Merge pull request #558 from pwpiwi/fix_alignment

[proxmark3-svn] / client / cmdlf.c

diff --git a/client/cmdlf.c b/client/cmdlf.c
index e3361cb50b3b33e38aebd540dbe505405d543173..ef9c3cbbf9353cb60b626165a9925a6da9586813 100644 (file)
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -12,627 +12,1139 @@
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>
 #include <stdlib.h>
 #include <string.h>
 #include <limits.h>

+#include <stdbool.h>
+#include <stdint.h>

 #include "proxmark3.h"
 #include "proxmark3.h"

-#include "data.h"
-#include "graph.h"
-#include "ui.h"
-#include "cmdparser.h"
-#include "cmdmain.h"
-#include "cmddata.h"
-#include "util.h"

 #include "cmdlf.h"
 #include "cmdlf.h"

-#include "cmdlfhid.h"
-#include "cmdlfti.h"
-#include "cmdlfem4x.h"
-#include "cmdlfhitag.h"
-#include "cmdlft55xx.h"
-#include "cmdlfpcf7931.h"
-#include "cmdlfio.h"
-
+#include "lfdemod.h"     // for psk2TOpsk1
+#include "util.h"        // for parsing cli command utils
+#include "ui.h"          // for show graph controls
+#include "graph.h"       // for graph data
+#include "cmdparser.h"   // for getting cli commands included in cmdmain.h
+#include "cmdmain.h"     // for sending cmds to device
+#include "data.h"        // for GetFromBigBuf
+#include "cmddata.h"     // for `lf search`
+#include "cmdlfawid.h"   // for awid menu
+#include "cmdlfem4x.h"   // for em4x menu
+#include "cmdlfhid.h"    // for hid menu
+#include "cmdlfhitag.h"  // for hitag menu
+#include "cmdlfio.h"     // for ioprox menu
+#include "cmdlft55xx.h"  // for t55xx menu
+#include "cmdlfti.h"     // for ti menu
+#include "cmdlfpresco.h" // for presco menu
+#include "cmdlfpcf7931.h"// for pcf7931 menu
+#include "cmdlfpyramid.h"// for pyramid menu
+#include "cmdlfviking.h" // for viking menu
+#include "cmdlfcotag.h"  // for COTAG menu
+#include "cmdlfvisa2000.h"  // for VISA2000 menu
+#include "cmdlfindala.h" // for indala menu
+#include "cmdlfgproxii.h"// for gproxii menu
+#include "cmdlffdx.h"    // for fdx-b menu
+#include "cmdlfparadox.h"// for paradox menu
+#include "cmdlfnexwatch.h"//for nexwatch menu
+#include "cmdlfjablotron.h" //for jablotron menu
+#include "cmdlfnoralsy.h"// for noralsy menu
+#include "cmdlfsecurakey.h"//for securakey menu
+#include "cmdlfpac.h"    // for pac menu
+
+bool g_lf_threshold_set = false;

 static int CmdHelp(const char *Cmd);
 
 static int CmdHelp(const char *Cmd);
 

+
+
+int usage_lf_cmdread(void)
+{
+       PrintAndLog("Usage: lf cmdread d <delay period> z <zero period> o <one period> c <cmdbytes> [H] ");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h             This help");
+       PrintAndLog("       L             Low frequency (125 KHz)");
+       PrintAndLog("       H             High frequency (134 KHz)");
+       PrintAndLog("       d <delay>     delay OFF period");
+       PrintAndLog("       z <zero>      time period ZERO");
+       PrintAndLog("       o <one>       time period ONE");
+       PrintAndLog("       c <cmd>       Command bytes");
+       PrintAndLog("       ************* All periods in microseconds");
+       PrintAndLog("Examples:");
+       PrintAndLog("      lf cmdread d 80 z 100 o 200 c 11000");
+       PrintAndLog("      lf cmdread d 80 z 100 o 100 c 11000 H");
+       return 0;
+}
+

 /* send a command before reading */
 int CmdLFCommandRead(const char *Cmd)
 {
 /* send a command before reading */
 int CmdLFCommandRead(const char *Cmd)
 {

-  static char dummy[3];
+       static char dummy[3] = {0x20,0x00,0x00};
+       UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
+       bool errors = false;
+       //uint8_t divisor = 95; //125khz
+       uint8_t cmdp = 0;
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+               case 'h':
+                       return usage_lf_cmdread();
+               case 'H':
+                       //divisor = 88;
+                       dummy[1]='h';
+                       cmdp++;
+                       break;
+               case 'L':
+                       cmdp++;
+                       break;
+               case 'c':
+                       param_getstr(Cmd, cmdp+1, (char *)&c.d.asBytes, sizeof(c.d.asBytes));
+                       cmdp+=2;
+                       break;
+               case 'd':
+                       c.arg[0] = param_get32ex(Cmd, cmdp+1, 0, 10);
+                       cmdp+=2;
+                       break;
+               case 'z':
+                       c.arg[1] = param_get32ex(Cmd, cmdp+1, 0, 10);
+                       cmdp+=2;
+                       break;
+               case 'o':
+                       c.arg[2] = param_get32ex(Cmd, cmdp+1, 0, 10);
+                       cmdp+=2;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                       errors = 1;
+                       break;
+               }
+               if(errors) break;
+       }
+       // No args
+       if(cmdp == 0) errors = 1;

 
 

-  dummy[0]= ' ';
+       //Validations
+       if(errors) return usage_lf_cmdread();
+       
+       // in case they specified 'H'
+       strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy);

 
 

-  UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K};
-  sscanf(Cmd, "%"lli" %"lli" %"lli" %s %s", &c.arg[0], &c.arg[1], &c.arg[2],(char*)(&c.d.asBytes),(char*)(&dummy+1));
-  // in case they specified 'h'
-  strcpy((char *)&c.d.asBytes + strlen((char *)c.d.asBytes), dummy);
-  SendCommand(&c);
-  return 0;
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;

 }
 
 int CmdFlexdemod(const char *Cmd)
 {
 }
 
 int CmdFlexdemod(const char *Cmd)
 {

-  int i;
-  for (i = 0; i < GraphTraceLen; ++i) {
-    if (GraphBuffer[i] < 0) {
-      GraphBuffer[i] = -1;
-    } else {
-      GraphBuffer[i] = 1;
-    }
-  }
-
-#define LONG_WAIT 100
-  int start;
-  for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
-    int first = GraphBuffer[start];
-    for (i = start; i < start + LONG_WAIT; i++) {
-      if (GraphBuffer[i] != first) {
-        break;
-      }
-    }
-    if (i == (start + LONG_WAIT)) {
-      break;
-    }
-  }
-  if (start == GraphTraceLen - LONG_WAIT) {
-    PrintAndLog("nothing to wait for");
-    return 0;
-  }
-
-  GraphBuffer[start] = 2;
-  GraphBuffer[start+1] = -2;
+       int i;
+       for (i = 0; i < GraphTraceLen; ++i) {
+               if (GraphBuffer[i] < 0) {
+                       GraphBuffer[i] = -1;
+               } else {
+                       GraphBuffer[i] = 1;
+               }
+       }
+
+ #define LONG_WAIT 100
+       int start;
+       for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
+               int first = GraphBuffer[start];
+               for (i = start; i < start + LONG_WAIT; i++) {
+                       if (GraphBuffer[i] != first) {
+                               break;
+                       }
+               }
+               if (i == (start + LONG_WAIT)) {
+                       break;
+               }
+       }
+       if (start == GraphTraceLen - LONG_WAIT) {
+               PrintAndLog("nothing to wait for");
+               return 0;
+       }
+
+       GraphBuffer[start] = 2;
+       GraphBuffer[start+1] = -2;

        uint8_t bits[64] = {0x00};
 
        int bit, sum;
        uint8_t bits[64] = {0x00};
 
        int bit, sum;

