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Commit | Line | Data |
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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, | |
38d32464 | 29 | SR_CONF_TRIGGER_TYPE, |
1bec72d2 BV |
30 | SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */ |
31 | SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
32 | }; | |
33 | ||
00910580 UH |
34 | /* The ChronoVu LA8/LA16 can have multiple VID/PID pairs. */ |
35 | static struct { | |
36 | uint16_t vid; | |
37 | uint16_t pid; | |
38 | int model; | |
39 | const char *iproduct; | |
40 | } vid_pid[] = { | |
41 | { 0x0403, 0x6001, CHRONOVU_LA8, "ChronoVu LA8" }, | |
42 | { 0x0403, 0x8867, CHRONOVU_LA8, "ChronoVu LA8" }, | |
43 | { 0x0403, 0x6001, CHRONOVU_LA16, "ChronoVu LA16" }, | |
44 | { 0x0403, 0x8867, CHRONOVU_LA16, "ChronoVu LA16" }, | |
74e5f12d UH |
45 | }; |
46 | ||
6078d2c9 | 47 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
b908f067 | 48 | |
97900799 | 49 | static void clear_helper(void *priv) |
c4f3ed4b | 50 | { |
1644fb24 | 51 | struct dev_context *devc; |
b172c130 | 52 | |
97900799 | 53 | devc = priv; |
1644fb24 | 54 | |
97900799 UH |
55 | ftdi_free(devc->ftdic); |
56 | g_free(devc->final_buf); | |
57 | } | |
c4f3ed4b | 58 | |
3b412e3a | 59 | static int dev_clear(void) |
97900799 UH |
60 | { |
61 | return std_dev_clear(di, clear_helper); | |
c4f3ed4b BV |
62 | } |
63 | ||
6078d2c9 | 64 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 65 | { |
f6beaac5 | 66 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
67 | } |
68 | ||
00910580 | 69 | static int add_device(int idx, int model, GSList **devices) |
b908f067 | 70 | { |
00910580 UH |
71 | int ret; |
72 | unsigned int i; | |
b908f067 | 73 | struct sr_dev_inst *sdi; |
1644fb24 BV |
74 | struct drv_context *drvc; |
75 | struct dev_context *devc; | |
00910580 | 76 | struct sr_channel *ch; |
c4f3ed4b | 77 | |
00910580 | 78 | ret = SR_OK; |
f3a35908 UH |
79 | |
80 | drvc = di->priv; | |
4b97c74e | 81 | |
1644fb24 | 82 | /* Allocate memory for our private device context. */ |
b172c130 | 83 | devc = g_try_malloc(sizeof(struct dev_context)); |
b908f067 UH |
84 | |
85 | /* Set some sane defaults. */ | |
00910580 UH |
86 | devc->prof = &cv_profiles[model]; |
87 | devc->ftdic = NULL; /* Will be set in the open() API call. */ | |
88 | devc->cur_samplerate = 0; /* Set later (different for LA8/LA16). */ | |
1644fb24 BV |
89 | devc->limit_msec = 0; |
90 | devc->limit_samples = 0; | |
3e9b7f9c | 91 | devc->cb_data = NULL; |
1644fb24 BV |
92 | memset(devc->mangled_buf, 0, BS); |
93 | devc->final_buf = NULL; | |
00910580 UH |
94 | devc->trigger_pattern = 0x0000; /* Irrelevant, see trigger_mask. */ |
95 | devc->trigger_mask = 0x0000; /* All channels: "don't care". */ | |
96 | devc->trigger_edgemask = 0x0000; /* All channels: "state triggered". */ | |
1644fb24 BV |
97 | devc->trigger_found = 0; |
98 | devc->done = 0; | |
99 | devc->block_counter = 0; | |
00910580 UH |
100 | devc->divcount = 0; |
101 | devc->usb_vid = vid_pid[idx].vid; | |
102 | devc->usb_pid = vid_pid[idx].pid; | |
103 | memset(devc->samplerates, 0, sizeof(uint64_t) * 255); | |
b908f067 UH |
104 | |
105 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 106 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
b172c130 | 107 | sr_err("Failed to allocate memory for sample buffer."); |
