int CmdAmp(const char *Cmd)
{
- int i, rising, falling;
- int max = INT_MIN, min = INT_MAX;
-
- for (i = 10; i < GraphTraceLen; ++i) {
- if (GraphBuffer[i] > max)
- max = GraphBuffer[i];
- if (GraphBuffer[i] < min)
- min = GraphBuffer[i];
- }
-
- if (max != min) {
- rising = falling= 0;
- for (i = 0; i < GraphTraceLen; ++i) {
- if (GraphBuffer[i + 1] < GraphBuffer[i]) {
- if (rising) {
- GraphBuffer[i] = max;
- rising = 0;
- }
- falling = 1;
- }
- if (GraphBuffer[i + 1] > GraphBuffer[i]) {
- if (falling) {
- GraphBuffer[i] = min;
- falling = 0;
- }
- rising= 1;
- }
- }
- }
- RepaintGraphWindow();
- return 0;
+ int i, rising, falling;
+ int max = INT_MIN, min = INT_MAX;
+
+ DetectHighLowInGraph( &max, &min, FALSE);
+
+ if (max != min) {
+ rising = falling = 0;
+
+ for (i = 0; i < GraphTraceLen; ++i) {
+ if (GraphBuffer[i + 1] < GraphBuffer[i]) {
+ if (rising) {
+ GraphBuffer[i] = max;
+ rising = 0;
+ }
+ falling = 1;
+ }
+ if (GraphBuffer[i + 1] > GraphBuffer[i]) {
+ if (falling) {
+ GraphBuffer[i] = min;
+ falling = 0;
+ }
+ rising= 1;
+ }
+ }
+ }
+ RepaintGraphWindow();
+ return 0;
}
/*
//this method is dependant on all highs and lows to be the same(or clipped) this creates issues[marshmellow] it also ignores the clock
int Cmdaskdemod(const char *Cmd)
{
- int i;
- int c, high = 0, low = 0;
+ int i;
+ int c, high = 0, low = 0;
- sscanf(Cmd, "%i", &c);
+ sscanf(Cmd, "%i", &c);
- /* Detect high and lows and clock */
- // (AL - clock???)
- for (i = 0; i < GraphTraceLen; ++i)
- {
- if (GraphBuffer[i] > high)
- high = GraphBuffer[i];
- else if (GraphBuffer[i] < low)
- low = GraphBuffer[i];
- }
- high=abs(high*.75);
- low=abs(low*.75);
- if (c != 0 && c != 1) {
- PrintAndLog("Invalid argument: %s", Cmd);
- return 0;
- }
- //prime loop
- if (GraphBuffer[0] > 0) {
- GraphBuffer[0] = 1-c;
- } else {
- GraphBuffer[0] = c;
- }
- for (i = 1; i < GraphTraceLen; ++i) {
- /* Transitions are detected at each peak
- * Transitions are either:
- * - we're low: transition if we hit a high
- * - we're high: transition if we hit a low
- * (we need to do it this way because some tags keep high or
- * low for long periods, others just reach the peak and go
- * down)
- */
- if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) {
- GraphBuffer[i] = 1 - c;
- } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){
- GraphBuffer[i] = c;
- } else {
- /* No transition */
- GraphBuffer[i] = GraphBuffer[i - 1];
- }
- }
+ if (c != 0 && c != 1) {
+ PrintAndLog("Invalid argument: %s", Cmd);
+ return 0;
+ }
+
+ DetectHighLowInGraph( &high, &low, FALSE);
+
+ high = abs(high * .75);
+ low = abs(low * .75);
+
+ //prime loop
+ if (GraphBuffer[0] > 0) {
+ GraphBuffer[0] = 1-c;
+ } else {
+ GraphBuffer[0] = c;
+ }
+
+ for (i = 1; i < GraphTraceLen; ++i) {
+ /* Transitions are detected at each peak
+ * Transitions are either:
+ * - we're low: transition if we hit a high
+ * - we're high: transition if we hit a low
+ * (we need to do it this way because some tags keep high or
+ * low for long periods, others just reach the peak and go
+ * down)
+ */
+ if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) {
+ GraphBuffer[i] = 1 - c;
+ } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){
+ GraphBuffer[i] = c;
+ } else {
+ /* No transition */
+ GraphBuffer[i] = GraphBuffer[i - 1];
+ }
+ }
RepaintGraphWindow();
