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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
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 3 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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "protocol.h" | |
21 | #include <libserialport.h> | |
22 | ||
23 | #define SERIALCOMM "115200/8n1" | |
24 | ||
25 | static const uint32_t drvopts[] = { | |
26 | SR_CONF_LOGIC_ANALYZER, | |
27 | }; | |
28 | ||
29 | static const uint32_t scanopts[] = { | |
30 | SR_CONF_CONN, | |
31 | SR_CONF_SERIALCOMM, | |
32 | }; | |
33 | ||
34 | static const uint32_t devopts[] = { | |
35 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
36 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
37 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
38 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
39 | SR_CONF_EXTERNAL_CLOCK | SR_CONF_SET, | |
40 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
41 | SR_CONF_SWAP | SR_CONF_SET, | |
42 | SR_CONF_RLE | SR_CONF_GET | SR_CONF_SET, | |
43 | }; | |
44 | ||
45 | static const int32_t trigger_matches[] = { | |
46 | SR_TRIGGER_ZERO, | |
47 | SR_TRIGGER_ONE, | |
48 | }; | |
49 | ||
50 | #define STR_PATTERN_NONE "None" | |
51 | #define STR_PATTERN_EXTERNAL "External" | |
52 | #define STR_PATTERN_INTERNAL "Internal" | |
53 | ||
54 | /* Supported methods of test pattern outputs */ | |
55 | enum { | |
56 | /** | |
57 | * Capture pins 31:16 (unbuffered wing) output a test pattern | |
58 | * that can captured on pins 0:15. | |
59 | */ | |
60 | PATTERN_EXTERNAL, | |
61 | ||
62 | /** Route test pattern internally to capture buffer. */ | |
63 | PATTERN_INTERNAL, | |
64 | }; | |
65 | ||
66 | static const char *patterns[] = { | |
67 | STR_PATTERN_NONE, | |
68 | STR_PATTERN_EXTERNAL, | |
69 | STR_PATTERN_INTERNAL, | |
70 | }; | |
71 | ||
72 | /* Channels are numbered 0-31 (on the PCB silkscreen). */ | |
73 | SR_PRIV const char *ols_channel_names[NUM_CHANNELS + 1] = { | |
74 | "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", | |
75 | "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", | |
76 | "24", "25", "26", "27", "28", "29", "30", "31", | |
77 | NULL, | |
78 | }; | |
79 | ||
80 | /* Default supported samplerates, can be overridden by device metadata. */ | |
81 | static const uint64_t samplerates[] = { | |
82 | SR_HZ(10), | |
83 | SR_MHZ(200), | |
84 | SR_HZ(1), | |
85 | }; | |
86 | ||
87 | SR_PRIV struct sr_dev_driver ols_driver_info; | |
88 | static struct sr_dev_driver *di = &ols_driver_info; | |
89 | ||
90 | static int init(struct sr_context *sr_ctx) | |
91 | { | |
92 | return std_init(sr_ctx, di, LOG_PREFIX); | |
93 | } | |
94 | ||
95 | static GSList *scan(GSList *options) | |
96 | { | |
97 | struct sr_config *src; | |
98 | struct sr_dev_inst *sdi; | |
99 | struct drv_context *drvc; | |
100 | struct dev_context *devc; | |
101 | struct sr_channel *ch; | |
102 | struct sr_serial_dev_inst *serial; | |
103 | GPollFD probefd; | |
104 | GSList *l, *devices; | |
105 | int ret, i; | |
106 | const char *conn, *serialcomm; | |
107 | char buf[8]; | |
108 | ||
109 | drvc = di->priv; | |
110 | ||
111 | devices = NULL; | |
112 | ||
113 | conn = serialcomm = NULL; | |
114 | for (l = options; l; l = l->next) { | |
115 | src = l->data; | |
116 | switch (src->key) { | |
117 | case SR_CONF_CONN: | |
118 | conn = g_variant_get_string(src->data, NULL); | |
119 | break; | |
120 | case SR_CONF_SERIALCOMM: | |
