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b908f067 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
b908f067 | 3 | * |
67f890d5 | 4 | * Copyright (C) 2011-2015 Uwe Hermann <uwe@hermann-uwe.de> |
b908f067 UH |
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 2 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 | |
2ea1fdf1 | 17 | * along with this program; if not, see <http://www.gnu.org/licenses/>. |
b908f067 UH |
18 | */ |
19 | ||
6ec6c43b | 20 | #include <config.h> |
45e080b6 | 21 | #include "protocol.h" |
b908f067 | 22 | |
67f890d5 UH |
23 | static const uint32_t scanopts[] = { |
24 | SR_CONF_CONN, | |
25 | }; | |
26 | ||
55fb76b3 UH |
27 | static const uint32_t drvopts[] = { |
28 | SR_CONF_LOGIC_ANALYZER, | |
29 | }; | |
30 | ||
67f890d5 | 31 | static const uint32_t devopts[] = { |
5827f61b BV |
32 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, |
33 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST, | |
67f890d5 | 34 | SR_CONF_CONN | SR_CONF_GET, |
5827f61b BV |
35 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
36 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
1bec72d2 BV |
37 | }; |
38 | ||
aeff7fa2 BV |
39 | static const int32_t trigger_matches[] = { |
40 | SR_TRIGGER_ZERO, | |
41 | SR_TRIGGER_ONE, | |
42 | SR_TRIGGER_RISING, | |
43 | SR_TRIGGER_FALLING, | |
44 | }; | |
45 | ||
3553451f | 46 | static void clear_helper(struct dev_context *devc) |
c4f3ed4b | 47 | { |
97900799 UH |
48 | ftdi_free(devc->ftdic); |
49 | g_free(devc->final_buf); | |
50 | } | |
c4f3ed4b | 51 | |
4f840ce9 | 52 | static int dev_clear(const struct sr_dev_driver *di) |
97900799 | 53 | { |
3553451f | 54 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); |
c4f3ed4b BV |
55 | } |
56 | ||
15a5bfe4 LPC |
57 | static int add_device(int model, struct libusb_device_descriptor *des, |
58 | const char *serial_num, const char *connection_id, libusb_device *usbdev, | |
59 | GSList **devices) | |
b908f067 | 60 | { |
00910580 UH |
61 | int ret; |
62 | unsigned int i; | |
b908f067 | 63 | struct sr_dev_inst *sdi; |
1644fb24 | 64 | struct dev_context *devc; |
c4f3ed4b | 65 | |
00910580 | 66 | ret = SR_OK; |
f3a35908 | 67 | |
f57d8ffe | 68 | devc = g_malloc0(sizeof(struct dev_context)); |
b908f067 UH |
69 | |
70 | /* Set some sane defaults. */ | |
00910580 UH |
71 | devc->prof = &cv_profiles[model]; |
72 | devc->ftdic = NULL; /* Will be set in the open() API call. */ | |
73 | devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */ | |
1644fb24 BV |
74 | devc->limit_msec = 0; |
75 | devc->limit_samples = 0; | |
1644fb24 BV |
76 | memset(devc->mangled_buf, 0, BS); |
77 | devc->final_buf = NULL; | |
00910580 UH |
78 | devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */ |
79 | devc->trigger_mask = 0x0000; /* All channels: "don't care". */ | |
80 | devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */ | |
1644fb24 BV |
81 | devc->trigger_found = 0; |
82 | devc->done = 0; | |
83 | devc->block_counter = 0; | |
00910580 | 84 | devc->divcount = 0; |
67f890d5 UH |
85 | devc->usb_vid = des->idVendor; |
86 | devc->usb_pid = des->idProduct; | |
00910580 | 87 | memset(devc->samplerates, 0, sizeof(uint64_t) * 255); |
b908f067 UH |
88 | |
89 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 90 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