return 0;
}
-void printBitStream(uint8_t BitStream[], uint32_t bitLen){
- uint32_t i = 0;
- if (bitLen<16) {
- PrintAndLog("Too few bits found: %d",bitLen);
- return;
- }
- if (bitLen>512) bitLen=512;
- for (i = 0; i <= (bitLen-16); i+=16) {
- PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
- BitStream[i],
- BitStream[i+1],
- BitStream[i+2],
- BitStream[i+3],
- BitStream[i+4],
- BitStream[i+5],
- BitStream[i+6],
- BitStream[i+7],
- BitStream[i+8],
- BitStream[i+9],
- BitStream[i+10],
- BitStream[i+11],
- BitStream[i+12],
- BitStream[i+13],
- BitStream[i+14],
- BitStream[i+15]);
- }
+void printBitStream(uint8_t bits[], uint32_t bitLen){
+
+ uint32_t i = 0;
+ if (bitLen < 16) {
+ PrintAndLog("Too few bits found: %d",bitLen);
+ return;
+ }
+ if (bitLen > 512)
+ bitLen = 512;
+
+ if ( ( bitLen % 16 ) > 0) {
+ bitLen = ((bitLen / 16) * 16);
+ PrintAndLog("ICE: equally divided with 16 = %d",bitLen);
+ }
+
+ for (i = 0; i <= ( bitLen - 16); i += 16) {
+ PrintAndLog("%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i%i",
+ bits[i],
+ bits[i+1],
+ bits[i+2],
+ bits[i+3],
+ bits[i+4],
+ bits[i+5],
+ bits[i+6],
+ bits[i+7],
+ bits[i+8],
+ bits[i+9],
+ bits[i+10],
+ bits[i+11],
+ bits[i+12],
+ bits[i+13],
+ bits[i+14],
+ bits[i+15]);
+ }
return;
}
-void printEM410x(uint64_t id)
-{
- if (id !=0){
- uint64_t iii=1;
- uint64_t id2lo=0; //id2hi=0,
- uint32_t ii=0;
- uint32_t i=0;
- for (ii=5; ii>0;ii--){
- for (i=0;i<8;i++){
- id2lo=(id2lo<<1LL)|((id & (iii<<(i+((ii-1)*8))))>>(i+((ii-1)*8)));
- }
- }
- //output em id
- PrintAndLog("EM TAG ID : %010llx", id);
- PrintAndLog("Unique TAG ID: %010llx", id2lo); //id2hi,
- PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
- PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFF);
- PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
- PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
- PrintAndLog("DEZ 14/IK2 : %014lld",id);
- PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
- PrintAndLog("Other : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
- }
- return;
+
+void printEM410x(uint64_t id) {
+
+ if ( id <= 0 ) return;
+
+ uint64_t id2lo = 0;
+ uint32_t i,j;
+ i = j = 0;
+
+ for (j = 5; j > 0; j--){
+ for (i = 0; i < 8; i++){
+ id2lo = ( id2lo << 1LL)|((id & ( 1 << ( i +( ( j-1 ) * 8 )))) >> ( i + (( j-1) *8 )));
+ }
+ }
+ //output em id
+ PrintAndLog("EM TAG ID : %010llx", id);
+ PrintAndLog("Unique TAG ID: %010llx", id2lo);
+ PrintAndLog("DEZ 8 : %08lld", id & 0xFFFFFF);
+ PrintAndLog("DEZ 10 : %010lld", id & 0xFFFFFF);
+ PrintAndLog("DEZ 5.5 : %05lld.%05lld", (id>>16LL) & 0xFFFF, (id & 0xFFFF));
+ PrintAndLog("DEZ 3.5A : %03lld.%05lld", (id>>32ll), (id & 0xFFFF));
+ PrintAndLog("DEZ 14/IK2 : %014lld", id);
+ PrintAndLog("DEZ 15/IK3 : %015lld", id2lo);
+ PrintAndLog("Other : %05lld_%03lld_%08lld", (id & 0xFFFF), (( id >> 16LL) & 0xFF), (id & 0xFFFFFF));
}
int CmdEm410xDecode(const char *Cmd)
{
- uint64_t id=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- uint32_t i=0;
- i=getFromGraphBuf(BitStream);
- id = Em410xDecode(BitStream,i);
- printEM410x(id);
- if (id>0) return 1;
- return 0;
+ uint64_t id = 0;
+ uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00};
+ uint32_t len = GetFromGraphBuf(bits);
+ id = Em410xDecode(bits, len);
+ printEM410x(id);
+ if ( id > 0 )
+ return 1;
+ return 0;
}
