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Commit | Line | Data |
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0aba65da | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
0aba65da | 3 | * |
13d8e03c | 4 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
0aba65da UH |
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 | ||
6ec6c43b | 20 | #include <config.h> |
515ab088 | 21 | #include "protocol.h" |
0aba65da | 22 | |
f8fd8420 | 23 | struct ols_basic_trigger_desc { |
24 | uint32_t trigger_mask[NUM_BASIC_TRIGGER_STAGES]; | |
25 | uint32_t trigger_value[NUM_BASIC_TRIGGER_STAGES]; | |
26 | int num_stages; | |
27 | }; | |
28 | ||
0aba65da | 29 | SR_PRIV int send_shortcommand(struct sr_serial_dev_inst *serial, |
55eca716 | 30 | uint8_t command) |
0aba65da UH |
31 | { |
32 | char buf[1]; | |
33 | ||
34 | sr_dbg("Sending cmd 0x%.2x.", command); | |
35 | buf[0] = command; | |
f4d3a4fb | 36 | if (serial_write_blocking(serial, buf, 1, serial_timeout(serial, 1)) != 1) |
0aba65da UH |
37 | return SR_ERR; |
38 | ||
dcdc2848 | 39 | if (serial_drain(serial) != SR_OK) |
bce75f94 UJ |
40 | return SR_ERR; |
41 | ||
0aba65da UH |
42 | return SR_OK; |
43 | } | |
44 | ||
55eca716 | 45 | SR_PRIV int send_longcommand(struct sr_serial_dev_inst *serial, uint8_t command, |
46 | uint8_t *data) | |
0aba65da UH |
47 | { |
48 | char buf[5]; | |
49 | ||
55eca716 | 50 | sr_dbg("Sending cmd 0x%.2x data 0x%.2x%.2x%.2x%.2x.", command, data[0], |
51 | data[1], data[2], data[3]); | |
0aba65da | 52 | buf[0] = command; |
016e72f3 BV |
53 | buf[1] = data[0]; |
54 | buf[2] = data[1]; | |
55 | buf[3] = data[2]; | |
56 | buf[4] = data[3]; | |
f4d3a4fb | 57 | if (serial_write_blocking(serial, buf, 5, serial_timeout(serial, 1)) != 5) |
0aba65da UH |
58 | return SR_ERR; |
59 | ||
dcdc2848 | 60 | if (serial_drain(serial) != SR_OK) |
bce75f94 UJ |
61 | return SR_ERR; |
62 | ||
0aba65da UH |
63 | return SR_OK; |
64 | } | |
65 | ||
55eca716 | 66 | static int ols_send_longdata(struct sr_serial_dev_inst *serial, uint8_t command, |
67 | uint32_t value) | |
3cc9e215 | 68 | { |
69 | uint8_t data[4]; | |
70 | WL32(data, value); | |
71 | return send_longcommand(serial, command, data); | |
72 | } | |
73 | ||
244995a2 GGM |
74 | SR_PRIV int ols_send_reset(struct sr_serial_dev_inst *serial) |
75 | { | |
76 | unsigned int i; | |
77 | ||
78 | for (i = 0; i < 5; i++) { | |
79 | if (send_shortcommand(serial, CMD_RESET) != SR_OK) | |
80 | return SR_ERR; | |
81 | } | |
82 | ||
83 | return SR_OK; | |
84 | } | |
85 | ||
91fd0f72 | 86 | /* Configures the channel mask based on which channels are enabled. */ |
f8fd8420 | 87 | SR_PRIV uint32_t ols_channel_mask(const struct sr_dev_inst *sdi) |
0aba65da | 88 | { |
f8fd8420 | 89 | uint32_t channel_mask = 0; |
90 | for (const GSList *l = sdi->channels; l; l = l->next) { | |
91 | struct sr_channel *channel = l->data; | |
91fd0f72 | 92 | if (channel->enabled) |
f8fd8420 | 93 | channel_mask |= 1 << channel->index; |
91fd0f72 | 94 | } |
f8fd8420 | 95 | |
96 | return channel_mask; | |
