mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-11-11 01:55:38 +08:00
bd4d1ec74e
fix: 'lf awid sim' - Clk param is used CorreCt fix: 'lf HID sim' - unified way logging fix: 'lf indala sim' - adding a draft simulation Command fix: 'lf io sim' - unified way logging fix: 'lf nedap sim' - getting bits is wrong still.. fix: 'lf paradox sim' - Helptext lfdemod.C got some reworked loops, still some debug messages to be ...
1012 lines
31 KiB
C
1012 lines
31 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Low frequency commands
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//-----------------------------------------------------------------------------
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#include "cmdlf.h"
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bool g_lf_threshold_set = false;
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static int CmdHelp(const char *Cmd);
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int usage_lf_cmdread(void) {
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PrintAndLog("Usage: lf cmdread d <delay period> z <zero period> o <one period> c <cmdbytes> [H]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" L Low frequency (125 KHz)");
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PrintAndLog(" H High frequency (134 KHz)");
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PrintAndLog(" d <delay> delay OFF period, (decimal)");
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PrintAndLog(" z <zero> time period ZERO, (decimal)");
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PrintAndLog(" o <one> time period ONE, (decimal)");
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PrintAndLog(" c <cmd> Command bytes (in ones and zeros)");
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PrintAndLog(" ************* All periods in microseconds (ms)");
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PrintAndLog("Examples:");
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PrintAndLog(" lf cmdread d 80 z 100 o 200 c 11000");
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PrintAndLog(" lf cmdread d 80 z 100 o 100 c 11000 H");
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return 0;
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}
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int usage_lf_read(void){
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PrintAndLog("Usage: lf read [h] [s] [d numofsamples]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" s silent run no printout");
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PrintAndLog(" d #samples # samples to collect (optional)");
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PrintAndLog("Use 'lf config' to set parameters.");
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PrintAndLog("");
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PrintAndLog("Samples:");
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PrintAndLog(" lf read s d 12000 - collects 12000samples silent");
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PrintAndLog(" lf read s");
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return 0;
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}
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int usage_lf_snoop(void) {
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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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return 0;
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}
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int usage_lf_config(void) {
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PrintAndLog("Usage: lf config [h] [H|<divisor>] [b <bps>] [d <decim>] [a 0|1]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" L Low frequency (125 KHz)");
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PrintAndLog(" H High frequency (134 KHz)");
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PrintAndLog(" q <divisor> Manually set divisor. 88-> 134KHz, 95-> 125 Hz");
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PrintAndLog(" b <bps> Sets resolution of bits per sample. Default (max): 8");
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PrintAndLog(" d <decim> Sets decimation. A value of N saves only 1 in N samples. Default: 1");
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PrintAndLog(" a [0|1] Averaging - if set, will average the stored sample value when decimating. Default: 1");
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PrintAndLog(" t <threshold> Sets trigger threshold. 0 means no threshold (range: 0-128)");
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PrintAndLog("Examples:");
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PrintAndLog(" lf config b 8 L");
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PrintAndLog(" Samples at 125KHz, 8bps.");
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PrintAndLog(" lf config H b 4 d 3");
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PrintAndLog(" Samples at 134KHz, averages three samples into one, stored with ");
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PrintAndLog(" a resolution of 4 bits per sample.");
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PrintAndLog(" lf read");
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PrintAndLog(" Performs a read (active field)");
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PrintAndLog(" lf snoop");
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PrintAndLog(" Performs a snoop (no active field)");
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return 0;
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}
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int usage_lf_simfsk(void) {
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PrintAndLog("Usage: lf simfsk [c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
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PrintAndLog(" i invert data");
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PrintAndLog(" H <fcHigh> Manually set the larger Field Clock");
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PrintAndLog(" L <fcLow> Manually set the smaller Field Clock");
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//PrintAndLog(" s TBD- -to enable a gap between playback repetitions - default: no gap");
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PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
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PrintAndLog("\n NOTE: if you set one clock manually set them all manually");
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return 0;
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}
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int usage_lf_simask(void) {
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PrintAndLog("Usage: lf simask [c <clock>] [i] [b|m|r] [s] [d <raw hex to sim>]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
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PrintAndLog(" i invert data");
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PrintAndLog(" b sim ask/biphase");
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PrintAndLog(" m sim ask/manchester - Default");
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PrintAndLog(" r sim ask/raw");
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PrintAndLog(" s add t55xx Sequence Terminator gap - default: no gaps (only manchester)");
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PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
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return 0;
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}
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int usage_lf_simpsk(void) {
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PrintAndLog("Usage: lf simpsk [1|2|3] [c <clock>] [i] [r <carrier>] [d <raw hex to sim>]");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" c <clock> Manually set clock - can autodetect if using DemodBuffer");
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PrintAndLog(" i invert data");
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PrintAndLog(" 1 set PSK1 (default)");
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PrintAndLog(" 2 set PSK2");
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PrintAndLog(" 3 set PSK3");
