15c4dc5a |
1 | //----------------------------------------------------------------------------- |
bd20f8f4 |
2 | // Jonathan Westhues, split Nov 2006 |
3 | // Modified by Greg Jones, Jan 2009 |
e6304bca |
4 | // Modified by Adrian Dabrowski "atrox", Mar-Sept 2010,Oct 2011 |
bd20f8f4 |
5 | // |
6 | // This code is licensed to you under the terms of the GNU GPL, version 2 or, |
7 | // at your option, any later version. See the LICENSE.txt file for the text of |
8 | // the license. |
9 | //----------------------------------------------------------------------------- |
15c4dc5a |
10 | // Routines to support ISO 15693. This includes both the reader software and |
11 | // the `fake tag' modes, but at the moment I've implemented only the reader |
12 | // stuff, and that barely. |
bd20f8f4 |
13 | // Modified to perform modulation onboard in arm rather than on PC |
15c4dc5a |
14 | // Also added additional reader commands (SELECT, READ etc.) |
15c4dc5a |
15 | //----------------------------------------------------------------------------- |
9455b51c |
16 | // The ISO 15693 describes two transmission modes from reader to tag, and 4 |
17 | // transmission modes from tag to reader. As of Mar 2010 this code only |
18 | // supports one of each: "1of4" mode from reader to tag, and the highspeed |
19 | // variant with one subcarrier from card to reader. |
20 | // As long, as the card fully support ISO 15693 this is no problem, since the |
21 | // reader chooses both data rates, but some non-standard tags do not. Further for |
22 | // the simulation to work, we will need to support all data rates. |
23 | // |
24 | // VCD (reader) -> VICC (tag) |
25 | // 1 out of 256: |
26 | // data rate: 1,66 kbit/s (fc/8192) |
27 | // used for long range |
28 | // 1 out of 4: |
29 | // data rate: 26,48 kbit/s (fc/512) |
30 | // used for short range, high speed |
31 | // |
32 | // VICC (tag) -> VCD (reader) |
33 | // Modulation: |
34 | // ASK / one subcarrier (423,75 khz) |
35 | // FSK / two subcarriers (423,75 khz && 484,28 khz) |
36 | // Data Rates / Modes: |
37 | // low ASK: 6,62 kbit/s |
38 | // low FSK: 6.67 kbit/s |
39 | // high ASK: 26,48 kbit/s |
40 | // high FSK: 26,69 kbit/s |
41 | //----------------------------------------------------------------------------- |
42 | // added "1 out of 256" mode (for VCD->PICC) - atrox 20100911 |
43 | |
44 | |
45 | // Random Remarks: |
46 | // *) UID is always used "transmission order" (LSB), which is reverse to display order |
47 | |
48 | // TODO / BUGS / ISSUES: |
49 | // *) writing to tags takes longer: we miss the answer from the tag in most cases |
50 | // -> tweak the read-timeout times |
51 | // *) signal decoding from the card is still a bit shaky. |
52 | // *) signal decoding is unable to detect collissions. |
53 | // *) add anti-collission support for inventory-commands |
e6304bca |
54 | // *) read security status of a block |
9455b51c |
55 | // *) sniffing and simulation do only support one transmission mode. need to support |
56 | // all 8 transmission combinations |
57 | // *) remove or refactor code under "depricated" |
58 | // *) document all the functions |
59 | |
bd20f8f4 |
60 | |
e30c654b |
61 | #include "proxmark3.h" |
f7e3ed82 |
62 | #include "util.h" |
15c4dc5a |
63 | #include "apps.h" |
9ab7a6c7 |
64 | #include "string.h" |
9455b51c |
65 | #include "iso15693tools.h" |
902cb3c0 |
66 | #include "cmd.h" |
15c4dc5a |
67 | |
15c4dc5a |
68 | #define arraylen(x) (sizeof(x)/sizeof((x)[0])) |
69 | |
9455b51c |
70 | /////////////////////////////////////////////////////////////////////// |
71 | // ISO 15693 Part 2 - Air Interface |
72 | // This section basicly contains transmission and receiving of bits |
73 | /////////////////////////////////////////////////////////////////////// |
74 | |
75 | #define FrameSOF Iso15693FrameSOF |
76 | #define Logic0 Iso15693Logic0 |
77 | #define Logic1 Iso15693Logic1 |
78 | #define FrameEOF Iso15693FrameEOF |
15c4dc5a |
79 | |
9455b51c |
80 | #define Crc(data,datalen) Iso15693Crc(data,datalen) |
81 | #define AddCrc(data,datalen) Iso15693AddCrc(data,datalen) |
82 | #define sprintUID(target,uid) Iso15693sprintUID(target,uid) |
15c4dc5a |
83 | |
9455b51c |
84 | int DEBUG=0; |
85 | |
86 | |
87 | // --------------------------- |
88 | // Signal Processing |
89 | // --------------------------- |
90 | |
91 | // prepare data using "1 out of 4" code for later transmission |
92 | // resulting data rate is 26,48 kbit/s (fc/512) |
93 | // cmd ... data |
94 | // n ... length of data |
f7e3ed82 |
95 | static void CodeIso15693AsReader(uint8_t *cmd, int n) |
15c4dc5a |
96 | { |
97 | int i, j; |
98 | |
99 | ToSendReset(); |
100 | |
101 | // Give it a bit of slack at the beginning |
102 | for(i = 0; i < 24; i++) { |
103 | ToSendStuffBit(1); |
104 | } |
105 | |
9455b51c |
106 | // SOF for 1of4 |
15c4dc5a |
107 | ToSendStuffBit(0); |
108 | ToSendStuffBit(1); |
109 | ToSendStuffBit(1); |
110 | ToSendStuffBit(1); |
111 | ToSendStuffBit(1); |
112 | ToSendStuffBit(0); |
113 | ToSendStuffBit(1); |
114 | ToSendStuffBit(1); |
115 | for(i = 0; i < n; i++) { |
116 | for(j = 0; j < 8; j += 2) { |
117 | int these = (cmd[i] >> j) & 3; |
118 | switch(these) { |
119 | case 0: |
120 | ToSendStuffBit(1); |
121 | ToSendStuffBit(0); |
122 | ToSendStuffBit(1); |
123 | ToSendStuffBit(1); |
124 | ToSendStuffBit(1); |
125 | ToSendStuffBit(1); |
126 | ToSendStuffBit(1); |
127 | ToSendStuffBit(1); |
128 | break; |
129 | case 1: |
130 | ToSendStuffBit(1); |
131 | ToSendStuffBit(1); |
132 | ToSendStuffBit(1); |
133 | ToSendStuffBit(0); |
134 | ToSendStuffBit(1); |
135 | ToSendStuffBit(1); |
136 | ToSendStuffBit(1); |
137 | ToSendStuffBit(1); |
138 | break; |
139 | case 2: |
