintAndLog("DEBUG: Error - Parity not detected");

702 return false;

703 }

704

                 setDemodBuf(DemodBuffer, 32, 0);

                 *word = bytebits_to_byteLSBF(DemodBuffer, 32);

707 }

708 return true;

709 }

710

711 // FSK, PSK, ASK/MANCHESTER, ASK/BIPHASE, ASK/DIPHASE

712 // should cover 90% of known used configs

713 // the rest will need to be manually demoded for now...

 int demodEM4x05resp(uint32_t *word, bool readCmd) {

715 int ans = 0;

716

717 // test for FSK wave (easiest to 99% ID)

         if (GetFskClock("", false, false)) {

719 //valid fsk clocks found

                 ans = FSKrawDemod("0 0", false);

721 if (!ans) {

                         if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: FSK Demod failed, ans: %d", ans);

723 } else {

                         if (EM4x05testDemodReadData(word, readCmd)) {

725 return 1;

726 }

727 }

728 }

729 // PSK clocks should be easy to detect ( but difficult to demod a non-repeating pattern... )

         ans = GetPskClock("", false, false);

         if (ans>0) {

732 //try psk1

                 ans = PSKDemod("0 0 6", false);

734 if (!ans) {

                         if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: PSK1 Demod failed, ans: %d", ans);

736 } else {

                         if (EM4x05testDemodReadData(word, readCmd)) {

738 return 1;

739 } else {

740 //try psk2

741 psk1TOpsk2(DemodBuffer, DemodBufferLen);

                                 if (EM4x05testDemodReadData(word, readCmd)) {

743 return 1;

744 }

745 }

746 //try psk1 inverted

                         ans = PSKDemod("0 1 6", false);

748 if (!ans) {

                                 if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: PSK1 Demod failed, ans: %d", ans);

750 } else {

                                 if (EM4x05testDemodReadData(word, readCmd)) {

752 return 1;

753 } else {

754 //try psk2

755 psk1TOpsk2(DemodBuffer, DemodBufferLen);

                                         if (EM4x05testDemodReadData(word, readCmd)) {

757 return 1;

758 }

759 }

760 }

761 }

762 }

763

764 // manchester is more common than biphase... try first

765 bool stcheck = false;

766 // try manchester - NOTE: ST only applies to T55x7 tags.

         ans = ASKDemod_ext("0,0,1", false, false, 1, &stcheck);

768 if (!ans) {

                 if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/Manchester Demod failed, ans: %d", ans);

770 } else {

                 if (EM4x05testDemodReadData(word, readCmd)) {

772 return 1;

773 }

774 }

775

776 //try biphase

         ans = ASKbiphaseDemod("0 0 1", false);

778 if (!ans) {

                 if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans);

780 } else {

                 if (EM4x05testDemodReadData(word, readCmd)) {

782 return 1;

783 }

784 }

785

786 //try diphase (differential biphase or inverted)

         ans = ASKbiphaseDemod("0 1 1", false);

788 if (!ans) {

                 if (g_debugMode) PrintAndLog("DEBUG: Error - EM4305: ASK/biphase Demod failed, ans: %d", ans);

790 } else {

                 if (EM4x05testDemodReadData(word, readCmd)) {

792 return 1;

793 }

794 }

795

796 return -1;

797 }

798

 int EM4x05ReadWord_ext(uint8_t addr, uint32_t pwd, bool usePwd, uint32_t *wordData) {

         UsbCommand c = {CMD_EM4X_READ_WORD, {addr, pwd, usePwd}};

801 clearCommandBuffer();

802 SendCommand(&c);

803 UsbCommand resp;

         if (!WaitForResponseTimeout(CMD_ACK, &resp, 2500)){

805 PrintAndLog("Command timed out");

806 return -1;

807 }

808 if ( !downloadSamplesEM() ) {

809 return -1;

810 }

         int testLen = (GraphTraceLen < 1000) ? GraphTraceLen : 1000;

         if (graphJustNoise(GraphBuffer, testLen)) {

813 PrintAndLog("no tag not found");

814 return -1;

815 }

816 //attempt demod:

         return demodEM4x05resp(wordData, true);

