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0acdd793 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
6ec6c43b | 20 | #include <config.h> |
6dcb9723 | 21 | #include <string.h> |
0acdd793 BV |
22 | #include "protocol.h" |
23 | ||
6dcb9723 BV |
24 | #define SERIALCOMM "115200/8n1" |
25 | ||
0acdd793 | 26 | SR_PRIV struct sr_dev_driver testo_driver_info; |
695dc859 | 27 | static int dev_acquisition_stop(struct sr_dev_inst *sdi); |
6dcb9723 | 28 | |
584560f1 | 29 | static const uint32_t scanopts[] = { |
6dcb9723 BV |
30 | SR_CONF_CONN, |
31 | }; | |
32 | ||
584560f1 | 33 | static const uint32_t devopts[] = { |
6dcb9723 | 34 | SR_CONF_MULTIMETER, |
6dcb9723 | 35 | SR_CONF_CONTINUOUS, |
5827f61b BV |
36 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, |
37 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, | |
6dcb9723 BV |
38 | }; |
39 | ||
329733d9 UH |
40 | static const uint8_t TESTO_x35_REQUEST[] = { 0x12, 0, 0, 0, 1, 1, 0x55, 0xd1, 0xb7 }; |
41 | ||
42 | static const struct testo_model models[] = { | |
6dcb9723 BV |
43 | { "435", 9, TESTO_x35_REQUEST }, |
44 | }; | |
0acdd793 | 45 | |
4f840ce9 | 46 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
0acdd793 BV |
47 | { |
48 | return std_init(sr_ctx, di, LOG_PREFIX); | |
49 | } | |
50 | ||
4f840ce9 | 51 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
0acdd793 BV |
52 | { |
53 | struct drv_context *drvc; | |
6dcb9723 BV |
54 | struct dev_context *devc; |
55 | struct sr_config *src; | |
56 | struct sr_dev_inst *sdi; | |
57 | struct sr_usb_dev_inst *usb; | |
58 | struct libusb_device_descriptor des; | |
59 | libusb_device **devlist; | |
60 | struct libusb_device_handle *hdl; | |
61 | GSList *conn_devices, *devices, *l; | |
bde9fbd1 | 62 | int ret, i; |
6dcb9723 | 63 | const char *str; |
bde9fbd1 | 64 | char manufacturer[64], product[64], connection_id[64]; |
0acdd793 BV |
65 | |
66 | devices = NULL; | |
41812aca | 67 | drvc = di->context; |
0acdd793 BV |
68 | drvc->instances = NULL; |
69 | ||
6dcb9723 BV |
70 | conn_devices = NULL; |
71 | for (l = options; l; l = l->next) { | |
72 | src = l->data; | |
73 | if (src->key != SR_CONF_CONN) | |
74 | continue; | |
75 | str = g_variant_get_string(src->data, NULL); | |
76 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, str); | |
77 | } | |
78 | ||
79 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
80 | for (i = 0; devlist[i]; i++) { | |
81 | if (conn_devices) { | |
82 | usb = NULL; | |
83 | for (l = conn_devices; l; l = l->next) { | |
84 | usb = l->data; | |
85 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
86 | && usb->address == libusb_get_device_address(devlist[i])) | |
87 | break; | |
88 | } | |
89 | if (!l) | |
90 | /* This device matched none of the ones that | |
91 | * matched the conn specification. */ | |
92 | continue; | |
93 | } | |
94 | ||
2a8f2d41 | 95 | libusb_get_device_descriptor(devlist[i], &des); |
6dcb9723 BV |
96 | |
97 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
98 | continue; | |
99 | ||
100 | manufacturer[0] = product[0] = '\0'; | |
101 | if (des.iManufacturer && (ret = libusb_get_string_descriptor_ascii( | |
102 | hdl, des.iManufacturer, (unsigned char *) manufacturer, | |
103 | sizeof(manufacturer))) < 0) { | |
104 | sr_warn("Failed to get manufacturer string descriptor: %s.", | |
105 | libusb_error_name(ret)); | |
106 | } | |
107 | if (des.iProduct && (ret = libusb_get_string_descriptor_ascii( | |
108 | hdl, des.iProduct, (unsigned char *) product, | |