140 | ToSendStuffBit(1); |
141 | ToSendStuffBit(1); |
142 | ToSendStuffBit(1); |
143 | ToSendStuffBit(1); |
144 | ToSendStuffBit(1); |
145 | ToSendStuffBit(0); |
146 | ToSendStuffBit(1); |
147 | ToSendStuffBit(1); |
148 | break; |
149 | case 3: |
150 | ToSendStuffBit(1); |
151 | ToSendStuffBit(1); |
152 | ToSendStuffBit(1); |
153 | ToSendStuffBit(1); |
154 | ToSendStuffBit(1); |
155 | ToSendStuffBit(1); |
156 | ToSendStuffBit(1); |
157 | ToSendStuffBit(0); |
158 | break; |
159 | } |
160 | } |
161 | } |
9455b51c |
162 | // EOF |
15c4dc5a |
163 | ToSendStuffBit(1); |
164 | ToSendStuffBit(1); |
165 | ToSendStuffBit(0); |
166 | ToSendStuffBit(1); |
167 | |
168 | // And slack at the end, too. |
169 | for(i = 0; i < 24; i++) { |
170 | ToSendStuffBit(1); |
171 | } |
172 | } |
173 | |
9455b51c |
174 | // encode data using "1 out of 256" sheme |
175 | // data rate is 1,66 kbit/s (fc/8192) |
176 | // is designed for more robust communication over longer distances |
177 | static void CodeIso15693AsReader256(uint8_t *cmd, int n) |
15c4dc5a |
178 | { |
15c4dc5a |
179 | int i, j; |
180 | |
9455b51c |
181 | ToSendReset(); |
182 | |
183 | // Give it a bit of slack at the beginning |
184 | for(i = 0; i < 24; i++) { |
185 | ToSendStuffBit(1); |
186 | } |
187 | |
188 | // SOF for 1of256 |
189 | ToSendStuffBit(0); |
190 | ToSendStuffBit(1); |
191 | ToSendStuffBit(1); |
192 | ToSendStuffBit(1); |
193 | ToSendStuffBit(1); |
194 | ToSendStuffBit(1); |
195 | ToSendStuffBit(1); |
196 | ToSendStuffBit(0); |
197 | |
15c4dc5a |
198 | for(i = 0; i < n; i++) { |
9455b51c |
199 | for (j = 0; j<=255; j++) { |
200 | if (cmd[i]==j) { |
201 | ToSendStuffBit(1); |
202 | ToSendStuffBit(0); |
15c4dc5a |
203 | } else { |
9455b51c |
204 | ToSendStuffBit(1); |
205 | ToSendStuffBit(1); |
206 | } |
207 | } |
15c4dc5a |
208 | } |
9455b51c |
209 | // EOF |
210 | ToSendStuffBit(1); |
211 | ToSendStuffBit(1); |
212 | ToSendStuffBit(0); |
213 | ToSendStuffBit(1); |
15c4dc5a |
214 | |
9455b51c |
215 | // And slack at the end, too. |
216 | for(i = 0; i < 24; i++) { |
217 | ToSendStuffBit(1); |
218 | } |
15c4dc5a |
219 | } |
220 | |
9455b51c |
221 | |
15c4dc5a |
222 | // Transmit the command (to the tag) that was placed in ToSend[]. |
f7e3ed82 |
223 | static void TransmitTo15693Tag(const uint8_t *cmd, int len, int *samples, int *wait) |
15c4dc5a |
224 | { |
225 | int c; |
226 | |
227 | // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD); |
228 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); |
229 | if(*wait < 10) { *wait = 10; } |
230 | |
231 | // for(c = 0; c < *wait;) { |
232 | // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
233 | // AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing! |
234 | // c++; |
235 | // } |
236 | // if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
f7e3ed82 |
237 | // volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
238 | // (void)r; |
239 | // } |
240 | // WDT_HIT(); |
241 | // } |
242 | |
243 | c = 0; |
244 | for(;;) { |
245 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
246 | AT91C_BASE_SSC->SSC_THR = cmd[c]; |
247 | c++; |
248 | if(c >= len) { |
249 | break; |
250 | } |
251 | } |
252 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
f7e3ed82 |
253 | volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
254 | (void)r; |
255 | } |
256 | WDT_HIT(); |
257 | } |
258 | *samples = (c + *wait) << 3; |
259 | } |
260 | |
261 | //----------------------------------------------------------------------------- |
262 | // Transmit the command (to the reader) that was placed in ToSend[]. |
263 | //----------------------------------------------------------------------------- |
f7e3ed82 |
264 | static void TransmitTo15693Reader(const uint8_t *cmd, int len, int *samples, int *wait) |
15c4dc5a |
265 | { |
3fe4ff4f |
266 | int c = 0; |
267 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR|FPGA_HF_SIMULATOR_MODULATE_424K); |
15c4dc5a |
268 | if(*wait < 10) { *wait = 10; } |
269 | |
15c4dc5a |
270 | for(;;) { |
271 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
272 | AT91C_BASE_SSC->SSC_THR = cmd[c]; |
273 | c++; |
274 | if(c >= len) { |
275 | break; |
276 | } |
277 | } |
278 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
f7e3ed82 |
279 | volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
280 | (void)r; |
281 | } |
282 | WDT_HIT(); |
283 | } |
284 | *samples = (c + *wait) << 3; |
285 | } |
286 | |
9455b51c |
287 | |
288 | // Read from Tag |
289 | // Parameters: |
290 | // receivedResponse |
291 | // maxLen |
292 | // samples |
293 | // elapsed |
294 | // returns: |
295 | // number of decoded bytes |
f7e3ed82 |
296 | static int GetIso15693AnswerFromTag(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) |
15c4dc5a |
297 | { |
298 | int c = 0; |
117d9ec2 |
299 | uint8_t *dest = BigBuf_get_addr(); |
15c4dc5a |
300 | int getNext = 0; |
301 | |
f7e3ed82 |
302 | int8_t prev = 0; |
15c4dc5a |
303 | |
304 | // NOW READ RESPONSE |
305 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
306 | //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads |
307 | c = 0; |
308 | getNext = FALSE; |
309 | for(;;) { |
310 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
311 | AT91C_BASE_SSC->SSC_THR = 0x43; |
312 | } |
313 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
f7e3ed82 |
314 | int8_t b; |
315 | b = (int8_t)AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
316 | |
317 | // The samples are correlations against I and Q versions of the |
318 | // tone that the tag AM-modulates, so every other sample is I, |
319 | // every other is Q. We just want power, so abs(I) + abs(Q) is |
320 | // close to what we want. |
321 | if(getNext) { |