00910580 | 108 | ret = SR_ERR_MALLOC; |
1644fb24 | 109 | goto err_free_devc; |
b908f067 UH |
110 | } |
111 | ||
00910580 UH |
112 | /* We now know the device, set its max. samplerate as default. */ |
113 | devc->cur_samplerate = devc->prof->max_samplerate; | |
b908f067 UH |
114 | |
115 | /* Register the device with libsigrok. */ | |
116 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
00910580 | 117 | "ChronoVu", devc->prof->modelname, NULL); |
b908f067 | 118 | if (!sdi) { |
b172c130 | 119 | sr_err("Failed to create device instance."); |
00910580 UH |
120 | ret = SR_ERR; |
121 | goto err_free_final_buf; | |
b908f067 | 122 | } |
f3a35908 | 123 | sdi->driver = di; |
1644fb24 | 124 | sdi->priv = devc; |
b908f067 | 125 | |
00910580 | 126 | for (i = 0; i < devc->prof->num_channels; i++) { |
3f239f08 | 127 | if (!(ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, |
00910580 UH |
128 | cv_channel_names[i]))) { |
129 | ret = SR_ERR; | |
130 | goto err_free_dev_inst; | |
131 | } | |
ba7dd8bb | 132 | sdi->channels = g_slist_append(sdi->channels, ch); |
87ca93c5 BV |
133 | } |
134 | ||
00910580 | 135 | *devices = g_slist_append(*devices, sdi); |
1644fb24 | 136 | drvc->instances = g_slist_append(drvc->instances, sdi); |
b908f067 | 137 | |
00910580 | 138 | return SR_OK; |
b908f067 | 139 | |
00910580 UH |
140 | err_free_dev_inst: |
141 | sr_dev_inst_free(sdi); | |
b908f067 | 142 | err_free_final_buf: |
1644fb24 BV |
143 | g_free(devc->final_buf); |
144 | err_free_devc: | |
145 | g_free(devc); | |
b908f067 | 146 | |
00910580 UH |
147 | return ret; |
148 | } | |
149 | ||
150 | static GSList *scan(GSList *options) | |
151 | { | |
152 | int ret; | |
153 | unsigned int i; | |
154 | GSList *devices; | |
155 | struct ftdi_context *ftdic; | |
156 | ||
157 | (void)options; | |
158 | ||
159 | devices = NULL; | |
160 | ||
161 | /* Allocate memory for the FTDI context and initialize it. */ | |
162 | if (!(ftdic = ftdi_new())) { | |
163 | sr_err("Failed to initialize libftdi."); | |
164 | return NULL; | |
165 | } | |
166 | ||
167 | /* Check for LA8 and/or LA16 devices with various VID/PIDs. */ | |
168 | for (i = 0; i < ARRAY_SIZE(vid_pid); i++) { | |
169 | ret = ftdi_usb_open_desc(ftdic, vid_pid[i].vid, | |
170 | vid_pid[i].pid, vid_pid[i].iproduct, NULL); | |
cfe01d06 UH |
171 | /* Show errors other than "device not found". */ |
172 | if (ret < 0 && ret != -3) | |
173 | sr_dbg("Error finding/opening device (%d): %s.", | |
174 | ret, ftdi_get_error_string(ftdic)); | |
00910580 | 175 | if (ret < 0) |
cfe01d06 | 176 | continue; /* No device found, or not usable. */ |
00910580 UH |
177 | |
178 | sr_dbg("Found %s device (%04x:%04x).", | |
179 | vid_pid[i].iproduct, vid_pid[i].vid, vid_pid[i].pid); | |
180 | ||
181 | if ((ret = add_device(i, vid_pid[i].model, &devices)) < 0) | |
182 | sr_dbg("Failed to add device: %d.", ret); | |
183 | ||
184 | if ((ret = ftdi_usb_close(ftdic)) < 0) | |
185 | sr_dbg("Failed to close FTDI device (%d): %s.", | |
186 | ret, ftdi_get_error_string(ftdic)); | |
187 | } | |
188 | ||
189 | /* Close USB device, deinitialize and free the FTDI context. */ | |
190 | ftdi_free(ftdic); | |
191 | ftdic = NULL; | |
192 | ||
193 | return devices; | |
b908f067 UH |
194 | } |
195 | ||
6078d2c9 | 196 | static GSList *dev_list(void) |
811deee4 | 197 | { |
0e94d524 | 198 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