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PrintAndLog(" r <carrier> 2|4|8 are valid carriers: default = 2");
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PrintAndLog(" d <hexdata> Data to sim as hex - omit to sim from DemodBuffer");
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return 0;
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}
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int usage_lf_find(void){
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PrintAndLog("Usage: lf search [h] <0|1> [u]");
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PrintAndLog("");
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PrintAndLog("Options:");
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PrintAndLog(" h This help");
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PrintAndLog(" <0|1> Use data from Graphbuffer, if not set, try reading data from tag.");
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PrintAndLog(" u Search for Unknown tags, if not set, reads only known tags.");
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PrintAndLog("Examples:");
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PrintAndLog(" lf search = try reading data from tag & search for known tags");
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PrintAndLog(" lf search 1 = use data from GraphBuffer & search for known tags");
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PrintAndLog(" lf search u = try reading data from tag & search for known and unknown tags");
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PrintAndLog(" lf search 1 u = use data from GraphBuffer & search for known and unknown tags");
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return 0;
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}
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/* send a LF command before reading */
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int CmdLFCommandRead(const char *Cmd) {
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bool errors = false;
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bool useHighFreq = false;
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uint16_t one = 0, zero = 0;
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uint8_t cmdp = 0;
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UsbCommand c = {CMD_MOD_THEN_ACQUIRE_RAW_ADC_SAMPLES_125K, {0,0,0}};
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while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
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switch(param_getchar(Cmd, cmdp)) {
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case 'h':
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return usage_lf_cmdread();
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case 'H':
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useHighFreq = true;
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cmdp++;
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break;
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case 'L':
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cmdp++;
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break;
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case 'c':
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param_getstr(Cmd, cmdp+1, (char *)&c.d.asBytes);
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cmdp+=2;
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break;
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case 'd':
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c.arg[0] = param_get32ex(Cmd, cmdp+1, 0, 10);
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cmdp+=2;
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break;
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case 'z':
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zero = param_get32ex(Cmd, cmdp+1, 0, 10) & 0xFFFF;
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cmdp+=2;
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break;
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case 'o':
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one = param_get32ex(Cmd, cmdp+1, 0, 10) & 0xFFFF;
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cmdp+=2;
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break;
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default:
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PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
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errors = 1;
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break;
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}
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}
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//Validations
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if (errors || cmdp == 0) return usage_lf_cmdread();
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// zero and one lengths
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c.arg[1] = (uint32_t)(zero << 16 | one);
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// add frequency 125 or 134
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c.arg[2] = useHighFreq;
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdFlexdemod(const char *Cmd) {
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#define LONG_WAIT 100
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int i, j, start, bit, sum;
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int phase = 0;
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for (i = 0; i < GraphTraceLen; ++i)
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GraphBuffer[i] = (GraphBuffer[i] < 0) ? -1 : 1;
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for (start = 0; start < GraphTraceLen - LONG_WAIT; start++) {
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int first = GraphBuffer[start];
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for (i = start; i < start + LONG_WAIT; i++) {
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if (GraphBuffer[i] != first) {
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break;
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}
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}
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if (i == (start + LONG_WAIT))
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break;
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}
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if (start == GraphTraceLen - LONG_WAIT) {
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PrintAndLog("nothing to wait for");
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return 0;
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}
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GraphBuffer[start] = 2;
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GraphBuffer[start+1] = -2;
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uint8_t bits[64] = {0x00};
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i = start;
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for (bit = 0; bit < 64; bit++) {
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sum = 0;
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for (int j = 0; j < 16; j++) {
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sum += GraphBuffer[i++];
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}
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bits[bit] = (sum > 0) ? 1 : 0;
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PrintAndLog("bit %d sum %d", bit, sum);
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}
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for (bit = 0; bit < 64; bit++) {
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sum = 0;
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for (j = 0; j < 16; j++)
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sum += GraphBuffer[i++];
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if (sum > 0 && bits[bit] != 1) PrintAndLog("oops1 at %d", bit);
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if (sum < 0 && bits[bit] != 0) PrintAndLog("oops2 at %d", bit);
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}
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// HACK writing back to graphbuffer.