b172c130 | 91 | sr_err("Failed to allocate memory for sample buffer."); |
00910580 | 92 | ret = SR_ERR_MALLOC; |
1644fb24 | 93 | goto err_free_devc; |
b908f067 UH |
94 | } |
95 | ||
00910580 UH |
96 | /* We now know the device, set its max. samplerate as default. */ |
97 | devc->cur_samplerate = devc->prof->max_samplerate; | |
b908f067 | 98 | |
aac29cc1 | 99 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
45884333 | 100 | sdi->status = SR_ST_INACTIVE; |
0af636be UH |
101 | sdi->vendor = g_strdup("ChronoVu"); |
102 | sdi->model = g_strdup(devc->prof->modelname); | |
67f890d5 UH |
103 | sdi->serial_num = g_strdup(serial_num); |
104 | sdi->connection_id = g_strdup(connection_id); | |
105 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(usbdev), | |
106 | libusb_get_device_address(usbdev), NULL); | |
1644fb24 | 107 | sdi->priv = devc; |
b908f067 | 108 | |
5e23fcab ML |
109 | for (i = 0; i < devc->prof->num_channels; i++) |
110 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, | |
0f34cb47 | 111 | cv_channel_names[i]); |
87ca93c5 | 112 | |
00910580 | 113 | *devices = g_slist_append(*devices, sdi); |
b908f067 | 114 | |
65c8d48f BV |
115 | if (ret == SR_OK) |
116 | return SR_OK; | |
b908f067 | 117 | |
1644fb24 BV |
118 | err_free_devc: |
119 | g_free(devc); | |
b908f067 | 120 | |
00910580 UH |
121 | return ret; |
122 | } | |
123 | ||
4f840ce9 | 124 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
00910580 | 125 | { |
67f890d5 UH |
126 | int i, ret, model; |
127 | struct drv_context *drvc; | |
128 | GSList *devices, *conn_devices, *l; | |
129 | struct sr_usb_dev_inst *usb; | |
130 | struct sr_config *src; | |
131 | struct libusb_device_descriptor des; | |
132 | libusb_device **devlist; | |
133 | struct libusb_device_handle *hdl; | |
134 | const char *conn; | |
135 | char product[64], serial_num[64], connection_id[64]; | |
00910580 | 136 | |
67f890d5 | 137 | drvc = di->context; |
67f890d5 UH |
138 | |
139 | conn = NULL; | |
140 | for (l = options; l; l = l->next) { | |
141 | src = l->data; | |
142 | switch (src->key) { | |
143 | case SR_CONF_CONN: | |
144 | conn = g_variant_get_string(src->data, NULL); | |
145 | break; | |
146 | } | |
00910580 | 147 | } |
67f890d5 UH |
148 | if (conn) |
149 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
150 | else | |
151 | conn_devices = NULL; | |
00910580 | 152 | |
67f890d5 UH |
153 | devices = NULL; |
154 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
155 | ||
156 | for (i = 0; devlist[i]; i++) { | |
157 | if (conn) { | |
158 | for (l = conn_devices; l; l = l->next) { | |
159 | usb = l->data; | |
160 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
161 | && usb->address == libusb_get_device_address(devlist[i])) | |
162 | break; | |
163 | } | |
164 | if (!l) | |
165 | /* This device matched none of the ones that | |
166 | * matched the conn specification. */ | |
167 | continue; | |
168 | } | |
169 | ||
170 | libusb_get_device_descriptor(devlist[i], &des); | |
171 | ||
172 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) | |
173 | continue; | |
174 | ||
175 | if (des.iProduct == 0) { | |
176 | product[0] = '\0'; | |
177 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
178 | des.iProduct, (unsigned char *)product, | |
