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Commit | Line | Data |
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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. */ | |
14563512 | 45 | SR_CONF_MAX_UNCOMPRESSED_SAMPLES, |
1bec72d2 BV |
46 | }; |
47 | ||
74e5f12d UH |
48 | /* |
49 | * The ChronoVu LA8 can have multiple PIDs. Older versions shipped with | |
50 | * a standard FTDI USB VID/PID of 0403:6001, newer ones have 0403:8867. | |
51 | */ | |
52 | static const uint16_t usb_pids[] = { | |
53 | 0x6001, | |
54 | 0x8867, | |
55 | }; | |
56 | ||
b908f067 | 57 | /* Function prototypes. */ |
6078d2c9 | 58 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); |
b908f067 | 59 | |
97900799 | 60 | static void clear_helper(void *priv) |
c4f3ed4b | 61 | { |
1644fb24 | 62 | struct dev_context *devc; |
97900799 UH |
63 | |
64 | devc = priv; | |
1644fb24 | 65 | |
97900799 UH |
66 | ftdi_free(devc->ftdic); |
67 | g_free(devc->final_buf); | |
68 | } | |
c4f3ed4b | 69 | |
3b412e3a | 70 | static int dev_clear(void) |
97900799 UH |
71 | { |
72 | return std_dev_clear(di, clear_helper); | |
c4f3ed4b BV |
73 | } |
74 | ||
6078d2c9 | 75 | static int init(struct sr_context *sr_ctx) |
61136ea6 | 76 | { |
f6beaac5 | 77 | return std_init(sr_ctx, di, LOG_PREFIX); |
61136ea6 BV |
78 | } |
79 | ||
6078d2c9 | 80 | static GSList *scan(GSList *options) |
b908f067 | 81 | { |
b908f067 | 82 | struct sr_dev_inst *sdi; |
87ca93c5 | 83 | struct sr_probe *probe; |
1644fb24 BV |
84 | struct drv_context *drvc; |
85 | struct dev_context *devc; | |
c4f3ed4b | 86 | GSList *devices; |
9c4311c5 BV |
87 | unsigned int i; |
88 | int ret; | |
c4f3ed4b BV |
89 | |
90 | (void)options; | |
f3a35908 UH |
91 | |
92 | drvc = di->priv; | |
4b97c74e | 93 | |
c4f3ed4b | 94 | devices = NULL; |
b908f067 | 95 | |
1644fb24 BV |
96 | /* Allocate memory for our private device context. */ |
97 | if (!(devc = g_try_malloc(sizeof(struct dev_context)))) { | |
f3a35908 | 98 | sr_err("Device context malloc failed."); |
b908f067 UH |
99 | goto err_free_nothing; |
100 | } | |
101 | ||
102 | /* Set some sane defaults. */ | |
1644fb24 BV |
103 | devc->ftdic = NULL; |
104 | devc->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
105 | devc->limit_msec = 0; | |
106 | devc->limit_samples = 0; | |
3e9b7f9c | 107 | devc->cb_data = NULL; |
1644fb24 BV |
108 | memset(devc->mangled_buf, 0, BS); |
109 | devc->final_buf = NULL; | |
110 | devc->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
111 | devc->trigger_mask = 0x00; /* All probes are "don't care". */ | |
112 | devc->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
113 | devc->trigger_found = 0; | |
114 | devc->done = 0; | |
115 | devc->block_counter = 0; | |
116 | devc->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
117 | devc->usb_pid = 0; | |
b908f067 UH |
118 | |
119 | /* Allocate memory where we'll store the de-mangled data. */ | |
1644fb24 | 120 | if (!(devc->final_buf = g_try_malloc(SDRAM_SIZE))) { |
f3a35908 | 121 | sr_err("final_buf malloc failed."); |
1644fb24 | 122 | goto err_free_devc; |
b908f067 UH |
123 | } |
124 | ||
125 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
1644fb24 | 126 | if (!(devc->ftdic = ftdi_new())) { |
f3a35908 | 127 | sr_err("%s: ftdi_new failed.", __func__); |
b908f067 UH |
128 | goto err_free_final_buf; |
129 | } | |
130 | ||
131 | /* Check for the device and temporarily open it. */ | |
