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ADD: 'lf animal' commands. CLONE/SIM/READ/DEMOD of FXD-B animal tags. Still some...
[proxmark3-svn] / client / cmddata.c
1 //-----------------------------------------------------------------------------
2 // Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
3 //
4 // This code is licensed to you under the terms of the GNU GPL, version 2 or,
5 // at your option, any later version. See the LICENSE.txt file for the text of
6 // the license.
7 //-----------------------------------------------------------------------------
8 // Data and Graph commands
9 //-----------------------------------------------------------------------------
10
11 #include <stdio.h> // also included in util.h
12 #include <string.h> // also included in util.h
13 #include <limits.h> // for CmdNorm INT_MIN && INT_MAX
14 #include "data.h" // also included in util.h
15 #include "cmddata.h"
16 #include "util.h"
17 #include "cmdmain.h"
18 #include "proxmark3.h"
19 #include "ui.h" // for show graph controls
20 #include "graph.h" // for graph data
21 #include "cmdparser.h"// already included in cmdmain.h
22 #include "usb_cmd.h" // already included in cmdmain.h and proxmark3.h
23 #include "lfdemod.h" // for demod code
24 #include "crc.h" // for pyramid checksum maxim
25 #include "crc16.h" // for FDXB demod checksum
26 #include "loclass/cipherutils.h" // for decimating samples in getsamples
27
28 uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
29 uint8_t g_debugMode = 0;
30 size_t DemodBufferLen = 0;
31 static int CmdHelp(const char *Cmd);
32
33 int usage_data_printdemodbuf(void){
34 PrintAndLog("Usage: data printdemodbuffer x o <offset> l <length>");
35 PrintAndLog("Options:");
36 PrintAndLog(" h This help");
37 PrintAndLog(" x output in hex (omit for binary output)");
38 PrintAndLog(" o <offset> enter offset in # of bits");
39 PrintAndLog(" l <length> enter length to print in # of bits or hex characters respectively");
40 return 0;
41 }
42 int usage_data_askem410xdemod(void){
43 PrintAndLog("Usage: data askem410xdemod [clock] <0|1> [maxError]");
44 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
45 PrintAndLog(" <invert>, 1 for invert output");
46 PrintAndLog(" [set maximum allowed errors], default = 100.");
47 PrintAndLog("");
48 PrintAndLog(" sample: data askem410xdemod = demod an EM410x Tag ID from GraphBuffer");
49 PrintAndLog(" : data askem410xdemod 32 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32");
50 PrintAndLog(" : data askem410xdemod 32 1 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/32 and inverting data");
51 PrintAndLog(" : data askem410xdemod 1 = demod an EM410x Tag ID from GraphBuffer while inverting data");
52 PrintAndLog(" : data askem410xdemod 64 1 0 = demod an EM410x Tag ID from GraphBuffer using a clock of RF/64 and inverting data and allowing 0 demod errors");
53 return 0;
54 }
55 int usage_data_manrawdecode(void){
56 PrintAndLog("Usage: data manrawdecode [invert] [maxErr]");
57 PrintAndLog(" Takes 10 and 01 and converts to 0 and 1 respectively");
58 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
59 PrintAndLog(" [invert] invert output");
60 PrintAndLog(" [maxErr] set number of errors allowed (default = 20)");
61 PrintAndLog("");
62 PrintAndLog(" sample: data manrawdecode = decode manchester bitstream from the demodbuffer");
63 return 0;
64 }
65 int usage_data_biphaserawdecode(void){
66 PrintAndLog("Usage: data biphaserawdecode [offset] [invert] [maxErr]");
67 PrintAndLog(" Converts 10 or 01 to 1 and 11 or 00 to 0");
68 PrintAndLog(" --must have binary sequence in demodbuffer (run data askrawdemod first)");
69 PrintAndLog(" --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
70 PrintAndLog("");
71 PrintAndLog(" [offset <0|1>], set to 0 not to adjust start position or to 1 to adjust decode start position");
72 PrintAndLog(" [invert <0|1>], set to 1 to invert output");
73 PrintAndLog(" [maxErr int], set max errors tolerated - default=20");
74 PrintAndLog("");
75 PrintAndLog(" sample: data biphaserawdecode = decode biphase bitstream from the demodbuffer");
76 PrintAndLog(" sample: data biphaserawdecode 1 1 = decode biphase bitstream from the demodbuffer, set offset, and invert output");
77 return 0;
78 }
79 int usage_data_rawdemod(void){
80 PrintAndLog("Usage: data rawdemod [modulation] <help>|<options>");
81 PrintAndLog(" [modulation] as 2 char, 'ab' for ask/biphase, 'am' for ask/manchester, 'ar' for ask/raw, 'fs' for fsk, ...");
82 PrintAndLog(" 'nr' for nrz/direct, 'p1' for psk1, 'p2' for psk2");
83 PrintAndLog(" <help> as 'h', prints the help for the specific modulation");
84 PrintAndLog(" <options> see specific modulation help for optional parameters");
85 PrintAndLog("");
86 PrintAndLog(" sample: data rawdemod fs h = print help specific to fsk demod");
87 PrintAndLog(" : data rawdemod fs = demod GraphBuffer using: fsk - autodetect");
88 PrintAndLog(" : data rawdemod ab = demod GraphBuffer using: ask/biphase - autodetect");
89 PrintAndLog(" : data rawdemod am = demod GraphBuffer using: ask/manchester - autodetect");
90 PrintAndLog(" : data rawdemod ar = demod GraphBuffer using: ask/raw - autodetect");
91 PrintAndLog(" : data rawdemod nr = demod GraphBuffer using: nrz/direct - autodetect");
92 PrintAndLog(" : data rawdemod p1 = demod GraphBuffer using: psk1 - autodetect");
93 PrintAndLog(" : data rawdemod p2 = demod GraphBuffer using: psk2 - autodetect");
94 return 0;
95 }
96 int usage_data_rawdemod_am(void){
97 PrintAndLog("Usage: data rawdemod am <s> [clock] <invert> [maxError] [maxLen] [amplify]");
98 PrintAndLog(" ['s'] optional, check for Sequence Terminator");
99 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
100 PrintAndLog(" <invert>, 1 to invert output");
101 PrintAndLog(" [set maximum allowed errors], default = 100");
102 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
103 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
104 PrintAndLog("");
105 PrintAndLog(" sample: data rawdemod am = demod an ask/manchester tag from GraphBuffer");
106 PrintAndLog(" : data rawdemod am 32 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32");
107 PrintAndLog(" : data rawdemod am 32 1 = demod an ask/manchester tag from GraphBuffer using a clock of RF/32 and inverting data");
108 PrintAndLog(" : data rawdemod am 1 = demod an ask/manchester tag from GraphBuffer while inverting data");
109 PrintAndLog(" : data rawdemod am 64 1 0 = demod an ask/manchester tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
110 return 0;
111 }
112 int usage_data_rawdemod_ab(void){
113 PrintAndLog("Usage: data rawdemod ab [offset] [clock] <invert> [maxError] [maxLen] <amplify>");
114 PrintAndLog(" [offset], offset to begin biphase, default=0");
115 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
116 PrintAndLog(" <invert>, 1 to invert output");
117 PrintAndLog(" [set maximum allowed errors], default = 100");
118 PrintAndLog(" [set maximum Samples to read], default = 32768 (512 bits at rf/64)");
119 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
120 PrintAndLog(" NOTE: <invert> can be entered as second or third argument");
121 PrintAndLog(" NOTE: <amplify> can be entered as first, second or last argument");
122 PrintAndLog(" NOTE: any other arg must have previous args set to work");
123 PrintAndLog("");
124 PrintAndLog(" NOTE: --invert for Conditional Dephase Encoding (CDP) AKA Differential Manchester");
125 PrintAndLog("");
126 PrintAndLog(" sample: data rawdemod ab = demod an ask/biph tag from GraphBuffer");
127 PrintAndLog(" : data rawdemod ab 0 a = demod an ask/biph tag from GraphBuffer, amplified");
128 PrintAndLog(" : data rawdemod ab 1 32 = demod an ask/biph tag from GraphBuffer using an offset of 1 and a clock of RF/32");
129 PrintAndLog(" : data rawdemod ab 0 32 1 = demod an ask/biph tag from GraphBuffer using a clock of RF/32 and inverting data");
130 PrintAndLog(" : data rawdemod ab 0 1 = demod an ask/biph tag from GraphBuffer while inverting data");
131 PrintAndLog(" : data rawdemod ab 0 64 1 0 = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
132 PrintAndLog(" : data rawdemod ab 0 64 1 0 0 a = demod an ask/biph tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
133 return 0;
134 }
135 int usage_data_rawdemod_ar(void){
136 PrintAndLog("Usage: data rawdemod ar [clock] <invert> [maxError] [maxLen] [amplify]");
137 PrintAndLog(" [set clock as integer] optional, if not set, autodetect");
138 PrintAndLog(" <invert>, 1 to invert output");
139 PrintAndLog(" [set maximum allowed errors], default = 100");
140 PrintAndLog(" [set maximum Samples to read], default = 32768 (1024 bits at rf/64)");
141 PrintAndLog(" <amplify>, 'a' to attempt demod with ask amplification, default = no amp");
142 PrintAndLog("");
143 PrintAndLog(" sample: data rawdemod ar = demod an ask tag from GraphBuffer");
144 PrintAndLog(" : data rawdemod ar a = demod an ask tag from GraphBuffer, amplified");
145 PrintAndLog(" : data rawdemod ar 32 = demod an ask tag from GraphBuffer using a clock of RF/32");
146 PrintAndLog(" : data rawdemod ar 32 1 = demod an ask tag from GraphBuffer using a clock of RF/32 and inverting data");
147 PrintAndLog(" : data rawdemod ar 1 = demod an ask tag from GraphBuffer while inverting data");
148 PrintAndLog(" : data rawdemod ar 64 1 0 = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
149 PrintAndLog(" : data rawdemod ar 64 1 0 0 a = demod an ask tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors, and amp");
150 return 0;
151 }
152 int usage_data_rawdemod_fs(void){
153 PrintAndLog("Usage: data rawdemod fs [clock] <invert> [fchigh] [fclow]");
154 PrintAndLog(" [set clock as integer] optional, omit for autodetect.");
155 PrintAndLog(" <invert>, 1 for invert output, can be used even if the clock is omitted");
156 PrintAndLog(" [fchigh], larger field clock length, omit for autodetect");
157 PrintAndLog(" [fclow], small field clock length, omit for autodetect");
158 PrintAndLog("");
159 PrintAndLog(" sample: data rawdemod fs = demod an fsk tag from GraphBuffer using autodetect");