109 | sizeof(product))) < 0) { | |
110 | sr_warn("Failed to get product string descriptor: %s.", | |
111 | libusb_error_name(ret)); | |
112 | } | |
113 | libusb_close(hdl); | |
114 | ||
115 | if (strncmp(manufacturer, "testo", 5)) | |
116 | continue; | |
117 | ||
bde9fbd1 SA |
118 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
119 | ||
6dcb9723 BV |
120 | /* Hardcode the 435 for now.*/ |
121 | if (strcmp(product, "testo 435/635/735")) | |
122 | continue; | |
123 | ||
aac29cc1 | 124 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
125 | sdi->status = SR_ST_INACTIVE; |
126 | sdi->vendor = g_strdup("Testo"); | |
127 | sdi->model = g_strdup("435/635/735"); | |
6dcb9723 BV |
128 | sdi->driver = di; |
129 | sdi->inst_type = SR_INST_USB; | |
130 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]), | |
131 | libusb_get_device_address(devlist[i]), NULL); | |
bde9fbd1 | 132 | sdi->connection_id = g_strdup(connection_id); |
6dcb9723 BV |
133 | devc = g_malloc(sizeof(struct dev_context)); |
134 | devc->model = &models[0]; | |
135 | devc->limit_msec = 0; | |
136 | devc->limit_samples = 0; | |
137 | sdi->priv = devc; | |
138 | if (testo_probe_channels(sdi) != SR_OK) | |
139 | continue; | |
140 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
141 | devices = g_slist_append(devices, sdi); | |
142 | } | |
143 | libusb_free_device_list(devlist, 1); | |
144 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
0acdd793 BV |
145 | |
146 | return devices; | |
147 | } | |
148 | ||
0acdd793 BV |
149 | static int dev_open(struct sr_dev_inst *sdi) |
150 | { | |
4f840ce9 | 151 | struct sr_dev_driver *di = sdi->driver; |
41812aca | 152 | struct drv_context *drvc = di->context; |
6dcb9723 BV |
153 | struct sr_usb_dev_inst *usb; |
154 | libusb_device **devlist; | |
155 | int ret, i; | |
bde9fbd1 | 156 | char connection_id[64]; |
6dcb9723 | 157 | |
41812aca | 158 | if (!di->context) { |
6dcb9723 BV |
159 | sr_err("Driver was not initialized."); |
160 | return SR_ERR; | |
161 | } | |
0acdd793 | 162 | |
6dcb9723 BV |
163 | usb = sdi->conn; |
164 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
165 | for (i = 0; devlist[i]; i++) { | |
bde9fbd1 SA |
166 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); |
167 | if (strcmp(sdi->connection_id, connection_id)) | |
6dcb9723 BV |
168 | continue; |
169 | if ((ret = libusb_open(devlist[i], &usb->devhdl))) { | |
170 | sr_err("Failed to open device: %s.", libusb_error_name(ret)); | |
171 | return SR_ERR; | |
172 | } | |
173 | break; | |
174 | } | |
175 | libusb_free_device_list(devlist, 1); | |
176 | if (!devlist[i]) { | |
177 | sr_err("Device not found."); | |
178 | return SR_ERR; | |
179 | } | |
0acdd793 | 180 | |
88b1d4e5 BV |
181 | if (libusb_has_capability(LIBUSB_CAP_SUPPORTS_DETACH_KERNEL_DRIVER)) { |
182 | if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) { | |
183 | if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) { | |
184 | sr_err("Failed to detach kernel driver: %s.", | |
185 | libusb_error_name(ret)); | |
186 | return SR_ERR; | |
187 | } | |
188 | } | |
189 | } | |
190 | ||
6dcb9723 BV |
191 | if ((ret = libusb_claim_interface(usb->devhdl, 0))) { |
192 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); | |
193 | return SR_ERR; | |
194 | } | |
0acdd793 BV |
195 | sdi->status = SR_ST_ACTIVE; |
196 | ||
197 | return SR_OK; | |
198 | } | |
199 | ||
200 | static int dev_close(struct sr_dev_inst *sdi) | |
201 | { | |
4f840ce9 | 202 | struct sr_dev_driver *di = sdi->driver; |
6dcb9723 BV |
