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FIX: Even the US clock had the issues with not resetting properly. Now its always...
[proxmark3-svn] / client / cmddata.c
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a553f267 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
eb891c38 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"
d51b2eda 16#include "util.h"
7fe9b0b7 17#include "cmdmain.h"
eb891c38 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
ad6219fc 27
4118b74d 28uint8_t DemodBuffer[MAX_DEMOD_BUF_LEN];
b10a759f 29uint8_t g_debugMode=0;
30size_t DemodBufferLen=0;
7fe9b0b7 31static int CmdHelp(const char *Cmd);
32
a0c7eea7 33int 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}
42int 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}
55int 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}
65int 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}
79int 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}
96int 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}
112int 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}
135int 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}
152int 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}
168int 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}
181int 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}
194int 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}
207int 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}
215int 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}
224int 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}
236int 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}
241int 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
4118b74d 247//set the demod buffer with given array of binary (one bit per byte)
248//by marshmellow
ec75f5c1 249void setDemodBuf(uint8_t *buff, size_t size, size_t startIdx)
4118b74d 250{
13d77ef9 251 if (buff == NULL)
252 return;
253
254 if ( size >= MAX_DEMOD_BUF_LEN)
255 size = MAX_DEMOD_BUF_LEN;
256
ec75f5c1 257 size_t i = 0;
258 for (; i < size; i++){
259 DemodBuffer[i]=buff[startIdx++];
ba1a299c 260 }
56d0fb8e 261 DemodBufferLen = size;
4118b74d 262}
263
ec75f5c1 264int CmdSetDebugMode(const char *Cmd)
265{
e0165dcf 266 int demod=0;
267 sscanf(Cmd, "%i", &demod);
268 g_debugMode=(uint8_t)demod;
269 return 1;
ec75f5c1 270}
271
4118b74d 272//by marshmellow
abd6112f 273void printDemodBuff(void)
4118b74d 274{
ba1a299c 275 int bitLen = DemodBufferLen;
2767fc02 276 if (bitLen<1) {
ba1a299c 277 PrintAndLog("no bits found in demod buffer");
278 return;
279 }
280 if (bitLen>512) bitLen=512; //max output to 512 bits if we have more - should be plenty
e0165dcf 281
9d7e9935 282 char *bin = sprint_bin_break(DemodBuffer, bitLen,16);
2767fc02 283 PrintAndLog("%s",bin);
284
ba1a299c 285 return;
4118b74d 286}
287
8d960002 288int CmdPrintDemodBuff(const char *Cmd)
289{
2d2f7d19 290 char hex[512]={0x00};
291 bool hexMode = false;
292 bool errors = false;
bf32dd92 293 uint32_t offset = 0; //could be size_t but no param_get16...
294 uint32_t length = 512;
2d2f7d19 295 char cmdp = 0;
296 while(param_getchar(Cmd, cmdp) != 0x00)
297 {
298 switch(param_getchar(Cmd, cmdp))
299 {
300 case 'h':
301 case 'H':
302 return usage_data_printdemodbuf();
303 case 'x':
304 case 'X':
305 hexMode = true;
306 cmdp++;
307 break;
308 case 'o':
309 case 'O':
bf32dd92 310 offset = param_get32ex(Cmd, cmdp+1, 0, 10);
2d2f7d19 311 if (!offset) errors = true;
312 cmdp += 2;
313 break;
bf32dd92 314 case 'l':
315 case 'L':
316 length = param_get32ex(Cmd, cmdp+1, 512, 10);
317 if (!length) errors = true;
318 cmdp += 2;
319 break;
2d2f7d19 320 default:
321 PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
322 errors = true;
323 break;
324 }
325 if(errors) break;
e0165dcf 326 }
2d2f7d19 327 //Validations
328 if(errors) return usage_data_printdemodbuf();
bf32dd92 329 length = (length > (DemodBufferLen-offset)) ? DemodBufferLen-offset : length;
330 int numBits = (length) & 0x00FFC; //make sure we don't exceed our string
2d2f7d19 331
332 if (hexMode){
333 char *buf = (char *) (DemodBuffer + offset);
bf32dd92 334 numBits = (numBits > sizeof(hex)) ? sizeof(hex) : numBits;
2d2f7d19 335 numBits = binarraytohex(hex, buf, numBits);
e0165dcf 336 if (numBits==0) return 0;
2d2f7d19 337 PrintAndLog("DemodBuffer: %s",hex);
e0165dcf 338 } else {
52f2df61 339 PrintAndLog("DemodBuffer:\n%s", sprint_bin_break(DemodBuffer+offset,numBits,16));
e0165dcf 340 }
341 return 1;
8d960002 342}
7fe9b0b7 343
2767fc02 344//by marshmellow
78f5b1a7 345//this function strictly converts >1 to 1 and <1 to 0 for each sample in the graphbuffer
346int CmdGetBitStream(const char *Cmd)
347{
e0165dcf 348 int i;
349 CmdHpf(Cmd);
350 for (i = 0; i < GraphTraceLen; i++) {
351 if (GraphBuffer[i] >= 1) {
352 GraphBuffer[i] = 1;
353 } else {
354 GraphBuffer[i] = 0;
355 }
356 }
357 RepaintGraphWindow();
358 return 0;
78f5b1a7 359}
360
d5a72d2f 361//by marshmellow
abd6112f 362//print 64 bit EM410x ID in multiple formats
b41534d1 363void printEM410x(uint32_t hi, uint64_t id)
2fc2150e 364{
e0165dcf 365 if (id || hi){
366 uint64_t iii=1;
367 uint64_t id2lo=0;
368 uint32_t ii=0;
369 uint32_t i=0;
370 for (ii=5; ii>0;ii--){
371 for (i=0;i<8;i++){
372 id2lo=(id2lo<<1LL) | ((id & (iii << (i+((ii-1)*8)))) >> (i+((ii-1)*8)));
373 }
374 }
375 if (hi){
376 //output 88 bit em id
2767fc02 377 PrintAndLog("\nEM TAG ID : %06X%016llX", hi, id);
e0165dcf 378 } else{
379 //output 40 bit em id
2767fc02 380 PrintAndLog("\nEM TAG ID : %010llX", id);
381 PrintAndLog("Unique TAG ID : %010llX", id2lo);
e0165dcf 382 PrintAndLog("\nPossible de-scramble patterns");
383 PrintAndLog("HoneyWell IdentKey {");
384 PrintAndLog("DEZ 8 : %08lld",id & 0xFFFFFF);
385 PrintAndLog("DEZ 10 : %010lld",id & 0xFFFFFFFF);
386 PrintAndLog("DEZ 5.5 : %05lld.%05lld",(id>>16LL) & 0xFFFF,(id & 0xFFFF));
387 PrintAndLog("DEZ 3.5A : %03lld.%05lld",(id>>32ll),(id & 0xFFFF));
388 PrintAndLog("DEZ 3.5B : %03lld.%05lld",(id & 0xFF000000) >> 24,(id & 0xFFFF));
389 PrintAndLog("DEZ 3.5C : %03lld.%05lld",(id & 0xFF0000) >> 16,(id & 0xFFFF));
390 PrintAndLog("DEZ 14/IK2 : %014lld",id);
391 PrintAndLog("DEZ 15/IK3 : %015lld",id2lo);
392 PrintAndLog("DEZ 20/ZK : %02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld%02lld",
393 (id2lo & 0xf000000000) >> 36,
394 (id2lo & 0x0f00000000) >> 32,
395 (id2lo & 0x00f0000000) >> 28,
396 (id2lo & 0x000f000000) >> 24,
397 (id2lo & 0x0000f00000) >> 20,
398 (id2lo & 0x00000f0000) >> 16,
399 (id2lo & 0x000000f000) >> 12,
400 (id2lo & 0x0000000f00) >> 8,
401 (id2lo & 0x00000000f0) >> 4,
402 (id2lo & 0x000000000f)
403 );
404 uint64_t paxton = (((id>>32) << 24) | (id & 0xffffff)) + 0x143e00;
405 PrintAndLog("}\nOther : %05lld_%03lld_%08lld",(id&0xFFFF),((id>>16LL) & 0xFF),(id & 0xFFFFFF));
2767fc02 406 PrintAndLog("Pattern Paxton : %lld [0x%llX]", paxton, paxton);
e0165dcf 407
408 uint32_t p1id = (id & 0xFFFFFF);
409 uint8_t arr[32] = {0x00};
410 int i =0;
411 int j = 23;
412 for (; i < 24; ++i, --j ){
413 arr[i] = (p1id >> i) & 1;
414 }
415
416 uint32_t p1 = 0;
417
418 p1 |= arr[23] << 21;
419 p1 |= arr[22] << 23;
420 p1 |= arr[21] << 20;
421 p1 |= arr[20] << 22;
422
423 p1 |= arr[19] << 18;
424 p1 |= arr[18] << 16;
425 p1 |= arr[17] << 19;
426 p1 |= arr[16] << 17;
427
428 p1 |= arr[15] << 13;
429 p1 |= arr[14] << 15;
430 p1 |= arr[13] << 12;
431 p1 |= arr[12] << 14;
432
433 p1 |= arr[11] << 6;
434 p1 |= arr[10] << 2;
435 p1 |= arr[9] << 7;
436 p1 |= arr[8] << 1;
437
438 p1 |= arr[7] << 0;
439 p1 |= arr[6] << 8;
440 p1 |= arr[5] << 11;
441 p1 |= arr[4] << 3;
442
443 p1 |= arr[3] << 10;
444 p1 |= arr[2] << 4;
445 p1 |= arr[1] << 5;
446 p1 |= arr[0] << 9;
2767fc02 447 PrintAndLog("Pattern 1 : %d [0x%X]", p1, p1);
e0165dcf 448
449 uint16_t sebury1 = id & 0xFFFF;
450 uint8_t sebury2 = (id >> 16) & 0x7F;
451 uint32_t sebury3 = id & 0x7FFFFF;
2767fc02 452 PrintAndLog("Pattern Sebury : %d %d %d [0x%X 0x%X 0x%X]", sebury1, sebury2, sebury3, sebury1, sebury2, sebury3);
e0165dcf 453 }
454 }
455 return;
eb191de6 456}
457
fef74fdc 458int AskEm410xDecode(bool verbose, uint32_t *hi, uint64_t *lo )
13d77ef9 459{
fef74fdc 460 size_t idx = 0;
461 size_t BitLen = DemodBufferLen;
462 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
463 memcpy(BitStream, DemodBuffer, BitLen);
464 if (Em410xDecode(BitStream, &BitLen, &idx, hi, lo)){
465 //set GraphBuffer for clone or sim command
466 setDemodBuf(BitStream, BitLen, idx);
e0165dcf 467 if (g_debugMode){
fef74fdc 468 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
e0165dcf 469 printDemodBuff();
470 }
fef74fdc 471 if (verbose){
472 PrintAndLog("EM410x pattern found: ");
473 printEM410x(*hi, *lo);
474 }
e0165dcf 475 return 1;
476 }
477 return 0;
13d77ef9 478}
fef74fdc 479
480int AskEm410xDemod(const char *Cmd, uint32_t *hi, uint64_t *lo, bool verbose)
481{
05164399 482 bool st = TRUE;
483 if (!ASKDemod_ext(Cmd, FALSE, FALSE, 1, &st)) return 0;
fef74fdc 484 return AskEm410xDecode(verbose, hi, lo);
485}
486
e888ed8e 487//by marshmellow
e770c648 488//takes 3 arguments - clock, invert and maxErr as integers
489//attempts to demodulate ask while decoding manchester
490//prints binary found and saves in graphbuffer for further commands
491int CmdAskEM410xDemod(const char *Cmd)
492{