-  i = start;
-  for (bit = 0; bit < 64; bit++) {
+       i = start;
+       for (bit = 0; bit < 64; bit++) {

                sum = 0;
                for (int j = 0; j < 16; j++) {
                sum = 0;
                for (int j = 0; j < 16; j++) {

-      sum += GraphBuffer[i++];
-    }
+                       sum += GraphBuffer[i++];
+               }

 
                bits[bit] = (sum > 0) ? 1 : 0;
 
 
                bits[bit] = (sum > 0) ? 1 : 0;
 

-    PrintAndLog("bit %d sum %d", bit, sum);
-  }
-
-  for (bit = 0; bit < 64; bit++) {
-    int j;
-    int sum = 0;
-    for (j = 0; j < 16; j++) {
-      sum += GraphBuffer[i++];
-    }
-    if (sum > 0 && bits[bit] != 1) {
-      PrintAndLog("oops1 at %d", bit);
-    }
-    if (sum < 0 && bits[bit] != 0) {
-      PrintAndLog("oops2 at %d", bit);
-    }
-  }
+               PrintAndLog("bit %d sum %d", bit, sum);
+       }
+
+       for (bit = 0; bit < 64; bit++) {
+               int j;
+               int sum = 0;
+               for (j = 0; j < 16; j++) {
+                       sum += GraphBuffer[i++];
+               }
+               if (sum > 0 && bits[bit] != 1) {
+                       PrintAndLog("oops1 at %d", bit);
+               }
+               if (sum < 0 && bits[bit] != 0) {
+                       PrintAndLog("oops2 at %d", bit);
+               }
+       }

 
        // HACK writing back to graphbuffer.
 
        // HACK writing back to graphbuffer.

-  GraphTraceLen = 32*64;
-  i = 0;
-  int phase = 0;
-  for (bit = 0; bit < 64; bit++) {
+       GraphTraceLen = 32*64;
+       i = 0;
+       int phase = 0;
+       for (bit = 0; bit < 64; bit++) {

        
                phase = (bits[bit] == 0) ? 0 : 1;
                
        
                phase = (bits[bit] == 0) ? 0 : 1;
                

-    int j;
-    for (j = 0; j < 32; j++) {
-      GraphBuffer[i++] = phase;
-      phase = !phase;
-    }
-  }
-
-  RepaintGraphWindow();
-  return 0;
+               int j;
+               for (j = 0; j < 32; j++) {
+                       GraphBuffer[i++] = phase;
+                       phase = !phase;
+               }
+       }
+
+       RepaintGraphWindow();
+       return 0;
+}      
+
+int usage_lf_read(void)
+{
+       PrintAndLog("Usage: lf read");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h            This help");
+       PrintAndLog("       s            silent run no printout");
+       PrintAndLog("       [# samples]  # samples to collect (optional)");     
+       PrintAndLog("Use 'lf config' to set parameters.");
+       return 0;

 }
 }

-  
-int CmdIndalaDemod(const char *Cmd)
+int usage_lf_snoop(void)

 {
 {

-  // Usage: recover 64bit UID by default, specify "224" as arg to recover a 224bit UID
-
-  int state = -1;
-  int count = 0;
-  int i, j;
-
-  // worst case with GraphTraceLen=64000 is < 4096
-  // under normal conditions it's < 2048
-
-  uint8_t rawbits[4096];
-  int rawbit = 0;
-  int worst = 0, worstPos = 0;
- // PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
-  for (i = 0; i < GraphTraceLen-1; i += 2) {
-    count += 1;
-    if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
-      if (state == 0) {
-        for (j = 0; j <  count - 8; j += 16) {
-          rawbits[rawbit++] = 0;
-        }
-        if ((abs(count - j)) > worst) {
-          worst = abs(count - j);
-          worstPos = i;
-        }
-      }
-      state = 1;
-      count = 0;
-    } else if ((GraphBuffer[i] < GraphBuffer[i + 1]) && (state != 0)) {
-      if (state == 1) {
-        for (j = 0; j <  count - 8; j += 16) {
-          rawbits[rawbit++] = 1;
-        }
-        if ((abs(count - j)) > worst) {
-          worst = abs(count - j);
-          worstPos = i;
-        }
-      }
-      state = 0;
-      count = 0;
-    }
-  }
-  
-  if (rawbit>0){
-    PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
-    PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
-       } else {
-               return 0;
-       }
+       PrintAndLog("Usage: lf snoop");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h            This help");
+       PrintAndLog("This function takes no arguments. ");
+       PrintAndLog("Use 'lf config' to set parameters.");
+       return 0;
+}

 
 

