git.zerfleddert.de Git - proxmark3-svn/blob - client/cmdlf.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 commands
   9 //-----------------------------------------------------------------------------
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <string.h>
  14 #include <limits.h>
  15 #include "proxmark3.h"
  16 #include "data.h"
  17 #include "graph.h"
  18 #include "ui.h"
  19 #include "cmdparser.h"
  20 #include "cmdmain.h"
  21 #include "cmddata.h"
  22 #include "util.h"
  23 #include "cmdlf.h"
  24 #include "cmdlfhid.h"
  25 #include "cmdlfawid.h"
  26 #include "cmdlfti.h"
  27 #include "cmdlfem4x.h"
  28 #include "cmdlfhitag.h"
  29 #include "cmdlft55xx.h"
  30 #include "cmdlfpcf7931.h"
  31 #include "cmdlfio.h"
  32 #include "lfdemod.h"
  33 #include "cmdlfviking.h"
  34 static int CmdHelp(const char *Cmd);
  35
  36
  37 int usage_lf_cmdread()
  38 {
  39         PrintAndLog("Usage: lf cmdread d <delay period> z <zero period> o <one period> c <cmdbytes> [H]");
  40         PrintAndLog("Options:        ");
  41         PrintAndLog("       h             This help");
  42         PrintAndLog("       H             Freqency High (134 KHz), default is 'Low (125KHz)'");
  43         PrintAndLog("       d <delay>     delay OFF period, (dec)");
  44         PrintAndLog("       z <zero>      time period ZERO, (dec)");
  45         PrintAndLog("       o <one>       time period ONE, (dec)");
  46         PrintAndLog("       c <cmd>       Command bytes");
  47         PrintAndLog("       ************* All periods in microseconds (ms)");
  48         PrintAndLog("Examples:");
  49         PrintAndLog("      lf cmdread d 80 z 100 o 200 c 11000");
  50         PrintAndLog("      lf cmdread d 80 z 100 o 100 c 11000 H");
  51         return 0;
  52 }
  53
  54 /* send a LF command before reading */
  55 int CmdLFCommandRead(const char *Cmd)
  56 {
  57         static char dummy[3] = {0x20,0x00,0x00};
  58         UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
  59         bool errors = FALSE;
  60
  61         uint8_t cmdp = 0;
  62         int strLength = 0;
  63
  64         while(param_getchar(Cmd, cmdp) != 0x00) {
  65                 switch(param_getchar(Cmd, cmdp))
  66                 {
  67                 case 'h':
  68                         return usage_lf_cmdread();
  69                 case 'H':
  70                         dummy[1]='h';
  71                         cmdp++;
  72                         break;
  73                 case 'L':
  74                         cmdp++;
  75                         break;
  76                 case 'c':
  77                         strLength = param_getstr(Cmd, cmdp+1, (char *)&c.d.asBytes);
  78                         cmdp+=2;
  79                         break;
  80                 case 'd':
  81                         c.arg[0] = param_get32ex(Cmd, cmdp+1, 0, 10);
  82                         cmdp+=2;
  83                         break;
  84                 case 'z':
  85                         c.arg[1] = param_get32ex(Cmd, cmdp+1, 0, 10);
  86                         cmdp+=2;
  87                         break;
  88                 case 'o':
  89                         c.arg[2] = param_get32ex(Cmd, cmdp+1, 0, 10);
  90                         cmdp+=2;
  91                         break;
  92                 default:
  93                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
  94                         errors = 1;
  95                         break;
  96                 }
  97                 if(errors) break;
  98         }
  99         // No args
 100         if (cmdp == 0) errors = 1;
 101
 102         //Validations
 103         if (errors) return usage_lf_cmdread();
 104
 105         // in case they specified 'H'
 106         // added to the end..
 107         strcpy((char *)&c.d.asBytes + strLength, dummy);
 108
 109         clearCommandBuffer();
 110         SendCommand(&c);
 111         return 0;
 112 }
 113
 114 int CmdFlexdemod(const char *Cmd)
 115 {
 116   int i;
 117   for (i = 0; i < GraphTraceLen; ++i) {
 118     if (GraphBuffer[i] < 0) {
 119       GraphBuffer[i] = -1;
 120     } else {
 121       GraphBuffer[i] = 1;
 122     }
 123   }
 124
 125 #define LONG_WAIT 100
 126   int start;
 127   for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
 128     int first = GraphBuffer[start];
 129     for (i = start; i < start + LONG_WAIT; i++) {
 130       if (GraphBuffer[i] != first) {
 131         break;
 132       }
 133     }
 134     if (i == (start + LONG_WAIT)) {
 135       break;
 136     }
 137   }
 138   if (start == GraphTraceLen - LONG_WAIT) {
 139     PrintAndLog("nothing to wait for");
 140     return 0;
 141   }
 142
 143   GraphBuffer[start] = 2;
 144   GraphBuffer[start+1] = -2;
 145         uint8_t bits[64] = {0x00};
 146
 147         int bit, sum;
 148   i = start;
 149   for (bit = 0; bit < 64; bit++) {
 150                 sum = 0;
 151                 for (int j = 0; j < 16; j++) {
 152       sum += GraphBuffer[i++];
 153     }
 154
 155                 bits[bit] = (sum > 0) ? 1 : 0;
 156
 157     PrintAndLog("bit %d sum %d", bit, sum);
 158   }
 159
 160   for (bit = 0; bit < 64; bit++) {
 161     int j;
 162     int sum = 0;
 163     for (j = 0; j < 16; j++) {
 164       sum += GraphBuffer[i++];
 165     }
 166     if (sum > 0 && bits[bit] != 1) {
 167       PrintAndLog("oops1 at %d", bit);
 168     }
 169     if (sum < 0 && bits[bit] != 0) {
 170       PrintAndLog("oops2 at %d", bit);
 171     }
 172   }
 173
 174         // HACK writing back to graphbuffer.