e0165dcf 493 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 494 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
495 return usage_data_askem410xdemod();
496
e0165dcf 497 uint64_t lo = 0;
fef74fdc 498 uint32_t hi = 0;
499 return AskEm410xDemod(Cmd, &hi, &lo, true);
e770c648 500}
501
fef74fdc 502//by marshmellow
503//Cmd Args: Clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
504// (amp may not be needed anymore)
505//verbose will print results and demoding messages
506//emSearch will auto search for EM410x format in bitstream
507//askType switches decode: ask/raw = 0, ask/manchester = 1
05164399 508int ASKDemod_ext(const char *Cmd, bool verbose, bool emSearch, uint8_t askType, bool *stCheck) {
e0165dcf 509 int invert=0;
510 int clk=0;
511 int maxErr=100;
fef74fdc 512 int maxLen=0;
513 uint8_t askAmp = 0;
514 char amp = param_getchar(Cmd, 0);
e0165dcf 515 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
fef74fdc 516 sscanf(Cmd, "%i %i %i %i %c", &clk, &invert, &maxErr, &maxLen, &amp);
bf32dd92 517 if (!maxLen) maxLen = BIGBUF_SIZE;
e0165dcf 518 if (invert != 0 && invert != 1) {
519 PrintAndLog("Invalid argument: %s", Cmd);
520 return 0;
521 }
522 if (clk==1){
523 invert=1;
524 clk=0;
525 }
fef74fdc 526 if (amp == 'a' || amp == 'A') askAmp=1;
e0165dcf 527 size_t BitLen = getFromGraphBuf(BitStream);
2767fc02 528 if (g_debugMode) PrintAndLog("DEBUG: Bitlen from grphbuff: %d",BitLen);
fef74fdc 529 if (BitLen<255) return 0;
23f0a7d8 530 if (maxLen<BitLen && maxLen != 0) BitLen = maxLen;
05164399 531 int foundclk = 0;
532 bool st = false;
533 if (*stCheck) st = DetectST(BitStream, &BitLen, &foundclk);
534 if (st) {
535 *stCheck = st;
536 clk = (clk == 0) ? foundclk : clk;
537 if (verbose || g_debugMode) PrintAndLog("\nFound Sequence Terminator");
538 }
fef74fdc 539 int errCnt = askdemod(BitStream, &BitLen, &clk, &invert, maxErr, askAmp, askType);
540 if (errCnt<0 || BitLen<16){ //if fatal error (or -1)
2767fc02 541 if (g_debugMode) PrintAndLog("DEBUG: no data found %d, errors:%d, bitlen:%d, clock:%d",errCnt,invert,BitLen,clk);
e0165dcf 542 return 0;
543 }
2767fc02 544 if (errCnt>maxErr){
545 if (g_debugMode) PrintAndLog("DEBUG: Too many errors found, errors:%d, bits:%d, clock:%d",errCnt, BitLen, clk);
546 return 0;
547 }
548 if (verbose || g_debugMode) PrintAndLog("\nUsing Clock:%d, Invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 549
550 //output
e0165dcf 551 setDemodBuf(BitStream,BitLen,0);
fef74fdc 552 if (verbose || g_debugMode){
553 if (errCnt>0) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
1299c798 554 if (askType) PrintAndLog("ASK/Manchester - Clock: %d - Decoded bitstream:",clk);
555 else PrintAndLog("ASK/Raw - Clock: %d - Decoded bitstream:",clk);
fef74fdc 556 // Now output the bitstream to the scrollback by line of 16 bits
557 printDemodBuff();
558
559 }
560 uint64_t lo = 0;
561 uint32_t hi = 0;
e0165dcf 562 if (emSearch){
fef74fdc 563 AskEm410xDecode(true, &hi, &lo);
e0165dcf 564 }
565 return 1;
eb191de6 566}
05164399 567int ASKDemod(const char *Cmd, bool verbose, bool emSearch, uint8_t askType) {
568 bool st = false;
569 return ASKDemod_ext(Cmd, verbose, emSearch, askType, &st);
570}
eb191de6 571
4ac906d1 572//by marshmellow
fef74fdc 573//takes 5 arguments - clock, invert, maxErr, maxLen as integers and amplify as char == 'a'
4ac906d1 574//attempts to demodulate ask while decoding manchester
575//prints binary found and saves in graphbuffer for further commands
576int Cmdaskmandemod(const char *Cmd)
577{
e0165dcf 578 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 579 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
580 return usage_data_rawdemod_am();
581
05164399 582 bool st = TRUE;
583 if (Cmd[0]=='s')
584 return ASKDemod_ext(Cmd++, TRUE, TRUE, 1, &st);
585 else if (Cmd[1] == 's')
586 return ASKDemod_ext(Cmd+=2, TRUE, TRUE, 1, &st);
587 else
fef74fdc 588 return ASKDemod(Cmd, TRUE, TRUE, 1);
4ac906d1 589}
590
eb191de6 591//by marshmellow
d5a72d2f 592//manchester decode
eb191de6 593//stricktly take 10 and 01 and convert to 0 and 1
594int Cmdmandecoderaw(const char *Cmd)
595{
e0165dcf 596 int i =0;
597 int errCnt=0;
598 size_t size=0;
fef74fdc 599 int invert=0;
0ad1a1d4 600 int maxErr = 20;
e0165dcf 601 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 602 if (strlen(Cmd) > 5 || cmdp == 'h' || cmdp == 'H')
603 return usage_data_manrawdecode();
604
e0165dcf 605 if (DemodBufferLen==0) return 0;
606 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
607 int high=0,low=0;
608 for (;i<DemodBufferLen;++i){
609 if (DemodBuffer[i]>high) high=DemodBuffer[i];
610 else if(DemodBuffer[i]<low) low=DemodBuffer[i];
611 BitStream[i]=DemodBuffer[i];
612 }
1f918317 613 if (high>7 || low <0 ){
2767fc02 614 PrintAndLog("Error: please raw demod the wave first then manchester raw decode");
e0165dcf 615 return 0;
616 }
1f918317 617
fef74fdc 618 sscanf(Cmd, "%i %i", &invert, &maxErr);
e0165dcf 619 size=i;
fef74fdc 620 errCnt=manrawdecode(BitStream, &size, invert);
e0165dcf 621 if (errCnt>=maxErr){
622 PrintAndLog("Too many errors: %d",errCnt);
623 return 0;
624 }
625 PrintAndLog("Manchester Decoded - # errors:%d - data:",errCnt);
2767fc02 626 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
e0165dcf 627 if (errCnt==0){
628 uint64_t id = 0;
629 uint32_t hi = 0;
630 size_t idx=0;
631 if (Em410xDecode(BitStream, &size, &idx, &hi, &id)){
632 //need to adjust to set bitstream back to manchester encoded data
633 //setDemodBuf(BitStream, size, idx);
634
635 printEM410x(hi, id);
636 }
637 }
638 return 1;
d5a72d2f 639}
640
641//by marshmellow
642//biphase decode
643//take 01 or 10 = 0 and 11 or 00 = 1
1e090a61 644//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
645// and "invert" default = 0 if 1 it will invert output
2767fc02 646// the argument offset allows us to manually shift if the output is incorrect - [EDIT: now auto detects]
d5a72d2f 647int CmdBiphaseDecodeRaw(const char *Cmd)
648{
ba1a299c 649 size_t size=0;
b41534d1 650 int offset=0, invert=0, maxErr=20, errCnt=0;
b4fb11ba 651 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 652 if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H')
653 return usage_data_biphaserawdecode();
654
b41534d1 655 sscanf(Cmd, "%i %i %i", &offset, &invert, &maxErr);
656 if (DemodBufferLen==0){
657 PrintAndLog("DemodBuffer Empty - run 'data rawdemod ar' first");
b4fb11ba 658 return 0;
659 }
b41534d1 660 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
661 memcpy(BitStream, DemodBuffer, DemodBufferLen);
662 size = DemodBufferLen;
1e090a61 663 errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 664 if (errCnt<0){
665 PrintAndLog("Error during decode:%d", errCnt);
666 return 0;
667 }
668 if (errCnt>maxErr){
b4fb11ba 669 PrintAndLog("Too many errors attempting to decode: %d",errCnt);
670 return 0;
671 }
b41534d1 672
673 if (errCnt>0){
2767fc02 674 PrintAndLog("# Errors found during Demod (shown as 7 in bit stream): %d",errCnt);
b41534d1 675 }
676 PrintAndLog("Biphase Decoded using offset: %d - # invert:%d - data:",offset,invert);
2767fc02 677 PrintAndLog("%s", sprint_bin_break(BitStream, size, 16));
b41534d1 678
679 if (offset) setDemodBuf(DemodBuffer,DemodBufferLen-offset, offset); //remove first bit from raw demod
b4fb11ba 680 return 1;
eb191de6 681}
682
b41534d1 683//by marshmellow
684// - ASK Demod then Biphase decode GraphBuffer samples
685int ASKbiphaseDemod(const char *Cmd, bool verbose)
686{
687 //ask raw demod GraphBuffer first
b4c1f167 688 int offset=0, clk=0, invert=0, maxErr=0;
689 sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
1299c798 690
b41534d1 691 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
6c283951 692 size_t size = getFromGraphBuf(BitStream);
693 if (size == 0 ) {
694 if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");
695 return 0;
696 }
b10a759f 697 //invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
b4c1f167 698 int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1299c798 699 if ( errCnt < 0 || errCnt > maxErr ) {
700 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
701 return 0;
702 }
703
704 //attempt to Biphase decode BitStream
705 errCnt = BiphaseRawDecode(BitStream, &size, offset, invert);
b41534d1 706 if (errCnt < 0){
707 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
708 return 0;
709 }
710 if (errCnt > maxErr) {
711 if (g_debugMode || verbose) PrintAndLog("Error BiphaseRawDecode too many errors: %d", errCnt);
712 return 0;
713 }
714 //success set DemodBuffer and return
715 setDemodBuf(BitStream, size, 0);
716 if (g_debugMode || verbose){
1299c798 717 PrintAndLog("Biphase Decoded using offset: %d - clock: %d - # errors:%d - data:",offset,clk,errCnt);
b41534d1 718 printDemodBuff();
719 }
720 return 1;
721}
722//by marshmellow - see ASKbiphaseDemod
723int Cmdaskbiphdemod(const char *Cmd)
724{
e0165dcf 725 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 726 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
727 return usage_data_rawdemod_ab();
728
e0165dcf 729 return ASKbiphaseDemod(Cmd, TRUE);
b41534d1 730}
731
8d960002 732//by marshmellow
733//attempts to demodulate and identify a G_Prox_II verex/chubb card
734//WARNING: if it fails during some points it will destroy the DemodBuffer data
735// but will leave the GraphBuffer intact.