160 PrintAndLog(" : data rawdemod fs 32 = demod an fsk tag from GraphBuffer using a clock of RF/32, autodetect fc");
161 PrintAndLog(" : data rawdemod fs 1 = demod an fsk tag from GraphBuffer using autodetect, invert output");
162 PrintAndLog(" : data rawdemod fs 32 1 = demod an fsk tag from GraphBuffer using a clock of RF/32, invert output, autodetect fc");
163 PrintAndLog(" : data rawdemod fs 64 0 8 5 = demod an fsk1 RF/64 tag from GraphBuffer");
164 PrintAndLog(" : data rawdemod fs 50 0 10 8 = demod an fsk2 RF/50 tag from GraphBuffer");
165 PrintAndLog(" : data rawdemod fs 50 1 10 8 = demod an fsk2a RF/50 tag from GraphBuffer");
166 return 0;
167 }
168 int usage_data_rawdemod_nr(void){
169 PrintAndLog("Usage: data rawdemod nr [clock] <0|1> [maxError]");
170 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
171 PrintAndLog(" <invert>, 1 for invert output");
172 PrintAndLog(" [set maximum allowed errors], default = 100.");
173 PrintAndLog("");
174 PrintAndLog(" sample: data rawdemod nr = demod a nrz/direct tag from GraphBuffer");
175 PrintAndLog(" : data rawdemod nr 32 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32");
176 PrintAndLog(" : data rawdemod nr 32 1 = demod a nrz/direct tag from GraphBuffer using a clock of RF/32 and inverting data");
177 PrintAndLog(" : data rawdemod nr 1 = demod a nrz/direct tag from GraphBuffer while inverting data");
178 PrintAndLog(" : data rawdemod nr 64 1 0 = demod a nrz/direct tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
179 return 0;
180 }
181 int usage_data_rawdemod_p1(void){
182 PrintAndLog("Usage: data rawdemod p1 [clock] <0|1> [maxError]");
183 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
184 PrintAndLog(" <invert>, 1 for invert output");
185 PrintAndLog(" [set maximum allowed errors], default = 100.");
186 PrintAndLog("");
187 PrintAndLog(" sample: data rawdemod p1 = demod a psk1 tag from GraphBuffer");
188 PrintAndLog(" : data rawdemod p1 32 = demod a psk1 tag from GraphBuffer using a clock of RF/32");
189 PrintAndLog(" : data rawdemod p1 32 1 = demod a psk1 tag from GraphBuffer using a clock of RF/32 and inverting data");
190 PrintAndLog(" : data rawdemod p1 1 = demod a psk1 tag from GraphBuffer while inverting data");
191 PrintAndLog(" : data rawdemod p1 64 1 0 = demod a psk1 tag from GraphBuffer using a clock of RF/64, inverting data and allowing 0 demod errors");
192 return 0;
193 }
194 int usage_data_rawdemod_p2(void){
195 PrintAndLog("Usage: data rawdemod p2 [clock] <0|1> [maxError]");
196 PrintAndLog(" [set clock as integer] optional, if not set, autodetect.");
197 PrintAndLog(" <invert>, 1 for invert output");
198 PrintAndLog(" [set maximum allowed errors], default = 100.");
199 PrintAndLog("");
200 PrintAndLog(" sample: data rawdemod p2 = demod a psk2 tag from GraphBuffer, autodetect clock");
201 PrintAndLog(" : data rawdemod p2 32 = demod a psk2 tag from GraphBuffer using a clock of RF/32");
202 PrintAndLog(" : data rawdemod p2 32 1 = demod a psk2 tag from GraphBuffer using a clock of RF/32 and inverting output");
203 PrintAndLog(" : data rawdemod p2 1 = demod a psk2 tag from GraphBuffer, autodetect clock and invert output");
204 PrintAndLog(" : data rawdemod p2 64 1 0 = demod a psk2 tag from GraphBuffer using a clock of RF/64, inverting output and allowing 0 demod errors");
205 return 0;
206 }
207 int usage_data_autocorr(void) {
208 PrintAndLog("Usage: data autocorr [window] [g]");
209 PrintAndLog("Options:");
210 PrintAndLog(" h This help");
211 PrintAndLog(" [window] window length for correlation - default = 4000");
212 PrintAndLog(" g save back to GraphBuffer (overwrite)");
213 return 0;
214 }
215 int usage_data_undecimate(void){
216 PrintAndLog("Usage: data undec [factor]");
217 PrintAndLog("This function performs un-decimation, by repeating each sample N times");
218 PrintAndLog("Options: ");
219 PrintAndLog(" h This help");
220 PrintAndLog(" factor The number of times to repeat each sample.[default:2]");
221 PrintAndLog("Example: 'data undec 3'");
222 return 0;
223 }
224 int usage_data_detectclock(void){
225 PrintAndLog("Usage: data detectclock [modulation] <clock>");
226 PrintAndLog(" [modulation as char], specify the modulation type you want to detect the clock of");
227 PrintAndLog(" <clock> , specify the clock (optional - to get best start position only)");
228 PrintAndLog(" 'a' = ask, 'f' = fsk, 'n' = nrz/direct, 'p' = psk");
229 PrintAndLog("");
230 PrintAndLog(" sample: data detectclock a = detect the clock of an ask modulated wave in the GraphBuffer");
231 PrintAndLog(" data detectclock f = detect the clock of an fsk modulated wave in the GraphBuffer");
232 PrintAndLog(" data detectclock p = detect the clock of an psk modulated wave in the GraphBuffer");
233 PrintAndLog(" data detectclock n = detect the clock of an nrz/direct modulated wave in the GraphBuffer");
234 return 0;
235 }
236 int usage_data_hex2bin(void){
237 PrintAndLog("Usage: data hex2bin <hex_digits>");
238 PrintAndLog(" This function will ignore all non-hexadecimal characters (but stop reading on whitespace)");
239 return 0;
240 }
241 int usage_data_bin2hex(void){
242 PrintAndLog("Usage: data bin2hex <binary_digits>");
243 PrintAndLog(" This function will ignore all characters not 1 or 0 (but stop reading on whitespace)");
244 return 0;
245 }
246
247 //set the demod buffer with given array of binary (one bit per byte)
248 //by marshmellow
249 void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
250 {
251 if (buff == NULL)
252 return;
253
254 if ( size >= MAX_DEMOD_BUF_LEN)
255 size = MAX_DEMOD_BUF_LEN;
256
257 for (size_t i = 0; i < size; i++)
258 DemodBuffer[i]=buff[startIdx++];
259
260 DemodBufferLen = size;
261 }
262
263 int CmdSetDebugMode(const char *Cmd) {
264 int demod = 0;
265 sscanf(Cmd, "%i", &demod);
266 g_debugMode = (uint8_t)demod;
267 return 1;
268 }
269
270 //by marshmellow
271 void printDemodBuff(void)
272 {
273 int bitLen = DemodBufferLen;
274 if (bitLen<1) {
275 PrintAndLog("no bits found in demod buffer");
276 return;
277 }
278 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
279
280 char *bin = sprint_bin_break(DemodBuffer, bitLen,16);
281 PrintAndLog("%s",bin);
282
283 return;
284 }
285
286 int CmdPrintDemodBuff(const char *Cmd)
287 {
288 char hex[512]={0x00};
289 bool hexMode = false;
290 bool errors = false;
291 uint32_t offset = 0; //could be size_t but no param_get16...
292 uint32_t length = 512;
293 char cmdp = 0;
294 while(param_getchar(Cmd, cmdp) != 0x00)
295 {
296 switch(param_getchar(Cmd, cmdp))
297 {
298 case 'h':
299 case 'H':
300 return usage_data_printdemodbuf();
301 case 'x':
302 case 'X':
303 hexMode = true;
304 cmdp++;
305 break;
306 case 'o':
307 case 'O':
308 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
309 if (!offset) errors = true;
310 cmdp += 2;
311 break;
312 case 'l':
313 case 'L':
314 length = param_get32ex(Cmd, cmdp+1, 512, 10);
315 if (!length) errors = true;
316 cmdp += 2;
317 break;
318 default:
319 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
320 errors = true;
321 break;
322 }
323 if(errors) break;
324 }
325 //Validations
326 if(errors) return usage_data_printdemodbuf();
327 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
328 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
329
330 if (hexMode){
331 char *buf = (char *) (DemodBuffer + offset);
332 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
333 numBits = binarraytohex(hex, buf, numBits);
334 if (numBits==0) return 0;
335 PrintAndLog("DemodBuffer: %s",hex);
336 } else {
337 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
338 }
339 return 1;
340 }
341
342 //by marshmellow
343 //this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
344 int CmdGetBitStream(const char *Cmd)
345 {
346 int i;
347 CmdHpf(Cmd);
348 for (i = 0; i < GraphTraceLen; i++) {
349 if (GraphBuffer[i] >= 1) {
350 GraphBuffer[i] = 1;
351 } else {
352 GraphBuffer[i] = 0;
353 }
354 }
355 RepaintGraphWindow();
356 return 0;
357 }
358
359 //by marshmellow
360 //print 64 bit EM410x ID in multiple formats
361 void printEM410x(uint32_t hi, uint64_t id)
362 {
363 if (id || hi){
364 uint64_t iii=1;
365 uint64_t id2lo=0;
366 uint32_t ii=0;
367 uint32_t i=0;
368 for (ii=5; ii>0;ii--){
369 for (i=0;i<8;i++){
370 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
371 }
372 }
373 if (hi){
374 //output 88 bit em id
375 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
376 } else{
377 //output 40 bit em id
378 PrintAndLog("\nEM TAG ID : %010llX", id);
379 PrintAndLog("Unique TAG ID : %010llX", id2lo);
380 PrintAndLog("\nPossible de-scramble patterns");
381 PrintAndLog("HoneyWell IdentKey {");
382 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
383 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
384 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
385 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
386 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
387 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
388 PrintAndLog("DEZ 14/IK2 : %014lld",id);
389 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
390 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
391 (id2lo & 0xf000000000) >> 36,
392 (id2lo & 0x0f00000000) >> 32,
393 (id2lo & 0x00f0000000) >> 28,
394 (id2lo & 0x000f000000) >> 24,
395 (id2lo & 0x0000f00000) >> 20,
396 (id2lo & 0x00000f0000) >> 16,
397 (id2lo & 0x000000f000) >> 12,
398 (id2lo & 0x0000000f00) >> 8,
399 (id2lo & 0x00000000f0) >> 4,
400 (id2lo & 0x000000000f)
401 );
402 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
403 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
404 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
405
406 uint32_t p1id = (id & 0xFFFFFF);
407 uint8_t arr[32] = {0x00};
408 int i =0;
409 int j = 23;
410 for (; i < 24; ++i, --j ){
411 arr[i] = (p1id >> i) & 1;
412 }
413
414 uint32_t p1 = 0;
415
416 p1 |= arr[23] << 21;
417 p1 |= arr[22] << 23;
418 p1 |= arr[21] << 20;
419 p1 |= arr[20] << 22;
420
421 p1 |= arr[19] << 18;
