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4bd80e12 | 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 | ||
f254bc4b | 22 | static const uint32_t devopts[] = { |
4bd80e12 | 23 | SR_CONF_LOGIC_ANALYZER, |
5827f61b BV |
24 | SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, |
25 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
26 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
27 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
28 | SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
29 | SR_CONF_EXTERNAL_CLOCK | SR_CONF_GET | SR_CONF_SET, | |
30 | SR_CONF_SWAP | SR_CONF_SET, | |
31 | SR_CONF_RLE | SR_CONF_GET | SR_CONF_SET, | |
4bd80e12 | 32 | }; |
33 | ||
acc885c7 BV |
34 | static const int32_t trigger_matches[] = { |
35 | SR_TRIGGER_ZERO, | |
36 | SR_TRIGGER_ONE, | |
37 | SR_TRIGGER_RISING, | |
38 | SR_TRIGGER_FALLING, | |
39 | }; | |
40 | ||
4bd80e12 | 41 | #define STR_PATTERN_NONE "None" |
42 | #define STR_PATTERN_EXTERNAL "External" | |
43 | #define STR_PATTERN_INTERNAL "Internal" | |
44 | ||
45 | /* Supported methods of test pattern outputs */ | |
46 | enum { | |
47 | /** | |
48 | * Capture pins 31:16 (unbuffered wing) output a test pattern | |
49 | * that can captured on pins 0:15. | |
50 | */ | |
51 | PATTERN_EXTERNAL, | |
52 | ||
53 | /** Route test pattern internally to capture buffer. */ | |
54 | PATTERN_INTERNAL, | |
55 | }; | |
56 | ||
57 | static const char *patterns[] = { | |
58 | STR_PATTERN_NONE, | |
59 | STR_PATTERN_EXTERNAL, | |
60 | STR_PATTERN_INTERNAL, | |
61 | }; | |
62 | ||
63 | /* Channels are numbered 0-31 (on the PCB silkscreen). */ | |
64 | SR_PRIV const char *p_ols_channel_names[NUM_CHANNELS + 1] = { | |
65 | "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", | |
66 | "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", | |
67 | "24", "25", "26", "27", "28", "29", "30", "31", | |
68 | NULL, | |
69 | }; | |
70 | ||
71 | /* Default supported samplerates, can be overridden by device metadata. */ | |
72 | static const uint64_t samplerates[] = { | |
73 | SR_HZ(10), | |
74 | SR_MHZ(200), | |
75 | SR_HZ(1), | |
76 | }; | |
77 | ||
78 | SR_PRIV struct sr_dev_driver p_ols_driver_info; | |
4bd80e12 | 79 | |
4f840ce9 | 80 | static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx) |
4bd80e12 | 81 | { |
82 | return std_init(sr_ctx, di, LOG_PREFIX); | |
83 | } | |
84 | ||
4f840ce9 | 85 | static GSList *scan(struct sr_dev_driver *di, GSList *options) |
4bd80e12 | 86 | { |
87 | struct sr_dev_inst *sdi; | |
88 | struct drv_context *drvc; | |
89 | struct dev_context *devc; | |
90 | GSList *devices; | |
91 | int ret, i; | |
92 | char buf[70]; | |
93 | int bytes_read; | |
94 | ||
95 | (void)options; | |
96 | ||
97 | drvc = di->priv; | |
98 | ||
99 | devices = NULL; | |
100 | ||
101 | /* Allocate memory for our private device context. */ | |
f57d8ffe | 102 | devc = g_malloc0(sizeof(struct dev_context)); |
4bd80e12 | 103 | |
104 | /* Device-specific settings */ | |
b94cff40 | 105 | devc->max_samplebytes = devc->max_samplerate = devc->protocol_version = 0; |
4bd80e12 | 106 | |
107 | /* Acquisition settings */ | |
108 | devc->limit_samples = devc->capture_ratio = 0; | |
109 | devc->trigger_at = -1; | |
110 | devc->channel_mask = 0xffffffff; | |
111 | devc->flag_reg = 0; | |
112 | ||