736//if successful it will push askraw data back to demod buffer ready for emulation
737int CmdG_Prox_II_Demod(const char *Cmd)
738{
e0165dcf 739 if (!ASKbiphaseDemod(Cmd, FALSE)){
c728b2b4 740 if (g_debugMode) PrintAndLog("Error gProxII: ASKbiphaseDemod failed 1st try");
e0165dcf 741 return 0;
742 }
743 size_t size = DemodBufferLen;
744 //call lfdemod.c demod for gProxII
745 int ans = gProxII_Demod(DemodBuffer, &size);
746 if (ans < 0){
747 if (g_debugMode) PrintAndLog("Error gProxII_Demod");
748 return 0;
749 }
c728b2b4 750 //got a good demod of 96 bits
751 uint8_t ByteStream[8] = {0x00};
e0165dcf 752 uint8_t xorKey=0;
c728b2b4 753 size_t startIdx = ans + 6; //start after 6 bit preamble
754
755 uint8_t bits_no_spacer[90];
756 //so as to not mess with raw DemodBuffer copy to a new sample array
757 memcpy(bits_no_spacer, DemodBuffer + startIdx, 90);
758 // remove the 18 (90/5=18) parity bits (down to 72 bits (96-6-18=72))
759 size_t bitLen = removeParity(bits_no_spacer, 0, 5, 3, 90); //source, startloc, paritylen, ptype, length_to_run
760 if (bitLen != 72) {
761 if (g_debugMode) PrintAndLog("Error gProxII: spacer removal did not produce 72 bits: %u, start: %u", bitLen, startIdx);
e0165dcf 762 return 0;
763 }
c728b2b4 764 // get key and then get all 8 bytes of payload decoded
765 xorKey = (uint8_t)bytebits_to_byteLSBF(bits_no_spacer, 8);
766 for (size_t idx = 0; idx < 8; idx++) {
767 ByteStream[idx] = ((uint8_t)bytebits_to_byteLSBF(bits_no_spacer+8 + (idx*8),8)) ^ xorKey;
768 if (g_debugMode) PrintAndLog("byte %u after xor: %02x", (unsigned int)idx, ByteStream[idx]);
e0165dcf 769 }
c728b2b4 770 //now ByteStream contains 8 Bytes (64 bits) of decrypted raw tag data
e0165dcf 771 //
772 uint8_t fmtLen = ByteStream[0]>>2;
773 uint32_t FC = 0;
774 uint32_t Card = 0;
c728b2b4 775 //get raw 96 bits to print
e0165dcf 776 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans,32);
777 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
778 uint32_t raw3 = bytebits_to_byte(DemodBuffer+ans+64, 32);
779
780 if (fmtLen==36){
781 FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
782 Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
c728b2b4 783 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
e0165dcf 784 } else if(fmtLen==26){
785 FC = ((ByteStream[3] & 0x7F)<<1) | (ByteStream[4]>>7);
786 Card = ((ByteStream[4]&0x7F)<<9) | (ByteStream[5]<<1) | (ByteStream[6]>>7);
c728b2b4 787 PrintAndLog("G-Prox-II Found: FmtLen %d, FC %u, Card %u", (int)fmtLen, FC, Card);
e0165dcf 788 } else {
c728b2b4 789 PrintAndLog("Unknown G-Prox-II Fmt Found: FmtLen %d",(int)fmtLen);
790 PrintAndLog("Decoded Raw: %s", sprint_hex(ByteStream, 8));
e0165dcf 791 }
792 PrintAndLog("Raw: %08x%08x%08x", raw1,raw2,raw3);
793 setDemodBuf(DemodBuffer+ans, 96, 0);
794 return 1;
8d960002 795}
796
a126332a 797//by marshmellow
798//see ASKDemod for what args are accepted
799int CmdVikingDemod(const char *Cmd)
800{
801 if (!ASKDemod(Cmd, false, false, 1)) {
802 if (g_debugMode) PrintAndLog("ASKDemod failed");
803 return 0;
804 }
805 size_t size = DemodBufferLen;
806 //call lfdemod.c demod for Viking
807 int ans = VikingDemod_AM(DemodBuffer, &size);
808 if (ans < 0) {
c0afa86f 809 if (g_debugMode) PrintAndLog("Error Viking_Demod %d %s", ans, (ans == -5)?"[chksum error]":"");
a126332a 810 return 0;
811 }
812 //got a good demod
813 uint32_t raw1 = bytebits_to_byte(DemodBuffer+ans, 32);
814 uint32_t raw2 = bytebits_to_byte(DemodBuffer+ans+32, 32);
815 uint32_t cardid = bytebits_to_byte(DemodBuffer+ans+24, 32);
816 uint8_t checksum = bytebits_to_byte(DemodBuffer+ans+32+24, 8);
817 PrintAndLog("Viking Tag Found: Card ID %08X, Checksum: %02X", cardid, checksum);
818 PrintAndLog("Raw: %08X%08X", raw1,raw2);
819 setDemodBuf(DemodBuffer+ans, 64, 0);
820 return 1;
821}
822
fef74fdc 823//by marshmellow - see ASKDemod
4ac906d1 824int Cmdaskrawdemod(const char *Cmd)
825{
e0165dcf 826 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 827 if (strlen(Cmd) > 25 || cmdp == 'h' || cmdp == 'H')
828 return usage_data_rawdemod_ar();
829
fef74fdc 830 return ASKDemod(Cmd, TRUE, FALSE, 0);
4ac906d1 831}
832
73d04bb4 833int AutoCorrelate(int window, bool SaveGrph, bool verbose)
7fe9b0b7 834{
e0165dcf 835 static int CorrelBuffer[MAX_GRAPH_TRACE_LEN];
836 size_t Correlation = 0;
837 int maxSum = 0;
838 int lastMax = 0;
839 if (verbose) PrintAndLog("performing %d correlations", GraphTraceLen - window);
840 for (int i = 0; i < GraphTraceLen - window; ++i) {
841 int sum = 0;
842 for (int j = 0; j < window; ++j) {
843 sum += (GraphBuffer[j]*GraphBuffer[i + j]) / 256;
844 }
845 CorrelBuffer[i] = sum;
846 if (sum >= maxSum-100 && sum <= maxSum+100){
847 //another max
848 Correlation = i-lastMax;
849 lastMax = i;
850 if (sum > maxSum) maxSum = sum;
851 } else if (sum > maxSum){
852 maxSum=sum;
853 lastMax = i;
854 }
855 }
856 if (Correlation==0){
857 //try again with wider margin
858 for (int i = 0; i < GraphTraceLen - window; i++){
859 if (CorrelBuffer[i] >= maxSum-(maxSum*0.05) && CorrelBuffer[i] <= maxSum+(maxSum*0.05)){
860 //another max
861 Correlation = i-lastMax;
862 lastMax = i;
863 //if (CorrelBuffer[i] > maxSum) maxSum = sum;
864 }
865 }
866 }
867 if (verbose && Correlation > 0) PrintAndLog("Possible Correlation: %d samples",Correlation);
868
869 if (SaveGrph){
870 GraphTraceLen = GraphTraceLen - window;
871 memcpy(GraphBuffer, CorrelBuffer, GraphTraceLen * sizeof (int));
872 RepaintGraphWindow();
873 }
874 return Correlation;
73d04bb4 875}
7fe9b0b7 876
73d04bb4 877int CmdAutoCorr(const char *Cmd)
878{
e0165dcf 879 char cmdp = param_getchar(Cmd, 0);
e3f9c50d 880 if (cmdp == 'h' || cmdp == 'H') return usage_data_autocorr();
e0165dcf 881 int window = 4000; //set default
882 char grph=0;
883 bool updateGrph = FALSE;
884 sscanf(Cmd, "%i %c", &window, &grph);
885
886 if (window >= GraphTraceLen) {
887 PrintAndLog("window must be smaller than trace (%d samples)",
888 GraphTraceLen);
889 return 0;
890 }
891 if (grph == 'g') updateGrph=TRUE;
892 return AutoCorrelate(window, updateGrph, TRUE);
7fe9b0b7 893}
894
895int CmdBitsamples(const char *Cmd)
896{
e0165dcf 897 int cnt = 0;
898 uint8_t got[12288];
952a8bb5 899
a0c7eea7 900 GetFromBigBuf(got, sizeof(got), 0);
901 WaitForResponse(CMD_ACK, NULL);
7fe9b0b7 902
a0c7eea7 903 for (int j = 0; j < sizeof(got); j++) {
904 for (int k = 0; k < 8; k++) {
905 if(got[j] & (1 << (7 - k))) {
906 GraphBuffer[cnt++] = 1;
907 } else {
908 GraphBuffer[cnt++] = 0;
e0165dcf 909 }
a0c7eea7 910 }
e0165dcf 911 }
912 GraphTraceLen = cnt;
913 RepaintGraphWindow();
914 return 0;
7fe9b0b7 915}
916
7fe9b0b7 917int CmdBuffClear(const char *Cmd)
918{
a0c7eea7 919 UsbCommand c = {CMD_BUFF_CLEAR, {0,0,0}};
e0165dcf 920 SendCommand(&c);
921 ClearGraph(true);
922 return 0;
7fe9b0b7 923}
924
925int CmdDec(const char *Cmd)
926{
a0c7eea7 927 for (int i = 0; i < (GraphTraceLen >> 2); ++i)
e0165dcf 928 GraphBuffer[i] = GraphBuffer[i * 2];
a0c7eea7 929
930 GraphTraceLen >>= 2;
e0165dcf 931 PrintAndLog("decimated by 2");
932 RepaintGraphWindow();
933 return 0;
7fe9b0b7 934}
698b649e
MHS		 935/**
936 * Undecimate - I'd call it 'interpolate', but we'll save that
937 * name until someone does an actual interpolation command, not just
938 * blindly repeating samples
939 * @param Cmd
940 * @return
941 */
942int CmdUndec(const char *Cmd)
943{
a0c7eea7 944 char cmdp = param_getchar(Cmd, 0);
945 if (cmdp == 'h' || cmdp == 'H')
946 return usage_data_undecimate();
c856ceae 947
1d42f25f 948 uint8_t factor = param_get8ex(Cmd, 0, 2, 10);
a0c7eea7 949
698b649e
MHS		 950 //We have memory, don't we?
951 int swap[MAX_GRAPH_TRACE_LEN] = { 0 };
c856ceae 952 uint32_t g_index = 0 ,s_index = 0;
1d42f25f 953 while(g_index < GraphTraceLen && s_index + factor < MAX_GRAPH_TRACE_LEN)
698b649e 954 {
c856ceae 955 int count = 0;
1d42f25f 956 for (count = 0; count < factor && s_index + count < MAX_GRAPH_TRACE_LEN; count++)
c856ceae 957 swap[s_index+count] = GraphBuffer[g_index];
1d42f25f 958 s_index += count;
959 g_index++;
698b649e 960 }
698b649e 961
1d42f25f 962 memcpy(GraphBuffer, swap, s_index * sizeof(int));
c856ceae
MHS		 963 GraphTraceLen = s_index;
964 RepaintGraphWindow();
698b649e
MHS		 965 return 0;
966}
7fe9b0b7 967
ec75f5c1 968//by marshmellow
969//shift graph zero up or down based on input + or -
970int CmdGraphShiftZero(const char *Cmd)
971{
e0165dcf 972 int shift=0;
973 //set options from parameters entered with the command
974 sscanf(Cmd, "%i", &shift);
975 int shiftedVal=0;
976 for(int i = 0; i<GraphTraceLen; i++){
977 shiftedVal=GraphBuffer[i]+shift;
978 if (shiftedVal>127)
979 shiftedVal=127;
980 else if (shiftedVal<-127)
981 shiftedVal=-127;
982 GraphBuffer[i]= shiftedVal;
983 }
984 CmdNorm("");
985 return 0;
ec75f5c1 986}
987
6de43508 988//by marshmellow
989//use large jumps in read samples to identify edges of waves and then amplify that wave to max
2767fc02 990//similar to dirtheshold, threshold commands
6de43508 991//takes a threshold length which is the measured length between two samples then determines an edge
992int CmdAskEdgeDetect(const char *Cmd)
993{
e0165dcf 994 int thresLen = 25;
180ec86e 995 int last = 0;
e0165dcf 996 sscanf(Cmd, "%i", &thresLen);
49bbc60a 997
180ec86e 998 for(int i = 1; i < GraphTraceLen; ++i){
999 if (GraphBuffer[i] - GraphBuffer[i-1] >= thresLen) //large jump up
1000 last = 127;
1001 else if(GraphBuffer[i] - GraphBuffer[i-1] <= -1 * thresLen) //large jump down
1002 last = -127;
1003
1004 GraphBuffer[i-1] = last;
e0165dcf 1005 }
1006 RepaintGraphWindow();
e0165dcf 1007 return 0;
6de43508 1008}
1009
7fe9b0b7 1010/* Print our clock rate */
ba1a299c 1011// uses data from graphbuffer
f3bf15e4 1012// adjusted to take char parameter for type of modulation to find the clock - by marshmellow.