//by marshmellow
//prints binary found and saves in graphbuffer for further commands
int Cmdaskmandemod(const char *Cmd)
{
- int invert=0;
- int clk=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- sscanf(Cmd, "%i %i", &clk, &invert);
- if (invert != 0 && invert != 1) {
- PrintAndLog("Invalid argument: %s", Cmd);
- return 0;
- }
- uint32_t BitLen = getFromGraphBuf(BitStream);
+ int invert = 0;
+ int clk = 0;
- int errCnt=0;
- errCnt = askmandemod(BitStream, &BitLen,&clk,&invert);
- if (errCnt<0){ //if fatal error (or -1)
- // PrintAndLog("no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
- return 0;
- }
- if (BitLen<16) return 0;
- PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,BitLen);
+ sscanf(Cmd, "%i %i", &clk, &invert);
- if (errCnt>0){
- PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
- }
- PrintAndLog("ASK/Manchester decoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printBitStream(BitStream,BitLen);
- uint64_t lo =0;
- lo = Em410xDecode(BitStream,BitLen);
- if (lo>0){
- //set GraphBuffer for clone or sim command
- setGraphBuf(BitStream,BitLen);
- PrintAndLog("EM410x pattern found: ");
- printEM410x(lo);
- }
- //if (BitLen>16) return 1;
- return 0;
+ if (invert != 0 && invert != 1) {
+ PrintAndLog("Invalid argument: %s", Cmd);
+ return 0;
+ }
+
+ uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00};
+ uint32_t len = GetFromGraphBuf(bits);
+
+ int errCnt = askmandemod(bits, &len, &clk, &invert);
+
+ if (errCnt < 0) return 0;
+ if (len < 16) return 0;
+
+ PrintAndLog("\nUsing Clock: %d - Invert: %d - Bits Found: %d",clk,invert,len);
+
+ if (errCnt > 0){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ }
+
+ PrintAndLog("ASK/Manchester decoded bitstream:");
+
+ printBitStream(bits, len);
+ uint64_t lo = Em410xDecode(bits, len);
+
+ if (lo > 0){
+ SetGraphBuf(bits,len);
+ PrintAndLog("EM410x pattern found: ");
+ printEM410x(lo);
+ return 1;
+ }
+ return 0;
}
//by marshmellow
//stricktly take 10 and 01 and convert to 0 and 1
int Cmdmandecoderaw(const char *Cmd)
{
- int i =0;
- int errCnt=0;
- int bitnum=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- int high = 0, low = 0;
- for (;i<GraphTraceLen;++i){
- if (GraphBuffer[i]>high) high=GraphBuffer[i];
- else if(GraphBuffer[i]<low) low=GraphBuffer[i];
- BitStream[i]=GraphBuffer[i];
- }
- if (high>1 || low <0 ){
- PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
- return 0;
- }
- bitnum=i;
- errCnt=manrawdecode(BitStream,&bitnum);
- if (errCnt>=20){
- PrintAndLog("Too many errors: %d",errCnt);
- return 0;
- }
- PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
- printBitStream(BitStream,bitnum);
- if (errCnt==0){
- //put back in graphbuffer
- ClearGraph(0);
- for (i=0; i < bitnum; ++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=bitnum;
- RepaintGraphWindow();
- uint64_t id = 0;
- id = Em410xDecode(BitStream,i);
- printEM410x(id);
- }
- return 1;
+ int i = 0;
+ int errCnt = 0;
+ int bitnum = 0;
+ uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00};
+ int high = 0, low = 0;
+
+ for (; i < GraphTraceLen; ++i){
+ if (GraphBuffer[i] > high) high = GraphBuffer[i];
+ else if (GraphBuffer[i] < low) low = GraphBuffer[i];
+ bits[i] = GraphBuffer[i];
+ }
+
+ if (high > 1 || low < 0 ){
+ PrintAndLog("Error: please raw demod the wave first then mancheseter raw decode");