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GraphTraceLen = 32*64;
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i = 0;
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for (bit = 0; bit < 64; bit++) {
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phase = (bits[bit] == 0) ? 0 : 1;
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for (j = 0; j < 32; j++) {
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GraphBuffer[i++] = phase;
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phase = !phase;
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}
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}
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RepaintGraphWindow();
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return 0;
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}
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int CmdLFSetConfig(const char *Cmd) {
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uint8_t divisor = 0;//Frequency divisor
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uint8_t bps = 0; // Bits per sample
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uint8_t decimation = 0; //How many to keep
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bool averaging = 1; // Defaults to true
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bool errors = false;
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int trigger_threshold = -1;//Means no change
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uint8_t unsigned_trigg = 0;
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uint8_t cmdp = 0;
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while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
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switch(param_getchar(Cmd, cmdp)) {
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case 'h':
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return usage_lf_config();
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case 'H':
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divisor = 88;
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cmdp++;
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break;
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case 'L':
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divisor = 95;
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cmdp++;
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break;
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case 'q':
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errors |= param_getdec(Cmd, cmdp+1, &divisor);
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cmdp+=2;
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break;
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case 't':
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errors |= param_getdec(Cmd, cmdp+1, &unsigned_trigg);
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cmdp+=2;
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if(!errors) {
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trigger_threshold = unsigned_trigg;
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g_lf_threshold_set = (trigger_threshold > 0);
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}
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break;
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case 'b':
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errors |= param_getdec(Cmd, cmdp+1, &bps);
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cmdp+=2;
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break;
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case 'd':
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errors |= param_getdec(Cmd, cmdp+1, &decimation);
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cmdp+=2;
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break;
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case 'a':
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averaging = param_getchar(Cmd, cmdp+1) == '1';
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cmdp+=2;
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break;
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default:
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PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
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errors = 1;
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break;
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}
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}
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//Validations
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if (errors || cmdp == 0) return usage_lf_config();
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//Bps is limited to 8
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if (bps >> 4) bps = 8;
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sample_config config = { decimation, bps, averaging, divisor, trigger_threshold };
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UsbCommand c = {CMD_SET_LF_SAMPLING_CONFIG, {0,0,0} };
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memcpy(c.d.asBytes, &config, sizeof(sample_config));
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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bool lf_read(bool silent, uint32_t samples) {
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if (offline) return false;
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UsbCommand c = {CMD_ACQUIRE_RAW_ADC_SAMPLES_125K, {silent, samples, 0}};
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clearCommandBuffer();
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SendCommand(&c);
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UsbCommand resp;
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if (g_lf_threshold_set) {
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WaitForResponse(CMD_ACK, &resp);
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} else {
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if ( !WaitForResponseTimeout(CMD_ACK, &resp, 2500) ) {
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PrintAndLog("command execution time out");
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return false;
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}
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}
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// resp.arg[0] is bits read not bytes read.
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getSamples(resp.arg[0]/8, silent);
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return true;
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}
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int CmdLFRead(const char *Cmd) {
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if (offline) return 0;
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bool errors = false;
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bool silent = false;
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uint32_t samples = 0;
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uint8_t cmdp = 0;
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while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
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switch(param_getchar(Cmd, cmdp)) {
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case 'h':
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case 'H':
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return usage_lf_read();
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case 's':
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case 'S':
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silent = true;
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cmdp++;
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break;
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case 'd':
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case 'D':
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samples = param_get32ex(Cmd, cmdp, 0, 10);
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cmdp +=2;
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break;
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default:
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PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
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errors = true;
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break;
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}
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}
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//Validations
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if (errors) return usage_lf_read();
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return lf_read(silent, samples);
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}
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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,{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(0, false);
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return 0;
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}
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static void ChkBitstream(const char *str) {
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// convert to bitstream if necessary
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for (int i = 0; i < (int)(GraphTraceLen / 2); i++){
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if (GraphBuffer[i] > 1 || GraphBuffer[i] < 0) {
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CmdGetBitStream("");
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break;
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}
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}
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}
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//Attempt to simulate any wave in buffer (one bit per output sample)
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// converts GraphBuffer to bitstream (based on zero crossings) if needed.
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int CmdLFSim(const char *Cmd) {
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int i,j;
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static int gap;
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sscanf(Cmd, "%i", &gap);
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// convert to bitstream if necessary
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ChkBitstream(Cmd);
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if (g_debugMode)
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printf("DEBUG: Sending [%d bytes]\n", GraphTraceLen);
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//can send only 512 bits at a time (1 byte sent per bit...)