7fe9b0b7 1013int CmdDetectClockRate(const char *Cmd)
1014{
f3bf15e4 1015 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 1016 if (strlen(Cmd) > 6 || strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H')
1017 return usage_data_detectclock();
1018
1019 int ans = 0;
1020 switch ( cmdp ) {
1021 case 'a' :
1022 case 'A' :
1023 ans = GetAskClock(Cmd+1, true, false);
1024 break;
1025 case 'f' :
1026 case 'F' :
1027 ans = GetFskClock("", true, false);
1028 break;
1029 case 'n' :
1030 case 'N' :
1031 ans = GetNrzClock("", true, false);
1032 break;
1033 case 'p' :
1034 case 'P' :
1035 ans = GetPskClock("", true, false);
1036 break;
1037 default :
1038 PrintAndLog ("Please specify a valid modulation to detect the clock of - see option h for help");
1039 break;
f3bf15e4 1040 }
1041 return ans;
7fe9b0b7 1042}
66707a3b 1043
2767fc02 1044char *GetFSKType(uint8_t fchigh, uint8_t fclow, uint8_t invert)
1045{
98b2a3a1 1046 static char fType[8];
1047 memset(fType, 0x00, 8);
1048 char *fskType = fType;
2767fc02 1049 if (fchigh==10 && fclow==8){
1050 if (invert) //fsk2a
1fe0992d 1051 memcpy(fskType, "FSK2a", 5);
2767fc02 1052 else //fsk2
1fe0992d 1053 memcpy(fskType, "FSK2", 4);
2767fc02 1054 } else if (fchigh == 8 && fclow == 5) {
1055 if (invert)
1fe0992d 1056 memcpy(fskType, "FSK1", 4);
2767fc02 1057 else
1fe0992d 1058 memcpy(fskType, "FSK1a", 5);
2767fc02 1059 } else {
1fe0992d 1060 memcpy(fskType, "FSK??", 5);
2767fc02 1061 }
1062 return fskType;
1063}
1064
2fc2150e 1065//by marshmellow
eb191de6 1066//fsk raw demod and print binary
6de43508 1067//takes 4 arguments - Clock, invert, fchigh, fclow
1068//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
4ac906d1 1069int FSKrawDemod(const char *Cmd, bool verbose)
b3b70669 1070{
e0165dcf 1071 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
3f267966 1072 uint8_t rfLen, invert, fchigh, fclow;
e0165dcf 1073
3f267966 1074 //set defaults
e0165dcf 1075 //set options from parameters entered with the command
9332b857 1076 rfLen = param_get8(Cmd, 0);
1077 invert = param_get8(Cmd, 1);
1078 fchigh = param_get8(Cmd, 2);
1079 fclow = param_get8(Cmd, 3);
e0165dcf 1080 if (strlen(Cmd)>0 && strlen(Cmd)<=2) {
98b2a3a1 1081 if (rfLen==1) {
2eec55c8 1082 invert = 1; //if invert option only is used
e0165dcf 1083 rfLen = 0;
98b2a3a1 1084 }
e0165dcf 1085 }
1086
1087 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1088 size_t BitLen = getFromGraphBuf(BitStream);
1089 if (BitLen==0) return 0;
1090 //get field clock lengths
98b2a3a1 1091 uint16_t fcs=0;
bf32dd92 1092 if (!fchigh || !fclow) {
98b2a3a1 1093 fcs = countFC(BitStream, BitLen, 1);
1094 if (!fcs) {
1095 fchigh = 10;
1096 fclow = 8;
1097 } else {
1098 fchigh = (fcs >> 8) & 0x00FF;
1099 fclow = fcs & 0x00FF;
e0165dcf 1100 }
1101 }
1102 //get bit clock length
98b2a3a1 1103 if (!rfLen) {
e0165dcf 1104 rfLen = detectFSKClk(BitStream, BitLen, fchigh, fclow);
bf32dd92 1105 if (!rfLen) rfLen = 50;
e0165dcf 1106 }
3f267966 1107 int size = fskdemod(BitStream, BitLen, rfLen, invert, fchigh, fclow);
98b2a3a1 1108 if (size > 0) {
3f267966 1109 setDemodBuf(BitStream, size, 0);
e0165dcf 1110
1111 // Now output the bitstream to the scrollback by line of 16 bits
2767fc02 1112 if (verbose || g_debugMode) {
98b2a3a1 1113 PrintAndLog("\nUsing Clock:%u, invert:%u, fchigh:%u, fclow:%u", (unsigned int)rfLen, (unsigned int)invert, (unsigned int)fchigh, (unsigned int)fclow);
3f267966 1114 PrintAndLog("%s decoded bitstream:", GetFSKType(fchigh, fclow, invert));
2767fc02 1115 printDemodBuff();
e0165dcf 1116 }
bf32dd92 1117
e0165dcf 1118 return 1;
3f267966 1119 } else {
2767fc02 1120 if (g_debugMode) PrintAndLog("no FSK data found");
e0165dcf 1121 }
1122 return 0;
b3b70669 1123}
1124
4ac906d1 1125//by marshmellow
1126//fsk raw demod and print binary
1127//takes 4 arguments - Clock, invert, fchigh, fclow
1128//defaults: clock = 50, invert=1, fchigh=10, fclow=8 (RF/10 RF/8 (fsk2a))
1129int CmdFSKrawdemod(const char *Cmd)
1130{
e0165dcf 1131 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 1132 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1133 return usage_data_rawdemod_fs();
1134
e0165dcf 1135 return FSKrawDemod(Cmd, TRUE);
4ac906d1 1136}
1137
eb191de6 1138//by marshmellow (based on existing demod + holiman's refactor)
1139//HID Prox demod - FSK RF/50 with preamble of 00011101 (then manchester encoded)
1140//print full HID Prox ID and some bit format details if found
b3b70669 1141int CmdFSKdemodHID(const char *Cmd)
1142{
e0165dcf 1143 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1144 uint32_t hi2=0, hi=0, lo=0;
1145
1146 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1147 size_t BitLen = getFromGraphBuf(BitStream);
1148 if (BitLen==0) return 0;
1149 //get binary from fsk wave
1150 int idx = HIDdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1151 if (idx<0){
1152 if (g_debugMode){
1153 if (idx==-1){
1154 PrintAndLog("DEBUG: Just Noise Detected");
1155 } else if (idx == -2) {
1156 PrintAndLog("DEBUG: Error demoding fsk");
1157 } else if (idx == -3) {
1158 PrintAndLog("DEBUG: Preamble not found");
1159 } else if (idx == -4) {
1160 PrintAndLog("DEBUG: Error in Manchester data, SIZE: %d", BitLen);
1161 } else {
1162 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1163 }
1164 }
1165 return 0;
1166 }
1167 if (hi2==0 && hi==0 && lo==0) {
1168 if (g_debugMode) PrintAndLog("DEBUG: Error - no values found");
1169 return 0;
1170 }
1171 if (hi2 != 0){ //extra large HID tags
1172 PrintAndLog("HID Prox TAG ID: %x%08x%08x (%d)",
1173 (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF);
1174 }
1175 else { //standard HID tags <38 bits
1176 uint8_t fmtLen = 0;
1177 uint32_t fc = 0;
1178 uint32_t cardnum = 0;
1179 if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used
1180 uint32_t lo2=0;
1181 lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit
1182 uint8_t idx3 = 1;
1183 while(lo2>1){ //find last bit set to 1 (format len bit)
1184 lo2=lo2>>1;
1185 idx3++;
1186 }
1187 fmtLen =idx3+19;
1188 fc =0;
1189 cardnum=0;
1190 if(fmtLen==26){
1191 cardnum = (lo>>1)&0xFFFF;
1192 fc = (lo>>17)&0xFF;
1193 }
1194 if(fmtLen==34){
1195 cardnum = (lo>>1)&0xFFFF;
1196 fc= ((hi&1)<<15)|(lo>>17);
1197 }
1198 if(fmtLen==35){
1199 cardnum = (lo>>1)&0xFFFFF;
1200 fc = ((hi&1)<<11)|(lo>>21);
1201 }
1202 }
1203 else { //if bit 38 is not set then 37 bit format is used
1204 fmtLen = 37;
1205 fc = 0;
1206 cardnum = 0;
1207 if(fmtLen == 37){
1208 cardnum = (lo>>1)&0x7FFFF;
1209 fc = ((hi&0xF)<<12)|(lo>>20);
1210 }
1211 }
1212 PrintAndLog("HID Prox TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d",
1213 (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF,
1214 (unsigned int) fmtLen, (unsigned int) fc, (unsigned int) cardnum);
1215 }
1216 setDemodBuf(BitStream,BitLen,idx);
1217 if (g_debugMode){
1218 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, BitLen);
1219 printDemodBuff();
1220 }
1221 return 1;
ec75f5c1 1222}
1223
04d2721b 1224//by marshmellow
1225//Paradox Prox demod - FSK RF/50 with preamble of 00001111 (then manchester encoded)
ec75f5c1 1226//print full Paradox Prox ID and some bit format details if found
1227int CmdFSKdemodParadox(const char *Cmd)
1228{
e0165dcf 1229 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1230 uint32_t hi2=0, hi=0, lo=0;
1231
1232 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1233 size_t BitLen = getFromGraphBuf(BitStream);
1234 if (BitLen==0) return 0;
1235 //get binary from fsk wave
1236 int idx = ParadoxdemodFSK(BitStream,&BitLen,&hi2,&hi,&lo);
1237 if (idx<0){
1238 if (g_debugMode){
1239 if (idx==-1){
1240 PrintAndLog("DEBUG: Just Noise Detected");
1241 } else if (idx == -2) {
1242 PrintAndLog("DEBUG: Error demoding fsk");
1243 } else if (idx == -3) {
1244 PrintAndLog("DEBUG: Preamble not found");
1245 } else if (idx == -4) {
1246 PrintAndLog("DEBUG: Error in Manchester data");
1247 } else {
1248 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1249 }
1250 }
1251 return 0;
1252 }
1253 if (hi2==0 && hi==0 && lo==0){
1254 if (g_debugMode) PrintAndLog("DEBUG: Error - no value found");
1255 return 0;
1256 }
1257 uint32_t fc = ((hi & 0x3)<<6) | (lo>>26);
1258 uint32_t cardnum = (lo>>10)&0xFFFF;
1259 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1260 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1261 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1262
1263 PrintAndLog("Paradox TAG ID: %x%08x - FC: %d - Card: %d - Checksum: %02x - RAW: %08x%08x%08x",
1264 hi>>10, (hi & 0x3)<<26 | (lo>>10), fc, cardnum, (lo>>2) & 0xFF, rawHi2, rawHi, rawLo);
1265 setDemodBuf(BitStream,BitLen,idx);
1266 if (g_debugMode){
1267 PrintAndLog("DEBUG: idx: %d, len: %d, Printing Demod Buffer:", idx, BitLen);
1268 printDemodBuff();
1269 }
1270 return 1;
b3b70669 1271}
1272
2fc2150e 1273//by marshmellow
eb191de6 1274//IO-Prox demod - FSK RF/64 with preamble of 000000001
1275//print ioprox ID and some format details
b3b70669 1276int CmdFSKdemodIO(const char *Cmd)
1277{
e0165dcf 1278 int idx=0;
1279 //something in graphbuffer?
1280 if (GraphTraceLen < 65) {
1281 if (g_debugMode)PrintAndLog("DEBUG: not enough samples in GraphBuffer");
1282 return 0;
1283 }
1284 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1285 size_t BitLen = getFromGraphBuf(BitStream);
1286 if (BitLen==0) return 0;
1287
1288 //get binary from fsk wave
1289 idx = IOdemodFSK(BitStream,BitLen);
1290 if (idx<0){
1291 if (g_debugMode){
1292 if (idx==-1){
1293 PrintAndLog("DEBUG: Just Noise Detected");
1294 } else if (idx == -2) {
1295 PrintAndLog("DEBUG: not enough samples");
1296 } else if (idx == -3) {
1297 PrintAndLog("DEBUG: error during fskdemod");
1298 } else if (idx == -4) {
1299 PrintAndLog("DEBUG: Preamble not found");
1300 } else if (idx == -5) {
1301 PrintAndLog("DEBUG: Separator bits not found");
1302 } else {
1303 PrintAndLog("DEBUG: Error demoding fsk %d", idx);
1304 }
1305 }
1306 return 0;
1307 }
1308 if (idx==0){
2767fc02 1309 if (g_debugMode){
e0165dcf 1310 PrintAndLog("DEBUG: IO Prox Data not found - FSK Bits: %d",BitLen);
2767fc02 1311 if (BitLen > 92) PrintAndLog("%s", sprint_bin_break(BitStream,92,16));
e0165dcf 1312 }
1313 return 0;
1314 }
1315 //Index map
1316 //0 10 20 30 40 50 60
1317 //| | | | | | |
1318 //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23
1319 //-----------------------------------------------------------------------------
1320 //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11
1321 //
1322 //XSF(version)facility:codeone+codetwo (raw)
1323 //Handle the data
1324 if (idx+64>BitLen) {
2767fc02 1325 if (g_debugMode) PrintAndLog("not enough bits found - bitlen: %d",BitLen);
e0165dcf 1326 return 0;
1327 }
1328 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]);
1329 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]);
1330 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]);
1331 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]);
1332 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]);
1333 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]);
1334 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]);
1335
1336 uint32_t code = bytebits_to_byte(BitStream+idx,32);
1337 uint32_t code2 = bytebits_to_byte(BitStream+idx+32,32);
1338 uint8_t version = bytebits_to_byte(BitStream+idx+27,8); //14,4
1339 uint8_t facilitycode = bytebits_to_byte(BitStream+idx+18,8) ;
1340 uint16_t number = (bytebits_to_byte(BitStream+idx+36,8)<<8)|(bytebits_to_byte(BitStream+idx+45,8)); //36,9
1341 uint8_t crc = bytebits_to_byte(BitStream+idx+54,8);
1342 uint16_t calccrc = 0;
1343
1344 for (uint8_t i=1; i<6; ++i){
1345 calccrc += bytebits_to_byte(BitStream+idx+9*i,8);
e0165dcf 1346 }
1347 calccrc &= 0xff;
1348 calccrc = 0xff - calccrc;
1349
1350 char *crcStr = (crc == calccrc) ? "crc ok": "!crc";
1351
1352 PrintAndLog("IO Prox XSF(%02d)%02x:%05d (%08x%08x) [%02x %s]",version,facilitycode,number,code,code2, crc, crcStr);
1353 setDemodBuf(BitStream,64,idx);
1354 if (g_debugMode){
1355 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing demod buffer:",idx,64);
1356 printDemodBuff();
1357 }
1358 return 1;
b3b70669 1359}
1e090a61 1360
1e090a61 1361//by marshmellow
1362//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
1363//print full AWID Prox ID and some bit format details if found
1364int CmdFSKdemodAWID(const char *Cmd)
1365{
e0165dcf 1366 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1367 size_t size = getFromGraphBuf(BitStream);
1368 if (size==0) return 0;
1369
1370 //get binary from fsk wave
1371 int idx = AWIDdemodFSK(BitStream, &size);
1372 if (idx<=0){
eb891c38 1373 if (g_debugMode){
e0165dcf 1374 if (idx == -1)
1375 PrintAndLog("DEBUG: Error - not enough samples");
1376 else if (idx == -2)
1377 PrintAndLog("DEBUG: Error - only noise found");
1378 else if (idx == -3)
1379 PrintAndLog("DEBUG: Error - problem during FSK demod");
1380 else if (idx == -4)
1381 PrintAndLog("DEBUG: Error - AWID preamble not found");
1382 else if (idx == -5)
1383 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1384 else
1385 PrintAndLog("DEBUG: Error %d",idx);
1386 }
1387 return 0;
1388 }
1389
1390 // Index map
1391 // 0 10 20 30 40 50 60
1392 // | | | | | | |
1393 // 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
1394 // -----------------------------------------------------------------------------
70459879 1395 // 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
e0165dcf 1396 // 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
1397 // |---26 bit---| |-----117----||-------------142-------------|
1398 // b = format bit len, o = odd parity of last 3 bits
1399 // f = facility code, c = card number
1400 // w = wiegand parity
1401 // (26 bit format shown)
1e090a61 1402
e0165dcf 1403 //get raw ID before removing parities
1404 uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
1405 uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
1406 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
1407 setDemodBuf(BitStream,96,idx);
1408
1409 size = removeParity(BitStream, idx+8, 4, 1, 88);
1410 if (size != 66){
eb891c38 1411 if (g_debugMode) PrintAndLog("DEBUG: Error - at parity check-tag size does not match AWID format");
e0165dcf 1412 return 0;
1413 }
1414 // ok valid card found!
