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b908f067 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
b908f067 | 3 | * |
b172c130 | 4 | * Copyright (C) 2011-2014 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 | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
45e080b6 | 21 | #include "protocol.h" |
b908f067 | 22 | |
7b356712 UH |
23 | SR_PRIV struct sr_dev_driver chronovu_la_driver_info; |
24 | static struct sr_dev_driver *di = &chronovu_la_driver_info; | |
b908f067 | 25 | |
00910580 | 26 | static const int32_t hwcaps[] = { |
1bec72d2 BV |
27 | SR_CONF_LOGIC_ANALYZER, |
28 | SR_CONF_SAMPLERATE, | |
29 | SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
30 | SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
31 | }; | |
32 | ||
00910580 UH |
33 | /* The ChronoVu LA8/LA16 can have multiple VID/PID pairs. */ |
34 | static struct { | |
35 | uint16_t vid; | |
36 | uint16_t pid; | |
37 | int model; | |
38 | const char *iproduct; | |
39 | } vid_pid[] = { | |
40 | { 0x0403, 0x6001, CHRONOVU_LA8, "ChronoVu LA8" }, | |
41 | { 0x0403, 0x8867, CHRONOVU_LA8, "ChronoVu LA8" }, | |
42 | { 0x0403, 0x6001, CHRONOVU_LA16, "ChronoVu LA16" }, | |
43 | { 0x0403, 0x8867, CHRONOVU_LA16, "ChronoVu LA16" }, | |
74e5f12d UH |
44 | }; |
45 | ||
6078d2c9 | 46 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
b908f067 | 47 | |
97900799 | 48 | static void clear_helper(void *priv) |
c4f3ed4b | 49 | { |
1644fb24 | 50 | struct dev_context *devc; |
b172c130 | 51 | |
97900799 | 52 | devc = priv; |
1644fb24 | 53 | |
97900799 UH |
54 | ftdi_free(devc->ftdic); |
55 | g_free(devc->final_buf); | |
56 | } | |
c4f3ed4b | 57 | |
3b412e3a | 58 | static int dev_clear(void) |
97900799 UH |
59 | { |
60 | return std_dev_clear(di, clear_helper); | |
c4f3ed4b BV |
61 | } |
62 | ||
6078d2c9 | 63 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 64 | { |
f6beaac5 | 65 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
66 | } |
67 | ||
00910580 | 68 | static int add_device(int idx, int model, GSList **devices) |
b908f067 | 69 | { |
00910580 UH |
70 | int ret; |
71 | unsigned int i; | |
b908f067 | 72 | struct sr_dev_inst *sdi; |
1644fb24 BV |
73 | struct drv_context *drvc; |
74 | struct dev_context *devc; | |
00910580 | 75 | struct sr_channel *ch; |
c4f3ed4b | 76 | |
00910580 | 77 | ret = SR_OK; |
f3a35908 UH |
78 | |
79 | drvc = di->priv; | |
4b97c74e | 80 | |
1644fb24 | 81 | /* Allocate memory for our private device context. */ |
b172c130 | 82 | devc = g_try_malloc(sizeof(struct dev_context)); |
b908f067 UH |
83 | |
84 | /* Set some sane defaults. */ | |
00910580 UH |
85 | devc->prof = &cv_profiles[model]; |
86 | devc->ftdic = NULL; /* Will be set in the open() API call. */ | |
87 | devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */ | |
1644fb24 BV |
88 | devc->limit_msec = 0; |
89 | devc->limit_samples = 0; | |
3e9b7f9c | 90 | devc->cb_data = NULL; |
1644fb24 BV |
91 | memset(devc->mangled_buf, 0, BS); |
92 | devc->final_buf = NULL; | |
00910580 UH |
93 | devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */ |
94 | devc->trigger_mask = 0x0000; /* All channels: "don't care". */ | |
95 | devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */ | |
1644fb24 BV |
96 | devc->trigger_found = 0; |
97 | devc->done = 0; | |
98 | devc->block_counter = 0; | |
00910580 UH |
