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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 | |
bf8e267b | 23 | #define SCAN_EXPECTED_VENDOR 0x0403 |
64414853 | 24 | |
67f890d5 UH |
25 | static const uint32_t scanopts[] = { |
26 | SR_CONF_CONN, | |
27 | }; | |
28 | ||
55fb76b3 UH |
29 | static const uint32_t drvopts[] = { |
30 | SR_CONF_LOGIC_ANALYZER, | |
31 | }; | |
32 | ||
67f890d5 | 33 | static const uint32_t devopts[] = { |
5827f61b BV |
34 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, |
35 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_LIST, | |
67f890d5 | 36 | SR_CONF_CONN | SR_CONF_GET, |
5827f61b BV |
37 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
38 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
1bec72d2 BV |
39 | }; |
40 | ||
aeff7fa2 BV |
41 | static const int32_t trigger_matches[] = { |
42 | SR_TRIGGER_ZERO, | |
43 | SR_TRIGGER_ONE, | |
44 | SR_TRIGGER_RISING, | |
45 | SR_TRIGGER_FALLING, | |
46 | }; | |
47 | ||
3553451f | 48 | static void clear_helper(struct dev_context *devc) |
c4f3ed4b | 49 | { |
97900799 UH |
50 | ftdi_free(devc->ftdic); |
51 | g_free(devc->final_buf); | |
52 | } | |
c4f3ed4b | 53 | |
4f840ce9 | 54 | static int dev_clear(const struct sr_dev_driver *di) |
97900799 | 55 | { |
3553451f | 56 | return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper); |
c4f3ed4b BV |
57 | } |
58 | ||
15a5bfe4 LPC |
59 | static int add_device(int model, struct libusb_device_descriptor *des, |
60 | const char *serial_num, const char *connection_id, libusb_device *usbdev, | |
61 | GSList **devices) | |
b908f067 | 62 | { |
00910580 UH |
63 | int ret; |
64 | unsigned int i; | |
b908f067 | 65 | struct sr_dev_inst *sdi; |
1644fb24 | 66 | struct dev_context *devc; |
c4f3ed4b | 67 | |
00910580 | 68 | ret = SR_OK; |
f3a35908 | 69 | |
f57d8ffe | 70 | devc = g_malloc0(sizeof(struct dev_context)); |
b908f067 UH |
71 | |
72 | /* Set some sane defaults. */ | |
00910580 UH |
73 | devc->prof = &cv_profiles[model]; |
74 | devc->ftdic = NULL; /* Will be set in the open() API call. */ | |
75 | devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */ | |
1644fb24 BV |
76 | devc->limit_msec = 0; |
77 | devc->limit_samples = 0; | |
1644fb24 BV |
78 | memset(devc->mangled_buf, 0, BS); |
79 | devc->final_buf = NULL; | |
00910580 UH |
80 | devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */ |
81 | devc->trigger_mask = 0x0000; /* All channels: "don't care". */ | |
82 | devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */ | |
1644fb24 BV |
83 | devc->trigger_found = 0; |
84 | devc->done = 0; | |
85 | devc->block_counter = 0; | |
00910580 | 86 | devc->divcount = 0; |
67f890d5 UH |
87 | devc->usb_vid = des->idVendor; |
88 | devc->usb_pid = des->idProduct; | |
00910580 | 89 | memset(devc->samplerates, 0, sizeof(uint64_t) * 255); |
b908f067 UH |
90 | |
91 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 92 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
b172c130 | 93 | sr_err("Failed to allocate memory for sample buffer."); |
00910580 | 94 | ret = SR_ERR_MALLOC; |
1644fb24 | 95 | goto err_free_devc; |
b908f067 UH |
96 | } |
97 | ||
00910580 UH |
98 | /* We now know the device, set its max. samplerate as default. */ |
99 | devc->cur_samplerate = devc->prof->max_samplerate; | |
b908f067 | 100 | |
aac29cc1 | 101 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