113 | /* Allocate memory for the incoming ftdi data. */ | |
114 | if (!(devc->ftdi_buf = g_try_malloc0(FTDI_BUF_SIZE))) { | |
115 | sr_err("ftdi_buf malloc failed."); | |
116 | goto err_free_devc; | |
117 | } | |
118 | ||
119 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
120 | if (!(devc->ftdic = ftdi_new())) { | |
121 | sr_err("Failed to initialize libftdi."); | |
122 | goto err_free_ftdi_buf;; | |
123 | } | |
124 | ||
125 | /* Try to open the FTDI device */ | |
126 | if (p_ols_open(devc) != SR_OK) { | |
127 | goto err_free_ftdic; | |
128 | } | |
129 | ||
130 | /* The discovery procedure is like this: first send the Reset | |
131 | * command (0x00) 5 times, since the device could be anywhere | |
132 | * in a 5-byte command. Then send the ID command (0x02). | |
133 | * If the device responds with 4 bytes ("OLS1" or "SLA1"), we | |
134 | * have a match. | |
135 | */ | |
136 | ||
137 | ret = SR_OK; | |
138 | for (i = 0; i < 5; i++) { | |
139 | if ((ret = write_shortcommand(devc, CMD_RESET)) != SR_OK) { | |
140 | break; | |
141 | } | |
142 | } | |
143 | if (ret != SR_OK) { | |
144 | sr_err("Could not reset device. Quitting."); | |
145 | goto err_close_ftdic; | |
146 | } | |
147 | write_shortcommand(devc, CMD_ID); | |
148 | ||
149 | /* Read the response data. */ | |
150 | bytes_read = ftdi_read_data(devc->ftdic, (uint8_t *)buf, 4); | |
151 | if (bytes_read < 0) { | |
152 | sr_err("Failed to read FTDI data (%d): %s.", | |
153 | bytes_read, ftdi_get_error_string(devc->ftdic)); | |
154 | goto err_close_ftdic; | |
155 | } | |
156 | if (bytes_read == 0) { | |
157 | goto err_close_ftdic; | |
158 | } | |
159 | ||
160 | if (strncmp(buf, "1SLO", 4) && strncmp(buf, "1ALS", 4)) | |
161 | goto err_close_ftdic; | |
162 | ||
163 | /* Definitely using the OLS protocol, check if it supports | |
164 | * the metadata command. | |
165 | */ | |
166 | write_shortcommand(devc, CMD_METADATA); | |
167 | ||
168 | /* Read the metadata. */ | |
169 | bytes_read = ftdi_read_data(devc->ftdic, (uint8_t *)buf, 64); | |
170 | if (bytes_read < 0) { | |
171 | sr_err("Failed to read FTDI data (%d): %s.", | |
172 | bytes_read, ftdi_get_error_string(devc->ftdic)); | |
173 | goto err_close_ftdic; | |
174 | } | |
175 | if (bytes_read == 0) { | |
176 | goto err_close_ftdic; | |
177 | } | |
178 | ||
179 | /* Close device. We'll reopen it again when we need it. */ | |
180 | p_ols_close(devc); | |
181 | ||
182 | /* Parse the metadata. */ | |
183 | sdi = p_ols_get_metadata((uint8_t *)buf, bytes_read, devc); | |
4bd80e12 | 184 | |
185 | /* Configure samplerate and divider. */ | |
186 | if (p_ols_set_samplerate(sdi, DEFAULT_SAMPLERATE) != SR_OK) | |
187 | sr_dbg("Failed to set default samplerate (%"PRIu64").", | |
188 | DEFAULT_SAMPLERATE); | |
4bd80e12 | 189 | |
190 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
191 | devices = g_slist_append(devices, sdi); | |
192 | ||
193 | return devices; | |
194 | ||
195 | err_close_ftdic: | |
196 | p_ols_close(devc); | |
197 | err_free_ftdic: | |
198 | ftdi_free(devc->ftdic); /* NOT free() or g_free()! */ | |
199 | err_free_ftdi_buf: | |
200 | g_free(devc->ftdi_buf); | |
201 | err_free_devc: | |
202 | g_free(devc); | |
4bd80e12 | 203 | |
204 | return NULL; | |
205 | } | |
206 | ||
4f840ce9 | 207 | static GSList *dev_list(const struct sr_dev_driver *di) |
