1 /******************************************************************************
2 *
3 * Copyright (C) 2010-2014 Broadcom Corporation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 /******************************************************************************
20 *
21 * This file contains the implementation for Type 1 tag in Reader/Writer
22 * mode.
23 *
24 ******************************************************************************/
25 #include <string>
26
27 #include <android-base/stringprintf.h>
28 #include <base/logging.h>
29
30 #include "nfc_target.h"
31
32 #include "gki.h"
33 #include "nci_hmsgs.h"
34 #include "nfc_api.h"
35 #include "nfc_int.h"
36 #include "rw_api.h"
37 #include "rw_int.h"
38
39 using android::base::StringPrintf;
40
41 extern bool nfc_debug_enabled;
42 extern unsigned char appl_dta_mode_flag;
43
44 /* Local Functions */
45 static tRW_EVENT rw_t1t_handle_rid_rsp(NFC_HDR* p_pkt);
46 static void rw_t1t_data_cback(uint8_t conn_id, tNFC_CONN_EVT event,
47 tNFC_CONN* p_data);
48 static void rw_t1t_process_frame_error(void);
49 static void rw_t1t_process_error(void);
50 static void rw_t1t_handle_presence_check_rsp(tNFC_STATUS status);
51 static std::string rw_t1t_get_state_name(uint8_t state);
52
53 /*******************************************************************************
54 **
55 ** Function rw_t1t_data_cback
56 **
57 ** Description This callback function handles data from NFCC.
58 **
59 ** Returns none
60 **
61 *******************************************************************************/
rw_t1t_data_cback(uint8_t conn_id,tNFC_CONN_EVT event,tNFC_CONN * p_data)62 static void rw_t1t_data_cback(__attribute__((unused)) uint8_t conn_id,
63 __attribute__((unused)) tNFC_CONN_EVT event,
64 tNFC_CONN* p_data) {
65 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
66 tRW_EVENT rw_event = RW_RAW_FRAME_EVT;
67 bool b_notify = true;
68 tRW_DATA evt_data;
69 NFC_HDR* p_pkt;
70 uint8_t* p;
71 tT1T_CMD_RSP_INFO* p_cmd_rsp_info =
72 (tT1T_CMD_RSP_INFO*)rw_cb.tcb.t1t.p_cmd_rsp_info;
73 uint8_t begin_state = p_t1t->state;
74
75 p_pkt = (NFC_HDR*)(p_data->data.p_data);
76 if (p_pkt == NULL) return;
77 /* Assume the data is just the response byte sequence */
78 p = (uint8_t*)(p_pkt + 1) + p_pkt->offset;
79
80 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
81 "state:%s (%d)", rw_t1t_get_state_name(p_t1t->state).c_str(),
82 p_t1t->state);
83
84 evt_data.status = NFC_STATUS_OK;
85
86 if ((p_t1t->state == RW_T1T_STATE_IDLE) || (!p_cmd_rsp_info)) {
87 /* If previous command was retransmitted and if response is pending to
88 * previous command retransmission,
89 * check if lenght and ADD/ADD8/ADDS field matches the expected value of
90 * previous
91 * retransmited command response. However, ignore ADD field if the command
92 * was RALL/RID
93 */
94 if ((p_t1t->prev_cmd_rsp_info.pend_retx_rsp) &&
95 (p_t1t->prev_cmd_rsp_info.rsp_len == p_pkt->len) &&
96 ((p_t1t->prev_cmd_rsp_info.op_code == T1T_CMD_RID) ||
97 (p_t1t->prev_cmd_rsp_info.op_code == T1T_CMD_RALL) ||
98 (p_t1t->prev_cmd_rsp_info.addr == *p))) {
99 /* Response to previous command retransmission */
100 LOG(ERROR) << StringPrintf(
101 "T1T Response to previous command in Idle state. command=0x%02x, "
102 "Remaining max retx rsp:0x%02x ",
103 p_t1t->prev_cmd_rsp_info.op_code,
104 p_t1t->prev_cmd_rsp_info.pend_retx_rsp - 1);
105 p_t1t->prev_cmd_rsp_info.pend_retx_rsp--;
106 GKI_freebuf(p_pkt);
107 } else {
108 /* Raw frame event */
109 evt_data.data.p_data = p_pkt;
110 (*rw_cb.p_cback)(RW_T1T_RAW_FRAME_EVT, &evt_data);
111 }
112 return;
113 }
114
115 #if (RW_STATS_INCLUDED == TRUE)
116 /* Update rx stats */
117 rw_main_update_rx_stats(p_pkt->len);
118 #endif /* RW_STATS_INCLUDED */
119
120 if ((p_pkt->len != p_cmd_rsp_info->rsp_len) ||
121 ((p_cmd_rsp_info->opcode != T1T_CMD_RALL) &&
122 (p_cmd_rsp_info->opcode != T1T_CMD_RID) && (*p != p_t1t->addr)))
123
124 {
125 /* If previous command was retransmitted and if response is pending to
126 * previous command retransmission,
127 * then check if lenght and ADD/ADD8/ADDS field matches the expected value
128 * of previous
129 * retransmited command response. However, ignore ADD field if the command
130 * was RALL/RID
131 */
132 if ((p_t1t->prev_cmd_rsp_info.pend_retx_rsp) &&
133 (p_t1t->prev_cmd_rsp_info.rsp_len == p_pkt->len) &&
134 ((p_t1t->prev_cmd_rsp_info.op_code == T1T_CMD_RID) ||
135 (p_t1t->prev_cmd_rsp_info.op_code == T1T_CMD_RALL) ||
136 (p_t1t->prev_cmd_rsp_info.addr == *p))) {
137 LOG(ERROR) << StringPrintf(
138 "T1T Response to previous command. command=0x%02x, Remaining max "
139 "retx rsp:0x%02x",
140 p_t1t->prev_cmd_rsp_info.op_code,
141 p_t1t->prev_cmd_rsp_info.pend_retx_rsp - 1);
142 p_t1t->prev_cmd_rsp_info.pend_retx_rsp--;
143 } else {
144 /* Stop timer as some response to current command is received */
145 nfc_stop_quick_timer(&p_t1t->timer);
146 /* Retrasmit the last sent command if retry-count < max retry */
147 LOG(ERROR) << StringPrintf(
148 "T1T Frame error. state=%s command (opcode) = 0x%02x",
149 rw_t1t_get_state_name(p_t1t->state).c_str(), p_cmd_rsp_info->opcode);
150 rw_t1t_process_frame_error();
151 }
152 GKI_freebuf(p_pkt);
153 return;
154 }
155
156 /* Stop timer as response to current command is received */
157 nfc_stop_quick_timer(&p_t1t->timer);
158
159 DLOG_IF(INFO, nfc_debug_enabled)
160 << StringPrintf("RW RECV [%s]:0x%x RSP", t1t_info_to_str(p_cmd_rsp_info),
161 p_cmd_rsp_info->opcode);
162
163 /* If we did not receive response to all retransmitted previous command,
164 * dont expect that as response have come for the current command itself.