cf194819 |
322 | int8_t r = ABS(b) + ABS(prev); |
15c4dc5a |
323 | |
f7e3ed82 |
324 | dest[c++] = (uint8_t)r; |
15c4dc5a |
325 | |
326 | if(c >= 2000) { |
327 | break; |
328 | } |
329 | } else { |
330 | prev = b; |
331 | } |
332 | |
333 | getNext = !getNext; |
334 | } |
335 | } |
336 | |
9455b51c |
337 | ////////////////////////////////////////// |
338 | /////////// DEMODULATE /////////////////// |
339 | ////////////////////////////////////////// |
15c4dc5a |
340 | |
341 | int i, j; |
342 | int max = 0, maxPos=0; |
343 | |
344 | int skip = 4; |
345 | |
9455b51c |
346 | // if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL |
15c4dc5a |
347 | |
348 | // First, correlate for SOF |
349 | for(i = 0; i < 100; i++) { |
350 | int corr = 0; |
351 | for(j = 0; j < arraylen(FrameSOF); j += skip) { |
352 | corr += FrameSOF[j]*dest[i+(j/skip)]; |
353 | } |
354 | if(corr > max) { |
355 | max = corr; |
356 | maxPos = i; |
357 | } |
358 | } |
9455b51c |
359 | // DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); |
15c4dc5a |
360 | |
361 | int k = 0; // this will be our return value |
362 | |
363 | // greg - If correlation is less than 1 then there's little point in continuing |
364 | if ((max/(arraylen(FrameSOF)/skip)) >= 1) |
365 | { |
366 | |
9455b51c |
367 | i = maxPos + arraylen(FrameSOF)/skip; |
368 | |
369 | uint8_t outBuf[20]; |
370 | memset(outBuf, 0, sizeof(outBuf)); |
371 | uint8_t mask = 0x01; |
372 | for(;;) { |
373 | int corr0 = 0, corr1 = 0, corrEOF = 0; |
374 | for(j = 0; j < arraylen(Logic0); j += skip) { |
375 | corr0 += Logic0[j]*dest[i+(j/skip)]; |
376 | } |
377 | for(j = 0; j < arraylen(Logic1); j += skip) { |
378 | corr1 += Logic1[j]*dest[i+(j/skip)]; |
379 | } |
380 | for(j = 0; j < arraylen(FrameEOF); j += skip) { |
381 | corrEOF += FrameEOF[j]*dest[i+(j/skip)]; |
382 | } |
383 | // Even things out by the length of the target waveform. |
384 | corr0 *= 4; |
385 | corr1 *= 4; |
386 | |
387 | if(corrEOF > corr1 && corrEOF > corr0) { |
388 | // DbpString("EOF at %d", i); |
389 | break; |
390 | } else if(corr1 > corr0) { |
391 | i += arraylen(Logic1)/skip; |
392 | outBuf[k] |= mask; |
393 | } else { |
394 | i += arraylen(Logic0)/skip; |
395 | } |
396 | mask <<= 1; |
397 | if(mask == 0) { |
398 | k++; |
399 | mask = 0x01; |
400 | } |
401 | if((i+(int)arraylen(FrameEOF)) >= 2000) { |
402 | DbpString("ran off end!"); |
403 | break; |
404 | } |
15c4dc5a |
405 | } |
9455b51c |
406 | if(mask != 0x01) { // this happens, when we miss the EOF |
407 | // TODO: for some reason this happens quite often |
408 | if (DEBUG) Dbprintf("error, uneven octet! (extra bits!) mask=%02x", mask); |
409 | if (mask<0x08) k--; // discard the last uneven octet; |
410 | // 0x08 is an assumption - but works quite often |
15c4dc5a |
411 | } |
9455b51c |
412 | // uint8_t str1 [8]; |
413 | // itoa(k,str1); |
414 | // strncat(str1," octets read",8); |
415 | |
416 | // DbpString( str1); // DbpString("%d octets", k); |
417 | |
418 | // for(i = 0; i < k; i+=3) { |
419 | // //DbpString("# %2d: %02x ", i, outBuf[i]); |
420 | // DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]); |
421 | // } |
422 | |
423 | for(i = 0; i < k; i++) { |
424 | receivedResponse[i] = outBuf[i]; |
15c4dc5a |
425 | } |
15c4dc5a |
426 | } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip)) |
427 | return k; // return the number of bytes demodulated |
428 | |
429 | /// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2)); |
430 | |
431 | } |
432 | |
9455b51c |
433 | |
15c4dc5a |
434 | // Now the GetISO15693 message from sniffing command |
f7e3ed82 |
435 | static int GetIso15693AnswerFromSniff(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) |
15c4dc5a |
436 | { |
437 | int c = 0; |
117d9ec2 |
438 | uint8_t *dest = BigBuf_get_addr(); |
15c4dc5a |
439 | int getNext = 0; |
440 | |
f7e3ed82 |
441 | int8_t prev = 0; |
15c4dc5a |
442 | |
443 | // NOW READ RESPONSE |
444 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
445 | //spindelay(60); // greg - experiment to get rid of some of the 0 byte/failed reads |
446 | c = 0; |
447 | getNext = FALSE; |
448 | for(;;) { |
449 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
450 | AT91C_BASE_SSC->SSC_THR = 0x43; |
451 | } |
452 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
3fe4ff4f |
453 | int8_t b = (int8_t)AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
454 | |
455 | // The samples are correlations against I and Q versions of the |
456 | // tone that the tag AM-modulates, so every other sample is I, |
457 | // every other is Q. We just want power, so abs(I) + abs(Q) is |
458 | // close to what we want. |
459 | if(getNext) { |
cf194819 |
460 | int8_t r = ABS(b) + ABS(prev); |
15c4dc5a |
461 | |
f7e3ed82 |
462 | dest[c++] = (uint8_t)r; |
15c4dc5a |
463 | |
464 | if(c >= 20000) { |
465 | break; |
466 | } |
467 | } else { |
468 | prev = b; |
469 | } |
470 | |
471 | getNext = !getNext; |
472 | } |
473 | } |
474 | |
9455b51c |
475 | ////////////////////////////////////////// |
476 | /////////// DEMODULATE /////////////////// |
477 | ////////////////////////////////////////// |
15c4dc5a |
478 | |
479 | int i, j; |
480 | int max = 0, maxPos=0; |
481 | |
482 | int skip = 4; |
483 | |
484 | // if(GraphTraceLen < 1000) return; // THIS CHECKS FOR A BUFFER TO SMALL |
485 | |
486 | // First, correlate for SOF |
487 | for(i = 0; i < 19000; i++) { |
488 | int corr = 0; |
489 | for(j = 0; j < arraylen(FrameSOF); j += skip) { |
490 | corr += FrameSOF[j]*dest[i+(j/skip)]; |
491 | } |
492 | if(corr > max) { |
493 | max = corr; |
494 | maxPos = i; |
495 | } |
496 | } |
497 | // DbpString("SOF at %d, correlation %d", maxPos,max/(arraylen(FrameSOF)/skip)); |