 175   GraphTraceLen = 32*64;
 176   i = 0;
 177   int phase = 0;
 178   for (bit = 0; bit < 64; bit++) {
 179
 180                 phase = (bits[bit] == 0) ? 0 : 1;
 181
 182     int j;
 183     for (j = 0; j < 32; j++) {
 184       GraphBuffer[i++] = phase;
 185       phase = !phase;
 186     }
 187   }
 188
 189   RepaintGraphWindow();
 190   return 0;
 191 }
 192
 193 int CmdIndalaDemod(const char *Cmd)
 194 {
 195   // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
 196
 197   int state = -1;
 198   int count = 0;
 199   int i, j;
 200
 201   // worst case with GraphTraceLen=64000 is < 4096
 202   // under normal conditions it's < 2048
 203
 204   uint8_t rawbits[4096];
 205   int rawbit = 0;
 206   int worst = 0, worstPos = 0;
 207  // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
 208   for (i = 0; i < GraphTraceLen-1; i += 2) {
 209     count += 1;
 210     if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
 211       if (state == 0) {
 212         for (j = 0; j <  count - 8; j += 16) {
 213           rawbits[rawbit++] = 0;
 214         }
 215         if ((abs(count - j)) > worst) {
 216           worst = abs(count - j);
 217           worstPos = i;
 218         }
 219       }
 220       state = 1;
 221       count = 0;
 222     } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
 223       if (state == 1) {
 224         for (j = 0; j <  count - 8; j += 16) {
 225           rawbits[rawbit++] = 1;
 226         }
 227         if ((abs(count - j)) > worst) {
 228           worst = abs(count - j);
 229           worstPos = i;
 230         }
 231       }
 232       state = 0;
 233       count = 0;
 234     }
 235   }
 236
 237   if (rawbit>0){
 238     PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
 239     PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
 240         } else {
 241                 return 0;
 242         }
 243
 244   // Finding the start of a UID
 245   int uidlen, long_wait;
 246   if (strcmp(Cmd, "224") == 0) {
 247     uidlen = 224;
 248     long_wait = 30;
 249   } else {
 250     uidlen = 64;
 251     long_wait = 29;
 252   }
 253
 254   int start;
 255   int first = 0;
 256   for (start = 0; start <= rawbit - uidlen; start++) {
 257     first = rawbits[start];
 258     for (i = start; i < start + long_wait; i++) {
 259       if (rawbits[i] != first) {
 260         break;
 261       }
 262     }
 263     if (i == (start + long_wait)) {
 264       break;
 265     }
 266   }
 267
 268   if (start == rawbit - uidlen + 1) {
 269     PrintAndLog("nothing to wait for");
 270     return 0;
 271   }
 272
 273   // Inverting signal if needed
 274   if (first == 1) {
 275     for (i = start; i < rawbit; i++) {
 276       rawbits[i] = !rawbits[i];
 277     }
 278   }
 279
 280   // Dumping UID
 281         uint8_t bits[224] = {0x00};
 282         char showbits[225] = {0x00};
 283   int bit;
 284   i = start;
 285   int times = 0;
 286
 287   if (uidlen > rawbit) {
 288     PrintAndLog("Warning: not enough raw bits to get a full UID");
 289     for (bit = 0; bit < rawbit; bit++) {
 290       bits[bit] = rawbits[i++];
 291       // As we cannot know the parity, let's use "." and "/"
 292       showbits[bit] = '.' + bits[bit];
 293     }
 294     showbits[bit+1]='\0';
 295     PrintAndLog("Partial UID=%s", showbits);
 296     return 0;
 297   } else {
 298     for (bit = 0; bit < uidlen; bit++) {
 299       bits[bit] = rawbits[i++];
 300       showbits[bit] = '0' + bits[bit];
 301     }
 302     times = 1;
 303   }
 304
 305   //convert UID to HEX
 306   uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
 307   int idx;
 308         uid1 = uid2 = 0;
 309
 310   if (uidlen==64){
 311     for( idx=0; idx<64; idx++) {
 312         if (showbits[idx] == '0') {
 313         uid1=(uid1<<1)|(uid2>>31);
 314         uid2=(uid2<<1)|0;
 315         } else {
 316         uid1=(uid1<<1)|(uid2>>31);
 317         uid2=(uid2<<1)|1;
 318         }
 319       }
 320     PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
 321   }
 322   else {
 323                 uid3 = uid4 = uid5 = uid6 = uid7 = 0;
 324
 325     for( idx=0; idx<224; idx++) {
 326         uid1=(uid1<<1)|(uid2>>31);
 327         uid2=(uid2<<1)|(uid3>>31);
 328         uid3=(uid3<<1)|(uid4>>31);
 329         uid4=(uid4<<1)|(uid5>>31);
 330         uid5=(uid5<<1)|(uid6>>31);
 331         uid6=(uid6<<1)|(uid7>>31);
 332
 333                         if (showbits[idx] == '0')
 334                                 uid7 = (uid7<<1) | 0;
 335                         else
 336                                 uid7 = (uid7<<1) | 1;
 337       }
 338     PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
 339   }
 340
 341   // Checking UID against next occurrences
 342     int failed = 0;
 343         for (; i + uidlen <= rawbit;) {
 344                 failed = 0;
 345     for (bit = 0; bit < uidlen; bit++) {
 346       if (bits[bit] != rawbits[i++]) {
 347         failed = 1;
 348         break;
 349       }
 350     }
 351     if (failed == 1) {
 352       break;
 353     }
 354     times += 1;
 355   }
 356
 357   PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
 358
 359   // Remodulating for tag cloning
 360         // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod)
 361         // since this changes graphbuffer data.