203 | struct sr_usb_dev_inst *usb; |
204 | ||
41812aca | 205 | if (!di->context) { |
6dcb9723 BV |
206 | sr_err("Driver was not initialized."); |
207 | return SR_ERR; | |
208 | } | |
0acdd793 | 209 | |
6dcb9723 BV |
210 | usb = sdi->conn; |
211 | if (!usb->devhdl) | |
212 | /* Nothing to do. */ | |
213 | return SR_OK; | |
0acdd793 | 214 | |
6dcb9723 BV |
215 | libusb_release_interface(usb->devhdl, 0); |
216 | libusb_close(usb->devhdl); | |
217 | usb->devhdl = NULL; | |
0acdd793 BV |
218 | sdi->status = SR_ST_INACTIVE; |
219 | ||
220 | return SR_OK; | |
221 | } | |
222 | ||
584560f1 | 223 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
224 | const struct sr_channel_group *cg) |
225 | { | |
6dcb9723 BV |
226 | struct sr_usb_dev_inst *usb; |
227 | char str[128]; | |
0acdd793 | 228 | |
0acdd793 BV |
229 | (void)cg; |
230 | ||
0acdd793 | 231 | switch (key) { |
6dcb9723 BV |
232 | case SR_CONF_CONN: |
233 | if (!sdi || !sdi->conn) | |
234 | return SR_ERR_ARG; | |
235 | usb = sdi->conn; | |
236 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
237 | *data = g_variant_new_string(str); | |
238 | break; | |
0acdd793 BV |
239 | default: |
240 | return SR_ERR_NA; | |
241 | } | |
242 | ||
6dcb9723 | 243 | return SR_OK; |
0acdd793 BV |
244 | } |
245 | ||
584560f1 | 246 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
247 | const struct sr_channel_group *cg) |
248 | { | |
4f840ce9 | 249 | struct sr_dev_driver *di = sdi->driver; |
6dcb9723 BV |
250 | struct dev_context *devc; |
251 | gint64 now; | |
0acdd793 BV |
252 | int ret; |
253 | ||
0acdd793 BV |
254 | (void)cg; |
255 | ||
256 | if (sdi->status != SR_ST_ACTIVE) | |
257 | return SR_ERR_DEV_CLOSED; | |
258 | ||
41812aca | 259 | if (!di->context) { |
6dcb9723 BV |
260 | sr_err("Driver was not initialized."); |
261 | return SR_ERR; | |
262 | } | |
263 | ||
264 | devc = sdi->priv; | |
0acdd793 BV |
265 | ret = SR_OK; |
266 | switch (key) { | |
6dcb9723 BV |
267 | case SR_CONF_LIMIT_MSEC: |
268 | devc->limit_msec = g_variant_get_uint64(data); | |
269 | now = g_get_monotonic_time() / 1000; | |
270 | devc->end_time = now + devc->limit_msec; | |
6dcb9723 BV |
271 | break; |
272 | case SR_CONF_LIMIT_SAMPLES: | |
273 | devc->limit_samples = g_variant_get_uint64(data); | |
6dcb9723 | 274 | break; |
0acdd793 BV |
275 | default: |
276 | ret = SR_ERR_NA; | |
277 | } | |
278 | ||
279 | return ret; | |
280 | } | |
281 | ||
584560f1 | 282 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
0acdd793 BV |
283 | const struct sr_channel_group *cg) |
284 | { | |
0acdd793 | 285 | (void)sdi; |
0acdd793 BV |
286 | (void)cg; |
287 | ||
0acdd793 | 288 | switch (key) { |
6dcb9723 | 289 | case SR_CONF_SCAN_OPTIONS: |
584560f1 BV |
290 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
291 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
6dcb9723 BV |
292 | break; |
293 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 BV |
294 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
295 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
6dcb9723 | 296 | break; |
0acdd793 BV |
297 | default: |
298 | return SR_ERR_NA; | |
299 | } | |
300 | ||
6dcb9723 | 301 | return SR_OK; |
0acdd793 BV |
302 | } |
303 | ||
6dcb9723 | 304 | static void receive_data(struct sr_dev_inst *sdi, unsigned char *data, int len) |
0acdd793 | 305 | { |
6dcb9723 BV |
306 | struct dev_context *devc; |
307 | int packet_size; | |
87895640 | 308 | uint16_t crc; |
6dcb9723 BV |
309 | |
310 | devc = sdi->priv; | |
311 | ||