199 | } |
200 | ||
6078d2c9 | 201 | static int dev_open(struct sr_dev_inst *sdi) |
b908f067 | 202 | { |
1644fb24 | 203 | struct dev_context *devc; |
25a0f108 | 204 | int ret; |
b908f067 | 205 | |
00910580 UH |
206 | ret = SR_ERR; |
207 | ||
b172c130 | 208 | if (!(devc = sdi->priv)) |
b908f067 | 209 | return SR_ERR_BUG; |
b908f067 | 210 | |
00910580 UH |
211 | /* Allocate memory for the FTDI context and initialize it. */ |
212 | if (!(devc->ftdic = ftdi_new())) { | |
213 | sr_err("Failed to initialize libftdi."); | |
214 | return SR_ERR; | |
215 | } | |
216 | ||
217 | sr_dbg("Opening %s device (%04x:%04x).", devc->prof->modelname, | |
218 | devc->usb_vid, devc->usb_pid); | |
b908f067 UH |
219 | |
220 | /* Open the device. */ | |
00910580 UH |
221 | if ((ret = ftdi_usb_open_desc(devc->ftdic, devc->usb_vid, |
222 | devc->usb_pid, devc->prof->iproduct, NULL)) < 0) { | |
b172c130 UH |
223 | sr_err("Failed to open FTDI device (%d): %s.", |
224 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 225 | goto err_ftdi_free; |
b908f067 | 226 | } |
f3a35908 | 227 | sr_dbg("Device opened successfully."); |
b908f067 UH |
228 | |
229 | /* Purge RX/TX buffers in the FTDI chip. */ | |
1644fb24 | 230 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { |
b172c130 UH |
231 | sr_err("Failed to purge FTDI buffers (%d): %s.", |
232 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 233 | goto err_ftdi_free; |
b908f067 | 234 | } |
f3a35908 | 235 | sr_dbg("FTDI buffers purged successfully."); |
b908f067 UH |
236 | |
237 | /* Enable flow control in the FTDI chip. */ | |
1644fb24 | 238 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
b172c130 UH |
239 | sr_err("Failed to enable FTDI flow control (%d): %s.", |
240 | ret, ftdi_get_error_string(devc->ftdic)); | |
00910580 | 241 | goto err_ftdi_free; |
b908f067 | 242 | } |
f3a35908 | 243 | sr_dbg("FTDI flow control enabled successfully."); |
b908f067 UH |
244 | |
245 | /* Wait 100ms. */ | |
246 | g_usleep(100 * 1000); | |
247 | ||
248 | sdi->status = SR_ST_ACTIVE; | |
249 | ||
250 | return SR_OK; | |
251 | ||
00910580 UH |
252 | err_ftdi_free: |
253 | ftdi_free(devc->ftdic); /* Close device (if open), free FTDI context. */ | |
254 | devc->ftdic = NULL; | |
255 | return ret; | |
b908f067 UH |
256 | } |
257 | ||
6078d2c9 | 258 | static int dev_close(struct sr_dev_inst *sdi) |
b908f067 | 259 | { |
00910580 | 260 | int ret; |
1644fb24 | 261 | struct dev_context *devc; |
b908f067 | 262 | |
00910580 UH |
263 | if (sdi->status != SR_ST_ACTIVE) |
264 | return SR_OK; | |
b908f067 | 265 | |
00910580 | 266 | devc = sdi->priv; |
b908f067 | 267 | |
00910580 UH |
268 | if (devc->ftdic && (ret = ftdi_usb_close(devc->ftdic)) < 0) |
269 | sr_err("Failed to close FTDI device (%d): %s.", | |
270 | ret, ftdi_get_error_string(devc->ftdic)); | |
b908f067 UH |
271 | sdi->status = SR_ST_INACTIVE; |
272 | ||
b908f067 UH |
273 | return SR_OK; |
274 | } | |
275 | ||
6078d2c9 | 276 | static int cleanup(void) |
b908f067 | 277 | { |
3b412e3a | 278 | return dev_clear(); |
b908f067 UH |
279 | } |
280 | ||
8f996b89 | 281 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 282 | const struct sr_channel_group *cg) |
b908f067 | 283 | { |
1644fb24 | 284 | struct dev_context *devc; |
b908f067 | 285 | |
53b4680f | 286 | (void)cg; |
8f996b89 | 287 | |
035a1078 | 288 | switch (id) { |
123e1313 | 289 | case SR_CONF_SAMPLERATE: |
