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Commit | Line | Data |
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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 | 28 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info; |
f3a35908 | 29 | static struct sr_dev_driver *di = &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 | 41 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, |
f3a35908 | 42 | void *cb_data); |
b908f067 | 43 | |
811deee4 | 44 | static int clear_instances(void) |
c4f3ed4b BV |
45 | { |
46 | GSList *l; | |
47 | struct sr_dev_inst *sdi; | |
1644fb24 BV |
48 | struct drv_context *drvc; |
49 | struct dev_context *devc; | |
50 | ||
f3a35908 | 51 | drvc = di->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. */ | |
f3a35908 | 57 | sr_err("%s: sdi was NULL, continuing.", __func__); |
c4f3ed4b BV |
58 | continue; |
59 | } | |
60 | if (sdi->priv) { | |
1644fb24 BV |
61 | devc = sdi->priv; |
62 | ftdi_free(devc->ftdic); | |
c4f3ed4b BV |
63 | } |
64 | sr_dev_inst_free(sdi); | |
65 | } | |
1644fb24 BV |
66 | g_slist_free(drvc->instances); |
67 | drvc->instances = NULL; | |
c4f3ed4b | 68 | |
811deee4 | 69 | return SR_OK; |
c4f3ed4b BV |
70 | } |
71 | ||
40dda2c3 | 72 | static int hw_init(void) |
61136ea6 | 73 | { |
1644fb24 | 74 | struct drv_context *drvc; |
61136ea6 | 75 | |
1644fb24 | 76 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { |
f3a35908 UH |
77 | sr_err("Driver context malloc failed."); |
78 | return SR_ERR_MALLOC; | |
1644fb24 | 79 | } |
f3a35908 UH |
80 | |
81 | di->priv = drvc; | |
61136ea6 BV |
82 | |
83 | return SR_OK; | |
84 | } | |
85 | ||
c4f3ed4b | 86 | static GSList *hw_scan(GSList *options) |
b908f067 | 87 | { |
b908f067 | 88 | struct sr_dev_inst *sdi; |
87ca93c5 | 89 | struct sr_probe *probe; |
1644fb24 BV |
90 | struct drv_context *drvc; |
91 | struct dev_context *devc; | |
c4f3ed4b | 92 | GSList *devices; |
9c4311c5 BV |
93 | unsigned int i; |
94 | int ret; | |
c4f3ed4b BV |
95 | |
96 | (void)options; | |
f3a35908 UH |
97 | |
98 | drvc = di->priv; | |
c4f3ed4b | 99 | devices = NULL; |
b908f067 | 100 | |
1644fb24 BV |
101 | /* Allocate memory for our private device context. */ |
102 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
f3a35908 | 103 | sr_err("Device context malloc failed."); |
b908f067 UH |
104 | goto err_free_nothing; |
105 | } | |
106 | ||
107 | /* Set some sane defaults. */ | |
1644fb24 BV |
108 | devc->ftdic = NULL; |
109 | devc->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
110 | devc->limit_msec = 0; | |
111 | devc->limit_samples = 0; | |
112 | devc->session_dev_id = NULL; | |
113 | memset(devc->mangled_buf, 0, BS); | |
114 | devc->final_buf = NULL; | |
115 | devc->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
116 | devc->trigger_mask = 0x00; /* All probes are "don't care". */ | |
117 | devc->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
118 | devc->trigger_found = 0; | |
119 | devc->done = 0; | |
120 | devc->block_counter = 0; | |
121 | devc->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
122 | devc->usb_pid = 0; | |
b908f067 UH |
123 | |