818 }

819

 int EM4x05ReadWord(uint8_t addr, uint32_t pwd, bool usePwd) {

821 uint32_t wordData = 0;

         int success = EM4x05ReadWord_ext(addr, pwd, usePwd, &wordData);

         if (success == 1)

                 PrintAndLog("%s Address %02d | %08X", (addr>13) ? "Lock":" Got",addr,wordData);

825 else

                 PrintAndLog("Read Address %02d | failed",addr);

827

828 return success;

829 }

830

 int CmdEM4x05ReadWord(const char *Cmd) {

832 uint8_t addr;

833 uint32_t pwd;

834 bool usePwd = false;

         uint8_t ctmp = param_getchar(Cmd, 0);

         if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_read();

837

         addr = param_get8ex(Cmd, 0, 50, 10);

839 // for now use default input of 1 as invalid (unlikely 1 will be a valid password...)

         pwd =  param_get32ex(Cmd, 1, 1, 16);

841

         if ( (addr > 15) ) {

843 PrintAndLog("Address must be between 0 and 15");

844 return 1;

845 }

         if ( pwd == 1 ) {

                 PrintAndLog("Reading address %02u", addr);

848 } else {

849 usePwd = true;

                 PrintAndLog("Reading address %02u | password %08X", addr, pwd);

851 }

852

         return EM4x05ReadWord(addr, pwd, usePwd);

854 }

855

 int usage_lf_em_dump(void) {

857 PrintAndLog("Dump EM4x05/EM4x69. Tag must be on antenna. ");

858 PrintAndLog("");

859 PrintAndLog("Usage: lf em 4x05dump [h] <pwd>");

860 PrintAndLog("Options:");

861 PrintAndLog(" h - this help");

862 PrintAndLog(" pwd - password (hex) (optional)");

863 PrintAndLog("samples:");

864 PrintAndLog(" lf em 4x05dump");

865 PrintAndLog(" lf em 4x05dump 11223344");

866 return 0;

867 }

868

 int CmdEM4x05dump(const char *Cmd) {

870 uint8_t addr = 0;

871 uint32_t pwd;

872 bool usePwd = false;

         uint8_t ctmp = param_getchar(Cmd, 0);

         if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_dump();

875

876 // for now use default input of 1 as invalid (unlikely 1 will be a valid password...)

         pwd = param_get32ex(Cmd, 0, 1, 16);

878

         if ( pwd != 1 ) {

880 usePwd = true;

881 }

882 int success = 1;

         for (; addr < 16; addr++) {

                 if (addr == 2) {

885 if (usePwd) {

                                 PrintAndLog(" PWD Address %02u | %08X",addr,pwd);

887 } else {

888 PrintAndLog(" PWD Address 02 | cannot read");

889 }

890 } else {

                         success &= EM4x05ReadWord(addr, pwd, usePwd);

892 }

893 }

894

895 return success;

896 }

897

898

 int usage_lf_em_write(void) {

900 PrintAndLog("Write EM4x05/EM4x69. Tag must be on antenna. ");

901 PrintAndLog("");

902 PrintAndLog("Usage: lf em 4x05writeword [h] [s] <address> <data> <pwd>");

903 PrintAndLog("Options:");

904 PrintAndLog(" h - this help");

905 PrintAndLog(" s - swap data bit order before write");

906 PrintAndLog(" address - memory address to write to. (0-15)");

907 PrintAndLog(" data - data to write (hex)");

908 PrintAndLog(" pwd - password (hex) (optional)");

909 PrintAndLog("samples:");

910 PrintAndLog(" lf em 4x05writeword 1");

911 PrintAndLog(" lf em 4x05writeword 1 deadc0de 11223344");

912 return 0;

913 }

914

 int CmdEM4x05WriteWord(const char *Cmd) {

         uint8_t ctmp = param_getchar(Cmd, 0);

         if ( strlen(Cmd) == 0 || ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_write();

918

919 bool usePwd = false;

920

         uint8_t addr = 16; // default to invalid address

         uint32_t data = 0xFFFFFFFF; // default to blank data

         uint32_t pwd = 0xFFFFFFFF; // default to blank password

924 char swap = 0;