422 p1 |= arr[18] << 16;
423 p1 |= arr[17] << 19;
424 p1 |= arr[16] << 17;
425
426 p1 |= arr[15] << 13;
427 p1 |= arr[14] << 15;
428 p1 |= arr[13] << 12;
429 p1 |= arr[12] << 14;
430
431 p1 |= arr[11] << 6;
432 p1 |= arr[10] << 2;
433 p1 |= arr[9] << 7;
434 p1 |= arr[8] << 1;
435
436 p1 |= arr[7] << 0;
437 p1 |= arr[6] << 8;
438 p1 |= arr[5] << 11;
439 p1 |= arr[4] << 3;
440
441 p1 |= arr[3] << 10;
442 p1 |= arr[2] << 4;
443 p1 |= arr[1] << 5;
444 p1 |= arr[0] << 9;
445 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
446
447 uint16_t sebury1 = id & 0xFFFF;
448 uint8_t sebury2 = (id >> 16) & 0x7F;
449 uint32_t sebury3 = id & 0x7FFFFF;
450 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
451 }
452 }
453 return;
454 }
455
456 int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
457 {
458 size_t idx = 0;
459 size_t size = DemodBufferLen;
460 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
461 memcpy(BitStream, DemodBuffer, size);
462 int ans = Em410xDecode(BitStream, &size, &idx, hi, lo);
463 if ( ans < 0){
464 if (g_debugMode){
465
466 if (ans == -1)
467 PrintAndLog("DEBUG: Error - Em410x not only 0|1 in decoded bitstream");
468 else if (ans == -3)
469 PrintAndLog("DEBUG: Error - Em410x Size not correct: %d", size);
470 else if (ans == -4)
471 PrintAndLog("DEBUG: Error - Em410x preamble not found");
472 else if (ans == -5)
473 PrintAndLog("DEBUG: Error - Em410x parity failed");
474 }
475 return 0;
476 }
477
478 //set GraphBuffer for clone or sim command
479 setDemodBuf(BitStream, size, idx);
480 if (g_debugMode){
481 PrintAndLog("DEBUG: Em410x idx: %d, Len: %d, Printing Demod Buffer:", idx, size);
482 printDemodBuff();
483 }
484 if (verbose){
485 PrintAndLog("EM410x pattern found: ");
486 printEM410x(*hi, *lo);
487 }
488 return 1;
489 }
490
491 int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
492 {
493 bool st = TRUE;
494 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
495 return AskEm410xDecode(verbose, hi, lo);
496 }
497
498 //by marshmellow
499 //takes 3 arguments - clock, invert and maxErr as integers
500 //attempts to demodulate ask while decoding manchester
501 //prints binary found and saves in graphbuffer for further commands
502 int CmdAskEM410xDemod(const char *Cmd)
503 {
504 char cmdp = param_getchar(Cmd, 0);
505 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
506 return usage_data_askem410xdemod();
507
508 uint64_t lo = 0;
509 uint32_t hi = 0;
510 return AskEm410xDemod(Cmd, &hi, &lo, true);
511 }
512
513 //by marshmellow
514 //Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
515 // (amp may not be needed anymore)
516 //verbose will print results and demoding messages
517 //emSearch will auto search for EM410x format in bitstream
518 //askType switches decode: ask/raw = 0, ask/manchester = 1
519 int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
520 int invert=0;
521 int clk=0;
522 int maxErr=100;
523 int maxLen=0;
524 uint8_t askAmp = 0;
525 char amp = param_getchar(Cmd, 0);
526 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
527 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
528 if (!maxLen) maxLen = BIGBUF_SIZE;
529 if (invert != 0 && invert != 1) {
530 PrintAndLog("Invalid argument: %s", Cmd);
531 return 0;
532 }
533 if (clk==1){
534 invert=1;
535 clk=0;
536 }
537 if (amp == 'a' || amp == 'A') askAmp=1;
538 size_t BitLen = getFromGraphBuf(BitStream);
539 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
540 if (BitLen<255) return 0;
541 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
542 int foundclk = 0;
543 bool st = false;
544 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
545 if (st) {
546 *stCheck = st;
547 clk = (clk == 0) ? foundclk : clk;
548 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
549 }
550 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
551 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
552 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
553 return 0;
554 }
555 if (errCnt>maxErr){
556 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
557 return 0;
558 }
559 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
560
561 //output
562 setDemodBuf(BitStream,BitLen,0);
563 if (verbose || g_debugMode){
564 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
565 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
566 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
567 // Now output the bitstream to the scrollback by line of 16 bits
568 printDemodBuff();
569
570 }
571 uint64_t lo = 0;
572 uint32_t hi = 0;
573 if (emSearch){
574 AskEm410xDecode(true, &hi, &lo);
575 }
576 return 1;
577 }
578 int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
579 bool st = false;
580 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
581 }
582
583 //by marshmellow
584 //takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
585 //attempts to demodulate ask while decoding manchester
586 //prints binary found and saves in graphbuffer for further commands
587 int Cmdaskmandemod(const char *Cmd)
588 {
589 char cmdp = param_getchar(Cmd, 0);
590 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
591 return usage_data_rawdemod_am();
592
593 bool st = TRUE;
594 if (Cmd[0]=='s')
595 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
596 else if (Cmd[1] == 's')
597 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
598 else
599 return ASKDemod(Cmd, TRUE, TRUE, 1);
600 }
601
602 //by marshmellow
603 //manchester decode
604 //stricktly take 10 and 01 and convert to 0 and 1
605 int Cmdmandecoderaw(const char *Cmd)
606 {
607 int i =0;
608 int errCnt=0;
609 size_t size=0;
610 int invert=0;
611 int maxErr = 20;
612 char cmdp = param_getchar(Cmd, 0);
613 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H')
614 return usage_data_manrawdecode();
615
616 if (DemodBufferLen==0) return 0;
617 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
618 int high=0,low=0;
619 for (;i<DemodBufferLen;++i){
620 if (DemodBuffer[i]>high) high=DemodBuffer[i];
621 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
622 BitStream[i]=DemodBuffer[i];
623 }
624 if (high>7 || low <0 ){
625 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
626 return 0;
627 }
628
629 sscanf(Cmd, "%i %i", &invert, &maxErr);
630 size=i;
631 errCnt=manrawdecode(BitStream, &size, invert);
632 if (errCnt>=maxErr){
633 PrintAndLog("Too many errors: %d",errCnt);
634 return 0;
635 }
636 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
637 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
638 if (errCnt==0){
639 uint64_t id = 0;
640 uint32_t hi = 0;
641 size_t idx=0;
642 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
643 //need to adjust to set bitstream back to manchester encoded data
644 //setDemodBuf(BitStream, size, idx);
645
646 printEM410x(hi, id);
647 }
648 }
649 return 1;
650 }
651
652 //by marshmellow
653 //biphase decode
654 //take 01 or 10 = 0 and 11 or 00 = 1
655 //takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
656 // and "invert" default = 0 if 1 it will invert output
657 // the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
658 int CmdBiphaseDecodeRaw(const char *Cmd)
659 {
660 size_t size=0;
661 int offset=0, invert=0, maxErr=20, errCnt=0;
662 char cmdp = param_getchar(Cmd, 0);
663 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H')
664 return usage_data_biphaserawdecode();
665
666 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
667 if (DemodBufferLen==0){
668 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
669 return 0;
670 }
671 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
672 memcpy(BitStream, DemodBuffer, DemodBufferLen);
673 size = DemodBufferLen;
674 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
675 if (errCnt<0){
676 PrintAndLog("Error during decode:%d", errCnt);
677 return 0;
678 }
679 if (errCnt>maxErr){
680 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
681 return 0;
682 }
683
684 if (errCnt>0){
685 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
686 }
687 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
688 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
689
690 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
691 return 1;
692 }
693
694 //by marshmellow
695 // - ASK Demod then Biphase decode GraphBuffer samples
696 int ASKbiphaseDemod(const char *Cmd, bool verbose)
697 {
698 //ask raw demod GraphBuffer first
699 int offset=0, clk=0, invert=0, maxErr=0;
700 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
701
702 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
703 size_t size = getFromGraphBuf(BitStream);
704 if (size == 0 ) {
705 if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");
706 return 0;
707 }
708 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
709 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
710 if ( errCnt < 0 || errCnt > maxErr ) {
711 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
712 return 0;
713 }
714
715 //attempt to Biphase decode BitStream
716 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
717 if (errCnt < 0){
718 if (g_debugMode || verbose) PrintAndLog("DEBUG: Error BiphaseRawDecode: %d", errCnt);
719 return 0;
720 }
721 if (errCnt > maxErr) {
722 if (g_debugMode || verbose) PrintAndLog("DEBUG: Error BiphaseRawDecode too many errors: %d", errCnt);
723 return 0;
724 }
725 //success set DemodBuffer and return
726 setDemodBuf(BitStream, size, 0);
727 if (g_debugMode || verbose){
728 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
729 printDemodBuff();
730 }
731 return 1;
732 }
733 //by marshmellow - see ASKbiphaseDemod
734 int Cmdaskbiphdemod(const char *Cmd)
735 {
736 char cmdp = param_getchar(Cmd, 0);
737 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
738 return usage_data_rawdemod_ab();
739
740 return ASKbiphaseDemod(Cmd, TRUE);
741 }
742
743 //by marshmellow
744 //attempts to demodulate and identify a G_Prox_II verex/chubb card
745 //WARNING: if it fails during some points it will destroy the DemodBuffer data
746 // but will leave the GraphBuffer intact.