124 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 125 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
f3a35908 | 126 | sr_err("final_buf malloc failed."); |
1644fb24 | 127 | goto err_free_devc; |
b908f067 UH |
128 | } |
129 | ||
130 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
1644fb24 | 131 | if (!(devc->ftdic = ftdi_new())) { |
f3a35908 | 132 | sr_err("%s: ftdi_new failed.", __func__); |
b908f067 UH |
133 | goto err_free_final_buf; |
134 | } | |
135 | ||
136 | /* Check for the device and temporarily open it. */ | |
74e5f12d | 137 | for (i = 0; i < ARRAY_SIZE(usb_pids); i++) { |
f3a35908 | 138 | sr_dbg("Probing for VID/PID %04x:%04x.", USB_VENDOR_ID, |
74e5f12d | 139 | usb_pids[i]); |
1644fb24 | 140 | ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
74e5f12d UH |
141 | usb_pids[i], USB_DESCRIPTION, NULL); |
142 | if (ret == 0) { | |
f3a35908 | 143 | sr_dbg("Found LA8 device (%04x:%04x).", |
74e5f12d | 144 | USB_VENDOR_ID, usb_pids[i]); |
1644fb24 | 145 | devc->usb_pid = usb_pids[i]; |
74e5f12d | 146 | } |
b908f067 | 147 | } |
74e5f12d | 148 | |
1644fb24 | 149 | if (devc->usb_pid == 0) |
74e5f12d | 150 | goto err_free_ftdic; |
b908f067 UH |
151 | |
152 | /* Register the device with libsigrok. */ | |
153 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
154 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
155 | if (!sdi) { | |
f3a35908 | 156 | sr_err("%s: sr_dev_inst_new failed.", __func__); |
b908f067 UH |
157 | goto err_close_ftdic; |
158 | } | |
f3a35908 | 159 | sdi->driver = di; |
1644fb24 | 160 | sdi->priv = devc; |
b908f067 | 161 | |
87ca93c5 BV |
162 | for (i = 0; probe_names[i]; i++) { |
163 | if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE, | |
f3a35908 | 164 | probe_names[i]))) |
87ca93c5 BV |
165 | return NULL; |
166 | sdi->probes = g_slist_append(sdi->probes, probe); | |
167 | } | |
168 | ||
c4f3ed4b | 169 | devices = g_slist_append(devices, sdi); |
1644fb24 | 170 | drvc->instances = g_slist_append(drvc->instances, sdi); |
b908f067 | 171 | |
f3a35908 | 172 | sr_spew("Device init successful."); |
b908f067 UH |
173 | |
174 | /* Close device. We'll reopen it again when we need it. */ | |
1644fb24 | 175 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 176 | |
c4f3ed4b | 177 | return devices; |
b908f067 UH |
178 | |
179 | err_close_ftdic: | |
1644fb24 | 180 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 181 | err_free_ftdic: |
1644fb24 | 182 | free(devc->ftdic); /* NOT g_free()! */ |
b908f067 | 183 | err_free_final_buf: |
1644fb24 BV |
184 | g_free(devc->final_buf); |
185 | err_free_devc: | |
186 | g_free(devc); | |
b908f067 UH |
187 | err_free_nothing: |
188 | ||
c4f3ed4b | 189 | return NULL; |
b908f067 UH |
190 | } |
191 | ||
811deee4 BV |
192 | static GSList *hw_dev_list(void) |
193 | { | |
194 | struct drv_context *drvc; | |
195 | ||
f3a35908 | 196 | drvc = di->priv; |
811deee4 BV |
197 | |
198 | return drvc->instances; | |
199 | } | |
200 | ||
25a0f108 | 201 | static int hw_dev_open(struct sr_dev_inst *sdi) |
b908f067 | 202 | { |
1644fb24 | 203 | struct dev_context *devc; |
25a0f108 | 204 | int ret; |
b908f067 | 205 | |
1644fb24 | 206 | if (!(devc = sdi->priv)) { |