b172c130 UH |
290 | if (!sdi || !(devc = sdi->priv)) |
291 | return SR_ERR_BUG; | |
292 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
b908f067 | 293 | break; |
cfe8a84d | 294 | default: |
bd6fbf62 | 295 | return SR_ERR_NA; |
b908f067 UH |
296 | } |
297 | ||
6a2761fd | 298 | return SR_OK; |
b908f067 UH |
299 | } |
300 | ||
8f996b89 | 301 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
53b4680f | 302 | const struct sr_channel_group *cg) |
b908f067 | 303 | { |
1644fb24 | 304 | struct dev_context *devc; |
b908f067 | 305 | |
53b4680f | 306 | (void)cg; |
8f996b89 | 307 | |
e73ffd42 BV |
308 | if (sdi->status != SR_ST_ACTIVE) |
309 | return SR_ERR_DEV_CLOSED; | |
310 | ||
b172c130 | 311 | if (!(devc = sdi->priv)) |
b908f067 | 312 | return SR_ERR_BUG; |
b908f067 | 313 | |
035a1078 | 314 | switch (id) { |
1953564a | 315 | case SR_CONF_SAMPLERATE: |
00910580 | 316 | if (cv_set_samplerate(sdi, g_variant_get_uint64(data)) < 0) |
b908f067 | 317 | return SR_ERR; |
b908f067 | 318 | break; |
1953564a | 319 | case SR_CONF_LIMIT_MSEC: |
b172c130 UH |
320 | if (g_variant_get_uint64(data) == 0) |
321 | return SR_ERR_ARG; | |
1bec72d2 | 322 | devc->limit_msec = g_variant_get_uint64(data); |
b908f067 | 323 | break; |
1953564a | 324 | case SR_CONF_LIMIT_SAMPLES: |
b172c130 UH |
325 | if (g_variant_get_uint64(data) == 0) |
326 | return SR_ERR_ARG; | |
1bec72d2 | 327 | devc->limit_samples = g_variant_get_uint64(data); |
b908f067 UH |
328 | break; |
329 | default: | |
bd6fbf62 | 330 | return SR_ERR_NA; |
b908f067 UH |
331 | } |
332 | ||
333 | return SR_OK; | |
334 | } | |
335 | ||
8f996b89 | 336 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
53b4680f | 337 | const struct sr_channel_group *cg) |
a1c743fc | 338 | { |
f0de2dd0 | 339 | GVariant *gvar, *grange[2]; |
1bec72d2 | 340 | GVariantBuilder gvb; |
00910580 | 341 | struct dev_context *devc; |
a1c743fc | 342 | |
53b4680f | 343 | (void)cg; |
a1c743fc BV |
344 | |
345 | switch (key) { | |
9a6517d1 | 346 | case SR_CONF_DEVICE_OPTIONS: |
1bec72d2 | 347 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
00910580 | 348 | hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t)); |
9a6517d1 | 349 | break; |
a1c743fc | 350 | case SR_CONF_SAMPLERATE: |
00910580 UH |
351 | if (!sdi || !sdi->priv || !(devc = sdi->priv)) |
352 | return SR_ERR_BUG; | |
353 | cv_fill_samplerates_if_needed(sdi); | |
1bec72d2 BV |
354 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
355 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
00910580 UH |
356 | devc->samplerates, |
357 | ARRAY_SIZE(devc->samplerates), | |
1bec72d2 BV |
358 | sizeof(uint64_t)); |
359 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
360 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 361 | break; |
f0de2dd0 | 362 | case SR_CONF_LIMIT_SAMPLES: |
69bdcd8b UH |
363 | if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof) |
364 | return SR_ERR_BUG; | |
f0de2dd0 | 365 | grange[0] = g_variant_new_uint64(0); |
69bdcd8b UH |
366 | if (devc->prof->model == CHRONOVU_LA8) |
367 | grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES); | |
368 | else | |
369 | grange[1] = g_variant_new_uint64(MAX_NUM_SAMPLES / 2); | |
f0de2dd0 BV |
370 | *data = g_variant_new_tuple(grange, 2); |
371 | break; | |
c50277a6 | 372 | case SR_CONF_TRIGGER_TYPE: |
00910580 UH |
373 | if (!sdi || !sdi->priv || !(devc = sdi->priv) || !devc->prof) |