121 | serialcomm = g_variant_get_string(src->data, NULL); | |
122 | break; | |
123 | } | |
124 | } | |
125 | if (!conn) | |
126 | return NULL; | |
127 | ||
128 | if (serialcomm == NULL) | |
129 | serialcomm = SERIALCOMM; | |
130 | ||
131 | serial = sr_serial_dev_inst_new(conn, serialcomm); | |
132 | ||
133 | /* The discovery procedure is like this: first send the Reset | |
134 | * command (0x00) 5 times, since the device could be anywhere | |
135 | * in a 5-byte command. Then send the ID command (0x02). | |
136 | * If the device responds with 4 bytes ("OLS1" or "SLA1"), we | |
137 | * have a match. | |
138 | */ | |
139 | sr_info("Probing %s.", conn); | |
140 | if (serial_open(serial, SERIAL_RDWR) != SR_OK) | |
141 | return NULL; | |
142 | ||
143 | ret = SR_OK; | |
144 | for (i = 0; i < 5; i++) { | |
145 | if ((ret = send_shortcommand(serial, CMD_RESET)) != SR_OK) { | |
146 | sr_err("Port %s is not writable.", conn); | |
147 | break; | |
148 | } | |
149 | } | |
150 | if (ret != SR_OK) { | |
151 | serial_close(serial); | |
152 | sr_err("Could not use port %s. Quitting.", conn); | |
153 | return NULL; | |
154 | } | |
155 | send_shortcommand(serial, CMD_ID); | |
156 | ||
157 | /* Wait 10ms for a response. */ | |
158 | g_usleep(10000); | |
159 | ||
160 | sp_get_port_handle(serial->data, &probefd.fd); | |
161 | probefd.events = G_IO_IN; | |
162 | g_poll(&probefd, 1, 1); | |
163 | ||
164 | if (probefd.revents != G_IO_IN) | |
165 | return NULL; | |
166 | if (serial_read_blocking(serial, buf, 4, serial_timeout(serial, 4)) != 4) | |
167 | return NULL; | |
168 | if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) | |
169 | return NULL; | |
170 | ||
171 | /* Definitely using the OLS protocol, check if it supports | |
172 | * the metadata command. | |
173 | */ | |
174 | send_shortcommand(serial, CMD_METADATA); | |
175 | if (g_poll(&probefd, 1, 10) > 0) { | |
176 | /* Got metadata. */ | |
177 | sdi = get_metadata(serial); | |
178 | devc = sdi->priv; | |
179 | } else { | |
180 | /* Not an OLS -- some other board that uses the sump protocol. */ | |
181 | sr_info("Device does not support metadata."); | |
182 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
183 | sdi->status = SR_ST_INACTIVE; | |
184 | sdi->vendor = g_strdup("Sump"); | |
185 | sdi->model = g_strdup("Logic Analyzer"); | |
186 | sdi->version = g_strdup("v1.0"); | |
187 | sdi->driver = di; | |
188 | for (i = 0; i < 32; i++) { | |
189 | ch = sr_channel_new(i, SR_CHANNEL_LOGIC, TRUE, | |
190 | ols_channel_names[i]); | |
191 | sdi->channels = g_slist_append(sdi->channels, ch); | |
192 | } | |
193 | devc = ols_dev_new(); | |
194 | sdi->priv = devc; | |
195 | } | |
196 | /* Configure samplerate and divider. */ | |
197 | if (ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK) | |
198 | sr_dbg("Failed to set default samplerate (%"PRIu64").", | |
199 | DEFAULT_SAMPLERATE); | |
200 | sdi->inst_type = SR_INST_SERIAL; | |
201 | sdi->conn = serial; | |
202 | ||
203 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
204 | devices = g_slist_append(devices, sdi); | |
205 | ||
206 | serial_close(serial); | |
207 | ||
208 | return devices; | |
209 | } | |
210 | ||
211 | static GSList *dev_list(void) | |
212 | { | |
213 | return ((struct drv_context *)(di->priv))->instances; | |
214 | } | |
215 | ||
216 | static int cleanup(void) | |
217 | { | |
218 | return std_dev_clear(di, NULL); | |
219 | } | |
220 | ||
