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https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-20 23:36:31 +08:00
CHG: 'lf snoop' - now automatically downloads samples after finished. (annoying step to do over and over)
FIX: 'lf snoop' - now turns of LF antenna after snoop. FIX: 'lf cotag read' - now waits until the ACK cmd arrives before downloading samples.
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@ -78,6 +78,8 @@ void ModThenAcquireRawAdcSamples125k(uint32_t delay_off, uint32_t periods, uint3
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// now do the read
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DoAcquisition_config(false);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
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}
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/* blank r/w tag data stream
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@ -1740,12 +1742,12 @@ void EM4xWriteWord(uint32_t Data, uint8_t Address, uint32_t Pwd, uint8_t PwdMode
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void Cotag() {
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//#define WAIT2200 { FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); WaitUS(2035); }
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#define WAIT2200 { FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); WaitUS(2200); }
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LED_A_ON();
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//clear buffer now so it does not interfere with timing later
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BigBuf_Clear_keep_EM();
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BigBuf_Clear_ext(false);
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// Set up FPGA, 132kHz to power up the tag
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FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
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@ -1755,28 +1757,33 @@ void Cotag() {
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// Connect the A/D to the peak-detected low-frequency path.
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SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
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// 50ms for the resonant antenna to settle.
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SpinDelay(50);
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// Now set up the SSC to get the ADC samples that are now streaming at us.
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FpgaSetupSsc();
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// start a 1.5ticks is 1us
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StartTicks();
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//send start pulse
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TurnReadLFOn(800);
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WAIT2200
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TurnReadLFOn(3600);
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WAIT2200
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TurnReadLFOn(800);
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WAIT2200
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TurnReadLFOn(800); WAIT2200
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TurnReadLFOn(3600); WAIT2200
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TurnReadLFOn(800); WAIT2200
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TurnReadLFOn(3600);
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// Turn field on to read the response
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TurnReadLFOn(READ_GAP);
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/*
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TurnReadLFOn(740); WAIT2200
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TurnReadLFOn(3330); WAIT2200
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TurnReadLFOn(740); WAIT2200
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TurnReadLFOn(3330);
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burst 800 us, gap 2.2 msecs
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burst 3.6 msecs gap 2.2 msecs
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burst 800 us gap 2.2 msecs
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pulse 3.6 msecs
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*/
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// Acquisition
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doT55x7Acquisition(20000);
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DoAcquisition_default(-1, true);
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// Turn the field off
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off
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@ -110,7 +110,7 @@ void LFSetupFPGAForADC(int divisor, bool lf_field) {
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* @param silent - is true, now outputs are made. If false, dbprints the status
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* @return the number of bits occupied by the samples.
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*/
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uint32_t DoAcquisition(uint8_t decimation, uint32_t bits_per_sample, bool averaging, int trigger_threshold,bool silent) {
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uint32_t DoAcquisition(uint8_t decimation, uint32_t bits_per_sample, bool averaging, int trigger_threshold, bool silent) {
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//bigbuf, to hold the aquired raw data signal
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uint8_t *dest = BigBuf_get_addr();
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uint16_t bufsize = BigBuf_max_traceLen();
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@ -224,14 +224,20 @@ uint32_t ReadLF(bool activeField, bool silent) {
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* @return number of bits sampled
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**/
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uint32_t SampleLF(bool printCfg) {
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return ReadLF(true, printCfg);
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BigBuf_Clear_ext(false);
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uint32_t ret = ReadLF(true, printCfg);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
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return ret;
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}
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/**
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* Initializes the FPGA for snoop-mode (field off), and acquires the samples.
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* @return number of bits sampled
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**/
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uint32_t SnoopLF() {
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return ReadLF(false, true);
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BigBuf_Clear_ext(false);
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uint32_t ret = ReadLF(false, true);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
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return ret;
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}
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/**
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@ -36,11 +36,10 @@ int usage_lf_read(void){
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return 0;
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}
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int usage_lf_snoop(void) {
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PrintAndLog("Usage: lf snoop");
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PrintAndLog("Snoop low frequence signal. Use 'lf config' to set parameters.");
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PrintAndLog("Usage: lf snoop [h]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog("This function takes no arguments. ");
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PrintAndLog("Use 'lf config' to set parameters.");
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PrintAndLog(" h This help");
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return 0;
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}
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int usage_lf_config(void) {
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@ -568,10 +567,11 @@ int CmdLFSnoop(const char *Cmd) {
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uint8_t cmdp = param_getchar(Cmd, 0);
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if(cmdp == 'h' || cmdp == 'H') return usage_lf_snoop();
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UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES};
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UsbCommand c = {CMD_LF_SNOOP_RAW_ADC_SAMPLES,{0,0,0}};
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clearCommandBuffer();
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SendCommand(&c);
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WaitForResponse(CMD_ACK,NULL);
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getSamples("", false);
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return 0;
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}
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@ -1221,7 +1221,7 @@ static command_t CommandTable[] =
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{"simfsk", CmdLFfskSim, 0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
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{"simpsk", CmdLFpskSim, 0, "[1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>] \n\t\t-- Simulate LF PSK tag from demodbuffer or input"},
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{"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
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{"snoop", CmdLFSnoop, 0, "['l'|'h'|<divisor>] [trigger threshold]-- Snoop LF (l:125khz, h:134khz)"},
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{"snoop", CmdLFSnoop, 0, "Snoop LF"},
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{"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"},
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{NULL, NULL, 0, NULL}
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};
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@ -18,9 +18,13 @@ int CmdCOTAGRead(const char *Cmd) {
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UsbCommand c = {CMD_COTAG, {0, 0, 0}};
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clearCommandBuffer();
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SendCommand(&c);
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getSamples("20000", TRUE);
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return CmdFSKdemodAWID(Cmd);
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if ( !WaitForResponseTimeout(CMD_ACK, NULL, 2500) ) {
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//PrintAndLog("command execution time out");
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return 1;
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}
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getSamples("", true);
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//return CmdFSKdemodAWID(Cmd);
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return 0;
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}
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static command_t CommandTable[] = {
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