]>
Commit | Line | Data |
---|---|---|
b908f067 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
b908f067 UH |
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" | |
45e080b6 | 26 | #include "protocol.h" |
b908f067 | 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 | |
415e6389 UH |
31 | /* |
32 | * This will be initialized via config_list()/SR_CONF_SAMPLERATE. | |
1bec72d2 BV |
33 | * |
34 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
35 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
36 | */ | |
415e6389 | 37 | SR_PRIV uint64_t chronovu_la8_samplerates[255] = { 0 }; |
1bec72d2 BV |
38 | |
39 | /* Note: Continuous sampling is not supported by the hardware. */ | |
40 | SR_PRIV const int32_t chronovu_la8_hwcaps[] = { | |
41 | SR_CONF_LOGIC_ANALYZER, | |
42 | SR_CONF_SAMPLERATE, | |
43 | SR_CONF_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
44 | SR_CONF_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
45 | }; | |
46 | ||
74e5f12d UH |
47 | /* |
48 | * The ChronoVu LA8 can have multiple PIDs. Older versions shipped with | |
49 | * a standard FTDI USB VID/PID of 0403:6001, newer ones have 0403:8867. | |
50 | */ | |
51 | static const uint16_t usb_pids[] = { | |
52 | 0x6001, | |
53 | 0x8867, | |
54 | }; | |
55 | ||
b908f067 | 56 | /* Function prototypes. */ |
6078d2c9 | 57 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
b908f067 | 58 | |
97900799 | 59 | static void clear_helper(void *priv) |
c4f3ed4b | 60 | { |
1644fb24 | 61 | struct dev_context *devc; |
97900799 UH |
62 | |
63 | devc = priv; | |
1644fb24 | 64 | |
97900799 UH |
65 | ftdi_free(devc->ftdic); |
66 | g_free(devc->final_buf); | |
67 | } | |
c4f3ed4b | 68 | |
3b412e3a | 69 | static int dev_clear(void) |
97900799 UH |
70 | { |
71 | return std_dev_clear(di, clear_helper); | |
c4f3ed4b BV |
72 | } |
73 | ||
6078d2c9 | 74 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 75 | { |
f6beaac5 | 76 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
77 | } |
78 | ||
6078d2c9 | 79 | static GSList *scan(GSList *options) |
b908f067 | 80 | { |
b908f067 | 81 | struct sr_dev_inst *sdi; |
87ca93c5 | 82 | struct sr_probe *probe; |
1644fb24 BV |
83 | struct drv_context *drvc; |
84 | struct dev_context *devc; | |
c4f3ed4b | 85 | GSList *devices; |
9c4311c5 BV |
86 | unsigned int i; |
87 | int ret; | |
c4f3ed4b BV |
88 | |
89 | (void)options; | |
f3a35908 UH |
90 | |
91 | drvc = di->priv; | |
4b97c74e | 92 | |
c4f3ed4b | 93 | devices = NULL; |
b908f067 | 94 | |
1644fb24 BV |
95 | /* Allocate memory for our private device context. */ |
96 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
f3a35908 | 97 | sr_err("Device context malloc failed."); |
b908f067 UH |
98 | goto err_free_nothing; |
99 | } | |
100 | ||
101 | /* Set some sane defaults. */ | |
1644fb24 BV |
102 | devc->ftdic = NULL; |
103 | devc->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
104 | devc->limit_msec = 0; | |
105 | devc->limit_samples = 0; | |
3e9b7f9c | 106 | devc->cb_data = NULL; |
1644fb24 BV |
107 | memset(devc->mangled_buf, 0, BS); |
108 | devc->final_buf = NULL; | |
109 | devc->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
110 | devc->trigger_mask = 0x00; /* All probes are "don't care". */ | |
111 | devc->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
112 | devc->trigger_found = 0; | |
113 | devc->done = 0; | |
114 | devc->block_counter = 0; | |
115 | devc->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
116 | devc->usb_pid = 0; | |
b908f067 UH |
117 | |
118 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 119 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
f3a35908 | 120 | sr_err("final_buf malloc failed."); |
1644fb24 | 121 | goto err_free_devc; |