74e5f12d | 132 | for (i = 0; i < ARRAY_SIZE(usb_pids); i++) { |
f3a35908 | 133 | sr_dbg("Probing for VID/PID %04x:%04x.", USB_VENDOR_ID, |
74e5f12d | 134 | usb_pids[i]); |
1644fb24 | 135 | ret = ftdi_usb_open_desc(devc->ftdic, USB_VENDOR_ID, |
74e5f12d UH |
136 | usb_pids[i], USB_DESCRIPTION, NULL); |
137 | if (ret == 0) { | |
f3a35908 | 138 | sr_dbg("Found LA8 device (%04x:%04x).", |
74e5f12d | 139 | USB_VENDOR_ID, usb_pids[i]); |
1644fb24 | 140 | devc->usb_pid = usb_pids[i]; |
74e5f12d | 141 | } |
b908f067 | 142 | } |
74e5f12d | 143 | |
1644fb24 | 144 | if (devc->usb_pid == 0) |
74e5f12d | 145 | goto err_free_ftdic; |
b908f067 UH |
146 | |
147 | /* Register the device with libsigrok. */ | |
148 | sdi = sr_dev_inst_new(0, SR_ST_INITIALIZING, | |
149 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
150 | if (!sdi) { | |
f3a35908 | 151 | sr_err("%s: sr_dev_inst_new failed.", __func__); |
b908f067 UH |
152 | goto err_close_ftdic; |
153 | } | |
f3a35908 | 154 | sdi->driver = di; |
1644fb24 | 155 | sdi->priv = devc; |
b908f067 | 156 | |
1bec72d2 | 157 | for (i = 0; chronovu_la8_probe_names[i]; i++) { |
de6e0eca | 158 | if (!(probe = sr_probe_new(i, SR_PROBE_LOGIC, TRUE, |
1bec72d2 | 159 | chronovu_la8_probe_names[i]))) |
87ca93c5 BV |
160 | return NULL; |
161 | sdi->probes = g_slist_append(sdi->probes, probe); | |
162 | } | |
163 | ||
c4f3ed4b | 164 | devices = g_slist_append(devices, sdi); |
1644fb24 | 165 | drvc->instances = g_slist_append(drvc->instances, sdi); |
b908f067 | 166 | |
b908f067 | 167 | /* Close device. We'll reopen it again when we need it. */ |
1644fb24 | 168 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 169 | |
c4f3ed4b | 170 | return devices; |
b908f067 UH |
171 | |
172 | err_close_ftdic: | |
1644fb24 | 173 | (void) la8_close(devc); /* Log, but ignore errors. */ |
b908f067 | 174 | err_free_ftdic: |
4f9bf9a2 | 175 | ftdi_free(devc->ftdic); /* NOT free() or g_free()! */ |
b908f067 | 176 | err_free_final_buf: |
1644fb24 BV |
177 | g_free(devc->final_buf); |
178 | err_free_devc: | |
179 | g_free(devc); | |
b908f067 UH |
180 | err_free_nothing: |
181 | ||
c4f3ed4b | 182 | return NULL; |
b908f067 UH |
183 | } |
184 | ||
6078d2c9 | 185 | static GSList *dev_list(void) |
811deee4 | 186 | { |
0e94d524 | 187 | return ((struct drv_context *)(di->priv))->instances; |
811deee4 BV |
188 | } |
189 | ||
6078d2c9 | 190 | static int 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)) { |
f3a35908 | 196 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
197 | return SR_ERR_BUG; |
198 | } | |
199 | ||
f3a35908 | 200 | sr_dbg("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) { | |
f3a35908 | 206 | sr_err("%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 | } | |
f3a35908 | 211 | sr_dbg("Device opened successfully."); |
b908f067 UH |
212 | |
213 | /* Purge RX/TX buffers in the FTDI chip. */ | |
1644fb24 | 214 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) { |
f3a35908 | 215 | sr_err("%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 | } | |
f3a35908 | 220 | sr_dbg("FTDI buffers purged successfully."); |
b908f067 UH |
221 | |
222 | /* Enable flow control in the FTDI chip. */ | |
1644fb24 | 223 | if ((ret = ftdi_setflowctrl(devc->ftdic, SIO_RTS_CTS_HS)) < 0) { |
f3a35908 | 224 | sr_err("%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 | } | |