45884333 | 102 | sdi->status = SR_ST_INACTIVE; |
0af636be UH |
103 | sdi->vendor = g_strdup("ChronoVu"); |
104 | sdi->model = g_strdup(devc->prof->modelname); | |
67f890d5 UH |
105 | sdi->serial_num = g_strdup(serial_num); |
106 | sdi->connection_id = g_strdup(connection_id); | |
107 | sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(usbdev), | |
108 | libusb_get_device_address(usbdev), NULL); | |
1644fb24 | 109 | sdi->priv = devc; |
b908f067 | 110 | |
5e23fcab ML |
111 | for (i = 0; i < devc->prof->num_channels; i++) |
112 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, | |
0f34cb47 | 113 | cv_channel_names[i]); |
87ca93c5 | 114 | |
00910580 | 115 | *devices = g_slist_append(*devices, sdi); |
b908f067 | 116 | |
65c8d48f BV |
117 | if (ret == SR_OK) |
118 | return SR_OK; | |
b908f067 | 119 | |
1644fb24 BV |
120 | err_free_devc: |
121 | g_free(devc); | |
b908f067 | 122 | |
00910580 UH |
123 | return ret; |
124 | } | |
125 | ||
4f840ce9 | 126 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
00910580 | 127 | { |
67f890d5 | 128 | struct drv_context *drvc; |
204dd31f GS |
129 | GSList *devices; |
130 | const char *conn; | |
131 | int ret; | |
132 | GSList *conn_devices, *l; | |
133 | size_t i; | |
67f890d5 | 134 | struct sr_usb_dev_inst *usb; |
204dd31f | 135 | uint8_t bus, addr; |
67f890d5 UH |
136 | struct libusb_device_descriptor des; |
137 | libusb_device **devlist; | |
138 | struct libusb_device_handle *hdl; | |
67f890d5 | 139 | char product[64], serial_num[64], connection_id[64]; |
204dd31f | 140 | int model; |
00910580 | 141 | |
67f890d5 | 142 | drvc = di->context; |
204dd31f | 143 | devices = NULL; |
67f890d5 UH |
144 | |
145 | conn = NULL; | |
204dd31f GS |
146 | (void)sr_serial_extract_options(options, &conn, NULL); |
147 | conn_devices = NULL; | |
67f890d5 UH |
148 | if (conn) |
149 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
00910580 | 150 | |
67f890d5 | 151 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); |
67f890d5 | 152 | for (i = 0; devlist[i]; i++) { |
204dd31f GS |
153 | bus = libusb_get_bus_number(devlist[i]); |
154 | addr = libusb_get_device_address(devlist[i]); | |
67f890d5 | 155 | if (conn) { |
204dd31f | 156 | /* Check if the connection matches the user spec. */ |
67f890d5 UH |
157 | for (l = conn_devices; l; l = l->next) { |
158 | usb = l->data; | |
204dd31f | 159 | if (usb->bus == bus && usb->address == addr) |
67f890d5 UH |
160 | break; |
161 | } | |
162 | if (!l) | |
67f890d5 UH |
163 | continue; |
164 | } | |
165 | ||
166 | libusb_get_device_descriptor(devlist[i], &des); | |
167 | ||
bf8e267b GS |
168 | /* |
169 | * In theory we'd accept any USB device with a matching | |
170 | * product string. In practice the enumeration takes a | |
171 | * shortcut and only inspects devices when their USB VID | |
172 | * matches the expectation. This avoids access to flaky | |
173 | * devices which are unrelated to measurement purposes | |
174 | * yet cause trouble when accessed including segfaults, | |
175 | * while libusb won't transparently handle their flaws. | |
176 | * | |
177 | * See https://sigrok.org/bugzilla/show_bug.cgi?id=1115 | |
178 | * and https://github.com/sigrokproject/libsigrok/pull/166 | |
179 | * for a discussion. | |
180 | */ | |
181 | if (des.idVendor != SCAN_EXPECTED_VENDOR) | |
64414853 MA |
182 | continue; |