747 //if successful it will push askraw data back to demod buffer ready for emulation
748 int CmdG_Prox_II_Demod(const char *Cmd)
749 {
750 if (!ASKbiphaseDemod(Cmd, FALSE)){
751 if (g_debugMode) PrintAndLog("DEBUG: Error - gProxII ASKbiphaseDemod failed 1st try");
752 return 0;
753 }
754 size_t size = DemodBufferLen;
755 //call lfdemod.c demod for gProxII
756 int ans = gProxII_Demod(DemodBuffer, &size);
757 if (ans < 0){
758 if (g_debugMode) PrintAndLog("DEBUG: Error - gProxII demod");
759 return 0;
760 }
761 //got a good demod of 96 bits
762 uint8_t ByteStream[8] = {0x00};
763 uint8_t xorKey=0;
764 size_t startIdx = ans + 6; //start after 6 bit preamble
765
766 uint8_t bits_no_spacer[90];
767 //so as to not mess with raw DemodBuffer copy to a new sample array
768 memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
769 // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
770 size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
771 if (bitLen != 72) {
772 if (g_debugMode) PrintAndLog("DEBUG: Error - gProxII spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
773 return 0;
774 }
775 // get key and then get all 8 bytes of payload decoded
776 xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
777 for (size_t idx = 0; idx < 8; idx++) {
778 ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
779 if (g_debugMode) PrintAndLog("DEBUG: gProxII byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
780 }
781 //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
782 //
783 uint8_t fmtLen = ByteStream[0]>>2;
784 uint32_t FC = 0;
785 uint32_t Card = 0;
786 //get raw 96 bits to print
787 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
788 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
789 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
790
791 if (fmtLen==36){
792 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
793 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
794 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
795 } else if(fmtLen==26){
796 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
797 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
798 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
799 } else {
800 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
801 PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8));
802 }
803 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
804 setDemodBuf(DemodBuffer+ans, 96, 0);
805 return 1;
806 }
807
808 //by marshmellow
809 //see ASKDemod for what args are accepted
810 int CmdVikingDemod(const char *Cmd)
811 {
812 if (!ASKDemod(Cmd, false, false, 1)) {
813 if (g_debugMode) PrintAndLog("DEBUG: Error - Viking ASKDemod failed");
814 return 0;
815 }
816 size_t size = DemodBufferLen;
817 //call lfdemod.c demod for Viking
818 int ans = VikingDemod_AM(DemodBuffer, &size);
819 if (ans < 0) {
820 if (g_debugMode) PrintAndLog("DEBUG: Error - Viking Demod %d %s", ans, (ans == -5)?"[chksum error]":"");
821 return 0;
822 }
823 //got a good demod
824 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
825 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
826 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
827 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
828 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
829 PrintAndLog("Raw: %08X%08X", raw1,raw2);
830 setDemodBuf(DemodBuffer+ans, 64, 0);
831 return 1;
832 }
833
834 //by marshmellow - see ASKDemod
835 int Cmdaskrawdemod(const char *Cmd)
836 {
837 char cmdp = param_getchar(Cmd, 0);
838 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
839 return usage_data_rawdemod_ar();
840
841 return ASKDemod(Cmd, TRUE, FALSE, 0);
842 }
843
844 int AutoCorrelate(int window, bool SaveGrph, bool verbose)
845 {
846 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
847 size_t Correlation = 0;
848 int maxSum = 0;
849 int lastMax = 0;
850 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
851 for (int i = 0; i < GraphTraceLen - window; ++i) {
852 int sum = 0;
853 for (int j = 0; j < window; ++j) {
854 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
855 }
856 CorrelBuffer[i] = sum;
857 if (sum >= maxSum-100 && sum <= maxSum+100){
858 //another max
859 Correlation = i-lastMax;
860 lastMax = i;
861 if (sum > maxSum) maxSum = sum;
862 } else if (sum > maxSum){
863 maxSum=sum;
864 lastMax = i;
865 }
866 }
867 if (Correlation==0){
868 //try again with wider margin
869 for (int i = 0; i < GraphTraceLen - window; i++){
870 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
871 //another max
872 Correlation = i-lastMax;
873 lastMax = i;
874 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
875 }
876 }
877 }
878 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
879
880 if (SaveGrph){
881 GraphTraceLen = GraphTraceLen - window;
882 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
883 RepaintGraphWindow();
884 }
885 return Correlation;
886 }
887
888 int CmdAutoCorr(const char *Cmd)
889 {
890 char cmdp = param_getchar(Cmd, 0);
891 if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr();
892 int window = 4000; //set default
893 char grph=0;
894 bool updateGrph = FALSE;
895 sscanf(Cmd, "%i %c", &window, &grph);
896
897 if (window >= GraphTraceLen) {
898 PrintAndLog("window must be smaller than trace (%d samples)",
899 GraphTraceLen);
900 return 0;
901 }
902 if (grph == 'g') updateGrph=TRUE;
903 return AutoCorrelate(window, updateGrph, TRUE);
904 }
905
906 int CmdBitsamples(const char *Cmd)
907 {
908 int cnt = 0;
909 uint8_t got[12288];
910
911 GetFromBigBuf(got, sizeof(got), 0);
912 WaitForResponse(CMD_ACK, NULL);
913
914 for (int j = 0; j < sizeof(got); j++) {
915 for (int k = 0; k < 8; k++) {
916 if(got[j] & (1 << (7 - k))) {
917 GraphBuffer[cnt++] = 1;
918 } else {
919 GraphBuffer[cnt++] = 0;
920 }
921 }
922 }
923 GraphTraceLen = cnt;
924 RepaintGraphWindow();
925 return 0;
926 }
927
928 int CmdBuffClear(const char *Cmd)
929 {
930 UsbCommand c = {CMD_BUFF_CLEAR, {0,0,0}};
931 SendCommand(&c);
932 ClearGraph(true);
933 return 0;
934 }
935
936 int CmdDec(const char *Cmd)
937 {
938 for (int i = 0; i < (GraphTraceLen >> 2); ++i)
939 GraphBuffer[i] = GraphBuffer[i * 2];
940
941 GraphTraceLen >>= 2;
942 PrintAndLog("decimated by 2");
943 RepaintGraphWindow();
944 return 0;
945 }
946 /**
947 * Undecimate - I'd call it 'interpolate', but we'll save that
948 * name until someone does an actual interpolation command, not just
949 * blindly repeating samples
950 * @param Cmd
951 * @return
952 */
953 int CmdUndec(const char *Cmd)
954 {
955 char cmdp = param_getchar(Cmd, 0);
956 if (cmdp == 'h' || cmdp == 'H')
957 return usage_data_undecimate();
958
959 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
960
961 //We have memory, don't we?
962 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
963 uint32_t g_index = 0 ,s_index = 0;
964 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
965 {
966 int count = 0;
967 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
968 swap[s_index+count] = GraphBuffer[g_index];
969 s_index += count;
970 g_index++;
971 }
972
973 memcpy(GraphBuffer, swap, s_index * sizeof(int));
974 GraphTraceLen = s_index;
975 RepaintGraphWindow();
976 return 0;
977 }
978
979 //by marshmellow
980 //shift graph zero up or down based on input + or -
981 int CmdGraphShiftZero(const char *Cmd)
982 {
983 int shift = 0, shiftedVal = 0;
984 //set options from parameters entered with the command
985 sscanf(Cmd, "%i", &shift);
986
987 for(int i = 0; i<GraphTraceLen; i++){
988 shiftedVal=GraphBuffer[i]+shift;
989 if (shiftedVal > 127)
990 shiftedVal = 127;
991 else if (shiftedVal < -127)
992 shiftedVal = -127;
993 GraphBuffer[i] = shiftedVal;
994 }
995 CmdNorm("");
996 return 0;
997 }
998
999 //by marshmellow
1000 //use large jumps in read samples to identify edges of waves and then amplify that wave to max
1001 //similar to dirtheshold, threshold commands
1002 //takes a threshold length which is the measured length between two samples then determines an edge
1003 int CmdAskEdgeDetect(const char *Cmd)
1004 {
1005 int thresLen = 25;
1006 int last = 0;
1007 sscanf(Cmd, "%i", &thresLen);
1008
1009 for(int i = 1; i < GraphTraceLen; ++i){
1010 if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
1011 last = 127;
1012 else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
1013 last = -127;
1014
1015 GraphBuffer[i-1] = last;
1016 }
1017 RepaintGraphWindow();
1018 return 0;
1019 }
1020
1021 /* Print our clock rate */
1022 // uses data from graphbuffer
1023 // adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
1024 int CmdDetectClockRate(const char *Cmd)
1025 {
1026 char cmdp = param_getchar(Cmd, 0);
1027 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H')
1028 return usage_data_detectclock();
1029
1030 int ans = 0;
1031 switch ( cmdp ) {
1032 case 'a' :
1033 case 'A' :
1034 ans = GetAskClock(Cmd+1, true, false);
1035 break;
1036 case 'f' :
1037 case 'F' :
1038 ans = GetFskClock("", true, false);
1039 break;
1040 case 'n' :
1041 case 'N' :
1042 ans = GetNrzClock("", true, false);
1043 break;
1044 case 'p' :
1045 case 'P' :
1046 ans = GetPskClock("", true, false);
1047 break;
1048 default :
1049 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
1050 break;
1051 }
1052 return ans;
1053 }
1054
1055 char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
1056 {
1057 static char fType[8];
1058 memset(fType, 0x00, 8);
1059 char *fskType = fType;
1060 if (fchigh==10 && fclow==8){
1061 if (invert) //fsk2a
1062 memcpy(fskType, "FSK2a", 5);
1063 else //fsk2
1064 memcpy(fskType, "FSK2", 4);
1065 } else if (fchigh == 8 && fclow == 5) {
1066 if (invert)
1067 memcpy(fskType, "FSK1", 4);
1068 else
1069 memcpy(fskType, "FSK1a", 5);
1070 } else {
1071 memcpy(fskType, "FSK??", 5);
1072 }
1073 return fskType;
1074 }
1075
1076 //by marshmellow
1077 //fsk raw demod and print binary
1078 //takes 4 arguments - Clock, invert, fchigh, fclow
1079 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1080 int FSKrawDemod(const char *Cmd, bool verbose)
1081 {
1082 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1083 uint8_t rfLen, invert, fchigh, fclow;
1084
1085 //set defaults
1086 //set options from parameters entered with the command
1087 rfLen = param_get8(Cmd, 0);
1088 invert = param_get8(Cmd, 1);
1089 fchigh = param_get8(Cmd, 2);
1090 fclow = param_get8(Cmd, 3);
1091 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
1092 if (rfLen==1) {
1093 invert = 1; //if invert option only is used
1094 rfLen = 0;
1095 }
1096 }
1097
1098 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1099 size_t BitLen = getFromGraphBuf(BitStream);
1100 if (BitLen==0) return 0;
1101 //get field clock lengths
1102 uint16_t fcs=0;
1103 if (!fchigh || !fclow) {
1104 fcs = countFC(BitStream, BitLen, 1);
1105 if (!fcs) {
1106 fchigh = 10;
1107 fclow = 8;
1108 } else {
1109 fchigh = (fcs >> 8) & 0x00FF;
1110 fclow = fcs & 0x00FF;
1111 }
1112 }
1113 //get bit clock length
1114 if (!rfLen) {
1115 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
1116 if (!rfLen) rfLen = 50;
1117 }
1118 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
1119 if (size > 0) {
1120 setDemodBuf(BitStream, size, 0);
1121
1122 // Now output the bitstream to the scrollback by line of 16 bits
1123 if (verbose || g_debugMode) {
1124 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
1125 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
1126 printDemodBuff();
1127 }
1128
1129 return 1;
1130 } else {
1131 if (g_debugMode) PrintAndLog("no FSK data found");
1132 }
1133 return 0;
1134 }
1135
1136 //by marshmellow
1137 //fsk raw demod and print binary
1138 //takes 4 arguments - Clock, invert, fchigh, fclow
1139 //defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1140 int CmdFSKrawdemod(const char *Cmd)
1141 {
1142 char cmdp = param_getchar(Cmd, 0);
1143 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1144 return usage_data_rawdemod_fs();
1145
1146 return FSKrawDemod(Cmd, TRUE);
1147 }
1148
1149 //by marshmellow (based on existing demod + holiman's refactor)
1150 //HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1151 //print full HID Prox ID and some bit format details if found
1152 int CmdFSKdemodHID(const char *Cmd)
1153 {
1154 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1155 uint32_t hi2=0, hi=0, lo=0;
1156
1157 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1158 size_t BitLen = getFromGraphBuf(BitStream);
1159 if (BitLen==0) return 0;
1160 //get binary from fsk wave
1161 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1162 if (idx<0){
1163 if (g_debugMode){
1164 if (idx==-1){
1165 PrintAndLog("DEBUG: Error - HID just noise detected");
1166 } else if (idx == -2) {
1167 PrintAndLog("DEBUG: Error - HID problem during FSK demod");
1168 } else if (idx == -3) {
1169 PrintAndLog("DEBUG: Error - HID preamble not found");
1170 } else if (idx == -4) {
1171 PrintAndLog("DEBUG: Error - HID error in Manchester data, SIZE: %d", BitLen);
1172 } else {
1173 PrintAndLog("DEBUG: Error - HID error demoding fsk %d", idx);
1174 }
1175 }
1176 return 0;
1177 }
1178 if (hi2==0 && hi==0 && lo==0) {
1179 if (g_debugMode) PrintAndLog("DEBUG: Error - HID no values found");
1180 return 0;
1181 }
1182 if (hi2 != 0){ //extra large HID tags
1183 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1184 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1185 }
1186 else { //standard HID tags <38 bits
1187 uint8_t fmtLen = 0;
1188 uint32_t fc = 0;
1189 uint32_t cardnum = 0;
1190 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1191 uint32_t lo2=0;
1192 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1193 uint8_t idx3 = 1;
1194 while(lo2>1){ //find last bit set to 1 (format len bit)
1195 lo2=lo2>>1;
1196 idx3++;
1197 }
1198 fmtLen =idx3+19;
1199 fc =0;
1200 cardnum=0;
1201 if(fmtLen==26){
1202 cardnum = (lo>>1)&0xFFFF;
1203 fc = (lo>>17)&0xFF;
1204 }
1205 if(fmtLen==34){
1206 cardnum = (lo>>1)&0xFFFF;
1207 fc= ((hi&1)<<15)|(lo>>17);
1208 }
1209 if(fmtLen==35){
1210 cardnum = (lo>>1)&0xFFFFF;
1211 fc = ((hi&1)<<11)|(lo>>21);
1212 }
1213 }
1214 else { //if bit 38 is not set then 37 bit format is used
1215 fmtLen = 37;
1216 fc = 0;
1217 cardnum = 0;
1218 if(fmtLen == 37){
1219 cardnum = (lo>>1)&0x7FFFF;
1220 fc = ((hi&0xF)<<12)|(lo>>20);
1221 }
1222 }
1223 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1224 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1225 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1226 }
1227 setDemodBuf(BitStream,BitLen,idx);
1228 if (g_debugMode){
1229 PrintAndLog("DEBUG: HID idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1230 printDemodBuff();
1231 }
1232 return 1;
1233 }
1234
1235 //by marshmellow
1236 //Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
1237 //print full Paradox Prox ID and some bit format details if found
1238 int CmdFSKdemodParadox(const char *Cmd)
1239 {
1240 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1241 uint32_t hi2=0, hi=0, lo=0;
1242
1243 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1244 size_t BitLen = getFromGraphBuf(BitStream);
1245 if (BitLen==0) return 0;
1246 //get binary from fsk wave
1247 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1248 if (idx<0){
1249 if (g_debugMode){
1250 if (idx==-1){
1251 PrintAndLog("DEBUG: Error - Paradox just noise detected");
1252 } else if (idx == -2) {
1253 PrintAndLog("DEBUG: Error - Paradox error demoding fsk");
1254 } else if (idx == -3) {
1255 PrintAndLog("DEBUG: Error - Paradox preamble not found");
1256 } else if (idx == -4) {
1257 PrintAndLog("DEBUG: Error - Paradox error in Manchester data");
1258 } else {
1259 PrintAndLog("DEBUG: Error - Paradox error demoding fsk %d", idx);
1260 }
1261 }
1262 return 0;
1263 }
1264 if (hi2==0 && hi==0 && lo==0){
1265 if (g_debugMode) PrintAndLog("DEBUG: Error - Paradox no value found");
1266 return 0;
1267 }
1268 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1269 uint32_t cardnum = (lo>>10)&0xFFFF;
1270 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1271 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1272 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1273
1274 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1275 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1276 setDemodBuf(BitStream,BitLen,idx);
1277 if (g_debugMode){
1278 PrintAndLog("DEBUG: Paradox idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1279 printDemodBuff();
1280 }
1281 return 1;
1282 }
1283
1284 //by marshmellow
1285 //IO-Prox demod - FSK RF/64 with preamble of 000000001
1286 //print ioprox ID and some format details
1287 int CmdFSKdemodIO(const char *Cmd)
1288 {
1289 int retval = 0;
1290 int idx = 0;
1291 char crcStr[20];
1292 memset(crcStr, 0x00, sizeof(crcStr) );
1293
1294 //something in graphbuffer?