312 | if (devc->reply_size + len > MAX_REPLY_SIZE) { | |
313 | /* Something went very wrong. */ | |
314 | sr_dbg("Receive buffer overrun."); | |
315 | devc->reply_size = 0; | |
316 | return; | |
317 | } | |
318 | ||
319 | memcpy(devc->reply + devc->reply_size, data, len); | |
320 | devc->reply_size += len; | |
321 | /* Sixth byte contains the length of the packet. */ | |
87895640 BV |
322 | if (devc->reply_size < 7) |
323 | return; | |
324 | ||
325 | packet_size = 7 + devc->reply[6] * 7 + 2; | |
326 | if (devc->reply_size < packet_size) | |
327 | return; | |
328 | ||
329 | if (!testo_check_packet_prefix(devc->reply, devc->reply_size)) | |
330 | return; | |
331 | ||
332 | crc = crc16_mcrf4xx(0xffff, devc->reply, devc->reply_size - 2); | |
88b1d4e5 | 333 | if (crc == RL16(&devc->reply[devc->reply_size - 2])) { |
87895640 BV |
334 | testo_receive_packet(sdi); |
335 | devc->num_samples++; | |
336 | } else { | |
337 | sr_dbg("Packet has invalid CRC."); | |
6dcb9723 BV |
338 | } |
339 | ||
87895640 BV |
340 | devc->reply_size = 0; |
341 | if (devc->limit_samples && devc->num_samples >= devc->limit_samples) | |
695dc859 | 342 | dev_acquisition_stop(sdi); |
87895640 BV |
343 | else |
344 | testo_request_packet(sdi); | |
345 | ||
6dcb9723 BV |
346 | } |
347 | ||
55462b8b | 348 | SR_PRIV void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer) |
6dcb9723 BV |
349 | { |
350 | struct dev_context *devc; | |
351 | struct sr_dev_inst *sdi; | |
352 | int ret; | |
353 | ||
354 | sdi = transfer->user_data; | |
355 | devc = sdi->priv; | |
356 | if (transfer == devc->out_transfer) | |
357 | /* Just the command acknowledgement. */ | |
358 | return; | |
359 | ||
360 | if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) { | |
361 | /* USB device was unplugged. */ | |
695dc859 | 362 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
363 | } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) { |
364 | /* First two bytes in any transfer are FTDI status bytes. */ | |
365 | if (transfer->actual_length > 2) | |
366 | receive_data(sdi, transfer->buffer + 2, transfer->actual_length - 2); | |
367 | } | |
368 | /* Anything else is either an error or a timeout, which is fine: | |
369 | * we were just going to send another transfer request anyway. */ | |
370 | ||
371 | if (sdi->status == SR_ST_ACTIVE) { | |
372 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
373 | sr_err("Unable to resubmit transfer: %s.", | |
374 | libusb_error_name(ret)); | |
375 | g_free(transfer->buffer); | |
376 | libusb_free_transfer(transfer); | |
695dc859 | 377 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
378 | } |
379 | } else { | |
380 | /* This was the last transfer we're going to receive, so | |
381 | * clean up now. */ | |
382 | g_free(transfer->buffer); | |
383 | libusb_free_transfer(transfer); | |
384 | } | |
385 | } | |
386 | ||
387 | static int handle_events(int fd, int revents, void *cb_data) | |
388 | { | |
4f840ce9 | 389 | struct sr_dev_driver *di; |
6dcb9723 | 390 | struct dev_context *devc; |
4f840ce9 | 391 | struct drv_context *drvc; |
6dcb9723 BV |
392 | struct sr_dev_inst *sdi; |
393 | struct timeval tv; | |
394 | gint64 now; | |
395 | ||
396 | (void)fd; | |
397 | (void)revents; | |
398 | ||
399 | sdi = cb_data; | |
400 | devc = sdi->priv; | |
4f840ce9 | 401 | di = sdi->driver; |
41812aca | 402 | drvc = di->context; |
6dcb9723 BV |
403 | |
404 | if (devc->limit_msec) { | |
405 | now = g_get_monotonic_time() / 1000; | |
406 | if (now > devc->end_time) | |