99 | devc->divcount = 0; |
100 | devc->usb_vid = vid_pid[idx].vid; | |
101 | devc->usb_pid = vid_pid[idx].pid; | |
102 | memset(devc->samplerates, 0, sizeof(uint64_t) * 255); | |
b908f067 UH |
103 | |
104 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 105 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
b172c130 | 106 | sr_err("Failed to allocate memory for sample buffer."); |
00910580 | 107 | ret = SR_ERR_MALLOC; |
1644fb24 | 108 | goto err_free_devc; |
b908f067 UH |
109 | } |
110 | ||
00910580 UH |
111 | /* We now know the device, set its max. samplerate as default. */ |
112 | devc->cur_samplerate = devc->prof->max_samplerate; | |
b908f067 UH |
113 | |
114 | /* Register the device with libsigrok. */ | |
115 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
00910580 | 116 | "ChronoVu", devc->prof->modelname, NULL); |
b908f067 | 117 | if (!sdi) { |
b172c130 | 118 | sr_err("Failed to create device instance."); |
00910580 UH |
119 | ret = SR_ERR; |
120 | goto err_free_final_buf; | |
b908f067 | 121 | } |
f3a35908 | 122 | sdi->driver = di; |
1644fb24 | 123 | sdi->priv = devc; |
b908f067 | 124 | |
00910580 | 125 | for (i = 0; i < devc->prof->num_channels; i++) { |
3f239f08 | 126 | if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, |
00910580 UH |
127 | cv_channel_names[i]))) { |
128 | ret = SR_ERR; | |
129 | goto err_free_dev_inst; | |
130 | } | |
ba7dd8bb | 131 | sdi->channels = g_slist_append(sdi->channels, ch); |
87ca93c5 BV |
132 | } |
133 | ||
00910580 | 134 | *devices = g_slist_append(*devices, sdi); |
1644fb24 | 135 | drvc->instances = g_slist_append(drvc->instances, sdi); |
b908f067 | 136 | |
00910580 | 137 | return SR_OK; |
b908f067 | 138 | |
00910580 UH |
139 | err_free_dev_inst: |
140 | sr_dev_inst_free(sdi); | |
b908f067 | 141 | err_free_final_buf: |
1644fb24 BV |
142 | g_free(devc->final_buf); |
143 | err_free_devc: | |
144 | g_free(devc); | |
b908f067 | 145 | |
00910580 UH |
146 | return ret; |
147 | } | |
148 | ||
149 | static GSList *scan(GSList *options) | |
150 | { | |
151 | int ret; | |
152 | unsigned int i; | |
153 | GSList *devices; | |
154 | struct ftdi_context *ftdic; | |
155 | ||
156 | (void)options; | |
157 | ||
158 | devices = NULL; | |
159 | ||
160 | /* Allocate memory for the FTDI context and initialize it. */ | |
161 | if (!(ftdic = ftdi_new())) { | |
162 | sr_err("Failed to initialize libftdi."); | |
163 | return NULL; | |
164 | } | |
165 | ||
166 | /* Check for LA8 and/or LA16 devices with various VID/PIDs. */ | |
167 | for (i = 0; i < ARRAY_SIZE(vid_pid); i++) { | |
168 | ret = ftdi_usb_open_desc(ftdic, vid_pid[i].vid, | |
169 | vid_pid[i].pid, vid_pid[i].iproduct, NULL); | |
170 | if (ret < 0) | |
171 | continue; /* No device found. */ | |
172 | ||
173 | sr_dbg("Found %s device (%04x:%04x).", | |
174 | vid_pid[i].iproduct, vid_pid[i].vid, vid_pid[i].pid); | |
175 | ||
176 | if ((ret = add_device(i, vid_pid[i].model, &devices)) < 0) | |
177 | sr_dbg("Failed to add device: %d.", ret); | |
178 | ||
179 | if ((ret = ftdi_usb_close(ftdic)) < 0) | |
180 | sr_dbg("Failed to close FTDI device (%d): %s.", | |
181 | ret, ftdi_get_error_string(ftdic)); | |
182 | } | |
183 | ||
184 | /* Close USB device, deinitialize and free the FTDI context. */ | |
185 | ftdi_free(ftdic); | |
186 | ftdic = NULL; | |
187 | ||
188 | return devices; | |
