]>
Commit | Line | Data |
---|---|---|
b908f067 UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de> | |
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 | ||
21 | #include <ftdi.h> | |
22 | #include <glib.h> | |
23 | #include <string.h> | |
45c59c8b BV |
24 | #include "libsigrok.h" |
25 | #include "libsigrok-internal.h" | |
b908f067 UH |
26 | #include "driver.h" |
27 | ||
765ef2f7 BV |
28 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info; |
29 | static struct sr_dev_driver *cdi = &chronovu_la8_driver_info; | |
b908f067 | 30 | |
74e5f12d UH |
31 | /* |
32 | * The ChronoVu LA8 can have multiple PIDs. Older versions shipped with | |
33 | * a standard FTDI USB VID/PID of 0403:6001, newer ones have 0403:8867. | |
34 | */ | |
35 | static const uint16_t usb_pids[] = { | |
36 | 0x6001, | |
37 | 0x8867, | |
38 | }; | |
39 | ||
b908f067 | 40 | /* Function prototypes. */ |
3ffb6964 BV |
41 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, |
42 | void *cb_data); | |
b908f067 | 43 | |
c4f3ed4b BV |
44 | static void clear_instances(void) |
45 | { | |
46 | GSList *l; | |
47 | struct sr_dev_inst *sdi; | |
1644fb24 BV |
48 | struct drv_context *drvc; |
49 | struct dev_context *devc; | |
50 | ||
51 | drvc = cdi->priv; | |
c4f3ed4b BV |
52 | |
53 | /* Properly close all devices. */ | |
1644fb24 | 54 | for (l = drvc->instances; l; l = l->next) { |
c4f3ed4b BV |
55 | if (!(sdi = l->data)) { |
56 | /* Log error, but continue cleaning up the rest. */ | |
57 | sr_err("la8: %s: sdi was NULL, continuing", __func__); | |
58 | continue; | |
59 | } | |
60 | if (sdi->priv) { | |
1644fb24 BV |
61 | devc = sdi->priv; |
62 | ftdi_free(devc->ftdic); | |
63 | g_free(devc); | |
c4f3ed4b BV |
64 | } |
65 | sr_dev_inst_free(sdi); | |
66 | } | |
1644fb24 BV |
67 | g_slist_free(drvc->instances); |
68 | drvc->instances = NULL; | |
c4f3ed4b BV |
69 | |
70 | } | |
71 | ||
40dda2c3 | 72 | static int hw_init(void) |
61136ea6 | 73 | { |
1644fb24 | 74 | struct drv_context *drvc; |
61136ea6 | 75 | |
1644fb24 BV |
76 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
77 | sr_err("chronovu-la8: driver context malloc failed."); | |
78 | return SR_ERR; | |
79 | } | |
80 | cdi->priv = drvc; | |
61136ea6 BV |
81 | |
82 | return SR_OK; | |
83 | } | |
84 | ||
c4f3ed4b | 85 | static GSList *hw_scan(GSList *options) |
b908f067 | 86 | { |
b908f067 | 87 | struct sr_dev_inst *sdi; |
87ca93c5 | 88 | struct sr_probe *probe; |
1644fb24 BV |
89 | struct drv_context *drvc; |
90 | struct dev_context *devc; | |
c4f3ed4b | 91 | GSList *devices; |
9c4311c5 BV |
92 | unsigned int i; |
93 | int ret; | |
c4f3ed4b BV |
94 | |
95 | (void)options; | |
1644fb24 | 96 | drvc = cdi->priv; |
c4f3ed4b | 97 | devices = NULL; |
b908f067 | 98 | |
1644fb24 BV |
99 | /* Allocate memory for our private device context. */ |
100 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
b908f067 UH |
101 | sr_err("la8: %s: struct context malloc failed", __func__); |
102 | goto err_free_nothing; | |
103 | } | |
104 | ||
105 | /* Set some sane defaults. */ | |
1644fb24 BV |
106 | devc->ftdic = NULL; |
107 | devc->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
108 | devc->limit_msec = 0; | |
109 | devc->limit_samples = 0; | |