1295 if (GraphTraceLen < 65) {
1296 if (g_debugMode)PrintAndLog("DEBUG: Error - IO prox not enough samples in GraphBuffer");
1297 return retval;
1298 }
1299 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1300 size_t bitlen = getFromGraphBuf(BitStream);
1301 if (bitlen == 0) return retval;
1302
1303 //get binary from fsk wave
1304 idx = IOdemodFSK(BitStream, bitlen);
1305 if (idx<0){
1306 if (g_debugMode){
1307 if (idx==-1){
1308 PrintAndLog("DEBUG: Error - IO prox just noise detected");
1309 } else if (idx == -2) {
1310 PrintAndLog("DEBUG: Error - IO prox not enough samples");
1311 } else if (idx == -3) {
1312 PrintAndLog("DEBUG: Error - IO prox error during fskdemod");
1313 } else if (idx == -4) {
1314 PrintAndLog("DEBUG: Error - IO prox preamble not found");
1315 } else if (idx == -5) {
1316 PrintAndLog("DEBUG: Error - IO prox separator bits not found");
1317 } else {
1318 PrintAndLog("DEBUG: Error - IO prox error demoding fsk %d", idx);
1319 }
1320 }
1321 return retval;
1322 }
1323 if (idx==0){
1324 if (g_debugMode){
1325 PrintAndLog("DEBUG: Error - IO prox data not found - FSK Bits: %d", bitlen);
1326 if (bitlen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
1327 }
1328 return retval;
1329 }
1330 //Index map
1331 //0 10 20 30 40 50 60
1332 //| | | | | | |
1333 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1334 //-----------------------------------------------------------------------------
1335 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1336 //
1337 //XSF(version)facility:codeone+codetwo (raw)
1338 //Handle the data
1339 if (idx + 64 > bitlen) {
1340 if (g_debugMode) PrintAndLog("DEBUG: Error - IO prox not enough bits found - bitlen: %d", bitlen);
1341 return retval;
1342 }
1343
1344 if (g_debugMode) {
1345 PrintAndLog("%d%d%d%d%d%d%d%d %d", BitStream[idx], BitStream[idx+1], BitStream[idx+2], BitStream[idx+3], BitStream[idx+4], BitStream[idx+5], BitStream[idx+6], BitStream[idx+7], BitStream[idx+8]);
1346 PrintAndLog("%d%d%d%d%d%d%d%d %d", BitStream[idx+9], BitStream[idx+10], BitStream[idx+11],BitStream[idx+12],BitStream[idx+13],BitStream[idx+14],BitStream[idx+15],BitStream[idx+16],BitStream[idx+17]);
1347 PrintAndLog("%d%d%d%d%d%d%d%d %d facility", BitStream[idx+18], BitStream[idx+19], BitStream[idx+20],BitStream[idx+21],BitStream[idx+22],BitStream[idx+23],BitStream[idx+24],BitStream[idx+25],BitStream[idx+26]);
1348 PrintAndLog("%d%d%d%d%d%d%d%d %d version", BitStream[idx+27], BitStream[idx+28], BitStream[idx+29],BitStream[idx+30],BitStream[idx+31],BitStream[idx+32],BitStream[idx+33],BitStream[idx+34],BitStream[idx+35]);
1349 PrintAndLog("%d%d%d%d%d%d%d%d %d code1", BitStream[idx+36], BitStream[idx+37], BitStream[idx+38],BitStream[idx+39],BitStream[idx+40],BitStream[idx+41],BitStream[idx+42],BitStream[idx+43],BitStream[idx+44]);
1350 PrintAndLog("%d%d%d%d%d%d%d%d %d code2", BitStream[idx+45], BitStream[idx+46], BitStream[idx+47],BitStream[idx+48],BitStream[idx+49],BitStream[idx+50],BitStream[idx+51],BitStream[idx+52],BitStream[idx+53]);
1351 PrintAndLog("%d%d%d%d%d%d%d%d %d%d checksum", BitStream[idx+54],BitStream[idx+55],BitStream[idx+56],BitStream[idx+57],BitStream[idx+58],BitStream[idx+59],BitStream[idx+60],BitStream[idx+61],BitStream[idx+62],BitStream[idx+63]);
1352 }
1353
1354 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1355 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1356 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1357 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1358 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1359 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1360 uint16_t calccrc = 0;
1361
1362 for (uint8_t i = 1; i < 6; ++i){
1363 calccrc += bytebits_to_byte(BitStream + idx + 9 * i ,8);
1364 }
1365 calccrc &= 0xff;
1366 calccrc = 0xff - calccrc;
1367
1368 if (crc == calccrc) {
1369 snprintf(crcStr, 3, "ok");
1370 retval = 1;
1371 } else {
1372 if (g_debugMode) PrintAndLog("DEBUG: Error - IO prox crc failed");
1373
1374 snprintf(crcStr, 20, "failed 0x%02X != 0x%02X", crc, calccrc);
1375 retval = 0;
1376 }
1377
1378 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [crc %s]",version,facilitycode,number,code,code2, crcStr);
1379 setDemodBuf(BitStream,64,idx);
1380 if (g_debugMode){
1381 PrintAndLog("DEBUG: IO prox idx: %d, Len: %d, Printing demod buffer:", idx, 64);
1382 printDemodBuff();
1383 }
1384 return retval;
1385 }
1386
1387 //by marshmellow
1388 //AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1389 //print full AWID Prox ID and some bit format details if found
1390 int CmdFSKdemodAWID(const char *Cmd)
1391 {
1392 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1393 size_t size = getFromGraphBuf(BitStream);
1394 if (size==0) return 0;
1395
1396 //get binary from fsk wave
1397 int idx = AWIDdemodFSK(BitStream, &size);
1398 if (idx<=0){
1399 if (g_debugMode){
1400 if (idx == -1)
1401 PrintAndLog("DEBUG: Error - AWID not enough samples");
1402 else if (idx == -2)
1403 PrintAndLog("DEBUG: Error - AWID only noise found");
1404 else if (idx == -3)
1405 PrintAndLog("DEBUG: Error - AWID problem during FSK demod");
1406 else if (idx == -4)
1407 PrintAndLog("DEBUG: Error - AWID preamble not found");
1408 else if (idx == -5)
1409 PrintAndLog("DEBUG: Error - AWID size not correct: %d", size);
1410 else
1411 PrintAndLog("DEBUG: Error - AWID error %d",idx);
1412 }
1413 return 0;
1414 }
1415
1416 // Index map
1417 // 0 10 20 30 40 50 60
1418 // | | | | | | |
1419 // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
1420 // -----------------------------------------------------------------------------
1421 // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
1422 // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
1423 // |---26 bit---| |-----117----||-------------142-------------|
1424 // b = format bit len, o = odd parity of last 3 bits
1425 // f = facility code, c = card number
1426 // w = wiegand parity
1427 // (26 bit format shown)
1428
1429 //get raw ID before removing parities
1430 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1431 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1432 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1433 setDemodBuf(BitStream,96,idx);
1434
1435 size = removeParity(BitStream, idx+8, 4, 1, 88);
1436 if (size != 66){
1437 if (g_debugMode) PrintAndLog("DEBUG: Error - AWID at parity check-tag size does not match AWID format");
1438 return 0;
1439 }
1440 // ok valid card found!