b908f067 UH |
122 | } |
123 | ||
124 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
1644fb24 | 125 | if (!(devc->ftdic = ftdi_new())) { |
f3a35908 | 126 | sr_err("%s: ftdi_new failed.", __func__); |
b908f067 UH |
127 | goto err_free_final_buf; |
128 | } | |
129 | ||
130 | /* Check for the device and temporarily open it. */ | |
74e5f12d | 131 | for (i = 0; i < ARRAY_SIZE(usb_pids); i++) { |
f3a35908 | 132 | sr_dbg("Probing for VID/PID %04x:%04x.", USB_VENDOR_ID, |
74e5f12d | 133 | usb_pids[i]); |
1644fb24 | 134 | ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
74e5f12d UH |
135 | usb_pids[i], USB_DESCRIPTION, NULL); |
136 | if (ret == 0) { | |
f3a35908 | 137 | sr_dbg("Found LA8 device (%04x:%04x).", |
74e5f12d | 138 | USB_VENDOR_ID, usb_pids[i]); |
1644fb24 | 139 | devc->usb_pid = usb_pids[i]; |
74e5f12d | 140 | } |
b908f067 | 141 | } |
74e5f12d | 142 | |
1644fb24 | 143 | if (devc->usb_pid == 0) |
74e5f12d | 144 | goto err_free_ftdic; |
b908f067 UH |
145 | |
146 | /* Register the device with libsigrok. */ | |
147 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
148 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
149 | if (!sdi) { | |
f3a35908 | 150 | sr_err("%s: sr_dev_inst_new failed.", __func__); |
b908f067 UH |
151 | goto err_close_ftdic; |
152 | } | |
f3a35908 | 153 | sdi->driver = di; |
1644fb24 | 154 | sdi->priv = devc; |
b908f067 | 155 | |
1bec72d2 | 156 | for (i = 0; chronovu_la8_probe_names[i]; i++) { |
de6e0eca | 157 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, |
1bec72d2 | 158 | chronovu_la8_probe_names[i]))) |
87ca93c5 BV |
159 | return NULL; |
160 | sdi->probes = g_slist_append(sdi->probes, probe); | |
161 | } | |
162 | ||
c4f3ed4b | 163 | devices = g_slist_append(devices, sdi); |
1644fb24 | 164 | drvc->instances = g_slist_append(drvc->instances, sdi); |
b908f067 | 165 | |
b908f067 | 166 | /* Close device. We'll reopen it again when we need it. */ |
1644fb24 | 167 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 168 | |
c4f3ed4b | 169 | return devices; |
b908f067 UH |
170 | |
171 | err_close_ftdic: | |
1644fb24 | 172 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 173 | err_free_ftdic: |
4f9bf9a2 | 174 | ftdi_free(devc->ftdic); /* NOT free() or g_free()! */ |
b908f067 | 175 | err_free_final_buf: |
1644fb24 BV |
176 | g_free(devc->final_buf); |
177 | err_free_devc: | |
178 | g_free(devc); | |
b908f067 UH |
179 | err_free_nothing: |
180 | ||
c4f3ed4b | 181 | return NULL; |
b908f067 UH |
182 | } |
183 | ||
6078d2c9 | 184 | static GSList *dev_list(void) |
811deee4 | 185 | { |
0e94d524 | 186 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
187 | } |
188 | ||
6078d2c9 | 189 | static int dev_open(struct sr_dev_inst *sdi) |
b908f067 | 190 | { |
1644fb24 | 191 | struct dev_context *devc; |
25a0f108 | 192 | int ret; |
b908f067 | 193 | |
1644fb24 | 194 | if (!(devc = sdi->priv)) { |
f3a35908 | 195 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
196 | return SR_ERR_BUG; |
197 | } | |
198 | ||
f3a35908 | 199 | sr_dbg("Opening LA8 device (%04x:%04x).", USB_VENDOR_ID, |
1644fb24 | 200 | devc->usb_pid); |
b908f067 UH |
201 | |
202 | /* Open the device. */ | |
1644fb24 BV |
203 | if ((ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
204 | devc->usb_pid, USB_DESCRIPTION, NULL)) < 0) { | |
f3a35908 | 205 | sr_err("%s: ftdi_usb_open_desc: (%d) %s", |
1644fb24 BV |
206 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
207 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
208 | return SR_ERR; |
209 | } | |
f3a35908 | 210 | sr_dbg("Device opened successfully."); |
b908f067 UH |
211 | |
212 | /* Purge RX/TX buffers in the FTDI chip. */ | |