110 | devc->session_dev_id = NULL; | |
111 | memset(devc->mangled_buf, 0, BS); | |
112 | devc->final_buf = NULL; | |
113 | devc->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
114 | devc->trigger_mask = 0x00; /* All probes are "don't care". */ | |
115 | devc->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
116 | devc->trigger_found = 0; | |
117 | devc->done = 0; | |
118 | devc->block_counter = 0; | |
119 | devc->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
120 | devc->usb_pid = 0; | |
b908f067 UH |
121 | |
122 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 123 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
b908f067 | 124 | sr_err("la8: %s: final_buf malloc failed", __func__); |
1644fb24 | 125 | goto err_free_devc; |
b908f067 UH |
126 | } |
127 | ||
128 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
1644fb24 | 129 | if (!(devc->ftdic = ftdi_new())) { |
b908f067 UH |
130 | sr_err("la8: %s: ftdi_new failed", __func__); |
131 | goto err_free_final_buf; | |
132 | } | |
133 | ||
134 | /* Check for the device and temporarily open it. */ | |
74e5f12d UH |
135 | for (i = 0; i < ARRAY_SIZE(usb_pids); i++) { |
136 | sr_dbg("la8: Probing for VID/PID %04x:%04x.", USB_VENDOR_ID, | |
137 | usb_pids[i]); | |
1644fb24 | 138 | ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
74e5f12d UH |
139 | usb_pids[i], USB_DESCRIPTION, NULL); |
140 | if (ret == 0) { | |
141 | sr_dbg("la8: Found LA8 device (%04x:%04x).", | |
142 | USB_VENDOR_ID, usb_pids[i]); | |
1644fb24 | 143 | devc->usb_pid = usb_pids[i]; |
74e5f12d | 144 | } |
b908f067 | 145 | } |
74e5f12d | 146 | |
1644fb24 | 147 | if (devc->usb_pid == 0) |
74e5f12d | 148 | goto err_free_ftdic; |
b908f067 UH |
149 | |
150 | /* Register the device with libsigrok. */ | |
151 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
152 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
153 | if (!sdi) { | |
154 | sr_err("la8: %s: sr_dev_inst_new failed", __func__); | |
155 | goto err_close_ftdic; | |
156 | } | |
cfe8a84d | 157 | sdi->driver = cdi; |
1644fb24 | 158 | sdi->priv = devc; |
b908f067 | 159 | |
87ca93c5 BV |
160 | for (i = 0; probe_names[i]; i++) { |
161 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
162 | probe_names[i]))) | |
163 | return NULL; | |
164 | sdi->probes = g_slist_append(sdi->probes, probe); | |
165 | } | |
166 | ||
c4f3ed4b | 167 | devices = g_slist_append(devices, sdi); |
1644fb24 | 168 | drvc->instances = g_slist_append(drvc->instances, sdi); |
b908f067 UH |
169 | |
170 | sr_spew("la8: Device init successful."); | |
171 | ||
172 | /* Close device. We'll reopen it again when we need it. */ | |
1644fb24 | 173 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 174 | |
c4f3ed4b | 175 | return devices; |
b908f067 UH |
176 | |
177 | err_close_ftdic: | |
1644fb24 | 178 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 179 | err_free_ftdic: |
1644fb24 | 180 | free(devc->ftdic); /* NOT g_free()! */ |
b908f067 | 181 | err_free_final_buf: |
1644fb24 BV |
182 | g_free(devc->final_buf); |
183 | err_free_devc: | |
184 | g_free(devc); | |
b908f067 UH |
185 | err_free_nothing: |
186 | ||
c4f3ed4b | 187 | return NULL; |
b908f067 UH |
188 | } |
189 | ||
25a0f108 | 190 | static int hw_dev_open(struct sr_dev_inst *sdi) |
