CHG: trying to get the askdemod / biphasedeocde / finding startmarker / removeparity...

[proxmark3-svn] / client / cmdlf.c

diff --git a/client/cmdlf.c b/client/cmdlf.c
index 572cda6ca418a9babcd6bbc0b77f706eea0769e2..7c5d273ff175da047df06b0a06af48c67df4f679 100644 (file)
--- a/client/cmdlf.c
+++ b/client/cmdlf.c
@@ -19,6 +19,7 @@
 #include "cmdparser.h"
 #include "cmdmain.h"
 #include "cmddata.h"
 #include "cmdparser.h"
 #include "cmdmain.h"
 #include "cmddata.h"

+#include "util.h"

 #include "cmdlf.h"
 #include "cmdlfhid.h"
 #include "cmdlfti.h"
 #include "cmdlf.h"
 #include "cmdlfhid.h"
 #include "cmdlfti.h"


@@ -27,6 +28,7 @@
 #include "cmdlft55xx.h"
 #include "cmdlfpcf7931.h"
 #include "cmdlfio.h"
 #include "cmdlft55xx.h"
 #include "cmdlfpcf7931.h"
 #include "cmdlfio.h"

+#include "lfdemod.h"

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


@@ -355,122 +357,566 @@ int CmdIndalaClone(const char *Cmd)
   return 0;
 }
 
   return 0;
 }
 

+int usage_lf_read()
+{
+       PrintAndLog("Usage: lf read");
+       PrintAndLog("Options:        ");
+       PrintAndLog("       h            This help");
+       PrintAndLog("       s            silent run no printout");
+       PrintAndLog("This function takes no arguments. ");
+       PrintAndLog("Use 'lf config' to set parameters.");
+       return 0;
+}
+int usage_lf_snoop()
+{
+       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;
+}
+
+int usage_lf_config()
+{
+       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");
+       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 CmdLFSetConfig(const char *Cmd)
+{
+
+       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;
+                       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 >> 8) 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));
+       SendCommand(&c);
+       return 0;
+}
+

 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 arg1 = false;
+       if (param_getchar(Cmd, cmdp) == 'h')
+       {
+               return usage_lf_read();
+       }
+       if (param_getchar(Cmd, cmdp) == 's') arg1 = true; //suppress print
+       //And ship it to device
+       UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {arg1,0,0}};
+       SendCommand(&c);
+       //WaitForResponse(CMD_ACK,NULL);        
+       if ( !WaitForResponseTimeout(CMD_ACK,NULL,2500) ) {
+               PrintAndLog("command execution time out");
+               return 1;
+       }
+
+       return 0;
+}
+
+int CmdLFSnoop(const char *Cmd)
+{
+       uint8_t cmdp =0;
+       if(param_getchar(Cmd, cmdp) == 'h')
+       {
+               return usage_lf_snoop();
+       }
+
+       UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
+       SendCommand(&c);
+       WaitForResponse(CMD_ACK,NULL);
+       return 0;

 }
 
 static void ChkBitstream(const char *str)
 {
   int i;
 }
 
 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) {
   /* convert to bitstream if necessary */
        for (i = 0; i < (int)(GraphTraceLen / 2); i++){
                if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {

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

       break;
     }
   }
 }
       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 CmdLFSim(const char *Cmd)
 {

-       int i,j;
+  int i,j;

   static int gap;
 
   sscanf(Cmd, "%i", &gap);
 
   static int gap;
 
   sscanf(Cmd, "%i", &gap);
 

-  /* convert to bitstream if necessary */
+       // convert to bitstream if necessary 
+

   ChkBitstream(Cmd);
 
   ChkBitstream(Cmd);
 

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

     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}};
   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);
+  //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;
 }
 
   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              TBD- -to enable a gap between playback repetitions - default: no gap");
+  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 ask 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[32] = {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);
+      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
+  }

 
 

-  for (int i = 0; i < strlen(data) ; ++i)
-    AppendGraph(0, clock, data[i]- '0');
+  //Validations
+  if(errors)
+  {
+    return usage_lf_simfsk();
+  }

 
 

-  CmdManchesterMod("");
+  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);
+      if (ans==0){
+        if (!fcHigh) fcHigh=10;
+        if (!fcLow) fcLow=8;
+        if (!clk) clk=50;
+      }
+    }
+  } else {
+    setDemodBuf(data, dataLen, 0);
+  }

