return Correlation;
}
+int usage_data_autocorr(void)
+{
+ //print help
+ PrintAndLog("Usage: data autocorr [window] [g]");
+ PrintAndLog("Options: ");
+ PrintAndLog(" h This help");
+ PrintAndLog(" [window] window length for correlation - default = 4000");
+ PrintAndLog(" g save back to GraphBuffer (overwrite)");
+ return 0;
+}
+
int CmdAutoCorr(const char *Cmd)
{
- int window = atoi(Cmd);
+ char cmdp = param_getchar(Cmd, 0);
+ if (cmdp == 'h' || cmdp == 'H')
+ return usage_data_autocorr();
+ int window = 4000; //set default
+ char grph=0;
+ bool updateGrph = FALSE;
+ sscanf(Cmd, "%i %c", &window, &grph);
- if (window == 0) {
- PrintAndLog("needs a window");
- return 0;
- }
if (window >= GraphTraceLen) {
PrintAndLog("window must be smaller than trace (%d samples)",
GraphTraceLen);
return 0;
}
- return AutoCorrelate(window, TRUE, TRUE);
+ if (grph == 'g') updateGrph=TRUE;
+ return AutoCorrelate(window, updateGrph, TRUE);
}
int CmdBitsamples(const char *Cmd)
csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
}
//check checksum calc
- int checkCS = CRC8Maxim(csBuff,13);
+ //checksum calc thanks to ICEMAN!!
+ uint32_t checkCS = CRC8Maxim(csBuff,13);
//get raw ID before removing parities
uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
}
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 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);
- 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);
- 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);
- return errCnt;
+ return 1;
}
// Indala 26 bit decode
ans = PSKDemod("32", 0);
}
- if (ans < 0){
+ if (!ans){
if (g_debugMode==1)
PrintAndLog("Error1: %d",ans);
return 0;
// 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]");
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
- if (errCnt<0){
- if (g_debugMode) PrintAndLog("Error demoding: %d",errCnt);
+ if (!ans){
+ if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
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();
// 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]");
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);
- 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;
}
{"askgproxiidemod",CmdG_Prox_II_Demod,1, "Demodulate a G Prox II tag from GraphBuffer"},
//{"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0|1>] [maxErr] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional)"},
//{"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output bin (args optional)"},
- {"autocorr", CmdAutoCorr, 1, "<window length> -- Autocorrelation over window"},
+ {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
{"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
{"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
//{"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"},
projects / proxmark3-svn / blobdiff