f3a35908 | 229 | sr_dbg("FTDI flow control enabled successfully."); |
b908f067 UH |
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 | ||
6078d2c9 | 243 | static int dev_close(struct sr_dev_inst *sdi) |
b908f067 | 244 | { |
1644fb24 | 245 | struct dev_context *devc; |
b908f067 | 246 | |
961009b0 | 247 | devc = sdi->priv; |
b908f067 UH |
248 | |
249 | if (sdi->status == SR_ST_ACTIVE) { | |
f3a35908 | 250 | sr_dbg("Status ACTIVE, closing device."); |
1644fb24 | 251 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 | 252 | } else { |
f3a35908 | 253 | sr_spew("Status not ACTIVE, nothing to do."); |
b908f067 UH |
254 | } |
255 | ||
256 | sdi->status = SR_ST_INACTIVE; | |
257 | ||
b908f067 UH |
258 | return SR_OK; |
259 | } | |
260 | ||
6078d2c9 | 261 | static int cleanup(void) |
b908f067 | 262 | { |
3b412e3a | 263 | return dev_clear(); |
b908f067 UH |
264 | } |
265 | ||
8f996b89 ML |
266 | static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi, |
267 | const struct sr_probe_group *probe_group) | |
b908f067 | 268 | { |
1644fb24 | 269 | struct dev_context *devc; |
b908f067 | 270 | |
8f996b89 ML |
271 | (void)probe_group; |
272 | ||
035a1078 | 273 | switch (id) { |
123e1313 | 274 | case SR_CONF_SAMPLERATE: |
6a2761fd | 275 | if (sdi) { |
1644fb24 | 276 | devc = sdi->priv; |
1bec72d2 | 277 | *data = g_variant_new_uint64(devc->cur_samplerate); |
f3a35908 | 278 | sr_spew("%s: Returning samplerate: %" PRIu64 "Hz.", |
1644fb24 | 279 | __func__, devc->cur_samplerate); |
6a2761fd BV |
280 | } else |
281 | return SR_ERR; | |
b908f067 | 282 | break; |
14563512 BV |
283 | case SR_CONF_MAX_UNCOMPRESSED_SAMPLES: |
284 | *data = g_variant_new_uint64(MAX_NUM_SAMPLES); | |
285 | break; | |
cfe8a84d | 286 | default: |
bd6fbf62 | 287 | return SR_ERR_NA; |
b908f067 UH |
288 | } |
289 | ||
6a2761fd | 290 | return SR_OK; |
b908f067 UH |
291 | } |
292 | ||
8f996b89 ML |
293 | static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi, |
294 | const struct sr_probe_group *probe_group) | |
b908f067 | 295 | { |
1644fb24 | 296 | struct dev_context *devc; |
b908f067 | 297 | |
8f996b89 ML |
298 | (void)probe_group; |
299 | ||
e73ffd42 BV |
300 | if (sdi->status != SR_ST_ACTIVE) |
301 | return SR_ERR_DEV_CLOSED; | |
302 | ||
1644fb24 | 303 | if (!(devc = sdi->priv)) { |
f3a35908 | 304 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
305 | return SR_ERR_BUG; |
306 | } | |
307 | ||
035a1078 | 308 | switch (id) { |
1953564a | 309 | case SR_CONF_SAMPLERATE: |
1bec72d2 | 310 | if (set_samplerate(sdi, g_variant_get_uint64(data)) == SR_ERR) { |
f3a35908 | 311 | sr_err("%s: setting samplerate failed.", __func__); |
b908f067 UH |
312 | return SR_ERR; |
313 | } | |
f3a35908 | 314 | sr_dbg("SAMPLERATE = %" PRIu64, devc->cur_samplerate); |
b908f067 | 315 | break; |
1953564a | 316 | case SR_CONF_LIMIT_MSEC: |
1bec72d2 | 317 | if (g_variant_get_uint64(data) == 0) { |
f3a35908 | 318 | sr_err("%s: LIMIT_MSEC can't be 0.", __func__); |
b908f067 UH |
319 | return SR_ERR; |
320 | } | |
1bec72d2 | 321 | devc->limit_msec = g_variant_get_uint64(data); |
f3a35908 | 322 | sr_dbg("LIMIT_MSEC = %" PRIu64, devc->limit_msec); |
b908f067 | 323 | break; |
1953564a | 324 | case SR_CONF_LIMIT_SAMPLES: |
1bec72d2 | 325 | if (g_variant_get_uint64(data) < MIN_NUM_SAMPLES) { |
f3a35908 | 326 | sr_err("%s: LIMIT_SAMPLES too small.", __func__); |
b908f067 UH |
327 | return SR_ERR; |
328 | } | |