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for (i = 0; i < GraphTraceLen; i += USB_CMD_DATA_SIZE) {
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UsbCommand c = {CMD_DOWNLOADED_SIM_SAMPLES_125K, {i, 0, 0}};
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for (j = 0; j < USB_CMD_DATA_SIZE; j++)
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c.d.asBytes[j] = GraphBuffer[i+j];
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clearCommandBuffer();
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SendCommand(&c);
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WaitForResponse(CMD_ACK, NULL);
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printf(".");
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}
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PrintAndLog("Simulating");
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UsbCommand c = {CMD_SIMULATE_TAG_125K, {GraphTraceLen, gap, 0}};
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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// by marshmellow - sim fsk data given clock, fcHigh, fcLow, invert
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// - allow pull data from DemodBuffer
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int CmdLFfskSim(const char *Cmd) {
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//might be able to autodetect FCs and clock from Graphbuffer if using demod buffer
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// otherwise will need FChigh, FClow, Clock, and bitstream
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uint8_t fcHigh = 0, fcLow = 0, clk = 0;
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uint8_t invert = 0;
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bool errors = false;
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char hexData[32] = {0x00}; // store entered hex data
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uint8_t data[255] = {0x00};
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int dataLen = 0;
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uint8_t cmdp = 0;
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while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
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switch(param_getchar(Cmd, cmdp)){
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case 'h':
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return usage_lf_simfsk();
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case 'i':
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invert = 1;
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cmdp++;
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break;
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case 'c':
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errors |= param_getdec(Cmd, cmdp+1, &clk);
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cmdp += 2;
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break;
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case 'H':
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errors |= param_getdec(Cmd, cmdp+1, &fcHigh);
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cmdp += 2;
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break;
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case 'L':
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errors |= param_getdec(Cmd, cmdp+1, &fcLow);
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cmdp += 2;
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break;
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//case 's':
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// separator = 1;
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// cmdp++;
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// break;
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case 'd':
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dataLen = param_getstr(Cmd, cmdp+1, hexData);
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if (dataLen == 0)
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errors = true;
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else
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dataLen = hextobinarray((char *)data, hexData);
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if (dataLen == 0) errors = true;
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if (errors) PrintAndLog ("Error getting hex data");
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cmdp+=2;
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break;
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default:
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PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
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errors = true;
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break;
|
|
}
|
|
}
|
|
|
|
// No args
|
|
if (cmdp == 0 && DemodBufferLen == 0) return usage_lf_simfsk();
|
|
|
|
//Validations
|
|
if (errors) return usage_lf_simfsk();
|
|
|
|
int firstClockEdge = 0;
|
|
if (dataLen == 0){ //using DemodBuffer
|
|
if (clk == 0 || fcHigh == 0 || fcLow == 0){ //manual settings must set them all
|
|
uint8_t ans = fskClocks(&fcHigh, &fcLow, &clk, 0, &firstClockEdge);
|
|
if (ans==0){
|
|
if (!fcHigh) fcHigh = 10;
|
|
if (!fcLow) fcLow = 8;
|
|
if (!clk) clk = 50;
|
|
}
|
|
}
|
|
} else {
|
|
setDemodBuf(data, dataLen, 0);
|
|
}
|
|
|
|
//default if not found
|
|
if (clk == 0) clk = 50;
|
|
if (fcHigh == 0) fcHigh = 10;
|
|
if (fcLow == 0) fcLow = 8;
|
|
|
|
uint16_t arg1, arg2;
|
|
arg1 = fcHigh << 8 | fcLow;
|
|