4bd80e12 | 208 | { |
209 | return ((struct drv_context *)(di->priv))->instances; | |
210 | } | |
211 | ||
212 | static void clear_helper(void *priv) | |
213 | { | |
214 | struct dev_context *devc; | |
215 | ||
216 | devc = priv; | |
217 | ||
218 | ftdi_free(devc->ftdic); | |
219 | g_free(devc->ftdi_buf); | |
220 | } | |
221 | ||
4f840ce9 | 222 | static int dev_clear(const struct sr_dev_driver *di) |
4bd80e12 | 223 | { |
224 | return std_dev_clear(di, clear_helper); | |
225 | } | |
226 | ||
4f840ce9 | 227 | static int cleanup(const struct sr_dev_driver *di) |
4bd80e12 | 228 | { |
4f840ce9 | 229 | return dev_clear(di); |
4bd80e12 | 230 | } |
231 | ||
232 | ||
584560f1 | 233 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
4bd80e12 | 234 | const struct sr_channel_group *cg) |
235 | { | |
236 | struct dev_context *devc; | |
237 | ||
238 | (void)cg; | |
239 | ||
240 | if (!sdi) | |
241 | return SR_ERR_ARG; | |
242 | ||
243 | devc = sdi->priv; | |
584560f1 | 244 | switch (key) { |
4bd80e12 | 245 | case SR_CONF_SAMPLERATE: |
246 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
247 | break; | |
248 | case SR_CONF_CAPTURE_RATIO: | |
249 | *data = g_variant_new_uint64(devc->capture_ratio); | |
250 | break; | |
251 | case SR_CONF_LIMIT_SAMPLES: | |
252 | *data = g_variant_new_uint64(devc->limit_samples); | |
253 | break; | |
254 | case SR_CONF_PATTERN_MODE: | |
255 | if (devc->flag_reg & FLAG_EXTERNAL_TEST_MODE) | |
256 | *data = g_variant_new_string(STR_PATTERN_EXTERNAL); | |
257 | else if (devc->flag_reg & FLAG_INTERNAL_TEST_MODE) | |
258 | *data = g_variant_new_string(STR_PATTERN_INTERNAL); | |
259 | else | |
260 | *data = g_variant_new_string(STR_PATTERN_NONE); | |
261 | break; | |
262 | case SR_CONF_RLE: | |
263 | *data = g_variant_new_boolean(devc->flag_reg & FLAG_RLE ? TRUE : FALSE); | |
264 | break; | |
265 | case SR_CONF_EXTERNAL_CLOCK: | |
266 | *data = g_variant_new_boolean(devc->flag_reg & FLAG_CLOCK_EXTERNAL ? TRUE : FALSE); | |
267 | break; | |
268 | default: | |
269 | return SR_ERR_NA; | |
270 | } | |
271 | ||
272 | return SR_OK; | |
273 | } | |
274 | ||
584560f1 | 275 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, |
4bd80e12 | 276 | const struct sr_channel_group *cg) |
277 | { | |
278 | struct dev_context *devc; | |
279 | uint16_t flag; | |
280 | uint64_t tmp_u64; | |
281 | int ret; | |
282 | const char *stropt; | |
283 | ||
284 | (void)cg; | |
285 | ||
286 | if (sdi->status != SR_ST_ACTIVE) | |
287 | return SR_ERR_DEV_CLOSED; | |
288 | ||
289 | devc = sdi->priv; | |
290 | ||
584560f1 | 291 | switch (key) { |
4bd80e12 | 292 | case SR_CONF_SAMPLERATE: |
293 | tmp_u64 = g_variant_get_uint64(data); | |
294 | if (tmp_u64 < samplerates[0] || tmp_u64 > samplerates[1]) | |
295 | return SR_ERR_SAMPLERATE; | |
296 | ret = p_ols_set_samplerate(sdi, g_variant_get_uint64(data)); | |
297 | break; | |
298 | case SR_CONF_LIMIT_SAMPLES: | |
299 | tmp_u64 = g_variant_get_uint64(data); | |
300 | if (tmp_u64 < MIN_NUM_SAMPLES) | |
301 | return SR_ERR; | |
302 | devc->limit_samples = tmp_u64; | |
303 | ret = SR_OK; | |
304 | break; | |
305 | case SR_CONF_CAPTURE_RATIO: | |
306 | devc->capture_ratio = g_variant_get_uint64(data); | |
307 | if (devc->capture_ratio < 0 || devc->capture_ratio > 100) { | |
308 | devc->capture_ratio = 0; | |