498 | |
499 | int k = 0; // this will be our return value |
500 | |
501 | // greg - If correlation is less than 1 then there's little point in continuing |
502 | if ((max/(arraylen(FrameSOF)/skip)) >= 1) // THIS SHOULD BE 1 |
503 | { |
9455b51c |
504 | |
505 | i = maxPos + arraylen(FrameSOF)/skip; |
506 | |
507 | uint8_t outBuf[20]; |
508 | memset(outBuf, 0, sizeof(outBuf)); |
509 | uint8_t mask = 0x01; |
510 | for(;;) { |
511 | int corr0 = 0, corr1 = 0, corrEOF = 0; |
512 | for(j = 0; j < arraylen(Logic0); j += skip) { |
513 | corr0 += Logic0[j]*dest[i+(j/skip)]; |
514 | } |
515 | for(j = 0; j < arraylen(Logic1); j += skip) { |
516 | corr1 += Logic1[j]*dest[i+(j/skip)]; |
517 | } |
518 | for(j = 0; j < arraylen(FrameEOF); j += skip) { |
519 | corrEOF += FrameEOF[j]*dest[i+(j/skip)]; |
520 | } |
521 | // Even things out by the length of the target waveform. |
522 | corr0 *= 4; |
523 | corr1 *= 4; |
524 | |
525 | if(corrEOF > corr1 && corrEOF > corr0) { |
526 | // DbpString("EOF at %d", i); |
527 | break; |
528 | } else if(corr1 > corr0) { |
529 | i += arraylen(Logic1)/skip; |
530 | outBuf[k] |= mask; |
531 | } else { |
532 | i += arraylen(Logic0)/skip; |
533 | } |
534 | mask <<= 1; |
535 | if(mask == 0) { |
536 | k++; |
537 | mask = 0x01; |
538 | } |
539 | if((i+(int)arraylen(FrameEOF)) >= 2000) { |
540 | DbpString("ran off end!"); |
541 | break; |
542 | } |
15c4dc5a |
543 | } |
9455b51c |
544 | if(mask != 0x01) { |
545 | DbpString("sniff: error, uneven octet! (discard extra bits!)"); |
546 | /// DbpString(" mask=%02x", mask); |
15c4dc5a |
547 | } |
9455b51c |
548 | // uint8_t str1 [8]; |
549 | // itoa(k,str1); |
550 | // strncat(str1," octets read",8); |
551 | |
552 | // DbpString( str1); // DbpString("%d octets", k); |
553 | |
554 | // for(i = 0; i < k; i+=3) { |
555 | // //DbpString("# %2d: %02x ", i, outBuf[i]); |
556 | // DbpIntegers(outBuf[i],outBuf[i+1],outBuf[i+2]); |
557 | // } |
558 | |
559 | for(i = 0; i < k; i++) { |
560 | receivedResponse[i] = outBuf[i]; |
15c4dc5a |
561 | } |
15c4dc5a |
562 | } // "end if correlation > 0" (max/(arraylen(FrameSOF)/skip)) |
563 | return k; // return the number of bytes demodulated |
564 | |
565 | /// DbpString("CRC=%04x", Iso15693Crc(outBuf, k-2)); |
566 | } |
567 | |
9455b51c |
568 | |
569 | static void BuildIdentifyRequest(void); |
15c4dc5a |
570 | //----------------------------------------------------------------------------- |
571 | // Start to read an ISO 15693 tag. We send an identify request, then wait |
572 | // for the response. The response is not demodulated, just left in the buffer |
573 | // so that it can be downloaded to a PC and processed there. |
574 | //----------------------------------------------------------------------------- |
575 | void AcquireRawAdcSamplesIso15693(void) |
576 | { |
117d9ec2 |
577 | uint8_t *dest = BigBuf_get_addr(); |
15c4dc5a |
578 | |
3fe4ff4f |
579 | int c = 0; |
580 | int getNext = 0; |
f7e3ed82 |
581 | int8_t prev = 0; |
15c4dc5a |
582 | |
7cc204bf |
583 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
15c4dc5a |
584 | BuildIdentifyRequest(); |
585 | |
586 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
587 | |
588 | // Give the tags time to energize |
589 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
590 | SpinDelay(100); |
591 | |
592 | // Now send the command |
593 | FpgaSetupSsc(); |
594 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_TX); |
595 | |
596 | c = 0; |
597 | for(;;) { |
598 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
599 | AT91C_BASE_SSC->SSC_THR = ToSend[c]; |
600 | c++; |
601 | if(c == ToSendMax+3) { |
602 | break; |
603 | } |
604 | } |
605 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
f7e3ed82 |
606 | volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
607 | (void)r; |
608 | } |
609 | WDT_HIT(); |
610 | } |
611 | |
612 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
613 | |
614 | c = 0; |
615 | getNext = FALSE; |
616 | for(;;) { |
617 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
618 | AT91C_BASE_SSC->SSC_THR = 0x43; |
619 | } |
620 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
f7e3ed82 |
621 | int8_t b; |
622 | b = (int8_t)AT91C_BASE_SSC->SSC_RHR; |
15c4dc5a |
623 | |
9455b51c |
624 | // The samples are correlations against I and Q versions of the |
625 | // tone that the tag AM-modulates, so every other sample is I, |
626 | // every other is Q. We just want power, so abs(I) + abs(Q) is |
627 | // close to what we want. |
628 | if(getNext) { |
cf194819 |
629 | int8_t r = ABS(b) + ABS(prev); |
9455b51c |
630 | |
631 | dest[c++] = (uint8_t)r; |
632 | |
633 | if(c >= 2000) { |
634 | break; |
635 | } |
636 | } else { |
637 | prev = b; |
638 | } |
639 | |
640 | getNext = !getNext; |
641 | } |
642 | } |
643 | } |
644 | |
645 | |
646 | void RecordRawAdcSamplesIso15693(void) |
647 | { |
117d9ec2 |
648 | uint8_t *dest = BigBuf_get_addr(); |
3fe4ff4f |
649 | |
9455b51c |
650 | int c = 0; |
9455b51c |
651 | int getNext = 0; |
9455b51c |
652 | int8_t prev = 0; |
653 | |
7cc204bf |
654 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
9455b51c |
655 | // Setup SSC |
656 | FpgaSetupSsc(); |
657 | |
658 | // Start from off (no field generated) |
659 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
660 | SpinDelay(200); |
661 | |
662 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
663 | |
664 | SpinDelay(100); |
665 | |
666 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
667 | |
668 | c = 0; |
669 | getNext = FALSE; |
670 | for(;;) { |
671 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { |
672 | AT91C_BASE_SSC->SSC_THR = 0x43; |
673 | } |
674 | if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { |
