#include "ui.h"
#include "graph.h"
#include "lfdemod.h"
+#include "cmddata.h" //for g_debugmode
int GraphBuffer[MAX_GRAPH_TRACE_LEN];
int GraphTraceLen;
-
-/* write a bit to the graph */
+/* write a manchester bit to the graph */
void AppendGraph(int redraw, int clock, int bit)
{
int i;
-
+ //set first half the clock bit (all 1's or 0's for a 0 or 1 bit)
for (i = 0; i < (int)(clock / 2); ++i)
- GraphBuffer[GraphTraceLen++] = bit ^ 1;
-
+ GraphBuffer[GraphTraceLen++] = bit ;
+ //set second half of the clock bit (all 0's or 1's for a 0 or 1 bit)
for (i = (int)(clock / 2); i < clock; ++i)
- GraphBuffer[GraphTraceLen++] = bit;
+ GraphBuffer[GraphTraceLen++] = bit ^ 1;
if (redraw)
RepaintGraphWindow();
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;
+ static bool GB_Saved = false;
+
+ if (saveOpt==1) { //save
+ memcpy(SavedGB, GraphBuffer, sizeof(GraphBuffer));
+ SavedGBlen = GraphTraceLen;
+ GB_Saved=true;
+ } else if (GB_Saved){ //restore
+ memcpy(GraphBuffer, SavedGB, sizeof(GraphBuffer));
+ GraphTraceLen = SavedGBlen;
+ RepaintGraphWindow();
+ }
+ return;
+}
// DETECT CLOCK NOW IN LFDEMOD.C
return i;
}
-
-// Get or auto-detect clock rate
-int GetClock(const char *str, int peak, int verbose)
-{
- int clock;
- sscanf(str, "%i", &clock);
- if (!strcmp(str, ""))
- clock = 0;
-
- // Auto-detect clock
- if (!clock)
- {
- uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
- size_t size = getFromGraphBuf(grph);
- if ( size == 0 ) {
- PrintAndLog("Failed to copy from graphbuffer");
- return -1;
- }
- DetectASKClock(grph,size,&clock,20);
- // Only print this message if we're not looping something
- if (!verbose){
- PrintAndLog("Auto-detected clock rate: %d", clock);
- }
- }
- return clock;
-}
-
// A simple test to see if there is any data inside Graphbuffer.
bool HasGraphData(){
}
}
-int GetPskClock(const char *str, int peak, int verbose)
+// Get or auto-detect ask clock rate
+int GetAskClock(const char str[], bool printAns, bool verbose)
{
int clock;
sscanf(str, "%i", &clock);
if (!strcmp(str, ""))
clock = 0;
+ 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");
+ return -1;
+ }
+ 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 || g_debugMode) {
+ PrintAndLog("Auto-detected clock rate: %d, Best Starting Position: %d", clock, start);
+ }
+ return clock;
+}
+
+uint8_t GetPskCarrier(const char str[], bool printAns, bool verbose)
+{
+ uint8_t carrier=0;
+ uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(grph);
+ if ( size == 0 ) {
+ if (verbose)
+ PrintAndLog("Failed to copy from graphbuffer");
+ return 0;
+ }
+ 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) {
+ PrintAndLog("Auto-detected PSK carrier rate: %d", carrier);
+ }
+ return carrier;
+}
+
+int GetPskClock(const char str[], bool printAns, bool verbose)
+{
+ int clock;
+ sscanf(str, "%i", &clock);
+ if (!strcmp(str, ""))
+ clock = 0;
+
+ if (clock!=0)
+ return clock;
// Auto-detect clock
- if (!clock)
- {
- uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
- size_t size = getFromGraphBuf(grph);
- if ( size == 0 ) {
+ uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(grph);
+ if ( size == 0 ) {
+ 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 (!verbose){
- PrintAndLog("Auto-detected clock rate: %d", clock);
- }
+ return -1;
+ }
+ size_t firstPhaseShiftLoc = 0;
+ uint8_t curPhase = 0, fc = 0;
+ clock = DetectPSKClock(grph, size, 0, &firstPhaseShiftLoc, &curPhase, &fc);
+ // Only print this message if we're not looping something
+ if (printAns){
+ PrintAndLog("Auto-detected clock rate: %d", clock);
}
return clock;
}
-int GetNrzClock(const char *str, int peak, int verbose)
+uint8_t GetNrzClock(const char str[], bool printAns, bool verbose)
{
int clock;
sscanf(str, "%i", &clock);
if (!strcmp(str, ""))
clock = 0;
+ if (clock!=0)
+ return clock;
// Auto-detect clock
- if (!clock)
- {
- uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
- size_t size = getFromGraphBuf(grph);
- if ( size == 0 ) {
+ uint8_t grph[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(grph);
+ if ( size == 0 ) {
+ if (verbose)
PrintAndLog("Failed to copy from graphbuffer");
- return -1;
- }
- clock = DetectNRZClock(grph,size,0);
- // Only print this message if we're not looping something
- if (!verbose){
- PrintAndLog("Auto-detected clock rate: %d", clock);
- }
+ return -1;
+ }
+ size_t clkStartIdx = 0;
+ clock = DetectNRZClock(grph, size, 0, &clkStartIdx);
+ // Only print this message if we're not looping something
+ if (printAns){
+ PrintAndLog("Auto-detected clock rate: %d", clock);
}
return clock;
}
+//by marshmellow
+//attempt to detect the field clock and bit clock for FSK
+uint8_t GetFskClock(const char str[], bool printAns, bool verbose)
+{
+ int clock;
+ sscanf(str, "%i", &clock);
+ if (!strcmp(str, ""))
+ clock = 0;
+ if (clock != 0) return (uint8_t)clock;
+
+
+ uint8_t fc1=0, fc2=0, rf1=0;
+ uint8_t ans = fskClocks(&fc1, &fc2, &rf1, verbose);
+ 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);
+ return rf1;
+ }
+ if (verbose){
+ PrintAndLog("DEBUG: unknown fsk field clock detected");
+ PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1);
+ }
+ return 0;
+}
+uint8_t fskClocks(uint8_t *fc1, uint8_t *fc2, uint8_t *rf1, bool verbose)
+{
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
+ if (size==0) return 0;
+ uint16_t ans = countFC(BitStream, size, 1);
+ if (ans==0) {
+ if (verbose || g_debugMode) PrintAndLog("DEBUG: No data found");
+ return 0;
+ }
+ *fc1 = (ans >> 8) & 0xFF;
+ *fc2 = ans & 0xFF;
+
+ *rf1 = detectFSKClk(BitStream, size, *fc1, *fc2);
+ if (*rf1==0) {
+ 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;
+}
projects / proxmark3-svn / blobdiff