165 */
166 if (p_t1t->prev_cmd_rsp_info.pend_retx_rsp)
167 memset(&(p_t1t->prev_cmd_rsp_info), 0, sizeof(tRW_T1T_PREV_CMD_RSP_INFO));
168
169 if (rw_cb.cur_retry) {
170 /* If the current command was retransmitted to get this response, we might
171 get
172 response later to all or some of the retrasnmission of the current
173 command
174 */
175 p_t1t->prev_cmd_rsp_info.addr = ((p_cmd_rsp_info->opcode != T1T_CMD_RALL) &&
176 (p_cmd_rsp_info->opcode != T1T_CMD_RID))
177 ? p_t1t->addr
178 : 0;
179 p_t1t->prev_cmd_rsp_info.rsp_len = p_cmd_rsp_info->rsp_len;
180 p_t1t->prev_cmd_rsp_info.op_code = p_cmd_rsp_info->opcode;
181 p_t1t->prev_cmd_rsp_info.pend_retx_rsp = (uint8_t)rw_cb.cur_retry;
182 }
183
184 rw_cb.cur_retry = 0;
185
186 if (p_cmd_rsp_info->opcode == T1T_CMD_RID) {
187 rw_event = rw_t1t_handle_rid_rsp(p_pkt);
188 } else {
189 rw_event =
190 rw_t1t_handle_rsp(p_cmd_rsp_info, &b_notify, p, &evt_data.status);
191 }
192
193 if (b_notify) {
194 if ((p_t1t->state != RW_T1T_STATE_READ) &&
195 (p_t1t->state != RW_T1T_STATE_WRITE)) {
196 GKI_freebuf(p_pkt);
197 evt_data.data.p_data = NULL;
198 } else {
199 evt_data.data.p_data = p_pkt;
200 }
201 rw_t1t_handle_op_complete();
202 (*rw_cb.p_cback)(rw_event, &evt_data);
203 } else
204 GKI_freebuf(p_pkt);
205
206 if (begin_state != p_t1t->state) {
207 DLOG_IF(INFO, nfc_debug_enabled)
208 << StringPrintf("RW T1T state changed:<%s> -> <%s>",
209 rw_t1t_get_state_name(begin_state).c_str(),
210 rw_t1t_get_state_name(p_t1t->state).c_str());
211 }
212 }
213
214 /*******************************************************************************
215 **
216 ** Function rw_t1t_conn_cback
217 **
218 ** Description This callback function receives the events/data from NFCC.
219 **
220 ** Returns none
221 **
222 *******************************************************************************/
rw_t1t_conn_cback(uint8_t conn_id,tNFC_CONN_EVT event,tNFC_CONN * p_data)223 void rw_t1t_conn_cback(uint8_t conn_id, tNFC_CONN_EVT event,
224 tNFC_CONN* p_data) {
225 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
226
227 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
228 "rw_t1t_conn_cback: conn_id=%i, evt=0x%x", conn_id, event);
229 /* Only handle static conn_id */
230 if (conn_id != NFC_RF_CONN_ID) {
231 LOG(WARNING) << StringPrintf(
232 "rw_t1t_conn_cback - Not static connection id: =%i", conn_id);
233 return;
234 }
235
236 switch (event) {
237 case NFC_CONN_CREATE_CEVT:
238 case NFC_CONN_CLOSE_CEVT:
239 break;
240
241 case NFC_DEACTIVATE_CEVT:
242 #if (RW_STATS_INCLUDED == TRUE)
243 /* Display stats */
244 rw_main_log_stats();
245 #endif /* RW_STATS_INCLUDED */
246
247 /* Stop t1t timer (if started) */
248 nfc_stop_quick_timer(&p_t1t->timer);
249
250 /* Free cmd buf for retransmissions */
251 if (p_t1t->p_cur_cmd_buf) {
252 GKI_freebuf(p_t1t->p_cur_cmd_buf);
253 p_t1t->p_cur_cmd_buf = NULL;
254 }
255
256 p_t1t->state = RW_T1T_STATE_NOT_ACTIVATED;
257 NFC_SetStaticRfCback(NULL);
258 break;
259
260 case NFC_DATA_CEVT:
261 if (p_data != NULL) {
262 if (p_data->data.status == NFC_STATUS_OK) {
263 rw_t1t_data_cback(conn_id, event, p_data);
264 break;
265 } else if (p_data->data.p_data != NULL) {
266 /* Free the response buffer in case of error response */
267 GKI_freebuf((NFC_HDR*)(p_data->data.p_data));
268 p_data->data.p_data = NULL;
269 }
270 }
271 /* Data event with error status...fall through to NFC_ERROR_CEVT case */
272
273 case NFC_ERROR_CEVT:
274 if ((p_t1t->state == RW_T1T_STATE_NOT_ACTIVATED) ||
275 (p_t1t->state == RW_T1T_STATE_IDLE)) {
276 #if (RW_STATS_INCLUDED == TRUE)
277 rw_main_update_trans_error_stats();
278 #endif /* RW_STATS_INCLUDED */
279
280 tRW_READ_DATA evt_data;
281 if (event == NFC_ERROR_CEVT)
282 evt_data.status = (tNFC_STATUS)(*(uint8_t*)p_data);
283 else if (p_data)
284 evt_data.status = p_data->status;
285 else
286 evt_data.status = NFC_STATUS_FAILED;
287
288 evt_data.p_data = NULL;
289 tRW_DATA rw_data;
290 rw_data.data = evt_data;
291 (*rw_cb.p_cback)(RW_T1T_INTF_ERROR_EVT, &rw_data);
292 break;
293 }
294 nfc_stop_quick_timer(&p_t1t->timer);
295
296 #if (RW_STATS_INCLUDED == TRUE)
297 rw_main_update_trans_error_stats();
298 #endif /* RW_STATS_INCLUDED */
299
300 if (p_t1t->state == RW_T1T_STATE_CHECK_PRESENCE) {
301 rw_t1t_handle_presence_check_rsp(NFC_STATUS_FAILED);
302 } else {
303 rw_t1t_process_error();
304 }
305 break;
306
307 default:
308 break;
309 }
310 }
311
312 /*******************************************************************************
313 **
314 ** Function rw_t1t_send_static_cmd
315 **
316 ** Description This function composes a Type 1 Tag command for static
317 ** memory and send through NCI to NFCC.