675 | int8_t b; |
676 | b = (int8_t)AT91C_BASE_SSC->SSC_RHR; |
677 | |
678 | // The samples are correlations against I and Q versions of the |
679 | // tone that the tag AM-modulates, so every other sample is I, |
680 | // every other is Q. We just want power, so abs(I) + abs(Q) is |
681 | // close to what we want. |
682 | if(getNext) { |
cf194819 |
683 | int8_t r = ABS(b) + ABS(prev); |
9455b51c |
684 | |
685 | dest[c++] = (uint8_t)r; |
686 | |
687 | if(c >= 7000) { |
688 | break; |
689 | } |
690 | } else { |
691 | prev = b; |
692 | } |
693 | |
694 | getNext = !getNext; |
695 | WDT_HIT(); |
696 | } |
697 | } |
698 | Dbprintf("fin record"); |
699 | } |
700 | |
701 | |
702 | // Initialize the proxmark as iso15k reader |
e6304bca |
703 | // (this might produces glitches that confuse some tags |
9455b51c |
704 | void Iso15693InitReader() { |
705 | LED_A_ON(); |
706 | LED_B_ON(); |
707 | LED_C_OFF(); |
708 | LED_D_OFF(); |
709 | |
7cc204bf |
710 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
9455b51c |
711 | // Setup SSC |
e6304bca |
712 | // FpgaSetupSsc(); |
9455b51c |
713 | |
714 | // Start from off (no field generated) |
715 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
e6304bca |
716 | SpinDelay(10); |
9455b51c |
717 | |
718 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
719 | FpgaSetupSsc(); |
720 | |
721 | // Give the tags time to energize |
722 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
e6304bca |
723 | SpinDelay(250); |
9455b51c |
724 | |
725 | LED_A_ON(); |
726 | LED_B_OFF(); |
727 | LED_C_OFF(); |
728 | LED_D_OFF(); |
729 | } |
730 | |
731 | /////////////////////////////////////////////////////////////////////// |
732 | // ISO 15693 Part 3 - Air Interface |
733 | // This section basicly contains transmission and receiving of bits |
734 | /////////////////////////////////////////////////////////////////////// |
735 | |
736 | // Encode (into the ToSend buffers) an identify request, which is the first |
737 | // thing that you must send to a tag to get a response. |
738 | static void BuildIdentifyRequest(void) |
739 | { |
740 | uint8_t cmd[5]; |
741 | |
742 | uint16_t crc; |
743 | // one sub-carrier, inventory, 1 slot, fast rate |
744 | // AFI is at bit 5 (1<<4) when doing an INVENTORY |
745 | cmd[0] = (1 << 2) | (1 << 5) | (1 << 1); |
746 | // inventory command code |
747 | cmd[1] = 0x01; |
748 | // no mask |
749 | cmd[2] = 0x00; |
750 | //Now the CRC |
751 | crc = Crc(cmd, 3); |
752 | cmd[3] = crc & 0xff; |
753 | cmd[4] = crc >> 8; |
754 | |
755 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
756 | } |
757 | |
758 | // uid is in transmission order (which is reverse of display order) |
759 | static void BuildReadBlockRequest(uint8_t *uid, uint8_t blockNumber ) |
760 | { |
761 | uint8_t cmd[13]; |
762 | |
763 | uint16_t crc; |
764 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
765 | // followed by teh block data |
766 | // one sub-carrier, inventory, 1 slot, fast rate |
767 | cmd[0] = (1 << 6)| (1 << 5) | (1 << 1); // no SELECT bit, ADDR bit, OPTION bit |
768 | // READ BLOCK command code |
769 | cmd[1] = 0x20; |
770 | // UID may be optionally specified here |
771 | // 64-bit UID |
772 | cmd[2] = uid[0]; |
773 | cmd[3] = uid[1]; |
774 | cmd[4] = uid[2]; |
775 | cmd[5] = uid[3]; |
776 | cmd[6] = uid[4]; |
777 | cmd[7] = uid[5]; |
778 | cmd[8] = uid[6]; |
779 | cmd[9] = uid[7]; // 0xe0; // always e0 (not exactly unique) |
780 | // Block number to read |
781 | cmd[10] = blockNumber;//0x00; |
782 | //Now the CRC |
783 | crc = Crc(cmd, 11); // the crc needs to be calculated over 12 bytes |
784 | cmd[11] = crc & 0xff; |
785 | cmd[12] = crc >> 8; |
786 | |
787 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
788 | } |
789 | |
790 | // Now the VICC>VCD responses when we are simulating a tag |
3fe4ff4f |
791 | static void BuildInventoryResponse( uint8_t *uid) |
9455b51c |
792 | { |
793 | uint8_t cmd[12]; |
794 | |
795 | uint16_t crc; |
796 | // one sub-carrier, inventory, 1 slot, fast rate |
797 | // AFI is at bit 5 (1<<4) when doing an INVENTORY |
3fe4ff4f |
798 | //(1 << 2) | (1 << 5) | (1 << 1); |
799 | cmd[0] = 0; // |
800 | cmd[1] = 0; // DSFID (data storage format identifier). 0x00 = not supported |
9455b51c |
801 | // 64-bit UID |
3fe4ff4f |
802 | cmd[2] = uid[7]; //0x32; |
803 | cmd[3] = uid[6]; //0x4b; |
804 | cmd[4] = uid[5]; //0x03; |
805 | cmd[5] = uid[4]; //0x01; |
806 | cmd[6] = uid[3]; //0x00; |
807 | cmd[7] = uid[2]; //0x10; |
808 | cmd[8] = uid[1]; //0x05; |
809 | cmd[9] = uid[0]; //0xe0; |
9455b51c |
810 | //Now the CRC |
811 | crc = Crc(cmd, 10); |
812 | cmd[10] = crc & 0xff; |
813 | cmd[11] = crc >> 8; |
814 | |
815 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
816 | } |
817 | |
e6304bca |
818 | // Universal Method for sending to and recv bytes from a tag |
9455b51c |
819 | // init ... should we initialize the reader? |
820 | // speed ... 0 low speed, 1 hi speed |
821 | // **recv will return you a pointer to the received data |
822 | // If you do not need the answer use NULL for *recv[] |
823 | // return: lenght of received data |
824 | int SendDataTag(uint8_t *send, int sendlen, int init, int speed, uint8_t **recv) { |
825 | |
826 | int samples = 0; |
827 | int tsamples = 0; |
828 | int wait = 0; |
829 | int elapsed = 0; |
830 | |
831 | LED_A_ON(); |
832 | LED_B_ON(); |
833 | LED_C_OFF(); |
834 | LED_D_OFF(); |
835 | |
09ffd16e |
836 | if (init) Iso15693InitReader(); |
837 | |
9455b51c |
838 | int answerLen=0; |
117d9ec2 |
839 | uint8_t *answer = BigBuf_get_addr() + 3660; |
840 | if (recv != NULL) memset(answer, 0, 100); |
9455b51c |
841 | |
9455b51c |
842 | if (!speed) { |