183 | ||
67f890d5 UH |
184 | if ((ret = libusb_open(devlist[i], &hdl)) < 0) |
185 | continue; | |
186 | ||
187 | if (des.iProduct == 0) { | |
188 | product[0] = '\0'; | |
189 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
190 | des.iProduct, (unsigned char *)product, | |
191 | sizeof(product))) < 0) { | |
192 | sr_warn("Failed to get product string descriptor: %s.", | |
193 | libusb_error_name(ret)); | |
194 | continue; | |
195 | } | |
196 | ||
197 | if (des.iSerialNumber == 0) { | |
198 | serial_num[0] = '\0'; | |
199 | } else if ((ret = libusb_get_string_descriptor_ascii(hdl, | |
200 | des.iSerialNumber, (unsigned char *)serial_num, | |
201 | sizeof(serial_num))) < 0) { | |
202 | sr_warn("Failed to get serial number string descriptor: %s.", | |
203 | libusb_error_name(ret)); | |
204 | continue; | |
205 | } | |
206 | ||
67f890d5 UH |
207 | libusb_close(hdl); |
208 | ||
6c1a76d1 RT |
209 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) |
210 | continue; | |
7bbe5a2b | 211 | |
7bf81cb7 | 212 | if (!strcmp(product, "ChronoVu LA8")) |
67f890d5 | 213 | model = 0; |
7bf81cb7 | 214 | else if (!strcmp(product, "ChronoVu LA16")) |
67f890d5 | 215 | model = 1; |
7bf81cb7 UH |
216 | else |
217 | continue; /* Unknown iProduct string, ignore. */ | |
67f890d5 UH |
218 | |
219 | sr_dbg("Found %s (%04x:%04x, %d.%d, %s).", | |
220 | product, des.idVendor, des.idProduct, | |
221 | libusb_get_bus_number(devlist[i]), | |
222 | libusb_get_device_address(devlist[i]), connection_id); | |
223 | ||
15a5bfe4 | 224 | if ((ret = add_device(model, &des, serial_num, connection_id, |
67f890d5 | 225 | devlist[i], &devices)) < 0) { |
00910580 | 226 | sr_dbg("Failed to add device: %d.", ret); |
67f890d5 | 227 | } |
00910580 | 228 | } |
67f890d5 UH |
229 | libusb_free_device_list(devlist, 1); |
230 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
00910580 | 231 | |
15a5bfe4 | 232 | return std_scan_complete(di, devices); |
b908f067 UH |
233 | } |
234 | ||
6078d2c9 | 235 | static int dev_open(struct sr_dev_inst *sdi) |
b908f067 | 236 | { |
1644fb24 | 237 | struct dev_context *devc; |
25a0f108 | 238 | int ret; |
b908f067 | 239 | |
61c90858 | 240 | devc = sdi->priv; |
b908f067 | 241 | |
00910580 UH |
242 | if (!(devc->ftdic = ftdi_new())) { |
243 | sr_err("Failed to initialize libftdi."); | |
244 | return SR_ERR; | |
245 | } | |
246 | ||
247 | sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname, | |
248 | devc->usb_vid, devc->usb_pid); | |
b908f067 | 249 | |
00910580 UH |
250 | if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid, |
251 | devc->usb_pid, devc->prof->iproduct, NULL)) < 0) { | |
b172c130 UH |
252 | sr_err("Failed to open FTDI device (%d): %s.", |
253 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 254 | goto err_ftdi_free; |
b908f067 | 255 | } |
b908f067 | 256 | |
e1a712ca | 257 | if ((ret = PURGE_FTDI_BOTH(devc->ftdic)) < 0) { |
b172c130 UH |
258 | sr_err("Failed to purge FTDI buffers (%d): %s.", |
259 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 260 | goto err_ftdi_free; |
b908f067 | 261 | } |
b908f067 | 262 | |
1644fb24 | 263 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
b172c130 UH |
264 | sr_err("Failed to enable FTDI flow control (%d): %s.", |
265 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 266 | goto err_ftdi_free; |
b908f067 | 267 | } |
b908f067 | 268 | |