-  // Finding the start of a UID
-  int uidlen, long_wait;
-  if (strcmp(Cmd, "224") == 0) {
-    uidlen = 224;
-    long_wait = 30;
-  } else {
-    uidlen = 64;
-    long_wait = 29;
-  }
-
-  int start;
-  int first = 0;
-  for (start = 0; start <= rawbit - uidlen; start++) {
-    first = rawbits[start];
-    for (i = start; i < start + long_wait; i++) {
-      if (rawbits[i] != first) {
-        break;
-      }
-    }
-    if (i == (start + long_wait)) {
-      break;
-    }
-  }
-  
-  if (start == rawbit - uidlen + 1) {
-    PrintAndLog("nothing to wait for");
-    return 0;
-  }
-
-  // Inverting signal if needed
-  if (first == 1) {
-    for (i = start; i < rawbit; i++) {
-      rawbits[i] = !rawbits[i];
-    }
-  }
-
-  // Dumping UID
-       uint8_t bits[224] = {0x00};
-       char showbits[225] = {0x00};
-  int bit;
-  i = start;
-  int times = 0;
-       
-  if (uidlen > rawbit) {
-    PrintAndLog("Warning: not enough raw bits to get a full UID");
-    for (bit = 0; bit < rawbit; bit++) {
-      bits[bit] = rawbits[i++];
-      // As we cannot know the parity, let's use "." and "/"
-      showbits[bit] = '.' + bits[bit];
-    }
-    showbits[bit+1]='\0';
-    PrintAndLog("Partial UID=%s", showbits);
-    return 0;
-  } else {
-    for (bit = 0; bit < uidlen; bit++) {
-      bits[bit] = rawbits[i++];
-      showbits[bit] = '0' + bits[bit];
-    }
-    times = 1;
-  }
-  
-  //convert UID to HEX
-  uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-  int idx;
-       uid1 = uid2 = 0;
-       
-  if (uidlen==64){
-    for( idx=0; idx<64; idx++) {
-        if (showbits[idx] == '0') {
-        uid1=(uid1<<1)|(uid2>>31);
-        uid2=(uid2<<1)|0;
-        } else {
-        uid1=(uid1<<1)|(uid2>>31);
-        uid2=(uid2<<1)|1;
-        } 
-      }
-    PrintAndLog("UID=%s (%x%08x)", showbits, uid1, uid2);
-  }
-  else {
-               uid3 = uid4 = uid5 = uid6 = uid7 = 0;
-
-    for( idx=0; idx<224; idx++) {
-        uid1=(uid1<<1)|(uid2>>31);
-        uid2=(uid2<<1)|(uid3>>31);
-        uid3=(uid3<<1)|(uid4>>31);
-        uid4=(uid4<<1)|(uid5>>31);
-        uid5=(uid5<<1)|(uid6>>31);
-        uid6=(uid6<<1)|(uid7>>31);
-                       
-                       if (showbits[idx] == '0') 
-                               uid7 = (uid7<<1) | 0;
-                       else 
-                               uid7 = (uid7<<1) | 1;
-      }
-    PrintAndLog("UID=%s (%x%08x%08x%08x%08x%08x%08x)", showbits, uid1, uid2, uid3, uid4, uid5, uid6, uid7);
-  }
-
-  // Checking UID against next occurrences
-    int failed = 0;
-       for (; i + uidlen <= rawbit;) {
-               failed = 0;
-    for (bit = 0; bit < uidlen; bit++) {
-      if (bits[bit] != rawbits[i++]) {
-        failed = 1;
-        break;
-      }
-    }
-    if (failed == 1) {
-      break;
-    }
-    times += 1;
-  }
-
-  PrintAndLog("Occurrences: %d (expected %d)", times, (rawbit - start) / uidlen);
-
-  // Remodulating for tag cloning
-       // HACK: 2015-01-04 this will have an impact on our new way of seening lf commands (demod) 
-       // since this changes graphbuffer data.
-  GraphTraceLen = 32*uidlen;
-  i = 0;
-  int phase = 0;
-  for (bit = 0; bit < uidlen; bit++) {
-    if (bits[bit] == 0) {
-      phase = 0;
-    } else {
-      phase = 1;
-    }
-    int j;
-    for (j = 0; j < 32; j++) {
-      GraphBuffer[i++] = phase;
-      phase = !phase;
-    }
-  }
-
-  RepaintGraphWindow();
-  return 1;
+int usage_lf_config(void)
+{
+       PrintAndLog("Usage: lf config [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h             This help");
+       PrintAndLog("       L             Low frequency (125 KHz)");
+       PrintAndLog("       H             High frequency (134 KHz)");
+       PrintAndLog("       q <divisor>   Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
+       PrintAndLog("       b <bps>       Sets resolution of bits per sample. Default (max): 8");
+       PrintAndLog("       d <decim>     Sets decimation. A value of N saves only 1 in N samples. Default: 1");
+       PrintAndLog("       a [0|1]       Averaging - if set, will average the stored sample value when decimating. Default: 1");
+       PrintAndLog("       t <threshold> Sets trigger threshold. 0 means no threshold (range: 0-128)");
+       PrintAndLog("Examples:");
+       PrintAndLog("      lf config b 8 L");
+       PrintAndLog("                    Samples at 125KHz, 8bps.");
+       PrintAndLog("      lf config H b 4 d 3");
+       PrintAndLog("                    Samples at 134KHz, averages three samples into one, stored with ");
+       PrintAndLog("                    a resolution of 4 bits per sample.");
+       PrintAndLog("      lf read");
+       PrintAndLog("                    Performs a read (active field)");
+       PrintAndLog("      lf snoop");
+       PrintAndLog("                    Performs a snoop (no active field)");
+       return 0;

 }
 
 }
 

-int CmdIndalaClone(const char *Cmd)
+int CmdLFSetConfig(const char *Cmd)

 {
 {

-  UsbCommand c;
-       unsigned int uid1, uid2, uid3, uid4, uid5, uid6, uid7;
-
-       uid1 =  uid2 = uid3 = uid4 = uid5 = uid6 = uid7 = 0;
-  int n = 0, i = 0;
-
-  if (strchr(Cmd,'l') != 0) {
-    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-      uid1 = (uid1 << 4) | (uid2 >> 28);
-      uid2 = (uid2 << 4) | (uid3 >> 28);
-      uid3 = (uid3 << 4) | (uid4 >> 28);
-      uid4 = (uid4 << 4) | (uid5 >> 28);
-      uid5 = (uid5 << 4) | (uid6 >> 28);
-      uid6 = (uid6 << 4) | (uid7 >> 28);
-       uid7 = (uid7 << 4) | (n & 0xf);
-    }
-    PrintAndLog("Cloning 224bit tag with UID %x%08x%08x%08x%08x%08x%08x", uid1, uid2, uid3, uid4, uid5, uid6, uid7);
-    c.cmd = CMD_INDALA_CLONE_TAG_L;
-    c.d.asDwords[0] = uid1;
-    c.d.asDwords[1] = uid2;
-    c.d.asDwords[2] = uid3;
-    c.d.asDwords[3] = uid4;
-    c.d.asDwords[4] = uid5;
-    c.d.asDwords[5] = uid6;
-    c.d.asDwords[6] = uid7;
+
+       uint8_t divisor =  0;//Frequency divisor
+       uint8_t bps = 0; // Bits per sample
+       uint8_t decimation = 0; //How many to keep
+       bool averaging = 1; // Defaults to true
+       bool errors = false;
+       int trigger_threshold =-1;//Means no change
+       uint8_t unsigned_trigg = 0;
+
+       uint8_t cmdp =0;
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+               case 'h':
+                       return usage_lf_config();
+               case 'H':
+                       divisor = 88;
+                       cmdp++;
+                       break;
+               case 'L':
+                       divisor = 95;
+                       cmdp++;
+                       break;
+               case 'q':
+                       errors |= param_getdec(Cmd,cmdp+1,&divisor);
+                       cmdp+=2;
+                       break;
+               case 't':
+                       errors |= param_getdec(Cmd,cmdp+1,&unsigned_trigg);
+                       cmdp+=2;
+                       if(!errors) {
+                               trigger_threshold = unsigned_trigg;
+                               if (trigger_threshold > 0) g_lf_threshold_set = true;
+                       }
+                       break;
+               case 'b':
+                       errors |= param_getdec(Cmd,cmdp+1,&bps);
+                       cmdp+=2;
+                       break;
+               case 'd':
+                       errors |= param_getdec(Cmd,cmdp+1,&decimation);
+                       cmdp+=2;
+                       break;
+               case 'a':
+                       averaging = param_getchar(Cmd,cmdp+1) == '1';
+                       cmdp+=2;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                       errors = 1;
+                       break;
+               }
+               if(errors) break;
+       }
+       if(cmdp == 0)
+       {
+               errors = 1;// No args
+       }
+
+       //Validations
+       if(errors)
+       {
+               return usage_lf_config();
+       }
+       //Bps is limited to 8, so fits in lower half of arg1
+       if(bps >> 4) bps = 8;
+
+       sample_config config = {
+               decimation,bps,averaging,divisor,trigger_threshold
+       };
+       //Averaging is a flag on high-bit of arg[1]
+       UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG};
+       memcpy(c.d.asBytes,&config,sizeof(sample_config));
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;
+}
+
+bool lf_read(bool silent, uint32_t samples) {
+       if (offline) return false;
+       UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {silent,samples,0}};
+       clearCommandBuffer();
+       //And ship it to device
+       SendCommand(&c);
+
+       UsbCommand resp;
+       if (g_lf_threshold_set) {
+               WaitForResponse(CMD_ACK,&resp);