 362   GraphTraceLen = 32*uidlen;
 363   i = 0;
 364   int phase = 0;
 365   for (bit = 0; bit < uidlen; bit++) {
 366     if (bits[bit] == 0) {
 367       phase = 0;
 368     } else {
 369       phase = 1;
 370     }
 371     int j;
 372     for (j = 0; j < 32; j++) {
 373       GraphBuffer[i++] = phase;
 374       phase = !phase;
 375     }
 376   }
 377
 378   RepaintGraphWindow();
 379   return 1;
 380 }
 381
 382 int CmdIndalaClone(const char *Cmd)
 383 {
 384   UsbCommand c;
 385         unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
 386
 387         uid1 =  uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
 388   int n = 0, i = 0;
 389
 390   if (strchr(Cmd,'l') != 0) {
 391     while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 392       uid1 = (uid1 << 4) | (uid2 >> 28);
 393       uid2 = (uid2 << 4) | (uid3 >> 28);
 394       uid3 = (uid3 << 4) | (uid4 >> 28);
 395       uid4 = (uid4 << 4) | (uid5 >> 28);
 396       uid5 = (uid5 << 4) | (uid6 >> 28);
 397       uid6 = (uid6 << 4) | (uid7 >> 28);
 398         uid7 = (uid7 << 4) | (n & 0xf);
 399     }
 400     PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
 401     c.cmd = CMD_INDALA_CLONE_TAG_L;
 402     c.d.asDwords[0] = uid1;
 403     c.d.asDwords[1] = uid2;
 404     c.d.asDwords[2] = uid3;
 405     c.d.asDwords[3] = uid4;
 406     c.d.asDwords[4] = uid5;
 407     c.d.asDwords[5] = uid6;
 408     c.d.asDwords[6] = uid7;
 409         } else {
 410     while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
 411       uid1 = (uid1 << 4) | (uid2 >> 28);
 412       uid2 = (uid2 << 4) | (n & 0xf);
 413     }
 414     PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
 415     c.cmd = CMD_INDALA_CLONE_TAG;
 416     c.arg[0] = uid1;
 417     c.arg[1] = uid2;
 418   }
 419
 420   SendCommand(&c);
 421   return 0;
 422 }
 423
 424 int usage_lf_read()
 425 {
 426         PrintAndLog("Usage: lf read");
 427         PrintAndLog("Options:        ");
 428         PrintAndLog("       h            This help");
 429         PrintAndLog("       s            silent run no printout");
 430         PrintAndLog("This function takes no arguments. ");
 431         PrintAndLog("Use 'lf config' to set parameters.");
 432         return 0;
 433 }
 434 int usage_lf_snoop()
 435 {
 436         PrintAndLog("Usage: lf snoop");
 437         PrintAndLog("Options:        ");
 438         PrintAndLog("       h            This help");
 439         PrintAndLog("This function takes no arguments. ");
 440         PrintAndLog("Use 'lf config' to set parameters.");
 441         return 0;
 442 }
 443
 444 int usage_lf_config()
 445 {
 446         PrintAndLog("Usage: lf config [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
 447         PrintAndLog("Options:        ");
 448         PrintAndLog("       h             This help");
 449         PrintAndLog("       L             Low frequency (125 KHz)");
 450         PrintAndLog("       H             High frequency (134 KHz)");
 451         PrintAndLog("       q <divisor>   Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
 452         PrintAndLog("       b <bps>       Sets resolution of bits per sample. Default (max): 8");
 453         PrintAndLog("       d <decim>     Sets decimation. A value of N saves only 1 in N samples. Default: 1");
 454         PrintAndLog("       a [0|1]       Averaging - if set, will average the stored sample value when decimating. Default: 1");
 455         PrintAndLog("       t <threshold> Sets trigger threshold. 0 means no threshold (range: 0-128)");
 456         PrintAndLog("Examples:");
 457         PrintAndLog("      lf config b 8 L");
 458         PrintAndLog("                    Samples at 125KHz, 8bps.");
 459         PrintAndLog("      lf config H b 4 d 3");
 460         PrintAndLog("                    Samples at 134KHz, averages three samples into one, stored with ");
 461         PrintAndLog("                    a resolution of 4 bits per sample.");
 462         PrintAndLog("      lf read");
 463         PrintAndLog("                    Performs a read (active field)");
 464         PrintAndLog("      lf snoop");
 465         PrintAndLog("                    Performs a snoop (no active field)");
 466         return 0;
 467 }
 468
 469 int CmdLFSetConfig(const char *Cmd)
 470 {
 471
 472         uint8_t divisor =  0;//Frequency divisor
 473         uint8_t bps = 0; // Bits per sample
 474         uint8_t decimation = 0; //How many to keep
 475         bool averaging = 1; // Defaults to true