b908f067 UH |
269 | g_usleep(100 * 1000); |
270 | ||
7e463623 | 271 | return SR_OK; |
b908f067 | 272 | |
00910580 UH |
273 | err_ftdi_free: |
274 | ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */ | |
275 | devc->ftdic = NULL; | |
7e463623 | 276 | return SR_ERR; |
b908f067 UH |
277 | } |
278 | ||
6078d2c9 | 279 | static int dev_close(struct sr_dev_inst *sdi) |
b908f067 | 280 | { |
00910580 | 281 | int ret; |
1644fb24 | 282 | struct dev_context *devc; |
b908f067 | 283 | |
00910580 | 284 | devc = sdi->priv; |
b908f067 | 285 | |
f1ba6b4b UH |
286 | if (!devc->ftdic) |
287 | return SR_ERR_BUG; | |
288 | ||
289 | if ((ret = ftdi_usb_close(devc->ftdic)) < 0) | |
00910580 UH |
290 | sr_err("Failed to close FTDI device (%d): %s.", |
291 | ret, ftdi_get_error_string(devc->ftdic)); | |
093e1cba | 292 | |
f1ba6b4b | 293 | return (ret == 0) ? SR_OK : SR_ERR; |
b908f067 UH |
294 | } |
295 | ||
dd7a72ea UH |
296 | static int config_get(uint32_t key, GVariant **data, |
297 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
b908f067 | 298 | { |
1644fb24 | 299 | struct dev_context *devc; |
67f890d5 | 300 | struct sr_usb_dev_inst *usb; |
b908f067 | 301 | |
53b4680f | 302 | (void)cg; |
8f996b89 | 303 | |
584560f1 | 304 | switch (key) { |
67f890d5 UH |
305 | case SR_CONF_CONN: |
306 | if (!sdi || !(usb = sdi->conn)) | |
307 | return SR_ERR_ARG; | |
95c1fe62 | 308 | *data = g_variant_new_printf("%d.%d", usb->bus, usb->address); |
67f890d5 | 309 | break; |
123e1313 | 310 | case SR_CONF_SAMPLERATE: |
709468ba | 311 | if (!sdi) |
b172c130 | 312 | return SR_ERR_BUG; |
709468ba | 313 | devc = sdi->priv; |
b172c130 | 314 | *data = g_variant_new_uint64(devc->cur_samplerate); |
b908f067 | 315 | break; |
cfe8a84d | 316 | default: |
bd6fbf62 | 317 | return SR_ERR_NA; |
b908f067 UH |
318 | } |
319 | ||
6a2761fd | 320 | return SR_OK; |
b908f067 UH |
321 | } |
322 | ||
dd7a72ea UH |
323 | static int config_set(uint32_t key, GVariant *data, |
324 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
b908f067 | 325 | { |
1644fb24 | 326 | struct dev_context *devc; |
b908f067 | 327 | |
53b4680f | 328 | (void)cg; |
8f996b89 | 329 | |
b0baddef | 330 | devc = sdi->priv; |
b908f067 | 331 | |
584560f1 | 332 | switch (key) { |
1953564a | 333 | case SR_CONF_SAMPLERATE: |
00910580 | 334 | if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0) |
b908f067 | 335 | return SR_ERR; |
b908f067 | 336 | break; |
1953564a | 337 | case SR_CONF_LIMIT_MSEC: |
1bec72d2 | 338 | devc->limit_msec = g_variant_get_uint64(data); |
b908f067 | 339 | break; |
1953564a | 340 | case SR_CONF_LIMIT_SAMPLES: |
1bec72d2 | 341 | devc->limit_samples = g_variant_get_uint64(data); |
b908f067 UH |
342 | break; |
343 | default: | |
bd6fbf62 | 344 | return SR_ERR_NA; |
b908f067 UH |
345 | } |
346 | ||
347 | return SR_OK; | |
348 | } | |
349 | ||
dd7a72ea UH |
350 | static int config_list(uint32_t key, GVariant **data, |
351 | const struct sr_dev_inst *sdi, const struct sr_channel_group *cg) | |
a1c743fc | 352 | { |
00910580 | 353 | struct dev_context *devc; |
a1c743fc | 354 | |
e66d1892 | 355 | devc = (sdi) ? sdi->priv : NULL; |
a1c743fc BV |
356 | |
357 | switch (key) { | |
67f890d5 | 358 | case SR_CONF_SCAN_OPTIONS: |
67f890d5 | 359 | case SR_CONF_DEVICE_OPTIONS: |
e66d1892 | 360 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); |
a1c743fc | 361 | case SR_CONF_SAMPLERATE: |