        } else {
        } else {

-    while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
-      uid1 = (uid1 << 4) | (uid2 >> 28);
-      uid2 = (uid2 << 4) | (n & 0xf);
-    }
-    PrintAndLog("Cloning 64bit tag with UID %x%08x", uid1, uid2);
-    c.cmd = CMD_INDALA_CLONE_TAG;
-    c.arg[0] = uid1;
-    c.arg[1] = uid2;
-  }
-
-  SendCommand(&c);
-  return 0;
+               if ( !WaitForResponseTimeout(CMD_ACK,&resp,2500) ) {
+                       PrintAndLog("command execution time out");
+                       return false;
+               }
+       }
+       // resp.arg[0] is bits read not bytes read.
+       getSamples(resp.arg[0]/8, silent);
+
+       return true;

 }
 
 int CmdLFRead(const char *Cmd)
 {
 }
 
 int CmdLFRead(const char *Cmd)
 {

-  UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K};
-
-  // 'h' means higher-low-frequency, 134 kHz
-  if(*Cmd == 'h') {
-    c.arg[0] = 1;
-  } else if (*Cmd == '\0') {
-    c.arg[0] = 0;
-  } else if (sscanf(Cmd, "%"lli, &c.arg[0]) != 1) {
-               PrintAndLog("Samples 1: 'lf read'");
-               PrintAndLog("        2: 'lf read h'");
-               PrintAndLog("        3: 'lf read <divisor>'");
-    return 0;
-  }
-  SendCommand(&c);
-  WaitForResponse(CMD_ACK,NULL);
-  return 0;
+       uint8_t cmdp = 0;
+       bool silent = false;
+       if (param_getchar(Cmd, cmdp) == 'h')
+       {
+               return usage_lf_read();
+       }
+       if (param_getchar(Cmd, cmdp) == 's') {
+               silent = true; //suppress print
+               cmdp++;
+       }
+       uint32_t samples = param_get32ex(Cmd, cmdp, 0, 10);
+       return lf_read(silent, samples);

 }
 
 }
 

-static void ChkBitstream(const char *str)
+int CmdLFSnoop(const char *Cmd)

 {
 {

-  int i;
+       uint8_t cmdp =0;
+       if(param_getchar(Cmd, cmdp) == 'h')
+       {
+               return usage_lf_snoop();
+       }

 
 

-  /* convert to bitstream if necessary */
+       UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
+       clearCommandBuffer();
+       SendCommand(&c);
+       WaitForResponse(CMD_ACK,NULL);
+       getSamples(0, true);
+
+       return 0;
+}
+
+static void ChkBitstream(const char *str)
+{
+       int i;
+ 
+       /* convert to bitstream if necessary */

        for (i = 0; i < (int)(GraphTraceLen / 2); i++){
                if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
        for (i = 0; i < (int)(GraphTraceLen / 2); i++){
                if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {

-      CmdBitstream(str);
-      break;
-    }
-  }
+                       CmdGetBitStream("");
+                       break;
+               }
+       }

 }
 }

-
+//Attempt to simulate any wave in buffer (one bit per output sample)
+// converts GraphBuffer to bitstream (based on zero crossings) if needed.

 int CmdLFSim(const char *Cmd)
 {
        int i,j;
 int CmdLFSim(const char *Cmd)
 {
        int i,j;

-  static int gap;
+       static int gap;

 
 

-  sscanf(Cmd, "%i", &gap);
+       sscanf(Cmd, "%i", &gap);

 
 

-  /* convert to bitstream if necessary */
-  ChkBitstream(Cmd);
+       // convert to bitstream if necessary
+       ChkBitstream(Cmd);

 
 

+       //can send only 512 bits at a time (1 byte sent per bit...)

        printf("Sending [%d bytes]", GraphTraceLen);
        for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
        printf("Sending [%d bytes]", GraphTraceLen);
        for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {

-    UsbCommand c={CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
+               UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};

 
                for (j = 0; j < USB_CMD_DATA_SIZE; j++) {
 
                for (j = 0; j < USB_CMD_DATA_SIZE; j++) {

-      c.d.asBytes[j] = GraphBuffer[i+j];
-    }
-    SendCommand(&c);
-    WaitForResponse(CMD_ACK,NULL);
+                       c.d.asBytes[j] = GraphBuffer[i+j];
+               }
+               SendCommand(&c);
+               WaitForResponse(CMD_ACK,NULL);

                printf(".");
                printf(".");

-  }
+       }

 
        printf("\n");
        PrintAndLog("Starting to simulate");
 
        printf("\n");
        PrintAndLog("Starting to simulate");

-  UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
-  SendCommand(&c);
-  return 0;
+       UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;

 }
 
 }
 

-int CmdLFSimBidir(const char *Cmd)
+int usage_lf_simfsk(void)

 {
 {

-  // Set ADC to twice the carrier for a slight supersampling
-  // HACK: not implemented in ARMSRC.
-  PrintAndLog("Not implemented yet.");
-  UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
-  SendCommand(&c);
-  return 0;
+       //print help
+       PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h              This help");
+       PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
+       PrintAndLog("       i              invert data");
+       PrintAndLog("       H <fcHigh>     Manually set the larger Field Clock");
+       PrintAndLog("       L <fcLow>      Manually set the smaller Field Clock");
+       //PrintAndLog("       s              TBD- -to enable a gap between playback repetitions - default: no gap");
+       PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
+       PrintAndLog("\n  NOTE: if you set one clock manually set them all manually");
+       return 0;

 }
 
 }
 

-/* simulate an LF Manchester encoded tag with specified bitstream, clock rate and inter-id gap */
-int CmdLFSimManchester(const char *Cmd)
+int usage_lf_simask(void)

 {
 {

-  static int clock, gap;
-  static char data[1024], gapstring[8];
+       //print help
+       PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h              This help");
+       PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
+       PrintAndLog("       i              invert data");
+       PrintAndLog("       b              sim ask/biphase");
+       PrintAndLog("       m              sim ask/manchester - Default");
+       PrintAndLog("       r              sim ask/raw");
+       PrintAndLog("       s              add t55xx Sequence Terminator gap - default: no gaps (only manchester)");
+       PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
+       return 0;
+}

 
 

-  sscanf(Cmd, "%i %s %i", &clock, &data[0], &gap);
+int usage_lf_simpsk(void)
+{
+       //print help
+       PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h              This help");
+       PrintAndLog("       c <clock>      Manually set clock - can autodetect if using DemodBuffer");
+       PrintAndLog("       i              invert data");
+       PrintAndLog("       1              set PSK1 (default)");
+       PrintAndLog("       2              set PSK2");
+       PrintAndLog("       3              set PSK3");
+       PrintAndLog("       r <carrier>    2|4|8 are valid carriers: default = 2");
+       PrintAndLog("       d <hexdata>    Data to sim as hex - omit to sim from DemodBuffer");
+       return 0;
+}

 
 