+ return 0;
+ }
+
+ bitnum = i;
+ errCnt = manrawdecode(bits, &bitnum);
+
+ if (errCnt>=20){
+ PrintAndLog("Too many errors: %d",errCnt);
+ return 0;
+ }
+
+ PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
+ printBitStream(bits,bitnum);
+
+ if (errCnt==0){
+ //put back in graphbuffer
+ SetGraphBuf(bits, bitnum);
+
+ uint64_t id = Em410xDecode(bits,i);
+ printEM410x(id);
+ }
+ return 1;
}
//by marshmellow
// width waves vs small width waves to help the decode positioning) or askbiphdemod
int CmdBiphaseDecodeRaw(const char *Cmd)
{
- int i = 0;
- int errCnt=0;
- int bitnum=0;
- int offset=0;
- int high=0, low=0;
- sscanf(Cmd, "%i", &offset);
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- //get graphbuffer & high and low
- for (;i<GraphTraceLen;++i){
- if(GraphBuffer[i]>high)high=GraphBuffer[i];
- else if(GraphBuffer[i]<low)low=GraphBuffer[i];
- BitStream[i]=GraphBuffer[i];
- }
- if (high>1 || low <0){
- PrintAndLog("Error: please raw demod the wave first then decode");
- return 0;
-}
- bitnum=i;
- errCnt=BiphaseRawDecode(BitStream,&bitnum, offset);
- if (errCnt>=20){
- PrintAndLog("Too many errors attempting to decode: %d",errCnt);
- return 0;
- }
- PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:",offset,errCnt);
- printBitStream(BitStream,bitnum);
- PrintAndLog("\nif bitstream does not look right try offset=1");
- return 1;
+ int i = 0;
+ int errCnt = 0;
+ int bitnum = 0;
+ int offset = 0;
+ int high = 0, low = 0;
+ sscanf(Cmd, "%i", &offset);
+
+ uint8_t bits[MAX_GRAPH_TRACE_LEN]={0};
+
+ //get graphbuffer & high and low
+ for (; i<GraphTraceLen; ++i){
+ if (GraphBuffer[i] > high) high = GraphBuffer[i];
+ else if (GraphBuffer[i] < low) low = GraphBuffer[i];
+ bits[i] = GraphBuffer[i];
+ }
+ if (high > 1 || low < 0){
+ PrintAndLog("Error: please raw demod the wave first then decode");
+ return 0;
+ }
+ bitnum = i;
+ errCnt = BiphaseRawDecode(bits, &bitnum, offset);
+ if (errCnt >= 20){
+ PrintAndLog("Too many errors attempting to decode: %d", errCnt);
+ return 0;
+ }
+ PrintAndLog("Biphase Decoded using offset: %d - # errors:%d - data:", offset, errCnt);
+ printBitStream(bits, bitnum);
+ PrintAndLog("\nif bitstream does not look right try offset=1");
+ return 1;
}
//prints binary found and saves in graphbuffer for further commands
int Cmdaskrawdemod(const char *Cmd)
{
- uint32_t i;
- int invert=0;
- int clk=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- sscanf(Cmd, "%i %i", &clk, &invert);
- if (invert != 0 && invert != 1) {
- PrintAndLog("Invalid argument: %s", Cmd);
- return 0;
- }
- int BitLen = getFromGraphBuf(BitStream);
- int errCnt=0;
- errCnt = askrawdemod(BitStream, &BitLen,&clk,&invert);
- if (errCnt==-1){ //throw away static - allow 1 and -1 (in case of threshold command first)
- PrintAndLog("no data found");
- return 0;
- }
- if (BitLen<16) return 0;
- PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
- //PrintAndLog("Data start pos:%d, lastBit:%d, stop pos:%d, numBits:%d",iii,lastBit,i,bitnum);
- //move BitStream back to GraphBuffer
-
- ClearGraph(0);
- for (i=0; i < BitLen; ++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=BitLen;
- RepaintGraphWindow();
-
- //output
- if (errCnt>0){
- PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
- }
- PrintAndLog("ASK demoded bitstream:");
- // Now output the bitstream to the scrollback by line of 16 bits