179 | sizeof(product))) < 0) { | |
180 | sr_warn("Failed to get product string descriptor: %s.", | |
181 | libusb_error_name(ret)); | |
182 | continue; | |
183 | } | |
184 | ||
185 | if (des.iSerialNumber == 0) { | |
186 | serial_num[0] = '\0'; | |
187 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
188 | des.iSerialNumber, (unsigned char *)serial_num, | |
189 | sizeof(serial_num))) < 0) { | |
190 | sr_warn("Failed to get serial number string descriptor: %s.", | |
191 | libusb_error_name(ret)); | |
192 | continue; | |
193 | } | |
194 | ||
67f890d5 UH |
195 | libusb_close(hdl); |
196 | ||
6c1a76d1 RT |
197 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) |
198 | continue; | |
7bbe5a2b | 199 | |
7bf81cb7 | 200 | if (!strcmp(product, "ChronoVu LA8")) |
67f890d5 | 201 | model = 0; |
7bf81cb7 | 202 | else if (!strcmp(product, "ChronoVu LA16")) |
67f890d5 | 203 | model = 1; |
7bf81cb7 UH |
204 | else |
205 | continue; /* Unknown iProduct string, ignore. */ | |
67f890d5 UH |
206 | |
207 | sr_dbg("Found %s (%04x:%04x, %d.%d, %s).", | |
208 | product, des.idVendor, des.idProduct, | |
209 | libusb_get_bus_number(devlist[i]), | |
210 | libusb_get_device_address(devlist[i]), connection_id); | |
211 | ||
15a5bfe4 | 212 | if ((ret = add_device(model, &des, serial_num, connection_id, |
67f890d5 | 213 | devlist[i], &devices)) < 0) { |
00910580 | 214 | sr_dbg("Failed to add device: %d.", ret); |
67f890d5 | 215 | } |
00910580 UH |
216 | } |
217 | ||
67f890d5 UH |
218 | libusb_free_device_list(devlist, 1); |
219 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
00910580 | 220 | |
15a5bfe4 | 221 | return std_scan_complete(di, devices); |
b908f067 UH |
222 | } |
223 | ||
6078d2c9 | 224 | static int dev_open(struct sr_dev_inst *sdi) |
b908f067 | 225 | { |
1644fb24 | 226 | struct dev_context *devc; |
25a0f108 | 227 | int ret; |
b908f067 | 228 | |
61c90858 | 229 | devc = sdi->priv; |
b908f067 | 230 | |
00910580 UH |
231 | if (!(devc->ftdic = ftdi_new())) { |
232 | sr_err("Failed to initialize libftdi."); | |
233 | return SR_ERR; | |
234 | } | |
235 | ||
236 | sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname, | |
237 | devc->usb_vid, devc->usb_pid); | |
b908f067 | 238 | |
00910580 UH |
239 | if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid, |
240 | devc->usb_pid, devc->prof->iproduct, NULL)) < 0) { | |
b172c130 UH |
241 | sr_err("Failed to open FTDI device (%d): %s.", |
242 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 243 | goto err_ftdi_free; |
b908f067 | 244 | } |
b908f067 | 245 | |
1644fb24 | 246 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { |
b172c130 UH |
247 | sr_err("Failed to purge FTDI buffers (%d): %s.", |
248 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 249 | goto err_ftdi_free; |
b908f067 | 250 | } |
b908f067 | 251 | |
1644fb24 | 252 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
b172c130 UH |
253 | sr_err("Failed to enable FTDI flow control (%d): %s.", |
254 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 255 | goto err_ftdi_free; |
b908f067 | 256 | } |
b908f067 | 257 | |
b908f067 UH |
258 | g_usleep(100 * 1000); |
259 | ||
7e463623 | 260 | return SR_OK; |
b908f067 | 261 | |
00910580 UH |
262 | err_ftdi_free: |
263 | ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */ | |
264 | devc->ftdic = NULL; | |
7e463623 | 265 | return SR_ERR; |
b908f067 UH |
266 | } |
267 | ||
6078d2c9 | 268 | static int dev_close(struct sr_dev_inst *sdi) |
b908f067 | 269 | { |
00910580 | 270 | int ret; |
1644fb24 | 271 | struct dev_context *devc; |
b908f067 | 272 | |
00910580 | 273 | devc = sdi->priv; |
b908f067 | 274 | |
f1ba6b4b UH |
275 | if (!devc->ftdic) |
276 | return SR_ERR_BUG; | |
277 | ||
278 | if ((ret = ftdi_usb_close(devc->ftdic)) < 0) | |
00910580 UH |
279 | sr_err("Failed to close FTDI device (%d): %s.", |
280 | ret, ftdi_get_error_string(devc->ftdic)); | |
093e1cba | 281 | |
f1ba6b4b | 282 | return (ret == 0) ? SR_OK : SR_ERR; |
b908f067 UH |
283 | } |
284 | ||
dd7a72ea UH |
285 | static int config_get(uint32_t key, GVariant **data, |
286 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
b908f067 | 287 | { |
1644fb24 | 288 | struct dev_context *devc; |
67f890d5 | 289 | struct sr_usb_dev_inst *usb; |
b908f067 | 290 | |
53b4680f | 291 | (void)cg; |
8f996b89 | 292 | |
584560f1 | 293 | switch (key) { |
67f890d5 UH |
294 | case SR_CONF_CONN: |
295 | if (!sdi || !(usb = sdi->conn)) | |
296 | return SR_ERR_ARG; | |
95c1fe62 | 297 | *data = g_variant_new_printf("%d.%d", usb->bus, usb->address); |
67f890d5 | 298 | break; |
123e1313 | 299 | case SR_CONF_SAMPLERATE: |
709468ba | 300 | if (!sdi) |
b172c130 | 301 | return SR_ERR_BUG; |
709468ba | 302 | devc = sdi->priv; |
b172c130 | 303 | *data = g_variant_new_uint64(devc->cur_samplerate); |
b908f067 | 304 | break; |
cfe8a84d | 305 | default: |
bd6fbf62 | 306 | return SR_ERR_NA; |
b908f067 UH |
307 | } |
308 | ||
6a2761fd | 309 | return SR_OK; |
b908f067 UH |
310 | } |
311 | ||
dd7a72ea UH |
312 | static int config_set(uint32_t key, GVariant *data, |
313 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
b908f067 | 314 | { |
1644fb24 | 315 | struct dev_context *devc; |
b908f067 | 316 | |
53b4680f | 317 | (void)cg; |
8f996b89 | 318 | |
b0baddef | 319 | devc = sdi->priv; |
b908f067 | 320 | |
584560f1 | 321 | switch (key) { |
1953564a | 322 | case SR_CONF_SAMPLERATE: |
00910580 | 323 | if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0) |
b908f067 | 324 | return SR_ERR; |
b908f067 | 325 | break; |
1953564a | 326 | case SR_CONF_LIMIT_MSEC: |
1bec72d2 | 327 | devc->limit_msec = g_variant_get_uint64(data); |
b908f067 | 328 | break; |
1953564a | 329 | case SR_CONF_LIMIT_SAMPLES: |
1bec72d2 | 330 | devc->limit_samples = g_variant_get_uint64(data); |
b908f067 UH |
331 | break; |
332 | default: | |
bd6fbf62 | 333 | return SR_ERR_NA; |
b908f067 UH |
334 | } |
335 | ||
336 | return SR_OK; | |
337 | } | |
338 | ||
dd7a72ea UH |
339 | static int config_list(uint32_t key, GVariant **data, |
340 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
a1c743fc | 341 | { |
00910580 | 342 | struct dev_context *devc; |
a1c743fc | 343 | |
e66d1892 | 344 | devc = (sdi) ? sdi->priv : NULL; |
a1c743fc BV |
345 | |
346 | switch (key) { | |
67f890d5 | 347 | case SR_CONF_SCAN_OPTIONS: |
67f890d5 | 348 | case SR_CONF_DEVICE_OPTIONS: |
e66d1892 | 349 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); |
a1c743fc | 350 | case SR_CONF_SAMPLERATE: |
00910580 | 351 | cv_fill_samplerates_if_needed(sdi); |
53012da6 | 352 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(devc->samplerates)); |