-  ClearGraph(0);
+// by marshmellow - sim fsk data given clock, fcHigh, fcLow, invert 
+// - allow pull data from DemodBuffer
+int CmdLFfskSim(const char *Cmd)
+{
+       //might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
+       // otherwise will need FChigh, FClow, Clock, and bitstream
+       uint8_t fcHigh=0, fcLow=0, clk=0;
+       uint8_t invert=0;
+       bool errors = false;
+       char hexData[64] = {0x00}; // store entered hex data
+       uint8_t data[255] = {0x00}; 
+       int dataLen = 0;
+       uint8_t cmdp = 0;
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+               case 'h':
+                       return usage_lf_simfsk();
+               case 'i':
+                       invert = 1;
+                       cmdp++;
+                       break;
+               case 'c':
+                       errors |= param_getdec(Cmd,cmdp+1,&clk);
+                       cmdp+=2;
+                       break;
+               case 'H':
+                       errors |= param_getdec(Cmd,cmdp+1,&fcHigh);
+                       cmdp+=2;
+                       break;
+               case 'L':
+                       errors |= param_getdec(Cmd,cmdp+1,&fcLow);
+                       cmdp+=2;
+                       break;
+               //case 's':
+               //  separator=1;
+               //  cmdp++;
+               //  break;
+               case 'd':
+                       dataLen = param_getstr(Cmd, cmdp+1, hexData, sizeof(hexData));
+                       if (dataLen==0) {
+                               errors=true; 
+                       } else {
+                               dataLen = hextobinarray((char *)data, hexData);
+                       }   
+                       if (dataLen==0) errors=true; 
+                       if (errors) PrintAndLog ("Error getting hex data");
+                       cmdp+=2;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                       errors = true;
+                       break;
+               }
+               if(errors) break;
+       }
+       if(cmdp == 0 && DemodBufferLen == 0)
+       {
+               errors = true;// No args
+       }
+
+       //Validations
+       if(errors)
+       {
+               return usage_lf_simfsk();
+       }
+       int firstClockEdge = 0;
+       if (dataLen == 0){ //using DemodBuffer 
+               if (clk==0 || fcHigh==0 || fcLow==0){ //manual settings must set them all
+                       uint8_t ans = fskClocks(&fcHigh, &fcLow, &clk, 0, &firstClockEdge);
+                       if (ans==0){
+                               if (!fcHigh) fcHigh=10;
+                               if (!fcLow) fcLow=8;
+                               if (!clk) clk=50;
+                       }
+               }
+       } else {
+               setDemodBuf(data, dataLen, 0);
+       }
+
+       //default if not found
+       if (clk == 0) clk = 50;
+       if (fcHigh == 0) fcHigh = 10;
+       if (fcLow == 0) fcLow = 8;
+
+       uint16_t arg1, arg2;
+       arg1 = fcHigh << 8 | fcLow;
+       arg2 = invert << 8 | clk;
+       size_t size = DemodBufferLen;
+       if (size > USB_CMD_DATA_SIZE) {
+               PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+               size = USB_CMD_DATA_SIZE;
+       } 
+       UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
+
+       memcpy(c.d.asBytes, DemodBuffer, size);
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;
+}
+
+// by marshmellow - sim ask data given clock, invert, manchester or raw, separator 
+// - allow pull data from DemodBuffer
+int CmdLFaskSim(const char *Cmd)
+{
+       //autodetect clock from Graphbuffer if using demod buffer
+       // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
+       uint8_t encoding = 1, separator = 0;
+       uint8_t clk=0, invert=0;
+       bool errors = false;
+       char hexData[64] = {0x00}; 
+       uint8_t data[255]= {0x00}; // store entered hex data
+       int dataLen = 0;
+       uint8_t cmdp = 0;
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+               case 'h':
+                       return usage_lf_simask();
+               case 'i':
+                       invert = 1;
+                       cmdp++;
+                       break;
+               case 'c':
+                       errors |= param_getdec(Cmd,cmdp+1,&clk);
+                       cmdp+=2;
+                       break;
+               case 'b':
+                       encoding=2; //biphase
+                       cmdp++;
+                       break;
+               case 'm':
+                       encoding=1;
+                       cmdp++;
+                       break;
+               case 'r':
+                       encoding=0;
+                       cmdp++;
+                       break;
+               case 's':
+                       separator=1;
+                       cmdp++;
+                       break;
+               case 'd':
+                       dataLen = param_getstr(Cmd, cmdp+1, hexData, sizeof(hexData));
+                       if (dataLen==0) {
+                               errors=true; 
+                       } else {
+                               dataLen = hextobinarray((char *)data, hexData);
+                       }
+                       if (dataLen==0) errors=true; 
+                       if (errors) PrintAndLog ("Error getting hex data, datalen: %d",dataLen);
+                               cmdp+=2;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                       errors = true;
+                       break;
+               }
+               if(errors) break;
+       }
+       if(cmdp == 0 && DemodBufferLen == 0)
+       {
+               errors = true;// No args
+       }

 
 

-  for (int i = 0; i < strlen(data) ; ++i)
-    AppendGraph(0, clock, data[i]- '0');
+       //Validations
+       if(errors)
+       {
+               return usage_lf_simask();
+       }
+       if (dataLen == 0){ //using DemodBuffer
+               if (clk == 0) clk = GetAskClock("0", false, false);
+       } else {
+               setDemodBuf(data, dataLen, 0);
+       }
+       if (clk == 0) clk = 64;
+       if (encoding == 0) clk = clk/2; //askraw needs to double the clock speed
+       uint16_t arg1, arg2;
+       size_t size=DemodBufferLen;
+       arg1 = clk << 8 | encoding;
+       arg2 = invert << 8 | separator;
+       if (size > USB_CMD_DATA_SIZE) {
+               PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+               size = USB_CMD_DATA_SIZE;
+       }
+       UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+       PrintAndLog("preparing to sim ask data: %d bits", size);
+       memcpy(c.d.asBytes, DemodBuffer, size);
+       clearCommandBuffer();
+       SendCommand(&c);
+       return 0;
+}

 
 

-  CmdManchesterMod("");
+// by marshmellow - sim psk data given carrier, clock, invert 
+// - allow pull data from DemodBuffer or parameters
+int CmdLFpskSim(const char *Cmd)
+{
+       //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
+       //will need carrier, Clock, and bitstream
+       uint8_t carrier=0, clk=0;
+       uint8_t invert=0;
+       bool errors = false;
+       char hexData[64] = {0x00}; // store entered hex data
+       uint8_t data[255] = {0x00}; 
+       int dataLen = 0;
+       uint8_t cmdp = 0;
+       uint8_t pskType = 1;
+       while(param_getchar(Cmd, cmdp) != 0x00)
+       {
+               switch(param_getchar(Cmd, cmdp))
+               {
+               case 'h':
+                       return usage_lf_simpsk();
+               case 'i':
+                       invert = 1;
+                       cmdp++;
+                       break;
+               case 'c':
+                       errors |= param_getdec(Cmd,cmdp+1,&clk);
+                       cmdp+=2;
+                       break;
+               case 'r':
+                       errors |= param_getdec(Cmd,cmdp+1,&carrier);
+                       cmdp+=2;
+                       break;
+               case '1':
+                       pskType=1;
+                       cmdp++;
+                       break;
+               case '2':
+                       pskType=2;
+                       cmdp++;
+                       break;
+               case '3':
+                       pskType=3;
+                       cmdp++;
+                       break;
+               case 'd':
+                       dataLen = param_getstr(Cmd, cmdp+1, hexData, sizeof(hexData));
+                       if (dataLen==0) {
+                               errors=true; 
+                       } else {
+                               dataLen = hextobinarray((char *)data, hexData);
+                       }    
+                       if (dataLen==0) errors=true; 
+                       if (errors) PrintAndLog ("Error getting hex data");
+                       cmdp+=2;
+                       break;
+               default:
+                       PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+                       errors = true;
+                       break;
+               }
+               if (errors) break;
+       }
+       if (cmdp == 0 && DemodBufferLen == 0)
+       {
+               errors = true;// No args
+       }