arg2 = invert << 8 | clk;
|
|
size_t size = DemodBufferLen;
|
|
if (size > USB_CMD_DATA_SIZE) {
|
|
PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
|
|
size = USB_CMD_DATA_SIZE;
|
|
}
|
|
UsbCommand c = {CMD_FSK_SIM_TAG, {arg1, arg2, size}};
|
|
|
|
memcpy(c.d.asBytes, DemodBuffer, size);
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
|
|
// by marshmellow - sim ask data given clock, invert, manchester or raw, separator
|
|
// - allow pull data from DemodBuffer
|
|
int CmdLFaskSim(const char *Cmd) {
|
|
// autodetect clock from Graphbuffer if using demod buffer
|
|
// needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
|
|
uint8_t encoding = 1, separator = 0, clk = 0, invert = 0;
|
|
bool errors = false;
|
|
char hexData[32] = {0x00};
|
|
uint8_t data[255]= {0x00}; // store entered hex data
|
|
int dataLen = 0;
|
|
uint8_t cmdp = 0;
|
|
|
|
while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
|
|
switch(param_getchar(Cmd, cmdp)) {
|
|
case 'H':
|
|
case 'h': return usage_lf_simask();
|
|
case 'i':
|
|
invert = 1;
|
|
cmdp++;
|
|
break;
|
|
case 'c':
|
|
errors |= param_getdec(Cmd, cmdp+1, &clk);
|
|
cmdp += 2;
|
|
break;
|
|
case 'b':
|
|
encoding = 2; //biphase
|
|
cmdp++;
|
|
break;
|
|
case 'm':
|
|
encoding = 1; //manchester
|
|
cmdp++;
|
|
break;
|
|
case 'r':
|
|
encoding = 0; //raw
|
|
cmdp++;
|
|
break;
|
|
case 's':
|
|
separator = 1;
|
|
cmdp++;
|
|
break;
|
|
case 'd':
|
|
dataLen = param_getstr(Cmd, cmdp+1, hexData);
|
|
if (dataLen == 0)
|
|
errors = true;
|
|
else
|
|
dataLen = hextobinarray((char *)data, hexData);
|
|
|
|
if (dataLen == 0) errors = true;
|
|
if (errors) PrintAndLog ("Error getting hex data, datalen: %d", dataLen);
|
|
cmdp += 2;
|
|
break;
|
|
default:
|
|
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
|
|
errors = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
// No args
|
|
if (cmdp == 0 && DemodBufferLen == 0) return usage_lf_simask();
|
|
|
|
//Validations
|
|
if (errors) return usage_lf_simask();
|
|
|
|
if (dataLen == 0){ //using DemodBuffer
|
|
if (clk == 0)
|
|
clk = GetAskClock("0", false, false);
|
|
} else {
|
|
setDemodBuf(data, dataLen, 0);
|
|
}
|
|
if (clk == 0) clk = 64;
|
|
if (encoding == 0) clk /= 2; //askraw needs to double the clock speed
|
|
|
|
size_t size = DemodBufferLen;
|
|
|
|
if (size > USB_CMD_DATA_SIZE) {
|
|
PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
|
|
size = USB_CMD_DATA_SIZE;
|
|
}
|
|
|
|
PrintAndLog("preparing to sim ask data: %d bits", size);
|
|
|
|
uint16_t arg1, arg2;
|
|
arg1 = clk << 8 | encoding;
|
|
arg2 = invert << 8 | separator;
|
|
|
|
UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
|
|
memcpy(c.d.asBytes, DemodBuffer, size);
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
|
|
// by marshmellow - sim psk data given carrier, clock, invert
|
|
// - allow pull data from DemodBuffer or parameters
|
|
int CmdLFpskSim(const char *Cmd) {
|
|
//might be able to autodetect FC and clock from Graphbuffer if using demod buffer
|
|
//will need carrier, Clock, and bitstream
|
|
uint8_t carrier=0, clk=0;
|
|
uint8_t invert=0;
|
|
bool errors = false;
|
|
char hexData[32] = {0x00}; // store entered hex data
|
|
uint8_t data[255] = {0x00};
|
|
int dataLen = 0;
|
|
uint8_t cmdp = 0;
|
|
uint8_t pskType = 1;
|
|
|
|
while(param_getchar(Cmd, cmdp) != 0x00 && !errors) {
|
|
switch(param_getchar(Cmd, cmdp)) {
|
|
case 'h':
|
|
return usage_lf_simpsk();
|
|
case 'i':
|
|
invert = 1;
|
|
cmdp++;
|
|
break;
|
|
case 'c':
|
|
errors |= param_getdec(Cmd,cmdp+1,&clk);
|
|
cmdp +=2;
|
|
break;
|
|
case 'r':
|
|
errors |= param_getdec(Cmd,cmdp+1,&carrier);
|
|
cmdp += 2;
|
|
break;
|
|
case '1':
|
|
pskType = 1;
|
|
cmdp++;
|
|
break;
|
|
case '2':
|
|
pskType = 2;
|
|
cmdp++;
|
|
break;
|
|
case '3':
|
|
pskType = 3;
|
|
cmdp++;
|
|
break;
|
|
case 'd':
|
|
dataLen = param_getstr(Cmd, cmdp+1, hexData);
|
|
if (dataLen == 0)
|
|
errors = true;
|
|
else
|
|
dataLen = hextobinarray((char *)data, hexData);
|
|
|
|
if (dataLen == 0) errors = true;
|
|
if (errors) PrintAndLog ("Error getting hex data");
|
|
cmdp+=2;
|
|
break;
|
|
default:
|
|
PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
|
|
errors = true;
|
|
break;
|
|
}
|
|
}
|
|
// No args
|
|
if (cmdp == 0 && DemodBufferLen == 0)
|
|
errors = true;
|
|
|
|
//Validations
|
|
if (errors) return usage_lf_simpsk();
|
|
|
|
if (dataLen == 0){ //using DemodBuffer
|
|
PrintAndLog("Getting Clocks");
|
|
|
|
if (clk==0) clk = GetPskClock("", false, false);
|
|
PrintAndLog("clk: %d",clk);
|
|
|
|
if (!carrier) carrier = GetPskCarrier("", false, false);
|
|
PrintAndLog("carrier: %d", carrier);
|
|
|
|
} else {
|
|
setDemodBuf(data, dataLen, 0);
|
|
}
|
|
|
|
if (clk <= 0) clk = 32;
|
|
|
|
if (carrier != 2 && carrier != 4 && carrier != 8 )
|
|
carrier = 2;
|
|
|
|
if (pskType != 1){
|
|
if (pskType == 2){
|
|
//need to convert psk2 to psk1 data before sim
|
|
psk2TOpsk1(DemodBuffer, DemodBufferLen);
|
|
} else {
|
|
PrintAndLog("Sorry, PSK3 not yet available");
|
|
}
|
|
}
|
|
uint16_t arg1, arg2;
|
|
arg1 = clk << 8 | carrier;
|
|
arg2 = invert;
|
|
size_t size = DemodBufferLen;
|
|
if (size > USB_CMD_DATA_SIZE) {
|
|
PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
|
|
size = USB_CMD_DATA_SIZE;
|
|
}
|
|
UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
|
|
PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
|
|
memcpy(c.d.asBytes, DemodBuffer, size);
|
|
clearCommandBuffer();
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
|
|
int CmdLFSimBidir(const char *Cmd) {
|
|
// Set ADC to twice the carrier for a slight supersampling
|
|
// HACK: not implemented in ARMSRC.