 476         bool errors = FALSE;
 477         int trigger_threshold =-1;//Means no change
 478         uint8_t unsigned_trigg = 0;
 479
 480         uint8_t cmdp =0;
 481         while(param_getchar(Cmd, cmdp) != 0x00)
 482         {
 483                 switch(param_getchar(Cmd, cmdp))
 484                 {
 485                 case 'h':
 486                         return usage_lf_config();
 487                 case 'H':
 488                         divisor = 88;
 489                         cmdp++;
 490                         break;
 491                 case 'L':
 492                         divisor = 95;
 493                         cmdp++;
 494                         break;
 495                 case 'q':
 496                         errors |= param_getdec(Cmd,cmdp+1,&divisor);
 497                         cmdp+=2;
 498                         break;
 499                 case 't':
 500                         errors |= param_getdec(Cmd,cmdp+1,&unsigned_trigg);
 501                         cmdp+=2;
 502                         if(!errors) trigger_threshold = unsigned_trigg;
 503                         break;
 504                 case 'b':
 505                         errors |= param_getdec(Cmd,cmdp+1,&bps);
 506                         cmdp+=2;
 507                         break;
 508                 case 'd':
 509                         errors |= param_getdec(Cmd,cmdp+1,&decimation);
 510                         cmdp+=2;
 511                         break;
 512                 case 'a':
 513                         averaging = param_getchar(Cmd,cmdp+1) == '1';
 514                         cmdp+=2;
 515                         break;
 516                 default:
 517                         PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 518                         errors = 1;
 519                         break;
 520                 }
 521                 if(errors) break;
 522         }
 523         if(cmdp == 0)
 524         {
 525                 errors = 1;// No args
 526         }
 527
 528         //Validations
 529         if(errors)
 530         {
 531                 return usage_lf_config();
 532         }
 533         //Bps is limited to 8, so fits in lower half of arg1
 534         if(bps >> 8) bps = 8;
 535
 536         sample_config config = {
 537                 decimation,bps,averaging,divisor,trigger_threshold
 538         };
 539         //Averaging is a flag on high-bit of arg[1]
 540         UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG};
 541         memcpy(c.d.asBytes,&config,sizeof(sample_config));
 542         SendCommand(&c);
 543         return 0;
 544 }
 545
 546 int CmdLFRead(const char *Cmd)
 547 {
 548
 549         uint8_t cmdp = 0;
 550         bool arg1 = false;
 551         if (param_getchar(Cmd, cmdp) == 'h')
 552         {
 553                 return usage_lf_read();
 554         }
 555         if (param_getchar(Cmd, cmdp) == 's') arg1 = true; //suppress print
 556         //And ship it to device
 557         UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {arg1,0,0}};
 558         SendCommand(&c);
 559         //WaitForResponse(CMD_ACK,NULL);
 560         if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
 561                 PrintAndLog("command execution time out");
 562                 return 1;
 563         }
 564
 565         return 0;
 566 }
 567
 568 int CmdLFSnoop(const char *Cmd)
 569 {
 570         uint8_t cmdp =0;
 571         if(param_getchar(Cmd, cmdp) == 'h')
 572         {
 573                 return usage_lf_snoop();
 574         }
 575
 576         UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
 577         SendCommand(&c);
 578         WaitForResponse(CMD_ACK,NULL);
 579         return 0;
 580 }
 581
 582 static void ChkBitstream(const char *str)
 583 {
 584   int i;
 585
 586   /* convert to bitstream if necessary */
 587         for (i = 0; i < (int)(GraphTraceLen / 2); i++){
 588                 if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
 589       CmdGetBitStream("");
 590       break;
 591     }
 592   }
 593 }
 594 //Attempt to simulate any wave in buffer (one bit per output sample)
 595 // converts GraphBuffer to bitstream (based on zero crossings) if needed.
 596 int CmdLFSim(const char *Cmd)
 597 {
 598   int i,j;
 599   static int gap;
 600
 601   sscanf(Cmd, "%i", &gap);
 602
 603         // convert to bitstream if necessary
 604
 605   ChkBitstream(Cmd);
 606
 607         //can send only 512 bits at a time (1 byte sent per bit...)