1415
1416 // Index map
1417 // 0 10 20 30 40 50 60
1418 // | | | | | | |
1419 // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
1420 // -----------------------------------------------------------------------------
1421 // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
1422 // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1423 // |26 bit| |-117--| |-----142------|
204b7084 1424 //
6a4271d1 1425 // 00110010 0 0000111110100000 00000000000100010010100010000111 1 000000000
1426 // bbbbbbbb w ffffffffffffffff cccccccccccccccccccccccccccccccc w xxxxxxxxx
1427 // |50 bit| |----4000------| |-----------2248975------------|
e0165dcf 1428 // b = format bit len, o = odd parity of last 3 bits
1429 // f = facility code, c = card number
1430 // w = wiegand parity
e0165dcf 1431
1432 uint32_t fc = 0;
1433 uint32_t cardnum = 0;
1434 uint32_t code1 = 0;
1435 uint32_t code2 = 0;
204b7084 1436 uint8_t fmtLen = bytebits_to_byte(BitStream, 8);
1437 switch(fmtLen) {
1438 case 26:
1439 fc = bytebits_to_byte(BitStream + 9, 8);
1440 cardnum = bytebits_to_byte(BitStream + 17, 16);
1441 code1 = bytebits_to_byte(BitStream + 8,fmtLen);
6a4271d1 1442 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
204b7084 1443 break;
1444 case 50:
1445 fc = bytebits_to_byte(BitStream + 9, 16);
1446 cardnum = bytebits_to_byte(BitStream + 25, 32);
1447 code1 = bytebits_to_byte(BitStream + 8, (fmtLen-32) );
1448 code2 = bytebits_to_byte(BitStream + 8 + (fmtLen-32), 32);
6a4271d1 1449 PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %u - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, fc, cardnum, code1, code2, rawHi2, rawHi, rawLo);
204b7084 1450 break;
1451 default:
1452 if (fmtLen > 32 ) {
1453 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1454 code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
1455 code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
6a4271d1 1456 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x%08x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
204b7084 1457 } else {
1458 cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
1459 code1 = bytebits_to_byte(BitStream+8,fmtLen);
6a4271d1 1460 PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%u) - Wiegand: %x, Raw: %08x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
204b7084 1461 }
1462 break;
e0165dcf 1463 }
204b7084 1464
e0165dcf 1465 if (g_debugMode){
1466 PrintAndLog("DEBUG: idx: %d, Len: %d Printing Demod Buffer:", idx, 96);
1467 printDemodBuff();
1468 }
e0165dcf 1469 return 1;
1e090a61 1470}
1471
1472//by marshmellow
1473//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
1474//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
1475int CmdFSKdemodPyramid(const char *Cmd)
1476{
e0165dcf 1477 //raw fsk demod no manchester decoding no start bit finding just get binary from wave
1478 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1479 size_t size = getFromGraphBuf(BitStream);
1480 if (size==0) return 0;
1481
1482 //get binary from fsk wave
1483 int idx = PyramiddemodFSK(BitStream, &size);
1484 if (idx < 0){
eb891c38 1485 if (g_debugMode){
e0165dcf 1486 if (idx == -5)
1487 PrintAndLog("DEBUG: Error - not enough samples");
1488 else if (idx == -1)
1489 PrintAndLog("DEBUG: Error - only noise found");
1490 else if (idx == -2)
1491 PrintAndLog("DEBUG: Error - problem during FSK demod");
1492 else if (idx == -3)
1493 PrintAndLog("DEBUG: Error - Size not correct: %d", size);
1494 else if (idx == -4)
1495 PrintAndLog("DEBUG: Error - Pyramid preamble not found");
1496 else
1497 PrintAndLog("DEBUG: Error - idx: %d",idx);
1498 }
1499 return 0;
1500 }
1501 // Index map
1502 // 0 10 20 30 40 50 60
1503 // | | | | | | |
1504 // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
1505 // -----------------------------------------------------------------------------
1506 // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
1507 // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
1508
1509 // 64 70 80 90 100 110 120
1510 // | | | | | | |
1511 // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
1512 // -----------------------------------------------------------------------------
1513 // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
1514 // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
1515 // |---115---||---------71---------|
1516 // s = format start bit, o = odd parity of last 7 bits
1517 // f = facility code, c = card number
1518 // w = wiegand parity, x = extra space for other formats
71cb7328 1519 // p = CRC8maxim checksum
e0165dcf 1520 // (26 bit format shown)
1521
1522 //get bytes for checksum calc
1523 uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
1524 uint8_t csBuff[14] = {0x00};
1525 for (uint8_t i = 0; i < 13; i++){
1526 csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
1527 }
1528 //check checksum calc
1529 //checksum calc thanks to ICEMAN!!
1530 uint32_t checkCS = CRC8Maxim(csBuff,13);
1531
1532 //get raw ID before removing parities
1533 uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
1534 uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
1535 uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
1536 uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
1537 setDemodBuf(BitStream,128,idx);
1538
1539 size = removeParity(BitStream, idx+8, 8, 1, 120);
1540 if (size != 105){
eb891c38 1541 if (g_debugMode)
e0165dcf 1542 PrintAndLog("DEBUG: Error at parity check - tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
1543 return 0;
1544 }
1545
1546 // ok valid card found!
1547
1548 // Index map
1549 // 0 10 20 30 40 50 60 70
1550 // | | | | | | | |
1551 // 01234567890123456789012345678901234567890123456789012345678901234567890
1552 // -----------------------------------------------------------------------
1553 // 00000000000000000000000000000000000000000000000000000000000000000000000
1554 // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
1555
1556 // 71 80 90 100
1557 // | | | |
1558 // 1 2 34567890 1234567890123456 7 8901234
1559 // ---------------------------------------
1560 // 1 1 01110011 0000000001000110 0 1001010
1561 // s w ffffffff cccccccccccccccc w ppppppp
1562 // |--115-| |------71------|
1563 // s = format start bit, o = odd parity of last 7 bits
1564 // f = facility code, c = card number
1565 // w = wiegand parity, x = extra space for other formats
71cb7328 1566 // p = CRC8-Maxim checksum
e0165dcf 1567 // (26 bit format shown)
1568
1569 //find start bit to get fmtLen
1570 int j;
71cb7328 1571 for (j=0; j < size; ++j){
e0165dcf 1572 if(BitStream[j]) break;
1573 }
71cb7328 1574
e0165dcf 1575 uint8_t fmtLen = size-j-8;
1576 uint32_t fc = 0;
1577 uint32_t cardnum = 0;
1578 uint32_t code1 = 0;
71cb7328 1579
1580 if ( fmtLen == 26 ){
e0165dcf 1581 fc = bytebits_to_byte(BitStream+73, 8);
1582 cardnum = bytebits_to_byte(BitStream+81, 16);
1583 code1 = bytebits_to_byte(BitStream+72,fmtLen);
1584 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);
71cb7328 1585 } else if (fmtLen == 45) {
1586 fmtLen = 42; //end = 10 bits not 7 like 26 bit fmt
e0165dcf 1587 fc = bytebits_to_byte(BitStream+53, 10);
1588 cardnum = bytebits_to_byte(BitStream+63, 32);
1589 PrintAndLog("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
1590 } else {
1591 cardnum = bytebits_to_byte(BitStream+81, 16);
4b3655e7 1592 PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
e0165dcf 1593 }
1594 if (checksum == checkCS)
1595 PrintAndLog("Checksum %02x passed", checksum);
1596 else
1597 PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
1598
1599 if (g_debugMode){
1600 PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
1601 printDemodBuff();
1602 }
1603 return 1;
1e090a61 1604}
1605
ad6219fc 1606// FDX-B ISO11784/85 demod (aka animal tag) BIPHASE, inverted, rf/32, with preamble of 00000000001 (128bits)
7f96433c 1607// 8 databits + 1 parity (1)
0df669a2 1608// CIITT 16 chksum
1609// NATIONAL CODE, ICAR database
ad6219fc 1610// COUNTRY CODE (ISO3166) or http://cms.abvma.ca/uploads/ManufacturersISOsandCountryCodes.pdf
0df669a2 1611// FLAG (animal/non-animal)
22a6a62f 1612/*
161338 IDbits
161410 country code
16151 extra app bit
161614 reserved bits
16171 animal bit
161816 ccitt CRC chksum over 64bit ID CODE.
161924 appli bits.
1620
ad6219fc 1621-- sample: 985121004515220 [ 37FF65B88EF94 ]
22a6a62f 1622*/
ad6219fc 1623int CmdFDXBdemodBI(const char *Cmd){
7f96433c 1624
1625 int invert = 1;
1626 int clk = 32;
1627 int errCnt = 0;
ad6219fc 1628 int maxErr = 0;
7f96433c 1629 uint8_t BitStream[MAX_DEMOD_BUF_LEN];
1630 size_t size = getFromGraphBuf(BitStream);
1631
ad6219fc 1632 errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);
1633 if ( errCnt < 0 || errCnt > maxErr ) {
a71ece51 1634 if (g_debugMode) PrintAndLog("DEBUG: no data or error found %d, clock: %d", errCnt, clk);
0df669a2 1635 return 0;
1636 }
615f21dd 1637
ad6219fc 1638 errCnt = BiphaseRawDecode(BitStream, &size, maxErr, 1);
1639 if (errCnt < 0 || errCnt > maxErr ) {
7f96433c 1640 if (g_debugMode) PrintAndLog("Error BiphaseRawDecode: %d", errCnt);
0df669a2 1641 return 0;
7f96433c 1642 }
0df669a2 1643
ad6219fc 1644 int preambleIndex = FDXBdemodBI(BitStream, &size);
7f96433c 1645 if (preambleIndex < 0){
ad6219fc 1646 if (g_debugMode) PrintAndLog("Error FDXBDemod , no startmarker found :: %d",preambleIndex);
7f96433c 1647 return 0;
1648 }
6426f6ba 1649 if (size != 128) {
1650 if (g_debugMode) PrintAndLog("Error incorrect data length found");
1651 return 0;
1652 }
0df669a2 1653
ad6219fc 1654 setDemodBuf(BitStream, 128, preambleIndex);
7f96433c 1655
b10a759f 1656 // remove marker bits (1's every 9th digit after preamble) (pType = 2)
a71ece51 1657 size = removeParity(BitStream, preambleIndex + 11, 9, 2, 117);
b10a759f 1658 if ( size != 104 ) {
ad6219fc 1659 if (g_debugMode) PrintAndLog("Error removeParity:: %d", size);
1660 return 0;
0df669a2 1661 }
ad6219fc 1662 if (g_debugMode) {
1663 char *bin = sprint_bin_break(BitStream,size,16);
1664 PrintAndLog("DEBUG BinStream:\n%s",bin);
1665 }
1666 PrintAndLog("\nFDX-B / ISO 11784/5 Animal Tag ID Found:");
a71ece51 1667 if (g_debugMode) PrintAndLog("Start marker %d; Size %d", preambleIndex, size);
ad6219fc 1668
a71ece51 1669 //got a good demod
ad6219fc 1670 uint64_t NationalCode = ((uint64_t)(bytebits_to_byteLSBF(BitStream+32,6)) << 32) | bytebits_to_byteLSBF(BitStream,32);
1671 uint32_t countryCode = bytebits_to_byteLSBF(BitStream+38,10);
1672 uint8_t dataBlockBit = BitStream[48];
1673 uint32_t reservedCode = bytebits_to_byteLSBF(BitStream+49,14);
1674 uint8_t animalBit = BitStream[63];
a71ece51 1675 uint32_t crc16 = bytebits_to_byteLSBF(BitStream+64,16);
ad6219fc 1676 uint32_t extended = bytebits_to_byteLSBF(BitStream+80,24);
1677