b908f067 UH |
189 | } |
190 | ||
6078d2c9 | 191 | static GSList *dev_list(void) |
811deee4 | 192 | { |
0e94d524 | 193 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
194 | } |
195 | ||
6078d2c9 | 196 | static int dev_open(struct sr_dev_inst *sdi) |
b908f067 | 197 | { |
1644fb24 | 198 | struct dev_context *devc; |
25a0f108 | 199 | int ret; |
b908f067 | 200 | |
00910580 UH |
201 | ret = SR_ERR; |
202 | ||
b172c130 | 203 | if (!(devc = sdi->priv)) |
b908f067 | 204 | return SR_ERR_BUG; |
b908f067 | 205 | |
00910580 UH |
206 | /* Allocate memory for the FTDI context and initialize it. */ |
207 | if (!(devc->ftdic = ftdi_new())) { | |
208 | sr_err("Failed to initialize libftdi."); | |
209 | return SR_ERR; | |
210 | } | |
211 | ||
212 | sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname, | |
213 | devc->usb_vid, devc->usb_pid); | |
b908f067 UH |
214 | |
215 | /* Open the device. */ | |
00910580 UH |
216 | if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid, |
217 | devc->usb_pid, devc->prof->iproduct, NULL)) < 0) { | |
b172c130 UH |
218 | sr_err("Failed to open FTDI device (%d): %s.", |
219 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 220 | goto err_ftdi_free; |
b908f067 | 221 | } |
f3a35908 | 222 | sr_dbg("Device opened successfully."); |
b908f067 UH |
223 | |
224 | /* Purge RX/TX buffers in the FTDI chip. */ | |
1644fb24 | 225 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { |
b172c130 UH |
226 | sr_err("Failed to purge FTDI buffers (%d): %s.", |
227 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 228 | goto err_ftdi_free; |
b908f067 | 229 | } |
f3a35908 | 230 | sr_dbg("FTDI buffers purged successfully."); |
b908f067 UH |
231 | |
232 | /* Enable flow control in the FTDI chip. */ | |
1644fb24 | 233 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
b172c130 UH |
234 | sr_err("Failed to enable FTDI flow control (%d): %s.", |
235 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 236 | goto err_ftdi_free; |
b908f067 | 237 | } |
f3a35908 | 238 | sr_dbg("FTDI flow control enabled successfully."); |
b908f067 UH |
239 | |
240 | /* Wait 100ms. */ | |
241 | g_usleep(100 * 1000); | |
242 | ||
243 | sdi->status = SR_ST_ACTIVE; | |
244 | ||
245 | return SR_OK; | |
246 | ||
00910580 UH |
247 | err_ftdi_free: |
248 | ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */ | |
249 | devc->ftdic = NULL; | |
250 | return ret; | |
b908f067 UH |
251 | } |
252 | ||
6078d2c9 | 253 | static int dev_close(struct sr_dev_inst *sdi) |
b908f067 | 254 | { |
00910580 | 255 | int ret; |
1644fb24 | 256 | struct dev_context *devc; |
b908f067 | 257 | |
00910580 UH |
258 | if (sdi->status != SR_ST_ACTIVE) |
259 | return SR_OK; | |
b908f067 | 260 | |
00910580 | 261 | devc = sdi->priv; |
b908f067 | 262 | |
00910580 UH |
263 | if (devc->ftdic && (ret = ftdi_usb_close(devc->ftdic)) < 0) |
264 | sr_err("Failed to close FTDI device (%d): %s.", | |
265 | ret, ftdi_get_error_string(devc->ftdic)); | |
b908f067 UH |
266 | sdi->status = SR_ST_INACTIVE; |
267 | ||
b908f067 UH |
268 | return SR_OK; |
269 | } | |
270 | ||
6078d2c9 | 271 | static int cleanup(void) |
b908f067 | 272 | { |
3b412e3a | 273 | return dev_clear(); |
b908f067 UH |
274 | } |
275 | ||
8f996b89 | 276 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 277 | const struct sr_channel_group *cg) |
b908f067 | 278 | { |