 
 

-  RepaintGraphWindow();
+       //Validations
+       if (errors)
+       {
+               return usage_lf_simpsk();
+       }
+       if (dataLen == 0){ //using DemodBuffer
+               PrintAndLog("Getting Clocks");
+               if (clk==0) clk = GetPskClock("", false, false);
+               PrintAndLog("clk: %d",clk);
+               if (!carrier) carrier = GetPskCarrier("", false, false); 
+               PrintAndLog("carrier: %d", carrier);
+       } else {
+               setDemodBuf(data, dataLen, 0);
+       }

 
 

-  sprintf(&gapstring[0], "%i", gap);
-  CmdLFSim(gapstring);
-  return 0;
+       if (clk <= 0) clk = 32;
+       if (carrier == 0) carrier = 2;
+       if (pskType != 1){
+               if (pskType == 2){
+                       //need to convert psk2 to psk1 data before sim
+                       psk2TOpsk1(DemodBuffer, DemodBufferLen);
+               } else {
+                       PrintAndLog("Sorry, PSK3 not yet available");
+               }
+       }
+       uint16_t arg1, arg2;
+       arg1 = clk << 8 | carrier;
+       arg2 = invert;
+       size_t size=DemodBufferLen;
+       if (size > USB_CMD_DATA_SIZE) {
+               PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+               size=USB_CMD_DATA_SIZE;
+       }
+       UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
+       PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
+       memcpy(c.d.asBytes, DemodBuffer, size);
+       clearCommandBuffer();
+       SendCommand(&c);
+       
+       return 0;

 }
 
 }
 

-int CmdLFSnoop(const char *Cmd)
+int CmdLFSimBidir(const char *Cmd)

 {
 {

-  UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
-
-  // 'h' means higher-low-frequency, 134 kHz
-  c.arg[0] = 0;
-  c.arg[1] = -1;
-
-       if (*Cmd == 'l') {
-    sscanf(Cmd, "l %"lli, &c.arg[1]);
-  } else if(*Cmd == 'h') {
-    c.arg[0] = 1;
-    sscanf(Cmd, "h %"lli, &c.arg[1]);
-  } else if (sscanf(Cmd, "%"lli" %"lli, &c.arg[0], &c.arg[1]) < 1) {
-               PrintAndLog("usage 1:  snoop");
-               PrintAndLog("      2:  snoop {l,h} [trigger threshold]");
-               PrintAndLog("      3:  snoop <divisor> [trigger threshold]");
-    return 0;
-  }
-
-  SendCommand(&c);
-  WaitForResponse(CMD_ACK,NULL);
-  return 0;
+       // Set ADC to twice the carrier for a slight supersampling
+       // HACK: not implemented in ARMSRC.
+       PrintAndLog("Not implemented yet.");
+       UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
+       SendCommand(&c);
+       return 0;

 }
 
 int CmdVchDemod(const char *Cmd)
 {
 }
 
 int CmdVchDemod(const char *Cmd)
 {

-  // Is this the entire sync pattern, or does this also include some
-  // data bits that happen to be the same everywhere? That would be
-  // lovely to know.
-  static const int SyncPattern[] = {
-    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-    1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
-    1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-  };
-
-  // So first, we correlate for the sync pattern, and mark that.
-  int bestCorrel = 0, bestPos = 0;
-  int i;
-  // It does us no good to find the sync pattern, with fewer than
-  // 2048 samples after it...
-  for (i = 0; i < (GraphTraceLen-2048); i++) {
-    int sum = 0;
-    int j;
-    for (j = 0; j < arraylen(SyncPattern); j++) {
-      sum += GraphBuffer[i+j]*SyncPattern[j];
-    }
-    if (sum > bestCorrel) {
-      bestCorrel = sum;
-      bestPos = i;
-    }
-  }
-  PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
-
-  char bits[257];
-  bits[256] = '\0';
-
-  int worst = INT_MAX;
-  int worstPos = 0;
-
-  for (i = 0; i < 2048; i += 8) {
-    int sum = 0;
-    int j;
-    for (j = 0; j < 8; j++) {
-      sum += GraphBuffer[bestPos+i+j];
-    }
-    if (sum < 0) {
-      bits[i/8] = '.';
-    } else {
-      bits[i/8] = '1';
-    }
-    if(abs(sum) < worst) {
-      worst = abs(sum);
-      worstPos = i;
-    }
-  }
-  PrintAndLog("bits:");
-  PrintAndLog("%s", bits);
-  PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
-
-  if (strcmp(Cmd, "clone")==0) {
-    GraphTraceLen = 0;
-    char *s;
-    for(s = bits; *s; s++) {
-      int j;
-      for(j = 0; j < 16; j++) {
-        GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
-      }
-    }
-    RepaintGraphWindow();
-  }
-  return 0;
+       // Is this the entire sync pattern, or does this also include some
+       // data bits that happen to be the same everywhere? That would be
+       // lovely to know.
+       static const int SyncPattern[] = {
+               1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+               1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+               1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+               1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+               1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+               1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+               1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+               1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+               1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,  1,
+               1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+       };
+
+       // So first, we correlate for the sync pattern, and mark that.
+       int bestCorrel = 0, bestPos = 0;
+       int i;
+       // It does us no good to find the sync pattern, with fewer than
+       // 2048 samples after it...
+       for (i = 0; i < (GraphTraceLen-2048); i++) {
+               int sum = 0;
+               int j;
+               for (j = 0; j < arraylen(SyncPattern); j++) {
+                       sum += GraphBuffer[i+j]*SyncPattern[j];
+               }
+               if (sum > bestCorrel) {
+                       bestCorrel = sum;
+                       bestPos = i;
+               }
+       }
+       PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
+
+       char bits[257];
+       bits[256] = '\0';
+
+       int worst = INT_MAX;
+       int worstPos = 0;
+
+       for (i = 0; i < 2048; i += 8) {
+               int sum = 0;
+               int j;
+               for (j = 0; j < 8; j++) {
+                       sum += GraphBuffer[bestPos+i+j];
+               }
+               if (sum < 0) {
+                       bits[i/8] = '.';
+               } else {
+                       bits[i/8] = '1';
+               }
+               if(abs(sum) < worst) {
+                       worst = abs(sum);
+                       worstPos = i;
+               }
+       }
+       PrintAndLog("bits:");
+       PrintAndLog("%s", bits);
+       PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
+
+       if (strcmp(Cmd, "clone")==0) {
+               GraphTraceLen = 0;
+               char *s;
+               for(s = bits; *s; s++) {
+                       int j;
+                       for(j = 0; j < 16; j++) {
+                               GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
+                       }
+               }
+               RepaintGraphWindow();
+       }
+       return 0;
+}
+
+
+//by marshmellow
+int CheckChipType(char cmdp) {
+       uint32_t wordData = 0;
+
+       if (offline || cmdp == '1') return 0;
+
+       save_restoreGB(GRAPH_SAVE);
+       save_restoreDB(GRAPH_SAVE);
+       //check for em4x05/em4x69 chips first
+       if (EM4x05Block0Test(&wordData)) {
+               PrintAndLog("\nValid EM4x05/EM4x69 Chip Found\nTry lf em 4x05... commands\n");
+               save_restoreGB(GRAPH_RESTORE);
+               save_restoreDB(GRAPH_RESTORE);
+               return 1;
+       }
+
+       //check for t55xx chip...
+       if (tryDetectP1(true)) {
+               PrintAndLog("\nValid T55xx Chip Found\nTry lf t55xx ... commands\n");
+               save_restoreGB(GRAPH_RESTORE);
+               save_restoreDB(GRAPH_RESTORE);
+               return 1;               
+       }
+       save_restoreGB(GRAPH_RESTORE);
+       save_restoreDB(GRAPH_RESTORE);
+       return 0;

