adjust pskdemod

add skipped bits before first phase back in
PSKDemod now returns 1 for success or 0 for fail like other demods

diff --git a/client/cmddata.c b/client/cmddata.c
index e96fb517ce6fb85a44573e866c7894cde05bdbb5..356bfab3f715a55548c194903188ad9f866657cf 100644 (file)
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -1700,7 +1700,7 @@ int PSKDemod(const char *Cmd, bool verbose)
   }
   if (invert != 0 && invert != 1) {
     if (verbose) PrintAndLog("Invalid argument: %s", Cmd);
   }
   if (invert != 0 && invert != 1) {
     if (verbose) PrintAndLog("Invalid argument: %s", Cmd);

-    return -1;
+    return 0;

   }
   uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
   size_t BitLen = getFromGraphBuf(BitStream);
   }
   uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
   size_t BitLen = getFromGraphBuf(BitStream);


@@ -1708,22 +1708,27 @@ int PSKDemod(const char *Cmd, bool verbose)
   uint8_t carrier=countPSK_FC(BitStream, BitLen);
   if (carrier!=2 && carrier!=4 && carrier!=8){
     //invalid carrier
   uint8_t carrier=countPSK_FC(BitStream, BitLen);
   if (carrier!=2 && carrier!=4 && carrier!=8){
     //invalid carrier

-    return -1;
+    return 0;

   }
   int errCnt=0;
   errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
   if (errCnt > maxErr){
     if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
   }
   int errCnt=0;
   errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
   if (errCnt > maxErr){
     if (g_debugMode==1 && verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);

-    return -1;
+    return 0;

   } 
   if (errCnt<0|| BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
     if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
   } 
   if (errCnt<0|| BitLen<16){  //throw away static - allow 1 and -1 (in case of threshold command first)
     if (g_debugMode==1 && verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);

-    return -1;
+    return 0;
+  }
+  if (verbose){
+    PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
+    if (errCnt>0){
+      PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+    }

   }
   }

-  if (verbose) PrintAndLog("Tried PSK Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);

   //prime demod buffer for output
   setDemodBuf(BitStream,BitLen,0);
   //prime demod buffer for output
   setDemodBuf(BitStream,BitLen,0);

-  return errCnt;
+  return 1;

 }
 
 // Indala 26 bit decode
 }
 
 // Indala 26 bit decode


@@ -1738,7 +1743,7 @@ int CmdIndalaDecode(const char *Cmd)
                ans = PSKDemod("32", 0);
        }
 
                ans = PSKDemod("32", 0);
        }
 

-       if (ans < 0){
+       if (!ans){

                if (g_debugMode==1) 
                        PrintAndLog("Error1: %d",ans);
                return 0;
                if (g_debugMode==1) 
                        PrintAndLog("Error1: %d",ans);
                return 0;


@@ -1879,7 +1884,7 @@ int CmdNRZrawDemod(const char *Cmd)
 // prints binary found and saves in demodbuffer for further commands
 int CmdPSK1rawDemod(const char *Cmd)
 {
 // prints binary found and saves in demodbuffer for further commands
 int CmdPSK1rawDemod(const char *Cmd)
 {

-  int errCnt;
+  int ans;

   char cmdp = param_getchar(Cmd, 0);
   if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
     PrintAndLog("Usage:  data rawdemod p1 [clock] <0|1> [maxError]");
   char cmdp = param_getchar(Cmd, 0);
   if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
     PrintAndLog("Usage:  data rawdemod p1 [clock] <0|1> [maxError]");


@@ -1894,15 +1899,13 @@ int CmdPSK1rawDemod(const char *Cmd)
     PrintAndLog("          : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
     return 0;
   }
     PrintAndLog("          : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
     return 0;
   }

-  errCnt = PSKDemod(Cmd, TRUE);
+  ans = PSKDemod(Cmd, TRUE);

   //output
   //output

-  if (errCnt<0){
-    if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt); 
+  if (!ans){
+    if (g_debugMode) PrintAndLog("Error demoding: %d",ans); 

     return 0;
   }
     return 0;
   }

-  if (errCnt>0){
-    PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
-  }
+ 

   PrintAndLog("PSK demoded bitstream:");
   // Now output the bitstream to the scrollback by line of 16 bits
   printDemodBuff();
   PrintAndLog("PSK demoded bitstream:");
   // Now output the bitstream to the scrollback by line of 16 bits
   printDemodBuff();