309 | ret = SR_ERR; | |
310 | } else | |
311 | ret = SR_OK; | |
312 | break; | |
313 | case SR_CONF_EXTERNAL_CLOCK: | |
314 | if (g_variant_get_boolean(data)) { | |
315 | sr_info("Enabling external clock."); | |
316 | devc->flag_reg |= FLAG_CLOCK_EXTERNAL; | |
317 | } else { | |
318 | sr_info("Disabled external clock."); | |
319 | devc->flag_reg &= ~FLAG_CLOCK_EXTERNAL; | |
320 | } | |
321 | ret = SR_OK; | |
322 | break; | |
323 | case SR_CONF_PATTERN_MODE: | |
324 | stropt = g_variant_get_string(data, NULL); | |
325 | ret = SR_OK; | |
326 | flag = 0xffff; | |
327 | if (!strcmp(stropt, STR_PATTERN_NONE)) { | |
328 | sr_info("Disabling test modes."); | |
329 | flag = 0x0000; | |
330 | }else if (!strcmp(stropt, STR_PATTERN_INTERNAL)) { | |
331 | sr_info("Enabling internal test mode."); | |
332 | flag = FLAG_INTERNAL_TEST_MODE; | |
333 | } else if (!strcmp(stropt, STR_PATTERN_EXTERNAL)) { | |
334 | sr_info("Enabling external test mode."); | |
335 | flag = FLAG_EXTERNAL_TEST_MODE; | |
336 | } else { | |
337 | ret = SR_ERR; | |
338 | } | |
339 | if (flag != 0xffff) { | |
340 | devc->flag_reg &= ~(FLAG_INTERNAL_TEST_MODE | FLAG_EXTERNAL_TEST_MODE); | |
341 | devc->flag_reg |= flag; | |
342 | } | |
343 | break; | |
344 | case SR_CONF_SWAP: | |
345 | if (g_variant_get_boolean(data)) { | |
346 | sr_info("Enabling channel swapping."); | |
347 | devc->flag_reg |= FLAG_SWAP_CHANNELS; | |
348 | } else { | |
349 | sr_info("Disabling channel swapping."); | |
350 | devc->flag_reg &= ~FLAG_SWAP_CHANNELS; | |
351 | } | |
352 | ret = SR_OK; | |
353 | break; | |
354 | ||
355 | case SR_CONF_RLE: | |
356 | if (g_variant_get_boolean(data)) { | |
357 | sr_info("Enabling RLE."); | |
358 | devc->flag_reg |= FLAG_RLE; | |
359 | } else { | |
360 | sr_info("Disabling RLE."); | |
361 | devc->flag_reg &= ~FLAG_RLE; | |
362 | } | |
363 | ret = SR_OK; | |
364 | break; | |
365 | default: | |
366 | ret = SR_ERR_NA; | |
367 | } | |
368 | ||
369 | return ret; | |
370 | } | |
371 | ||
584560f1 | 372 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, |
4bd80e12 | 373 | const struct sr_channel_group *cg) |
374 | { | |
375 | struct dev_context *devc; | |
376 | GVariant *gvar, *grange[2]; | |
377 | GVariantBuilder gvb; | |
acc885c7 | 378 | int num_pols_changrp, i; |
4bd80e12 | 379 | |
380 | (void)cg; | |
381 | ||
382 | switch (key) { | |
383 | case SR_CONF_DEVICE_OPTIONS: | |
584560f1 | 384 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, |
f254bc4b | 385 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); |
4bd80e12 | 386 | break; |
387 | case SR_CONF_SAMPLERATE: | |
388 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
389 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates, | |
390 | ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
391 | g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar); | |
392 | *data = g_variant_builder_end(&gvb); | |
393 | break; | |
acc885c7 BV |
394 | case SR_CONF_TRIGGER_MATCH: |
395 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
396 | trigger_matches, ARRAY_SIZE(trigger_matches), | |
397 | sizeof(int32_t)); | |
4bd80e12 | 398 | break; |
399 | case SR_CONF_PATTERN_MODE: | |
400 | *data = g_variant_new_strv(patterns, ARRAY_SIZE(patterns)); | |
401 | break; | |
402 | case SR_CONF_LIMIT_SAMPLES: | |
403 | if (!sdi) | |