 }
 
 //by marshmellow
 int CmdLFfind(const char *Cmd)
 {
 }
 
 //by marshmellow
 int CmdLFfind(const char *Cmd)
 {

-  int ans=0;
+       uint32_t wordData = 0;
+       int ans=0;
+       size_t minLength = 1000;

        char cmdp = param_getchar(Cmd, 0);
        char cmdp = param_getchar(Cmd, 0);

-       
-       if (strlen(Cmd) > 1 || cmdp == 'h' || cmdp == 'H') {
-               PrintAndLog("Usage:  lf search <0|1>");
-               PrintAndLog("     <use data from Graphbuffer>, if not set, try reading data from tag.");
+       char testRaw = param_getchar(Cmd, 1);
+       if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') {
+               PrintAndLog("Usage:  lf search <0|1> [u]");
+               PrintAndLog("     <use data from Graphbuffer> , if not set, try reading data from tag.");
+               PrintAndLog("     [Search for Unknown tags] , if not set, reads only known tags.");

                PrintAndLog("");
                PrintAndLog("");

-               PrintAndLog("    sample: lf search");
-               PrintAndLog("          : lf search 1");
+               PrintAndLog("    sample: lf search     = try reading data from tag & search for known tags");
+               PrintAndLog("          : lf search 1   = use data from GraphBuffer & search for known tags");
+               PrintAndLog("          : lf search u   = try reading data from tag & search for known and unknown tags");
+               PrintAndLog("          : lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
+

                return 0;
        }
 
                return 0;
        }
 

-       if (!offline && (cmdp != '1')){
-    ans=CmdLFRead("");
-    ans=CmdSamples("20000");
-       } else if (GraphTraceLen < 1000) {
+       if (!offline && (cmdp != '1')) {
+               lf_read(true, 30000);
+       } else if (GraphTraceLen < minLength) {

                PrintAndLog("Data in Graphbuffer was too small.");
                return 0;
                PrintAndLog("Data in Graphbuffer was too small.");
                return 0;

-  }
-
-  PrintAndLog("NOTE: some demods output possible binary\n  if it finds something that looks like a tag");
-  PrintAndLog("Checking for known tags:");
-  ans=CmdFSKdemodIO("");
-  if (ans>0) {
-    PrintAndLog("Valid IO Prox ID Found!");
-    return 1;
-  }
-  ans=CmdFSKdemodHID("");
-  if (ans>0) {
-    PrintAndLog("Valid HID Prox ID Found!");
-    return 1;
-  }
-  //add psk and indala
-  ans=CmdIndalaDecode("0");
-  if (ans>0) {
-    PrintAndLog("Valid Indala ID Found!");
-    return 1;
-  }
-  ans=Cmdaskmandemod("");
-  if (ans>0) {
-    PrintAndLog("Valid EM410x ID Found!");
-    return 1;
-  }
-  PrintAndLog("No Known Tags Found!\n");
-  return 0;
+       }
+       if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
+
+       PrintAndLog("NOTE: some demods output possible binary\n  if it finds something that looks like a tag");
+       PrintAndLog("False Positives ARE possible\n");  
+       PrintAndLog("\nChecking for known tags:\n");
+
+       size_t testLen = minLength;
+       // only run if graphbuffer is just noise as it should be for hitag/cotag
+       if (graphJustNoise(GraphBuffer, testLen)) {
+               // only run these tests if we are in online mode 
+               if (!offline && (cmdp != '1')) {
+                       // test for em4x05 in reader talk first mode.
+                       if (EM4x05Block0Test(&wordData)) {
+                               PrintAndLog("\nValid EM4x05/EM4x69 Chip Found\nUse lf em 4x05readword/dump commands to read\n");
+                               return 1;
+                       }
+                       ans=CmdLFHitagReader("26"); // 26 = RHT2F_UID_ONLY
+                       if (ans==0) {
+                               return 1;
+                       }
+                       ans=CmdCOTAGRead("");
+                       if (ans>0) {
+                               PrintAndLog("\nValid COTAG ID Found!");
+                               return 1;
+                       }
+               }
+               return 0;
+       }
+
+       // TODO test for modulation then only test formats that use that modulation
+
+       ans=CmdFSKdemodIO("");
+       if (ans>0) {
+               PrintAndLog("\nValid IO Prox ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdFSKdemodPyramid("");
+       if (ans>0) {
+               PrintAndLog("\nValid Pyramid ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdFSKdemodParadox("");
+       if (ans>0) {
+               PrintAndLog("\nValid Paradox ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdFSKdemodAWID("");
+       if (ans>0) {
+               PrintAndLog("\nValid AWID ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdFSKdemodHID("");
+       if (ans>0) {
+               PrintAndLog("\nValid HID Prox ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdAskEM410xDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid EM410x ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdVisa2kDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid Visa2000 ID Found!");
+               return CheckChipType(cmdp);             
+       }
+       
+       ans=CmdG_Prox_II_Demod("");
+       if (ans>0) {
+               PrintAndLog("\nValid G Prox II ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdFdxDemod(""); //biphase
+       if (ans>0) {
+               PrintAndLog("\nValid FDX-B ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=EM4x50Read("", false); //ask
+       if (ans>0) {
+               PrintAndLog("\nValid EM4x50 ID Found!");
+               return 1;
+       }
+
+       ans=CmdJablotronDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid Jablotron ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdNoralsyDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid Noralsy ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdSecurakeyDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid Securakey ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdVikingDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid Viking ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdIndalaDecode(""); //psk
+       if (ans>0) {
+               PrintAndLog("\nValid Indala ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdPSKNexWatch("");
+       if (ans>0) {
+               PrintAndLog("\nValid NexWatch ID Found!");
+               return CheckChipType(cmdp);
+       }
+
+       ans=CmdPacDemod("");
+       if (ans>0) {
+               PrintAndLog("\nValid PAC/Stanley ID Found!");
+               return CheckChipType(cmdp);             
+       }
+
+       PrintAndLog("\nNo Known Tags Found!\n");
+       if (testRaw=='u' || testRaw=='U') {
+               //ans=CheckChipType(cmdp);
+               //test unknown tag formats (raw mode)0
+               PrintAndLog("\nChecking for Unknown tags:\n");
+               ans=AutoCorrelate(GraphBuffer, GraphBuffer, GraphTraceLen, 4000, false, false);
+               if (ans > 0) PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
+               ans=GetFskClock("",false,false); 
+               if (ans != 0) { //fsk
+                       ans=FSKrawDemod("",true);
+                       if (ans>0) {
+                               PrintAndLog("\nUnknown FSK Modulated Tag Found!");
+                               return CheckChipType(cmdp);
+                       }
+               }
+               bool st = true;
+               ans=ASKDemod_ext("0 0 0",true,false,1,&st);
+               if (ans>0) {
+                       PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
+                       PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
+                       return CheckChipType(cmdp);
+               }
+               ans=CmdPSK1rawDemod("");
+               if (ans>0) {
+                       PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
+                       PrintAndLog("\nCould also be PSK3 - [currently not supported]");
+                       PrintAndLog("\nCould also be NRZ - try 'data rawdemod nr'");
+                       return CheckChipType(cmdp);
+               }
+               ans = CheckChipType(cmdp);
+               PrintAndLog("\nNo Data Found!\n");
+       }
+       return 0;