843 | // low speed (1 out of 256) |
844 | CodeIso15693AsReader256(send, sendlen); |
845 | } else { |
846 | // high speed (1 out of 4) |
847 | CodeIso15693AsReader(send, sendlen); |
848 | } |
849 | |
850 | LED_A_ON(); |
851 | LED_B_OFF(); |
852 | |
853 | TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); |
854 | // Now wait for a response |
855 | if (recv!=NULL) { |
856 | LED_A_OFF(); |
857 | LED_B_ON(); |
858 | answerLen = GetIso15693AnswerFromTag(answer, 100, &samples, &elapsed) ; |
859 | *recv=answer; |
860 | } |
861 | |
862 | LED_A_OFF(); |
863 | LED_B_OFF(); |
864 | LED_C_OFF(); |
865 | LED_D_OFF(); |
866 | |
867 | return answerLen; |
868 | } |
15c4dc5a |
869 | |
15c4dc5a |
870 | |
9455b51c |
871 | // -------------------------------------------------------------------- |
872 | // Debug Functions |
873 | // -------------------------------------------------------------------- |
15c4dc5a |
874 | |
9455b51c |
875 | // Decodes a message from a tag and displays its metadata and content |
876 | #define DBD15STATLEN 48 |
877 | void DbdecodeIso15693Answer(int len, uint8_t *d) { |
878 | char status[DBD15STATLEN+1]={0}; |
879 | uint16_t crc; |
880 | |
881 | if (len>3) { |
882 | if (d[0]&(1<<3)) |
883 | strncat(status,"ProtExt ",DBD15STATLEN); |
884 | if (d[0]&1) { |
885 | // error |
886 | strncat(status,"Error ",DBD15STATLEN); |
887 | switch (d[1]) { |
888 | case 0x01: |
889 | strncat(status,"01:notSupp",DBD15STATLEN); |
15c4dc5a |
890 | break; |
9455b51c |
891 | case 0x02: |
892 | strncat(status,"02:notRecog",DBD15STATLEN); |
893 | break; |
894 | case 0x03: |
895 | strncat(status,"03:optNotSupp",DBD15STATLEN); |
896 | break; |
897 | case 0x0f: |
898 | strncat(status,"0f:noInfo",DBD15STATLEN); |
899 | break; |
900 | case 0x10: |
901 | strncat(status,"10:dontExist",DBD15STATLEN); |
902 | break; |
903 | case 0x11: |
904 | strncat(status,"11:lockAgain",DBD15STATLEN); |
905 | break; |
906 | case 0x12: |
907 | strncat(status,"12:locked",DBD15STATLEN); |
908 | break; |
909 | case 0x13: |
910 | strncat(status,"13:progErr",DBD15STATLEN); |
911 | break; |
912 | case 0x14: |
913 | strncat(status,"14:lockErr",DBD15STATLEN); |
914 | break; |
915 | default: |
916 | strncat(status,"unknownErr",DBD15STATLEN); |
15c4dc5a |
917 | } |
9455b51c |
918 | strncat(status," ",DBD15STATLEN); |
919 | } else { |
920 | strncat(status,"NoErr ",DBD15STATLEN); |
15c4dc5a |
921 | } |
9455b51c |
922 | |
923 | crc=Crc(d,len-2); |
924 | if ( (( crc & 0xff ) == d[len-2]) && (( crc >> 8 ) == d[len-1]) ) |
925 | strncat(status,"CrcOK",DBD15STATLEN); |
926 | else |
927 | strncat(status,"CrcFail!",DBD15STATLEN); |
928 | |
929 | Dbprintf("%s",status); |
15c4dc5a |
930 | } |
931 | } |
932 | |
9455b51c |
933 | |
934 | |
935 | /////////////////////////////////////////////////////////////////////// |
936 | // Functions called via USB/Client |
937 | /////////////////////////////////////////////////////////////////////// |
938 | |
939 | void SetDebugIso15693(uint32_t debug) { |
940 | DEBUG=debug; |
941 | Dbprintf("Iso15693 Debug is now %s",DEBUG?"on":"off"); |
942 | return; |
943 | } |
944 | |
945 | |
946 | |
15c4dc5a |
947 | //----------------------------------------------------------------------------- |
948 | // Simulate an ISO15693 reader, perform anti-collision and then attempt to read a sector |
949 | // all demodulation performed in arm rather than host. - greg |
950 | //----------------------------------------------------------------------------- |
f7e3ed82 |
951 | void ReaderIso15693(uint32_t parameter) |
15c4dc5a |
952 | { |
953 | LED_A_ON(); |
954 | LED_B_ON(); |
955 | LED_C_OFF(); |
956 | LED_D_OFF(); |
957 | |
15c4dc5a |
958 | int answerLen1 = 0; |
959 | int answerLen2 = 0; |
960 | int answerLen3 = 0; |
3fe4ff4f |
961 | int i = 0; |
962 | int samples = 0; |
963 | int tsamples = 0; |
964 | int wait = 0; |
965 | int elapsed = 0; |
966 | uint8_t TagUID[8] = {0x00}; |
967 | |
09ffd16e |
968 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
15c4dc5a |
969 | |
09ffd16e |
970 | uint8_t *answer1 = BigBuf_get_addr() + 3660; |
971 | uint8_t *answer2 = BigBuf_get_addr() + 3760; |
972 | uint8_t *answer3 = BigBuf_get_addr() + 3860; |
15c4dc5a |
973 | // Blank arrays |
117d9ec2 |
974 | memset(answer1, 0x00, 300); |
15c4dc5a |
975 | |
3fe4ff4f |
976 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
15c4dc5a |
977 | // Setup SSC |
978 | FpgaSetupSsc(); |
979 | |
980 | // Start from off (no field generated) |
09ffd16e |
981 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
982 | SpinDelay(200); |
15c4dc5a |
983 | |
15c4dc5a |
984 | // Give the tags time to energize |
985 | FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_READER_RX_XCORR); |
986 | SpinDelay(200); |
987 | |
988 | LED_A_ON(); |
989 | LED_B_OFF(); |
990 | LED_C_OFF(); |
991 | LED_D_OFF(); |
992 | |
15c4dc5a |
993 | // FIRST WE RUN AN INVENTORY TO GET THE TAG UID |
994 | // THIS MEANS WE CAN PRE-BUILD REQUESTS TO SAVE CPU TIME |
15c4dc5a |
995 | |
996 | // Now send the IDENTIFY command |
997 | BuildIdentifyRequest(); |
3fe4ff4f |
998 | |
999 | TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); |
1000 | |
15c4dc5a |
1001 | // Now wait for a response |
1002 | answerLen1 = GetIso15693AnswerFromTag(answer1, 100, &samples, &elapsed) ; |
1003 | |
1004 | if (answerLen1 >=12) // we should do a better check than this |
1005 | { |
15c4dc5a |
1006 | TagUID[0] = answer1[2]; |
1007 | TagUID[1] = answer1[3]; |
1008 | TagUID[2] = answer1[4]; |
1009 | TagUID[3] = answer1[5]; |
1010 | TagUID[4] = answer1[6]; |
1011 | TagUID[5] = answer1[7]; |
1012 | TagUID[6] = answer1[8]; // IC Manufacturer code |
9455b51c |
1013 | TagUID[7] = answer1[9]; // always E0 |
15c4dc5a |
