CHG: `lf em` - added @marshmellow42 's changes

[proxmark3-svn] / client / graph.c

diff --git a/client/graph.c b/client/graph.c
index 062798482821c0873df2db766e39e8413f22dd84..4c132420b98df9f99519476c8f5c67e10e8342c8 100644 (file)
--- a/client/graph.c
+++ b/client/graph.c
@@ -143,7 +143,11 @@ int GetAskClock(const char str[], bool printAns, bool verbose)
                        PrintAndLog("Failed to copy from graphbuffer");
                return -1;
        }
-       int start = DetectASKClock(grph, size, &clock, 20);
+       bool st = DetectST(grph, &size, &clock);
+       int start = 0;
+       if (st == false) {
+               start = DetectASKClock(grph, size, &clock, 20);
+       }
        // Only print this message if we're not looping something
        if (printAns){
                PrintAndLog("Auto-detected clock rate: %d, Best Starting Position: %d", clock, start);
@@ -178,21 +182,18 @@ int GetPskClock(const char str[], bool printAns, bool verbose)
        if (!strcmp(str, "")) 
                clock = 0;
 
-       if (clock!=0) 
-               return clock;
+       if (clock!=0) return clock;
        // Auto-detect clock
        uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
        size_t size = getFromGraphBuf(grph);
        if ( size == 0 ) {
-               if (verbose) 
-                       PrintAndLog("Failed to copy from graphbuffer");
+               if (verbose) PrintAndLog("Failed to copy from graphbuffer");
                return -1;
        }
        clock = DetectPSKClock(grph,size,0);
        // Only print this message if we're not looping something
-       if (printAns){
-               PrintAndLog("Auto-detected clock rate: %d", clock);
-       }
+       if (printAns) PrintAndLog("Auto-detected clock rate: %d", clock);
+
        return clock;
 }
 
@@ -251,7 +252,7 @@ uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose)
        if (size==0) return 0;
        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;
@@ -259,8 +260,21 @@ uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose)
 
        *rf1 = detectFSKClk(BitStream, size, *fc1, *fc2);
        if (*rf1==0) {
-               if (verbose) PrintAndLog("DEBUG: Clock detect error");
+               if (verbose || g_debugMode) PrintAndLog("DEBUG: Clock detect error");
                return 0;
        }
        return 1;
 }
+
+// test samples are not just noise
+bool graphJustNoise(int *BitStream, int size)
+{
+       //might not be high enough for noisy environments
+       #define THRESHOLD 15; 
+
+       bool isNoise = TRUE;
+       for(int i=0; i < size && isNoise; i++){
+               isNoise = BitStream[i] < THRESHOLD;
+       }
+       return isNoise;
+}