 608   printf("Sending [%d bytes]", GraphTraceLen);
 609   for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
 610     UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
 611
 612     for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
 613       c.d.asBytes[j] = GraphBuffer[i+j];
 614     }
 615     SendCommand(&c);
 616     WaitForResponse(CMD_ACK,NULL);
 617     printf(".");
 618   }
 619
 620   printf("\n");
 621   PrintAndLog("Starting to simulate");
 622   UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
 623   SendCommand(&c);
 624   return 0;
 625 }
 626
 627 int usage_lf_simfsk(void)
 628 {
 629   //print help
 630   PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
 631   PrintAndLog("Options:        ");
 632   PrintAndLog("       h              This help");
 633   PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
 634   PrintAndLog("       i              invert data");
 635   PrintAndLog("       H <fcHigh>     Manually set the larger Field Clock");
 636   PrintAndLog("       L <fcLow>      Manually set the smaller Field Clock");
 637   //PrintAndLog("       s              TBD- -to enable a gap between playback repetitions - default: no gap");
 638   PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
 639   PrintAndLog("\n  NOTE: if you set one clock manually set them all manually");
 640   return 0;
 641 }
 642
 643 int usage_lf_simask(void)
 644 {
 645   //print help
 646   PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
 647   PrintAndLog("Options:        ");
 648   PrintAndLog("       h              This help");
 649   PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
 650   PrintAndLog("       i              invert data");
 651   PrintAndLog("       b              sim ask/biphase");
 652   PrintAndLog("       m              sim ask/manchester - Default");
 653   PrintAndLog("       r              sim ask/raw");
 654   PrintAndLog("       s              TBD- -to enable a gap between playback repetitions - default: no gap");
 655   PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
 656   return 0;
 657 }
 658
 659 int usage_lf_simpsk(void)
 660 {
 661   //print help
 662   PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
 663   PrintAndLog("Options:        ");
 664   PrintAndLog("       h              This help");
 665   PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
 666   PrintAndLog("       i              invert data");
 667   PrintAndLog("       1              set PSK1 (default)");
 668   PrintAndLog("       2              set PSK2");
 669   PrintAndLog("       3              set PSK3");
 670   PrintAndLog("       r <carrier>    2|4|8 are valid carriers: default = 2");
 671   PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
 672   return 0;
 673 }
 674
 675 // by marshmellow - sim ask data given clock, fcHigh, fcLow, invert
 676 // - allow pull data from DemodBuffer
 677 int CmdLFfskSim(const char *Cmd)
 678 {
 679         //might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
 680         // otherwise will need FChigh, FClow, Clock, and bitstream
 681   uint8_t fcHigh=0, fcLow=0, clk=0;
 682   uint8_t invert=0;
 683   bool errors = FALSE;
 684   char hexData[32] = {0x00}; // store entered hex data
 685   uint8_t data[255] = {0x00};
 686   int dataLen = 0;
 687   uint8_t cmdp = 0;
 688   while(param_getchar(Cmd, cmdp) != 0x00)
 689   {
 690     switch(param_getchar(Cmd, cmdp))
 691     {
 692     case 'h':
 693       return usage_lf_simfsk();
 694     case 'i':
 695       invert = 1;
 696       cmdp++;
 697       break;
 698     case 'c':
 699       errors |= param_getdec(Cmd,cmdp+1,&clk);
 700       cmdp+=2;
 701       break;
 702     case 'H':
 703       errors |= param_getdec(Cmd,cmdp+1,&fcHigh);
 704       cmdp+=2;
 705       break;
 706     case 'L':
 707       errors |= param_getdec(Cmd,cmdp+1,&fcLow);
 708       cmdp+=2;
 709       break;
 710     //case 's':
 711     //  separator=1;
 712     //  cmdp++;
 713     //  break;
 714     case 'd':
 715       dataLen = param_getstr(Cmd, cmdp+1, hexData);
 716       if (dataLen==0) {
 717         errors=TRUE;
 718       } else {
 719         dataLen = hextobinarray((char *)data, hexData);
 720       }
 721       if (dataLen==0) errors=TRUE;
 722       if (errors) PrintAndLog ("Error getting hex data");
 723       cmdp+=2;
 724       break;
 725     default:
 726       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 727       errors = TRUE;
 728       break;
 729     }
 730     if(errors) break;
 731   }
 732   if(cmdp == 0 && DemodBufferLen == 0)
 733   {
 734     errors = TRUE;// No args
 735   }
 736
 737   //Validations
 738   if(errors)
 739   {
 740     return usage_lf_simfsk();
 741   }
 742
 743   if (dataLen == 0){ //using DemodBuffer
 744     if (clk==0 || fcHigh==0 || fcLow==0){ //manual settings must set them all
 745       uint8_t ans = fskClocks(&fcHigh, &fcLow, &clk, 0);
 746       if (ans==0){
 747         if (!fcHigh) fcHigh=10;
 748         if (!fcLow) fcLow=8;
 749         if (!clk) clk=50;
 750       }
 751     }
 752   } else {
 753     setDemodBuf(data, dataLen, 0);
 754   }
 755
 756         //default if not found
 757   if (clk == 0) clk = 50;
 758   if (fcHigh == 0) fcHigh = 10;
 759   if (fcLow == 0) fcLow = 8;
 760
 761   uint16_t arg1, arg2;
 762   arg1 = fcHigh << 8 | fcLow;
 763   arg2 = invert << 8 | clk;
 764   size_t size = DemodBufferLen;
 765   if (size > USB_CMD_DATA_SIZE) {
 766     PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
 767     size = USB_CMD_DATA_SIZE;
 768   }
 769   UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
 770
 771   memcpy(c.d.asBytes, DemodBuffer, size);
 772   SendCommand(&c);
 773   return 0;
 774 }
 775
 776 // by marshmellow - sim ask data given clock, invert, manchester or raw, separator
 777 // - allow pull data from DemodBuffer
 778 int CmdLFaskSim(const char *Cmd)
 779 {