a71ece51 1678 uint64_t rawid = ((uint64_t)bytebits_to_byte(BitStream,32)<<32) | bytebits_to_byte(BitStream+32,32);
ad6219fc 1679 uint8_t raw[8];
1680 num_to_bytes(rawid, 8, raw);
a71ece51 1681
1682 if (g_debugMode) PrintAndLog("Raw ID Hex: %s", sprint_hex(raw,8));
1683
1684 uint16_t calcCrc = crc16_ccitt_kermit(raw, 8);
1685 PrintAndLog("Animal ID: %04u-%012llu", countryCode, NationalCode);
ad6219fc 1686 PrintAndLog("National Code: %012llu", NationalCode);
a71ece51 1687 PrintAndLog("CountryCode: %04u", countryCode);
ad6219fc 1688 PrintAndLog("Extended Data: %s", dataBlockBit ? "True" : "False");
1689 PrintAndLog("reserved Code: %u", reservedCode);
1690 PrintAndLog("Animal Tag: %s", animalBit ? "True" : "False");
a71ece51 1691 PrintAndLog("CRC: 0x%04X - [%04X] - %s", crc16, calcCrc, (calcCrc == crc16) ? "Passed" : "Failed");
1692 PrintAndLog("Extended: 0x%X\n", extended);
ad6219fc 1693
615f21dd 1694 return 1;
1695}
1696
1697
e770c648 1698//by marshmellow
1699//attempt to psk1 demod graph buffer
4ac906d1 1700int PSKDemod(const char *Cmd, bool verbose)
e770c648 1701{
e0165dcf 1702 int invert=0;
1703 int clk=0;
1704 int maxErr=100;
1705 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1706 if (clk==1){
1707 invert=1;
1708 clk=0;
1709 }
1710 if (invert != 0 && invert != 1) {
24344f28 1711 if (g_debugMode || verbose) PrintAndLog("Invalid argument: %s", Cmd);
e0165dcf 1712 return 0;
1713 }
1714 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1715 size_t BitLen = getFromGraphBuf(BitStream);
2ec87733 1716 if (BitLen==0) return 0;
2eec55c8 1717 uint8_t carrier=countFC(BitStream, BitLen, 0);
e0165dcf 1718 if (carrier!=2 && carrier!=4 && carrier!=8){
1719 //invalid carrier
1720 return 0;
1721 }
6426f6ba 1722 if (g_debugMode){
1723 PrintAndLog("Carrier: rf/%d",carrier);
1724 }
e0165dcf 1725 int errCnt=0;
1726 errCnt = pskRawDemod(BitStream, &BitLen, &clk, &invert);
1727 if (errCnt > maxErr){
2767fc02 1728 if (g_debugMode || verbose) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1729 return 0;
1730 }
1731 if (errCnt<0|| BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
2767fc02 1732 if (g_debugMode || verbose) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
e0165dcf 1733 return 0;
1734 }
2767fc02 1735 if (verbose || g_debugMode){
1736 PrintAndLog("\nUsing Clock:%d, invert:%d, Bits Found:%d",clk,invert,BitLen);
e0165dcf 1737 if (errCnt>0){
2767fc02 1738 PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1739 }
1740 }
1741 //prime demod buffer for output
1742 setDemodBuf(BitStream,BitLen,0);
1743 return 1;
4118b74d 1744}
e770c648 1745
4118b74d 1746// Indala 26 bit decode
1747// by marshmellow
1748// optional arguments - same as CmdpskNRZrawDemod (clock & invert)
1749int CmdIndalaDecode(const char *Cmd)
1750{
b4fb11ba 1751 int ans;
1752 if (strlen(Cmd)>0){
1753 ans = PSKDemod(Cmd, 0);
1754 } else{ //default to RF/32
1755 ans = PSKDemod("32", 0);
1756 }
4118b74d 1757
7a8a982b 1758 if (!ans){
eb891c38 1759 if (g_debugMode)
b4fb11ba 1760 PrintAndLog("Error1: %d",ans);
ba1a299c 1761 return 0;
1762 }
56d0fb8e 1763
1764 uint8_t invert = 0;
57c7b44b 1765 size_t size = DemodBufferLen;
eb891c38 1766 int startIdx = indala26decode(DemodBuffer, &size, &invert);
1767 if (startIdx < 0 || size > 224) {
1768 if (g_debugMode)
b4fb11ba 1769 PrintAndLog("Error2: %d",ans);
ba1a299c 1770 return -1;
1771 }
eb891c38 1772 setDemodBuf(DemodBuffer, size, (size_t)startIdx);
84871873 1773 if (invert)
eb891c38 1774 if (g_debugMode)
e0165dcf 1775 PrintAndLog("Had to invert bits");
ec75f5c1 1776
57c7b44b 1777 PrintAndLog("BitLen: %d",DemodBufferLen);
ba1a299c 1778 //convert UID to HEX
1779 uint32_t uid1, uid2, uid3, uid4, uid5, uid6, uid7;
57c7b44b 1780 uid1=bytebits_to_byte(DemodBuffer,32);
1781 uid2=bytebits_to_byte(DemodBuffer+32,32);
ba1a299c 1782 if (DemodBufferLen==64){
52f2df61 1783 PrintAndLog("Indala UID=%s (%x%08x)", sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2);
6426f6ba 1784 } else {
57c7b44b 1785 uid3=bytebits_to_byte(DemodBuffer+64,32);
1786 uid4=bytebits_to_byte(DemodBuffer+96,32);
1787 uid5=bytebits_to_byte(DemodBuffer+128,32);
1788 uid6=bytebits_to_byte(DemodBuffer+160,32);
1789 uid7=bytebits_to_byte(DemodBuffer+192,32);
1790 PrintAndLog("Indala UID=%s (%x%08x%08x%08x%08x%08x%08x)",
52f2df61 1791 sprint_bin_break(DemodBuffer,DemodBufferLen,16), uid1, uid2, uid3, uid4, uid5, uid6, uid7);
ba1a299c 1792 }
b4fb11ba 1793 if (g_debugMode){
1794 PrintAndLog("DEBUG: printing demodbuffer:");
1795 printDemodBuff();
1796 }
ba1a299c 1797 return 1;
4118b74d 1798}
1799
411105e0 1800int CmdPSKNexWatch(const char *Cmd)
1801{
1802 if (!PSKDemod("", false)) return 0;
56d0fb8e 1803
411105e0 1804 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};
1805 size_t startIdx = 0, size = DemodBufferLen;
56d0fb8e 1806
1807 // sanity check.
1808 if ( size < sizeof(preamble) + 100) return 0;
1809
411105e0 1810 bool invert = false;
1811 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)){
1812 // if didn't find preamble try again inverting
1813 if (!PSKDemod("1", false)) return 0;
56d0fb8e 1814
411105e0 1815 size = DemodBufferLen;
1816 if (!preambleSearch(DemodBuffer, preamble, sizeof(preamble), &size, &startIdx)) return 0;
1817 invert = true;
1818 }
1819 if (size != 128) return 0;
1820 setDemodBuf(DemodBuffer, size, startIdx+4);
1821 startIdx = 8+32; //4 = extra i added, 8 = preamble, 32 = reserved bits (always 0)
1822 //get ID
1823 uint32_t ID = 0;
1824 for (uint8_t wordIdx=0; wordIdx<4; wordIdx++){
1825 for (uint8_t idx=0; idx<8; idx++){
1826 ID = (ID << 1) | DemodBuffer[startIdx+wordIdx+(idx*4)];
1827 }
1828 }
1829 //parity check (TBD)
1830
1831 //checksum check (TBD)
1832
1833 //output
1834 PrintAndLog("NexWatch ID: %d", ID);
1835 if (invert){
1836 PrintAndLog("Had to Invert - probably NexKey");
1837 for (uint8_t idx=0; idx<size; idx++)
1838 DemodBuffer[idx] ^= 1;
1839 }
1840
1841 CmdPrintDemodBuff("x");
1842 return 1;
1843}
1844
04d2721b 1845// by marshmellow
e770c648 1846// takes 3 arguments - clock, invert, maxErr as integers
1847// attempts to demodulate nrz only
1848// prints binary found and saves in demodbuffer for further commands
b4a2fcf6 1849int NRZrawDemod(const char *Cmd, bool verbose)
e770c648 1850{
e0165dcf 1851 int invert=0;
1852 int clk=0;
1853 int maxErr=100;
1854 sscanf(Cmd, "%i %i %i", &clk, &invert, &maxErr);
1855 if (clk==1){
1856 invert=1;
1857 clk=0;
1858 }
1859 if (invert != 0 && invert != 1) {
1860 PrintAndLog("Invalid argument: %s", Cmd);
1861 return 0;
1862 }
1863 uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
1864 size_t BitLen = getFromGraphBuf(BitStream);
1865 if (BitLen==0) return 0;
1866 int errCnt=0;
6426f6ba 1867 errCnt = nrzRawDemod(BitStream, &BitLen, &clk, &invert);
e0165dcf 1868 if (errCnt > maxErr){
1869 if (g_debugMode) PrintAndLog("Too many errors found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1870 return 0;
1871 }
2eec55c8 1872 if (errCnt<0 || BitLen<16){ //throw away static - allow 1 and -1 (in case of threshold command first)
e0165dcf 1873 if (g_debugMode) PrintAndLog("no data found, clk: %d, invert: %d, numbits: %d, errCnt: %d",clk,invert,BitLen,errCnt);
1874 return 0;
1875 }
1876 if (verbose || g_debugMode) PrintAndLog("Tried NRZ Demod using Clock: %d - invert: %d - Bits Found: %d",clk,invert,BitLen);
1877 //prime demod buffer for output
1878 setDemodBuf(BitStream,BitLen,0);
1879
2767fc02 1880 if (errCnt>0 && (verbose || g_debugMode)) PrintAndLog("# Errors during Demoding (shown as 7 in bit stream): %d",errCnt);
e0165dcf 1881 if (verbose || g_debugMode) {
1882 PrintAndLog("NRZ demoded bitstream:");
1883 // Now output the bitstream to the scrollback by line of 16 bits
1884 printDemodBuff();
1885 }
1886 return 1;
b4a2fcf6 1887}
1888
1889int CmdNRZrawDemod(const char *Cmd)
1890{
e0165dcf 1891 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 1892 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1893 return usage_data_rawdemod_nr();
1894
e0165dcf 1895 return NRZrawDemod(Cmd, TRUE);
e770c648 1896}
1897
1898// by marshmellow
1899// takes 3 arguments - clock, invert, maxErr as integers
04d2721b 1900// attempts to demodulate psk only
1901// prints binary found and saves in demodbuffer for further commands
e770c648 1902int CmdPSK1rawDemod(const char *Cmd)
4118b74d 1903{
e0165dcf 1904 int ans;
1905 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 1906 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1907 return usage_data_rawdemod_p1();
1908
e0165dcf 1909 ans = PSKDemod(Cmd, TRUE);
1910 //output
1911 if (!ans){
1912 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1913 return 0;
1914 }
2767fc02 1915 PrintAndLog("PSK1 demoded bitstream:");
e0165dcf 1916 // Now output the bitstream to the scrollback by line of 16 bits
1917 printDemodBuff();
1918 return 1;
4118b74d 1919}
1920
04d2721b 1921// by marshmellow
19ff0210 1922// takes same args as cmdpsk1rawdemod
04d2721b 1923int CmdPSK2rawDemod(const char *Cmd)
1924{
56d0fb8e 1925 int ans = 0;
e0165dcf 1926 char cmdp = param_getchar(Cmd, 0);
a0c7eea7 1927 if (strlen(Cmd) > 10 || cmdp == 'h' || cmdp == 'H')
1928 return usage_data_rawdemod_p2();
1929
56d0fb8e 1930 ans = PSKDemod(Cmd, TRUE);
e0165dcf 1931 if (!ans){
1932 if (g_debugMode) PrintAndLog("Error demoding: %d",ans);
1933 return 0;
1934 }
1935 psk1TOpsk2(DemodBuffer, DemodBufferLen);
1936 PrintAndLog("PSK2 demoded bitstream:");
1937 // Now output the bitstream to the scrollback by line of 16 bits
1938 printDemodBuff();
1939 return 1;
04d2721b 1940}
1941
19ff0210 1942// by marshmellow - combines all raw demod functions into one menu command
1943int CmdRawDemod(const char *Cmd)
1944{
1945 char cmdp = Cmd[0]; //param_getchar(Cmd, 0);
19ff0210 1946 char cmdp2 = Cmd[1];
1947 int ans = 0;
a0c7eea7 1948
1949 if (strlen(Cmd) > 20 || cmdp == 'h' || cmdp == 'H' || strlen(Cmd) < 2)
1950 return usage_data_rawdemod();
1951
1952 if (cmdp == 'f' && cmdp2 == 's')
f8f894a5 1953 ans = CmdFSKrawdemod(Cmd+2);
a0c7eea7 1954 else if(cmdp == 'a' && cmdp2 == 'b')
f8f894a5 1955 ans = Cmdaskbiphdemod(Cmd+2);
a0c7eea7 1956 else if(cmdp == 'a' && cmdp2 == 'm')
f8f894a5 1957 ans = Cmdaskmandemod(Cmd+2);
a0c7eea7 1958 else if(cmdp == 'a' && cmdp2 == 'r')
f8f894a5 1959 ans = Cmdaskrawdemod(Cmd+2);
a0c7eea7 1960 else if(cmdp == 'n' && cmdp2 == 'r')
f8f894a5 1961 ans = CmdNRZrawDemod(Cmd+2);
a0c7eea7 1962 else if(cmdp == 'p' && cmdp2 == '1')
f8f894a5 1963 ans = CmdPSK1rawDemod(Cmd+2);
a0c7eea7 1964 else if(cmdp == 'p' && cmdp2 == '2')
f8f894a5 1965 ans = CmdPSK2rawDemod(Cmd+2);
a0c7eea7 1966 else
19ff0210 1967 PrintAndLog("unknown modulation entered - see help ('h') for parameter structure");
a0c7eea7 1968
19ff0210 1969 return ans;
1970}
a0c7eea7 1971//iceman: diff sizes on the plotwindow?