318 **
319 ** Returns NFC_STATUS_OK if the command is successfuly sent to NCI
320 ** otherwise, error status
321 **
322 *******************************************************************************/
rw_t1t_send_static_cmd(uint8_t opcode,uint8_t add,uint8_t dat)323 tNFC_STATUS rw_t1t_send_static_cmd(uint8_t opcode, uint8_t add, uint8_t dat) {
324 tNFC_STATUS status = NFC_STATUS_FAILED;
325 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
326 const tT1T_CMD_RSP_INFO* p_cmd_rsp_info = t1t_cmd_to_rsp_info(opcode);
327 NFC_HDR* p_data;
328 uint8_t* p;
329
330 if (p_cmd_rsp_info) {
331 /* a valid opcode for RW */
332 p_data = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
333 if (p_data) {
334 p_t1t->p_cmd_rsp_info = (tT1T_CMD_RSP_INFO*)p_cmd_rsp_info;
335 p_t1t->addr = add;
336 p_data->offset = NCI_MSG_OFFSET_SIZE + NCI_DATA_HDR_SIZE;
337 p = (uint8_t*)(p_data + 1) + p_data->offset;
338 UINT8_TO_BE_STREAM(p, opcode);
339 UINT8_TO_BE_STREAM(p, add);
340 UINT8_TO_BE_STREAM(p, dat);
341
342 ARRAY_TO_STREAM(p, p_t1t->mem, T1T_CMD_UID_LEN);
343 p_data->len = p_cmd_rsp_info->cmd_len;
344
345 /* Indicate first attempt to send command, back up cmd buffer in case
346 * needed for retransmission */
347 rw_cb.cur_retry = 0;
348 memcpy(p_t1t->p_cur_cmd_buf, p_data,
349 sizeof(NFC_HDR) + p_data->offset + p_data->len);
350
351 #if (RW_STATS_INCLUDED == TRUE)
352 /* Update stats */
353 rw_main_update_tx_stats(p_data->len, false);
354 #endif /* RW_STATS_INCLUDED */
355
356 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
357 "RW SENT [%s]:0x%x CMD", t1t_info_to_str(p_cmd_rsp_info),
358 p_cmd_rsp_info->opcode);
359 status = NFC_SendData(NFC_RF_CONN_ID, p_data);
360 if (status == NFC_STATUS_OK) {
361 nfc_start_quick_timer(
362 &p_t1t->timer, NFC_TTYPE_RW_T1T_RESPONSE,
363 (RW_T1T_TOUT_RESP * QUICK_TIMER_TICKS_PER_SEC) / 1000);
364 }
365 } else {
366 status = NFC_STATUS_NO_BUFFERS;
367 }
368 }
369 return status;
370 }
371
372 /*******************************************************************************
373 **
374 ** Function rw_t1t_send_dyn_cmd
375 **
376 ** Description This function composes a Type 1 Tag command for dynamic
377 ** memory and send through NCI to NFCC.
378 **
379 ** Returns NFC_STATUS_OK if the command is successfuly sent to NCI
380 ** otherwise, error status
381 **
382 *******************************************************************************/
rw_t1t_send_dyn_cmd(uint8_t opcode,uint8_t add,uint8_t * p_dat)383 tNFC_STATUS rw_t1t_send_dyn_cmd(uint8_t opcode, uint8_t add, uint8_t* p_dat) {
384 tNFC_STATUS status = NFC_STATUS_FAILED;
385 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
386 const tT1T_CMD_RSP_INFO* p_cmd_rsp_info = t1t_cmd_to_rsp_info(opcode);
387 NFC_HDR* p_data;
388 uint8_t* p;
389
390 if (p_cmd_rsp_info) {
391 /* a valid opcode for RW */
392 p_data = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
393 if (p_data) {
394 p_t1t->p_cmd_rsp_info = (tT1T_CMD_RSP_INFO*)p_cmd_rsp_info;
395 p_t1t->addr = add;
396 p_data->offset = NCI_MSG_OFFSET_SIZE + NCI_DATA_HDR_SIZE;
397 p = (uint8_t*)(p_data + 1) + p_data->offset;
398 UINT8_TO_BE_STREAM(p, opcode);
399 UINT8_TO_BE_STREAM(p, add);
400
401 if (p_dat) {
402 ARRAY_TO_STREAM(p, p_dat, 8);
403 } else {
404 memset(p, 0, 8);
405 p += 8;
406 }
407 ARRAY_TO_STREAM(p, p_t1t->mem, T1T_CMD_UID_LEN);
408 p_data->len = p_cmd_rsp_info->cmd_len;
409
410 /* Indicate first attempt to send command, back up cmd buffer in case
411 * needed for retransmission */
412 rw_cb.cur_retry = 0;
413 memcpy(p_t1t->p_cur_cmd_buf, p_data,
414 sizeof(NFC_HDR) + p_data->offset + p_data->len);
415
416 #if (RW_STATS_INCLUDED == TRUE)
417 /* Update stats */
418 rw_main_update_tx_stats(p_data->len, false);
419 #endif /* RW_STATS_INCLUDED */
420
421 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
422 "RW SENT [%s]:0x%x CMD", t1t_info_to_str(p_cmd_rsp_info),
423 p_cmd_rsp_info->opcode);
424
425 status = NFC_SendData(NFC_RF_CONN_ID, p_data);
426 if (status == NFC_STATUS_OK) {
427 nfc_start_quick_timer(
428 &p_t1t->timer, NFC_TTYPE_RW_T1T_RESPONSE,
429 (RW_T1T_TOUT_RESP * QUICK_TIMER_TICKS_PER_SEC) / 1000);
430 }
431 } else {
432 status = NFC_STATUS_NO_BUFFERS;
433 }
434 }
435 return status;
436 }
437
438 /*****************************************************************************
439 **
440 ** Function rw_t1t_handle_rid_rsp
441 **
442 ** Description Handles response to RID: Collects HR, UID, notify up the