 }
 
 static command_t CommandTable[] = 
 {
 }
 
 static command_t CommandTable[] = 
 {

-  {"help",        CmdHelp,            1, "This help"},
-  {"cmdread",     CmdLFCommandRead,   0, "<off period> <'0' period> <'1' period> <command> ['h'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'h' for 134)"},
-  {"em4x",        CmdLFEM4X,          1, "{ EM4X RFIDs... }"},
-  {"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},
-  {"hid",         CmdLFHID,           1, "{ HID RFIDs... }"},
-  {"io",                 CmdLFIO,                1, "{ ioProx tags... }"},
-  {"indalademod", CmdIndalaDemod,     1, "['224'] -- Demodulate samples for Indala 64 bit UID (option '224' for 224 bit)"},
-  {"indalaclone", CmdIndalaClone,     0, "<UID> ['l']-- Clone Indala to T55x7 (tag must be in antenna)(UID in HEX)(option 'l' for 224 UID"},
-  {"read",        CmdLFRead,          0, "['h' or <divisor>] -- Read 125/134 kHz LF ID-only tag (option 'h' for 134, alternatively: f=12MHz/(divisor+1))"},
-  {"search",      CmdLFfind,          1, "Read and Search for valid known tag (in offline mode it you can load first then search)"},
-  {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
-  {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
-  {"simman",      CmdLFSimManchester, 0, "<Clock> <Bitstream> [GAP] Simulate arbitrary Manchester LF tag"},
-  {"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
-  {"ti",          CmdLFTI,            1, "{ TI RFIDs... }"},
-  {"hitag",       CmdLFHitag,         1, "{ Hitag tags and transponders... }"},
-  {"vchdemod",    CmdVchDemod,        1, "['clone'] -- Demodulate samples for VeriChip"},
-  {"t55xx",       CmdLFT55XX,         1, "{ T55xx RFIDs... }"},
-  {"pcf7931",     CmdLFPCF7931,       1, "{PCF7931 RFIDs...}"},
-  {NULL, NULL, 0, NULL}
+       {"help",        CmdHelp,            1, "This help"},
+       {"awid",        CmdLFAWID,          1, "{ AWID RFIDs...              }"},
+       {"cotag",       CmdLFCOTAG,         1, "{ COTAG CHIPs...             }"},
+       {"em",          CmdLFEM4X,          1, "{ EM4X CHIPs & RFIDs...      }"},
+       {"fdx",         CmdLFFdx,           1, "{ FDX-B RFIDs...             }"},
+       {"gproxii",     CmdLF_G_Prox_II,    1, "{ G Prox II RFIDs...         }"},
+       {"hid",         CmdLFHID,           1, "{ HID RFIDs...               }"},
+       {"hitag",       CmdLFHitag,         1, "{ Hitag CHIPs...             }"},
+       {"io",          CmdLFIO,            1, "{ ioProx RFIDs...            }"},
+       {"indala",      CmdLFINDALA,        1, "{ Indala RFIDs...            }"},
+       {"jablotron",   CmdLFJablotron,     1, "{ Jablotron RFIDs...         }"},
+       {"nexwatch",    CmdLFNexWatch,      1, "{ NexWatch RFIDs...          }"},
+       {"noralsy",     CmdLFNoralsy,       1, "{ Noralsy RFIDs...           }"},
+       {"pac",         CmdLFPac,           1, "{ PAC/Stanley RFIDs...       }"},
+       {"paradox",     CmdLFParadox,       1, "{ Paradox RFIDs...           }"},
+       {"presco",      CmdLFPresco,        1, "{ Presco RFIDs...            }"},
+       {"pcf7931",     CmdLFPCF7931,       1, "{ PCF7931 CHIPs...           }"},
+       {"pyramid",     CmdLFPyramid,       1, "{ Farpointe/Pyramid RFIDs... }"},
+       {"securakey",   CmdLFSecurakey,     1, "{ Securakey RFIDs...         }"},
+       {"t55xx",       CmdLFT55XX,         1, "{ T55xx CHIPs...             }"},
+       {"ti",          CmdLFTI,            1, "{ TI CHIPs...                }"},
+       {"viking",      CmdLFViking,        1, "{ Viking RFIDs...            }"},
+       {"visa2000",    CmdLFVisa2k,        1, "{ Visa2000 RFIDs...          }"},
+       {"cmdread",     CmdLFCommandRead,   0, "<d period> <z period> <o period> <c command> ['H'] -- Modulate LF reader field to send command before read (all periods in microseconds) (option 'H' for 134)"},
+       {"config",      CmdLFSetConfig,     0, "Set config for LF sampling, bit/sample, decimation, frequency"},
+       {"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},
+       {"read",        CmdLFRead,          0, "['s' silent] Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"},
+       {"search",      CmdLFfind,          1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) - 'u' to search for unknown tags"},
+       {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
+       {"simask",      CmdLFaskSim,        0, "[clock] [invert <1|0>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] -- Simulate LF ASK tag from demodbuffer or input"},
+       {"simfsk",      CmdLFfskSim,        0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] -- Simulate LF FSK tag from demodbuffer or input"},
+       {"simpsk",      CmdLFpskSim,        0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] -- Simulate LF PSK tag from demodbuffer or input"},
+       {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
+       {"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
+       {"vchdemod",    CmdVchDemod,        1, "['clone'] -- Demodulate samples for VeriChip"},
+       {NULL, NULL, 0, NULL}

 };
 
 int CmdLF(const char *Cmd)
 {
 };
 
 int CmdLF(const char *Cmd)
 {

-  CmdsParse(CommandTable, Cmd);
-  return 0; 
+       CmdsParse(CommandTable, Cmd);
+       return 0; 

 }
 
 int CmdHelp(const char *Cmd)
 {
 }
 
 int CmdHelp(const char *Cmd)
 {

-  CmdsHelp(CommandTable);
-  return 0;
+       CmdsHelp(CommandTable);
+       return 0;

 }
 }