1644fb24 | 279 | struct dev_context *devc; |
b908f067 | 280 | |
53b4680f | 281 | (void)cg; |
8f996b89 | 282 | |
035a1078 | 283 | switch (id) { |
123e1313 | 284 | case SR_CONF_SAMPLERATE: |
b172c130 UH |
285 | if (!sdi || !(devc = sdi->priv)) |
286 | return SR_ERR_BUG; | |
287 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
b908f067 | 288 | break; |
cfe8a84d | 289 | default: |
bd6fbf62 | 290 | return SR_ERR_NA; |
b908f067 UH |
291 | } |
292 | ||
6a2761fd | 293 | return SR_OK; |
b908f067 UH |
294 | } |
295 | ||
8f996b89 | 296 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 297 | const struct sr_channel_group *cg) |
b908f067 | 298 | { |
1644fb24 | 299 | struct dev_context *devc; |
b908f067 | 300 | |
53b4680f | 301 | (void)cg; |
8f996b89 | 302 | |
e73ffd42 BV |
303 | if (sdi->status != SR_ST_ACTIVE) |
304 | return SR_ERR_DEV_CLOSED; | |
305 | ||
b172c130 | 306 | if (!(devc = sdi->priv)) |
b908f067 | 307 | return SR_ERR_BUG; |
b908f067 | 308 | |
035a1078 | 309 | switch (id) { |
1953564a | 310 | case SR_CONF_SAMPLERATE: |
00910580 | 311 | if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0) |
b908f067 | 312 | return SR_ERR; |
b908f067 | 313 | break; |
1953564a | 314 | case SR_CONF_LIMIT_MSEC: |
b172c130 UH |
315 | if (g_variant_get_uint64(data) == 0) |
316 | return SR_ERR_ARG; | |
1bec72d2 | 317 | devc->limit_msec = g_variant_get_uint64(data); |
b908f067 | 318 | break; |
1953564a | 319 | case SR_CONF_LIMIT_SAMPLES: |
b172c130 UH |
320 | if (g_variant_get_uint64(data) == 0) |
321 | return SR_ERR_ARG; | |
1bec72d2 | 322 | devc->limit_samples = g_variant_get_uint64(data); |
b908f067 UH |
323 | break; |
324 | default: | |
bd6fbf62 | 325 | return SR_ERR_NA; |
b908f067 UH |
326 | } |
327 | ||
328 | return SR_OK; | |
329 | } | |
330 | ||
8f996b89 | 331 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 332 | const struct sr_channel_group *cg) |
a1c743fc | 333 | { |
f0de2dd0 | 334 | GVariant *gvar, *grange[2]; |
1bec72d2 | 335 | GVariantBuilder gvb; |
00910580 | 336 | struct dev_context *devc; |
a1c743fc | 337 | |
53b4680f | 338 | (void)cg; |
a1c743fc BV |
339 | |
340 | switch (key) { | |
9a6517d1 | 341 | case SR_CONF_DEVICE_OPTIONS: |
1bec72d2 | 342 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
00910580 | 343 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); |
9a6517d1 | 344 | break; |
a1c743fc | 345 | case SR_CONF_SAMPLERATE: |
00910580 UH |
346 | if (!sdi || !sdi->priv || !(devc = sdi->priv)) |
347 | return SR_ERR_BUG; | |
348 | cv_fill_samplerates_if_needed(sdi); | |
1bec72d2 BV |
349 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
350 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
00910580 UH |
351 | devc->samplerates, |
352 | ARRAY_SIZE(devc->samplerates), | |
1bec72d2 BV |
353 | sizeof(uint64_t)); |
354 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
355 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 356 | break; |
f0de2dd0 BV |
357 | case SR_CONF_LIMIT_SAMPLES: |
358 | grange[0] = g_variant_new_uint64(0); | |
359 | grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES); | |
360 | *data = g_variant_new_tuple(grange, 2); | |
361 | break; | |
c50277a6 | 362 | case SR_CONF_TRIGGER_TYPE: |
00910580 UH |
363 | if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof) |
364 | return SR_ERR_BUG; | |