00910580 | 362 | cv_fill_samplerates_if_needed(sdi); |
53012da6 | 363 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(devc->samplerates)); |
a1c743fc | 364 | break; |
f0de2dd0 | 365 | case SR_CONF_LIMIT_SAMPLES: |
755eb221 | 366 | if (!devc || !devc->prof) |
69bdcd8b | 367 | return SR_ERR_BUG; |
a162eeb2 | 368 | *data = std_gvar_tuple_u64(0, (devc->prof->model == CHRONOVU_LA8) ? MAX_NUM_SAMPLES : MAX_NUM_SAMPLES / 2); |
f0de2dd0 | 369 | break; |
aeff7fa2 | 370 | case SR_CONF_TRIGGER_MATCH: |
755eb221 | 371 | if (!devc || !devc->prof) |
13dd25bd | 372 | return SR_ERR_BUG; |
105df674 | 373 | *data = std_gvar_array_i32(trigger_matches, devc->prof->num_trigger_matches); |
c50277a6 | 374 | break; |
a1c743fc | 375 | default: |
bd6fbf62 | 376 | return SR_ERR_NA; |
a1c743fc BV |
377 | } |
378 | ||
379 | return SR_OK; | |
380 | } | |
381 | ||
b908f067 UH |
382 | static int receive_data(int fd, int revents, void *cb_data) |
383 | { | |
384 | int i, ret; | |
385 | struct sr_dev_inst *sdi; | |
1644fb24 | 386 | struct dev_context *devc; |
b908f067 | 387 | |
b908f067 UH |
388 | (void)fd; |
389 | (void)revents; | |
390 | ||
391 | if (!(sdi = cb_data)) { | |
b172c130 | 392 | sr_err("cb_data was NULL."); |
b908f067 UH |
393 | return FALSE; |
394 | } | |
395 | ||
1644fb24 | 396 | if (!(devc = sdi->priv)) { |
b172c130 | 397 | sr_err("sdi->priv was NULL."); |
b908f067 UH |
398 | return FALSE; |
399 | } | |
400 | ||
1644fb24 | 401 | if (!devc->ftdic) { |
b172c130 | 402 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
403 | return FALSE; |
404 | } | |
405 | ||
406 | /* Get one block of data. */ | |
b172c130 UH |
407 | if ((ret = cv_read_block(devc)) < 0) { |
408 | sr_err("Failed to read data block: %d.", ret); | |
d2f7c417 | 409 | sr_dev_acquisition_stop(sdi); |
b908f067 UH |
410 | return FALSE; |
411 | } | |
412 | ||
413 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
414 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
415 | devc->block_counter++; | |
b908f067 UH |
416 | return TRUE; |
417 | } | |
418 | ||
f3a35908 | 419 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 | 420 | |
b0efc84e UH |
421 | /* |
422 | * All data was received and demangled, send it to the session bus. | |
423 | * | |
424 | * Note: Due to the method how data is spread across the 8MByte of | |
425 | * SDRAM, we can _not_ send it to the session bus in a streaming | |
426 | * manner while we receive it. We have to receive and de-mangle the | |
427 | * full 8MByte first, only then the whole buffer contains valid data. | |
428 | */ | |
b908f067 | 429 | for (i = 0; i < NUM_BLOCKS; i++) |
695dc859 | 430 | cv_send_block_to_session_bus(sdi, i); |
b908f067 | 431 | |
d2f7c417 | 432 | sr_dev_acquisition_stop(sdi); |
b908f067 | 433 | |
b908f067 UH |
434 | return TRUE; |
435 | } | |
436 | ||
695dc859 | 437 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) |
b908f067 | 438 | { |
1644fb24 | 439 | struct dev_context *devc; |
00910580 UH |
440 | uint8_t buf[8]; |
441 | int bytes_to_write, bytes_written; | |
b908f067 | 442 | |
208c1d35 | 443 | devc = sdi->priv; |
b908f067 | 444 | |
1644fb24 | 445 | if (!devc->ftdic) { |
b172c130 | 446 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
447 | return SR_ERR_BUG; |
448 | } | |
449 | ||
00910580 | 450 | devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate); |
