]>
Commit | Line | Data |
---|---|---|
46697e38 BV |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 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 | ||
20 | #include <glib.h> | |
851d5b22 | 21 | #include <libusb.h> |
46697e38 BV |
22 | #include "libsigrok.h" |
23 | #include "libsigrok-internal.h" | |
24 | #include "protocol.h" | |
25 | ||
26 | SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info; | |
27 | static struct sr_dev_driver *di = &lascar_el_usb_driver_info; | |
851d5b22 | 28 | |
a0e0bb41 | 29 | static const uint32_t scanopts[] = { |
1953564a | 30 | SR_CONF_CONN, |
851d5b22 BV |
31 | }; |
32 | ||
f254bc4b | 33 | static const uint32_t devopts[] = { |
1953564a BV |
34 | SR_CONF_THERMOMETER, |
35 | SR_CONF_HYGROMETER, | |
5827f61b BV |
36 | SR_CONF_CONN | SR_CONF_GET, |
37 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET, | |
38 | SR_CONF_DATALOG | SR_CONF_GET | SR_CONF_SET, | |
851d5b22 BV |
39 | }; |
40 | ||
6078d2c9 | 41 | static int init(struct sr_context *sr_ctx) |
46697e38 | 42 | { |
f6beaac5 | 43 | return std_init(sr_ctx, di, LOG_PREFIX); |
46697e38 BV |
44 | } |
45 | ||
6078d2c9 | 46 | static GSList *scan(GSList *options) |
46697e38 BV |
47 | { |
48 | struct drv_context *drvc; | |
851d5b22 BV |
49 | struct sr_dev_inst *sdi; |
50 | struct sr_usb_dev_inst *usb; | |
1987b8d6 | 51 | struct sr_config *src; |
851d5b22 BV |
52 | GSList *usb_devices, *devices, *l; |
53 | const char *conn; | |
46697e38 | 54 | |
4b97c74e | 55 | drvc = di->priv; |
46697e38 | 56 | |
851d5b22 BV |
57 | conn = NULL; |
58 | for (l = options; l; l = l->next) { | |
1987b8d6 BV |
59 | src = l->data; |
60 | switch (src->key) { | |
1953564a | 61 | case SR_CONF_CONN: |
7faf69da | 62 | conn = g_variant_get_string(src->data, NULL); |
851d5b22 BV |
63 | break; |
64 | } | |
65 | } | |
66 | if (!conn) | |
67 | return NULL; | |
68 | ||
69 | devices = NULL; | |
70 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { | |
71 | /* We have a list of sr_usb_dev_inst matching the connection | |
72 | * string. Wrap them in sr_dev_inst and we're done. */ | |
73 | for (l = usb_devices; l; l = l->next) { | |
74 | usb = l->data; | |
75 | if (!(sdi = lascar_scan(usb->bus, usb->address))) { | |
76 | /* Not a Lascar EL-USB. */ | |
77 | g_free(usb); | |
78 | continue; | |
79 | } | |
0f150649 BV |
80 | sdi->inst_type = SR_INST_USB; |
81 | sdi->conn = usb; | |
851d5b22 BV |
82 | drvc->instances = g_slist_append(drvc->instances, sdi); |
83 | devices = g_slist_append(devices, sdi); | |
84 | } | |
85 | g_slist_free(usb_devices); | |
86 | } else | |
87 | g_slist_free_full(usb_devices, g_free); | |
46697e38 BV |
88 | |
89 | return devices; | |
90 | } | |
91 | ||
6078d2c9 | 92 | static GSList *dev_list(void) |
46697e38 | 93 | { |
0e94d524 | 94 | return ((struct drv_context *)(di->priv))->instances; |
46697e38 BV |
95 | } |
96 | ||