925

926 int p = 0;

         swap = param_getchar(Cmd, 0);

         if (swap == 's' || swap=='S') p++;

         addr = param_get8ex(Cmd, p++, 16, 10);

         data = param_get32ex(Cmd, p++, 0, 16);

         pwd  = param_get32ex(Cmd, p++, 1, 16);

932

         if (swap == 's' || swap=='S') data = SwapBits(data, 32);

934

         if ( (addr > 15) ) {

936 PrintAndLog("Address must be between 0 and 15");

937 return 1;

938 }

         if ( pwd == 1 )

                 PrintAndLog("Writing address %d data %08X", addr, data);        

941 else {

942 usePwd = true;

                 PrintAndLog("Writing address %d data %08X using password %08X", addr, data, pwd);

944 }

945

         uint16_t flag = (addr << 8 ) | usePwd;

947

         UsbCommand c = {CMD_EM4X_WRITE_WORD, {flag, data, pwd}};

949 clearCommandBuffer();

950 SendCommand(&c);

951 UsbCommand resp;

         if (!WaitForResponseTimeout(CMD_ACK, &resp, 2000)){

953 PrintAndLog("Error occurred, device did not respond during write operation.");

954 return -1;

955 }

956 if ( !downloadSamplesEM() ) {

957 return -1;

958 }

959 //check response for 00001010 for write confirmation!

960 //attempt demod:

961 uint32_t dummy = 0;

         int result = demodEM4x05resp(&dummy,false);

         if (result == 1) {

964 PrintAndLog("Write Verified");

965 } else {

966 PrintAndLog("Write could not be verified");

967 }

968 return result;

969 }

970

 void printEM4x05config(uint32_t wordData) {

         uint16_t datarate = (((wordData & 0x3F)+1)*2);

         uint8_t encoder = ((wordData >> 6) & 0xF);

974 char enc[14];

         memset(enc,0,sizeof(enc));

976

         uint8_t PSKcf = (wordData >> 10) & 0x3;

978 char cf[10];

         memset(cf,0,sizeof(cf));

         uint8_t delay = (wordData >> 12) & 0x3;

981 char cdelay[33];

         memset(cdelay,0,sizeof(cdelay));

         uint8_t LWR = (wordData >> 14) & 0xF; //last word read

984

985 switch (encoder) {

                 case 0: snprintf(enc,sizeof(enc),"NRZ"); break;

                 case 1: snprintf(enc,sizeof(enc),"Manchester"); break;

                 case 2: snprintf(enc,sizeof(enc),"Biphase"); break;

                 case 3: snprintf(enc,sizeof(enc),"Miller"); break;

                 case 4: snprintf(enc,sizeof(enc),"PSK1"); break;

                 case 5: snprintf(enc,sizeof(enc),"PSK2"); break;

                 case 6: snprintf(enc,sizeof(enc),"PSK3"); break;

                 case 7: snprintf(enc,sizeof(enc),"Unknown"); break;

                 case 8: snprintf(enc,sizeof(enc),"FSK1"); break;

                 case 9: snprintf(enc,sizeof(enc),"FSK2"); break;

                 default: snprintf(enc,sizeof(enc),"Unknown"); break;

997 }

998

999 switch (PSKcf) {

                 case 0: snprintf(cf,sizeof(cf),"RF/2"); break;

                 case 1: snprintf(cf,sizeof(cf),"RF/8"); break;

                 case 2: snprintf(cf,sizeof(cf),"RF/4"); break;

                 case 3: snprintf(cf,sizeof(cf),"unknown"); break;

1004 }

1005

1006 switch (delay) {

                 case 0: snprintf(cdelay, sizeof(cdelay),"no delay"); break;

                 case 1: snprintf(cdelay, sizeof(cdelay),"BP/8 or 1/8th bit period delay"); break;

                 case 2: snprintf(cdelay, sizeof(cdelay),"BP/4 or 1/4th bit period delay"); break;

                 case 3: snprintf(cdelay, sizeof(cdelay),"no delay"); break;

1011 }

         PrintAndLog("ConfigWord: %08X (Word 4)\n", wordData);

         PrintAndLog("Config Breakdown:", wordData);