221 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
222 | const struct sr_channel_group *cg) | |
223 | { | |
224 | struct dev_context *devc; | |
225 | ||
226 | (void)cg; | |
227 | ||
228 | if (!sdi) | |
229 | return SR_ERR_ARG; | |
230 | ||
231 | devc = sdi->priv; | |
232 | switch (key) { | |
233 | case SR_CONF_SAMPLERATE: | |
234 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
235 | break; | |
236 | case SR_CONF_CAPTURE_RATIO: | |
237 | *data = g_variant_new_uint64(devc->capture_ratio); | |
238 | break; | |
239 | case SR_CONF_LIMIT_SAMPLES: | |
240 | *data = g_variant_new_uint64(devc->limit_samples); | |
241 | break; | |
242 | case SR_CONF_PATTERN_MODE: | |
243 | if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE) | |
244 | *data = g_variant_new_string(STR_PATTERN_EXTERNAL); | |
245 | else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE) | |
246 | *data = g_variant_new_string(STR_PATTERN_INTERNAL); | |
247 | else | |
248 | *data = g_variant_new_string(STR_PATTERN_NONE); | |
249 | break; | |
250 | case SR_CONF_RLE: | |
251 | *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE); | |
252 | break; | |
253 | default: | |
254 | return SR_ERR_NA; | |
255 | } | |
256 | ||
257 | return SR_OK; | |
258 | } | |
259 | ||
260 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
261 | const struct sr_channel_group *cg) | |
262 | { | |
263 | struct dev_context *devc; | |
264 | uint16_t flag; | |
265 | uint64_t tmp_u64; | |
266 | int ret; | |
267 | const char *stropt; | |
268 | ||
269 | (void)cg; | |
270 | ||
271 | if (sdi->status != SR_ST_ACTIVE) | |
272 | return SR_ERR_DEV_CLOSED; | |
273 | ||
274 | devc = sdi->priv; | |
275 | ||
276 | switch (key) { | |
277 | case SR_CONF_SAMPLERATE: | |
278 | tmp_u64 = g_variant_get_uint64(data); | |
279 | if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1]) | |
280 | return SR_ERR_SAMPLERATE; | |
281 | ret = ols_set_samplerate(sdi, g_variant_get_uint64(data)); | |
282 | break; | |
283 | case SR_CONF_LIMIT_SAMPLES: | |
284 | tmp_u64 = g_variant_get_uint64(data); | |
285 | if (tmp_u64 < MIN_NUM_SAMPLES) | |
286 | return SR_ERR; | |
287 | devc->limit_samples = tmp_u64; | |
288 | ret = SR_OK; | |
289 | break; | |
290 | case SR_CONF_CAPTURE_RATIO: | |
291 | devc->capture_ratio = g_variant_get_uint64(data); | |
292 | if (devc->capture_ratio < 0 || devc->capture_ratio > 100) { | |
293 | devc->capture_ratio = 0; | |
294 | ret = SR_ERR; | |
295 | } else | |
296 | ret = SR_OK; | |
297 | break; | |
298 | case SR_CONF_EXTERNAL_CLOCK: | |
299 | if (g_variant_get_boolean(data)) { | |
300 | sr_info("Enabling external clock."); | |
301 | devc->flag_reg |= FLAG_CLOCK_EXTERNAL; | |
302 | } else { | |
303 | sr_info("Disabled external clock."); | |
304 | devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL; | |
305 | } | |
306 | ret = SR_OK; | |
307 | break; | |
308 | case SR_CONF_PATTERN_MODE: | |
309 | stropt = g_variant_get_string(data, NULL); | |
310 | ret = SR_OK; | |
311 | flag = 0xffff; | |
312 | if (!strcmp(stropt, STR_PATTERN_NONE)) { | |
313 | sr_info("Disabling test modes."); | |
314 | flag = 0x0000; | |
315 | }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) { | |
316 | sr_info("Enabling internal test mode."); | |
317 | flag = FLAG_INTERNAL_TEST_MODE; | |
318 | } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) { | |
319 | sr_info("Enabling external test mode."); | |
320 | flag = FLAG_EXTERNAL_TEST_MODE; | |
321 | } else { | |