6078d2c9 | 97 | static int dev_open(struct sr_dev_inst *sdi) |
46697e38 | 98 | { |
6aa1eb4e | 99 | struct drv_context *drvc; |
0f150649 | 100 | struct sr_usb_dev_inst *usb; |
6aa1eb4e | 101 | int ret; |
46697e38 | 102 | |
6aa1eb4e BV |
103 | if (!(drvc = di->priv)) { |
104 | sr_err("Driver was not initialized."); | |
105 | return SR_ERR; | |
106 | } | |
107 | ||
0f150649 BV |
108 | usb = sdi->conn; |
109 | ||
110 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, usb) != SR_OK) | |
6aa1eb4e BV |
111 | return SR_ERR; |
112 | ||
0f150649 | 113 | if ((ret = libusb_claim_interface(usb->devhdl, LASCAR_INTERFACE))) { |
6aa1eb4e BV |
114 | sr_err("Failed to claim interface: %s.", libusb_error_name(ret)); |
115 | return SR_ERR; | |
116 | } | |
117 | sdi->status = SR_ST_ACTIVE; | |
118 | ||
119 | return ret; | |
46697e38 BV |
120 | } |
121 | ||
6078d2c9 | 122 | static int dev_close(struct sr_dev_inst *sdi) |
46697e38 | 123 | { |
0f150649 | 124 | struct sr_usb_dev_inst *usb; |
6aa1eb4e BV |
125 | |
126 | if (!di->priv) { | |
127 | sr_err("Driver was not initialized."); | |
128 | return SR_ERR; | |
129 | } | |
130 | ||
0f150649 BV |
131 | usb = sdi->conn; |
132 | ||
133 | if (!usb->devhdl) | |
6aa1eb4e BV |
134 | /* Nothing to do. */ |
135 | return SR_OK; | |
136 | ||
0f150649 BV |
137 | libusb_release_interface(usb->devhdl, LASCAR_INTERFACE); |
138 | libusb_close(usb->devhdl); | |
139 | usb->devhdl = NULL; | |
6aa1eb4e BV |
140 | sdi->status = SR_ST_INACTIVE; |
141 | ||
46697e38 BV |
142 | return SR_OK; |
143 | } | |
144 | ||
6078d2c9 | 145 | static int cleanup(void) |
46697e38 | 146 | { |
c9d622a4 | 147 | int ret; |
6aa1eb4e | 148 | struct drv_context *drvc; |
46697e38 | 149 | |
6aa1eb4e BV |
150 | if (!(drvc = di->priv)) |
151 | /* Can get called on an unused driver, doesn't matter. */ | |
152 | return SR_OK; | |
153 | ||
a6630742 BV |
154 | |
155 | ret = std_dev_clear(di, NULL); | |
6aa1eb4e BV |
156 | g_free(drvc); |
157 | di->priv = NULL; | |
46697e38 | 158 | |
c9d622a4 | 159 | return ret; |
46697e38 BV |
160 | } |
161 | ||
584560f1 | 162 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 163 | const struct sr_channel_group *cg) |
361d1511 BV |
164 | { |
165 | struct dev_context *devc; | |
0f150649 | 166 | struct sr_usb_dev_inst *usb; |
361d1511 | 167 | int ret; |
0f150649 | 168 | char str[128]; |
361d1511 | 169 | |
53b4680f | 170 | (void)cg; |
8f996b89 | 171 | |
361d1511 | 172 | devc = sdi->priv; |
584560f1 | 173 | switch (key) { |
0f150649 BV |
174 | case SR_CONF_CONN: |
175 | if (!sdi || !sdi->conn) | |
176 | return SR_ERR_ARG; | |
177 | usb = sdi->conn; | |
178 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
179 | *data = g_variant_new_string(str); | |
180 | break; | |
361d1511 BV |
181 | case SR_CONF_DATALOG: |
182 | if (!sdi) | |
183 | return SR_ERR_ARG; | |
184 | if ((ret = lascar_is_logging(sdi)) == -1) | |
185 | return SR_ERR; | |