         PrintAndLog(" Data Rate:  %02u | RF/%u", wordData & 0x3F, datarate);

         PrintAndLog("   Encoder:   %u | %s", encoder, enc);

         PrintAndLog("    PSK CF:   %u | %s", PSKcf, cf);

         PrintAndLog("     Delay:   %u | %s", delay, cdelay);

         PrintAndLog(" LastWordR:  %02u | Address of last word for default read", LWR);

         PrintAndLog(" ReadLogin:   %u | Read Login is %s", (wordData & 0x40000)>>18, (wordData & 0x40000) ? "Required" : "Not Required");       

         PrintAndLog("   ReadHKL:   %u | Read Housekeeping Words Login is %s", (wordData & 0x80000)>>19, (wordData & 0x80000) ? "Required" : "Not Required");    

         PrintAndLog("WriteLogin:   %u | Write Login is %s", (wordData & 0x100000)>>20, (wordData & 0x100000) ? "Required" : "Not Required");    

         PrintAndLog("  WriteHKL:   %u | Write Housekeeping Words Login is %s", (wordData & 0x200000)>>21, (wordData & 0x200000) ? "Required" : "Not Required"); 

         PrintAndLog("    R.A.W.:   %u | Read After Write is %s", (wordData & 0x400000)>>22, (wordData & 0x400000) ? "On" : "Off");

         PrintAndLog("   Disable:   %u | Disable Command is %s", (wordData & 0x800000)>>23, (wordData & 0x800000) ? "Accepted" : "Not Accepted");

         PrintAndLog("    R.T.F.:   %u | Reader Talk First is %s", (wordData & 0x1000000)>>24, (wordData & 0x1000000) ? "Enabled" : "Disabled");

         PrintAndLog("    Pigeon:   %u | Pigeon Mode is %s\n", (wordData & 0x4000000)>>26, (wordData & 0x4000000) ? "Enabled" : "Disabled");

1027 }

1028

 void printEM4x05info(uint8_t chipType, uint8_t cap, uint16_t custCode, uint32_t serial) {

1030 switch (chipType) {

                 case 9: PrintAndLog("\n Chip Type:   %u | EM4305", chipType); break;

                 case 4: PrintAndLog(" Chip Type:   %u | Unknown", chipType); break;

                 case 2: PrintAndLog(" Chip Type:   %u | EM4469", chipType); break;

1034 //add more here when known

                 default: PrintAndLog(" Chip Type:   %u Unknown", chipType); break;

1036 }

1037

1038 switch (cap) {

                 case 3: PrintAndLog("  Cap Type:   %u | 330pF",cap); break;

                 case 2: PrintAndLog("  Cap Type:   %u | %spF",cap, (chipType==2)? "75":"210"); break;

                 case 1: PrintAndLog("  Cap Type:   %u | 250pF",cap); break;

                 case 0: PrintAndLog("  Cap Type:   %u | no resonant capacitor",cap); break;

                 default: PrintAndLog("  Cap Type:   %u | unknown",cap); break;

1044 }

1045

         PrintAndLog(" Cust Code: %03u | %s", custCode, (custCode == 0x200) ? "Default": "Unknown");

         if (serial != 0) {

                 PrintAndLog("\n  Serial #: %08X\n", serial);

1049 }

1050 }

1051

 void printEM4x05ProtectionBits(uint32_t wordData) {

         for (uint8_t i = 0; i < 15; i++) {

                 PrintAndLog("      Word:  %02u | %s", i, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");

                 if (i==14) {

                         PrintAndLog("      Word:  %02u | %s", i+1, (((1 << i) & wordData ) || i < 2) ? "Is Write Locked" : "Is Not Write Locked");

1057 }

1058 }

1059 }

1060

1061 //quick test for EM4x05/EM4x69 tag

 bool EM4x05Block0Test(uint32_t *wordData) {

         if (EM4x05ReadWord_ext(0,0,false,wordData) == 1) {

1064 return true;

1065 }

1066 return false;

1067 }

1068

 int CmdEM4x05info(const char *Cmd) {

1070 //uint8_t addr = 0;

1071 uint32_t pwd;

1072 uint32_t wordData = 0;