7fe9b0b7 1972int CmdGrid(const char *Cmd)
1973{
e0165dcf 1974 sscanf(Cmd, "%i %i", &PlotGridX, &PlotGridY);
a0c7eea7 1975 PlotGridXdefault = PlotGridX;
1976 PlotGridYdefault = PlotGridY;
e0165dcf 1977 RepaintGraphWindow();
1978 return 0;
7fe9b0b7 1979}
1980
1981int CmdHexsamples(const char *Cmd)
1982{
e0165dcf 1983 int i, j;
1984 int requested = 0;
1985 int offset = 0;
1986 char string_buf[25];
1987 char* string_ptr = string_buf;
1988 uint8_t got[BIGBUF_SIZE];
1989
1990 sscanf(Cmd, "%i %i", &requested, &offset);
1991
1992 /* if no args send something */
1993 if (requested == 0) {
1994 requested = 8;
1995 }
1996 if (offset + requested > sizeof(got)) {
1997 PrintAndLog("Tried to read past end of buffer, <bytes> + <offset> > %d", BIGBUF_SIZE);
1998 return 0;
1999 }
2000
2001 GetFromBigBuf(got,requested,offset);
2002 WaitForResponse(CMD_ACK,NULL);
2003
2004 i = 0;
2005 for (j = 0; j < requested; j++) {
2006 i++;
2007 string_ptr += sprintf(string_ptr, "%02x ", got[j]);
2008 if (i == 8) {
2009 *(string_ptr - 1) = '\0'; // remove the trailing space
2010 PrintAndLog("%s", string_buf);
2011 string_buf[0] = '\0';
2012 string_ptr = string_buf;
2013 i = 0;
2014 }
2015 if (j == requested - 1 && string_buf[0] != '\0') { // print any remaining bytes
2016 *(string_ptr - 1) = '\0';
2017 PrintAndLog("%s", string_buf);
2018 string_buf[0] = '\0';
2019 }
2020 }
2021 return 0;
7fe9b0b7 2022}
2023
7fe9b0b7 2024int CmdHide(const char *Cmd)
2025{
e0165dcf 2026 HideGraphWindow();
2027 return 0;
7fe9b0b7 2028}
2029
78f5b1a7 2030//zero mean GraphBuffer
7fe9b0b7 2031int CmdHpf(const char *Cmd)
2032{
e0165dcf 2033 int i;
2034 int accum = 0;
7fe9b0b7 2035
e0165dcf 2036 for (i = 10; i < GraphTraceLen; ++i)
2037 accum += GraphBuffer[i];
a0c7eea7 2038
e0165dcf 2039 accum /= (GraphTraceLen - 10);
a0c7eea7 2040
e0165dcf 2041 for (i = 0; i < GraphTraceLen; ++i)
2042 GraphBuffer[i] -= accum;
7fe9b0b7 2043
e0165dcf 2044 RepaintGraphWindow();
2045 return 0;
7fe9b0b7 2046}
f6d9fb17
MHS		 2047
2048bool _headBit( BitstreamOut *stream)
2049{
2050 int bytepos = stream->position >> 3; // divide by 8
2051 int bitpos = (stream->position++) & 7; // mask out 00000111
2052 return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1;
2053}
2054
2055uint8_t getByte(uint8_t bits_per_sample, BitstreamOut* b)
2056{
2057 int i;
2058 uint8_t val = 0;
a0c7eea7 2059 for(i = 0 ; i < bits_per_sample; i++)
f6d9fb17 2060 val |= (_headBit(b) << (7-i));
a0c7eea7 2061
f6d9fb17
MHS		 2062 return val;
2063}
7fe9b0b7 2064
1fbf8956 2065int getSamples(const char *Cmd, bool silent)
7fe9b0b7 2066{
e0165dcf 2067 //If we get all but the last byte in bigbuf,
2068 // we don't have to worry about remaining trash
2069 // in the last byte in case the bits-per-sample
2070 // does not line up on byte boundaries
2071
2072 uint8_t got[BIGBUF_SIZE-1] = { 0 };
2073
2074 int n = strtol(Cmd, NULL, 0);
2075
52f2df61 2076 if ( n == 0 || n > sizeof(got))
e0165dcf 2077 n = sizeof(got);
2078
2079 PrintAndLog("Reading %d bytes from device memory\n", n);
2080 GetFromBigBuf(got,n,0);
2081 PrintAndLog("Data fetched");
2082 UsbCommand response;
c188b1b9 2083 if ( !WaitForResponseTimeout(CMD_ACK, &response, 10000) ) {
2084 PrintAndLog("timeout while waiting for reply.");
2085 return 1;
2086 }
2087
e0165dcf 2088 uint8_t bits_per_sample = 8;
2089
2090 //Old devices without this feature would send 0 at arg[0]
a0c7eea7 2091 if (response.arg[0] > 0) {
e0165dcf 2092 sample_config *sc = (sample_config *) response.d.asBytes;
52f2df61 2093 PrintAndLog("Samples @ %d bits/smpl, decimation 1:%d ", sc->bits_per_sample, sc->decimation);
e0165dcf 2094 bits_per_sample = sc->bits_per_sample;
2095 }
a0c7eea7 2096
2097 if (bits_per_sample < 8) {
e0165dcf 2098 PrintAndLog("Unpacking...");
2099 BitstreamOut bout = { got, bits_per_sample * n, 0};
2100 int j =0;
e6432f05 2101 for (j = 0; j * bits_per_sample < n * 8 && j < n; j++) {
e0165dcf 2102 uint8_t sample = getByte(bits_per_sample, &bout);
2103 GraphBuffer[j] = ((int) sample )- 128;
2104 }
2105 GraphTraceLen = j;
2106 PrintAndLog("Unpacked %d samples" , j );
a0c7eea7 2107 } else {
e0165dcf 2108 for (int j = 0; j < n; j++) {
2109 GraphBuffer[j] = ((int)got[j]) - 128;
2110 }
2111 GraphTraceLen = n;
2112 }
2113
2114 RepaintGraphWindow();
2115 return 0;
1fbf8956 2116}
2117
2118int CmdSamples(const char *Cmd)
2119{
e0165dcf 2120 return getSamples(Cmd, false);
7fe9b0b7 2121}
2122
d6a120a2
MHS		 2123int CmdTuneSamples(const char *Cmd)
2124{
3aa4014b 2125 int timeout = 0;
2126 printf("\nMeasuring antenna characteristics, please wait...");
ba1a299c 2127
c188b1b9 2128 UsbCommand c = {CMD_MEASURE_ANTENNA_TUNING, {0,0,0}};
2129 clearCommandBuffer();
3aa4014b 2130 SendCommand(&c);
3aa4014b 2131 UsbCommand resp;
a0048c69 2132 while(!WaitForResponseTimeout(CMD_MEASURED_ANTENNA_TUNING, &resp, 2000)) {
3aa4014b 2133 timeout++;
2134 printf(".");
2135 if (timeout > 7) {
2136 PrintAndLog("\nNo response from Proxmark. Aborting...");
2137 return 1;
2138 }
2139 }
2140
2141 int peakv, peakf;
2142 int vLf125, vLf134, vHf;
2143 vLf125 = resp.arg[0] & 0xffff;
2144 vLf134 = resp.arg[0] >> 16;
2145 vHf = resp.arg[1] & 0xffff;;
2146 peakf = resp.arg[2] & 0xffff;
2147 peakv = resp.arg[2] >> 16;
2148 PrintAndLog("");
d801514d 2149 if ( vLf125 > 0 )
2150 PrintAndLog("# LF antenna: %5.2f V @ 125.00 kHz", vLf125/1000.0);
2151 if ( vLf134 > 0 )
2152 PrintAndLog("# LF antenna: %5.2f V @ 134.00 kHz", vLf134/1000.0);
2153 if ( peakv > 0 && peakf > 0 )
2154 PrintAndLog("# LF optimal: %5.2f V @%9.2f kHz", peakv/1000.0, 12000.0/(peakf+1));
2155 if ( vHf > 0 )
2156 PrintAndLog("# HF antenna: %5.2f V @ 13.56 MHz", vHf/1000.0);
0d0d0499 2157
2767fc02 2158 #define LF_UNUSABLE_V 2948 // was 2000. Changed due to bugfix in voltage measurements. LF results are now 47% higher.
2159 #define LF_MARGINAL_V 14739 // was 10000. Changed due to bugfix bug in voltage measurements. LF results are now 47% higher.
2160 #define HF_UNUSABLE_V 3167 // was 2000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
2161 #define HF_MARGINAL_V 7917 // was 5000. Changed due to bugfix in voltage measurements. HF results are now 58% higher.
0d0d0499 2162
2163 if (peakv < LF_UNUSABLE_V)
3aa4014b 2164 PrintAndLog("# Your LF antenna is unusable.");
0d0d0499 2165 else if (peakv < LF_MARGINAL_V)
3aa4014b 2166 PrintAndLog("# Your LF antenna is marginal.");
0d0d0499 2167 if (vHf < HF_UNUSABLE_V)
3aa4014b 2168 PrintAndLog("# Your HF antenna is unusable.");
0d0d0499 2169 else if (vHf < HF_MARGINAL_V)
3aa4014b 2170 PrintAndLog("# Your HF antenna is marginal.");
2171
0d0d0499 2172 if (peakv >= LF_UNUSABLE_V) {
2173 for (int i = 0; i < 256; i++) {
2174 GraphBuffer[i] = resp.d.asBytes[i] - 128;
2175 }
2176 PrintAndLog("Displaying LF tuning graph. Divisor 89 is 134khz, 95 is 125khz.\n");
2177 PrintAndLog("\n");
2178 GraphTraceLen = 256;
2179 ShowGraphWindow();
abd16c45 2180 RepaintGraphWindow();
ba1a299c 2181 }
b4fb11ba 2182 return 0;
d6a120a2
MHS		 2183}
2184
7fe9b0b7 2185int CmdLoad(const char *Cmd)
2186{
e0165dcf 2187 char filename[FILE_PATH_SIZE] = {0x00};
2188 int len = 0;
b915fda3 2189
e0165dcf 2190 len = strlen(Cmd);
2191 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2192 memcpy(filename, Cmd, len);
b915fda3 2193
e0165dcf 2194 FILE *f = fopen(filename, "r");
2195 if (!f) {
c188b1b9 2196 PrintAndLog("couldn't open '%s'", filename);
e0165dcf 2197 return 0;
2198 }
2199
2200 GraphTraceLen = 0;
2201 char line[80];
2202 while (fgets(line, sizeof (line), f)) {
2203 GraphBuffer[GraphTraceLen] = atoi(line);
2204 GraphTraceLen++;
2205 }
2206 fclose(f);
2207 PrintAndLog("loaded %d samples", GraphTraceLen);
2208 RepaintGraphWindow();
2209 return 0;
7fe9b0b7 2210}
2211
2212int CmdLtrim(const char *Cmd)
2213{
e0165dcf 2214 int ds = atoi(Cmd);
c188b1b9 2215
2216 if (GraphTraceLen <= 0) return 0;
2217
e0165dcf 2218 for (int i = ds; i < GraphTraceLen; ++i)
2219 GraphBuffer[i-ds] = GraphBuffer[i];
7fe9b0b7 2220
c188b1b9 2221 GraphTraceLen -= ds;
e0165dcf 2222 RepaintGraphWindow();
2223 return 0;
7fe9b0b7 2224}
ec75f5c1 2225
2226// trim graph to input argument length
9ec1416a 2227int CmdRtrim(const char *Cmd)
2228{
e0165dcf 2229 int ds = atoi(Cmd);
e0165dcf 2230 GraphTraceLen = ds;
e0165dcf 2231 RepaintGraphWindow();
2232 return 0;
9ec1416a 2233}
7fe9b0b7 2234
7fe9b0b7 2235int CmdNorm(const char *Cmd)
2236{
e0165dcf 2237 int i;
2238 int max = INT_MIN, min = INT_MAX;
7fe9b0b7 2239
e0165dcf 2240 for (i = 10; i < GraphTraceLen; ++i) {
a0c7eea7 2241 if (GraphBuffer[i] > max) max = GraphBuffer[i];
2242 if (GraphBuffer[i] < min) min = GraphBuffer[i];
e0165dcf 2243 }
7fe9b0b7 2244
e0165dcf 2245 if (max != min) {
2246 for (i = 0; i < GraphTraceLen; ++i) {
a0c7eea7 2247 GraphBuffer[i] = (GraphBuffer[i] - ((max + min) / 2)) * 256 / (max - min);
2248 //marshmelow: adjusted *1000 to *256 to make +/- 128 so demod commands still work
e0165dcf 2249 }
2250 }
2251 RepaintGraphWindow();
2252 return 0;
7fe9b0b7 2253}
2254
2255int CmdPlot(const char *Cmd)
2256{
e0165dcf 2257 ShowGraphWindow();
2258 return 0;
7fe9b0b7 2259}
2260
2261int CmdSave(const char *Cmd)
2262{
e0165dcf 2263 char filename[FILE_PATH_SIZE] = {0x00};
2264 int len = 0;
b915fda3 2265
e0165dcf 2266 len = strlen(Cmd);
2267 if (len > FILE_PATH_SIZE) len = FILE_PATH_SIZE;
2268 memcpy(filename, Cmd, len);
2269
b915fda3 2270
e0165dcf 2271 FILE *f = fopen(filename, "w");
2272 if(!f) {
2273 PrintAndLog("couldn't open '%s'", filename);
2274 return 0;
2275 }
2276 int i;
2277 for (i = 0; i < GraphTraceLen; i++) {
2278 fprintf(f, "%d\n", GraphBuffer[i]);
2279 }
2280 fclose(f);
2281 PrintAndLog("saved to '%s'", Cmd);
2282 return 0;
7fe9b0b7 2283}
2284
2285int CmdScale(const char *Cmd)
2286{
e0165dcf 2287 CursorScaleFactor = atoi(Cmd);
2288 if (CursorScaleFactor == 0) {
2289 PrintAndLog("bad, can't have zero scale");
2290 CursorScaleFactor = 1;
2291 }
2292 RepaintGraphWindow();
2293 return 0;
7fe9b0b7 2294}
2295
d51b2eda
MHS		 2296int CmdDirectionalThreshold(const char *Cmd)
2297{
e0165dcf 2298 int8_t upThres = param_get8(Cmd, 0);
2299 int8_t downThres = param_get8(Cmd, 1);
2300
2301 printf("Applying Up Threshold: %d, Down Threshold: %d\n", upThres, downThres);
2302
2303 int lastValue = GraphBuffer[0];
2304 GraphBuffer[0] = 0; // Will be changed at the end, but init 0 as we adjust to last samples value if no threshold kicks in.