7faf69da | 186 | *data = g_variant_new_boolean(ret ? TRUE : FALSE); |
361d1511 BV |
187 | break; |
188 | case SR_CONF_LIMIT_SAMPLES: | |
7faf69da | 189 | *data = g_variant_new_uint64(devc->limit_samples); |
361d1511 BV |
190 | break; |
191 | default: | |
bd6fbf62 | 192 | return SR_ERR_NA; |
361d1511 BV |
193 | } |
194 | ||
195 | return SR_OK; | |
196 | } | |
197 | ||
584560f1 | 198 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 199 | const struct sr_channel_group *cg) |
46697e38 | 200 | { |
6aa1eb4e | 201 | struct dev_context *devc; |
46697e38 BV |
202 | int ret; |
203 | ||
53b4680f | 204 | (void)cg; |
8f996b89 | 205 | |
e73ffd42 BV |
206 | if (sdi->status != SR_ST_ACTIVE) |
207 | return SR_ERR_DEV_CLOSED; | |
208 | ||
6aa1eb4e BV |
209 | if (!di->priv) { |
210 | sr_err("Driver was not initialized."); | |
211 | return SR_ERR; | |
212 | } | |
46697e38 | 213 | |
6aa1eb4e | 214 | devc = sdi->priv; |
46697e38 | 215 | ret = SR_OK; |
584560f1 | 216 | switch (key) { |
361d1511 | 217 | case SR_CONF_DATALOG: |
7faf69da | 218 | if (g_variant_get_boolean(data)) { |
361d1511 BV |
219 | /* Start logging. */ |
220 | ret = lascar_start_logging(sdi); | |
221 | } else { | |
222 | /* Stop logging. */ | |
223 | ret = lascar_stop_logging(sdi); | |
224 | } | |
225 | break; | |
1953564a | 226 | case SR_CONF_LIMIT_SAMPLES: |
7faf69da | 227 | devc->limit_samples = g_variant_get_uint64(data); |
6aa1eb4e BV |
228 | sr_dbg("Setting sample limit to %" PRIu64 ".", |
229 | devc->limit_samples); | |
230 | break; | |
46697e38 | 231 | default: |
bd6fbf62 | 232 | ret = SR_ERR_NA; |
46697e38 BV |
233 | } |
234 | ||
235 | return ret; | |
236 | } | |
237 | ||
584560f1 | 238 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 239 | const struct sr_channel_group *cg) |
a1c743fc | 240 | { |
a1c743fc | 241 | (void)sdi; |
53b4680f | 242 | (void)cg; |
a1c743fc BV |
243 | |
244 | switch (key) { | |
0d485e30 | 245 | case SR_CONF_SCAN_OPTIONS: |
584560f1 | 246 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
a0e0bb41 | 247 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); |
0d485e30 | 248 | break; |
9a6517d1 | 249 | case SR_CONF_DEVICE_OPTIONS: |
584560f1 | 250 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 251 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
9a6517d1 | 252 | break; |
a1c743fc | 253 | default: |
bd6fbf62 | 254 | return SR_ERR_NA; |
a1c743fc BV |
255 | } |
256 | ||
257 | return SR_OK; | |
258 | } | |
259 | ||
6aa1eb4e BV |
260 | static void mark_xfer(struct libusb_transfer *xfer) |
261 | { | |
262 | ||
263 | if (xfer->status == LIBUSB_TRANSFER_COMPLETED) | |
264 | xfer->user_data = GINT_TO_POINTER(1); | |
265 | else | |
266 | xfer->user_data = GINT_TO_POINTER(-1); | |
267 | ||
268 | } | |
269 | ||
270 | /* The Lascar software, in its infinite ignorance, reads a set of four | |
271 | * bytes from the device config struct and interprets it as a float. | |