b908f067 | 191 | { |
1644fb24 | 192 | struct dev_context *devc; |
25a0f108 | 193 | int ret; |
b908f067 | 194 | |
1644fb24 | 195 | if (!(devc = sdi->priv)) { |
b908f067 UH |
196 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
197 | return SR_ERR_BUG; | |
198 | } | |
199 | ||
200 | sr_dbg("la8: Opening LA8 device (%04x:%04x).", USB_VENDOR_ID, | |
1644fb24 | 201 | devc->usb_pid); |
b908f067 UH |
202 | |
203 | /* Open the device. */ | |
1644fb24 BV |
204 | if ((ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
205 | devc->usb_pid, USB_DESCRIPTION, NULL)) < 0) { | |
b908f067 | 206 | sr_err("la8: %s: ftdi_usb_open_desc: (%d) %s", |
1644fb24 BV |
207 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
208 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
209 | return SR_ERR; |
210 | } | |
211 | sr_dbg("la8: Device opened successfully."); | |
212 | ||
213 | /* Purge RX/TX buffers in the FTDI chip. */ | |
1644fb24 | 214 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { |
b908f067 | 215 | sr_err("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
1644fb24 BV |
216 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
217 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
218 | goto err_dev_open_close_ftdic; |
219 | } | |
220 | sr_dbg("la8: FTDI buffers purged successfully."); | |
221 | ||
222 | /* Enable flow control in the FTDI chip. */ | |
1644fb24 | 223 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
b908f067 | 224 | sr_err("la8: %s: ftdi_setflowcontrol: (%d) %s", |
1644fb24 BV |
225 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
226 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
227 | goto err_dev_open_close_ftdic; |
228 | } | |
229 | sr_dbg("la8: FTDI flow control enabled successfully."); | |
230 | ||
231 | /* Wait 100ms. */ | |
232 | g_usleep(100 * 1000); | |
233 | ||
234 | sdi->status = SR_ST_ACTIVE; | |
235 | ||
236 | return SR_OK; | |
237 | ||
238 | err_dev_open_close_ftdic: | |
1644fb24 | 239 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 UH |
240 | return SR_ERR; |
241 | } | |
242 | ||
25a0f108 | 243 | static int hw_dev_close(struct sr_dev_inst *sdi) |
b908f067 | 244 | { |
1644fb24 | 245 | struct dev_context *devc; |
b908f067 | 246 | |
1644fb24 | 247 | if (!(devc = sdi->priv)) { |
b908f067 UH |
248 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
249 | return SR_ERR_BUG; | |
250 | } | |
251 | ||
252 | sr_dbg("la8: Closing device."); | |
253 | ||
254 | if (sdi->status == SR_ST_ACTIVE) { | |
255 | sr_dbg("la8: Status ACTIVE, closing device."); | |
256 | /* TODO: Really ignore errors here, or return SR_ERR? */ | |
1644fb24 | 257 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 UH |
258 | } else { |
259 | sr_spew("la8: Status not ACTIVE, nothing to do."); | |
260 | } | |
261 | ||
262 | sdi->status = SR_ST_INACTIVE; | |
263 | ||
264 | sr_dbg("la8: Freeing sample buffer."); | |
1644fb24 | 265 | g_free(devc->final_buf); |
b908f067 UH |
266 | |
267 | return SR_OK; | |
268 | } | |
269 | ||
270 | static int hw_cleanup(void) | |
271 | { | |
b908f067 | 272 | |
cf1ebd54 BV |
273 | if (!cdi->priv) |
274 | return SR_OK; | |
275 | ||
c4f3ed4b | 276 | clear_instances(); |
b908f067 | 277 | |