|
|
PrintAndLog("Not implemented yet.");
|
|
UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
|
|
SendCommand(&c);
|
|
return 0;
|
|
}
|
|
|
|
int CmdVchDemod(const char *Cmd) {
|
|
// Is this the entire sync pattern, or does this also include some
|
|
// data bits that happen to be the same everywhere? That would be
|
|
// lovely to know.
|
|
static const int SyncPattern[] = {
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
|
|
};
|
|
|
|
// So first, we correlate for the sync pattern, and mark that.
|
|
int bestCorrel = 0, bestPos = 0;
|
|
int i, j, sum = 0;
|
|
|
|
// It does us no good to find the sync pattern, with fewer than 2048 samples after it.
|
|
|
|
for (i = 0; i < (GraphTraceLen - 2048); i++) {
|
|
for (j = 0; j < ARRAYLEN(SyncPattern); j++) {
|
|
sum += GraphBuffer[i+j] * SyncPattern[j];
|
|
}
|
|
if (sum > bestCorrel) {
|
|
bestCorrel = sum;
|
|
bestPos = i;
|
|
}
|
|
}
|
|
PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
|
|
|
|
char bits[257];
|
|
bits[256] = '\0';
|
|
|
|
int worst = INT_MAX, worstPos = 0;
|
|
|
|
for (i = 0; i < 2048; i += 8) {
|
|
sum = 0;
|
|
for (j = 0; j < 8; j++)
|
|
sum += GraphBuffer[bestPos+i+j];
|
|
|
|
if (sum < 0)
|
|
bits[i/8] = '.';
|
|
else
|
|
bits[i/8] = '1';
|
|
|
|
if(abs(sum) < worst) {
|
|
worst = abs(sum);
|
|
worstPos = i;
|
|
}
|
|
}
|
|
PrintAndLog("bits:");
|
|
PrintAndLog("%s", bits);
|
|
PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
|
|
|
|
// clone
|
|
if (strcmp(Cmd, "clone")==0) {
|
|
GraphTraceLen = 0;
|
|
char *s;
|
|
for(s = bits; *s; s++) {
|
|
for(j = 0; j < 16; j++) {
|
|
GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
|
|
}
|
|
}
|
|
RepaintGraphWindow();
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
//by marshmellow
|
|
int CheckChipType(bool getDeviceData) {
|
|
|
|
if (!getDeviceData) return 0;
|
|
|
|
save_restoreDB(GRAPH_SAVE);
|
|
|
|
//check for em4x05/em4x69 chips first
|
|
uint32_t word = 0;
|
|
if (EM4x05IsBlock0(&word)) {
|
|
PrintAndLog("\nValid EM4x05/EM4x69 Chip Found\nTry lf em 4x05... commands\n");
|
|
save_restoreGB(GRAPH_RESTORE);
|
|
return 1;
|
|
}
|
|
|
|
//check for t55xx chip...