443 ** stack
444 **
445 ** Returns event to notify application
446 **
447 *****************************************************************************/
rw_t1t_handle_rid_rsp(NFC_HDR * p_pkt)448 static tRW_EVENT rw_t1t_handle_rid_rsp(NFC_HDR* p_pkt) {
449 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
450 tRW_DATA evt_data;
451 uint8_t* p_rid_rsp;
452
453 evt_data.status = NFC_STATUS_OK;
454 evt_data.data.p_data = p_pkt;
455
456 /* Assume the data is just the response byte sequence */
457 p_rid_rsp = (uint8_t*)(p_pkt + 1) + p_pkt->offset;
458
459 /* Response indicates tag is present */
460 if (p_t1t->state == RW_T1T_STATE_CHECK_PRESENCE) {
461 /* If checking for the presence of the tag then just notify */
462 return RW_T1T_PRESENCE_CHECK_EVT;
463 }
464
465 /* Extract HR and UID from response */
466 STREAM_TO_ARRAY(p_t1t->hr, p_rid_rsp, T1T_HR_LEN);
467
468 DLOG_IF(INFO, nfc_debug_enabled)
469 << StringPrintf("hr0:0x%x, hr1:0x%x", p_t1t->hr[0], p_t1t->hr[1]);
470 DLOG_IF(INFO, nfc_debug_enabled)
471 << StringPrintf("UID0-3=%02x%02x%02x%02x", p_rid_rsp[0], p_rid_rsp[1],
472 p_rid_rsp[2], p_rid_rsp[3]);
473
474 /* Fetch UID0-3 from RID response message */
475 STREAM_TO_ARRAY(p_t1t->mem, p_rid_rsp, T1T_CMD_UID_LEN);
476
477 /* Notify RID response Event */
478 return RW_T1T_RID_EVT;
479 }
480
481 /*******************************************************************************
482 **
483 ** Function rw_t1t_select
484 **
485 ** Description This function will set the callback function to
486 ** receive data from lower layers and also send rid command
487 **
488 ** Returns none
489 **
490 *******************************************************************************/
rw_t1t_select(uint8_t hr[T1T_HR_LEN],uint8_t uid[T1T_CMD_UID_LEN])491 tNFC_STATUS rw_t1t_select(uint8_t hr[T1T_HR_LEN],
492 uint8_t uid[T1T_CMD_UID_LEN]) {
493 tNFC_STATUS status = NFC_STATUS_FAILED;
494 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
495
496 p_t1t->state = RW_T1T_STATE_NOT_ACTIVATED;
497
498 /* Alloc cmd buf for retransmissions */
499 if (p_t1t->p_cur_cmd_buf == NULL) {
500 p_t1t->p_cur_cmd_buf = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
501 if (p_t1t->p_cur_cmd_buf == NULL) {
502 LOG(ERROR) << StringPrintf(
503 "rw_t1t_select: unable to allocate buffer for retransmission");
504 return status;
505 }
506 }
507
508 memcpy(p_t1t->hr, hr, T1T_HR_LEN);
509 memcpy(p_t1t->mem, uid, T1T_CMD_UID_LEN);
510
511 NFC_SetStaticRfCback(rw_t1t_conn_cback);
512
513 p_t1t->state = RW_T1T_STATE_IDLE;
514
515 return NFC_STATUS_OK;
516 }
517
518 /*******************************************************************************
519 **
520 ** Function rw_t1t_process_timeout
521 **
522 ** Description process timeout event
523 **
524 ** Returns none
525 **
526 *******************************************************************************/
rw_t1t_process_timeout(TIMER_LIST_ENT * p_tle)527 void rw_t1t_process_timeout(__attribute__((unused)) TIMER_LIST_ENT* p_tle) {
528 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
529
530 LOG(ERROR) << StringPrintf("T1T timeout. state=%s command (opcode)=0x%02x ",
531 rw_t1t_get_state_name(p_t1t->state).c_str(),
532 (rw_cb.tcb.t1t.p_cmd_rsp_info)->opcode);
533
534 if (p_t1t->state == RW_T1T_STATE_CHECK_PRESENCE) {
535 /* Tag has moved from range */
536 rw_t1t_handle_presence_check_rsp(NFC_STATUS_FAILED);
537 } else if (p_t1t->state != RW_T1T_STATE_IDLE) {
538 rw_t1t_process_error();
539 }
540 }
541
542 /*******************************************************************************
543 **
544 ** Function rw_t1t_process_frame_error
545 **
546 ** Description Process frame crc error
547 **
548 ** Returns none
549 **
550 *******************************************************************************/
rw_t1t_process_frame_error(void)551 static void rw_t1t_process_frame_error(void) {
552 #if (RW_STATS_INCLUDED == TRUE)
553 /* Update stats */
554 rw_main_update_crc_error_stats();
555 #endif /* RW_STATS_INCLUDED */
556
557 /* Process the error */
558 rw_t1t_process_error();
559 }
560
561 /*******************************************************************************
562 **
563 ** Function rw_t1t_process_error
564 **
565 ** Description process timeout event
566 **
567 ** Returns none
568 **
569 *******************************************************************************/
rw_t1t_process_error(void)570 static void rw_t1t_process_error(void) {
571 tRW_EVENT rw_event;