322 | ret = SR_ERR; | |
323 | } | |
324 | if (flag != 0xffff) { | |
325 | devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE); | |
326 | devc->flag_reg |= flag; | |
327 | } | |
328 | break; | |
329 | case SR_CONF_SWAP: | |
330 | if (g_variant_get_boolean(data)) { | |
331 | sr_info("Enabling channel swapping."); | |
332 | devc->flag_reg |= FLAG_SWAP_CHANNELS; | |
333 | } else { | |
334 | sr_info("Disabling channel swapping."); | |
335 | devc->flag_reg &= ~FLAG_SWAP_CHANNELS; | |
336 | } | |
337 | ret = SR_OK; | |
338 | break; | |
339 | ||
340 | case SR_CONF_RLE: | |
341 | if (g_variant_get_boolean(data)) { | |
342 | sr_info("Enabling RLE."); | |
343 | devc->flag_reg |= FLAG_RLE; | |
344 | } else { | |
345 | sr_info("Disabling RLE."); | |
346 | devc->flag_reg &= ~FLAG_RLE; | |
347 | } | |
348 | ret = SR_OK; | |
349 | break; | |
350 | default: | |
351 | ret = SR_ERR_NA; | |
352 | } | |
353 | ||
354 | return ret; | |
355 | } | |
356 | ||
357 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
358 | const struct sr_channel_group *cg) | |
359 | { | |
360 | struct dev_context *devc; | |
361 | GVariant *gvar, *grange[2]; | |
362 | GVariantBuilder gvb; | |
363 | int num_ols_changrp, i; | |
364 | ||
365 | (void)cg; | |
366 | ||
367 | switch (key) { | |
368 | case SR_CONF_SCAN_OPTIONS: | |
369 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
370 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
371 | break; | |
372 | case SR_CONF_DEVICE_OPTIONS: | |
373 | if (!sdi) | |
374 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
375 | drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t)); | |
376 | else | |
377 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
378 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
379 | break; | |
380 | case SR_CONF_SAMPLERATE: | |
381 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
382 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
383 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
384 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
385 | *data = g_variant_builder_end(&gvb); | |
386 | break; | |
387 | case SR_CONF_TRIGGER_MATCH: | |
388 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
389 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
390 | sizeof(int32_t)); | |
391 | break; | |
392 | case SR_CONF_PATTERN_MODE: | |
393 | *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns)); | |
394 | break; | |
395 | case SR_CONF_LIMIT_SAMPLES: | |
396 | if (!sdi) | |
397 | return SR_ERR_ARG; | |
398 | devc = sdi->priv; | |
399 | if (devc->flag_reg & FLAG_RLE) | |
400 | return SR_ERR_NA; | |
401 | if (devc->max_samples == 0) | |
402 | /* Device didn't specify sample memory size in metadata. */ | |
403 | return SR_ERR_NA; | |
404 | /* | |
405 | * Channel groups are turned off if no channels in that group are | |
406 | * enabled, making more room for samples for the enabled group. | |
407 | */ | |
408 | ols_channel_mask(sdi); | |
409 | num_ols_changrp = 0; | |
410 | for (i = 0; i < 4; i++) { | |
411 | if (devc->channel_mask & (0xff << (i * 8))) | |
412 | num_ols_changrp++; | |
413 | } | |
414 | grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES); | |
415 | if (num_ols_changrp) | |
416 | grange[1] = g_variant_new_uint64(devc->max_samples / num_ols_changrp); | |
417 | else | |
418 | grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES); | |
419 | *data = g_variant_new_tuple(grange, 2); | |
420 | break; | |