- printBitStream(BitStream,BitLen);
-
- return 1;
+ int invert = 0;
+ int clk = 0;
+
+ sscanf(Cmd, "%i %i", &clk, &invert);
+
+ if (invert != 0 && invert != 1 ) {
+ PrintAndLog("Invalid argument: %s", Cmd);
+ return 0;
+ }
+
+ if ( clock < 0 ) {
+ PrintAndLog("Wrong clock argument");
+ return 0;
+ }
+
+ uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00};
+ int len = GetFromGraphBuf(bits);
+ int errCnt = 0;
+
+ errCnt = askrawdemod(bits, &len, &clk, &invert);
+
+ //throw away static - allow 1 and -1 (in case of threshold command first)
+ if (errCnt == -1) {
+ PrintAndLog("no data found");
+ return 0;
+ }
+
+ if (len < 16) return 0;
+
+ PrintAndLog("Using Clock: %d - invert: %d - Bits Found: %d",clk,invert,len);
+
+ //move BitStream back to GraphBuffer
+ SetGraphBuf(bits, len);
+
+ if (errCnt > 0){
+ PrintAndLog("# Errors during Demoding (shown as 77 in bit stream): %d",errCnt);
+ }
+
+ PrintAndLog("ASK demoded bitstream:");
+
+ // Now output the bitstream to the scrollback by line of 16 bits
+ printBitStream(bits,len);
+ return 1;
}
int CmdAutoCorr(const char *Cmd)
int CmdBitsamples(const char *Cmd)
{
int cnt = 0;
- uint8_t got[12288];
+ uint8_t got[10000];
GetFromBigBuf(got,sizeof(got),0);
WaitForResponse(CMD_ACK,NULL);
int hithigh, hitlow, first;
/* Detect high and lows and clock */
- for (i = 0; i < GraphTraceLen; ++i)
- {
- if (GraphBuffer[i] > high)
- high = GraphBuffer[i];
- else if (GraphBuffer[i] < low)
- low = GraphBuffer[i];
- }
+ DetectHighLowInGraph( &high, &low, FALSE);
/* Get our clock */
- clock = GetClock(Cmd, high, 1);
+ clock = GetClock(Cmd, 0);
gtl = ClearGraph(0);
bit = 0;
bit ^= 1;
AppendGraph(0, clock, bit);
-// for (j = 0; j < (int)(clock/2); j++)
-// GraphBuffer[(i * clock) + j] = bit ^ 1;
-// for (j = (int)(clock/2); j < clock; j++)
-// GraphBuffer[(i * clock) + j] = bit;
}
RepaintGraphWindow();
// uses data from graphbuffer
int CmdDetectClockRate(const char *Cmd)
{
- GetClock("",0,0);
+ GetClock("",1);
return 0;
}
//defaults: clock = 50, invert=0, rchigh=10, rclow=8 (RF/10 RF/8 (fsk2a))
int CmdFSKrawdemod(const char *Cmd)
{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- //set defaults
- int rfLen = 50;
- int invert=0;
- int fchigh=10;
- int fclow=8;
- //set options from parameters entered with the command
- sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ int rfLen = 50;
+ int invert = 0;
+ int fchigh = 10;
+ int fclow = 8;
+
+ //set options from parameters entered with the command
+ sscanf(Cmd, "%i %i %i %i", &rfLen, &invert, &fchigh, &fclow);
- if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
- //rfLen=param_get8(Cmd, 0); //if rfLen option only is used
- if (rfLen==1){
- invert=1; //if invert option only is used
- rfLen = 50;
- } else if(rfLen==0) rfLen=50;
- }
- PrintAndLog("Args invert: %d - Clock:%d - fchigh:%d - fclow: %d",invert,rfLen,fchigh, fclow);
- uint32_t i=0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- uint32_t BitLen = getFromGraphBuf(BitStream);
- int size = fskdemod(BitStream,BitLen,(uint8_t)rfLen,(uint8_t)invert,(uint8_t)fchigh,(uint8_t)fclow);
- if (size>0){
- PrintAndLog("FSK decoded bitstream:");
- ClearGraph(0);
- for (i=0;i<size;++i){
- GraphBuffer[i]=BitStream[i];
- }
- GraphTraceLen=size;
- RepaintGraphWindow();
+ // A lots of checks if chigh, clow is out-of bounds.