374 | return SR_ERR_BUG; | |
375 | *data = g_variant_new_string(devc->prof->trigger_type); | |
c50277a6 | 376 | break; |
a1c743fc | 377 | default: |
bd6fbf62 | 378 | return SR_ERR_NA; |
a1c743fc BV |
379 | } |
380 | ||
381 | return SR_OK; | |
382 | } | |
383 | ||
b908f067 UH |
384 | static int receive_data(int fd, int revents, void *cb_data) |
385 | { | |
386 | int i, ret; | |
387 | struct sr_dev_inst *sdi; | |
1644fb24 | 388 | struct dev_context *devc; |
b908f067 | 389 | |
b908f067 UH |
390 | (void)fd; |
391 | (void)revents; | |
392 | ||
393 | if (!(sdi = cb_data)) { | |
b172c130 | 394 | sr_err("cb_data was NULL."); |
b908f067 UH |
395 | return FALSE; |
396 | } | |
397 | ||
1644fb24 | 398 | if (!(devc = sdi->priv)) { |
b172c130 | 399 | sr_err("sdi->priv was NULL."); |
b908f067 UH |
400 | return FALSE; |
401 | } | |
402 | ||
1644fb24 | 403 | if (!devc->ftdic) { |
b172c130 | 404 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
405 | return FALSE; |
406 | } | |
407 | ||
408 | /* Get one block of data. */ | |
b172c130 UH |
409 | if ((ret = cv_read_block(devc)) < 0) { |
410 | sr_err("Failed to read data block: %d.", ret); | |
6078d2c9 | 411 | dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
412 | return FALSE; |
413 | } | |
414 | ||
415 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
416 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
417 | devc->block_counter++; | |
b908f067 UH |
418 | return TRUE; |
419 | } | |
420 | ||
f3a35908 | 421 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 | 422 | |
b0efc84e UH |
423 | /* |
424 | * All data was received and demangled, send it to the session bus. | |
425 | * | |
426 | * Note: Due to the method how data is spread across the 8MByte of | |
427 | * SDRAM, we can _not_ send it to the session bus in a streaming | |
428 | * manner while we receive it. We have to receive and de-mangle the | |
429 | * full 8MByte first, only then the whole buffer contains valid data. | |
430 | */ | |
b908f067 | 431 | for (i = 0; i < NUM_BLOCKS; i++) |
b172c130 | 432 | cv_send_block_to_session_bus(devc, i); |
b908f067 | 433 | |
6078d2c9 | 434 | dev_acquisition_stop(sdi, sdi); |
b908f067 | 435 | |
b908f067 UH |
436 | return TRUE; |
437 | } | |
438 | ||
6078d2c9 | 439 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 440 | { |
1644fb24 | 441 | struct dev_context *devc; |
00910580 UH |
442 | uint8_t buf[8]; |
443 | int bytes_to_write, bytes_written; | |
b908f067 | 444 | |
e73ffd42 BV |
445 | if (sdi->status != SR_ST_ACTIVE) |
446 | return SR_ERR_DEV_CLOSED; | |
447 | ||
1644fb24 | 448 | if (!(devc = sdi->priv)) { |
b172c130 | 449 | sr_err("sdi->priv was NULL."); |
b908f067 UH |
450 | return SR_ERR_BUG; |
451 | } | |
452 | ||
1644fb24 | 453 | if (!devc->ftdic) { |
b172c130 | 454 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
455 | return SR_ERR_BUG; |
456 | } | |
457 | ||
00910580 | 458 | devc->divcount = cv_samplerate_to_divcount(sdi, devc->cur_samplerate); |
1644fb24 | 459 | if (devc->divcount == 0xff) { |
b172c130 | 460 | sr_err("Invalid divcount/samplerate."); |
b908f067 UH |
461 | return SR_ERR; |
462 | } | |
463 | ||
b172c130 | 464 | if (cv_configure_channels(sdi) != SR_OK) { |
ba7dd8bb | 465 | sr_err("Failed to configure channels."); |
014359e3 BV |
466 | return SR_ERR; |
467 | } | |
468 | ||