a1c743fc | 353 | break; |
f0de2dd0 | 354 | case SR_CONF_LIMIT_SAMPLES: |
755eb221 | 355 | if (!devc || !devc->prof) |
69bdcd8b | 356 | return SR_ERR_BUG; |
a162eeb2 | 357 | *data = std_gvar_tuple_u64(0, (devc->prof->model == CHRONOVU_LA8) ? MAX_NUM_SAMPLES : MAX_NUM_SAMPLES / 2); |
f0de2dd0 | 358 | break; |
aeff7fa2 | 359 | case SR_CONF_TRIGGER_MATCH: |
755eb221 | 360 | if (!devc || !devc->prof) |
13dd25bd | 361 | return SR_ERR_BUG; |
105df674 | 362 | *data = std_gvar_array_i32(trigger_matches, devc->prof->num_trigger_matches); |
c50277a6 | 363 | break; |
a1c743fc | 364 | default: |
bd6fbf62 | 365 | return SR_ERR_NA; |
a1c743fc BV |
366 | } |
367 | ||
368 | return SR_OK; | |
369 | } | |
370 | ||
b908f067 UH |
371 | static int receive_data(int fd, int revents, void *cb_data) |
372 | { | |
373 | int i, ret; | |
374 | struct sr_dev_inst *sdi; | |
1644fb24 | 375 | struct dev_context *devc; |
b908f067 | 376 | |
b908f067 UH |
377 | (void)fd; |
378 | (void)revents; | |
379 | ||
380 | if (!(sdi = cb_data)) { | |
b172c130 | 381 | sr_err("cb_data was NULL."); |
b908f067 UH |
382 | return FALSE; |
383 | } | |
384 | ||
1644fb24 | 385 | if (!(devc = sdi->priv)) { |
b172c130 | 386 | sr_err("sdi->priv was NULL."); |
b908f067 UH |
387 | return FALSE; |
388 | } | |
389 | ||
1644fb24 | 390 | if (!devc->ftdic) { |
b172c130 | 391 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
392 | return FALSE; |
393 | } | |
394 | ||
395 | /* Get one block of data. */ | |
b172c130 UH |
396 | if ((ret = cv_read_block(devc)) < 0) { |
397 | sr_err("Failed to read data block: %d.", ret); | |
d2f7c417 | 398 | sr_dev_acquisition_stop(sdi); |
b908f067 UH |
399 | return FALSE; |
400 | } | |
401 | ||
402 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
403 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
404 | devc->block_counter++; | |
b908f067 UH |
405 | return TRUE; |
406 | } | |
407 | ||
f3a35908 | 408 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 | 409 | |
b0efc84e UH |
410 | /* |
411 | * All data was received and demangled, send it to the session bus. | |
412 | * | |
413 | * Note: Due to the method how data is spread across the 8MByte of | |
414 | * SDRAM, we can _not_ send it to the session bus in a streaming | |
415 | * manner while we receive it. We have to receive and de-mangle the | |
416 | * full 8MByte first, only then the whole buffer contains valid data. | |
417 | */ | |
b908f067 | 418 | for (i = 0; i < NUM_BLOCKS; i++) |
695dc859 | 419 | cv_send_block_to_session_bus(sdi, i); |
b908f067 | 420 | |
d2f7c417 | 421 | sr_dev_acquisition_stop(sdi); |
b908f067 | 422 | |
b908f067 UH |
423 | return TRUE; |
424 | } | |
425 | ||
695dc859 | 426 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
b908f067 | 427 | { |
1644fb24 | 428 | struct dev_context *devc; |
00910580 UH |
429 | uint8_t buf[8]; |
430 | int bytes_to_write, bytes_written; | |
b908f067 | 431 | |
208c1d35 | 432 | devc = sdi->priv; |
b908f067 | 433 | |
1644fb24 | 434 | if (!devc->ftdic) { |
b172c130 | 435 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
436 | return SR_ERR_BUG; |
437 | } | |
438 | ||
00910580 | 439 | devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate); |
1644fb24 | 440 | if (devc->divcount == 0xff) { |