404 | return SR_ERR_ARG; | |
405 | devc = sdi->priv; | |
406 | if (devc->flag_reg & FLAG_RLE) | |
407 | return SR_ERR_NA; | |
b94cff40 | 408 | if (devc->max_samplebytes == 0) |
4bd80e12 | 409 | /* Device didn't specify sample memory size in metadata. */ |
410 | return SR_ERR_NA; | |
411 | /* | |
412 | * Channel groups are turned off if no channels in that group are | |
413 | * enabled, making more room for samples for the enabled group. | |
414 | */ | |
acc885c7 BV |
415 | pols_channel_mask(sdi); |
416 | num_pols_changrp = 0; | |
4bd80e12 | 417 | for (i = 0; i < 4; i++) { |
418 | if (devc->channel_mask & (0xff << (i * 8))) | |
acc885c7 | 419 | num_pols_changrp++; |
4bd80e12 | 420 | } |
b94cff40 | 421 | /* 3 channel groups takes as many bytes as 4 channel groups */ |
acc885c7 BV |
422 | if (num_pols_changrp == 3) |
423 | num_pols_changrp = 4; | |
4bd80e12 | 424 | grange[0] = g_variant_new_uint64(MIN_NUM_SAMPLES); |
acc885c7 BV |
425 | if (num_pols_changrp) |
426 | grange[1] = g_variant_new_uint64(devc->max_samplebytes / num_pols_changrp); | |
427 | else | |
428 | grange[1] = g_variant_new_uint64(MIN_NUM_SAMPLES); | |
4bd80e12 | 429 | *data = g_variant_new_tuple(grange, 2); |
430 | break; | |
431 | default: | |
432 | return SR_ERR_NA; | |
433 | } | |
434 | ||
435 | return SR_OK; | |
436 | } | |
437 | ||
438 | static int dev_open(struct sr_dev_inst *sdi) | |
439 | { | |
440 | struct dev_context *devc; | |
4bd80e12 | 441 | |
442 | devc = sdi->priv; | |
443 | ||
444 | if (p_ols_open(devc) != SR_OK) { | |
445 | return SR_ERR; | |
446 | } else { | |
447 | sdi->status = SR_ST_ACTIVE; | |
448 | return SR_OK; | |
449 | } | |
450 | } | |
451 | ||
452 | static int dev_close(struct sr_dev_inst *sdi) | |
453 | { | |
454 | int ret; | |
455 | struct dev_context *devc; | |
456 | ||
457 | ret = SR_OK; | |
458 | devc = sdi->priv; | |
459 | ||
460 | if (sdi->status == SR_ST_ACTIVE) { | |
461 | sr_dbg("Status ACTIVE, closing device."); | |
462 | ret = p_ols_close(devc); | |
463 | } else { | |
464 | sr_spew("Status not ACTIVE, nothing to do."); | |
465 | } | |
466 | ||
467 | sdi->status = SR_ST_INACTIVE; | |
468 | ||
469 | return ret; | |
470 | } | |
471 | ||
472 | ||
473 | static int set_trigger(const struct sr_dev_inst *sdi, int stage) | |
474 | { | |
475 | struct dev_context *devc; | |
476 | uint8_t cmd, arg[4]; | |
477 | ||
478 | devc = sdi->priv; | |
479 | ||
480 | cmd = CMD_SET_TRIGGER_MASK + stage * 4; | |
481 | arg[0] = devc->trigger_mask[stage] & 0xff; | |
482 | arg[1] = (devc->trigger_mask[stage] >> 8) & 0xff; | |
483 | arg[2] = (devc->trigger_mask[stage] >> 16) & 0xff; | |
484 | arg[3] = (devc->trigger_mask[stage] >> 24) & 0xff; | |
485 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
486 | return SR_ERR; | |
487 | ||
488 | cmd = CMD_SET_TRIGGER_VALUE + stage * 4; | |
489 | arg[0] = devc->trigger_value[stage] & 0xff; | |
490 | arg[1] = (devc->trigger_value[stage] >> 8) & 0xff; | |
491 | arg[2] = (devc->trigger_value[stage] >> 16) & 0xff; | |
492 | arg[3] = (devc->trigger_value[stage] >> 24) & 0xff; | |
493 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
494 | return SR_ERR; | |
495 | ||
496 | cmd = CMD_SET_TRIGGER_CONFIG + stage * 4; | |
497 | arg[0] = arg[1] = arg[3] = 0x00; | |
498 | arg[2] = stage; | |
499 | if (stage == devc->num_stages) | |
