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LF demod/cmd code cleanup + new lf search

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cleaned up and error proof code.  plus added new command    lf search
when online it will lf read - data samples 20000 - and test for EM410x,
HID, IO Prox, and indala cards.  when offline it will test current
graphbuffer.
This commit is contained in:
marshmellow42 2014-12-30 16:08:33 -05:00
commit d5a72d2fee
6 changed files with 192 additions and 127 deletions
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37
client/cmdlf.c
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@ -142,7 +142,7 @@ int CmdIndalaDemod(const char *Cmd)
uint8_t rawbits[4096];
int rawbit = 0;
int worst = 0, worstPos = 0;
PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
// PrintAndLog("Expecting a bit less than %d raw bits", GraphTraceLen / 32);
for (i = 0; i < GraphTraceLen-1; i += 2) {
count += 1;
if ((GraphBuffer[i] > GraphBuffer[i + 1]) && (state != 1)) {
@ -171,9 +171,10 @@ int CmdIndalaDemod(const char *Cmd)
count = 0;
}
}
PrintAndLog("Recovered %d raw bits", rawbit);
PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
if (rawbit>0){
PrintAndLog("Recovered %d raw bits, expected: %d", rawbit, GraphTraceLen/32);
PrintAndLog("worst metric (0=best..7=worst): %d at pos %d", worst, worstPos);
} else return 0;
// Finding the start of a UID
int uidlen, long_wait;
if (strcmp(Cmd, "224") == 0) {
@ -303,7 +304,7 @@ int CmdIndalaDemod(const char *Cmd)
}
RepaintGraphWindow();
return 0;
return 1;
}
int CmdIndalaClone(const char *Cmd)
@ -548,6 +549,31 @@ int CmdVchDemod(const char *Cmd)
return 0;
}
//by marshmellow
int CmdLFfind(const char *Cmd)
{
int ans=0;
if (!offline){
ans=CmdLFRead("");
ans=CmdSamples("20000");
}
if (GraphTraceLen<1000) return 0;
PrintAndLog("Checking for known tags:");
ans=Cmdaskmandemod("");
if (ans>0) return 1;
ans=CmdFSKdemodHID("");
if (ans>0) return 1;
ans=CmdFSKdemodIO("");
if (ans>0) return 1;
//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");
return 0;
}
static command_t CommandTable[] =
{
{"help", CmdHelp, 1, "This help"},
@ -559,6 +585,7 @@ static command_t CommandTable[] =
{"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)"},
{"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"},
{"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"},