1441
1442 // Index map
1443 // 0 10 20 30 40 50 60
1444 // | | | | | | |
1445 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1446 // -----------------------------------------------------------------------------
1447 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1448 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1449 // |26 bit| |-117--| |-----142------|
1450 //
1451 // 00110010 0 0000111110100000 00000000000100010010100010000111 1 000000000
1452 // bbbbbbbb w ffffffffffffffff cccccccccccccccccccccccccccccccc w xxxxxxxxx
1453 // |50 bit| |----4000------| |-----------2248975------------|
1454 // b = format bit len, o = odd parity of last 3 bits
1455 // f = facility code, c = card number
1456 // w = wiegand parity
1457
1458 uint32_t fc = 0;
1459 uint32_t cardnum = 0;
1460 uint32_t code1 = 0;
1461 uint32_t code2 = 0;
1462 uint8_t fmtLen = bytebits_to_byte(BitStream, 8);
1463 switch(fmtLen) {
1464 case 26:
1465 fc = bytebits_to_byte(BitStream + 9, 8);
1466 cardnum = bytebits_to_byte(BitStream + 17, 16);
1467 code1 = bytebits_to_byte(BitStream + 8,fmtLen);
1468 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
1469 break;
1470 case 50:
1471 fc = bytebits_to_byte(BitStream + 9, 16);
1472 cardnum = bytebits_to_byte(BitStream + 25, 32);
1473 code1 = bytebits_to_byte(BitStream + 8, (fmtLen-32) );
1474 code2 = bytebits_to_byte(BitStream + 8 + (fmtLen-32), 32);
1475 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1476 break;
1477 default:
1478 if (fmtLen > 32 ) {
1479 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1480 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1481 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
1482 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
1483 } else {
1484 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1485 code1 = bytebits_to_byte(BitStream+8,fmtLen);
1486 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
1487 }
1488 break;
1489 }
1490
1491 if (g_debugMode){
1492 PrintAndLog("DEBUG: AWID idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1493 printDemodBuff();
1494 }
1495 return 1;
1496 }
1497
1498 //by marshmellow
1499 //Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1500 //print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1501 int CmdFSKdemodPyramid(const char *Cmd)
1502 {
1503 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1504 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1505 size_t size = getFromGraphBuf(BitStream);
1506 if (size==0) return 0;
1507
1508 //get binary from fsk wave
1509 int idx = PyramiddemodFSK(BitStream, &size);
1510 if (idx < 0){
1511 if (g_debugMode){
1512 if (idx == -5)
1513 PrintAndLog("DEBUG: Error - Pyramid: not enough samples");
1514 else if (idx == -1)
1515 PrintAndLog("DEBUG: Error - Pyramid: only noise found");
1516 else if (idx == -2)
1517 PrintAndLog("DEBUG: Error - Pyramid: problem during FSK demod");
1518 else if (idx == -3)
1519 PrintAndLog("DEBUG: Error - Pyramid: size not correct: %d", size);
1520 else if (idx == -4)
1521 PrintAndLog("DEBUG: Error - Pyramid: preamble not found");
1522 else
1523 PrintAndLog("DEBUG: Error - Pyramid: idx: %d",idx);
1524 }
1525 return 0;
1526 }
1527 // Index map
1528 // 0 10 20 30 40 50 60
1529 // | | | | | | |
1530 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1531 // -----------------------------------------------------------------------------
1532 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1533 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1534
1535 // 64 70 80 90 100 110 120
1536 // | | | | | | |
1537 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1538 // -----------------------------------------------------------------------------
1539 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1540 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1541 // |---115---||---------71---------|
1542 // s = format start bit, o = odd parity of last 7 bits
1543 // f = facility code, c = card number
1544 // w = wiegand parity, x = extra space for other formats
1545 // p = CRC8maxim checksum
1546 // (26 bit format shown)
1547
1548 //get bytes for checksum calc
1549 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1550 uint8_t csBuff[14] = {0x00};
1551 for (uint8_t i = 0; i < 13; i++){
1552 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1553 }
1554 //check checksum calc
1555 //checksum calc thanks to ICEMAN!!
1556 uint32_t checkCS = CRC8Maxim(csBuff, 13);
1557
1558 //get raw ID before removing parities
1559 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96, 32);
1560 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64, 32);
1561 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32, 32);
1562 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx, 32);
1563 setDemodBuf(BitStream, 128, idx);
1564
1565 size = removeParity(BitStream, idx+8, 8, 1, 120);
1566 if (size != 105){
1567 if (g_debugMode) {
1568 if ( size == 0)
1569 PrintAndLog("DEBUG: Error - Pyramid: parity check failed - IDX: %d, hi3: %08X", idx, rawHi3);
1570 else
1571 PrintAndLog("DEBUG: Error - Pyramid: at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %08X", size, idx, rawHi3);
1572 }
1573 return 0;
1574 }
1575
1576 // ok valid card found!
1577
1578 // Index map
1579 // 0 10 20 30 40 50 60 70
1580 // | | | | | | | |
1581 // 01234567890123456789012345678901234567890123456789012345678901234567890
1582 // -----------------------------------------------------------------------
1583 // 00000000000000000000000000000000000000000000000000000000000000000000000
1584 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1585
1586 // 71 80 90 100
1587 // | | | |
1588 // 1 2 34567890 1234567890123456 7 8901234
1589 // ---------------------------------------
1590 // 1 1 01110011 0000000001000110 0 1001010
1591 // s w ffffffff cccccccccccccccc w ppppppp
1592 // |--115-| |------71------|
1593 // s = format start bit, o = odd parity of last 7 bits
1594 // f = facility code, c = card number
1595 // w = wiegand parity, x = extra space for other formats
1596 // p = CRC8-Maxim checksum
1597 // (26 bit format shown)
1598
1599 //find start bit to get fmtLen
1600 int j;
1601 for (j=0; j < size; ++j){
1602 if(BitStream[j]) break;
1603 }
1604
1605 uint8_t fmtLen = size-j-8;
1606 uint32_t fc = 0;
1607 uint32_t cardnum = 0;
1608 uint32_t code1 = 0;
1609
1610 if ( fmtLen == 26 ){
1611 fc = bytebits_to_byte(BitStream+73, 8);
1612 cardnum = bytebits_to_byte(BitStream+81, 16);
1613 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1614 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
1615 } else if (fmtLen == 45) {
1616 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
1617 fc = bytebits_to_byte(BitStream+53, 10);
1618 cardnum = bytebits_to_byte(BitStream+63, 32);
1619 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1620 } else {
1621 cardnum = bytebits_to_byte(BitStream+81, 16);
1622 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1623 }
1624 if (checksum == checkCS)
1625 PrintAndLog("Checksum %02x passed", checksum);
1626 else
1627 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1628
1629 if (g_debugMode){
1630 PrintAndLog("DEBUG: Pyramid: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1631 printDemodBuff();
1632 }
1633 return 1;
1634 }
1635
1636 // FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
1637 // 8 databits + 1 parity (1)
1638 // CIITT 16 chksum
1639 // NATIONAL CODE, ICAR database
1640 // COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
1641 // FLAG (animal/non-animal)
1642 /*
1643 38 IDbits
1644 10 country code
1645 1 extra app bit
1646 14 reserved bits
1647 1 animal bit
1648 16 ccitt CRC chksum over 64bit ID CODE.
1649 24 appli bits.
1650
1651 -- sample: 985121004515220 [ 37FF65B88EF94 ]
1652 */
1653 int CmdFDXBdemodBI(const char *Cmd){
1654
1655 int invert = 1;
1656 int clk = 32;
1657 int errCnt = 0;
1658 int maxErr = 0;
1659 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1660 size_t size = getFromGraphBuf(BitStream);
1661
1662 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1663 if ( errCnt < 0 || errCnt > maxErr ) {
1664 if (g_debugMode) PrintAndLog("DEBUG: Error - FDXB no data or error found %d, clock: %d", errCnt, clk);
1665 return 0;
1666 }
1667
1668 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1669 if (errCnt < 0 || errCnt > maxErr ) {
1670 if (g_debugMode) PrintAndLog("DEBUG: Error - FDXB BiphaseRawDecode: %d", errCnt);
1671 return 0;
1672 }
1673
1674 int preambleIndex = FDXBdemodBI(BitStream, &size);
1675 if (preambleIndex < 0){
1676 if (g_debugMode) PrintAndLog("DEBUG: Error - FDXB preamble not found :: %d",preambleIndex);
1677 return 0;
1678 }
1679 if (size != 128) {
1680 if (g_debugMode) PrintAndLog("DEBUG: Error - FDXB incorrect data length found");
1681 return 0;
1682 }
1683
1684 setDemodBuf(BitStream, 128, preambleIndex);
1685
1686 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
1687 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
1688 if ( size != 104 ) {
1689 if (g_debugMode) PrintAndLog("DEBUG: Error - FDXB error removeParity:: %d", size);
1690 return 0;
1691 }
1692 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
1693
1694 //got a good demod
1695 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1696 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1697 uint8_t dataBlockBit = BitStream[48];
1698 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1699 uint8_t animalBit = BitStream[63];
1700 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
1701 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1702
1703 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
1704 uint8_t raw[8];
1705 num_to_bytes(rawid, 8, raw);
1706
1707 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1708
1709 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1710 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
1711 PrintAndLog("National Code: %012llu", NationalCode);
1712 PrintAndLog("CountryCode: %04u", countryCode);
1713
1714 PrintAndLog("Reserved/RFU: %u", reservedCode);
1715 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
1716 PrintAndLog("Has extended data: %s [0x%X]", dataBlockBit ? "True" : "False", extended);
1717 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1718
1719 if (g_debugMode) {
1720 PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
1721 char *bin = sprint_bin_break(BitStream,size,16);
1722 PrintAndLog("DEBUG BinStream:\n%s",bin);
1723 }
1724 return 1;
1725 }
1726
1727
1728 //by marshmellow
1729 //attempt to psk1 demod graph buffer
1730 int PSKDemod(const char *Cmd, bool verbose)
1731 {
1732 int invert=0;
1733 int clk=0;
1734 int maxErr=100;
1735 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1736 if (clk==1){
1737 invert=1;
1738 clk=0;
1739 }
1740 if (invert != 0 && invert != 1) {
1741 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
1742 return 0;
1743 }
1744 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1745 size_t BitLen = getFromGraphBuf(BitStream);
1746 if (BitLen==0) return 0;
1747 uint8_t carrier=countFC(BitStream, BitLen, 0);
1748 if (carrier!=2 && carrier!=4 && carrier!=8){
1749 //invalid carrier
1750 return 0;
1751 }
1752 if (g_debugMode){
1753 PrintAndLog("Carrier: rf/%d",carrier);
1754 }
1755 int errCnt=0;
1756 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1757 if (errCnt > maxErr){
1758 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1759 return 0;
1760 }
1761 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1762 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1763 return 0;
1764 }
1765 if (verbose || g_debugMode){
1766 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
1767 if (errCnt>0){
1768 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1769 }
1770 }
1771 //prime demod buffer for output
1772 setDemodBuf(BitStream,BitLen,0);
1773 return 1;
1774 }
1775
1776 // Indala 26 bit decode
1777 // by marshmellow
1778 // optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1779 int CmdIndalaDecode(const char *Cmd)
1780 {
1781 int ans;
1782 if (strlen(Cmd)>0){
1783 ans = PSKDemod(Cmd, 0);
1784 } else{ //default to RF/32
1785 ans = PSKDemod("32", 0);
1786 }
1787
1788 if (!ans){
1789 if (g_debugMode) PrintAndLog("DEBUG: Error - Indala can't demod signal: %d",ans);
1790 return 0;
1791 }
1792
1793 uint8_t invert = 0;
1794 size_t size = DemodBufferLen;
1795 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1796 if (startIdx < 0 || size > 224) {
1797 if (g_debugMode) PrintAndLog("DEBUG: Error - Indala wrong size, expected [64|224] got: %d", size);
1798 return -1;
1799 }
1800 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
1801 if (invert)
1802 if (g_debugMode) PrintAndLog("DEBUG: Error - Indala had to invert bits");
1803
1804 PrintAndLog("BitLen: %d",DemodBufferLen);
1805 //convert UID to HEX
1806 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
1807 uid1 = bytebits_to_byte(DemodBuffer,32);
1808 uid2 = bytebits_to_byte(DemodBuffer+32,32);
1809 if (DemodBufferLen==64){
1810 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
1811 } else {
1812 uid3 = bytebits_to_byte(DemodBuffer+64,32);
1813 uid4 = bytebits_to_byte(DemodBuffer+96,32);
1814 uid5 = bytebits_to_byte(DemodBuffer+128,32);
1815 uid6 = bytebits_to_byte(DemodBuffer+160,32);
1816 uid7 = bytebits_to_byte(DemodBuffer+192,32);
1817 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
1818 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
1819 }
1820 if (g_debugMode){
1821 PrintAndLog("DEBUG: Indala - printing demodbuffer:");
1822 printDemodBuff();
1823 }
1824 return 1;
1825 }
1826
1827 int CmdPSKNexWatch(const char *Cmd)
1828 {
1829 if (!PSKDemod("", false)) return 0;
1830
1831 uint8_t preamble[28] = {0,0,0,0,0,1,0,1,0,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
1832 size_t startIdx = 0, size = DemodBufferLen;
1833
1834 // sanity check.