572 NFC_HDR* p_cmd_buf;
573 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
574 tT1T_CMD_RSP_INFO* p_cmd_rsp_info =
575 (tT1T_CMD_RSP_INFO*)rw_cb.tcb.t1t.p_cmd_rsp_info;
576
577 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf("State: %u", p_t1t->state);
578
579 /* Retry sending command if retry-count < max */
580 if (rw_cb.cur_retry < RW_MAX_RETRIES) {
581 /* retry sending the command */
582 rw_cb.cur_retry++;
583
584 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
585 "T1T retransmission attempt %i of %i", rw_cb.cur_retry, RW_MAX_RETRIES);
586
587 /* allocate a new buffer for message */
588 p_cmd_buf = (NFC_HDR*)GKI_getpoolbuf(NFC_RW_POOL_ID);
589 if (p_cmd_buf != NULL) {
590 memcpy(p_cmd_buf, p_t1t->p_cur_cmd_buf, sizeof(NFC_HDR) +
591 p_t1t->p_cur_cmd_buf->offset +
592 p_t1t->p_cur_cmd_buf->len);
593
594 #if (RW_STATS_INCLUDED == TRUE)
595 /* Update stats */
596 rw_main_update_tx_stats(p_cmd_buf->len, true);
597 #endif /* RW_STATS_INCLUDED */
598
599 if (NFC_SendData(NFC_RF_CONN_ID, p_cmd_buf) == NFC_STATUS_OK) {
600 /* Start timer for waiting for response */
601 nfc_start_quick_timer(
602 &p_t1t->timer, NFC_TTYPE_RW_T1T_RESPONSE,
603 (RW_T1T_TOUT_RESP * QUICK_TIMER_TICKS_PER_SEC) / 1000);
604
605 return;
606 }
607 }
608 } else {
609 /* we might get response later to all or some of the retrasnmission
610 * of the current command, update previous command response information */
611 DLOG_IF(INFO, nfc_debug_enabled) << StringPrintf(
612 "T1T maximum retransmission attempts reached (%i)", RW_MAX_RETRIES);
613 p_t1t->prev_cmd_rsp_info.addr = ((p_cmd_rsp_info->opcode != T1T_CMD_RALL) &&
614 (p_cmd_rsp_info->opcode != T1T_CMD_RID))
615 ? p_t1t->addr
616 : 0;
617 p_t1t->prev_cmd_rsp_info.rsp_len = p_cmd_rsp_info->rsp_len;
618 p_t1t->prev_cmd_rsp_info.op_code = p_cmd_rsp_info->opcode;
619 p_t1t->prev_cmd_rsp_info.pend_retx_rsp = RW_MAX_RETRIES;
620 }
621
622 #if (RW_STATS_INCLUDED == TRUE)
623 /* update failure count */
624 rw_main_update_fail_stats();
625 #endif /* RW_STATS_INCLUDED */
626
627 rw_event = rw_t1t_info_to_event(p_cmd_rsp_info);
628 if (p_t1t->state != RW_T1T_STATE_NOT_ACTIVATED) rw_t1t_handle_op_complete();
629
630 if (rw_event == RW_T2T_NDEF_DETECT_EVT) {
631 tRW_DETECT_NDEF_DATA ndef_data;
632 ndef_data.status = NFC_STATUS_TIMEOUT;
633 ndef_data.protocol = NFC_PROTOCOL_T1T;
634 ndef_data.flags = RW_NDEF_FL_UNKNOWN;
635 ndef_data.max_size = 0;
636 ndef_data.cur_size = 0;
637 tRW_DATA rw_data;
638 rw_data.ndef = ndef_data;
639 (*rw_cb.p_cback)(rw_event, &rw_data);
640 } else {
641 tRW_READ_DATA evt_data;
642 evt_data.status = NFC_STATUS_TIMEOUT;
643 evt_data.p_data = NULL;
644 tRW_DATA rw_data;
645 rw_data.data = evt_data;
646 (*rw_cb.p_cback)(rw_event, &rw_data);
647 }
648 }
649
650 /*****************************************************************************
651 **
652 ** Function rw_t1t_handle_presence_check_rsp
653 **
654 ** Description Handle response to presence check
655 **
656 ** Returns Nothing
657 **
658 *****************************************************************************/
rw_t1t_handle_presence_check_rsp(tNFC_STATUS status)659 void rw_t1t_handle_presence_check_rsp(tNFC_STATUS status) {
660 tRW_DATA rw_data;
661
662 /* Notify, Tag is present or not */
663 rw_data.data.status = status;
664 rw_t1t_handle_op_complete();
665
666 (*(rw_cb.p_cback))(RW_T1T_PRESENCE_CHECK_EVT, &rw_data);
667 }
668
669 /*****************************************************************************
670 **
671 ** Function rw_t1t_handle_op_complete
672 **
673 ** Description Reset to IDLE state
674 **
675 ** Returns Nothing
676 **
677 *****************************************************************************/
rw_t1t_handle_op_complete(void)678 void rw_t1t_handle_op_complete(void) {
679 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
680
681 p_t1t->state = RW_T1T_STATE_IDLE;
682 #if (RW_NDEF_INCLUDED == TRUE)
683 if (appl_dta_mode_flag == 0 && (p_t1t->state != RW_T1T_STATE_READ_NDEF)) {
684 p_t1t->b_update = false;
685 p_t1t->b_rseg = false;
686 }
687 p_t1t->substate = RW_T1T_SUBSTATE_NONE;
688 #endif
689 return;
690 }
691
692 /*****************************************************************************
693 **
694 ** Function RW_T1tPresenceCheck
695 **
696 ** Description
697 ** Check if the tag is still in the field.
698 **
699 ** The RW_T1T_PRESENCE_CHECK_EVT w/ status is used to indicate presence
700 ** or non-presence.