272 | * That only works because they only use windows, and only on x86. However | |
273 | * we may be running on any architecture, any operating system. So we have | |
274 | * to convert these four bytes as the Lascar software would on windows/x86, | |
275 | * to the local representation of a float. | |
276 | * The source format is little-endian, with IEEE 754-2008 BINARY32 encoding. */ | |
277 | static float binary32_le_to_float(unsigned char *buf) | |
278 | { | |
279 | GFloatIEEE754 f; | |
280 | ||
281 | f.v_float = 0; | |
282 | f.mpn.sign = (buf[3] & 0x80) ? 1 : 0; | |
283 | f.mpn.biased_exponent = (buf[3] << 1) | (buf[2] >> 7); | |
284 | f.mpn.mantissa = buf[0] | (buf[1] << 8) | ((buf[2] & 0x7f) << 16); | |
285 | ||
286 | return f.v_float; | |
287 | } | |
288 | ||
289 | static int lascar_proc_config(const struct sr_dev_inst *sdi) | |
290 | { | |
291 | struct dev_context *devc; | |
0f150649 | 292 | struct sr_usb_dev_inst *usb; |
361d1511 | 293 | int dummy, ret; |
6aa1eb4e BV |
294 | |
295 | devc = sdi->priv; | |
0f150649 BV |
296 | usb = sdi->conn; |
297 | ||
298 | if (lascar_get_config(usb->devhdl, devc->config, &dummy) != SR_OK) | |
6aa1eb4e BV |
299 | return SR_ERR; |
300 | ||
301 | ret = SR_OK; | |
302 | switch (devc->profile->logformat) { | |
303 | case LOG_TEMP_RH: | |
6787f404 BV |
304 | devc->sample_size = 2; |
305 | devc->temp_unit = devc->config[0x2e] | (devc->config[0x2f] << 8); | |
306 | if (devc->temp_unit != 0 && devc->temp_unit != 1) { | |
307 | sr_dbg("invalid temperature unit %d", devc->temp_unit); | |
308 | /* Default to Celcius, we're all adults here. */ | |
309 | devc->temp_unit = 0; | |
310 | } else | |
311 | sr_dbg("temperature unit is %s", devc->temp_unit | |
312 | ? "Fahrenheit" : "Celcius"); | |
6aa1eb4e BV |
313 | break; |
314 | case LOG_CO: | |
315 | devc->sample_size = 2; | |
6787f404 BV |
316 | devc->co_high = binary32_le_to_float(devc->config + 0x24); |
317 | devc->co_low = binary32_le_to_float(devc->config + 0x28); | |
6aa1eb4e BV |
318 | sr_dbg("EL-USB-CO calibration high %f low %f", devc->co_high, |
319 | devc->co_low); | |
320 | break; | |
321 | default: | |
322 | ret = SR_ERR_ARG; | |
323 | } | |
324 | devc->logged_samples = devc->config[0x1e] | (devc->config[0x1f] << 8); | |
325 | sr_dbg("device log contains %d samples.", devc->logged_samples); | |
326 | ||
327 | return ret; | |
328 | } | |
329 | ||
6078d2c9 | 330 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
46697e38 | 331 | { |
6aa1eb4e | 332 | struct sr_datafeed_packet packet; |
8e77bc20 BV |
333 | struct sr_datafeed_meta meta; |
334 | struct sr_config *src; | |
6aa1eb4e | 335 | struct dev_context *devc; |
8e77bc20 | 336 | struct drv_context *drvc; |
0f150649 | 337 | struct sr_usb_dev_inst *usb; |
6aa1eb4e | 338 | struct libusb_transfer *xfer_in, *xfer_out; |
6aa1eb4e | 339 | struct timeval tv; |
8e77bc20 | 340 | uint64_t interval; |
