HitagS Improvements (#721)

[proxmark3-svn] / client / graph.c

diff --git a/client/graph.c b/client/graph.c
index 190dfe8f731dc9fbcd1a299261312e02c409b569..3ea47d2d4267ca30b7cdb5a7645ee350a994808c 100644 (file)
--- a/client/graph.c
+++ b/client/graph.c
@@ -14,10 +14,13 @@
 #include "ui.h"
 #include "graph.h"
 #include "lfdemod.h"
+#include "cmddata.h" //for g_debugmode
 
 int GraphBuffer[MAX_GRAPH_TRACE_LEN];
 int GraphTraceLen;
 
+int s_Buff[MAX_GRAPH_TRACE_LEN];
+
 /* write a manchester bit to the graph */
 void AppendGraph(int redraw, int clock, int bit)
 {
@@ -46,6 +49,27 @@ int ClearGraph(int redraw)
 
   return gtl;
 }
+// option '1' to save GraphBuffer any other to restore
+void save_restoreGB(uint8_t saveOpt)
+{
+       static int SavedGB[MAX_GRAPH_TRACE_LEN];
+       static int SavedGBlen=0;
+       static bool GB_Saved = false;
+       static int SavedGridOffsetAdj=0;
+
+       if (saveOpt == GRAPH_SAVE) { //save
+               memcpy(SavedGB, GraphBuffer, sizeof(GraphBuffer));
+               SavedGBlen = GraphTraceLen;
+               GB_Saved=true;
+               SavedGridOffsetAdj = GridOffset;
+       } else if (GB_Saved) { //restore
+               memcpy(GraphBuffer, SavedGB, sizeof(GraphBuffer));
+               GraphTraceLen = SavedGBlen;
+               GridOffset = SavedGridOffsetAdj;
+               RepaintGraphWindow();
+       }
+       return;
+}
 
 // DETECT CLOCK NOW IN LFDEMOD.C
 
@@ -126,10 +150,17 @@ int GetAskClock(const char str[], bool printAns, bool verbose)
                        PrintAndLog("Failed to copy from graphbuffer");
                return -1;
        }
-       DetectASKClock(grph, size, &clock, 20);
+       //, size_t *ststart, size_t *stend
+       size_t ststart = 0, stend = 0;
+       bool st = DetectST(grph, &size, &clock, &ststart, &stend);
+       int start = stend;
+       if (st == false) {
+               start = DetectASKClock(grph, size, &clock, 20);
+       }
+       setClockGrid(clock, start);
        // Only print this message if we're not looping something
-       if (printAns){
-               PrintAndLog("Auto-detected clock rate: %d", clock);
+       if (printAns || g_debugMode) {
+               PrintAndLog("Auto-detected clock rate: %d, Best Starting Position: %d", clock, start);
        }
        return clock;
 }
@@ -144,11 +175,12 @@ uint8_t GetPskCarrier(const char str[], bool printAns, bool verbose)
                        PrintAndLog("Failed to copy from graphbuffer");
                return 0;
        }
-       //uint8_t countPSK_FC(uint8_t *BitStream, size_t size)
-
-       carrier = countPSK_FC(grph,size);
+       uint16_t fc = countFC(grph,size,0);
+       carrier = fc & 0xFF;
+       if (carrier != 2 && carrier != 4 && carrier != 8) return 0;
+       if ((fc>>8) == 10 && carrier == 8) return 0;
        // Only print this message if we're not looping something
-       if (printAns){
+       if (printAns) {
                PrintAndLog("Auto-detected PSK carrier rate: %d", carrier);
        }
        return carrier;
@@ -171,7 +203,10 @@ int GetPskClock(const char str[], bool printAns, bool verbose)
                        PrintAndLog("Failed to copy from graphbuffer");
                return -1;
        }
-       clock = DetectPSKClock(grph,size,0);
+       size_t firstPhaseShiftLoc = 0;
+       uint8_t curPhase = 0, fc = 0;
+       clock = DetectPSKClock(grph, size, 0, &firstPhaseShiftLoc, &curPhase, &fc);
+       setClockGrid(clock, firstPhaseShiftLoc);
        // Only print this message if we're not looping something
        if (printAns){
                PrintAndLog("Auto-detected clock rate: %d", clock);
@@ -196,7 +231,9 @@ uint8_t GetNrzClock(const char str[], bool printAns, bool verbose)
                        PrintAndLog("Failed to copy from graphbuffer");
                return -1;
        }
-       clock = DetectNRZClock(grph, size, 0);
+       size_t clkStartIdx = 0;
+       clock = DetectNRZClock(grph, size, 0, &clkStartIdx);
+       setClockGrid(clock, clkStartIdx);
        // Only print this message if we're not looping something
        if (printAns){
                PrintAndLog("Auto-detected clock rate: %d", clock);
@@ -215,10 +252,12 @@ uint8_t GetFskClock(const char str[], bool printAns, bool verbose)
 
 
        uint8_t fc1=0, fc2=0, rf1=0;
-       uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose);
+       int firstClockEdge = 0;
+       uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose, &firstClockEdge);
        if (ans == 0) return 0;
        if ((fc1==10 && fc2==8) || (fc1==8 && fc2==5)){
                if (printAns) PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1);
+               setClockGrid(rf1, firstClockEdge);
                return rf1;
        }
        if (verbose){
@@ -227,24 +266,33 @@ uint8_t GetFskClock(const char str[], bool printAns, bool verbose)
        }
        return 0;
 }
-uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose)
+uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose, int *firstClockEdge)
 {
        uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
        size_t size = getFromGraphBuf(BitStream);
        if (size==0) return 0;
-       uint8_t dummy = 0;
-       uint16_t ans = countFC(BitStream, size, &dummy); 
+       uint16_t ans = countFC(BitStream, size, 1); 
        if (ans==0) {
-               if (verbose) PrintAndLog("DEBUG: No data found");
+               if (verbose || g_debugMode) PrintAndLog("DEBUG: No data found");
                return 0;
        }
        *fc1 = (ans >> 8) & 0xFF;
        *fc2 = ans & 0xFF;
-
-       *rf1 = detectFSKClk(BitStream, size, *fc1, *fc2);
+       //int firstClockEdge = 0;
+       *rf1 = detectFSKClk(BitStream, size, *fc1, *fc2, firstClockEdge);
        if (*rf1==0) {
-               if (verbose) PrintAndLog("DEBUG: Clock detect error");
+               if (verbose || g_debugMode) PrintAndLog("DEBUG: Clock detect error");
                return 0;
        }
        return 1;
 }
+bool graphJustNoise(int *BitStream, int size)
+{
+       static const uint8_t THRESHOLD = 15; //might not be high enough for noisy environments
+       //test samples are not just noise
+       bool justNoise1 = 1;
+       for(int idx=0; idx < size && justNoise1 ;idx++){
+               justNoise1 = BitStream[idx] < THRESHOLD;
+       }
+       return justNoise1;
+}