695dc859 | 407 | dev_acquisition_stop(sdi); |
6dcb9723 BV |
408 | } |
409 | ||
410 | if (sdi->status == SR_ST_STOPPING) { | |
102f1239 | 411 | usb_source_remove(sdi->session, drvc->sr_ctx); |
6dcb9723 | 412 | dev_close(sdi); |
3be42bc2 | 413 | std_session_send_df_end(sdi, LOG_PREFIX); |
6dcb9723 BV |
414 | } |
415 | ||
416 | memset(&tv, 0, sizeof(struct timeval)); | |
417 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
418 | NULL); | |
419 | ||
420 | return TRUE; | |
421 | } | |
422 | ||
695dc859 | 423 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
6dcb9723 | 424 | { |
4f840ce9 | 425 | struct sr_dev_driver *di = sdi->driver; |
6dcb9723 BV |
426 | struct drv_context *drvc; |
427 | struct dev_context *devc; | |
428 | struct sr_usb_dev_inst *usb; | |
429 | struct libusb_transfer *transfer; | |
430 | int ret; | |
431 | unsigned char *buf; | |
0acdd793 | 432 | |
41812aca | 433 | drvc = di->context; |
0acdd793 BV |
434 | if (sdi->status != SR_ST_ACTIVE) |
435 | return SR_ERR_DEV_CLOSED; | |
436 | ||
41812aca | 437 | if (!di->context) { |
6dcb9723 BV |
438 | sr_err("Driver was not initialized."); |
439 | return SR_ERR; | |
440 | } | |
441 | ||
442 | devc = sdi->priv; | |
443 | usb = sdi->conn; | |
6dcb9723 BV |
444 | devc->end_time = 0; |
445 | devc->num_samples = 0; | |
446 | devc->reply_size = 0; | |
447 | ||
695dc859 | 448 | std_session_send_df_header(sdi, LOG_PREFIX); |
6dcb9723 | 449 | |
102f1239 BV |
450 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
451 | handle_events, (void *)sdi); | |
6dcb9723 BV |
452 | |
453 | if (testo_set_serial_params(usb) != SR_OK) | |
454 | return SR_ERR; | |
455 | ||
456 | devc->out_transfer = libusb_alloc_transfer(0); | |
457 | if (testo_request_packet(sdi) != SR_OK) | |
458 | return SR_ERR; | |
459 | ||
a95f142e | 460 | buf = g_malloc(MAX_REPLY_SIZE); |
6dcb9723 BV |
461 | transfer = libusb_alloc_transfer(0); |
462 | libusb_fill_bulk_transfer(transfer, usb->devhdl, EP_IN, buf, | |
463 | MAX_REPLY_SIZE, receive_transfer, (void *)sdi, 100); | |
464 | if ((ret = libusb_submit_transfer(transfer) != 0)) { | |
465 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); | |
466 | libusb_free_transfer(transfer); | |
467 | g_free(buf); | |
468 | return SR_ERR; | |
469 | } | |
470 | devc->reply_size = 0; | |
0acdd793 BV |
471 | |
472 | return SR_OK; | |
473 | } | |
474 | ||
695dc859 | 475 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
0acdd793 | 476 | { |
4f840ce9 | 477 | struct sr_dev_driver *di = sdi->driver; |
0acdd793 | 478 | |
41812aca | 479 | if (!di->context) { |
6dcb9723 BV |
480 | sr_err("Driver was not initialized."); |
481 | return SR_ERR; | |
482 | } | |
483 | ||
0acdd793 BV |
484 | if (sdi->status != SR_ST_ACTIVE) |
485 | return SR_ERR_DEV_CLOSED; | |
486 | ||
6dcb9723 | 487 | sdi->status = SR_ST_STOPPING; |
0acdd793 BV |
488 | |
489 | return SR_OK; | |
490 | } | |
491 | ||
492 | SR_PRIV struct sr_dev_driver testo_driver_info = { | |
493 | .name = "testo", | |
494 | .longname = "Testo", | |
495 | .api_version = 1, | |
496 | .init = init, | |
700d6b64 | 497 | .cleanup = std_cleanup, |
0acdd793 | 498 | .scan = scan, |
c01bf34c | 499 | .dev_list = std_dev_list, |
0acdd793 BV |
500 | .config_get = config_get, |
501 | .config_set = config_set, | |
502 | .config_list = config_list, | |
503 | .dev_open = dev_open, | |
504 | .dev_close = dev_close, | |
505 | .dev_acquisition_start = dev_acquisition_start, | |
506 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 507 | .context = NULL, |
0acdd793 | 508 | }; |