f3a35908 | 207 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
208 | return SR_ERR_BUG; |
209 | } | |
210 | ||
f3a35908 | 211 | sr_dbg("Opening LA8 device (%04x:%04x).", USB_VENDOR_ID, |
1644fb24 | 212 | devc->usb_pid); |
b908f067 UH |
213 | |
214 | /* Open the device. */ | |
1644fb24 BV |
215 | if ((ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
216 | devc->usb_pid, USB_DESCRIPTION, NULL)) < 0) { | |
f3a35908 | 217 | sr_err("%s: ftdi_usb_open_desc: (%d) %s", |
1644fb24 BV |
218 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
219 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
220 | return SR_ERR; |
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) { |
f3a35908 | 226 | sr_err("%s: ftdi_usb_purge_buffers: (%d) %s", |
1644fb24 BV |
227 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
228 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
229 | goto err_dev_open_close_ftdic; |
230 | } | |
f3a35908 | 231 | sr_dbg("FTDI buffers purged successfully."); |
b908f067 UH |
232 | |
233 | /* Enable flow control in the FTDI chip. */ | |
1644fb24 | 234 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
f3a35908 | 235 | sr_err("%s: ftdi_setflowcontrol: (%d) %s", |
1644fb24 BV |
236 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
237 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
238 | goto err_dev_open_close_ftdic; |
239 | } | |
f3a35908 | 240 | sr_dbg("FTDI flow control enabled successfully."); |
b908f067 UH |
241 | |
242 | /* Wait 100ms. */ | |
243 | g_usleep(100 * 1000); | |
244 | ||
245 | sdi->status = SR_ST_ACTIVE; | |
246 | ||
247 | return SR_OK; | |
248 | ||
249 | err_dev_open_close_ftdic: | |
1644fb24 | 250 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 UH |
251 | return SR_ERR; |
252 | } | |
253 | ||
25a0f108 | 254 | static int hw_dev_close(struct sr_dev_inst *sdi) |
b908f067 | 255 | { |
1644fb24 | 256 | struct dev_context *devc; |
b908f067 | 257 | |
1644fb24 | 258 | if (!(devc = sdi->priv)) { |
f3a35908 | 259 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
260 | return SR_ERR_BUG; |
261 | } | |
262 | ||
f3a35908 | 263 | sr_dbg("Closing device."); |
b908f067 UH |
264 | |
265 | if (sdi->status == SR_ST_ACTIVE) { | |
f3a35908 | 266 | sr_dbg("Status ACTIVE, closing device."); |
1644fb24 | 267 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 | 268 | } else { |
f3a35908 | 269 | sr_spew("Status not ACTIVE, nothing to do."); |
b908f067 UH |
270 | } |
271 | ||
272 | sdi->status = SR_ST_INACTIVE; | |
273 | ||
f3a35908 | 274 | sr_dbg("Freeing sample buffer."); |
1644fb24 | 275 | g_free(devc->final_buf); |
b908f067 UH |
276 | |
277 | return SR_OK; | |
278 | } | |
279 | ||
280 | static int hw_cleanup(void) | |
281 | { | |
f3a35908 UH |
282 | if (!di->priv) { |
283 | sr_err("%s: di->priv was NULL.", __func__); | |
284 | return SR_ERR_BUG; | |
285 | } | |
cf1ebd54 | 286 | |
c4f3ed4b | 287 | clear_instances(); |
b908f067 | 288 | |
c4f3ed4b | 289 | return SR_OK; |
b908f067 UH |
290 | } |
291 | ||
6a2761fd | 292 | static int hw_info_get(int info_id, const void **data, |
f3a35908 | 293 | const struct sr_dev_inst *sdi) |
b908f067 | 294 | { |
1644fb24 | 295 | struct dev_context *devc; |
