From: marshmellow42 Date: Wed, 24 Dec 2014 16:48:41 +0000 (-0500) Subject: Created new detectclock function + EM decode addons X-Git-Tag: v2.0.0-rc1~75^2~12 X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/0e74c023bd73e4516652f1656794a2edc2b12abc?hp=cd48c19c31c2d544f08425c06c718576b2ab2805 Created new detectclock function + EM decode addons new detectclock is somewhat more reliable for ASK modulated tags. added this detect to askrawdemod if no clock in passed as an argument. also added more EM ID formats to output --- diff --git a/client/cmddata.c b/client/cmddata.c index 2b548816..e56c4e03 100644 --- a/client/cmddata.c +++ b/client/cmddata.c @@ -11,6 +11,8 @@ #include #include #include +#include + #include #include "proxmark3.h" #include "data.h" @@ -183,7 +185,7 @@ int Em410xDecode(const char *Cmd) // otherwise could be a void with no arguments //set defaults int high=0, low=0; - uint32_t hi=0, lo=0; + uint64_t lo=0; //hi=0, uint32_t i = 0; uint32_t initLoopMax = 1000; @@ -219,8 +221,8 @@ restart: if (parityTest== ((parityTest>>1)<<1)){ parityTest=0; for (ii=0; ii<4;++ii){ - hi = (hi<<1)|(lo>>31); - lo=(lo<<1)|(GraphBuffer[(i*5)+ii+idx]); + //hi = (hi<<1)|(lo>>31); + lo=(lo<<1LL)|(GraphBuffer[(i*5)+ii+idx]); } //PrintAndLog("DEBUG: EM parity passed parity val: %d, i:%d, ii:%d,idx:%d, Buffer: %d%d%d%d%d,lo: %d",parityTest,i,ii,idx,GraphBuffer[idx+ii+(i*5)-5],GraphBuffer[idx+ii+(i*5)-4],GraphBuffer[idx+ii+(i*5)-3],GraphBuffer[idx+ii+(i*5)-2],GraphBuffer[idx+ii+(i*5)-1],lo); }else {//parity failed @@ -234,24 +236,27 @@ restart: } //skip last 5 bit parity test for simplicity. - //output em id - PrintAndLog("EM TAG ID : %02x%08x", hi, lo); //get Unique ID - uint32_t iii=1; - uint32_t id2hi=0,id2lo=0; - for (i=0;i<8;i++){ - id2hi=(id2hi<<1)|((hi & (iii<<(i)))>>i); - } - for (ii=4; ii>0;ii--){ + uint64_t iii=1; + uint64_t id2lo=0; //id2hi=0, + //for (i=0;i<8;i++){ //for uint32 instead of uint64 + // id2hi=(id2hi<<1)|((hi & (iii<<(i)))>>i); + //} + for (ii=5; ii>0;ii--){ for (i=0;i<8;i++){ - id2lo=(id2lo<<1)|((lo & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8))); + id2lo=(id2lo<<1LL)|((lo & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8))); } } - PrintAndLog("Unique TAG ID: %02x%08x", id2hi, id2lo); - PrintAndLog("DEZ 8 : %08d",lo & 0xFFFFFF); - PrintAndLog("DEZ 10 : %010d",lo & 0xFFFFFF); - PrintAndLog("DEZ 5.5 : %05d.%05d",(lo>>16) & 0xFFFF,lo & 0xFFFF); - PrintAndLog("DEZ 3.5A : %03d.%05d",hi,lo &0xFFFF); + //output em id + PrintAndLog("EM TAG ID : %010llx", lo); + PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi, + PrintAndLog("DEZ 8 : %08lld",lo & 0xFFFFFF); + PrintAndLog("DEZ 10 : %010lld",lo & 0xFFFFFF); + PrintAndLog("DEZ 5.5 : %05lld.%05lld",(lo>>16LL) & 0xFFFF,(lo & 0xFFFF)); + PrintAndLog("DEZ 3.5A : %03lld.%05lld",(lo>>32ll),(lo & 0xFFFF)); + PrintAndLog("DEZ 14/IK2 : %014lld",lo); + PrintAndLog("DEZ 15/IK3 : %015lld",id2lo); + PrintAndLog("Other : %05lld_%03lld_%08lld",(lo&0xFFFF),((lo>>16LL) & 0xFF),(lo & 0xFFFFFF)); return 0; }else{ idx++; @@ -269,13 +274,12 @@ int Cmdaskrawdemod(const char *Cmd) uint32_t i; int invert=0; //invert default int high = 0, low = 0; - int clk=64; //clock default + int clk=DetectClock(0); //clock default uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0}; - sscanf(Cmd, "%i %i", &clk, &invert); - if (!(clk>8)){ - PrintAndLog("Invalid argument: %s",Cmd); - return 0; - } + + sscanf(Cmd, "%i %i", &clk, &invert); + if (clk<8) clk =64; + if (clk<32) clk=32; if (invert != 0 && invert != 1) { PrintAndLog("Invalid argument: %s", Cmd); return 0; @@ -355,7 +359,7 @@ int Cmdaskrawdemod(const char *Cmd) if ((bitnum > (64+errCnt)) && (errCnt<(GraphTraceLen/1000))) { //possible good read if (errCnt==0) break; //great read - finish - if (bestStart = iii) break; //if current run == bestErrCnt run (after exhausted testing) then finish + if (bestStart == iii) break; //if current run == bestErrCnt run (after exhausted testing) then finish if (errCnt peak) peak = GraphBuffer[i]; + // peak=(int)(peak*.75); for (i = 1; i < GraphTraceLen; ++i) { - /* If this is the beginning of a peak */ - if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] == peak) + // If this is the beginning of a peak + if (GraphBuffer[i - 1] != GraphBuffer[i] && GraphBuffer[i] >= peak) { - /* Find lowest difference between peaks */ + // Find lowest difference between peaks if (lastpeak && i - lastpeak < clock) clock = i - lastpeak; lastpeak = i; @@ -72,12 +75,84 @@ int DetectClock(int peak) return clock; } +*/ + +// by marshmellow +// not perfect especially with lower clocks or VERY good antennas (heavy wave clipping) +// maybe somehow adjust peak trimming value based on samples to fix? +int DetectClock(int peak) +{ + int i=0; + int low=0; + int clk[]={16,32,40,50,64,100,128,256}; + if (!peak){ + for (i=0;ipeak){ + peak = GraphBuffer[i]; + } + if(GraphBuffer[i]=peak) || (GraphBuffer[ii]<=low)){ + //numbits=0; + //good=1; + errCnt[clkCnt]=0; + for (i=0; i<((int)(GraphTraceLen/clk[clkCnt])-1); ++i){ + if (GraphBuffer[ii+(i*clk[clkCnt])]>=peak || GraphBuffer[ii+(i*clk[clkCnt])]<=low){ + //numbits++; + }else if(GraphBuffer[ii+(i*clk[clkCnt])-tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])-tol]<=low){ + }else if(GraphBuffer[ii+(i*clk[clkCnt])+tol]>=peak || GraphBuffer[ii+(i*clk[clkCnt])+tol]<=low){ + }else{ //error no peak detected + //numbits=0; + //good=0; + errCnt[clkCnt]++; + //break; + } + } + if(errCnt[clkCnt]==0) return clk[clkCnt]; + if(errCnt[clkCnt]