 780   //autodetect clock from Graphbuffer if using demod buffer
 781         // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
 782   uint8_t encoding = 1, separator = 0;
 783   uint8_t clk=0, invert=0;
 784   bool errors = FALSE;
 785   char hexData[32] = {0x00};
 786   uint8_t data[255]= {0x00}; // store entered hex data
 787   int dataLen = 0;
 788   uint8_t cmdp = 0;
 789   while(param_getchar(Cmd, cmdp) != 0x00)
 790   {
 791     switch(param_getchar(Cmd, cmdp))
 792     {
 793     case 'h':
 794       return usage_lf_simask();
 795     case 'i':
 796       invert = 1;
 797       cmdp++;
 798       break;
 799     case 'c':
 800       errors |= param_getdec(Cmd,cmdp+1,&clk);
 801       cmdp+=2;
 802       break;
 803     case 'b':
 804       encoding=2; //biphase
 805       cmdp++;
 806       break;
 807     case 'm':
 808       encoding=1;
 809       cmdp++;
 810       break;
 811     case 'r':
 812       encoding=0;
 813       cmdp++;
 814       break;
 815     case 's':
 816       separator=1;
 817       cmdp++;
 818       break;
 819     case 'd':
 820       dataLen = param_getstr(Cmd, cmdp+1, hexData);
 821       if (dataLen==0) {
 822         errors=TRUE;
 823       } else {
 824         dataLen = hextobinarray((char *)data, hexData);
 825       }
 826       if (dataLen==0) errors=TRUE;
 827       if (errors) PrintAndLog ("Error getting hex data, datalen: %d",dataLen);
 828         cmdp+=2;
 829       break;
 830     default:
 831       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 832       errors = TRUE;
 833       break;
 834     }
 835     if(errors) break;
 836   }
 837   if(cmdp == 0 && DemodBufferLen == 0)
 838   {
 839     errors = TRUE;// No args
 840   }
 841
 842   //Validations
 843   if(errors)
 844   {
 845     return usage_lf_simask();
 846   }
 847   if (dataLen == 0){ //using DemodBuffer
 848     if (clk == 0) clk = GetAskClock("0", false, false);
 849   } else {
 850     setDemodBuf(data, dataLen, 0);
 851   }
 852   if (clk == 0) clk = 64;
 853   if (encoding == 0) clk = clk/2; //askraw needs to double the clock speed
 854   uint16_t arg1, arg2;
 855   size_t size=DemodBufferLen;
 856   arg1 = clk << 8 | encoding;
 857   arg2 = invert << 8 | separator;
 858   if (size > USB_CMD_DATA_SIZE) {
 859     PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
 860     size = USB_CMD_DATA_SIZE;
 861   }
 862   UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
 863   PrintAndLog("preparing to sim ask data: %d bits", size);
 864   memcpy(c.d.asBytes, DemodBuffer, size);
 865   SendCommand(&c);
 866   return 0;
 867 }
 868
 869 // by marshmellow - sim psk data given carrier, clock, invert
 870 // - allow pull data from DemodBuffer or parameters
 871 int CmdLFpskSim(const char *Cmd)
 872 {
 873   //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
 874   //will need carrier, Clock, and bitstream
 875   uint8_t carrier=0, clk=0;
 876   uint8_t invert=0;
 877   bool errors = FALSE;
 878   char hexData[32] = {0x00}; // store entered hex data
 879   uint8_t data[255] = {0x00};
 880   int dataLen = 0;
 881   uint8_t cmdp = 0;
 882   uint8_t pskType = 1;
 883   while(param_getchar(Cmd, cmdp) != 0x00)
 884   {
 885     switch(param_getchar(Cmd, cmdp))
 886     {
 887     case 'h':
 888       return usage_lf_simpsk();
 889     case 'i':
 890       invert = 1;
 891       cmdp++;
 892       break;
 893     case 'c':
 894       errors |= param_getdec(Cmd,cmdp+1,&clk);
 895       cmdp+=2;
 896       break;
 897     case 'r':
 898       errors |= param_getdec(Cmd,cmdp+1,&carrier);
 899       cmdp+=2;
 900       break;
 901     case '1':
 902       pskType=1;
 903       cmdp++;
 904       break;
 905     case '2':
 906       pskType=2;
 907       cmdp++;
 908       break;
 909     case '3':
 910       pskType=3;
 911       cmdp++;
 912       break;
 913     case 'd':
 914       dataLen = param_getstr(Cmd, cmdp+1, hexData);
 915       if (dataLen==0) {
 916         errors=TRUE;
 917       } else {
 918         dataLen = hextobinarray((char *)data, hexData);
 919       }
 920       if (dataLen==0) errors=TRUE;
 921       if (errors) PrintAndLog ("Error getting hex data");
 922       cmdp+=2;
 923       break;
 924     default:
 925       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
 926       errors = TRUE;
 927       break;
 928     }
 929     if (errors) break;
 930   }
 931   if (cmdp == 0 && DemodBufferLen == 0)
 932   {
 933     errors = TRUE;// No args
 934   }
 935
 936   //Validations
 937   if (errors)
 938   {
 939     return usage_lf_simpsk();
 940   }
 941   if (dataLen == 0){ //using DemodBuffer
 942     PrintAndLog("Getting Clocks");
 943     if (clk==0) clk = GetPskClock("", FALSE, FALSE);
 944     PrintAndLog("clk: %d",clk);
 945     if (!carrier) carrier = GetPskCarrier("", FALSE, FALSE);
 946     PrintAndLog("carrier: %d", carrier);
 947   } else {
 948     setDemodBuf(data, dataLen, 0);
 949   }
 950
 951   if (clk <= 0) clk = 32;
 952   if (carrier == 0) carrier = 2;
 953   if (pskType != 1){
 954     if (pskType == 2){
 955       //need to convert psk2 to psk1 data before sim
 956       psk2TOpsk1(DemodBuffer, DemodBufferLen);
 957     } else {
 958       PrintAndLog("Sorry, PSK3 not yet available");
 959     }
 960   }
 961   uint16_t arg1, arg2;
 962   arg1 = clk << 8 | carrier;
 963   arg2 = invert;
 964   size_t size=DemodBufferLen;
 965   if (size > USB_CMD_DATA_SIZE) {
 966     PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
 967     size=USB_CMD_DATA_SIZE;
 968   }
 969   UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
 970   PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
 971   memcpy(c.d.asBytes, DemodBuffer, size);
 972   SendCommand(&c);
 973
 974   return 0;
 975 }
 976
 977 int CmdLFSimBidir(const char *Cmd)
 978 {
 979   // Set ADC to twice the carrier for a slight supersampling
 980   // HACK: not implemented in ARMSRC.