|
|
if (tryDetectP1(true)) {
|
|
PrintAndLog("\nValid T55xx Chip Found\nTry `lf t55xx` commands\n");
|
|
save_restoreGB(GRAPH_RESTORE);
|
|
return 1;
|
|
}
|
|
|
|
save_restoreDB(GRAPH_RESTORE);
|
|
return 0;
|
|
}
|
|
|
|
//by marshmellow
|
|
int CmdLFfind(const char *Cmd) {
|
|
int ans = 0;
|
|
size_t minLength = 1000;
|
|
char cmdp = param_getchar(Cmd, 0);
|
|
char testRaw = param_getchar(Cmd, 1);
|
|
|
|
if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') return usage_lf_find();
|
|
|
|
if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
|
|
|
|
bool isOnline = (!offline && (cmdp != '1') );
|
|
|
|
if (isOnline)
|
|
lf_read(true, 30000);
|
|
|
|
if (GraphTraceLen < minLength) {
|
|
PrintAndLog("Data in Graphbuffer was too small.");
|
|
return 0;
|
|
}
|
|
|
|
PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag");
|
|
PrintAndLog("False Positives ARE possible\n");
|
|
PrintAndLog("\nChecking for known tags:\n");
|
|
|
|
// only run these tests if device is online
|
|
if (isOnline) {
|
|
|
|
// only run if graphbuffer is just noise as it should be for hitag/cotag
|
|
if (is_justnoise(GraphBuffer, minLength)) {
|
|
|
|
if (CheckChipType(isOnline) ) return 1;
|
|
if (CmdLFHitagReader("26")) { PrintAndLog("\nValid Hitag Found!"); return 1;}
|
|
if (CmdCOTAGRead("")) { PrintAndLog("\nValid COTAG ID Found!"); return 1;}
|
|
|
|
PrintAndLog("Signal looks just like noise. Quitting.");
|
|
return 0;
|
|
}
|
|
}
|
|
if (EM4x50Read("", false)) { PrintAndLog("\nValid EM4x50 ID Found!"); return 1;}
|
|
if (CmdAWIDDemod("")) { PrintAndLog("\nValid AWID ID Found!"); goto out;}
|
|
if (CmdEM410xDemod("")) { PrintAndLog("\nValid EM410x ID Found!"); goto out;}
|
|
if (CmdFdxDemod("")) { PrintAndLog("\nValid FDX-B ID Found!"); goto out;}
|
|
if (CmdGuardDemod("")) { PrintAndLog("\nValid Guardall G-Prox II ID Found!"); goto out; }
|
|
if (CmdHIDDemod("")) { PrintAndLog("\nValid HID Prox ID Found!"); goto out;}
|
|
if (CmdPSKIdteck("")) { PrintAndLog("\nValid Idteck ID Found!"); goto out;}
|
|
if (CmdIndalaDemod("")) { PrintAndLog("\nValid Indala ID Found!"); goto out;}
|
|
if (CmdIOProxDemod("")) { PrintAndLog("\nValid IO Prox ID Found!"); goto out;}
|
|
if (CmdJablotronDemod("")) { PrintAndLog("\nValid Jablotron ID Found!"); goto out;}
|
|
if (CmdLFNedapDemod("")) { PrintAndLog("\nValid NEDAP ID Found!"); goto out;}
|
|
if (CmdNexWatchDemod("")) { PrintAndLog("\nValid NexWatch ID Found!"); goto out;}
|
|
if (CmdNoralsyDemod("")) { PrintAndLog("\nValid Noralsy ID Found!"); goto out;}
|
|
if (CmdPacDemod("")) { PrintAndLog("\nValid PAC/Stanley ID Found!"); goto out;}
|
|
if (CmdParadoxDemod("")) { PrintAndLog("\nValid Paradox ID Found!"); goto out;}
|
|
if (CmdPrescoDemod("")) { PrintAndLog("\nValid Presco ID Found!"); goto out;}
|
|
if (CmdPyramidDemod("")) { PrintAndLog("\nValid Pyramid ID Found!"); goto out;}
|
|
if (CmdSecurakeyDemod("")) { PrintAndLog("\nValid Securakey ID Found!"); goto out;}
|
|
if (CmdVikingDemod("")) { PrintAndLog("\nValid Viking ID Found!"); goto out;}
|
|
if (CmdVisa2kDemod("")) { PrintAndLog("\nValid Visa2000 ID Found!"); goto out;}
|
|
|
|
// TIdemod? flexdemod?
|
|
|
|
PrintAndLog("\nNo Known Tags Found!\n");
|
|
|
|
if (testRaw=='u' || testRaw=='U'){
|
|
//test unknown tag formats (raw mode)
|
|
PrintAndLog("\nChecking for Unknown tags:\n");
|
|
ans = AutoCorrelate(GraphBuffer, GraphBuffer, GraphTraceLen, 4000, false, false);
|
|
if (ans > 0) {
|
|
|
|
PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
|
|
|
|
if ( ans % 8 == 0) {
|
|
int bytes = (ans / 8);
|
|
PrintAndLog("Possible %d bytes", bytes);
|
|
int blocks = 0;
|
|
if ( bytes % 2 == 0) {
|
|
blocks = (bytes / 2);
|
|
PrintAndLog("Possible 2 blocks, width %d", blocks);
|
|
}
|
|
if ( bytes % 4 == 0) {
|
|
blocks = (bytes / 4);
|
|
PrintAndLog("Possible 4 blocks, width %d", blocks);
|
|
}
|
|
if ( bytes % 8 == 0) {
|
|
blocks = (bytes / 8);
|
|
PrintAndLog("Possible 8 blocks, width %d", blocks);
|
|
}
|
|
if ( bytes % 16 == 0) {
|
|