421 | default: | |
422 | return SR_ERR_NA; | |
423 | } | |
424 | ||
425 | return SR_OK; | |
426 | } | |
427 | ||
428 | static int set_trigger(const struct sr_dev_inst *sdi, int stage) | |
429 | { | |
430 | struct dev_context *devc; | |
431 | struct sr_serial_dev_inst *serial; | |
432 | uint8_t cmd, arg[4]; | |
433 | ||
434 | devc = sdi->priv; | |
435 | serial = sdi->conn; | |
436 | ||
437 | cmd = CMD_SET_TRIGGER_MASK + stage * 4; | |
438 | arg[0] = devc->trigger_mask[stage] & 0xff; | |
439 | arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff; | |
440 | arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff; | |
441 | arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff; | |
442 | if (send_longcommand(serial, cmd, arg) != SR_OK) | |
443 | return SR_ERR; | |
444 | ||
445 | cmd = CMD_SET_TRIGGER_VALUE + stage * 4; | |
446 | arg[0] = devc->trigger_value[stage] & 0xff; | |
447 | arg[1] = (devc->trigger_value[stage] >> 8) & 0xff; | |
448 | arg[2] = (devc->trigger_value[stage] >> 16) & 0xff; | |
449 | arg[3] = (devc->trigger_value[stage] >> 24) & 0xff; | |
450 | if (send_longcommand(serial, cmd, arg) != SR_OK) | |
451 | return SR_ERR; | |
452 | ||
453 | cmd = CMD_SET_TRIGGER_CONFIG + stage * 4; | |
454 | arg[0] = arg[1] = arg[3] = 0x00; | |
455 | arg[2] = stage; | |
456 | if (stage == devc->num_stages) | |
457 | /* Last stage, fire when this one matches. */ | |
458 | arg[3] |= TRIGGER_START; | |
459 | if (send_longcommand(serial, cmd, arg) != SR_OK) | |
460 | return SR_ERR; | |
461 | ||
462 | return SR_OK; | |
463 | } | |
464 | ||
465 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, | |
466 | void *cb_data) | |
467 | { | |
468 | struct dev_context *devc; | |
469 | struct sr_serial_dev_inst *serial; | |
470 | uint16_t samplecount, readcount, delaycount; | |
471 | uint8_t ols_changrp_mask, arg[4]; | |
472 | int num_ols_changrp; | |
473 | int ret, i; | |
474 | ||
475 | if (sdi->status != SR_ST_ACTIVE) | |
476 | return SR_ERR_DEV_CLOSED; | |
477 | ||
478 | devc = sdi->priv; | |
479 | serial = sdi->conn; | |
480 | ||
481 | ols_channel_mask(sdi); | |
482 | ||
483 | num_ols_changrp = 0; | |
484 | ols_changrp_mask = 0; | |
485 | for (i = 0; i < 4; i++) { | |
486 | if (devc->channel_mask & (0xff << (i * 8))) { | |
487 | ols_changrp_mask |= (1 << i); | |
488 | num_ols_changrp++; | |
489 | } | |
490 | } | |
491 | ||
492 | /* | |
493 | * Limit readcount to prevent reading past the end of the hardware | |
494 | * buffer. | |
495 | */ | |
496 | samplecount = MIN(devc->max_samples / num_ols_changrp, devc->limit_samples); | |
497 | readcount = samplecount / 4; | |
498 | ||
499 | /* Rather read too many samples than too few. */ | |
500 | if (samplecount % 4 != 0) | |
501 | readcount++; | |
502 | ||
503 | /* Basic triggers. */ | |
504 | if (ols_convert_trigger(sdi) != SR_OK) { | |
505 | sr_err("Failed to configure channels."); | |
506 | return SR_ERR; | |
507 | } | |
508 | if (devc->num_stages > 0) { | |
509 | delaycount = readcount * (1 - devc->capture_ratio / 100.0); | |
510 | devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages; | |
511 | for (i = 0; i <= devc->num_stages; i++) { | |
512 | sr_dbg("Setting OLS stage %d trigger.", i); | |
513 | if ((ret = set_trigger(sdi, i)) != SR_OK) | |
514 | return ret; | |
515 | } | |
516 | } else { | |
517 | /* No triggers configured, force trigger on first stage. */ | |
518 | sr_dbg("Forcing trigger at stage 0."); | |