701 **
702 ** Returns
703 ** NFC_STATUS_OK, if raw data frame sent
704 ** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
705 ** NFC_STATUS_FAILED: other error
706 **
707 *****************************************************************************/
RW_T1tPresenceCheck(void)708 tNFC_STATUS RW_T1tPresenceCheck(void) {
709 tNFC_STATUS retval = NFC_STATUS_OK;
710 tRW_DATA evt_data;
711 tRW_CB* p_rw_cb = &rw_cb;
712
713 DLOG_IF(INFO, nfc_debug_enabled) << __func__;
714
715 /* If RW_SelectTagType was not called (no conn_callback) return failure */
716 if (!p_rw_cb->p_cback) {
717 retval = NFC_STATUS_FAILED;
718 }
719 /* If we are not activated, then RW_T1T_PRESENCE_CHECK_EVT status=FAIL */
720 else if (p_rw_cb->tcb.t1t.state == RW_T1T_STATE_NOT_ACTIVATED) {
721 evt_data.status = NFC_STATUS_FAILED;
722 (*p_rw_cb->p_cback)(RW_T1T_PRESENCE_CHECK_EVT, &evt_data);
723 }
724 /* If command is pending, assume tag is still present */
725 else if (p_rw_cb->tcb.t1t.state != RW_T1T_STATE_IDLE) {
726 evt_data.status = NFC_STATUS_OK;
727 (*p_rw_cb->p_cback)(RW_T1T_PRESENCE_CHECK_EVT, &evt_data);
728 } else {
729 /* IDLE state: send a RID command to the tag to see if it responds */
730 retval = rw_t1t_send_static_cmd(T1T_CMD_RID, 0, 0);
731 if (retval == NFC_STATUS_OK) {
732 p_rw_cb->tcb.t1t.state = RW_T1T_STATE_CHECK_PRESENCE;
733 }
734 }
735
736 return (retval);
737 }
738
739 /*****************************************************************************
740 **
741 ** Function RW_T1tRid
742 **
743 ** Description
744 ** This function sends a RID command for Reader/Writer mode.
745 **
746 ** Returns
747 ** NFC_STATUS_OK, if raw data frame sent
748 ** NFC_STATUS_NO_BUFFERS: unable to allocate a buffer for this operation
749 ** NFC_STATUS_FAILED: other error
750 **
751 *****************************************************************************/
RW_T1tRid(void)752 tNFC_STATUS RW_T1tRid(void) {
753 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
754 tNFC_STATUS status = NFC_STATUS_FAILED;
755
756 DLOG_IF(INFO, nfc_debug_enabled) << __func__;
757
758 if (p_t1t->state != RW_T1T_STATE_IDLE) {
759 LOG(WARNING) << StringPrintf("RW_T1tRid - Busy - State: %u", p_t1t->state);
760 return (NFC_STATUS_BUSY);
761 }
762
763 /* send a RID command */
764 status = rw_t1t_send_static_cmd(T1T_CMD_RID, 0, 0);
765 if (status == NFC_STATUS_OK) {
766 p_t1t->state = RW_T1T_STATE_READ;
767 }
768
769 return (status);
770 }
771
772 /*******************************************************************************
773 **
774 ** Function RW_T1tReadAll
775 **
776 ** Description This function sends a RALL command for Reader/Writer mode.
777 **
778 ** Returns tNFC_STATUS
779 **
780 *******************************************************************************/
RW_T1tReadAll(void)781 tNFC_STATUS RW_T1tReadAll(void) {
782 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
783 tNFC_STATUS status = NFC_STATUS_FAILED;
784
785 DLOG_IF(INFO, nfc_debug_enabled) << __func__;
786
787 if (p_t1t->state != RW_T1T_STATE_IDLE) {
788 LOG(WARNING) << StringPrintf("RW_T1tReadAll - Busy - State: %u",
789 p_t1t->state);
790 return (NFC_STATUS_BUSY);
791 }
792
793 /* send RALL command */
794 status = rw_t1t_send_static_cmd(T1T_CMD_RALL, 0, 0);
795 if (status == NFC_STATUS_OK) {
796 p_t1t->state = RW_T1T_STATE_READ;
797 }
798
799 return status;
800 }
801
802 /*******************************************************************************
803 **
804 ** Function RW_T1tRead
805 **
806 ** Description This function sends a READ command for Reader/Writer mode.
807 **
808 ** Returns tNFC_STATUS
809 **
810 *******************************************************************************/
RW_T1tRead(uint8_t block,uint8_t byte)811 tNFC_STATUS RW_T1tRead(uint8_t block, uint8_t byte) {
812 tNFC_STATUS status = NFC_STATUS_FAILED;
813 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
814 uint8_t addr;
815
816 if (p_t1t->state != RW_T1T_STATE_IDLE) {
817 LOG(WARNING) << StringPrintf("RW_T1tRead - Busy - State: %u", p_t1t->state);
818 return (NFC_STATUS_BUSY);
819 }
820
821 /* send READ command */
822 RW_T1T_BLD_ADD((addr), (block), (byte));
823 status = rw_t1t_send_static_cmd(T1T_CMD_READ, addr, 0);
824 if (status == NFC_STATUS_OK) {
825 p_t1t->state = RW_T1T_STATE_READ;
826 }
827 return status;
828 }
829
830 /*******************************************************************************
831 **
832 ** Function RW_T1tWriteErase
833 **
834 ** Description This function sends a WRITE-E command for Reader/Writer
835 ** mode.