c4f3ed4b | 278 | return SR_OK; |
b908f067 UH |
279 | } |
280 | ||
6a2761fd BV |
281 | static int hw_info_get(int info_id, const void **data, |
282 | const struct sr_dev_inst *sdi) | |
b908f067 | 283 | { |
1644fb24 | 284 | struct dev_context *devc; |
b908f067 | 285 | |
6a2761fd | 286 | switch (info_id) { |
7566601c BV |
287 | case SR_DI_HWCAPS: |
288 | *data = hwcaps; | |
289 | break; | |
b908f067 | 290 | case SR_DI_NUM_PROBES: |
6a2761fd | 291 | *data = GINT_TO_POINTER(NUM_PROBES); |
b908f067 UH |
292 | sr_spew("la8: %s: Returning number of probes: %d.", __func__, |
293 | NUM_PROBES); | |
294 | break; | |
295 | case SR_DI_PROBE_NAMES: | |
6a2761fd | 296 | *data = probe_names; |
b908f067 UH |
297 | sr_spew("la8: %s: Returning probenames.", __func__); |
298 | break; | |
299 | case SR_DI_SAMPLERATES: | |
300 | fill_supported_samplerates_if_needed(); | |
6a2761fd | 301 | *data = &samplerates; |
b908f067 UH |
302 | sr_spew("la8: %s: Returning samplerates.", __func__); |
303 | break; | |
304 | case SR_DI_TRIGGER_TYPES: | |
6a2761fd | 305 | *data = (char *)TRIGGER_TYPES; |
b908f067 UH |
306 | sr_spew("la8: %s: Returning trigger types: %s.", __func__, |
307 | TRIGGER_TYPES); | |
308 | break; | |
309 | case SR_DI_CUR_SAMPLERATE: | |
6a2761fd | 310 | if (sdi) { |
1644fb24 BV |
311 | devc = sdi->priv; |
312 | *data = &devc->cur_samplerate; | |
6a2761fd | 313 | sr_spew("la8: %s: Returning samplerate: %" PRIu64 "Hz.", |
1644fb24 | 314 | __func__, devc->cur_samplerate); |
6a2761fd BV |
315 | } else |
316 | return SR_ERR; | |
b908f067 | 317 | break; |
cfe8a84d BV |
318 | default: |
319 | return SR_ERR_ARG; | |
b908f067 UH |
320 | } |
321 | ||
6a2761fd | 322 | return SR_OK; |
b908f067 UH |
323 | } |
324 | ||
6f4b1868 BV |
325 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
326 | const void *value) | |
b908f067 | 327 | { |
1644fb24 | 328 | struct dev_context *devc; |
b908f067 | 329 | |
1644fb24 | 330 | if (!(devc = sdi->priv)) { |
b908f067 UH |
331 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
332 | return SR_ERR_BUG; | |
333 | } | |
334 | ||
b908f067 UH |
335 | switch (hwcap) { |
336 | case SR_HWCAP_SAMPLERATE: | |
337 | if (set_samplerate(sdi, *(const uint64_t *)value) == SR_ERR) { | |
338 | sr_err("la8: %s: setting samplerate failed.", __func__); | |
339 | return SR_ERR; | |
340 | } | |
1644fb24 | 341 | sr_dbg("la8: SAMPLERATE = %" PRIu64, devc->cur_samplerate); |
b908f067 UH |
342 | break; |
343 | case SR_HWCAP_PROBECONFIG: | |
1644fb24 | 344 | if (configure_probes(devc, (const GSList *)value) != SR_OK) { |
b908f067 UH |
345 | sr_err("la8: %s: probe config failed.", __func__); |
346 | return SR_ERR; | |
347 | } | |
348 | break; | |
349 | case SR_HWCAP_LIMIT_MSEC: | |
350 | if (*(const uint64_t *)value == 0) { | |
351 | sr_err("la8: %s: LIMIT_MSEC can't be 0.", __func__); | |
352 | return SR_ERR; | |
353 | } | |
1644fb24 BV |
354 | devc->limit_msec = *(const uint64_t *)value; |
355 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, devc->limit_msec); | |
b908f067 UH |
356 | break; |
357 | case SR_HWCAP_LIMIT_SAMPLES: | |
358 | if (*(const uint64_t *)value < MIN_NUM_SAMPLES) { | |
359 | sr_err("la8: %s: LIMIT_SAMPLES too small.", __func__); | |
360 | return SR_ERR; | |
361 | } | |