519 | if ((ret = set_trigger(sdi, 0)) != SR_OK) | |
520 | return ret; | |
521 | delaycount = readcount; | |
522 | } | |
523 | ||
524 | /* Samplerate. */ | |
525 | sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)", | |
526 | devc->cur_samplerate, devc->cur_samplerate_divider); | |
527 | arg[0] = devc->cur_samplerate_divider & 0xff; | |
528 | arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8; | |
529 | arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16; | |
530 | arg[3] = 0x00; | |
531 | if (send_longcommand(serial, CMD_SET_DIVIDER, arg) != SR_OK) | |
532 | return SR_ERR; | |
533 | ||
534 | /* Send sample limit and pre/post-trigger capture ratio. */ | |
535 | sr_dbg("Setting sample limit %d, trigger point at %d", | |
536 | (readcount - 1) * 4, (delaycount - 1) * 4); | |
537 | arg[0] = ((readcount - 1) & 0xff); | |
538 | arg[1] = ((readcount - 1) & 0xff00) >> 8; | |
539 | arg[2] = ((delaycount - 1) & 0xff); | |
540 | arg[3] = ((delaycount - 1) & 0xff00) >> 8; | |
541 | if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK) | |
542 | return SR_ERR; | |
543 | ||
544 | /* Flag register. */ | |
545 | sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s", | |
546 | devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off", | |
547 | devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off", | |
548 | devc->flag_reg & FLAG_RLE ? "on" : "off", | |
549 | devc->flag_reg & FLAG_FILTER ? "on": "off", | |
550 | devc->flag_reg & FLAG_DEMUX ? "on" : "off"); | |
551 | /* | |
552 | * Enable/disable OLS channel groups in the flag register according | |
553 | * to the channel mask. 1 means "disable channel". | |
554 | */ | |
555 | devc->flag_reg |= ~(ols_changrp_mask << 2) & 0x3c; | |
556 | arg[0] = devc->flag_reg & 0xff; | |
557 | arg[1] = devc->flag_reg >> 8; | |
558 | arg[2] = arg[3] = 0x00; | |
559 | if (send_longcommand(serial, CMD_SET_FLAGS, arg) != SR_OK) | |
560 | return SR_ERR; | |
561 | ||
562 | /* Start acquisition on the device. */ | |
563 | if (send_shortcommand(serial, CMD_RUN) != SR_OK) | |
564 | return SR_ERR; | |
565 | ||
566 | /* Reset all operational states. */ | |
567 | devc->rle_count = devc->num_transfers = 0; | |
568 | devc->num_samples = devc->num_bytes = 0; | |
569 | devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0; | |
570 | memset(devc->sample, 0, 4); | |
571 | ||
572 | /* Send header packet to the session bus. */ | |
573 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
574 | ||
575 | serial_source_add(sdi->session, serial, G_IO_IN, -1, | |
576 | ols_receive_data, cb_data); | |
577 | ||
578 | return SR_OK; | |
579 | } | |
580 | ||
581 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
582 | { | |
583 | (void)cb_data; | |
584 | ||
585 | abort_acquisition(sdi); | |
586 | ||
587 | return SR_OK; | |
588 | } | |
589 | ||
590 | SR_PRIV struct sr_dev_driver ols_driver_info = { | |
591 | .name = "ols", | |
592 | .longname = "Openbench Logic Sniffer", | |
593 | .api_version = 1, | |
594 | .init = init, | |
595 | .cleanup = cleanup, | |
596 | .scan = scan, | |
597 | .dev_list = dev_list, | |
598 | .dev_clear = NULL, | |
599 | .config_get = config_get, | |
600 | .config_set = config_set, | |
601 | .config_list = config_list, | |
602 | .dev_open = std_serial_dev_open, | |
603 | .dev_close = std_serial_dev_close, | |
604 | .dev_acquisition_start = dev_acquisition_start, | |
605 | .dev_acquisition_stop = dev_acquisition_stop, | |
606 | .priv = NULL, | |
607 | }; |