836 **
837 ** Returns tNFC_STATUS
838 **
839 *******************************************************************************/
RW_T1tWriteErase(uint8_t block,uint8_t byte,uint8_t new_byte)840 tNFC_STATUS RW_T1tWriteErase(uint8_t block, uint8_t byte, uint8_t new_byte) {
841 tNFC_STATUS status = NFC_STATUS_FAILED;
842 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
843 uint8_t addr;
844
845 if (p_t1t->state != RW_T1T_STATE_IDLE) {
846 LOG(WARNING) << StringPrintf("RW_T1tWriteErase - Busy - State: %u",
847 p_t1t->state);
848 return (NFC_STATUS_BUSY);
849 }
850 if ((p_t1t->tag_attribute == RW_T1_TAG_ATTRB_READ_ONLY) &&
851 (block != T1T_CC_BLOCK) && (byte != T1T_CC_RWA_OFFSET)) {
852 LOG(ERROR) << StringPrintf("RW_T1tWriteErase - Tag is in Read only state");
853 return (NFC_STATUS_REFUSED);
854 }
855 if ((block >= T1T_STATIC_BLOCKS) || (byte >= T1T_BLOCK_SIZE)) {
856 LOG(ERROR) << StringPrintf("RW_T1tWriteErase - Invalid Block/byte: %u / %u",
857 block, byte);
858 return (NFC_STATUS_REFUSED);
859 }
860 if ((block == T1T_UID_BLOCK) || (block == T1T_RES_BLOCK)) {
861 LOG(WARNING) << StringPrintf(
862 "RW_T1tWriteErase - Cannot write to Locked block: %u", block);
863 return (NFC_STATUS_REFUSED);
864 }
865 /* send WRITE-E command */
866 RW_T1T_BLD_ADD((addr), (block), (byte));
867 status = rw_t1t_send_static_cmd(T1T_CMD_WRITE_E, addr, new_byte);
868 if (status == NFC_STATUS_OK) {
869 p_t1t->state = RW_T1T_STATE_WRITE;
870 if (block < T1T_BLOCKS_PER_SEGMENT) {
871 p_t1t->b_update = false;
872 p_t1t->b_rseg = false;
873 }
874 }
875 return status;
876 }
877
878 /*******************************************************************************
879 **
880 ** Function RW_T1tWriteNoErase
881 **
882 ** Description This function sends a WRITE-NE command for Reader/Writer
883 ** mode.
884 **
885 ** Returns tNFC_STATUS
886 **
887 *******************************************************************************/
RW_T1tWriteNoErase(uint8_t block,uint8_t byte,uint8_t new_byte)888 tNFC_STATUS RW_T1tWriteNoErase(uint8_t block, uint8_t byte, uint8_t new_byte) {
889 tNFC_STATUS status = NFC_STATUS_FAILED;
890 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
891 uint8_t addr;
892
893 if (p_t1t->state != RW_T1T_STATE_IDLE) {
894 LOG(WARNING) << StringPrintf("RW_T1tWriteNoErase - Busy - State: %u",
895 p_t1t->state);
896 return (NFC_STATUS_BUSY);
897 }
898 if ((p_t1t->tag_attribute == RW_T1_TAG_ATTRB_READ_ONLY) &&
899 (block != T1T_CC_BLOCK) && (byte != T1T_CC_RWA_OFFSET)) {
900 LOG(ERROR) << StringPrintf("RW_T1tWriteErase - Tag is in Read only state");
901 return (NFC_STATUS_REFUSED);
902 }
903 if ((block >= T1T_STATIC_BLOCKS) || (byte >= T1T_BLOCK_SIZE)) {
904 LOG(ERROR) << StringPrintf("RW_T1tWriteErase - Invalid Block/byte: %u / %u",
905 block, byte);
906 return (NFC_STATUS_REFUSED);
907 }
908 if ((block == T1T_UID_BLOCK) || (block == T1T_RES_BLOCK)) {
909 LOG(WARNING) << StringPrintf(
910 "RW_T1tWriteNoErase - Cannot write to Locked block: %u", block);
911 return (NFC_STATUS_REFUSED);
912 }
913 /* send WRITE-NE command */
914 RW_T1T_BLD_ADD((addr), (block), (byte));
915 status = rw_t1t_send_static_cmd(T1T_CMD_WRITE_NE, addr, new_byte);
916 if (status == NFC_STATUS_OK) {
917 p_t1t->state = RW_T1T_STATE_WRITE;
918 if (block < T1T_BLOCKS_PER_SEGMENT) {
919 p_t1t->b_update = false;
920 p_t1t->b_rseg = false;
921 }
922 }
923 return status;
924 }
925
926 /*******************************************************************************
927 **
928 ** Function RW_T1tReadSeg
929 **
930 ** Description This function sends a RSEG command for Reader/Writer mode.
931 **
932 ** Returns tNFC_STATUS
933 **
934 *******************************************************************************/
RW_T1tReadSeg(uint8_t segment)935 tNFC_STATUS RW_T1tReadSeg(uint8_t segment) {
936 tNFC_STATUS status = NFC_STATUS_FAILED;
937 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
938 uint8_t adds;
939
940 if (p_t1t->state != RW_T1T_STATE_IDLE) {
941 LOG(WARNING) << StringPrintf("RW_T1tReadSeg - Busy - State: %u",
942 p_t1t->state);
943 return (NFC_STATUS_BUSY);
944 }
945 if (segment >= T1T_MAX_SEGMENTS) {
946 LOG(ERROR) << StringPrintf("RW_T1tReadSeg - Invalid Segment: %u", segment);
947 return (NFC_STATUS_REFUSED);
948 }
949 if (rw_cb.tcb.t1t.hr[0] != T1T_STATIC_HR0) {
950 /* send RSEG command */
951 RW_T1T_BLD_ADDS((adds), (segment));
952 status = rw_t1t_send_dyn_cmd(T1T_CMD_RSEG, adds, NULL);
953 if (status == NFC_STATUS_OK) {
954 p_t1t->state = RW_T1T_STATE_READ;
955 }
956 }
957 return status;
958 }
959
960 /*******************************************************************************
961 **
962 ** Function RW_T1tRead8
963 **
964 ** Description This function sends a READ8 command for Reader/Writer mode.
965 **
966 ** Returns tNFC_STATUS
967 **
968 *******************************************************************************/
RW_T1tRead8(uint8_t block)969 tNFC_STATUS RW_T1tRead8(uint8_t block) {
970 tNFC_STATUS status = NFC_STATUS_FAILED;
971 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
972
973 if (p_t1t->state != RW_T1T_STATE_IDLE) {
974 LOG(WARNING) << StringPrintf("RW_T1tRead8 - Busy - State: %u",
975 p_t1t->state);
976 return (NFC_STATUS_BUSY);
977 }
978
979 if (rw_cb.tcb.t1t.hr[0] != T1T_STATIC_HR0 ||
980 rw_cb.tcb.t1t.hr[1] >= RW_T1T_HR1_MIN) {
981 /* send READ8 command */
982 status = rw_t1t_send_dyn_cmd(T1T_CMD_READ8, block, NULL);
983 if (status == NFC_STATUS_OK) {
984 p_t1t->state = RW_T1T_STATE_READ;
985 }
986 }
987 return status;
988 }
989
990 /*******************************************************************************
991 **
992 ** Function RW_T1tWriteErase8
993 **
994 ** Description This function sends a WRITE-E8 command for Reader/Writer
995 ** mode.