 981   PrintAndLog("Not implemented yet.");
 982   UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
 983   SendCommand(&c);
 984   return 0;
 985 }
 986
 987 int CmdVchDemod(const char *Cmd)
 988 {
 989   // Is this the entire sync pattern, or does this also include some
 990   // data bits that happen to be the same everywhere? That would be
 991   // lovely to know.
 992   static const int SyncPattern[] = {
 993     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
 994     1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 995     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
 996     1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 997     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
 998     1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
 999     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
1000     1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
1001     1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
1002     1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
1003   };
1004
1005   // So first, we correlate for the sync pattern, and mark that.
1006   int bestCorrel = 0, bestPos = 0;
1007   int i;
1008   // It does us no good to find the sync pattern, with fewer than
1009   // 2048 samples after it...
1010   for (i = 0; i < (GraphTraceLen-2048); i++) {
1011     int sum = 0;
1012     int j;
1013     for (j = 0; j < arraylen(SyncPattern); j++) {
1014       sum += GraphBuffer[i+j]*SyncPattern[j];
1015     }
1016     if (sum > bestCorrel) {
1017       bestCorrel = sum;
1018       bestPos = i;
1019     }
1020   }
1021   PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
1022
1023   char bits[257];
1024   bits[256] = '\0';
1025
1026   int worst = INT_MAX;
1027   int worstPos = 0;
1028
1029   for (i = 0; i < 2048; i += 8) {
1030     int sum = 0;
1031     int j;
1032     for (j = 0; j < 8; j++) {
1033       sum += GraphBuffer[bestPos+i+j];
1034     }
1035     if (sum < 0) {
1036       bits[i/8] = '.';
1037     } else {
1038       bits[i/8] = '1';
1039     }
1040     if(abs(sum) < worst) {
1041       worst = abs(sum);
1042       worstPos = i;
1043     }
1044   }
1045   PrintAndLog("bits:");
1046   PrintAndLog("%s", bits);
1047   PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
1048
1049   if (strcmp(Cmd, "clone")==0) {
1050     GraphTraceLen = 0;
1051     char *s;
1052     for(s = bits; *s; s++) {
1053       int j;
1054       for(j = 0; j < 16; j++) {
1055         GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
1056       }
1057     }
1058     RepaintGraphWindow();
1059   }
1060   return 0;
1061 }
1062
1063 //by marshmellow
1064 int CmdLFfind(const char *Cmd)
1065 {
1066   int ans=0;
1067   char cmdp = param_getchar(Cmd, 0);
1068   char testRaw = param_getchar(Cmd, 1);
1069   if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
1070     PrintAndLog("Usage:  lf search <0|1> [u]");
1071     PrintAndLog("     <use data from Graphbuffer> , if not set, try reading data from tag.");
1072     PrintAndLog("     [Search for Unknown tags] , if not set, reads only known tags.");
1073     PrintAndLog("");
1074     PrintAndLog("    sample: lf search     = try reading data from tag & search for known tags");
1075     PrintAndLog("          : lf search 1   = use data from GraphBuffer & search for known tags");
1076     PrintAndLog("          : lf search u   = try reading data from tag & search for known and unknown tags");
1077     PrintAndLog("          : lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
1078
1079     return 0;
1080   }
1081
1082   if (!offline && (cmdp != '1')){
1083                 CmdLFRead("s");
1084                 getSamples("30000",false);
1085   } else if (GraphTraceLen < 1000) {
1086     PrintAndLog("Data in Graphbuffer was too small.");
1087     return 0;
1088   }
1089   if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
1090
1091   PrintAndLog("NOTE: some demods output possible binary\n  if it finds something that looks like a tag");
1092   PrintAndLog("False Positives ARE possible\n");
1093   PrintAndLog("\nChecking for known tags:\n");
1094
1095   ans=CmdFSKdemodIO("");
1096   if (ans>0) {
1097     PrintAndLog("\nValid IO Prox ID Found!");
1098     return 1;
1099   }
1100
1101   ans=CmdFSKdemodPyramid("");
1102   if (ans>0) {
1103     PrintAndLog("\nValid Pyramid ID Found!");
1104     return 1;
1105   }
1106
1107   ans=CmdFSKdemodParadox("");
1108   if (ans>0) {
1109     PrintAndLog("\nValid Paradox ID Found!");
1110     return 1;
1111   }
1112
1113   ans=CmdFSKdemodAWID("");
1114   if (ans>0) {
1115     PrintAndLog("\nValid AWID ID Found!");
1116     return 1;
1117   }
1118
1119   ans=CmdFSKdemodHID("");
1120   if (ans>0) {
1121     PrintAndLog("\nValid HID Prox ID Found!");
1122     return 1;
1123   }
1124
1125   //add psk and indala
1126   ans=CmdIndalaDecode("");
1127   if (ans>0) {
1128     PrintAndLog("\nValid Indala ID Found!");
1129     return 1;
1130   }
1131
1132   ans=CmdAskEM410xDemod("");
1133   if (ans>0) {
1134     PrintAndLog("\nValid EM410x ID Found!");
1135     return 1;
1136   }
1137
1138   ans=CmdG_Prox_II_Demod("");
1139   if (ans>0) {
1140     PrintAndLog("\nValid Guardall G-Prox II ID Found!");
1141     return 1;
1142   }
1143
1144         ans=CmdFDXBdemodBI("");
1145         if (ans>0) {
1146                 PrintAndLog("\nValid FDX-B ID Found!");