1644fb24 | 451 | if (devc->divcount == 0xff) { |
b172c130 | 452 | sr_err("Invalid divcount/samplerate."); |
b908f067 UH |
453 | return SR_ERR; |
454 | } | |
455 | ||
aeff7fa2 BV |
456 | if (cv_convert_trigger(sdi) != SR_OK) { |
457 | sr_err("Failed to configure trigger."); | |
014359e3 BV |
458 | return SR_ERR; |
459 | } | |
460 | ||
b908f067 | 461 | /* Fill acquisition parameters into buf[]. */ |
00910580 UH |
462 | if (devc->prof->model == CHRONOVU_LA8) { |
463 | buf[0] = devc->divcount; | |
464 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
465 | buf[2] = devc->trigger_pattern & 0xff; | |
466 | buf[3] = devc->trigger_mask & 0xff; | |
467 | bytes_to_write = 4; | |
468 | } else { | |
469 | buf[0] = devc->divcount; | |
470 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
471 | buf[2] = (devc->trigger_pattern & 0xff00) >> 8; /* LSB */ | |
472 | buf[3] = (devc->trigger_pattern & 0x00ff) >> 0; /* MSB */ | |
473 | buf[4] = (devc->trigger_mask & 0xff00) >> 8; /* LSB */ | |
474 | buf[5] = (devc->trigger_mask & 0x00ff) >> 0; /* MSB */ | |
475 | buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */ | |
476 | buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */ | |
477 | bytes_to_write = 8; | |
478 | } | |
b908f067 UH |
479 | |
480 | /* Start acquisition. */ | |
00910580 | 481 | bytes_written = cv_write(devc, buf, bytes_to_write); |
b908f067 | 482 | |
00910580 UH |
483 | if (bytes_written < 0 || bytes_written != bytes_to_write) { |
484 | sr_err("Acquisition failed to start."); | |
afc88319 | 485 | return SR_ERR; |
b908f067 UH |
486 | } |
487 | ||
bee2b016 | 488 | std_session_send_df_header(sdi); |
b908f067 | 489 | |
b908f067 | 490 | /* Time when we should be done (for detecting trigger timeouts). */ |
00910580 UH |
491 | devc->done = (devc->divcount + 1) * devc->prof->trigger_constant + |
492 | g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND); | |
1644fb24 BV |
493 | devc->block_counter = 0; |
494 | devc->trigger_found = 0; | |
b908f067 | 495 | |
b172c130 | 496 | /* Hook up a dummy handler to receive data from the device. */ |
c650d3ec | 497 | sr_session_source_add(sdi->session, -1, 0, 0, receive_data, (void *)sdi); |
b908f067 UH |
498 | |
499 | return SR_OK; | |
500 | } | |
501 | ||
695dc859 | 502 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) |
b908f067 | 503 | { |
102f1239 | 504 | sr_session_source_remove(sdi->session, -1); |
bee2b016 | 505 | std_session_send_df_end(sdi); |
b908f067 UH |
506 | |
507 | return SR_OK; | |
508 | } | |
509 | ||
dd5c48a6 | 510 | static struct sr_dev_driver chronovu_la_driver_info = { |
7b356712 UH |
511 | .name = "chronovu-la", |
512 | .longname = "ChronoVu LA8/LA16", | |
b908f067 | 513 | .api_version = 1, |
c2fdcc25 | 514 | .init = std_init, |
700d6b64 | 515 | .cleanup = std_cleanup, |
6078d2c9 | 516 | .scan = scan, |
c01bf34c | 517 | .dev_list = std_dev_list, |
3b412e3a | 518 | .dev_clear = dev_clear, |
035a1078 BV |
519 | .config_get = config_get, |
520 | .config_set = config_set, | |
a1c743fc | 521 | .config_list = config_list, |
6078d2c9 UH |
522 | .dev_open = dev_open, |
523 | .dev_close = dev_close, | |
524 | .dev_acquisition_start = dev_acquisition_start, | |
525 | .dev_acquisition_stop = dev_acquisition_stop, | |
41812aca | 526 | .context = NULL, |
b908f067 | 527 | }; |
dd5c48a6 | 528 | SR_REGISTER_DEV_DRIVER(chronovu_la_driver_info); |