6c60facc | 341 | int ret; |
6aa1eb4e BV |
342 | unsigned char cmd[3], resp[4], *buf; |
343 | ||
e73ffd42 BV |
344 | if (sdi->status != SR_ST_ACTIVE) |
345 | return SR_ERR_DEV_CLOSED; | |
346 | ||
6aa1eb4e BV |
347 | if (!di->priv) { |
348 | sr_err("Driver was not initialized."); | |
349 | return SR_ERR; | |
350 | } | |
351 | ||
8e77bc20 | 352 | drvc = di->priv; |
6aa1eb4e | 353 | devc = sdi->priv; |
0f150649 | 354 | usb = sdi->conn; |
6aa1eb4e BV |
355 | devc->cb_data = cb_data; |
356 | ||
357 | if (lascar_proc_config(sdi) != SR_OK) | |
358 | return SR_ERR; | |
359 | ||
360 | sr_dbg("Starting log retrieval."); | |
361 | ||
362 | /* Send header packet to the session bus. */ | |
29a27196 | 363 | std_session_send_df_header(cb_data, LOG_PREFIX); |
6aa1eb4e | 364 | |
8e77bc20 BV |
365 | interval = (devc->config[0x1c] | (devc->config[0x1d] << 8)) * 1000; |
366 | packet.type = SR_DF_META; | |
367 | packet.payload = &meta; | |
7faf69da | 368 | src = sr_config_new(SR_CONF_SAMPLE_INTERVAL, g_variant_new_uint64(interval)); |
8e77bc20 BV |
369 | meta.config = g_slist_append(NULL, src); |
370 | sr_session_send(devc->cb_data, &packet); | |
371 | g_free(src); | |
372 | ||
6aa1eb4e BV |
373 | if (devc->logged_samples == 0) { |
374 | /* This ensures the frontend knows the session is done. */ | |
375 | packet.type = SR_DF_END; | |
376 | sr_session_send(devc->cb_data, &packet); | |
377 | return SR_OK; | |
378 | } | |
379 | ||
380 | if (!(xfer_in = libusb_alloc_transfer(0)) || | |
381 | !(xfer_out = libusb_alloc_transfer(0))) | |
382 | return SR_ERR; | |
383 | ||
0f150649 | 384 | libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, |
6aa1eb4e | 385 | 0x00, 0xffff, 0x00, NULL, 0, 50); |
0f150649 | 386 | libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, |
6aa1eb4e | 387 | 0x02, 0x0002, 0x00, NULL, 0, 50); |
0f150649 | 388 | libusb_control_transfer(usb->devhdl, LIBUSB_REQUEST_TYPE_VENDOR, |
6aa1eb4e BV |
389 | 0x02, 0x0001, 0x00, NULL, 0, 50); |
390 | ||
391 | ||
392 | /* Flush input. The F321 requires this. */ | |
0f150649 | 393 | while (libusb_bulk_transfer(usb->devhdl, LASCAR_EP_IN, resp, |
6aa1eb4e BV |
394 | 256, &ret, 5) == 0 && ret > 0) |
395 | ; | |
396 | ||
0f150649 | 397 | libusb_fill_bulk_transfer(xfer_in, usb->devhdl, LASCAR_EP_IN, |
6aa1eb4e BV |
398 | resp, sizeof(resp), mark_xfer, 0, 10000); |
399 | if (libusb_submit_transfer(xfer_in) != 0) { | |
400 | libusb_free_transfer(xfer_in); | |
401 | libusb_free_transfer(xfer_out); | |
402 | return SR_ERR; | |
403 | } | |
404 | ||
405 | cmd[0] = 0x03; | |
406 | cmd[1] = 0xff; | |
407 | cmd[2] = 0xff; | |
0f150649 | 408 | libusb_fill_bulk_transfer(xfer_out, usb->devhdl, LASCAR_EP_OUT, |
6aa1eb4e BV |
409 | cmd, 3, mark_xfer, 0, 100); |
410 | if (libusb_submit_transfer(xfer_out) != 0) { | |
411 | libusb_free_transfer(xfer_in); | |
412 | libusb_free_transfer(xfer_out); | |