b172c130 | 441 | sr_err("Invalid divcount/samplerate."); |
b908f067 UH |
442 | return SR_ERR; |
443 | } | |
444 | ||
aeff7fa2 BV |
445 | if (cv_convert_trigger(sdi) != SR_OK) { |
446 | sr_err("Failed to configure trigger."); | |
014359e3 BV |
447 | return SR_ERR; |
448 | } | |
449 | ||
b908f067 | 450 | /* Fill acquisition parameters into buf[]. */ |
00910580 UH |
451 | if (devc->prof->model == CHRONOVU_LA8) { |
452 | buf[0] = devc->divcount; | |
453 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
454 | buf[2] = devc->trigger_pattern & 0xff; | |
455 | buf[3] = devc->trigger_mask & 0xff; | |
456 | bytes_to_write = 4; | |
457 | } else { | |
458 | buf[0] = devc->divcount; | |
459 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
460 | buf[2] = (devc->trigger_pattern & 0xff00) >> 8; /* LSB */ | |
461 | buf[3] = (devc->trigger_pattern & 0x00ff) >> 0; /* MSB */ | |
462 | buf[4] = (devc->trigger_mask & 0xff00) >> 8; /* LSB */ | |
463 | buf[5] = (devc->trigger_mask & 0x00ff) >> 0; /* MSB */ | |
464 | buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */ | |
465 | buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */ | |
466 | bytes_to_write = 8; | |
467 | } | |
b908f067 UH |
468 | |
469 | /* Start acquisition. */ | |
00910580 | 470 | bytes_written = cv_write(devc, buf, bytes_to_write); |
b908f067 | 471 | |
00910580 UH |
472 | if (bytes_written < 0 || bytes_written != bytes_to_write) { |
473 | sr_err("Acquisition failed to start."); | |
afc88319 | 474 | return SR_ERR; |
b908f067 UH |
475 | } |
476 | ||
bee2b016 | 477 | std_session_send_df_header(sdi); |
b908f067 | 478 | |
b908f067 | 479 | /* Time when we should be done (for detecting trigger timeouts). */ |
00910580 UH |
480 | devc->done = (devc->divcount + 1) * devc->prof->trigger_constant + |
481 | g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND); | |
1644fb24 BV |
482 | devc->block_counter = 0; |
483 | devc->trigger_found = 0; | |
b908f067 | 484 | |
b172c130 | 485 | /* Hook up a dummy handler to receive data from the device. */ |
c650d3ec | 486 | sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); |
b908f067 UH |
487 | |
488 | return SR_OK; | |
489 | } | |
490 | ||
695dc859 | 491 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
b908f067 | 492 | { |
102f1239 | 493 | sr_session_source_remove(sdi->session, -1); |
bee2b016 | 494 | std_session_send_df_end(sdi); |
b908f067 UH |
495 | |
496 | return SR_OK; | |
497 | } | |
498 | ||
dd5c48a6 | 499 | static struct sr_dev_driver chronovu_la_driver_info = { |
7b356712 UH |
500 | .name = "chronovu-la", |
501 | .longname = "ChronoVu LA8/LA16", | |
b908f067 | 502 | .api_version = 1, |
c2fdcc25 | 503 | .init = std_init, |
700d6b64 | 504 | .cleanup = std_cleanup, |
6078d2c9 | 505 | .scan = scan, |
c01bf34c | 506 | .dev_list = std_dev_list, |
3b412e3a | 507 | .dev_clear = dev_clear, |
035a1078 BV |
508 | .config_get = config_get, |
509 | .config_set = config_set, | |
a1c743fc | 510 | .config_list = config_list, |
6078d2c9 UH |
511 | .dev_open = dev_open, |
512 | .dev_close = dev_close, | |
513 | .dev_acquisition_start = dev_acquisition_start, | |
514 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 515 | .context = NULL, |
b908f067 | 516 | }; |
dd5c48a6 | 517 | SR_REGISTER_DEV_DRIVER(chronovu_la_driver_info); |