 
 

-  RepaintGraphWindow();
+       //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);
+  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[32] = {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);
+      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
+  }

 
 

-  sprintf(&gapstring[0], "%i", gap);
-  CmdLFSim(gapstring);
+  //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);
+  SendCommand(&c);

   return 0;
 }
 
   return 0;
 }
 

-int CmdLFSnoop(const char *Cmd)
+// by marshmellow - sim psk data given carrier, clock, invert 
+// - allow pull data from DemodBuffer or parameters
+int CmdLFpskSim(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;
+  //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[32] = {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);
+      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_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);
+  }
+
+  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);
+  SendCommand(&c);
+  
+  return 0;
+}
+
+int CmdLFSimBidir(const char *Cmd)
+{
+  // 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);
   SendCommand(&c);

-  WaitForResponse(CMD_ACK,NULL);

   return 0;
 }
 
   return 0;
 }
 


@@ -554,62 +1000,179 @@ int CmdVchDemod(const char *Cmd)
 int CmdLFfind(const char *Cmd)
 {
   int ans=0;
 int CmdLFfind(const char *Cmd)
 {
   int ans=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.");
-               PrintAndLog("");
-               PrintAndLog("    sample: lf search");
-               PrintAndLog("          : lf search 1");
-               return 0;
-       }
+  char cmdp = param_getchar(Cmd, 0);
+  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("    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;
+  }

 
 

-       if (!offline || (cmdp != '1') ){
-    ans=CmdLFRead("");
-       ans=CmdSamples("20000");
-       } else if (GraphTraceLen < 1000) {
-               PrintAndLog("Data in Graphbuffer was too small.");
-               return 0;
+  if (!offline && (cmdp != '1')){
+               CmdLFRead("s");
+               getSamples("30000",false);
+  } else if (GraphTraceLen < 1000) {
+    PrintAndLog("Data in Graphbuffer was too small.");
+    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");

 
 

-  PrintAndLog("Checking for known tags:");
-  ans=Cmdaskmandemod("");
-  if (ans>0) return 1;
-  ans=CmdFSKdemodHID("");
-  if (ans>0) return 1;

   ans=CmdFSKdemodIO("");
   ans=CmdFSKdemodIO("");

-  if (ans>0) return 1;
+  
+  if (ans>0) {
+    PrintAndLog("\nValid IO Prox ID Found!");
+    return 1;
+  }
+
+  ans=CmdFSKdemodPyramid("");
+  if (ans>0) {
+    PrintAndLog("\nValid Pyramid ID Found!");
+    return 1;
+  }
+
+  ans=CmdFSKdemodParadox("");
+  if (ans>0) {
+    PrintAndLog("\nValid Paradox ID Found!");
+    return 1;
+  }
+
+  ans=CmdFSKdemodAWID("");
+  if (ans>0) {
+    PrintAndLog("\nValid AWID ID Found!");
+    return 1;
+  }
+
+  ans=CmdFSKdemodHID("");
+  if (ans>0) {
+    PrintAndLog("\nValid HID Prox ID Found!");
+    return 1;
+  }
+