- // Now output the bitstream to the scrollback by line of 16 bits
- if(size > (8*32)+2) size = (8*32)+2; //only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
- printBitStream(BitStream,size);
- } else{
- PrintAndLog("no FSK data found");
- }
- return 0;
+ if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
+
+ rfLen = 50;
+
+ //if invert option only is used
+ if (rfLen == 1){
+ invert=1;
+ }
+ }
+
+ PrintAndLog("Args invert: %d - Clock:%d - FC high:%d - FC low: %d",invert,rfLen,fchigh, fclow);
+
+ uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00};
+ uint32_t len = GetFromGraphBuf(bits);
+
+ int size = fskdemod(bits, len,(uint8_t)rfLen, (uint8_t)invert, (uint8_t)fchigh, (uint8_t)fclow);
+
+ if (size > 0) {
+ PrintAndLog("FSK decoded bitstream:");
+
+ SetGraphBuf(bits, size);
+
+ // Now output the bitstream to the scrollback by line of 16 bits
+ // only output a max of 8 blocks of 32 bits most tags will have full bit stream inside that sample size
+ if(size > (8*32)+2)
+ size = (8*32)+2;
+ printBitStream(bits,size);
+ } else {
+ PrintAndLog("no FSK data found");
+ }
+ return 0;
}
//by marshmellow (based on existing demod + holiman's refactor)
//print full HID Prox ID and some bit format details if found
int CmdFSKdemodHID(const char *Cmd)
{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- uint32_t hi2=0, hi=0, lo=0;
-
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- uint32_t BitLen = getFromGraphBuf(BitStream);
- //get binary from fsk wave
- size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo);
- if (size<0){
- PrintAndLog("Error demoding fsk");
- return 0;
- }
- if (hi2==0 && hi==0 && lo==0) return 0;
- if (hi2 != 0){ //extra large HID tags
- PrintAndLog("TAG ID: %x%08x%08x (%d)",
- (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
- setGraphBuf(BitStream,BitLen);
- return 1;
- }
- else { //standard HID tags <38 bits
- //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd
- uint8_t fmtLen = 0;
- uint32_t fc = 0;
- uint32_t cardnum = 0;
- if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
- uint32_t lo2=0;
- lo2=(((hi & 15) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
- uint8_t idx3 = 1;
- while(lo2>1){ //find last bit set to 1 (format len bit)
- lo2=lo2>>1;
- idx3++;
- }
- fmtLen =idx3+19;
- fc =0;
- cardnum=0;
- if(fmtLen==26){
- cardnum = (lo>>1)&0xFFFF;
- fc = (lo>>17)&0xFF;
- }
- if(fmtLen==37){
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint32_t hi2=0, hi=0, lo=0;
+
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0x00};
+ uint32_t BitLen = GetFromGraphBuf(BitStream);
+
+ //get binary from fsk wave
+ size_t size = HIDdemodFSK(BitStream,BitLen,&hi2,&hi,&lo);
+
+ if (size < 0){
+ PrintAndLog("Error demoding fsk");
+ return 0;
+ }
+
+ if (hi2==0 && hi==0 && lo==0) return 0;
+
+ //extra large HID tags
+ if (hi2 != 0){
+ PrintAndLog("TAG ID: %x%08x%08x (%d)",
+ (unsigned int) hi2,
+ (unsigned int) hi,
+ (unsigned int) lo,
+ (unsigned int) (lo>>1) & 0xFFFF);
+ SetGraphBuf(BitStream,BitLen);
+ return 1;
+ } else {
+ //standard HID tags <38 bits
+ uint8_t fmtLen = 0;
+ uint32_t fc = 0;
+ uint32_t cardnum = 0;
+
+ //if bit 38 is set then < 37 bit format is used
+ if (((hi>>5) & 1)==1){
+ uint32_t lo2 = 0;
+
+ //get bits 21-37 to check for format len bit
+ lo2 = (((hi & 15) << 12) | (lo>>20));
+ uint8_t idx3 = 1;
+
+ //find last bit set to 1 (format len bit)
+ while( lo2 > 1){
+ lo2=lo2>>1;
+ idx3++;
+ }
+ fmtLen = idx3 + 19;
+ fc = 0;
+ cardnum = 0;
+
+ if(fmtLen==26){
+ cardnum = (lo>>1)&0xFFFF;
+ fc = (lo>>17)&0xFF;
+ }
+ if(fmtLen==37){
cardnum = (lo>>1)&0x7FFFF;
fc = ((hi&0xF)<<12)|(lo>>20);
}
- if(fmtLen==34){
+ if(fmtLen==34){
cardnum = (lo>>1)&0xFFFF;
fc= ((hi&1)<<15)|(lo>>17);
- }
- if(fmtLen==35){
+ }
+ if(fmtLen==35){
cardnum = (lo>>1)&0xFFFFF;
fc = ((hi&1)<<11)|(lo>>21);
+ }
+ } else {
+ //if bit 38 is not set then 37 bit format is used
+ fmtLen= 37;
+ fc =0;
+ cardnum=0;
+
+ if (fmtLen==37){