1835 if ( size < sizeof(preamble) + 100) return 0;
1836
1837 bool invert = false;
1838 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1839 // if didn't find preamble try again inverting
1840 if (!PSKDemod("1", false)) return 0;
1841
1842 size = DemodBufferLen;
1843 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1844 invert = true;
1845 }
1846 if (size != 128) return 0;
1847 setDemodBuf(DemodBuffer, size, startIdx+4);
1848 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1849 //get ID
1850 uint32_t ID = 0;
1851 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1852 for (uint8_t idx=0; idx<8; idx++){
1853 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1854 }
1855 }
1856 //parity check (TBD)
1857
1858 //checksum check (TBD)
1859
1860 //output
1861 PrintAndLog("NexWatch ID: %d", ID);
1862 if (invert){
1863 PrintAndLog("DEBUG: Error - NexWatch had to Invert - probably NexKey");
1864 for (uint8_t idx=0; idx<size; idx++)
1865 DemodBuffer[idx] ^= 1;
1866 }
1867
1868 CmdPrintDemodBuff("x");
1869 return 1;
1870 }
1871
1872 // by marshmellow
1873 // takes 3 arguments - clock, invert, maxErr as integers
1874 // attempts to demodulate nrz only
1875 // prints binary found and saves in demodbuffer for further commands
1876 int NRZrawDemod(const char *Cmd, bool verbose)
1877 {
1878 int invert=0;
1879 int clk=0;
1880 int maxErr=100;
1881 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1882 if (clk==1){
1883 invert=1;
1884 clk=0;
1885 }
1886 if (invert != 0 && invert != 1) {
1887 PrintAndLog("Invalid argument: %s", Cmd);
1888 return 0;
1889 }
1890 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1891 size_t BitLen = getFromGraphBuf(BitStream);
1892 if (BitLen==0) return 0;
1893 int errCnt=0;
1894 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
1895 if (errCnt > maxErr){
1896 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1897 return 0;
1898 }
1899 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
1900 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1901 return 0;
1902 }
1903 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1904 //prime demod buffer for output
1905 setDemodBuf(BitStream,BitLen,0);
1906
1907 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1908 if (verbose || g_debugMode) {
1909 PrintAndLog("NRZ demoded bitstream:");
1910 // Now output the bitstream to the scrollback by line of 16 bits
1911 printDemodBuff();
1912 }
1913 return 1;
1914 }
1915
1916 int CmdNRZrawDemod(const char *Cmd)
1917 {
1918 char cmdp = param_getchar(Cmd, 0);
1919 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1920 return usage_data_rawdemod_nr();
1921
1922 return NRZrawDemod(Cmd, TRUE);
1923 }
1924
1925 // by marshmellow
1926 // takes 3 arguments - clock, invert, maxErr as integers
1927 // attempts to demodulate psk only
1928 // prints binary found and saves in demodbuffer for further commands
1929 int CmdPSK1rawDemod(const char *Cmd)
1930 {
1931 int ans;
1932 char cmdp = param_getchar(Cmd, 0);
1933 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1934 return usage_data_rawdemod_p1();
1935
1936 ans = PSKDemod(Cmd, TRUE);
1937 //output
1938 if (!ans){
1939 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1940 return 0;
1941 }
1942 PrintAndLog("PSK1 demoded bitstream:");
1943 // Now output the bitstream to the scrollback by line of 16 bits
1944 printDemodBuff();
1945 return 1;
1946 }
1947
1948 // by marshmellow
1949 // takes same args as cmdpsk1rawdemod
1950 int CmdPSK2rawDemod(const char *Cmd)
1951 {
1952 int ans = 0;
1953 char cmdp = param_getchar(Cmd, 0);
1954 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1955 return usage_data_rawdemod_p2();
1956
1957 ans = PSKDemod(Cmd, TRUE);
1958 if (!ans){
1959 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1960 return 0;
1961 }
1962 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1963 PrintAndLog("PSK2 demoded bitstream:");
1964 // Now output the bitstream to the scrollback by line of 16 bits
1965 printDemodBuff();
1966 return 1;
1967 }
1968
1969 // by marshmellow - combines all raw demod functions into one menu command
1970 int CmdRawDemod(const char *Cmd)
1971 {
1972 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
1973 char cmdp2 = Cmd[1];
1974 int ans = 0;
1975
1976 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd) < 2)
1977 return usage_data_rawdemod();
1978
1979 if (cmdp == 'f' && cmdp2 == 's')
1980 ans = CmdFSKrawdemod(Cmd+2);
1981 else if(cmdp == 'a' && cmdp2 == 'b')
1982 ans = Cmdaskbiphdemod(Cmd+2);
1983 else if(cmdp == 'a' && cmdp2 == 'm')
1984 ans = Cmdaskmandemod(Cmd+2);
1985 else if(cmdp == 'a' && cmdp2 == 'r')
1986 ans = Cmdaskrawdemod(Cmd+2);
1987 else if(cmdp == 'n' && cmdp2 == 'r')
1988 ans = CmdNRZrawDemod(Cmd+2);
1989 else if(cmdp == 'p' && cmdp2 == '1')
1990 ans = CmdPSK1rawDemod(Cmd+2);
1991 else if(cmdp == 'p' && cmdp2 == '2')
1992 ans = CmdPSK2rawDemod(Cmd+2);
1993 else
1994 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
1995
1996 return ans;
1997 }
1998 //iceman: diff sizes on the plotwindow?
1999 int CmdGrid(const char *Cmd)
2000 {
2001 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
2002 PlotGridXdefault = PlotGridX;
2003 PlotGridYdefault = PlotGridY;
2004 RepaintGraphWindow();
2005 return 0;
2006 }
2007
2008 int CmdHexsamples(const char *Cmd)
2009 {
2010 int i, j;
2011 int requested = 0;
2012 int offset = 0;
2013 char string_buf[25];
2014 char* string_ptr = string_buf;
2015 uint8_t got[BIGBUF_SIZE];
2016
2017 sscanf(Cmd, "%i %i", &requested, &offset);
2018
2019 /* if no args send something */
2020 if (requested == 0) {
2021 requested = 8;
2022 }
2023 if (offset + requested > sizeof(got)) {
2024 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
2025 return 0;
2026 }
2027
2028 GetFromBigBuf(got,requested,offset);
2029 WaitForResponse(CMD_ACK,NULL);
2030
2031 i = 0;
2032 for (j = 0; j < requested; j++) {
2033 i++;
2034 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
2035 if (i == 8) {
2036 *(string_ptr - 1) = '\0'; // remove the trailing space
2037 PrintAndLog("%s", string_buf);
2038 string_buf[0] = '\0';
2039 string_ptr = string_buf;
2040 i = 0;
2041 }
2042 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
2043 *(string_ptr - 1) = '\0';
2044 PrintAndLog("%s", string_buf);
2045 string_buf[0] = '\0';
2046 }
2047 }
2048 return 0;
2049 }
2050
2051 int CmdHide(const char *Cmd)
2052 {
2053 HideGraphWindow();
2054 return 0;
2055 }
2056
2057 //zero mean GraphBuffer
2058 int CmdHpf(const char *Cmd)
2059 {
2060 int i;
2061 int accum = 0;
2062
2063 for (i = 10; i < GraphTraceLen; ++i)
2064 accum += GraphBuffer[i];
2065
2066 accum /= (GraphTraceLen - 10);
2067
2068 for (i = 0; i < GraphTraceLen; ++i)
2069 GraphBuffer[i] -= accum;
2070
2071 RepaintGraphWindow();
2072 return 0;
2073 }
2074
2075 bool _headBit( BitstreamOut *stream)
2076 {
2077 int bytepos = stream->position >> 3; // divide by 8
2078 int bitpos = (stream->position++) & 7; // mask out 00000111
2079 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
2080 }
2081
2082 uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
2083 {
2084 int i;
2085 uint8_t val = 0;
2086 for(i = 0 ; i < bits_per_sample; i++)
2087 val |= (_headBit(b) << (7-i));
2088
2089 return val;
2090 }
2091
2092 int getSamples(const char *Cmd, bool silent)
2093 {
2094 //If we get all but the last byte in bigbuf,
2095 // we don't have to worry about remaining trash
2096 // in the last byte in case the bits-per-sample
2097 // does not line up on byte boundaries
2098
2099 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2100
2101 int n = strtol(Cmd, NULL, 0);
2102
2103 if ( n == 0 || n > sizeof(got))
2104 n = sizeof(got);
2105
2106 if (!silent) PrintAndLog("Reading %d bytes from device memory\n", n);
2107 GetFromBigBuf(got,n,0);
2108 if (!silent) PrintAndLog("Data fetched");
2109 UsbCommand response;
2110 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2111 PrintAndLog("timeout while waiting for reply.");
2112 return 1;
2113 }
2114
2115 uint8_t bits_per_sample = 8;
2116
2117 //Old devices without this feature would send 0 at arg[0]
2118 if (response.arg[0] > 0) {
2119 sample_config *sc = (sample_config *) response.d.asBytes;
2120 if (!silent) PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
2121 bits_per_sample = sc->bits_per_sample;
2122 }
2123
2124 if (bits_per_sample < 8) {
2125 if (!silent) PrintAndLog("Unpacking...");
2126 BitstreamOut bout = { got, bits_per_sample * n, 0};
2127 int j =0;
2128 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
2129 uint8_t sample = getByte(bits_per_sample, &bout);
2130 GraphBuffer[j] = ((int) sample )- 128;
2131 }
2132 GraphTraceLen = j;
2133 if (!silent) PrintAndLog("Unpacked %d samples" , j );
2134 } else {
2135 for (int j = 0; j < n; j++) {
2136 GraphBuffer[j] = ((int)got[j]) - 128;
2137 }
2138 GraphTraceLen = n;
2139 }
2140
2141 RepaintGraphWindow();
2142 return 0;
2143 }
2144
2145 int CmdSamples(const char *Cmd)
2146 {
2147 return getSamples(Cmd, false);
2148 }
2149
2150 int CmdTuneSamples(const char *Cmd)
2151 {
2152 int timeout = 0;
2153 printf("\nMeasuring antenna characteristics, please wait...");
2154
2155 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2156 clearCommandBuffer();
2157 SendCommand(&c);
2158 UsbCommand resp;
2159 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
2160 timeout++;
2161 printf(".");
2162 if (timeout > 7) {
2163 PrintAndLog("\nNo response from Proxmark. Aborting...");
2164 return 1;
2165 }
2166 }
2167
2168 int peakv, peakf;
2169 int vLf125, vLf134, vHf;
2170 vLf125 = resp.arg[0] & 0xffff;
2171 vLf134 = resp.arg[0] >> 16;
2172 vHf = resp.arg[1] & 0xffff;;
2173 peakf = resp.arg[2] & 0xffff;
2174 peakv = resp.arg[2] >> 16;
2175 PrintAndLog("");
2176 if ( vLf125 > 0 )
2177 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2178 if ( vLf134 > 0 )
2179 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2180 if ( peakv > 0 && peakf > 0 )
2181 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2182 if ( vHf > 0 )
2183 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
2184
2185 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2186 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2187 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2188 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2189