   //add psk and indala
   //add psk and indala

-  ans=CmdIndalaDemod("");
-  if (ans>0) return 1;
-  ans=CmdIndalaDemod("224");
-  if (ans>0) return 1;
-  PrintAndLog("No Known Tags Found!\n");
+  ans=CmdIndalaDecode("");
+  if (ans>0) {
+    PrintAndLog("\nValid Indala ID Found!");
+    return 1;
+  }
+
+  ans=CmdAskEM410xDemod("");
+  if (ans>0) {
+    PrintAndLog("\nValid EM410x ID Found!");
+    return 1;
+  }
+
+  ans=CmdG_Prox_II_Demod("");
+  if (ans>0) {
+    PrintAndLog("\nValid G Prox II ID Found!");
+    return 1;
+  }
+
+       ans=EM4x50Read("", false);
+       if (ans>0) {
+               PrintAndLog("\nValid EM4x50 ID Found!");
+               return 1;
+       }       
+
+       ans=CmdPSKNexWatch("");
+       if (ans>0) {
+               PrintAndLog("\nValid NexWatch ID Found!");
+               return 1;
+       }
+
+  PrintAndLog("\nNo Known Tags Found!\n");
+  if (testRaw=='u' || testRaw=='U'){
+    //test unknown tag formats (raw mode)
+    PrintAndLog("\nChecking for Unknown tags:\n");
+    ans=AutoCorrelate(4000, FALSE, FALSE);
+       
+    if (ans > 0) {
+
+               PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
+
+               if ( ans % 8 == 0)  {
+                       int bytes = (ans / 8);
+                       PrintAndLog("Possible %d bytes", bytes);
+                       int blocks = 0;
+                       if ( bytes % 2 == 0) {
+                               blocks = (bytes / 2);   
+                               PrintAndLog("Possible  2 blocks, width %d", blocks);
+                       }
+                       if ( bytes % 4 == 0) {
+                               blocks = (bytes / 4);   
+                               PrintAndLog("Possible  4 blocks, width %d", blocks);
+                       }
+                       if ( bytes % 8 == 0) {
+                               blocks = (bytes / 8);   
+                               PrintAndLog("Possible  8 blocks, width %d", blocks);
+                       }
+                       if ( bytes % 16 == 0) {
+                               blocks = (bytes / 16);  
+                               PrintAndLog("Possible 16 blocks, width %d", blocks);
+                       }
+               }
+       }
+               ans=GetFskClock("",FALSE,FALSE); 
+    if (ans != 0){ //fsk
+                       ans=FSKrawDemod("",TRUE);
+      if (ans>0) {
+        PrintAndLog("\nUnknown FSK Modulated Tag Found!");
+        return 1;
+      }
+    }
+               ans=ASKDemod("0 0 0",TRUE,FALSE,1);
+    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 1;
+    }
+    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 nrzrawdemod");
+      return 1;
+    }
+    PrintAndLog("\nNo Data Found!\n");
+  }

   return 0;
 }
 
 static command_t CommandTable[] = 
 {
   {"help",        CmdHelp,            1, "This help"},
   return 0;
 }
 
 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... }"},
   {"em4x",        CmdLFEM4X,          1, "{ EM4X RFIDs... }"},

-  {"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},

   {"hid",         CmdLFHID,           1, "{ HID RFIDs... }"},
   {"hid",         CmdLFHID,           1, "{ HID RFIDs... }"},

-  {"io",                 CmdLFIO,                1, "{ ioProx tags... }"},
+  {"hitag",       CmdLFHitag,         1, "{ HITAG RFIDs... }"},
+  {"io",                 CmdLFIO,                1, "{ IOPROX RFIDs... }"},
+  {"pcf7931",     CmdLFPCF7931,       1, "{ PCF7931 RFIDs... }"},
+  {"ti",          CmdLFTI,            1, "{ TI RFIDs... }"},
+  {"t55xx",       CmdLFT55XX,         1, "{ T55X7 RFIDs... }"},
+
+  {"config",      CmdLFSetConfig,     0, "Set config for LF sampling, bit/sample, decimation, frequency"},
+ 
+  {"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)"},
+  {"flexdemod",   CmdFlexdemod,       1, "Demodulate samples for FlexPass"},

   {"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"},
   {"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)"},
+  {"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) \n\t\t- 'u' to search for unknown tags"},

   {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
   {"sim",         CmdLFSim,           0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},

+  {"simask",      CmdLFaskSim,        0, "[clock] [invert <1|0>] [manchester/raw <'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
+  {"simfsk",      CmdLFfskSim,        0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
+  {"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"},

   {"simbidir",    CmdLFSimBidir,      0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
   {"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... }"},
+  {"snoop",       CmdLFSnoop,         0, "['l'|'h'|<divisor>] [trigger threshold] -- Snoop LF (l:125khz, h:134khz)"},

   {"vchdemod",    CmdVchDemod,        1, "['clone'] -- Demodulate samples for VeriChip"},
   {"vchdemod",    CmdVchDemod,        1, "['clone'] -- Demodulate samples for VeriChip"},

-  {"t55xx",       CmdLFT55XX,         1, "{ T55xx RFIDs... }"},
-  {"pcf7931",     CmdLFPCF7931,       1, "{PCF7931 RFIDs...}"},

   {NULL, NULL, 0, NULL}
 };
 
   {NULL, NULL, 0, NULL}
 };