+ cardnum = (lo>>1) & 0x7FFFF;
+ fc = ((hi&0xF) << 12) | (lo >> 20);
}
- }
- else { //if bit 38 is not set then 37 bit format is used
- fmtLen= 37;
- fc =0;
- cardnum=0;
- if(fmtLen==37){
- cardnum = (lo>>1)&0x7FFFF;
- fc = ((hi&0xF)<<12)|(lo>>20);
- }
- }
- PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
- (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
- (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
- setGraphBuf(BitStream,BitLen);
+ }
+ PrintAndLog("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
+ (unsigned int) hi,
+ (unsigned int) lo,
+ (unsigned int) (lo>>1) & 0xFFFF,
+ (unsigned int) fmtLen,
+ (unsigned int) fc,
+ (unsigned int) cardnum);
+ SetGraphBuf(BitStream,BitLen);
return 1;
}
return 0;
//print ioprox ID and some format details
int CmdFSKdemodIO(const char *Cmd)
{
- //raw fsk demod no manchester decoding no start bit finding just get binary from wave
- //set defaults
- int idx=0;
- //something in graphbuffer
- if (GraphTraceLen < 65) return 0;
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
- uint32_t BitLen = getFromGraphBuf(BitStream);
- //get binary from fsk wave
- idx = IOdemodFSK(BitStream,BitLen);
- if (idx<0){
- //PrintAndLog("Error demoding fsk");
- return 0;
- }
- if (idx==0){
- //PrintAndLog("IO Prox Data not found - FSK Data:");
- //if (BitLen > 92) printBitStream(BitStream,92);
- return 0;
- }
- //Index map
- //0 10 20 30 40 50 60
- //| | | | | | |
- //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
- //-----------------------------------------------------------------------------
- //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
- //
- //XSF(version)facility:codeone+codetwo (raw)
- //Handle the data
- if (idx+64>BitLen) return 0;
- PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d",BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d facility",BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d version",BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d code1",BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d code2",BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
- PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum",BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
-
- uint32_t code = bytebits_to_byte(BitStream+idx,32);
- uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
- uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
- uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
- uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
-
- PrintAndLog("XSF(%02d)%02x:%05d (%08x%08x)",version,facilitycode,number,code,code2);
- setGraphBuf(BitStream,BitLen);
- return 1;
+ if (GraphTraceLen < 65) {
+ PrintAndLog("data samples size is too small");
+ return 0;
+ }
+
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ //set defaults
+ int idx = 0;
+ uint8_t bits[MAX_GRAPH_TRACE_LEN] = {0x00};
+ uint32_t bitlen = GetFromGraphBuf(bits);
+
+ //get binary from fsk wave
+ idx = IOdemodFSK(bits, bitlen);
+
+ if (idx == 0) {
+ return 0;
+ }
+ if (idx == -1) {
+ PrintAndLog("data samples size is too small");
+ return 0;
+ }
+ if (idx == -2) {
+ PrintAndLog("Data samples has too much noice");
+ return 0;
+ }
+ if (idx == -3){
+ PrintAndLog("No good demod");
+ return 0;
+ }
+
+ if (idx+64 > bitlen) return 0;
+
+ //Index map
+ //0 10 20 30 40 50 60
+ //| | | | | | |
+ //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
+ //-----------------------------------------------------------------------------
+ //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
+ //
+ //XSF(version)facility:codeone+codetwo (raw)
+ //Handle the data
+
+ PrintAndLog("%d%d%d%d%d%d%d%d %d", bits[idx] , bits[idx+1], bits[idx+2], bits[idx+3], bits[idx+4], bits[idx+5], bits[idx+6], bits[idx+7], bits[idx+8]);
+ PrintAndLog("%d%d%d%d%d%d%d%d %d", bits[idx+9] , bits[idx+10], bits[idx+11], bits[idx+12], bits[idx+13], bits[idx+14], bits[idx+15], bits[idx+16], bits[idx+17]);