1644fb24 | 213 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { |
f3a35908 | 214 | sr_err("%s: ftdi_usb_purge_buffers: (%d) %s", |
1644fb24 BV |
215 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
216 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
217 | goto err_dev_open_close_ftdic; |
218 | } | |
f3a35908 | 219 | sr_dbg("FTDI buffers purged successfully."); |
b908f067 UH |
220 | |
221 | /* Enable flow control in the FTDI chip. */ | |
1644fb24 | 222 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
f3a35908 | 223 | sr_err("%s: ftdi_setflowcontrol: (%d) %s", |
1644fb24 BV |
224 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
225 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
226 | goto err_dev_open_close_ftdic; |
227 | } | |
f3a35908 | 228 | sr_dbg("FTDI flow control enabled successfully."); |
b908f067 UH |
229 | |
230 | /* Wait 100ms. */ | |
231 | g_usleep(100 * 1000); | |
232 | ||
233 | sdi->status = SR_ST_ACTIVE; | |
234 | ||
235 | return SR_OK; | |
236 | ||
237 | err_dev_open_close_ftdic: | |
1644fb24 | 238 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 UH |
239 | return SR_ERR; |
240 | } | |
241 | ||
6078d2c9 | 242 | static int dev_close(struct sr_dev_inst *sdi) |
b908f067 | 243 | { |
1644fb24 | 244 | struct dev_context *devc; |
b908f067 | 245 | |
961009b0 | 246 | devc = sdi->priv; |
b908f067 UH |
247 | |
248 | if (sdi->status == SR_ST_ACTIVE) { | |
f3a35908 | 249 | sr_dbg("Status ACTIVE, closing device."); |
1644fb24 | 250 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 | 251 | } else { |
f3a35908 | 252 | sr_spew("Status not ACTIVE, nothing to do."); |
b908f067 UH |
253 | } |
254 | ||
255 | sdi->status = SR_ST_INACTIVE; | |
256 | ||
b908f067 UH |
257 | return SR_OK; |
258 | } | |
259 | ||
6078d2c9 | 260 | static int cleanup(void) |
b908f067 | 261 | { |
3b412e3a | 262 | return dev_clear(); |
b908f067 UH |
263 | } |
264 | ||
1bec72d2 | 265 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi) |
b908f067 | 266 | { |
1644fb24 | 267 | struct dev_context *devc; |
b908f067 | 268 | |
035a1078 | 269 | switch (id) { |
123e1313 | 270 | case SR_CONF_SAMPLERATE: |
6a2761fd | 271 | if (sdi) { |
1644fb24 | 272 | devc = sdi->priv; |
1bec72d2 | 273 | *data = g_variant_new_uint64(devc->cur_samplerate); |
f3a35908 | 274 | sr_spew("%s: Returning samplerate: %" PRIu64 "Hz.", |
1644fb24 | 275 | __func__, devc->cur_samplerate); |
6a2761fd BV |
276 | } else |
277 | return SR_ERR; | |
b908f067 | 278 | break; |
cfe8a84d | 279 | default: |
bd6fbf62 | 280 | return SR_ERR_NA; |
b908f067 UH |
281 | } |
282 | ||
6a2761fd | 283 | return SR_OK; |
b908f067 UH |
284 | } |
285 | ||
1bec72d2 | 286 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi) |
b908f067 | 287 | { |
1644fb24 | 288 | struct dev_context *devc; |
b908f067 | 289 | |
e73ffd42 BV |
290 | if (sdi->status != SR_ST_ACTIVE) |
291 | return SR_ERR_DEV_CLOSED; | |
292 | ||
1644fb24 | 293 | if (!(devc = sdi->priv)) { |
f3a35908 | 294 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
295 | return SR_ERR_BUG; |
296 | } | |
297 | ||
035a1078 | 298 | switch (id) { |
1953564a | 299 | case SR_CONF_SAMPLERATE: |
1bec72d2 | 300 | if (set_samplerate(sdi, g_variant_get_uint64(data)) == SR_ERR) { |
f3a35908 | 301 | sr_err("%s: setting samplerate failed.", __func__); |
b908f067 UH |
302 | return SR_ERR; |
303 | } | |
f3a35908 | 304 | sr_dbg("SAMPLERATE = %" PRIu64, devc->cur_samplerate); |
b908f067 | 305 | break; |
1953564a | 306 | case SR_CONF_LIMIT_MSEC: |
1bec72d2 | 307 | if (g_variant_get_uint64(data) == 0) { |
f3a35908 | 308 | sr_err("%s: LIMIT_MSEC can't be 0.", __func__); |
b908f067 UH |
309 | return SR_ERR; |
310 | } | |
1bec72d2 | 311 | devc->limit_msec = g_variant_get_uint64(data); |