1644fb24 BV |
362 | devc->limit_samples = *(const uint64_t *)value; |
363 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, devc->limit_samples); | |
b908f067 UH |
364 | break; |
365 | default: | |
366 | /* Unknown capability, return SR_ERR. */ | |
367 | sr_err("la8: %s: Unknown capability.", __func__); | |
368 | return SR_ERR; | |
369 | break; | |
370 | } | |
371 | ||
372 | return SR_OK; | |
373 | } | |
374 | ||
375 | static int receive_data(int fd, int revents, void *cb_data) | |
376 | { | |
377 | int i, ret; | |
378 | struct sr_dev_inst *sdi; | |
1644fb24 | 379 | struct dev_context *devc; |
b908f067 UH |
380 | |
381 | /* Avoid compiler errors. */ | |
382 | (void)fd; | |
383 | (void)revents; | |
384 | ||
385 | if (!(sdi = cb_data)) { | |
386 | sr_err("la8: %s: cb_data was NULL", __func__); | |
387 | return FALSE; | |
388 | } | |
389 | ||
1644fb24 | 390 | if (!(devc = sdi->priv)) { |
b908f067 UH |
391 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
392 | return FALSE; | |
393 | } | |
394 | ||
1644fb24 BV |
395 | if (!devc->ftdic) { |
396 | sr_err("la8: %s: devc->ftdic was NULL", __func__); | |
b908f067 UH |
397 | return FALSE; |
398 | } | |
399 | ||
400 | /* Get one block of data. */ | |
1644fb24 | 401 | if ((ret = la8_read_block(devc)) < 0) { |
b908f067 | 402 | sr_err("la8: %s: la8_read_block error: %d", __func__, ret); |
3ffb6964 | 403 | hw_dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
404 | return FALSE; |
405 | } | |
406 | ||
407 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
408 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
409 | devc->block_counter++; | |
b908f067 UH |
410 | return TRUE; |
411 | } | |
412 | ||
413 | sr_dbg("la8: Sampling finished, sending data to session bus now."); | |
414 | ||
415 | /* All data was received and demangled, send it to the session bus. */ | |
416 | for (i = 0; i < NUM_BLOCKS; i++) | |
1644fb24 | 417 | send_block_to_session_bus(devc, i); |
b908f067 | 418 | |
3ffb6964 | 419 | hw_dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
420 | |
421 | // return FALSE; /* FIXME? */ | |
422 | return TRUE; | |
423 | } | |
424 | ||
3ffb6964 BV |
425 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
426 | void *cb_data) | |
b908f067 | 427 | { |
1644fb24 | 428 | struct dev_context *devc; |
b908f067 UH |
429 | struct sr_datafeed_packet packet; |
430 | struct sr_datafeed_header header; | |
431 | struct sr_datafeed_meta_logic meta; | |
432 | uint8_t buf[4]; | |
433 | int bytes_written; | |
434 | ||
1644fb24 | 435 | if (!(devc = sdi->priv)) { |
b908f067 UH |
436 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
437 | return SR_ERR_BUG; | |
438 | } | |
439 | ||
1644fb24 BV |
440 | if (!devc->ftdic) { |
441 | sr_err("la8: %s: devc->ftdic was NULL", __func__); | |
b908f067 UH |
442 | return SR_ERR_BUG; |
443 | } | |
444 | ||
1644fb24 BV |
445 | devc->divcount = samplerate_to_divcount(devc->cur_samplerate); |
446 | if (devc->divcount == 0xff) { | |
b908f067 UH |
447 | sr_err("la8: %s: invalid divcount/samplerate", __func__); |
448 | return SR_ERR; | |
449 | } | |
450 | ||
451 | sr_dbg("la8: Starting acquisition."); | |
452 | ||
453 | /* Fill acquisition parameters into buf[]. */ | |
1644fb24 | 454 | buf[0] = devc->divcount; |
