#include "util.h"
#include "cmdmain.h"
#include "cmddata.h"
+#include "lfdemod.h"
static int CmdHelp(const char *Cmd);
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;
}
/*
* Arguments:
* c : 0 or 1
*/
+ //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);
- if (c != 0 && c != 1) {
- PrintAndLog("Invalid argument: %s", Cmd);
- return 0;
- }
-
- /* 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];
- }
-
- 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)
+ */
+ //[marhsmellow] change == to >= for high and <= for low for fuzz
+ 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 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 ) 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 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
+//takes 2 arguments - clock and invert both as integers
+//attempts to demodulate ask while decoding manchester
+//prints binary found and saves in graphbuffer for further commands
+int Cmdaskmandemod(const char *Cmd)
+{
+ int invert = 0;
+ int clk = 0;
+
+ sscanf(Cmd, "%i %i", &clk, &invert);
+
+ 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 tagid = Em410xDecode(bits, len);
+
+ if (tagid > 0){
+ SetGraphBuf(bits, len);
+ printEM410x(tagid);
+ return 1;
+ }
+ return 0;
+}
+
+//by marshmellow
+//manchester decode
+//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 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
+//biphase decode
+//take 01 or 10 = 0 and 11 or 00 = 1
+//takes 1 argument "offset" default = 0 if 1 it will shift the decode by one bit
+// since it is not like manchester and doesn't have an incorrect bit pattern we
+// cannot determine if our decode is correct or if it should be shifted by one bit
+// the argument offset allows us to manually shift if the output is incorrect
+// (better would be to demod and decode at the same time so we can distinguish large
+// 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 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;
+}
+
+
+//by marshmellow
+//takes 2 arguments - clock and invert both as integers
+//attempts to demodulate ask only
+//prints binary found and saves in graphbuffer for further commands
+int Cmdaskrawdemod(const char *Cmd)
+{
+ 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)
{
static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
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();
}
/* Print our clock rate */
+// uses data from graphbuffer
int CmdDetectClockRate(const char *Cmd)
{
- int clock = DetectClock(0);
- PrintAndLog("Auto-detected clock rate: %d", clock);
+ GetClock("",1);
+ return 0;
+}
+
+//by marshmellow
+//fsk raw demod and print binary
+//takes 4 arguments - Clock, invert, rchigh, rclow
+//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
+ 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);
+
+ // A lots of checks if chigh, clow is out-of bounds.
+
+ 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)
+//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
+//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] = {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){
+ cardnum = (lo>>1)&0xFFFF;
+ fc= ((hi&1)<<15)|(lo>>17);
+ }
+ 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);
+ }
+ }
+ 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;
}
-int CmdFSKdemod(const char *Cmd)
+//by marshmellow
+//IO-Prox demod - FSK RF/64 with preamble of 000000001
+//print ioprox ID and some format details
+int CmdFSKdemodIO(const char *Cmd)
+{
+ 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
{
static const int LowTone[] = {
1, 1, 1, 1, 1, -1, -1, -1, -1, -1,
GraphTraceLen -= (convLen + 16);
RepaintGraphWindow();
- // Find bit-sync (3 lo followed by 3 high)
+ // Find bit-sync (3 lo followed by 3 high) (HID ONLY)
int max = 0, maxPos = 0;
for (i = 0; i < 6000; ++i) {
int dec = 0;
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 = 512;
+ 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;
return 0;
}
+int CmdTuneSamples(const char *Cmd)
+{
+ int timeout = 0;
+ printf("\nMeasuring antenna characteristics, please wait...");
+
+ UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING};
+ SendCommand(&c);
+
+ UsbCommand resp;
+ while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING,&resp,1000)) {
+ timeout++;
+ printf(".");
+ if (timeout > 7) {
+ PrintAndLog("\nNo response from Proxmark. Aborting...");
+ return 1;
+ }
+ }
+
+ int peakv, peakf;
+ int vLf125, vLf134, vHf;
+ vLf125 = resp.arg[0] & 0xffff;
+ vLf134 = resp.arg[0] >> 16;
+ vHf = resp.arg[1] & 0xffff;;
+ peakf = resp.arg[2] & 0xffff;
+ peakv = resp.arg[2] >> 16;
+ PrintAndLog("");
+ PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
+ PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
+ PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
+ PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
+ if (peakv<2000)
+ PrintAndLog("# Your LF antenna is unusable.");