blocks = (bytes / 16);
|
|
PrintAndLog("Possible 16 blocks, width %d", blocks);
|
|
}
|
|
}
|
|
}
|
|
|
|
//fsk
|
|
if ( GetFskClock("",false,false) ) {
|
|
if ( FSKrawDemod("",true) ) {
|
|
PrintAndLog("\nUnknown FSK Modulated Tag Found!"); goto out;
|
|
}
|
|
}
|
|
|
|
bool st = true;
|
|
if ( ASKDemod_ext("0 0 0",true,false,1,&st) ) {
|
|
PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
|
|
PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
|
|
goto out;
|
|
}
|
|
|
|
if ( CmdPSK1rawDemod("") ) {
|
|
PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
|
|
PrintAndLog("\nCould also be PSK3 - [currently not supported]");
|
|
PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
|
|
goto out;
|
|
}
|
|
|
|
PrintAndLog("\nNo Data Found!\n");
|
|
}
|
|
out:
|
|
// identify chipset
|
|
CheckChipType(isOnline);
|
|
return 0;
|
|
}
|
|
|
|
static command_t CommandTable[] = {
|
|
{"help", CmdHelp, 1, "This help"},
|
|
{"awid", CmdLFAWID, 1, "{ AWID RFIDs... }"},
|
|
{"cotag", CmdLFCOTAG, 1, "{ COTAG CHIPs... }"},
|
|
{"em", CmdLFEM4X, 1, "{ EM4X CHIPs & RFIDs... }"},
|
|
{"fdx", CmdLFFdx, 1, "{ FDX-B RFIDs... }"},
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{"gproxii", CmdLFGuard, 1, "{ Guardall Prox II RFIDs... }"},
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{"hid", CmdLFHID, 1, "{ HID RFIDs... }"},
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{"hitag", CmdLFHitag, 1, "{ Hitag CHIPs... }"},
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{"indala", CmdLFINDALA, 1, "{ Indala RFIDs... }"},
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|
{"io", CmdLFIO, 1, "{ ioProx RFIDs... }"},
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|
{"jablotron", CmdLFJablotron, 1, "{ Jablotron RFIDs... }"},
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|
{"nedap", CmdLFNedap, 1, "{ Nedap RFIDs... }"},
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|
{"nexwatch", CmdLFNEXWATCH, 1, "{ NexWatch RFIDs... }"},
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|
{"noralsy", CmdLFNoralsy, 1, "{ Noralsy RFIDs... }"},
|
|
{"pac", CmdLFPac, 1, "{ PAC/Stanley RFIDs... }"},
|
|
{"paradox", CmdLFParadox, 1, "{ Paradox RFIDs... }"},
|
|
{"pcf7931", CmdLFPCF7931, 1, "{ PCF7931 CHIPs... }"},
|
|
{"presco", CmdLFPresco, 1, "{ Presco RFIDs... }"},
|
|
{"pyramid", CmdLFPyramid, 1, "{ Farpointe/Pyramid RFIDs... }"},
|
|
{"securakey", CmdLFSecurakey, 1, "{ Securakey RFIDs... }"},
|
|
{"ti", CmdLFTI, 1, "{ TI CHIPs... }"},
|
|
{"t55xx", CmdLFT55XX, 1, "{ T55xx CHIPs... }"},
|
|
{"viking", CmdLFViking, 1, "{ Viking RFIDs... }"},
|
|
{"visa2000", CmdLFVisa2k, 1, "{ Visa2000 RFIDs... }"},
|
|
{"config", CmdLFSetConfig, 0, "Set config for LF sampling, bit/sample, decimation, frequency"},
|
|
{"cmdread", CmdLFCommandRead, 0, "<off period> <'0' period> <'1' period> <command> ['h' 134] \n\t\t-- Modulate LF reader field to send command before read (all periods in microseconds)"},
|
|
{"flexdemod", CmdFlexdemod, 1, "Demodulate samples for FlexPass"},
|
|
{"read", CmdLFRead, 0, "['s' silent] 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) \n\t\t-- '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>] [biphase/manchester/raw <'b'|'m'|'r'>] [msg separator 's'] [d <hexdata>] \n\t\t-- Simulate LF ASK tag from demodbuffer or input"},
|
|
{"simfsk", CmdLFfskSim, 0, "[c <clock>] [i] [H <fcHigh>] [L <fcLow>] [d <hexdata>] \n\t\t-- Simulate LF FSK tag from demodbuffer or input"},
|
|
{"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"},
|
|
{"simbidir", CmdLFSimBidir, 0, "Simulate LF tag (with bidirectional data transmission between reader and tag)"},
|
|
{"snoop", CmdLFSnoop, 0, "Snoop LF"},
|
|
{"vchdemod", CmdVchDemod, 1, "['clone'] -- Demodulate samples for VeriChip"},
|
|
{NULL, NULL, 0, NULL}
|
|
};
|
|
|
|
int CmdLF(const char *Cmd) {
|
|
clearCommandBuffer();
|
|
CmdsParse(CommandTable, Cmd);
|
|
return 0;
|
|
}
|
|
|
|
int CmdHelp(const char *Cmd) {
|
|
CmdsHelp(CommandTable);
|
|
return 0;
|
|
}
|