500 | /* Last stage, fire when this one matches. */ | |
501 | arg[3] |= TRIGGER_START; | |
502 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
503 | return SR_ERR; | |
504 | ||
1e0de846 | 505 | cmd = CMD_SET_TRIGGER_EDGE + stage * 4; |
506 | arg[0] = devc->trigger_edge[stage] & 0xff; | |
507 | arg[1] = (devc->trigger_edge[stage] >> 8) & 0xff; | |
508 | arg[2] = (devc->trigger_edge[stage] >> 16) & 0xff; | |
509 | arg[3] = (devc->trigger_edge[stage] >> 24) & 0xff; | |
510 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
511 | return SR_ERR; | |
512 | ||
4bd80e12 | 513 | return SR_OK; |
514 | } | |
515 | ||
84cbaf77 BV |
516 | static int disable_trigger(const struct sr_dev_inst *sdi, int stage) |
517 | { | |
518 | struct dev_context *devc; | |
519 | uint8_t cmd, arg[4]; | |
520 | ||
521 | devc = sdi->priv; | |
522 | ||
523 | cmd = CMD_SET_TRIGGER_MASK + stage * 4; | |
524 | arg[0] = arg[1] = arg[2] = arg[3] = 0x00; | |
525 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
526 | return SR_ERR; | |
527 | ||
528 | cmd = CMD_SET_TRIGGER_VALUE + stage * 4; | |
529 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
530 | return SR_ERR; | |
531 | ||
532 | cmd = CMD_SET_TRIGGER_CONFIG + stage * 4; | |
533 | arg[2] = 0x03; | |
534 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
535 | return SR_ERR; | |
536 | ||
537 | cmd = CMD_SET_TRIGGER_EDGE + stage * 4; | |
538 | arg[2] = 0x00; | |
539 | if (write_longcommand(devc, cmd, arg) != SR_OK) | |
540 | return SR_ERR; | |
541 | ||
542 | return SR_OK; | |
543 | } | |
544 | ||
4bd80e12 | 545 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, |
546 | void *cb_data) | |
547 | { | |
548 | struct dev_context *devc; | |
549 | uint32_t samplecount, readcount, delaycount; | |
acc885c7 | 550 | uint8_t pols_changrp_mask, arg[4]; |
b94cff40 | 551 | uint16_t flag_tmp; |
acc885c7 | 552 | int num_pols_changrp, samplespercount; |
4bd80e12 | 553 | int ret, i; |
554 | ||
555 | if (sdi->status != SR_ST_ACTIVE) | |
556 | return SR_ERR_DEV_CLOSED; | |
557 | ||
558 | devc = sdi->priv; | |
559 | ||
acc885c7 | 560 | pols_channel_mask(sdi); |
4bd80e12 | 561 | |
562 | /* | |
563 | * Enable/disable channel groups in the flag register according to the | |
acc885c7 BV |
564 | * channel mask. Calculate this here, because num_pols_changrp is |
565 | * needed to limit readcount. | |
4bd80e12 | 566 | */ |
acc885c7 BV |
567 | pols_changrp_mask = 0; |
568 | num_pols_changrp = 0; | |
4bd80e12 | 569 | for (i = 0; i < 4; i++) { |
570 | if (devc->channel_mask & (0xff << (i * 8))) { | |
acc885c7 BV |
571 | pols_changrp_mask |= (1 << i); |
572 | num_pols_changrp++; | |
4bd80e12 | 573 | } |
574 | } | |
b94cff40 | 575 | /* 3 channel groups takes as many bytes as 4 channel groups */ |
acc885c7 BV |
576 | if (num_pols_changrp == 3) |
577 | num_pols_changrp = 4; | |
b94cff40 | 578 | /* maximum number of samples (or RLE counts) the buffer memory can hold */ |
acc885c7 | 579 | devc->max_samples = devc->max_samplebytes / num_pols_changrp; |
4bd80e12 | 580 | |
581 | /* | |
582 | * Limit readcount to prevent reading past the end of the hardware | |
583 | * buffer. | |
584 | */ | |
585 | sr_dbg("max_samples = %d", devc->max_samples); | |
586 | sr_dbg("limit_samples = %d", devc->limit_samples); | |
b94cff40 | 587 | samplecount = MIN(devc->max_samples, devc->limit_samples); |