+ PrintAndLog("%d%d%d%d%d%d%d%d %d facility", bits[idx+18], bits[idx+19], bits[idx+20], bits[idx+21], bits[idx+22], bits[idx+23], bits[idx+24], bits[idx+25], bits[idx+26]);
+ PrintAndLog("%d%d%d%d%d%d%d%d %d version", bits[idx+27], bits[idx+28], bits[idx+29], bits[idx+30], bits[idx+31], bits[idx+32], bits[idx+33], bits[idx+34], bits[idx+35]);
+ PrintAndLog("%d%d%d%d%d%d%d%d %d code1", bits[idx+36], bits[idx+37], bits[idx+38], bits[idx+39], bits[idx+40], bits[idx+41], bits[idx+42], bits[idx+43], bits[idx+44]);
+ PrintAndLog("%d%d%d%d%d%d%d%d %d code2", bits[idx+45], bits[idx+46], bits[idx+47], bits[idx+48], bits[idx+49], bits[idx+50], bits[idx+51], bits[idx+52], bits[idx+53]);
+ PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum", bits[idx+54], bits[idx+55], bits[idx+56], bits[idx+57], bits[idx+58], bits[idx+59], bits[idx+60], bits[idx+61], bits[idx+62], bits[idx+63]);
+
+ uint32_t code = bytebits_to_byte(bits+idx,32);
+ uint32_t code2 = bytebits_to_byte(bits+idx+32,32);
+ uint8_t version = bytebits_to_byte(bits+idx+27,8); //14,4
+ uint8_t facilitycode = bytebits_to_byte(bits+idx+18,8) ;
+ uint16_t number = (bytebits_to_byte(bits+idx+36,8)<<8)|(bytebits_to_byte(bits+idx+45,8)); //36,9
+
+ PrintAndLog("XSF(%02d)%02x:%05d (%08x%08x)", version, facilitycode, number, code, code2);
+ SetGraphBuf(bits, bitlen);
+ return 1;
}
int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
PrintAndLog("actual data bits start at sample %d", maxPos);
PrintAndLog("length %d/%d", highLen, lowLen);
- uint8_t bits[46];
- bits[sizeof(bits)-1] = '\0';
+ uint8_t bits[46] = {0x00};
// find bit pairs and manchester decode them
for (i = 0; i < arraylen(bits) - 1; ++i) {
int CmdSamples(const char *Cmd)
{
- uint8_t got[36440] = {0x00};
-
+ uint8_t got[40000] = {0x00};
+
int n = strtol(Cmd, NULL, 0);
if (n == 0)
n = 20000;
+
if (n > sizeof(got))
n = sizeof(got);
PrintAndLog("Reading %d samples from device memory\n", n);
- GetFromBigBuf(got,n,3560);
+ GetFromBigBuf(got,n,0);
WaitForResponse(CMD_ACK,NULL);
for (int j = 0; j < n; ++j) {
GraphBuffer[j] = ((int)got[j]) - 128;
uint8_t BitStream[MAX_GRAPH_TRACE_LEN] = {0x00};
/* Detect high and lows */
- for (i = 0; i < GraphTraceLen; i++)
- {
- if (GraphBuffer[i] > high)
- high = GraphBuffer[i];
- else if (GraphBuffer[i] < low)
- low = GraphBuffer[i];
- }
-
+ DetectHighLowInGraph( &high, &low, TRUE);
+
/* Get our clock */
- clock = GetClock(Cmd, high, 1);
+ clock = GetClock(Cmd, 0);
int tolerance = clock/4;
/* Detect first transition */
{
int i, j;
int bit, lastbit, wave;
- int clock = GetClock(Cmd, 0, 1);
- int clock1 = GetT55x7Clock( GraphBuffer, GraphTraceLen, 0 );
- PrintAndLog("MAN MOD CLOCKS: %d ice %d", clock,clock1);
-
+ int clock = GetClock(Cmd, 0);
+
int half = (int)(clock/2);
wave = 0;
{"help", CmdHelp, 1, "This help"},
{"amp", CmdAmp, 1, "Amplify peaks"},
{"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"},
- {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"},
- {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0 or 1>] -- Attempt to demodulate ASK tags and output binary (args optional[clock will try Auto-detect])"},
+ {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK/Manchester tags and output binary"},
+ {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert <0|1>] -- Attempt to demodulate ASK tags and output binary"},
{"autocorr", CmdAutoCorr, 1, "<window length> -- Autocorrelation over window"},
{"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"},
{"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
{"dec", CmdDec, 1, "Decimate samples"},
{"detectaskclock",CmdDetectClockRate, 1, "Detect ASK clock rate"},
{"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
+ {"em4xdecode", CmdEm410xDecode, 1, "decode em4x from graph buffer"},
{"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"},
{"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"},
{"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"},
projects / proxmark3-svn / blobdiff