365 | *data = g_variant_new_string(devc->prof->trigger_type); | |
c50277a6 | 366 | break; |
a1c743fc | 367 | default: |
bd6fbf62 | 368 | return SR_ERR_NA; |
a1c743fc BV |
369 | } |
370 | ||
371 | return SR_OK; | |
372 | } | |
373 | ||
b908f067 UH |
374 | static int receive_data(int fd, int revents, void *cb_data) |
375 | { | |
376 | int i, ret; | |
377 | struct sr_dev_inst *sdi; | |
1644fb24 | 378 | struct dev_context *devc; |
b908f067 | 379 | |
b908f067 UH |
380 | (void)fd; |
381 | (void)revents; | |
382 | ||
383 | if (!(sdi = cb_data)) { | |
b172c130 | 384 | sr_err("cb_data was NULL."); |
b908f067 UH |
385 | return FALSE; |
386 | } | |
387 | ||
1644fb24 | 388 | if (!(devc = sdi->priv)) { |
b172c130 | 389 | sr_err("sdi->priv was NULL."); |
b908f067 UH |
390 | return FALSE; |
391 | } | |
392 | ||
1644fb24 | 393 | if (!devc->ftdic) { |
b172c130 | 394 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
395 | return FALSE; |
396 | } | |
397 | ||
398 | /* Get one block of data. */ | |
b172c130 UH |
399 | if ((ret = cv_read_block(devc)) < 0) { |
400 | sr_err("Failed to read data block: %d.", ret); | |
6078d2c9 | 401 | dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
402 | return FALSE; |
403 | } | |
404 | ||
405 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
406 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
407 | devc->block_counter++; | |
b908f067 UH |
408 | return TRUE; |
409 | } | |
410 | ||
f3a35908 | 411 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 | 412 | |
b0efc84e UH |
413 | /* |
414 | * All data was received and demangled, send it to the session bus. | |
415 | * | |
416 | * Note: Due to the method how data is spread across the 8MByte of | |
417 | * SDRAM, we can _not_ send it to the session bus in a streaming | |
418 | * manner while we receive it. We have to receive and de-mangle the | |
419 | * full 8MByte first, only then the whole buffer contains valid data. | |
420 | */ | |
b908f067 | 421 | for (i = 0; i < NUM_BLOCKS; i++) |
b172c130 | 422 | cv_send_block_to_session_bus(devc, i); |
b908f067 | 423 | |
6078d2c9 | 424 | dev_acquisition_stop(sdi, sdi); |
b908f067 | 425 | |
b908f067 UH |
426 | return TRUE; |
427 | } | |
428 | ||
6078d2c9 | 429 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 430 | { |
1644fb24 | 431 | struct dev_context *devc; |
00910580 UH |
432 | uint8_t buf[8]; |
433 | int bytes_to_write, bytes_written; | |
b908f067 | 434 | |
e73ffd42 BV |
435 | if (sdi->status != SR_ST_ACTIVE) |
436 | return SR_ERR_DEV_CLOSED; | |
437 | ||
1644fb24 | 438 | if (!(devc = sdi->priv)) { |
b172c130 | 439 | sr_err("sdi->priv was NULL."); |
b908f067 UH |
440 | return SR_ERR_BUG; |
441 | } | |
442 | ||
1644fb24 | 443 | if (!devc->ftdic) { |
b172c130 | 444 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
445 | return SR_ERR_BUG; |
446 | } | |
447 | ||
00910580 | 448 | devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate); |
1644fb24 | 449 | if (devc->divcount == 0xff) { |
b172c130 | 450 | sr_err("Invalid divcount/samplerate."); |
b908f067 UH |
451 | return SR_ERR; |
452 | } | |
453 | ||
b172c130 | 454 | if (cv_configure_channels(sdi) != SR_OK) { |
ba7dd8bb | 455 | sr_err("Failed to configure channels."); |
014359e3 BV |
456 | return SR_ERR; |
457 | } | |
458 | ||
b908f067 | 459 | /* Fill acquisition parameters into buf[]. */ |
00910580 UH |