1147                 return 1;
1148         }
1149
1150         ans=EM4x50Read("", false);
1151         if (ans>0) {
1152                 PrintAndLog("\nValid EM4x50 ID Found!");
1153                 return 1;
1154         }
1155
1156         ans=CmdPSKNexWatch("");
1157         if (ans>0) {
1158                 PrintAndLog("\nValid NexWatch ID Found!");
1159                 return 1;
1160         }
1161
1162   PrintAndLog("\nNo Known Tags Found!\n");
1163   if (testRaw=='u' || testRaw=='U'){
1164     //test unknown tag formats (raw mode)
1165     PrintAndLog("\nChecking for Unknown tags:\n");
1166     ans=AutoCorrelate(4000, FALSE, FALSE);
1167
1168     if (ans > 0) {
1169
1170                 PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
1171
1172                 if ( ans % 8 == 0)  {
1173                         int bytes = (ans / 8);
1174                         PrintAndLog("Possible %d bytes", bytes);
1175                         int blocks = 0;
1176                         if ( bytes % 2 == 0) {
1177                                 blocks = (bytes / 2);
1178                                 PrintAndLog("Possible  2 blocks, width %d", blocks);
1179                         }
1180                         if ( bytes % 4 == 0) {
1181                                 blocks = (bytes / 4);
1182                                 PrintAndLog("Possible  4 blocks, width %d", blocks);
1183                         }
1184                         if ( bytes % 8 == 0) {
1185                                 blocks = (bytes / 8);
1186                                 PrintAndLog("Possible  8 blocks, width %d", blocks);
1187                         }
1188                         if ( bytes % 16 == 0) {
1189                                 blocks = (bytes / 16);
1190                                 PrintAndLog("Possible 16 blocks, width %d", blocks);
1191                         }
1192                 }
1193         }
1194                 ans=GetFskClock("",FALSE,FALSE);
1195     if (ans != 0){ //fsk
1196                         ans=FSKrawDemod("",TRUE);
1197       if (ans>0) {
1198         PrintAndLog("\nUnknown FSK Modulated Tag Found!");
1199         return 1;
1200       }
1201     }
1202                 ans=ASKDemod("0 0 0",TRUE,FALSE,1);
1203     if (ans>0) {
1204       PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
1205       PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
1206       return 1;
1207     }
1208     ans=CmdPSK1rawDemod("");
1209     if (ans>0) {
1210       PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
1211       PrintAndLog("\nCould also be PSK3 - [currently not supported]");
1212       PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
1213       return 1;
1214     }
1215     PrintAndLog("\nNo Data Found!\n");
1216   }
1217   return 0;
1218 }
1219
1220 static command_t CommandTable[] =
1221 {
1222   {"help",        CmdHelp,            1, "This help"},
1223         {"awid",        CmdLFAWID,          1, "{ AWID RFIDs... }"},
1224   {"em4x",        CmdLFEM4X,          1, "{ EM4X RFIDs... }"},
1225   {"hid",         CmdLFHID,           1, "{ HID RFIDs... }"},
1226   {"hitag",       CmdLFHitag,         1, "{ HITAG RFIDs... }"},
1227   {"io",          CmdLFIO,                1, "{ IOPROX RFIDs... }"},
1228   {"pcf7931",     CmdLFPCF7931,       1, "{ PCF7931 RFIDs... }"},
1229   {"ti",          CmdLFTI,            1, "{ TI RFIDs... }"},
1230   {"t55xx",       CmdLFT55XX,         1, "{ T55X7 RFIDs... }"},
1231   {"viking",      CmdLFViking,        1, "{ Viking RFIDs... }"},
1232   {"config",      CmdLFSetConfig,     0, "Set config for LF sampling, bit/sample, decimation, frequency"},
1233
1234   {"cmdread",     CmdLFCommandRead,   0, "<off period> <'0' period> <'1' period> <command> ['h' 134] \n\t\t-- Modulate LF reader field to send command before read (all periods in microseconds)"},
1235   {"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},
1236   {"indalademod", CmdIndalaDemod,     1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
1237   {"indalaclone", CmdIndalaClone,     0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
1238   {"read",        CmdLFRead,          0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
1239   {"search",      CmdLFfind,          1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) \n\t\t-- 'u' to search for unknown tags"},
1240   {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
1241   {"simask",      CmdLFaskSim,        0, "[clock] [invert <1|0>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
1242   {"simfsk",      CmdLFfskSim,        0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
1243   {"simpsk",      CmdLFpskSim,        0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] \n\t\t-- Simulate LF PSK tag from demodbuffer or input"},
1244   {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
1245   {"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold] -- Snoop LF (l:125khz, h:134khz)"},
1246   {"vchdemod",    CmdVchDemod,        1, "['clone'] -- Demodulate samples for VeriChip"},
1247   {NULL, NULL, 0, NULL}
1248 };
1249
1250 int CmdLF(const char *Cmd)
1251 {
1252   CmdsParse(CommandTable, Cmd);
1253   return 0;
1254 }
1255
1256 int CmdHelp(const char *Cmd)
1257 {
1258   CmdsHelp(CommandTable);
1259   return 0;
1260 }