f3a35908 | 312 | sr_dbg("LIMIT_MSEC = %" PRIu64, devc->limit_msec); |
b908f067 | 313 | break; |
1953564a | 314 | case SR_CONF_LIMIT_SAMPLES: |
1bec72d2 | 315 | if (g_variant_get_uint64(data) < MIN_NUM_SAMPLES) { |
f3a35908 | 316 | sr_err("%s: LIMIT_SAMPLES too small.", __func__); |
b908f067 UH |
317 | return SR_ERR; |
318 | } | |
1bec72d2 | 319 | devc->limit_samples = g_variant_get_uint64(data); |
f3a35908 | 320 | sr_dbg("LIMIT_SAMPLES = %" PRIu64, devc->limit_samples); |
b908f067 UH |
321 | break; |
322 | default: | |
bd6fbf62 | 323 | return SR_ERR_NA; |
b908f067 UH |
324 | } |
325 | ||
326 | return SR_OK; | |
327 | } | |
328 | ||
1bec72d2 | 329 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi) |
a1c743fc | 330 | { |
1bec72d2 BV |
331 | GVariant *gvar; |
332 | GVariantBuilder gvb; | |
a1c743fc BV |
333 | |
334 | (void)sdi; | |
335 | ||
336 | switch (key) { | |
9a6517d1 | 337 | case SR_CONF_DEVICE_OPTIONS: |
1bec72d2 | 338 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
415e6389 UH |
339 | chronovu_la8_hwcaps, |
340 | ARRAY_SIZE(chronovu_la8_hwcaps), | |
1bec72d2 | 341 | sizeof(int32_t)); |
9a6517d1 | 342 | break; |
a1c743fc BV |
343 | case SR_CONF_SAMPLERATE: |
344 | fill_supported_samplerates_if_needed(); | |
1bec72d2 BV |
345 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
346 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
415e6389 UH |
347 | chronovu_la8_samplerates, |
348 | ARRAY_SIZE(chronovu_la8_samplerates), | |
1bec72d2 BV |
349 | sizeof(uint64_t)); |
350 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
351 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 352 | break; |
c50277a6 | 353 | case SR_CONF_TRIGGER_TYPE: |
1bec72d2 | 354 | *data = g_variant_new_string(TRIGGER_TYPE); |
c50277a6 | 355 | break; |
a1c743fc | 356 | default: |
bd6fbf62 | 357 | return SR_ERR_NA; |
a1c743fc BV |
358 | } |
359 | ||
360 | return SR_OK; | |
361 | } | |
362 | ||
b908f067 UH |
363 | static int receive_data(int fd, int revents, void *cb_data) |
364 | { | |
365 | int i, ret; | |
366 | struct sr_dev_inst *sdi; | |
1644fb24 | 367 | struct dev_context *devc; |
b908f067 | 368 | |
b908f067 UH |
369 | (void)fd; |
370 | (void)revents; | |
371 | ||
372 | if (!(sdi = cb_data)) { | |
f3a35908 | 373 | sr_err("%s: cb_data was NULL.", __func__); |
b908f067 UH |
374 | return FALSE; |
375 | } | |
376 | ||
1644fb24 | 377 | if (!(devc = sdi->priv)) { |
f3a35908 | 378 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
379 | return FALSE; |
380 | } | |
381 | ||
1644fb24 | 382 | if (!devc->ftdic) { |
f3a35908 | 383 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
384 | return FALSE; |
385 | } | |
386 | ||
387 | /* Get one block of data. */ | |
1644fb24 | 388 | if ((ret = la8_read_block(devc)) < 0) { |
f3a35908 | 389 | sr_err("%s: la8_read_block error: %d.", __func__, ret); |
6078d2c9 | 390 | dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
391 | return FALSE; |
392 | } | |
393 | ||
394 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
395 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
396 | devc->block_counter++; | |
b908f067 UH |
397 | return TRUE; |
398 | } | |
399 | ||
f3a35908 | 400 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 UH |
401 | |
402 | /* All data was received and demangled, send it to the session bus. */ | |
403 | for (i = 0; i < NUM_BLOCKS; i++) | |
1644fb24 | 404 | send_block_to_session_bus(devc, i); |
b908f067 | 405 | |
6078d2c9 | 406 | dev_acquisition_stop(sdi, sdi); |
b908f067 | 407 | |
b908f067 UH |
408 | return TRUE; |
409 | } | |
410 | ||
6078d2c9 | 411 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 412 | { |
1644fb24 | 413 | struct dev_context *devc; |
b908f067 UH |
414 | uint8_t buf[4]; |