2305
2306 for (int i = 1; i < GraphTraceLen; ++i) {
2307 // Apply first threshold to samples heading up
2308 if (GraphBuffer[i] >= upThres && GraphBuffer[i] > lastValue)
2309 {
2310 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2311 GraphBuffer[i] = 1;
2312 }
2313 // Apply second threshold to samples heading down
2314 else if (GraphBuffer[i] <= downThres && GraphBuffer[i] < lastValue)
2315 {
2316 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2317 GraphBuffer[i] = -1;
2318 }
2319 else
2320 {
2321 lastValue = GraphBuffer[i]; // Buffer last value as we overwrite it.
2322 GraphBuffer[i] = GraphBuffer[i-1];
e0165dcf 2323 }
2324 }
2325 GraphBuffer[0] = GraphBuffer[1]; // Aline with first edited sample.
2326 RepaintGraphWindow();
2327 return 0;
d51b2eda
MHS		 2328}
2329
7fe9b0b7 2330int CmdZerocrossings(const char *Cmd)
2331{
e0165dcf 2332 // Zero-crossings aren't meaningful unless the signal is zero-mean.
2333 CmdHpf("");
2334
2335 int sign = 1;
2336 int zc = 0;
2337 int lastZc = 0;
2338
2339 for (int i = 0; i < GraphTraceLen; ++i) {
2340 if (GraphBuffer[i] * sign >= 0) {
2341 // No change in sign, reproduce the previous sample count.
2342 zc++;
2343 GraphBuffer[i] = lastZc;
2344 } else {
2345 // Change in sign, reset the sample count.
2346 sign = -sign;
2347 GraphBuffer[i] = lastZc;
2348 if (sign > 0) {
2349 lastZc = zc;
2350 zc = 0;
2351 }
2352 }
2353 }
2354
2355 RepaintGraphWindow();
2356 return 0;
7fe9b0b7 2357}
2358
0de8e387 2359/**
2360 * @brief Utility for conversion via cmdline.
2361 * @param Cmd
2362 * @return
2363 */
2364int Cmdbin2hex(const char *Cmd)
2365{
2366 int bg =0, en =0;
2367 if(param_getptr(Cmd, &bg, &en, 0))
0de8e387 2368 return usage_data_bin2hex();
a0c7eea7 2369
0de8e387 2370 //Number of digits supplied as argument
2371 size_t length = en - bg +1;
2372 size_t bytelen = (length+7) / 8;
2373 uint8_t* arr = (uint8_t *) malloc(bytelen);
2374 memset(arr, 0, bytelen);
2375 BitstreamOut bout = { arr, 0, 0 };
2376
a0c7eea7 2377 for (; bg <= en ;bg++) {
0de8e387 2378 char c = Cmd[bg];
2379 if( c == '1') pushBit(&bout, 1);
2380 else if( c == '0') pushBit(&bout, 0);
2381 else PrintAndLog("Ignoring '%c'", c);
2382 }
2383
a0c7eea7 2384 if (bout.numbits % 8 != 0)
0de8e387 2385 printf("[padded with %d zeroes]\n", 8-(bout.numbits % 8));
0de8e387 2386
2387 //Uses printf instead of PrintAndLog since the latter
2388 // adds linebreaks to each printout - this way was more convenient since we don't have to
2389 // allocate a string and write to that first...
2390 for(size_t x = 0; x < bytelen ; x++)
0de8e387 2391 printf("%02X", arr[x]);
a0c7eea7 2392
0de8e387 2393 printf("\n");
2394 free(arr);
2395 return 0;
2396}
2397
0de8e387 2398int Cmdhex2bin(const char *Cmd)
2399{
2400 int bg =0, en =0;
f4d0ffd1 2401 if(param_getptr(Cmd, &bg, &en, 0)) return usage_data_hex2bin();
0de8e387 2402
a0c7eea7 2403 while (bg <= en ) {
0de8e387 2404 char x = Cmd[bg++];
2405 // capitalize
2406 if (x >= 'a' && x <= 'f')
2407 x -= 32;
2408 // convert to numeric value
2409 if (x >= '0' && x <= '9')
2410 x -= '0';
2411 else if (x >= 'A' && x <= 'F')
2412 x -= 'A' - 10;
2413 else
2414 continue;
2415
2416 //Uses printf instead of PrintAndLog since the latter
2417 // adds linebreaks to each printout - this way was more convenient since we don't have to
2418 // allocate a string and write to that first...
2419
2420 for(int i= 0 ; i < 4 ; ++i)
2421 printf("%d",(x >> (3 - i)) & 1);
2422 }
2423 printf("\n");
2424
2425 return 0;
2426}
2427
40f6f2ff 2428int CmdDataIIR(const char *Cmd){
4c543dbd 2429
2430 uint8_t k = param_get8(Cmd,0);
2431 //iceIIR_Butterworth(GraphBuffer, GraphTraceLen);
2432 iceSimple_Filter(GraphBuffer, GraphTraceLen, k);
40f6f2ff 2433 RepaintGraphWindow();
2434 return 0;
2435}
2436
ba1a299c 2437static command_t CommandTable[] =
7fe9b0b7 2438{
e0165dcf 2439 {"help", CmdHelp, 1, "This help"},
a152dea7 2440 {"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)"},
e0165dcf 2441 {"askem410xdemod", CmdAskEM410xDemod, 1, "[clock] [invert<0|1>] [maxErr] -- Demodulate an EM410x tag from GraphBuffer (args optional)"},
2442 {"askgproxiidemod", CmdG_Prox_II_Demod, 1, "Demodulate a G Prox II tag from GraphBuffer"},
70459879 2443 {"askvikingdemod", CmdVikingDemod, 1, "Demodulate a Viking AM tag from GraphBuffer"},
e0165dcf 2444 {"autocorr", CmdAutoCorr, 1, "[window length] [g] -- Autocorrelation over window - g to save back to GraphBuffer (overwrite)"},
fef74fdc 2445 {"biphaserawdecode",CmdBiphaseDecodeRaw,1, "[offset] [invert<0|1>] [maxErr] -- Biphase decode bin stream in DemodBuffer (offset = 0|1 bits to shift the decode start)"},
a152dea7 2446 {"bin2hex", Cmdbin2hex, 1, "<digits> -- Converts binary to hexadecimal"},
e0165dcf 2447 {"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
e0165dcf 2448 {"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
2449 {"dec", CmdDec, 1, "Decimate samples"},
a152dea7 2450 {"detectclock", CmdDetectClockRate, 1, "[<a|f|n|p>] Detect ASK, FSK, NRZ, PSK clock rate of wave in GraphBuffer"},
ad6219fc 2451 {"fdxbdemod", CmdFDXBdemodBI , 1, "Demodulate a FDX-B ISO11784/85 Biphase tag from GraphBuffer"},
e0165dcf 2452 {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate an AWID FSK tag from GraphBuffer"},
2453 //{"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
2454 {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate a HID FSK tag from GraphBuffer"},
2455 {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate an IO Prox FSK tag from GraphBuffer"},
2456 {"fskpyramiddemod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from GraphBuffer"},
2457 {"fskparadoxdemod", CmdFSKdemodParadox, 1, "Demodulate a Paradox FSK tag from GraphBuffer"},
2458 {"getbitstream", CmdGetBitStream, 1, "Convert GraphBuffer's >=1 values to 1 and <1 to 0"},
2459 {"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
2460 {"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
a152dea7 2461 {"hex2bin", Cmdhex2bin, 1, "<hexadecimal> -- Converts hexadecimal to binary"},
e0165dcf 2462 {"hide", CmdHide, 1, "Hide graph window"},
2463 {"hpf", CmdHpf, 1, "Remove DC offset from trace"},
2464 {"load", CmdLoad, 1, "<filename> -- Load trace (to graph window"},
2465 {"ltrim", CmdLtrim, 1, "<samples> -- Trim samples from left of trace"},
2466 {"rtrim", CmdRtrim, 1, "<location to end trace> -- Trim samples from right of trace"},
fef74fdc 2467 {"manrawdecode", Cmdmandecoderaw, 1, "[invert] [maxErr] -- Manchester decode binary stream in DemodBuffer"},
e0165dcf 2468 {"norm", CmdNorm, 1, "Normalize max/min to +/-128"},
2469 {"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
bf32dd92 2470 {"printdemodbuffer",CmdPrintDemodBuff, 1, "[x] [o] <offset> [l] <length> -- print the data in the DemodBuffer - 'x' for hex output"},
e0165dcf 2471 {"pskindalademod", CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Demodulate an indala tag (PSK1) from GraphBuffer (args optional)"},
411105e0 2472 {"psknexwatchdemod",CmdPSKNexWatch, 1, "Demodulate a NexWatch tag (nexkey, quadrakey) (PSK1) from GraphBuffer"},
e0165dcf 2473 {"rawdemod", CmdRawDemod, 1, "[modulation] ... <options> -see help (h option) -- Demodulate the data in the GraphBuffer and output binary"},
2474 {"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window (GraphBuffer)"},
2475 {"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
2476 {"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
a126332a 2477 {"setdebugmode", CmdSetDebugMode, 1, "<0|1|2> -- Turn on or off Debugging Level for lf demods"},
e0165dcf 2478 {"shiftgraphzero", CmdGraphShiftZero, 1, "<shift> -- Shift 0 for Graphed wave + or - shift value"},
e0165dcf 2479 {"dirthreshold", CmdDirectionalThreshold, 1, "<thres up> <thres down> -- Max rising higher up-thres/ Min falling lower down-thres, keep rest as prev."},
2480 {"tune", CmdTuneSamples, 0, "Get hw tune samples for graph window"},
2481 {"undec", CmdUndec, 1, "Un-decimate samples by 2"},
2482 {"zerocrossings", CmdZerocrossings, 1, "Count time between zero-crossings"},
40f6f2ff 2483 {"iir", CmdDataIIR, 0, "apply IIR buttersworth filter on plotdata"},
e0165dcf 2484 {NULL, NULL, 0, NULL}
7fe9b0b7 2485};
2486
4c36581b 2487int CmdData(const char *Cmd){
2488 clearCommandBuffer();
e0165dcf 2489 CmdsParse(CommandTable, Cmd);
2490 return 0;
7fe9b0b7 2491}
2492
2493int CmdHelp(const char *Cmd)
2494{
e0165dcf 2495 CmdsHelp(CommandTable);
2496 return 0;
7fe9b0b7 2497}
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