b908f067 | 296 | |
6a2761fd | 297 | switch (info_id) { |
7566601c BV |
298 | case SR_DI_HWCAPS: |
299 | *data = hwcaps; | |
300 | break; | |
b908f067 | 301 | case SR_DI_NUM_PROBES: |
6a2761fd | 302 | *data = GINT_TO_POINTER(NUM_PROBES); |
f3a35908 | 303 | sr_spew("%s: Returning number of probes: %d.", __func__, |
b908f067 UH |
304 | NUM_PROBES); |
305 | break; | |
306 | case SR_DI_PROBE_NAMES: | |
6a2761fd | 307 | *data = probe_names; |
f3a35908 | 308 | sr_spew("%s: Returning probenames.", __func__); |
b908f067 UH |
309 | break; |
310 | case SR_DI_SAMPLERATES: | |
311 | fill_supported_samplerates_if_needed(); | |
6a2761fd | 312 | *data = &samplerates; |
f3a35908 | 313 | sr_spew("%s: Returning samplerates.", __func__); |
b908f067 UH |
314 | break; |
315 | case SR_DI_TRIGGER_TYPES: | |
6a2761fd | 316 | *data = (char *)TRIGGER_TYPES; |
f3a35908 | 317 | sr_spew("%s: Returning trigger types: %s.", __func__, |
b908f067 UH |
318 | TRIGGER_TYPES); |
319 | break; | |
320 | case SR_DI_CUR_SAMPLERATE: | |
6a2761fd | 321 | if (sdi) { |
1644fb24 BV |
322 | devc = sdi->priv; |
323 | *data = &devc->cur_samplerate; | |
f3a35908 | 324 | sr_spew("%s: Returning samplerate: %" PRIu64 "Hz.", |
1644fb24 | 325 | __func__, devc->cur_samplerate); |
6a2761fd BV |
326 | } else |
327 | return SR_ERR; | |
b908f067 | 328 | break; |
cfe8a84d BV |
329 | default: |
330 | return SR_ERR_ARG; | |
b908f067 UH |
331 | } |
332 | ||
6a2761fd | 333 | return SR_OK; |
b908f067 UH |
334 | } |
335 | ||
6f4b1868 BV |
336 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, |
337 | const void *value) | |
b908f067 | 338 | { |
1644fb24 | 339 | struct dev_context *devc; |
b908f067 | 340 | |
1644fb24 | 341 | if (!(devc = sdi->priv)) { |
f3a35908 | 342 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
343 | return SR_ERR_BUG; |
344 | } | |
345 | ||
b908f067 UH |
346 | switch (hwcap) { |
347 | case SR_HWCAP_SAMPLERATE: | |
348 | if (set_samplerate(sdi, *(const uint64_t *)value) == SR_ERR) { | |
f3a35908 | 349 | sr_err("%s: setting samplerate failed.", __func__); |
b908f067 UH |
350 | return SR_ERR; |
351 | } | |
f3a35908 | 352 | sr_dbg("SAMPLERATE = %" PRIu64, devc->cur_samplerate); |
b908f067 | 353 | break; |
b908f067 UH |
354 | case SR_HWCAP_LIMIT_MSEC: |
355 | if (*(const uint64_t *)value == 0) { | |
f3a35908 | 356 | sr_err("%s: LIMIT_MSEC can't be 0.", __func__); |
b908f067 UH |
357 | return SR_ERR; |
358 | } | |
1644fb24 | 359 | devc->limit_msec = *(const uint64_t *)value; |
f3a35908 | 360 | sr_dbg("LIMIT_MSEC = %" PRIu64, devc->limit_msec); |
b908f067 UH |
361 | break; |
362 | case SR_HWCAP_LIMIT_SAMPLES: | |
363 | if (*(const uint64_t *)value < MIN_NUM_SAMPLES) { | |
f3a35908 | 364 | sr_err("%s: LIMIT_SAMPLES too small.", __func__); |
b908f067 UH |
365 | return SR_ERR; |
366 | } | |
1644fb24 | 367 | devc->limit_samples = *(const uint64_t *)value; |
f3a35908 | 368 | sr_dbg("LIMIT_SAMPLES = %" PRIu64, devc->limit_samples); |
b908f067 UH |
369 | break; |
370 | default: | |
371 | /* Unknown capability, return SR_ERR. */ | |
f3a35908 | 372 | sr_err("%s: Unknown capability: %d.", __func__, hwcap); |
b908f067 UH |
373 | return SR_ERR; |