460 | if (devc->prof->model == CHRONOVU_LA8) { |
461 | buf[0] = devc->divcount; | |
462 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
463 | buf[2] = devc->trigger_pattern & 0xff; | |
464 | buf[3] = devc->trigger_mask & 0xff; | |
465 | bytes_to_write = 4; | |
466 | } else { | |
467 | buf[0] = devc->divcount; | |
468 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
469 | buf[2] = (devc->trigger_pattern & 0xff00) >> 8; /* LSB */ | |
470 | buf[3] = (devc->trigger_pattern & 0x00ff) >> 0; /* MSB */ | |
471 | buf[4] = (devc->trigger_mask & 0xff00) >> 8; /* LSB */ | |
472 | buf[5] = (devc->trigger_mask & 0x00ff) >> 0; /* MSB */ | |
473 | buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */ | |
474 | buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */ | |
475 | bytes_to_write = 8; | |
476 | } | |
b908f067 UH |
477 | |
478 | /* Start acquisition. */ | |
00910580 | 479 | bytes_written = cv_write(devc, buf, bytes_to_write); |
b908f067 | 480 | |
00910580 UH |
481 | if (bytes_written < 0 || bytes_written != bytes_to_write) { |
482 | sr_err("Acquisition failed to start."); | |
afc88319 | 483 | return SR_ERR; |
b908f067 UH |
484 | } |
485 | ||
4afdfd46 | 486 | sr_dbg("Hardware acquisition started successfully."); |
b908f067 | 487 | |
3e9b7f9c | 488 | devc->cb_data = cb_data; |
b908f067 UH |
489 | |
490 | /* Send header packet to the session bus. */ | |
29a27196 | 491 | std_session_send_df_header(cb_data, LOG_PREFIX); |
b908f067 | 492 | |
b908f067 | 493 | /* Time when we should be done (for detecting trigger timeouts). */ |
00910580 UH |
494 | devc->done = (devc->divcount + 1) * devc->prof->trigger_constant + |
495 | g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND); | |
1644fb24 BV |
496 | devc->block_counter = 0; |
497 | devc->trigger_found = 0; | |
b908f067 | 498 | |
b172c130 | 499 | /* Hook up a dummy handler to receive data from the device. */ |
3ffb6964 | 500 | sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); |
b908f067 UH |
501 | |
502 | return SR_OK; | |
503 | } | |
504 | ||
6078d2c9 | 505 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 506 | { |
b908f067 UH |
507 | struct sr_datafeed_packet packet; |
508 | ||
afc88319 | 509 | (void)sdi; |
b908f067 | 510 | |
f3a35908 | 511 | sr_dbg("Stopping acquisition."); |
7021f985 BV |
512 | sr_source_remove(-1); |
513 | ||
b908f067 | 514 | /* Send end packet to the session bus. */ |
f3a35908 | 515 | sr_dbg("Sending SR_DF_END."); |
b908f067 UH |
516 | packet.type = SR_DF_END; |
517 | sr_session_send(cb_data, &packet); | |
518 | ||
519 | return SR_OK; | |
520 | } | |
521 | ||
7b356712 UH |
522 | SR_PRIV struct sr_dev_driver chronovu_la_driver_info = { |
523 | .name = "chronovu-la", | |
524 | .longname = "ChronoVu LA8/LA16", | |
b908f067 | 525 | .api_version = 1, |
6078d2c9 UH |
526 | .init = init, |
527 | .cleanup = cleanup, | |
528 | .scan = scan, | |
529 | .dev_list = dev_list, | |
3b412e3a | 530 | .dev_clear = dev_clear, |
035a1078 BV |
531 | .config_get = config_get, |
532 | .config_set = config_set, | |
a1c743fc | 533 | .config_list = config_list, |
6078d2c9 UH |
534 | .dev_open = dev_open, |
535 | .dev_close = dev_close, | |
536 | .dev_acquisition_start = dev_acquisition_start, | |
537 | .dev_acquisition_stop = dev_acquisition_stop, | |
1644fb24 | 538 | .priv = NULL, |
b908f067 | 539 | }; |