996 **
997 ** Returns tNFC_STATUS
998 **
999 *******************************************************************************/
RW_T1tWriteErase8(uint8_t block,uint8_t * p_new_dat)1000 tNFC_STATUS RW_T1tWriteErase8(uint8_t block, uint8_t* p_new_dat) {
1001 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
1002 tNFC_STATUS status = NFC_STATUS_FAILED;
1003
1004 if (p_t1t->state != RW_T1T_STATE_IDLE) {
1005 LOG(WARNING) << StringPrintf("RW_T1tWriteErase8 - Busy - State: %u",
1006 p_t1t->state);
1007 return (NFC_STATUS_BUSY);
1008 }
1009
1010 if ((p_t1t->tag_attribute == RW_T1_TAG_ATTRB_READ_ONLY) &&
1011 (block != T1T_CC_BLOCK)) {
1012 LOG(ERROR) << StringPrintf("RW_T1tWriteErase8 - Tag is in Read only state");
1013 return (NFC_STATUS_REFUSED);
1014 }
1015
1016 if ((block == T1T_UID_BLOCK) || (block == T1T_RES_BLOCK)) {
1017 LOG(WARNING) << StringPrintf(
1018 "RW_T1tWriteErase8 - Cannot write to Locked block: %u", block);
1019 return (NFC_STATUS_REFUSED);
1020 }
1021
1022 if (rw_cb.tcb.t1t.hr[0] != T1T_STATIC_HR0 ||
1023 rw_cb.tcb.t1t.hr[1] >= RW_T1T_HR1_MIN) {
1024 /* send WRITE-E8 command */
1025 status = rw_t1t_send_dyn_cmd(T1T_CMD_WRITE_E8, block, p_new_dat);
1026 if (status == NFC_STATUS_OK) {
1027 p_t1t->state = RW_T1T_STATE_WRITE;
1028 if (block < T1T_BLOCKS_PER_SEGMENT) {
1029 p_t1t->b_update = false;
1030 p_t1t->b_rseg = false;
1031 }
1032 }
1033 }
1034 return status;
1035 }
1036
1037 /*******************************************************************************
1038 **
1039 ** Function RW_T1tWriteNoErase8
1040 **
1041 ** Description This function sends a WRITE-NE8 command for Reader/Writer
1042 ** mode.
1043 **
1044 ** Returns tNFC_STATUS
1045 **
1046 *******************************************************************************/
RW_T1tWriteNoErase8(uint8_t block,uint8_t * p_new_dat)1047 tNFC_STATUS RW_T1tWriteNoErase8(uint8_t block, uint8_t* p_new_dat) {
1048 tNFC_STATUS status = NFC_STATUS_FAILED;
1049 tRW_T1T_CB* p_t1t = &rw_cb.tcb.t1t;
1050
1051 if (p_t1t->state != RW_T1T_STATE_IDLE) {
1052 LOG(WARNING) << StringPrintf("RW_T1tWriteNoErase8 - Busy - State: %u",
1053 p_t1t->state);
1054 return (NFC_STATUS_BUSY);
1055 }
1056
1057 if ((p_t1t->tag_attribute == RW_T1_TAG_ATTRB_READ_ONLY) &&
1058 (block != T1T_CC_BLOCK)) {
1059 LOG(ERROR) << StringPrintf(
1060 "RW_T1tWriteNoErase8 - Tag is in Read only state");
1061 return (NFC_STATUS_REFUSED);
1062 }
1063
1064 if ((block == T1T_UID_BLOCK) || (block == T1T_RES_BLOCK)) {
1065 LOG(WARNING) << StringPrintf(
1066 "RW_T1tWriteNoErase8 - Cannot write to Locked block: %u", block);
1067 return (NFC_STATUS_REFUSED);
1068 }
1069
1070 if (rw_cb.tcb.t1t.hr[0] != T1T_STATIC_HR0 ||
1071 rw_cb.tcb.t1t.hr[1] >= RW_T1T_HR1_MIN) {
1072 /* send WRITE-NE command */
1073 status = rw_t1t_send_dyn_cmd(T1T_CMD_WRITE_NE8, block, p_new_dat);
1074 if (status == NFC_STATUS_OK) {
1075 p_t1t->state = RW_T1T_STATE_WRITE;
1076 if (block < T1T_BLOCKS_PER_SEGMENT) {
1077 p_t1t->b_update = false;
1078 p_t1t->b_rseg = false;
1079 }
1080 }
1081 }
1082 return status;
1083 }
1084
1085 /*******************************************************************************
1086 **
1087 ** Function rw_t1t_get_state_name
1088 **
1089 ** Description This function returns the state name.
1090 **
1091 ** NOTE conditionally compiled to save memory.
1092 **
1093 ** Returns pointer to the name
1094 **
1095 *******************************************************************************/
rw_t1t_get_state_name(uint8_t state)1096 static std::string rw_t1t_get_state_name(uint8_t state) {
1097 switch (state) {
1098 case RW_T1T_STATE_IDLE:
1099 return "IDLE";
1100 case RW_T1T_STATE_NOT_ACTIVATED:
1101 return "NOT_ACTIVATED";
1102 case RW_T1T_STATE_READ:
1103 return "APP_READ";
1104 case RW_T1T_STATE_WRITE:
1105 return "APP_WRITE";
1106 case RW_T1T_STATE_TLV_DETECT:
1107 return "TLV_DETECTION";
1108 case RW_T1T_STATE_READ_NDEF:
1109 return "READING_NDEF";
1110 case RW_T1T_STATE_WRITE_NDEF:
1111 return "WRITING_NDEF";
1112 case RW_T1T_STATE_SET_TAG_RO:
1113 return "SET_TAG_RO";
1114 case RW_T1T_STATE_CHECK_PRESENCE:
1115 return "CHECK_PRESENCE";
1116 case RW_T1T_STATE_FORMAT_TAG:
1117 return "FORMAT_TAG";
1118 default:
1119 return "???? UNKNOWN STATE";
1120 }
1121 }
1122