@@ -1913,7 +1916,7 @@ int CmdPSK1rawDemod(const char *Cmd)
 // takes same args as cmdpsk1rawdemod
 int CmdPSK2rawDemod(const char *Cmd)
 {
 // takes same args as cmdpsk1rawdemod
 int CmdPSK2rawDemod(const char *Cmd)
 {

-  int errCnt=0;
+  int ans=0;

   char cmdp = param_getchar(Cmd, 0);
   if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
     PrintAndLog("Usage:  data rawdemod p2 [clock] <0|1> [maxError]");
   char cmdp = param_getchar(Cmd, 0);
   if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H') {
     PrintAndLog("Usage:  data rawdemod p2 [clock] <0|1> [maxError]");


@@ -1928,24 +1931,15 @@ int CmdPSK2rawDemod(const char *Cmd)
     PrintAndLog("          : data rawdemod p2 64 1 0  = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
     return 0;
   }
     PrintAndLog("          : data rawdemod p2 64 1 0  = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
     return 0;
   }

-  errCnt=PSKDemod(Cmd, TRUE);
-  if (errCnt<0){
-    if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);  
+  ans=PSKDemod(Cmd, TRUE);
+  if (!ans){
+    if (g_debugMode) PrintAndLog("Error demoding: %d",ans);  

     return 0;
   } 
   psk1TOpsk2(DemodBuffer, DemodBufferLen);
     return 0;
   } 
   psk1TOpsk2(DemodBuffer, DemodBufferLen);

-  if (errCnt>0){
-    if (g_debugMode){
-      PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
-      PrintAndLog("PSK2 demoded bitstream:");
-      // Now output the bitstream to the scrollback by line of 16 bits
-      printDemodBuff();
-    }
-  }else{
-    PrintAndLog("PSK2 demoded bitstream:");
-    // Now output the bitstream to the scrollback by line of 16 bits
-    printDemodBuff();  
-  }
+  PrintAndLog("PSK2 demoded bitstream:");
+  // Now output the bitstream to the scrollback by line of 16 bits
+  printDemodBuff();  

   return 1;
 }
 
   return 1;
 }
 

diff --git a/common/lfdemod.c b/common/lfdemod.c
index db945d0abcf968e9baa4f738ff4d5eb42baad6b4..0a81c6b8fdd1818239830beb3a67f21e2a4ae16a 100644 (file)
--- a/common/lfdemod.c
+++ b/common/lfdemod.c
@@ -1079,7 +1079,9 @@ void psk1TOpsk2(uint8_t *BitStream, size_t size)
        size_t i=1;
        uint8_t lastBit=BitStream[0];
        for (; i<size; i++){
        size_t i=1;
        uint8_t lastBit=BitStream[0];
        for (; i<size; i++){

-               if (lastBit!=BitStream[i]){
+               if (BitStream[i]==77){
+                       //ignore errors
+               } else if (lastBit!=BitStream[i]){

                        lastBit=BitStream[i];
                        BitStream[i]=1;
                } else {
                        lastBit=BitStream[i];
                        BitStream[i]=1;
                } else {


@@ -1619,10 +1621,13 @@ int pskRawDemod(uint8_t dest[], size_t *size, int *clock, int *invert)
   }
   //PrintAndLog("DEBUG: firstFullWave: %d, waveLen: %d",firstFullWave,fullWaveLen);  
   lastClkBit = firstFullWave; //set start of wave as clock align
   }
   //PrintAndLog("DEBUG: firstFullWave: %d, waveLen: %d",firstFullWave,fullWaveLen);  
   lastClkBit = firstFullWave; //set start of wave as clock align

+  //PrintAndLog("DEBUG: clk: %d, lastClkBit: %d", *clock, lastClkBit);

   waveStart = 0;
   errCnt=0;
   size_t numBits=0;
   waveStart = 0;
   errCnt=0;
   size_t numBits=0;

-  //PrintAndLog("DEBUG: clk: %d, lastClkBit: %d", *clock, lastClkBit);
+  //set skipped bits
+  memset(dest+numBits,curPhase^1,firstFullWave / *clock);
+  numBits += (firstFullWave / *clock);

   dest[numBits++] = curPhase; //set first read bit
   for (i = firstFullWave+fullWaveLen-1; i < *size-3; i++){
     //top edge of wave = start of new wave 
   dest[numBits++] = curPhase; //set first read bit
   for (i = firstFullWave+fullWaveLen-1; i < *size-3; i++){
     //top edge of wave = start of new wave