1014 | |
15c4dc5a |
1015 | } |
1016 | |
9455b51c |
1017 | Dbprintf("%d octets read from IDENTIFY request:", answerLen1); |
1018 | DbdecodeIso15693Answer(answerLen1,answer1); |
d19929cb |
1019 | Dbhexdump(answerLen1,answer1,true); |
9455b51c |
1020 | |
1021 | // UID is reverse |
1022 | if (answerLen1>=12) |
3fe4ff4f |
1023 | Dbprintf("UID = %02hX%02hX%02hX%02hX%02hX%02hX%02hX%02hX", |
1024 | TagUID[7],TagUID[6],TagUID[5],TagUID[4], |
1025 | TagUID[3],TagUID[2],TagUID[1],TagUID[0]); |
9455b51c |
1026 | |
1027 | |
1028 | Dbprintf("%d octets read from SELECT request:", answerLen2); |
1029 | DbdecodeIso15693Answer(answerLen2,answer2); |
d19929cb |
1030 | Dbhexdump(answerLen2,answer2,true); |
9455b51c |
1031 | |
1032 | Dbprintf("%d octets read from XXX request:", answerLen3); |
1033 | DbdecodeIso15693Answer(answerLen3,answer3); |
d19929cb |
1034 | Dbhexdump(answerLen3,answer3,true); |
9455b51c |
1035 | |
9455b51c |
1036 | // read all pages |
1037 | if (answerLen1>=12 && DEBUG) { |
1038 | i=0; |
1039 | while (i<32) { // sanity check, assume max 32 pages |
1040 | BuildReadBlockRequest(TagUID,i); |
1041 | TransmitTo15693Tag(ToSend,ToSendMax,&tsamples, &wait); |
1042 | answerLen2 = GetIso15693AnswerFromTag(answer2, 100, &samples, &elapsed); |
1043 | if (answerLen2>0) { |
1044 | Dbprintf("READ SINGLE BLOCK %d returned %d octets:",i,answerLen2); |
1045 | DbdecodeIso15693Answer(answerLen2,answer2); |
d19929cb |
1046 | Dbhexdump(answerLen2,answer2,true); |
9455b51c |
1047 | if ( *((uint32_t*) answer2) == 0x07160101 ) break; // exit on NoPageErr |
1048 | } |
1049 | i++; |
1050 | } |
1051 | } |
15c4dc5a |
1052 | |
15c4dc5a |
1053 | LED_A_OFF(); |
1054 | LED_B_OFF(); |
1055 | LED_C_OFF(); |
1056 | LED_D_OFF(); |
1057 | } |
1058 | |
15c4dc5a |
1059 | // Simulate an ISO15693 TAG, perform anti-collision and then print any reader commands |
1060 | // all demodulation performed in arm rather than host. - greg |
3fe4ff4f |
1061 | void SimTagIso15693(uint32_t parameter, uint8_t *uid) |
15c4dc5a |
1062 | { |
1063 | LED_A_ON(); |
1064 | LED_B_ON(); |
1065 | LED_C_OFF(); |
1066 | LED_D_OFF(); |
1067 | |
15c4dc5a |
1068 | int answerLen1 = 0; |
3fe4ff4f |
1069 | int samples = 0; |
1070 | int tsamples = 0; |
1071 | int wait = 0; |
1072 | int elapsed = 0; |
15c4dc5a |
1073 | |
7cc204bf |
1074 | FpgaDownloadAndGo(FPGA_BITSTREAM_HF); |
15c4dc5a |
1075 | |
09ffd16e |
1076 | uint8_t *buf = BigBuf_get_addr() + 3660; |
1077 | memset(buf, 0x00, 100); |
1078 | |
15c4dc5a |
1079 | SetAdcMuxFor(GPIO_MUXSEL_HIPKD); |
1080 | FpgaSetupSsc(); |
1081 | |
3fe4ff4f |
1082 | // Start from off (no field generated) |
09ffd16e |
1083 | FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); |
15c4dc5a |
1084 | SpinDelay(200); |
1085 | |
1086 | LED_A_OFF(); |
1087 | LED_B_OFF(); |
1088 | LED_C_ON(); |
1089 | LED_D_OFF(); |
1090 | |
3fe4ff4f |
1091 | // Listen to reader |
1092 | answerLen1 = GetIso15693AnswerFromSniff(buf, 100, &samples, &elapsed) ; |
15c4dc5a |
1093 | |
1094 | if (answerLen1 >=1) // we should do a better check than this |
1095 | { |
1096 | // Build a suitable reponse to the reader INVENTORY cocmmand |
3fe4ff4f |
1097 | // not so obsvious, but in the call to BuildInventoryResponse, the command is copied to the global ToSend buffer used below. |
1098 | |
1099 | BuildInventoryResponse(uid); |
1100 | |
15c4dc5a |
1101 | TransmitTo15693Reader(ToSend,ToSendMax, &tsamples, &wait); |
1102 | } |
1103 | |
1104 | Dbprintf("%d octets read from reader command: %x %x %x %x %x %x %x %x %x", answerLen1, |
3fe4ff4f |
1105 | buf[0], buf[1], buf[2], buf[3], |
1106 | buf[4], buf[5], buf[6], buf[7], buf[8]); |
1107 | |
1108 | Dbprintf("Simulationg uid: %x %x %x %x %x %x %x %x", |
1109 | uid[0], uid[1], uid[2], uid[3], |
1110 | uid[4], uid[5], uid[6], uid[7]); |
15c4dc5a |
1111 | |
1112 | LED_A_OFF(); |
1113 | LED_B_OFF(); |
1114 | LED_C_OFF(); |
1115 | LED_D_OFF(); |
1116 | } |
9455b51c |
1117 | |
1118 | |
1119 | // Since there is no standardized way of reading the AFI out of a tag, we will brute force it |
1120 | // (some manufactures offer a way to read the AFI, though) |
1121 | void BruteforceIso15693Afi(uint32_t speed) |
1122 | { |
1123 | uint8_t data[20]; |
1124 | uint8_t *recv=data; |
1125 | int datalen=0, recvlen=0; |
1126 | |
1127 | Iso15693InitReader(); |
1128 | |
1129 | // first without AFI |
1130 | // Tags should respond wihtout AFI and with AFI=0 even when AFI is active |
1131 | |
1132 | data[0]=ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH | |
1133 | ISO15_REQ_INVENTORY | ISO15_REQINV_SLOT1; |
1134 | data[1]=ISO15_CMD_INVENTORY; |
1135 | data[2]=0; // mask length |
1136 | datalen=AddCrc(data,3); |
1137 | recvlen=SendDataTag(data,datalen,0,speed,&recv); |
1138 | WDT_HIT(); |
1139 | if (recvlen>=12) { |
1140 | Dbprintf("NoAFI UID=%s",sprintUID(NULL,&recv[2])); |
1141 | } |
1142 | |
1143 | // now with AFI |
1144 | |
1145 | data[0]=ISO15_REQ_SUBCARRIER_SINGLE | ISO15_REQ_DATARATE_HIGH | |
1146 | ISO15_REQ_INVENTORY | ISO15_REQINV_AFI | ISO15_REQINV_SLOT1; |
1147 | data[1]=ISO15_CMD_INVENTORY; |
1148 | data[2]=0; // AFI |
1149 | data[3]=0; // mask length |
1150 | |
1151 | for (int i=0;i<256;i++) { |
1152 | data[2]=i & 0xFF; |
1153 | datalen=AddCrc(data,4); |
1154 | recvlen=SendDataTag(data,datalen,0,speed,&recv); |
1155 | WDT_HIT(); |
1156 | if (recvlen>=12) { |
1157 | Dbprintf("AFI=%i UID=%s",i,sprintUID(NULL,&recv[2])); |
1158 | } |
1159 | } |
1160 | Dbprintf("AFI Bruteforcing done."); |
1161 | |
1162 | } |
1163 | |
1164 | // Allows to directly send commands to the tag via the client |
1165 | void DirectTag15693Command(uint32_t datalen,uint32_t speed, uint32_t recv, uint8_t data[]) { |
1166 | |
1167 | int recvlen=0; |