374 | break; | |
375 | } | |
376 | ||
377 | return SR_OK; | |
378 | } | |
379 | ||
380 | static int receive_data(int fd, int revents, void *cb_data) | |
381 | { | |
382 | int i, ret; | |
383 | struct sr_dev_inst *sdi; | |
1644fb24 | 384 | struct dev_context *devc; |
b908f067 | 385 | |
b908f067 UH |
386 | (void)fd; |
387 | (void)revents; | |
388 | ||
389 | if (!(sdi = cb_data)) { | |
f3a35908 | 390 | sr_err("%s: cb_data was NULL.", __func__); |
b908f067 UH |
391 | return FALSE; |
392 | } | |
393 | ||
1644fb24 | 394 | if (!(devc = sdi->priv)) { |
f3a35908 | 395 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
396 | return FALSE; |
397 | } | |
398 | ||
1644fb24 | 399 | if (!devc->ftdic) { |
f3a35908 | 400 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
401 | return FALSE; |
402 | } | |
403 | ||
404 | /* Get one block of data. */ | |
1644fb24 | 405 | if ((ret = la8_read_block(devc)) < 0) { |
f3a35908 | 406 | sr_err("%s: la8_read_block error: %d.", __func__, ret); |
3ffb6964 | 407 | hw_dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
408 | return FALSE; |
409 | } | |
410 | ||
411 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
412 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
413 | devc->block_counter++; | |
b908f067 UH |
414 | return TRUE; |
415 | } | |
416 | ||
f3a35908 | 417 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 UH |
418 | |
419 | /* All data was received and demangled, send it to the session bus. */ | |
420 | for (i = 0; i < NUM_BLOCKS; i++) | |
1644fb24 | 421 | send_block_to_session_bus(devc, i); |
b908f067 | 422 | |
3ffb6964 | 423 | hw_dev_acquisition_stop(sdi, sdi); |
b908f067 | 424 | |
b908f067 UH |
425 | return TRUE; |
426 | } | |
427 | ||
3ffb6964 | 428 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, |
f3a35908 | 429 | void *cb_data) |
b908f067 | 430 | { |
1644fb24 | 431 | struct dev_context *devc; |
b908f067 UH |
432 | struct sr_datafeed_packet packet; |
433 | struct sr_datafeed_header header; | |
434 | struct sr_datafeed_meta_logic meta; | |
435 | uint8_t buf[4]; | |
436 | int bytes_written; | |
437 | ||
1644fb24 | 438 | if (!(devc = sdi->priv)) { |
f3a35908 | 439 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
440 | return SR_ERR_BUG; |
441 | } | |
442 | ||
1644fb24 | 443 | if (!devc->ftdic) { |
f3a35908 | 444 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
445 | return SR_ERR_BUG; |
446 | } | |
447 | ||
1644fb24 BV |
448 | devc->divcount = samplerate_to_divcount(devc->cur_samplerate); |
449 | if (devc->divcount == 0xff) { | |
f3a35908 | 450 | sr_err("%s: Invalid divcount/samplerate.", __func__); |
b908f067 UH |
451 | return SR_ERR; |
452 | } | |
453 | ||
014359e3 | 454 | if (configure_probes(sdi) != SR_OK) { |
f3a35908 | 455 | sr_err("Failed to configure probes."); |
014359e3 BV |
456 | return SR_ERR; |
457 | } | |
458 | ||
f3a35908 | 459 | sr_dbg("Starting acquisition."); |
b908f067 UH |
460 | |
461 | /* Fill acquisition parameters into buf[]. */ | |
1644fb24 | 462 | buf[0] = devc->divcount; |
b908f067 | 463 | buf[1] = 0xff; /* This byte must always be 0xff. */ |
1644fb24 BV |
464 | buf[2] = devc->trigger_pattern; |
