From: marshmellow42 Date: Fri, 6 Mar 2015 17:28:54 +0000 (-0500) Subject: lf sim fixes/creations correct now X-Git-Tag: show~6^2~6 X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/78f5b1a77cad221aaa9739b8003c4ab3d2c7fbe8 lf sim fixes/creations correct now fixed lf simpsk fixed lf em em410xsim fixed lf sim (can go right from lf search to lf sim if you have a strong antenna - if not use a demod first) --- diff --git a/armsrc/lfops.c b/armsrc/lfops.c index 3684eaaf..13cf2967 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -438,86 +438,6 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol) } } -//Testing to fix timing issues by marshmellow (MM) -void SimulateTagLowFrequencyMM(int period, int gap, int ledcontrol) -{ - int i; - uint8_t *tab = BigBuf_get_addr(); - - FpgaDownloadAndGo(FPGA_BITSTREAM_LF); - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT); - - AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK; - - AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT; - AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK; - - #define SHORT_COIL() LOW(GPIO_SSC_DOUT) - #define OPEN_COIL() HIGH(GPIO_SSC_DOUT) - - i = 0; - while(!BUTTON_PRESS()) { - - WDT_HIT(); - //wait until reader carrier is HIGH - while(!(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK)) { - WDT_HIT(); - } - if (i>0){ - if (tab[i]!=tab[i-1]){ - // transition - if (ledcontrol) - LED_D_ON(); - - // modulate coil - if(tab[i]) - OPEN_COIL(); - else - SHORT_COIL(); - - if (ledcontrol) - LED_D_OFF(); - - } else { //no transition - //NOTE: it appears the COIL transition messes with the detection of the carrier, so if a transition happened - // skip test for readers Carrier = LOW, otherwise we get a bit behind - - //wait until reader carrier is LOW - while(AT91C_BASE_PIOA->PIO_PDSR & GPIO_SSC_CLK) { - WDT_HIT(); - } - } - } else { - // transition - if (ledcontrol) - LED_D_ON(); - - // modulate coil - if(tab[i]) - OPEN_COIL(); - else - SHORT_COIL(); - - if (ledcontrol) - LED_D_OFF(); - } - WDT_HIT(); - - - i++; - if(i == period) { - // end of data stream, gap then repeat - i = 0; - if (gap) { - SHORT_COIL(); - SpinDelayUs(gap); - } - } - } - DbpString("Stopped"); - return; -} - #define DEBUG_FRAME_CONTENTS 1 void SimulateTagLowFrequencyBidir(int divisor, int t0) { @@ -586,7 +506,7 @@ static void fcAll(uint8_t c, int *n, uint8_t clock, uint16_t *modCnt) for (idx=0; idx < (uint8_t) clock/c; idx++){ // loop through field clock length - put 1/2 FC length 1's and 1/2 0's per field clock wave (to create the wave) for (fcCnt=0; fcCnt < c; fcCnt++){ //fudge slow transition from low to high - shorten wave by 1 - if (fcCnt < c/2+1){ + if (fcCnt < c/2){ dest[((*n)++)]=0; } else { //fudge low to high transition @@ -600,7 +520,7 @@ static void fcAll(uint8_t c, int *n, uint8_t clock, uint16_t *modCnt) if ((mod>0) && modAdjOk){ //fsk2 if ((*modCnt % modAdj) == 0){ //if 4th 8 length wave in a rf/50 add extra 8 length wave for (fcCnt=0; fcCnt < c; fcCnt++){ //fudge slow transition from low to high - shorten wave by 1 - if (fcCnt < c/2+1){ + if (fcCnt < c/2){ dest[((*n)++)]=0; } else { //if (c==8 && fcCnt==5) continue; @@ -637,7 +557,7 @@ void CmdHIDsimTAG(int hi, int lo, int ledcontrol) */ if (hi>0xFFF) { - DbpString("Tags can only have 44 bits."); + DbpString("Tags can only have 44 bits. - USE lf simfsk for larger tags"); return; } fc(0,&n); @@ -701,7 +621,8 @@ void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream) } } Dbprintf("Simulating with fcHigh: %d, fcLow: %d, clk: %d, invert: %d, n: %d",fcHigh, fcLow, clk, invert, n); - Dbprintf("First 64:"); + WDT_HIT(); + /*Dbprintf("First 