117d9ec2 |
1168 | uint8_t *recvbuf = BigBuf_get_addr(); |
902cb3c0 |
1169 | // UsbCommand n; |
9455b51c |
1170 | |
1171 | if (DEBUG) { |
1172 | Dbprintf("SEND"); |
d19929cb |
1173 | Dbhexdump(datalen,data,true); |
9455b51c |
1174 | } |
1175 | |
1176 | recvlen=SendDataTag(data,datalen,1,speed,(recv?&recvbuf:NULL)); |
1177 | |
1178 | if (recv) { |
9455b51c |
1179 | LED_B_ON(); |
902cb3c0 |
1180 | cmd_send(CMD_ACK,recvlen>48?48:recvlen,0,0,recvbuf,48); |
9455b51c |
1181 | LED_B_OFF(); |
1182 | |
1183 | if (DEBUG) { |
1184 | Dbprintf("RECV"); |
1185 | DbdecodeIso15693Answer(recvlen,recvbuf); |
d19929cb |
1186 | Dbhexdump(recvlen,recvbuf,true); |
9455b51c |
1187 | } |
1188 | } |
1189 | |
1190 | } |
1191 | |
1192 | |
1193 | |
1194 | |
1195 | // -------------------------------------------------------------------- |
1196 | // -- Misc & deprecated functions |
1197 | // -------------------------------------------------------------------- |
1198 | |
e6304bca |
1199 | /* |
9455b51c |
1200 | |
1201 | // do not use; has a fix UID |
1202 | static void __attribute__((unused)) BuildSysInfoRequest(uint8_t *uid) |
1203 | { |
1204 | uint8_t cmd[12]; |
1205 | |
1206 | uint16_t crc; |
1207 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
1208 | // followed by teh block data |
1209 | // one sub-carrier, inventory, 1 slot, fast rate |
1210 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit |
1211 | // System Information command code |
1212 | cmd[1] = 0x2B; |
1213 | // UID may be optionally specified here |
1214 | // 64-bit UID |
1215 | cmd[2] = 0x32; |
1216 | cmd[3]= 0x4b; |
1217 | cmd[4] = 0x03; |
1218 | cmd[5] = 0x01; |
1219 | cmd[6] = 0x00; |
1220 | cmd[7] = 0x10; |
1221 | cmd[8] = 0x05; |
1222 | cmd[9]= 0xe0; // always e0 (not exactly unique) |
1223 | //Now the CRC |
1224 | crc = Crc(cmd, 10); // the crc needs to be calculated over 2 bytes |
1225 | cmd[10] = crc & 0xff; |
1226 | cmd[11] = crc >> 8; |
1227 | |
1228 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
1229 | } |
1230 | |
9455b51c |
1231 | |
1232 | // do not use; has a fix UID |
1233 | static void __attribute__((unused)) BuildReadMultiBlockRequest(uint8_t *uid) |
1234 | { |
1235 | uint8_t cmd[14]; |
1236 | |
1237 | uint16_t crc; |
1238 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
1239 | // followed by teh block data |
1240 | // one sub-carrier, inventory, 1 slot, fast rate |
1241 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit |
1242 | // READ Multi BLOCK command code |
1243 | cmd[1] = 0x23; |
1244 | // UID may be optionally specified here |
1245 | // 64-bit UID |
1246 | cmd[2] = 0x32; |
1247 | cmd[3]= 0x4b; |
1248 | cmd[4] = 0x03; |
1249 | cmd[5] = 0x01; |
1250 | cmd[6] = 0x00; |
1251 | cmd[7] = 0x10; |
1252 | cmd[8] = 0x05; |
1253 | cmd[9]= 0xe0; // always e0 (not exactly unique) |
1254 | // First Block number to read |
1255 | cmd[10] = 0x00; |
1256 | // Number of Blocks to read |
1257 | cmd[11] = 0x2f; // read quite a few |
1258 | //Now the CRC |
1259 | crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes |
1260 | cmd[12] = crc & 0xff; |
1261 | cmd[13] = crc >> 8; |
1262 | |
1263 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
1264 | } |
1265 | |
1266 | // do not use; has a fix UID |
1267 | static void __attribute__((unused)) BuildArbitraryRequest(uint8_t *uid,uint8_t CmdCode) |
1268 | { |
1269 | uint8_t cmd[14]; |
1270 | |
1271 | uint16_t crc; |
1272 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
1273 | // followed by teh block data |
1274 | // one sub-carrier, inventory, 1 slot, fast rate |
1275 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit |
1276 | // READ BLOCK command code |
1277 | cmd[1] = CmdCode; |
1278 | // UID may be optionally specified here |
1279 | // 64-bit UID |
1280 | cmd[2] = 0x32; |
1281 | cmd[3]= 0x4b; |
1282 | cmd[4] = 0x03; |
1283 | cmd[5] = 0x01; |
1284 | cmd[6] = 0x00; |
1285 | cmd[7] = 0x10; |
1286 | cmd[8] = 0x05; |
1287 | cmd[9]= 0xe0; // always e0 (not exactly unique) |
1288 | // Parameter |
1289 | cmd[10] = 0x00; |
1290 | cmd[11] = 0x0a; |
1291 | |
1292 | // cmd[12] = 0x00; |
1293 | // cmd[13] = 0x00; //Now the CRC |
1294 | crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes |
1295 | cmd[12] = crc & 0xff; |
1296 | cmd[13] = crc >> 8; |
1297 | |
1298 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
1299 | } |
1300 | |
1301 | // do not use; has a fix UID |
1302 | static void __attribute__((unused)) BuildArbitraryCustomRequest(uint8_t uid[], uint8_t CmdCode) |
1303 | { |
1304 | uint8_t cmd[14]; |
1305 | |
1306 | uint16_t crc; |
1307 | // If we set the Option_Flag in this request, the VICC will respond with the secuirty status of the block |
1308 | // followed by teh block data |
1309 | // one sub-carrier, inventory, 1 slot, fast rate |
1310 | cmd[0] = (1 << 5) | (1 << 1); // no SELECT bit |
1311 | // READ BLOCK command code |
1312 | cmd[1] = CmdCode; |
1313 | // UID may be optionally specified here |
1314 | // 64-bit UID |
1315 | cmd[2] = 0x32; |
1316 | cmd[3]= 0x4b; |
1317 | cmd[4] = 0x03; |
1318 | cmd[5] = 0x01; |
1319 | cmd[6] = 0x00; |
1320 | cmd[7] = 0x10; |
1321 | cmd[8] = 0x05; |
1322 | cmd[9]= 0xe0; // always e0 (not exactly unique) |
1323 | // Parameter |
1324 | cmd[10] = 0x05; // for custom codes this must be manufcturer code |
1325 | cmd[11] = 0x00; |
1326 | |
1327 | // cmd[12] = 0x00; |
1328 | // cmd[13] = 0x00; //Now the CRC |
1329 | crc = Crc(cmd, 12); // the crc needs to be calculated over 2 bytes |
1330 | cmd[12] = crc & 0xff; |
1331 | cmd[13] = crc >> 8; |
1332 | |
1333 | CodeIso15693AsReader(cmd, sizeof(cmd)); |
1334 | } |
1335 | |
1336 | |
1337 | |
1338 | |
e6304bca |
1339 | */ |
9455b51c |
1340 | |
1341 | |