b908f067 | 469 | /* Fill acquisition parameters into buf[]. */ |
00910580 UH |
470 | if (devc->prof->model == CHRONOVU_LA8) { |
471 | buf[0] = devc->divcount; | |
472 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
473 | buf[2] = devc->trigger_pattern & 0xff; | |
474 | buf[3] = devc->trigger_mask & 0xff; | |
475 | bytes_to_write = 4; | |
476 | } else { | |
477 | buf[0] = devc->divcount; | |
478 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
479 | buf[2] = (devc->trigger_pattern & 0xff00) >> 8; /* LSB */ | |
480 | buf[3] = (devc->trigger_pattern & 0x00ff) >> 0; /* MSB */ | |
481 | buf[4] = (devc->trigger_mask & 0xff00) >> 8; /* LSB */ | |
482 | buf[5] = (devc->trigger_mask & 0x00ff) >> 0; /* MSB */ | |
483 | buf[6] = (devc->trigger_edgemask & 0xff00) >> 8; /* LSB */ | |
484 | buf[7] = (devc->trigger_edgemask & 0x00ff) >> 0; /* MSB */ | |
485 | bytes_to_write = 8; | |
486 | } | |
b908f067 UH |
487 | |
488 | /* Start acquisition. */ | |
00910580 | 489 | bytes_written = cv_write(devc, buf, bytes_to_write); |
b908f067 | 490 | |
00910580 UH |
491 | if (bytes_written < 0 || bytes_written != bytes_to_write) { |
492 | sr_err("Acquisition failed to start."); | |
afc88319 | 493 | return SR_ERR; |
b908f067 UH |
494 | } |
495 | ||
4afdfd46 | 496 | sr_dbg("Hardware acquisition started successfully."); |
b908f067 | 497 | |
3e9b7f9c | 498 | devc->cb_data = cb_data; |
b908f067 UH |
499 | |
500 | /* Send header packet to the session bus. */ | |
29a27196 | 501 | std_session_send_df_header(cb_data, LOG_PREFIX); |
b908f067 | 502 | |
b908f067 | 503 | /* Time when we should be done (for detecting trigger timeouts). */ |
00910580 UH |
504 | devc->done = (devc->divcount + 1) * devc->prof->trigger_constant + |
505 | g_get_monotonic_time() + (10 * G_TIME_SPAN_SECOND); | |
1644fb24 BV |
506 | devc->block_counter = 0; |
507 | devc->trigger_found = 0; | |
b908f067 | 508 | |
b172c130 | 509 | /* Hook up a dummy handler to receive data from the device. */ |
3ffb6964 | 510 | sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); |
b908f067 UH |
511 | |
512 | return SR_OK; | |
513 | } | |
514 | ||
6078d2c9 | 515 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 516 | { |
b908f067 UH |
517 | struct sr_datafeed_packet packet; |
518 | ||
afc88319 | 519 | (void)sdi; |
b908f067 | 520 | |
f3a35908 | 521 | sr_dbg("Stopping acquisition."); |
7021f985 BV |
522 | sr_source_remove(-1); |
523 | ||
b908f067 | 524 | /* Send end packet to the session bus. */ |
f3a35908 | 525 | sr_dbg("Sending SR_DF_END."); |
b908f067 UH |
526 | packet.type = SR_DF_END; |
527 | sr_session_send(cb_data, &packet); | |
528 | ||
529 | return SR_OK; | |
530 | } | |
531 | ||
7b356712 UH |
532 | SR_PRIV struct sr_dev_driver chronovu_la_driver_info = { |
533 | .name = "chronovu-la", | |
534 | .longname = "ChronoVu LA8/LA16", | |
b908f067 | 535 | .api_version = 1, |
6078d2c9 UH |
536 | .init = init, |
537 | .cleanup = cleanup, | |
538 | .scan = scan, | |
539 | .dev_list = dev_list, | |
3b412e3a | 540 | .dev_clear = dev_clear, |
035a1078 BV |
541 | .config_get = config_get, |
542 | .config_set = config_set, | |
a1c743fc | 543 | .config_list = config_list, |
6078d2c9 UH |
544 | .dev_open = dev_open, |
545 | .dev_close = dev_close, | |
546 | .dev_acquisition_start = dev_acquisition_start, | |
547 | .dev_acquisition_stop = dev_acquisition_stop, | |
1644fb24 | 548 | .priv = NULL, |
b908f067 | 549 | }; |