415 | int bytes_written; | |
416 | ||
e73ffd42 BV |
417 | if (sdi->status != SR_ST_ACTIVE) |
418 | return SR_ERR_DEV_CLOSED; | |
419 | ||
1644fb24 | 420 | if (!(devc = sdi->priv)) { |
f3a35908 | 421 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
422 | return SR_ERR_BUG; |
423 | } | |
424 | ||
1644fb24 | 425 | if (!devc->ftdic) { |
f3a35908 | 426 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
427 | return SR_ERR_BUG; |
428 | } | |
429 | ||
1644fb24 BV |
430 | devc->divcount = samplerate_to_divcount(devc->cur_samplerate); |
431 | if (devc->divcount == 0xff) { | |
f3a35908 | 432 | sr_err("%s: Invalid divcount/samplerate.", __func__); |
b908f067 UH |
433 | return SR_ERR; |
434 | } | |
435 | ||
014359e3 | 436 | if (configure_probes(sdi) != SR_OK) { |
f3a35908 | 437 | sr_err("Failed to configure probes."); |
014359e3 BV |
438 | return SR_ERR; |
439 | } | |
440 | ||
b908f067 | 441 | /* Fill acquisition parameters into buf[]. */ |
1644fb24 | 442 | buf[0] = devc->divcount; |
b908f067 | 443 | buf[1] = 0xff; /* This byte must always be 0xff. */ |
1644fb24 BV |
444 | buf[2] = devc->trigger_pattern; |
445 | buf[3] = devc->trigger_mask; | |
b908f067 UH |
446 | |
447 | /* Start acquisition. */ | |
1644fb24 | 448 | bytes_written = la8_write(devc, buf, 4); |
b908f067 UH |
449 | |
450 | if (bytes_written < 0) { | |
f3a35908 | 451 | sr_err("Acquisition failed to start: %d.", bytes_written); |
b908f067 UH |
452 | return SR_ERR; |
453 | } else if (bytes_written != 4) { | |
f3a35908 | 454 | sr_err("Acquisition failed to start: %d.", bytes_written); |
afc88319 | 455 | return SR_ERR; |
b908f067 UH |
456 | } |
457 | ||
4afdfd46 | 458 | sr_dbg("Hardware acquisition started successfully."); |
b908f067 | 459 | |
3e9b7f9c | 460 | devc->cb_data = cb_data; |
b908f067 UH |
461 | |
462 | /* Send header packet to the session bus. */ | |
29a27196 | 463 | std_session_send_df_header(cb_data, LOG_PREFIX); |
b908f067 | 464 | |
b908f067 | 465 | /* Time when we should be done (for detecting trigger timeouts). */ |
1644fb24 BV |
466 | devc->done = (devc->divcount + 1) * 0.08388608 + time(NULL) |
467 | + devc->trigger_timeout; | |
468 | devc->block_counter = 0; | |
469 | devc->trigger_found = 0; | |
b908f067 UH |
470 | |
471 | /* Hook up a dummy handler to receive data from the LA8. */ | |
3ffb6964 | 472 | sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); |
b908f067 UH |
473 | |
474 | return SR_OK; | |
475 | } | |
476 | ||
6078d2c9 | 477 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 478 | { |
b908f067 UH |
479 | struct sr_datafeed_packet packet; |
480 | ||
afc88319 | 481 | (void)sdi; |
b908f067 | 482 | |
f3a35908 | 483 | sr_dbg("Stopping acquisition."); |
7021f985 BV |
484 | sr_source_remove(-1); |
485 | ||
b908f067 | 486 | /* Send end packet to the session bus. */ |
f3a35908 | 487 | sr_dbg("Sending SR_DF_END."); |
b908f067 UH |
488 | packet.type = SR_DF_END; |
489 | sr_session_send(cb_data, &packet); | |
490 | ||
491 | return SR_OK; | |
492 | } | |
493 | ||
494 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = { | |
495 | .name = "chronovu-la8", | |
496 | .longname = "ChronoVu LA8", | |
497 | .api_version = 1, | |
6078d2c9 UH |
498 | .init = init, |
499 | .cleanup = cleanup, | |
500 | .scan = scan, | |
501 | .dev_list = dev_list, | |
3b412e3a | 502 | .dev_clear = dev_clear, |
035a1078 BV |
503 | .config_get = config_get, |
504 | .config_set = config_set, | |
a1c743fc | 505 | .config_list = config_list, |
6078d2c9 UH |
506 | .dev_open = dev_open, |
507 | .dev_close = dev_close, | |
508 | .dev_acquisition_start = dev_acquisition_start, | |
509 | .dev_acquisition_stop = dev_acquisition_stop, | |
1644fb24 | 510 | .priv = NULL, |
b908f067 | 511 | }; |