+ else if (peakv<10000)
+ PrintAndLog("# Your LF antenna is marginal.");
+ if (vHf<2000)
+ PrintAndLog("# Your HF antenna is unusable.");
+ else if (vHf<5000)
+ PrintAndLog("# Your HF antenna is marginal.");
+
+ for (int i = 0; i < 256; i++) {
+ GraphBuffer[i] = resp.d.asBytes[i] - 128;
+ }
+
+ PrintAndLog("Done! Divisor 89 is 134khz, 95 is 125khz.\n");
+ PrintAndLog("\n");
+ GraphTraceLen = 256;
+ ShowGraphWindow();
+
+ return 0;
+}
+
int CmdLoad(const char *Cmd)
{
- FILE *f = fopen(Cmd, "r");
- if (!f) {
- PrintAndLog("couldn't open '%s'", Cmd);
- return 0;
- }
+ char filename[FILE_PATH_SIZE] = {0x00};
+ int len = 0;
+
+ len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
+
+ FILE *f = fopen(filename, "r");
+ if (!f) {
+ PrintAndLog("couldn't open '%s'", filename);
+ return 0;
+ }
GraphTraceLen = 0;
char line[80];
RepaintGraphWindow();
return 0;
}
+int CmdRtrim(const char *Cmd)
+{
+ int ds = atoi(Cmd);
+
+ GraphTraceLen = ds;
+
+ RepaintGraphWindow();
+ return 0;
+}
/*
* Manchester demodulate a bitstream. The bitstream needs to be already in
/* But it does not work if compiling on WIndows: therefore we just allocate a */
/* large array */
- uint8_t BitStream[MAX_GRAPH_TRACE_LEN];
+ 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 */
break;
}
}
-
- PrintAndLog("Clock: %d", clock);
/* If we're not working with 1/0s, demod based off clock */
if (high != 1)
{
- PrintAndLog("Entering path A");
bit = 0; /* We assume the 1st bit is zero, it may not be
* the case: this routine (I think) has an init problem.
* Ed.
// At this stage, we now have a bitstream of "01" ("1") or "10" ("0"), parse it into final decoded bitstream
// Actually, we overwrite BitStream with the new decoded bitstream, we just need to be careful
// to stop output at the final bitidx2 value, not bitidx
- for (i = 0; i < bitidx; i += 2) {
+
+ //http://www.proxmark.org/forum/viewtopic.php?id=403
+ for (i = 1; i < bitidx; i += 2) {
if ((BitStream[i] == 0) && (BitStream[i+1] == 1)) {
BitStream[bit2idx++] = 1 ^ invert;
} else if ((BitStream[i] == 1) && (BitStream[i+1] == 0)) {
BitStream[i+14],
BitStream[i+15]);
}
- return 0;
+ return bit2idx;
}
/* Modulate our data into manchester */
int CmdManchesterMod(const char *Cmd)
{
int i, j;
- int clock;
int bit, lastbit, wave;
-
- /* Get our clock */
- clock = GetClock(Cmd, 0, 1);
-
+ int clock = GetClock(Cmd, 0);
+
+ int half = (int)(clock/2);
+
wave = 0;
lastbit = 1;
for (i = 0; i < (int)(GraphTraceLen / clock); i++)
{
bit = GraphBuffer[i * clock] ^ 1;
- for (j = 0; j < (int)(clock/2); j++)
+ for (j = 0; j < half; ++j)
GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave;
- for (j = (int)(clock/2); j < clock; j++)
+ for (j = half; j < clock; ++j)
GraphBuffer[(i * clock) + j] = bit ^ lastbit ^ wave ^ 1;
/* Keep track of how we start our wave and if we changed or not this time */
int CmdSave(const char *Cmd)
{
- FILE *f = fopen(Cmd, "w");
+ char filename[FILE_PATH_SIZE] = {0x00};
+ int len = 0;
+
+ len = strlen(Cmd);
+ if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
+ memcpy(filename, Cmd, len);
+
+
+ FILE *f = fopen(filename, "w");
if(!f) {
- PrintAndLog("couldn't open '%s'", Cmd);
+ PrintAndLog("couldn't open '%s'", filename);
return 0;
}
int i;
{"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|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"},
{"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"},
{"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
{"dec", CmdDec, 1, "Decimate samples"},
- {"detectclock", CmdDetectClockRate, 1, "Detect clock rate"},
+ {"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"},
+ {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1 or 0)(rchigh = 10)(rclow=8)"},
{"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
{"hide", CmdHide, 1, "Hide graph window"},
{"hpf", CmdHpf, 1, "Remove DC offset from trace"},
{"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
{"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
+ {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
{"mandemod", CmdManchesterDemod, 1, "[i] [clock rate] -- Manchester demodulate binary stream (option 'i' to invert output)"},
+ {"manrawdecode", Cmdmandecoderaw, 1, "Manchester decode binary stream already in graph buffer"},
{"manmod", CmdManchesterMod, 1, "[clock rate] -- Manchester modulate a binary stream"},
{"norm", CmdNorm, 1, "Normalize max/min to +/-500"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
{"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
{"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
{"threshold", CmdThreshold, 1, "<threshold> -- Maximize/minimize every value in the graph window depending on threshold"},
+ {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
{"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
- {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
{NULL, NULL, 0, NULL}
};
projects / proxmark3-svn / blobdiff