4bd80e12 | 588 | sr_dbg("Samplecount = %d", samplecount); |
589 | ||
b94cff40 | 590 | /* In demux mode the OLS is processing two samples per clock */ |
591 | if (devc->flag_reg & FLAG_DEMUX) { | |
592 | samplespercount = 8; | |
593 | } | |
594 | else { | |
595 | samplespercount = 4; | |
596 | } | |
597 | ||
598 | readcount = samplecount / samplespercount; | |
599 | ||
4bd80e12 | 600 | /* Rather read too many samples than too few. */ |
b94cff40 | 601 | if (samplecount % samplespercount != 0) |
4bd80e12 | 602 | readcount++; |
603 | ||
604 | /* Basic triggers. */ | |
acc885c7 BV |
605 | if (pols_convert_trigger(sdi) != SR_OK) { |
606 | sr_err("Failed to configure channels."); | |
607 | return SR_ERR; | |
608 | } | |
84cbaf77 | 609 | |
acc885c7 | 610 | if (devc->num_stages > 0) { |
4bd80e12 | 611 | delaycount = readcount * (1 - devc->capture_ratio / 100.0); |
b94cff40 | 612 | devc->trigger_at = (readcount - delaycount) * samplespercount - devc->num_stages; |
84cbaf77 BV |
613 | for (i = 0; i < NUM_TRIGGER_STAGES; i++) { |
614 | if (i <= devc->num_stages) { | |
615 | sr_dbg("Setting p-ols stage %d trigger.", i); | |
616 | if ((ret = set_trigger(sdi, i)) != SR_OK) | |
617 | return ret; | |
618 | } | |
619 | else { | |
620 | sr_dbg("Disabling p-ols stage %d trigger.", i); | |
621 | if ((ret = disable_trigger(sdi, i)) != SR_OK) | |
622 | return ret; | |
623 | } | |
4bd80e12 | 624 | } |
625 | } else { | |
626 | /* No triggers configured, force trigger on first stage. */ | |
627 | sr_dbg("Forcing trigger at stage 0."); | |
628 | if ((ret = set_trigger(sdi, 0)) != SR_OK) | |
629 | return ret; | |
630 | delaycount = readcount; | |
631 | } | |
632 | ||
633 | /* Samplerate. */ | |
634 | sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)", | |
635 | devc->cur_samplerate, devc->cur_samplerate_divider); | |
636 | arg[0] = devc->cur_samplerate_divider & 0xff; | |
637 | arg[1] = (devc->cur_samplerate_divider & 0xff00) >> 8; | |
638 | arg[2] = (devc->cur_samplerate_divider & 0xff0000) >> 16; | |
639 | arg[3] = 0x00; | |
640 | if (write_longcommand(devc, CMD_SET_DIVIDER, arg) != SR_OK) | |
641 | return SR_ERR; | |
acc885c7 | 642 | |
4bd80e12 | 643 | /* Send extended sample limit and pre/post-trigger capture ratio. */ |
644 | arg[0] = ((readcount - 1) & 0xff); | |
645 | arg[1] = ((readcount - 1) & 0xff00) >> 8; | |
646 | arg[2] = ((readcount - 1) & 0xff0000) >> 16; | |
647 | arg[3] = ((readcount - 1) & 0xff000000) >> 24; | |
1e0de846 | 648 | if (write_longcommand(devc, CMD_CAPTURE_DELAY, arg) != SR_OK) |
4bd80e12 | 649 | return SR_ERR; |
650 | arg[0] = ((delaycount - 1) & 0xff); | |
651 | arg[1] = ((delaycount - 1) & 0xff00) >> 8; | |
652 | arg[2] = ((delaycount - 1) & 0xff0000) >> 16; | |
653 | arg[3] = ((delaycount - 1) & 0xff000000) >> 24; | |
1e0de846 | 654 | if (write_longcommand(devc, CMD_CAPTURE_COUNT, arg) != SR_OK) |
4bd80e12 | 655 | return SR_ERR; |
acc885c7 | 656 | |
4bd80e12 | 657 | /* Flag register. */ |
658 | sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s", | |
659 | devc->flag_reg & FLAG_INTERNAL_TEST_MODE ? "on": "off", | |
660 | devc->flag_reg & FLAG_EXTERNAL_TEST_MODE ? "on": "off", | |
661 | devc->flag_reg & FLAG_RLE ? "on" : "off", | |
662 | devc->flag_reg & FLAG_FILTER ? "on": "off", | |