465 | buf[3] = devc->trigger_mask; | |
b908f067 UH |
466 | |
467 | /* Start acquisition. */ | |
1644fb24 | 468 | bytes_written = la8_write(devc, buf, 4); |
b908f067 UH |
469 | |
470 | if (bytes_written < 0) { | |
f3a35908 | 471 | sr_err("Acquisition failed to start: %d.", bytes_written); |
b908f067 UH |
472 | return SR_ERR; |
473 | } else if (bytes_written != 4) { | |
f3a35908 | 474 | sr_err("Acquisition failed to start: %d.", bytes_written); |
afc88319 | 475 | return SR_ERR; |
b908f067 UH |
476 | } |
477 | ||
f3a35908 | 478 | sr_dbg("Acquisition started successfully."); |
b908f067 | 479 | |
1644fb24 | 480 | devc->session_dev_id = cb_data; |
b908f067 UH |
481 | |
482 | /* Send header packet to the session bus. */ | |
f3a35908 | 483 | sr_dbg("Sending SR_DF_HEADER."); |
b908f067 UH |
484 | packet.type = SR_DF_HEADER; |
485 | packet.payload = &header; | |
486 | header.feed_version = 1; | |
487 | gettimeofday(&header.starttime, NULL); | |
1644fb24 | 488 | sr_session_send(devc->session_dev_id, &packet); |
b908f067 UH |
489 | |
490 | /* Send metadata about the SR_DF_LOGIC packets to come. */ | |
491 | packet.type = SR_DF_META_LOGIC; | |
492 | packet.payload = &meta; | |
1644fb24 | 493 | meta.samplerate = devc->cur_samplerate; |
b908f067 | 494 | meta.num_probes = NUM_PROBES; |
1644fb24 | 495 | sr_session_send(devc->session_dev_id, &packet); |
b908f067 UH |
496 | |
497 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1644fb24 BV |
498 | devc->done = (devc->divcount + 1) * 0.08388608 + time(NULL) |
499 | + devc->trigger_timeout; | |
500 | devc->block_counter = 0; | |
501 | devc->trigger_found = 0; | |
b908f067 UH |
502 | |
503 | /* Hook up a dummy handler to receive data from the LA8. */ | |
3ffb6964 | 504 | sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); |
b908f067 UH |
505 | |
506 | return SR_OK; | |
507 | } | |
508 | ||
3ffb6964 | 509 | static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi, |
f3a35908 | 510 | void *cb_data) |
b908f067 | 511 | { |
b908f067 UH |
512 | struct sr_datafeed_packet packet; |
513 | ||
afc88319 | 514 | (void)sdi; |
b908f067 | 515 | |
f3a35908 | 516 | sr_dbg("Stopping acquisition."); |
7021f985 BV |
517 | sr_source_remove(-1); |
518 | ||
b908f067 | 519 | /* Send end packet to the session bus. */ |
f3a35908 | 520 | sr_dbg("Sending SR_DF_END."); |
b908f067 UH |
521 | packet.type = SR_DF_END; |
522 | sr_session_send(cb_data, &packet); | |
523 | ||
524 | return SR_OK; | |
525 | } | |
526 | ||
527 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = { | |
528 | .name = "chronovu-la8", | |
529 | .longname = "ChronoVu LA8", | |
530 | .api_version = 1, | |
531 | .init = hw_init, | |
532 | .cleanup = hw_cleanup, | |
61136ea6 | 533 | .scan = hw_scan, |
811deee4 BV |
534 | .dev_list = hw_dev_list, |
535 | .dev_clear = clear_instances, | |
b908f067 UH |
536 | .dev_open = hw_dev_open, |
537 | .dev_close = hw_dev_close, | |
6a2761fd | 538 | .info_get = hw_info_get, |
b908f067 UH |
539 | .dev_config_set = hw_dev_config_set, |
540 | .dev_acquisition_start = hw_dev_acquisition_start, | |
541 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
1644fb24 | 542 | .priv = NULL, |
b908f067 | 543 | }; |