1bec72d2 | 329 | devc->limit_samples = g_variant_get_uint64(data); |
f3a35908 | 330 | sr_dbg("LIMIT_SAMPLES = %" PRIu64, devc->limit_samples); |
b908f067 UH |
331 | break; |
332 | default: | |
bd6fbf62 | 333 | return SR_ERR_NA; |
b908f067 UH |
334 | } |
335 | ||
336 | return SR_OK; | |
337 | } | |
338 | ||
8f996b89 ML |
339 | static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi, |
340 | const struct sr_probe_group *probe_group) | |
a1c743fc | 341 | { |
1bec72d2 BV |
342 | GVariant *gvar; |
343 | GVariantBuilder gvb; | |
a1c743fc BV |
344 | |
345 | (void)sdi; | |
8f996b89 | 346 | (void)probe_group; |
a1c743fc BV |
347 | |
348 | switch (key) { | |
9a6517d1 | 349 | case SR_CONF_DEVICE_OPTIONS: |
1bec72d2 | 350 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, |
415e6389 UH |
351 | chronovu_la8_hwcaps, |
352 | ARRAY_SIZE(chronovu_la8_hwcaps), | |
1bec72d2 | 353 | sizeof(int32_t)); |
9a6517d1 | 354 | break; |
a1c743fc BV |
355 | case SR_CONF_SAMPLERATE: |
356 | fill_supported_samplerates_if_needed(); | |
1bec72d2 BV |
357 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); |
358 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
415e6389 UH |
359 | chronovu_la8_samplerates, |
360 | ARRAY_SIZE(chronovu_la8_samplerates), | |
1bec72d2 BV |
361 | sizeof(uint64_t)); |
362 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
363 | *data = g_variant_builder_end(&gvb); | |
a1c743fc | 364 | break; |
c50277a6 | 365 | case SR_CONF_TRIGGER_TYPE: |
1bec72d2 | 366 | *data = g_variant_new_string(TRIGGER_TYPE); |
c50277a6 | 367 | break; |
a1c743fc | 368 | default: |
bd6fbf62 | 369 | return SR_ERR_NA; |
a1c743fc BV |
370 | } |
371 | ||
372 | return SR_OK; | |
373 | } | |
374 | ||
b908f067 UH |
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 | 380 | |
b908f067 UH |
381 | (void)fd; |
382 | (void)revents; | |
383 | ||
384 | if (!(sdi = cb_data)) { | |
f3a35908 | 385 | sr_err("%s: cb_data was NULL.", __func__); |
b908f067 UH |
386 | return FALSE; |
387 | } | |
388 | ||
1644fb24 | 389 | if (!(devc = sdi->priv)) { |
f3a35908 | 390 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
391 | return FALSE; |
392 | } | |
393 | ||
1644fb24 | 394 | if (!devc->ftdic) { |
f3a35908 | 395 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
396 | return FALSE; |
397 | } | |
398 | ||
399 | /* Get one block of data. */ | |
1644fb24 | 400 | if ((ret = la8_read_block(devc)) < 0) { |
f3a35908 | 401 | sr_err("%s: la8_read_block error: %d.", __func__, ret); |
6078d2c9 | 402 | dev_acquisition_stop(sdi, sdi); |
b908f067 UH |
403 | return FALSE; |
404 | } | |
405 | ||
406 | /* We need to get exactly NUM_BLOCKS blocks (i.e. 8MB) of data. */ | |
1644fb24 BV |
407 | if (devc->block_counter != (NUM_BLOCKS - 1)) { |
408 | devc->block_counter++; | |
b908f067 UH |
409 | return TRUE; |
410 | } | |
411 | ||
f3a35908 | 412 | sr_dbg("Sampling finished, sending data to session bus now."); |
b908f067 UH |
413 | |
414 | /* All data was received and demangled, send it to the session bus. */ | |
415 | for (i = 0; i < NUM_BLOCKS; i++) | |
1644fb24 | 416 | send_block_to_session_bus(devc, i); |
b908f067 | 417 | |
6078d2c9 | 418 | dev_acquisition_stop(sdi, sdi); |
b908f067 | 419 | |
b908f067 UH |
420 | return TRUE; |
421 | } | |
422 | ||
6078d2c9 | 423 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 424 | { |
1644fb24 | 425 | struct dev_context *devc; |
b908f067 UH |