1073 bool usePwd = false;

         uint8_t ctmp = param_getchar(Cmd, 0);

         if ( ctmp == 'H' || ctmp == 'h' ) return usage_lf_em_dump();

1076

1077 // for now use default input of 1 as invalid (unlikely 1 will be a valid password...)

         pwd = param_get32ex(Cmd, 0, 1, 16);

1079

         if ( pwd != 1 ) {

1081 usePwd = true;

1082 }

1083

1084 // read word 0 (chip info)

1085 // block 0 can be read even without a password.

         if ( !EM4x05Block0Test(&wordData) ) 

1087 return -1;

1088

         uint8_t chipType = (wordData >> 1) & 0xF;

         uint8_t cap = (wordData >> 5) & 3;

         uint16_t custCode = (wordData >> 9) & 0x3FF;

1092

1093 // read word 1 (serial #) doesn't need pwd

1094 wordData = 0;

         if (EM4x05ReadWord_ext(1, 0, false, &wordData) != 1) {

1096 //failed, but continue anyway...

1097 }

         printEM4x05info(chipType, cap, custCode, wordData);

1099

1100 // read word 4 (config block)

1101 // needs password if one is set

1102 wordData = 0;

         if ( EM4x05ReadWord_ext(4, pwd, usePwd, &wordData) != 1 ) {

1104 //failed

1105 return 0;

1106 }

1107 printEM4x05config(wordData);

1108

1109 // read word 14 and 15 to see which is being used for the protection bits

1110 wordData = 0;

         if ( EM4x05ReadWord_ext(14, pwd, usePwd, &wordData) != 1 ) {

1112 //failed

1113 return 0;

1114 }

1115 // if status bit says this is not the used protection word

         if (!(wordData & 0x8000)) {

                 if ( EM4x05ReadWord_ext(15, pwd, usePwd, &wordData) != 1 ) {

1118 //failed

1119 return 0;

1120 }

1121 }

         if (!(wordData & 0x8000)) {

1123 //something went wrong

1124 return 0;

1125 }

1126 printEM4x05ProtectionBits(wordData);

1127

1128 return 1;

1129 }

1130

1131

1132 static command_t CommandTable[] =

1133 {

         {"help",      CmdHelp, 1, "This help"},

         {"410xread",  CmdEMdemodASK, 0, "[findone] -- Extract ID from EM410x tag (option 0 for continuous loop, 1 for only 1 tag)"},  

         {"410xdemod", CmdAskEM410xDemod,  1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},

         {"410xsim",   CmdEM410xSim, 0, "<UID> [clock rate] -- Simulate EM410x tag"},

         {"410xwatch", CmdEM410xWatch, 0, "['h'] -- Watches for EM410x 125/134 kHz tags (option 'h' for 134)"},

         {"410xspoof", CmdEM410xWatchnSpoof, 0, "['h'] --- Watches for EM410x 125/134 kHz tags, and replays them. (option 'h' for 134)" },

         {"410xwrite", CmdEM410xWrite, 0, "<UID> <'0' T5555> <'1' T55x7> [clock rate] -- Write EM410x UID to T5555(Q5) or T55x7 tag, optionally setting clock rate"},

         {"4x05dump",  CmdEM4x05dump, 0, "(pwd) -- Read EM4x05/EM4x69 all word data"},

         {"4x05info",  CmdEM4x05info, 0, "(pwd) -- Get info from EM4x05/EM4x69 tag"},

         {"4x05readword",  CmdEM4x05ReadWord, 0, "<Word> (pwd) -- Read EM4x05/EM4x69 word data"},

         {"4x05writeword", CmdEM4x05WriteWord, 0, "<Word> <data> (pwd) -- Write EM4x05/EM4x69 word data"},

         {"4x50read",  CmdEM4x50Read, 1, "demod data from EM4x50 tag from the graph buffer"},

         {NULL, NULL, 0, NULL}

1147 };

1148

 int CmdLFEM4X(const char *Cmd)

1150 {

1151 CmdsParse(CommandTable, Cmd);

1152 return 0;

1153 }

1154

 int CmdHelp(const char *Cmd)

1156 {

1157 CmdsHelp(CommandTable);

1158 return 0;

1159 }