64:"); uint8_t *dest = BigBuf_get_addr(); i=0; Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]); @@ -733,10 +654,10 @@ void CmdFSKsimTAG(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream) Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]); i+=16; Dbprintf("%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d", dest[i],dest[i+1],dest[i+2],dest[i+3],dest[i+4],dest[i+5],dest[i+6],dest[i+7],dest[i+8],dest[i+9],dest[i+10],dest[i+11],dest[i+12],dest[i+13],dest[i+14],dest[i+15]); - + */ if (ledcontrol) LED_A_ON(); - SimulateTagLowFrequencyMM(n, 0, ledcontrol); + SimulateTagLowFrequency(n, 0, ledcontrol); if (ledcontrol) LED_A_OFF(); @@ -779,7 +700,6 @@ void CmdASKsimTag(uint16_t arg1, uint16_t arg2, size_t size, uint8_t *BitStream) uint8_t manchester = arg1 & 1; uint8_t separator = arg2 & 1; uint8_t invert = (arg2 >> 8) & 1; - WDT_HIT(); for (i=0; i> 8) & 1; - uint8_t curPhase = 0; WDT_HIT(); + uint8_t curPhase = 0; for (i=0; i high) @@ -176,9 +175,9 @@ int Cmdaskdemod(const char *Cmd) * down) */ //[marhsmellow] change == to >= for high and <= for low for fuzz - if ((GraphBuffer[i] == high) && (GraphBuffer[i - 1] == c)) { + if ((GraphBuffer[i] >= high) && (GraphBuffer[i - 1] == c)) { GraphBuffer[i] = 1 - c; - } else if ((GraphBuffer[i] == low) && (GraphBuffer[i - 1] == (1 - c))){ + } else if ((GraphBuffer[i] <= low) && (GraphBuffer[i - 1] == (1 - c))){ GraphBuffer[i] = c; } else { /* No transition */ @@ -189,6 +188,23 @@ int Cmdaskdemod(const char *Cmd) return 0; } +//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer +int CmdGetBitStream(const char *Cmd) +{ + int i; + CmdHpf(Cmd); + for (i = 0; i < GraphTraceLen; i++) { + if (GraphBuffer[i] >= 1) { + GraphBuffer[i] = 1; + } else { + GraphBuffer[i] = 0; + } + } + RepaintGraphWindow(); + return 0; +} + + //by marshmellow void printBitStream(uint8_t BitStream[], uint32_t bitLen) { @@ -1954,6 +1970,7 @@ int CmdHide(const char *Cmd) return 0; } +//zero mean GraphBuffer int CmdHpf(const char *Cmd) { int i; @@ -2561,6 +2578,7 @@ static command_t CommandTable[] = {"fskpyramiddemod",CmdFSKdemodPyramid,1, "Demodulate a Pyramid FSK tag from GraphBuffer"}, {"fskparadoxdemod",CmdFSKdemodParadox,1, "Demodulate a Paradox FSK tag from GraphBuffer"}, //{"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"}, + {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"}, {"grid", CmdGrid, 1, " -- overlay grid on graph window, use zero value to turn off either"}, {"hexsamples", CmdHexsamples, 0, " [] -- Dump big buffer as hex bytes"}, {"hide", CmdHide, 1, "Hide graph window"}, diff --git a/client/cmddata.h b/client/cmddata.h index 673a2ba0..a746d89f 100644 --- a/client/cmddata.h +++ b/client/cmddata.h @@ -39,6 +39,7 @@ int CmdFSKrawdemod(const char *Cmd); int CmdPSK1rawDemod(const char *Cmd); int CmdPSK2rawDemod(const char *Cmd); int CmdGrid(const char *Cmd); +int CmdGetBitStream(const char *Cmd); int CmdHexsamples(const char *Cmd); int CmdHide(const char *Cmd); int CmdHpf(const char *Cmd); diff --git a/client/cmdlf.c b/client/cmdlf.c index 1222b3ce..1c53c204 100644 --- a/client/cmdlf.c +++ b/client/cmdlf.c @@ -510,11 +510,11 @@ int CmdLFSnoop(const char *Cmd) static void ChkBitstream(const char *str) { int i; - + /* convert to bitstream if necessary */ for (i = 0; i < (int)(GraphTraceLen / 2); i++){ if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) { - CmdBitstream(str); + CmdGetBitStream(""); break; } } @@ -528,6 +528,7 @@ int CmdLFSim(const char *Cmd) sscanf(Cmd, "%i", &gap); /* convert to bitstream if necessary */ + ChkBitstream(Cmd); //can send 512 bits at a time (1 byte sent per bit...) @@ -878,6 +879,7 @@ int CmdLFpskSim(const char *Cmd) uint16_t arg1, arg2; arg1 = clk << 8 | carrier; arg2 = invert; + UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, DemodBufferLen}}; if (DemodBufferLen > USB_CMD_DATA_SIZE) { PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", DemodBufferLen, USB_CMD_DATA_SIZE); @@ -885,6 +887,7 @@ int CmdLFpskSim(const char *Cmd) PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", DemodBufferLen); memcpy(c.d.asBytes, DemodBuffer, DemodBufferLen); SendCommand(&c); + return 0; } @@ -899,6 +902,7 @@ int CmdLFSimBidir(const char *Cmd) } /* simulate an LF Manchester encoded tag with specified bitstream, clock rate and inter-id gap */ +/* int CmdLFSimManchester(const char *Cmd) { static int clock, gap; @@ -919,7 +923,7 @@ int CmdLFSimManchester(const char *Cmd) CmdLFSim(gapstring); return 0; } - +*/ int CmdVchDemod(const char *Cmd) { @@ -1111,11 +1115,11 @@ static command_t CommandTable[] = {"read", CmdLFRead, 0, "Read 125/134 kHz LF ID-only tag. Do 'lf read h' for help"}, {"search", CmdLFfind, 1, "[offline] ['u'] Read and Search for valid known tag (in offline mode it you can load first then search) - 'u' to search for unknown tags"}, {"sim", CmdLFSim, 0, "[GAP] -- Simulate LF tag from buffer with optional GAP (in microseconds)"}, - {"simask", CmdLFaskSim, 0, "[clock] [invert <1|0>] [manchester/raw <'m'|'r'>] [trs separator 's'] [d ] -- Simulate LF ASK tag from demodbuffer or input"}, + {"simask", CmdLFaskSim, 0, "[clock] [invert <1|0>] [manchester/raw <'m'|'r'>] [msg separator 's'] [d ] -- Simulate LF ASK tag from demodbuffer or input"}, {"simfsk", CmdLFfskSim, 0, "[c ] [i] [H ] [L ] [d ] -- Simulate LF FSK tag from demodbuffer or input"}, {"simpsk", CmdLFpskSim, 0, "[1|2|3] [c ] [i] [r ] [d ] -- Simulate LF PSK tag from demodbuffer or input"}, {"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"}, - {"simman", CmdLFSimManchester, 0, " [GAP] Simulate arbitrary Manchester LF tag"}, + //{"simman", CmdLFSimManchester, 0, " [GAP] Simulate arbitrary Manchester LF tag"}, {"snoop", CmdLFSnoop, 0, "['l'|'h'|] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"}, {"ti", CmdLFTI, 1, "{ TI RFIDs... }"}, {"hitag", CmdLFHitag, 1, "{ Hitag tags and transponders... }"}, diff --git a/client/cmdlf.h b/client/cmdlf.h index 18a28b10..254d8807 100644 --- a/client/cmdlf.h +++ b/client/cmdlf.h @@ -23,7 +23,7 @@ int CmdLFaskSim(const char *Cmd); int CmdLFfskSim(const char *Cmd); int CmdLFpskSim(const char *Cmd); int CmdLFSimBidir(const char *Cmd); -int CmdLFSimManchester(const char *Cmd); +//int CmdLFSimManchester(const char *Cmd); int CmdLFSnoop(const char *Cmd); int CmdVchDemod(const char *Cmd); int CmdLFfind(const char *Cmd); diff --git a/client/cmdlfem4x.c b/client/cmdlfem4x.c index 232d5635..f6671bcd 100644 --- a/client/cmdlfem4x.c +++ b/client/cmdlfem4x.c @@ -266,7 +266,7 @@ int CmdEM410xSim(const char *Cmd) /* stop bit */ AppendGraph(1, clock, 0); - CmdLFSim("240"); //240 start_gap. + CmdLFSim("0"); //240 start_gap. return 0; } diff --git a/client/graph.c b/client/graph.c index 243da466..190dfe8f 100644 --- a/client/graph.c +++ b/client/graph.c @@ -24,10 +24,10 @@ void AppendGraph(int redraw, int clock, int bit) int i; //set first half the clock bit (all 1's or 0's for a 0 or 1 bit) for (i = 0; i < (int)(clock / 2); ++i) - GraphBuffer[GraphTraceLen++] = bit ^ 1; + GraphBuffer[GraphTraceLen++] = bit ; //set second half of the clock bit (all 0's or 1's for a 0 or 1 bit) for (i = (int)(clock / 2); i < clock; ++i) - GraphBuffer[GraphTraceLen++] = bit; + GraphBuffer[GraphTraceLen++] = bit ^ 1; if (redraw) RepaintGraphWindow();