426 | uint8_t buf[4]; |
427 | int bytes_written; | |
428 | ||
e73ffd42 BV |
429 | if (sdi->status != SR_ST_ACTIVE) |
430 | return SR_ERR_DEV_CLOSED; | |
431 | ||
1644fb24 | 432 | if (!(devc = sdi->priv)) { |
f3a35908 | 433 | sr_err("%s: sdi->priv was NULL.", __func__); |
b908f067 UH |
434 | return SR_ERR_BUG; |
435 | } | |
436 | ||
1644fb24 | 437 | if (!devc->ftdic) { |
f3a35908 | 438 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
439 | return SR_ERR_BUG; |
440 | } | |
441 | ||
1644fb24 BV |
442 | devc->divcount = samplerate_to_divcount(devc->cur_samplerate); |
443 | if (devc->divcount == 0xff) { | |
f3a35908 | 444 | sr_err("%s: Invalid divcount/samplerate.", __func__); |
b908f067 UH |
445 | return SR_ERR; |
446 | } | |
447 | ||
014359e3 | 448 | if (configure_probes(sdi) != SR_OK) { |
f3a35908 | 449 | sr_err("Failed to configure probes."); |
014359e3 BV |
450 | return SR_ERR; |
451 | } | |
452 | ||
b908f067 | 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) { | |
f3a35908 | 463 | sr_err("Acquisition failed to start: %d.", bytes_written); |
b908f067 UH |
464 | return SR_ERR; |
465 | } else if (bytes_written != 4) { | |
f3a35908 | 466 | sr_err("Acquisition failed to start: %d.", bytes_written); |
afc88319 | 467 | return SR_ERR; |
b908f067 UH |
468 | } |
469 | ||
4afdfd46 | 470 | sr_dbg("Hardware acquisition started successfully."); |
b908f067 | 471 | |
3e9b7f9c | 472 | devc->cb_data = cb_data; |
b908f067 UH |
473 | |
474 | /* Send header packet to the session bus. */ | |
29a27196 | 475 | std_session_send_df_header(cb_data, LOG_PREFIX); |
b908f067 | 476 | |
b908f067 | 477 | /* Time when we should be done (for detecting trigger timeouts). */ |
1644fb24 BV |
478 | devc->done = (devc->divcount + 1) * 0.08388608 + time(NULL) |
479 | + devc->trigger_timeout; | |
480 | devc->block_counter = 0; | |
481 | devc->trigger_found = 0; | |
b908f067 UH |
482 | |
483 | /* Hook up a dummy handler to receive data from the LA8. */ | |
3ffb6964 | 484 | sr_source_add(-1, G_IO_IN, 0, receive_data, (void *)sdi); |
b908f067 UH |
485 | |
486 | return SR_OK; | |
487 | } | |
488 | ||
6078d2c9 | 489 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) |
b908f067 | 490 | { |
b908f067 UH |
491 | struct sr_datafeed_packet packet; |
492 | ||
afc88319 | 493 | (void)sdi; |
b908f067 | 494 | |
f3a35908 | 495 | sr_dbg("Stopping acquisition."); |
7021f985 BV |
496 | sr_source_remove(-1); |
497 | ||
b908f067 | 498 | /* Send end packet to the session bus. */ |
f3a35908 | 499 | sr_dbg("Sending SR_DF_END."); |
b908f067 UH |
500 | packet.type = SR_DF_END; |
501 | sr_session_send(cb_data, &packet); | |
502 | ||
503 | return SR_OK; | |
504 | } | |
505 | ||
506 | SR_PRIV struct sr_dev_driver chronovu_la8_driver_info = { | |
507 | .name = "chronovu-la8", | |
508 | .longname = "ChronoVu LA8", | |
509 | .api_version = 1, | |
6078d2c9 UH |
510 | .init = init, |
511 | .cleanup = cleanup, | |
512 | .scan = scan, | |
513 | .dev_list = dev_list, | |
3b412e3a | 514 | .dev_clear = dev_clear, |
035a1078 BV |
515 | .config_get = config_get, |
516 | .config_set = config_set, | |
a1c743fc | 517 | .config_list = config_list, |
6078d2c9 UH |
518 | .dev_open = dev_open, |
519 | .dev_close = dev_close, | |
520 | .dev_acquisition_start = dev_acquisition_start, | |
521 | .dev_acquisition_stop = dev_acquisition_stop, | |
1644fb24 | 522 | .priv = NULL, |
b908f067 | 523 | }; |