b908f067 | 455 | buf[1] = 0xff; /* This byte must always be 0xff. */ |
1644fb24 BV |
456 | buf[2] = devc->trigger_pattern; |
457 | buf[3] = devc->trigger_mask; | |
b908f067 UH |
458 | |
459 | /* Start acquisition. */ | |
1644fb24 | 460 | bytes_written = la8_write(devc, buf, 4); |
b908f067 UH |
461 | |
462 | if (bytes_written < 0) { | |
463 | sr_err("la8: Acquisition failed to start."); | |
464 | return SR_ERR; | |
465 | } else if (bytes_written != 4) { | |
466 | sr_err("la8: Acquisition failed to start."); | |
467 | return SR_ERR; /* TODO: Other error and return code? */ | |
468 | } | |
469 | ||
470 | sr_dbg("la8: Acquisition started successfully."); | |
471 | ||
1644fb24 | 472 | devc->session_dev_id = cb_data; |
b908f067 UH |
473 | |
474 | /* Send header packet to the session bus. */ | |
475 | sr_dbg("la8: Sending SR_DF_HEADER."); | |
476 | packet.type = SR_DF_HEADER; | |
477 | packet.payload = &header; | |
478 | header.feed_version = 1; | |
479 | gettimeofday(&header.starttime, NULL); | |
1644fb24 | 480 | sr_session_send(devc->session_dev_id, &packet); |
b908f067 UH |
481 | |
482 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
483 | packet.type = SR_DF_META_LOGIC; | |
484 | packet.payload = &meta; | |
1644fb24 | 485 | meta.samplerate = devc->cur_samplerate; |
b908f067 | 486 | meta.num_probes = NUM_PROBES; |
1644fb24 | 487 | sr_session_send(devc->session_dev_id, &packet); |
b908f067 UH |
488 | |
489 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1644fb24 BV |
490 | devc->done = (devc->divcount + 1) * 0.08388608 + time(NULL) |
491 | + devc->trigger_timeout; | |
492 | devc->block_counter = 0; | |
493 | devc->trigger_found = 0; | |
b908f067 UH |
494 | |
495 | /* Hook up a dummy handler to receive data from the LA8. */ | |
3ffb6964 | 496 | sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); |
b908f067 UH |
497 | |
498 | return SR_OK; | |
499 | } | |
500 | ||
3ffb6964 BV |
501 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, |
502 | void *cb_data) | |
b908f067 | 503 | { |
1644fb24 | 504 | struct dev_context *devc; |
b908f067 UH |
505 | struct sr_datafeed_packet packet; |
506 | ||
507 | sr_dbg("la8: Stopping acquisition."); | |
508 | ||
1644fb24 | 509 | if (!(devc = sdi->priv)) { |
b908f067 UH |
510 | sr_err("la8: %s: sdi->priv was NULL", __func__); |
511 | return SR_ERR_BUG; | |
512 | } | |
513 | ||
514 | /* Send end packet to the session bus. */ | |
515 | sr_dbg("la8: Sending SR_DF_END."); | |
516 | packet.type = SR_DF_END; | |
517 | sr_session_send(cb_data, &packet); | |
518 | ||
519 | return SR_OK; | |
520 | } | |
521 | ||
522 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = { | |
523 | .name = "chronovu-la8", | |
524 | .longname = "ChronoVu LA8", | |
525 | .api_version = 1, | |
526 | .init = hw_init, | |
527 | .cleanup = hw_cleanup, | |
61136ea6 | 528 | .scan = hw_scan, |
b908f067 UH |
529 | .dev_open = hw_dev_open, |
530 | .dev_close = hw_dev_close, | |
6a2761fd | 531 | .info_get = hw_info_get, |
b908f067 UH |
532 | .dev_config_set = hw_dev_config_set, |
533 | .dev_acquisition_start = hw_dev_acquisition_start, | |
534 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
1644fb24 | 535 | .priv = NULL, |
b908f067 | 536 | }; |