663 | devc->flag_reg & FLAG_DEMUX ? "on" : "off"); | |
664 | ||
b94cff40 | 665 | /* |
666 | * Enable/disable OLS channel groups in the flag register according | |
667 | * to the channel mask. 1 means "disable channel". | |
668 | */ | |
669 | devc->flag_reg &= ~0x3c; | |
acc885c7 | 670 | devc->flag_reg |= ~(pols_changrp_mask << 2) & 0x3c; |
b94cff40 | 671 | sr_dbg("flag_reg = %x", devc->flag_reg); |
672 | ||
673 | /* | |
674 | * In demux mode the OLS is processing two 8-bit or 16-bit samples | |
675 | * in parallel and for this to work the lower two bits of the four | |
676 | * "channel_disable" bits must be replicated to the upper two bits. | |
677 | */ | |
678 | flag_tmp = devc->flag_reg; | |
679 | if (devc->flag_reg & FLAG_DEMUX) { | |
680 | flag_tmp &= ~0x30; | |
acc885c7 | 681 | flag_tmp |= ~(pols_changrp_mask << 4) & 0x30; |
b94cff40 | 682 | } |
683 | arg[0] = flag_tmp & 0xff; | |
684 | arg[1] = flag_tmp >> 8; | |
4bd80e12 | 685 | arg[2] = arg[3] = 0x00; |
686 | if (write_longcommand(devc, CMD_SET_FLAGS, arg) != SR_OK) | |
687 | return SR_ERR; | |
688 | ||
689 | /* Start acquisition on the device. */ | |
690 | if (write_shortcommand(devc, CMD_RUN) != SR_OK) | |
691 | return SR_ERR; | |
692 | ||
693 | /* Reset all operational states. */ | |
694 | devc->rle_count = devc->num_transfers = 0; | |
695 | devc->num_samples = devc->num_bytes = 0; | |
696 | devc->cnt_bytes = devc->cnt_samples = devc->cnt_samples_rle = 0; | |
697 | memset(devc->sample, 0, 4); | |
698 | ||
699 | /* Send header packet to the session bus. */ | |
700 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
701 | ||
702 | /* Hook up a dummy handler to receive data from the device. */ | |
acc885c7 BV |
703 | sr_session_source_add(sdi->session, 0, G_IO_IN, 10, p_ols_receive_data, |
704 | cb_data); | |
4bd80e12 | 705 | |
706 | return SR_OK; | |
707 | } | |
708 | ||
709 | ||
710 | ||
711 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
712 | { | |
713 | struct dev_context *devc; | |
714 | struct sr_datafeed_packet packet; | |
715 | ||
716 | devc = sdi->priv; | |
717 | ||
718 | sr_dbg("Stopping acquisition."); | |
719 | write_shortcommand(devc, CMD_RESET); | |
720 | write_shortcommand(devc, CMD_RESET); | |
721 | write_shortcommand(devc, CMD_RESET); | |
722 | write_shortcommand(devc, CMD_RESET); | |
723 | write_shortcommand(devc, CMD_RESET); | |
724 | ||
acc885c7 | 725 | sr_session_source_remove(sdi->session, 0); |
4bd80e12 | 726 | |
727 | /* Send end packet to the session bus. */ | |
728 | sr_dbg("Sending SR_DF_END."); | |
729 | packet.type = SR_DF_END; | |
730 | sr_session_send(cb_data, &packet); | |
731 | ||
732 | return SR_OK; | |
733 | } | |
734 | ||
735 | SR_PRIV struct sr_dev_driver p_ols_driver_info = { | |
acc885c7 | 736 | .name = "p-ols", |
4bd80e12 | 737 | .longname = "Pipistrello OLS", |
738 | .api_version = 1, | |
739 | .init = init, | |
740 | .cleanup = cleanup, | |
741 | .scan = scan, | |
742 | .dev_list = dev_list, | |
743 | .dev_clear = dev_clear, | |
744 | .config_get = config_get, | |
745 | .config_set = config_set, | |
746 | .config_list = config_list, | |
747 | .dev_open = dev_open, | |
748 | .dev_close = dev_close, | |
749 | .dev_acquisition_start = dev_acquisition_start, | |
750 | .dev_acquisition_stop = dev_acquisition_stop, | |
751 | .priv = NULL, | |
752 | }; |