2190 if (peakv < LF_UNUSABLE_V)
2191 PrintAndLog("# Your LF antenna is unusable.");
2192 else if (peakv < LF_MARGINAL_V)
2193 PrintAndLog("# Your LF antenna is marginal.");
2194 if (vHf < HF_UNUSABLE_V)
2195 PrintAndLog("# Your HF antenna is unusable.");
2196 else if (vHf < HF_MARGINAL_V)
2197 PrintAndLog("# Your HF antenna is marginal.");
2198
2199 if (peakv >= LF_UNUSABLE_V) {
2200 for (int i = 0; i < 256; i++) {
2201 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2202 }
2203 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2204 PrintAndLog("\n");
2205 GraphTraceLen = 256;
2206 ShowGraphWindow();
2207 RepaintGraphWindow();
2208 }
2209 return 0;
2210 }
2211
2212 int CmdLoad(const char *Cmd)
2213 {
2214 char filename[FILE_PATH_SIZE] = {0x00};
2215 int len = 0;
2216
2217 len = strlen(Cmd);
2218 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2219 memcpy(filename, Cmd, len);
2220
2221 FILE *f = fopen(filename, "r");
2222 if (!f) {
2223 PrintAndLog("couldn't open '%s'", filename);
2224 return 0;
2225 }
2226
2227 GraphTraceLen = 0;
2228 char line[80];
2229 while (fgets(line, sizeof (line), f)) {
2230 GraphBuffer[GraphTraceLen] = atoi(line);
2231 GraphTraceLen++;
2232 }
2233 if (f) {
2234 fclose(f);
2235 f = NULL;
2236 }
2237 PrintAndLog("loaded %d samples", GraphTraceLen);
2238 RepaintGraphWindow();
2239 return 0;
2240 }
2241
2242 int CmdLtrim(const char *Cmd)
2243 {
2244 int ds = atoi(Cmd);
2245
2246 if (GraphTraceLen <= 0) return 0;
2247
2248 for (int i = ds; i < GraphTraceLen; ++i)
2249 GraphBuffer[i-ds] = GraphBuffer[i];
2250
2251 GraphTraceLen -= ds;
2252 RepaintGraphWindow();
2253 return 0;
2254 }
2255
2256 // trim graph to input argument length
2257 int CmdRtrim(const char *Cmd)
2258 {
2259 int ds = atoi(Cmd);
2260 GraphTraceLen = ds;
2261 RepaintGraphWindow();
2262 return 0;
2263 }
2264
2265 int CmdNorm(const char *Cmd)
2266 {
2267 int i;
2268 int max = INT_MIN, min = INT_MAX;
2269
2270 for (i = 10; i < GraphTraceLen; ++i) {
2271 if (GraphBuffer[i] > max) max = GraphBuffer[i];
2272 if (GraphBuffer[i] < min) min = GraphBuffer[i];
2273 }
2274
2275 if (max != min) {
2276 for (i = 0; i < GraphTraceLen; ++i) {
2277 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / (max - min);
2278 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
2279 }
2280 }
2281 RepaintGraphWindow();
2282 return 0;
2283 }
2284
2285 int CmdPlot(const char *Cmd)
2286 {
2287 ShowGraphWindow();
2288 return 0;
2289 }
2290
2291 int CmdSave(const char *Cmd)
2292 {
2293 char filename[FILE_PATH_SIZE] = {0x00};
2294 int len = 0;
2295
2296 len = strlen(Cmd);
2297 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2298 memcpy(filename, Cmd, len);
2299
2300
2301 FILE *f = fopen(filename, "w");
2302 if(!f) {
2303 PrintAndLog("couldn't open '%s'", filename);
2304 return 0;
2305 }
2306 int i;
2307 for (i = 0; i < GraphTraceLen; i++) {
2308 fprintf(f, "%d\n", GraphBuffer[i]);
2309 }
2310 if (f) {
2311 fclose(f);
2312 f = NULL;
2313 }
2314 PrintAndLog("saved to '%s'", Cmd);
2315 return 0;
2316 }
2317
2318 int CmdScale(const char *Cmd)
2319 {
2320 CursorScaleFactor = atoi(Cmd);
2321 if (CursorScaleFactor == 0) {
2322 PrintAndLog("bad, can't have zero scale");
2323 CursorScaleFactor = 1;
2324 }
2325 RepaintGraphWindow();
2326 return 0;
2327 }
2328
2329 int CmdDirectionalThreshold(const char *Cmd)
2330 {
2331 int8_t upThres = param_get8(Cmd, 0);
2332 int8_t downThres = param_get8(Cmd, 1);
2333
2334 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2335
2336 int lastValue = GraphBuffer[0];
2337 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2338
2339 for (int i = 1; i < GraphTraceLen; ++i) {
2340 // Apply first threshold to samples heading up
2341 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2342 {
2343 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2344 GraphBuffer[i] = 1;
2345 }
2346 // Apply second threshold to samples heading down
2347 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2348 {
2349 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2350 GraphBuffer[i] = -1;
2351 }
2352 else
2353 {
2354 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2355 GraphBuffer[i] = GraphBuffer[i-1];
2356 }
2357 }
2358 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2359 RepaintGraphWindow();
2360 return 0;
2361 }
2362
2363 int CmdZerocrossings(const char *Cmd)
2364 {
2365 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2366 CmdHpf("");
2367
2368 int sign = 1;
2369 int zc = 0;
2370 int lastZc = 0;
2371
2372 for (int i = 0; i < GraphTraceLen; ++i) {
2373 if (GraphBuffer[i] * sign >= 0) {
2374 // No change in sign, reproduce the previous sample count.
2375 zc++;
2376 GraphBuffer[i] = lastZc;
2377 } else {
2378 // Change in sign, reset the sample count.
2379 sign = -sign;
2380 GraphBuffer[i] = lastZc;
2381 if (sign > 0) {
2382 lastZc = zc;
2383 zc = 0;
2384 }
2385 }
2386 }
2387
2388 RepaintGraphWindow();
2389 return 0;
2390 }
2391
2392 /**
2393 * @brief Utility for conversion via cmdline.
2394 * @param Cmd
2395 * @return
2396 */
2397 int Cmdbin2hex(const char *Cmd)
2398 {
2399 int bg =0, en =0;
2400 if(param_getptr(Cmd, &bg, &en, 0))
2401 return usage_data_bin2hex();
2402
2403 //Number of digits supplied as argument
2404 size_t length = en - bg +1;
2405 size_t bytelen = (length+7) / 8;
2406 uint8_t* arr = (uint8_t *) malloc(bytelen);
2407 memset(arr, 0, bytelen);
2408 BitstreamOut bout = { arr, 0, 0 };
2409
2410 for (; bg <= en ;bg++) {
2411 char c = Cmd[bg];
2412 if( c == '1') pushBit(&bout, 1);
2413 else if( c == '0') pushBit(&bout, 0);
2414 else PrintAndLog("Ignoring '%c'", c);
2415 }
2416
2417 if (bout.numbits % 8 != 0)
2418 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
2419
2420 //Uses printf instead of PrintAndLog since the latter
2421 // adds linebreaks to each printout - this way was more convenient since we don't have to
2422 // allocate a string and write to that first...
2423 for(size_t x = 0; x < bytelen ; x++)
2424 printf("%02X", arr[x]);
2425
2426 printf("\n");
2427 free(arr);
2428 return 0;
2429 }
2430
2431 int Cmdhex2bin(const char *Cmd)
2432 {
2433 int bg =0, en =0;
2434 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
2435
2436 while (bg <= en ) {
2437 char x = Cmd[bg++];
2438 // capitalize
2439 if (x >= 'a' && x <= 'f')
2440 x -= 32;
2441 // convert to numeric value
2442 if (x >= '0' && x <= '9')
2443 x -= '0';
2444 else if (x >= 'A' && x <= 'F')
2445 x -= 'A' - 10;
2446 else
2447 continue;
2448
2449 //Uses printf instead of PrintAndLog since the latter
2450 // adds linebreaks to each printout - this way was more convenient since we don't have to
2451 // allocate a string and write to that first...
2452
2453 for(int i= 0 ; i < 4 ; ++i)
2454 printf("%d",(x >> (3 - i)) & 1);
2455 }
2456 printf("\n");
2457
2458 return 0;
2459 }
2460
2461 int CmdDataIIR(const char *Cmd){
2462
2463 uint8_t k = param_get8(Cmd,0);
2464 //iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
2465 iceSimple_Filter(GraphBuffer, GraphTraceLen, k);
2466 RepaintGraphWindow();
2467 return 0;
2468 }
2469
2470 static command_t CommandTable[] =
2471 {
2472 {"help", CmdHelp, 1, "This help"},
2473 {"askedgedetect", CmdAskEdgeDetect, 1, "[threshold] Adjust Graph for manual ASK demod using the length of sample differences to detect the edge of a wave (use 20-45, def:25)"},
2474 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2475 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
2476 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
2477 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
2478 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
2479 {"bin2hex", Cmdbin2hex, 1, "<digits> -- Converts binary to hexadecimal"},
2480 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
2481 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2482 {"dec", CmdDec, 1, "Decimate samples"},
2483 {"detectclock", CmdDetectClockRate, 1, "[<a|f|n|p>] Detect ASK, FSK, NRZ, PSK clock rate of wave in GraphBuffer"},
2484 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
2485 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2486 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2487 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2488 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2489 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2490 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2491 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2492 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2493 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
2494 {"hex2bin", Cmdhex2bin, 1, "<hexadecimal> -- Converts hexadecimal to binary"},
2495 {"hide", CmdHide, 1, "Hide graph window"},
2496 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2497 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2498 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2499 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
2500 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
2501 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2502 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
2503 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
2504 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
2505 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
2506 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2507 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2508 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2509 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
2510 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
2511 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
2512 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2513 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2514 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2515 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
2516 {"iir", CmdDataIIR, 0, "apply IIR buttersworth filter on plotdata"},
2517 {NULL, NULL, 0, NULL}
2518 };
2519
2520 int CmdData(const char *Cmd){
2521 clearCommandBuffer();
2522 CmdsParse(CommandTable, Cmd);
2523 return 0;
2524 }
2525
2526 int CmdHelp(const char *Cmd)
2527 {
2528 CmdsHelp(CommandTable);
2529 return 0;
2530 }
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