413 | return SR_ERR; | |
414 | } | |
415 | ||
416 | tv.tv_sec = 0; | |
417 | tv.tv_usec = 0; | |
418 | while (!xfer_in->user_data || !xfer_out->user_data) { | |
419 | g_usleep(5000); | |
420 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
421 | } | |
422 | if (xfer_in->user_data != GINT_TO_POINTER(1) || | |
423 | xfer_in->user_data != GINT_TO_POINTER(1)) { | |
424 | sr_dbg("no response to log transfer request"); | |
425 | libusb_free_transfer(xfer_in); | |
426 | libusb_free_transfer(xfer_out); | |
427 | return SR_ERR; | |
428 | } | |
429 | if (xfer_in->actual_length != 3 || xfer_in->buffer[0] != 2) { | |
430 | sr_dbg("invalid response to log transfer request"); | |
431 | libusb_free_transfer(xfer_in); | |
432 | libusb_free_transfer(xfer_out); | |
433 | return SR_ERR; | |
434 | } | |
435 | devc->log_size = xfer_in->buffer[1] + (xfer_in->buffer[2] << 8); | |
436 | libusb_free_transfer(xfer_out); | |
437 | ||
102f1239 BV |
438 | usb_source_add(sdi->session, drvc->sr_ctx, 100, |
439 | lascar_el_usb_handle_events, (void *)sdi); | |
6aa1eb4e BV |
440 | |
441 | buf = g_try_malloc(4096); | |
0f150649 | 442 | libusb_fill_bulk_transfer(xfer_in, usb->devhdl, LASCAR_EP_IN, |
6aa1eb4e BV |
443 | buf, 4096, lascar_el_usb_receive_transfer, cb_data, 100); |
444 | if ((ret = libusb_submit_transfer(xfer_in) != 0)) { | |
445 | sr_err("Unable to submit transfer: %s.", libusb_error_name(ret)); | |
446 | libusb_free_transfer(xfer_in); | |
447 | g_free(buf); | |
448 | return SR_ERR; | |
449 | } | |
46697e38 BV |
450 | |
451 | return SR_OK; | |
452 | } | |
453 | ||
6078d2c9 | 454 | SR_PRIV int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
46697e38 BV |
455 | { |
456 | (void)cb_data; | |
457 | ||
6aa1eb4e BV |
458 | if (!di->priv) { |
459 | sr_err("Driver was not initialized."); | |
460 | return SR_ERR; | |
461 | } | |
462 | ||
46697e38 BV |
463 | if (sdi->status != SR_ST_ACTIVE) { |
464 | sr_err("Device inactive, can't stop acquisition."); | |
465 | return SR_ERR; | |
466 | } | |
467 | ||
6aa1eb4e BV |
468 | sdi->status = SR_ST_STOPPING; |
469 | /* TODO: free ongoing transfers? */ | |
46697e38 BV |
470 | |
471 | return SR_OK; | |
472 | } | |
473 | ||
474 | SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info = { | |
475 | .name = "lascar-el-usb", | |
476 | .longname = "Lascar EL-USB", | |
477 | .api_version = 1, | |
6078d2c9 UH |
478 | .init = init, |
479 | .cleanup = cleanup, | |
480 | .scan = scan, | |
481 | .dev_list = dev_list, | |
a6630742 | 482 | .dev_clear = NULL, |
361d1511 | 483 | .config_get = config_get, |
035a1078 | 484 | .config_set = config_set, |
a1c743fc | 485 | .config_list = config_list, |
6078d2c9 UH |
486 | .dev_open = dev_open, |
487 | .dev_close = dev_close, | |
488 | .dev_acquisition_start = dev_acquisition_start, | |
489 | .dev_acquisition_stop = dev_acquisition_stop, | |
46697e38 BV |
490 | .priv = NULL, |
491 | }; |