91fd0f72 BV |
97 | } |
98 | ||
55eca716 | 99 | static int convert_trigger(const struct sr_dev_inst *sdi, |
100 | struct ols_basic_trigger_desc *ols_trigger) | |
91fd0f72 | 101 | { |
91fd0f72 BV |
102 | struct sr_trigger *trigger; |
103 | struct sr_trigger_stage *stage; | |
104 | struct sr_trigger_match *match; | |
105 | const GSList *l, *m; | |
106 | int i; | |
107 | ||
f8fd8420 | 108 | ols_trigger->num_stages = 0; |
109 | for (i = 0; i < NUM_BASIC_TRIGGER_STAGES; i++) { | |
110 | ols_trigger->trigger_mask[i] = 0; | |
111 | ols_trigger->trigger_value[i] = 0; | |
0aba65da UH |
112 | } |
113 | ||
0812c40e | 114 | if (!(trigger = sr_session_trigger_get(sdi->session))) |
91fd0f72 | 115 | return SR_OK; |
0aba65da | 116 | |
f8fd8420 | 117 | ols_trigger->num_stages = g_slist_length(trigger->stages); |
118 | if (ols_trigger->num_stages > NUM_BASIC_TRIGGER_STAGES) { | |
91fd0f72 | 119 | sr_err("This device only supports %d trigger stages.", |
55eca716 | 120 | NUM_BASIC_TRIGGER_STAGES); |
91fd0f72 BV |
121 | return SR_ERR; |
122 | } | |
b1de0407 | 123 | |
91fd0f72 BV |
124 | for (l = trigger->stages; l; l = l->next) { |
125 | stage = l->data; | |
126 | for (m = stage->matches; m; m = m->next) { | |
127 | match = m->data; | |
128 | if (!match->channel->enabled) | |
129 | /* Ignore disabled channels with a trigger. */ | |
130 | continue; | |
55eca716 | 131 | ols_trigger->trigger_mask[stage->stage] |= |
132 | 1 << match->channel->index; | |
91fd0f72 | 133 | if (match->match == SR_TRIGGER_ONE) |
55eca716 | 134 | ols_trigger->trigger_value[stage->stage] |= |
135 | 1 << match->channel->index; | |
0aba65da | 136 | } |
0aba65da UH |
137 | } |
138 | ||
139 | return SR_OK; | |
140 | } | |
141 | ||
0aba65da UH |
142 | SR_PRIV struct dev_context *ols_dev_new(void) |
143 | { | |
144 | struct dev_context *devc; | |
145 | ||
f57d8ffe | 146 | devc = g_malloc0(sizeof(struct dev_context)); |
a2b1a53b | 147 | devc->trigger_at_smpl = OLS_NO_TRIGGER; |
bf256783 | 148 | |
0aba65da UH |
149 | return devc; |
150 | } | |
151 | ||
4a34a74d WS |
152 | static void ols_channel_new(struct sr_dev_inst *sdi, int num_chan) |
153 | { | |
ea642977 | 154 | struct dev_context *devc = sdi->priv; |
4a34a74d WS |
155 | int i; |
156 | ||
157 | for (i = 0; i < num_chan; i++) | |
158 | sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, | |
55eca716 | 159 | ols_channel_names[i]); |
ea642977 WS |
160 | |
161 | devc->max_channels = num_chan; | |
4a34a74d WS |
162 | } |
163 | ||
aad6b9de | 164 | static void ols_metadata_quirks(struct sr_dev_inst *sdi) |
ad4174c1 GS |
165 | { |
166 | struct dev_context *devc; | |
167 | gboolean is_shrimp; | |
168 | ||
169 | if (!sdi) | |
170 | return; | |
171 | devc = sdi->priv; | |
172 | if (!devc) | |
173 | return; | |
174 | ||
175 | is_shrimp = sdi->model && strcmp(sdi->model, "Shrimp1.0") == 0; | |
176 | if (is_shrimp) { | |
177 | if (!devc->max_channels) | |
178 | ols_channel_new(sdi, 4); | |
179 | if (!devc->max_samples) | |
180 | devc->max_samples = 256 * 1024; | |
181 | if (!devc->max_samplerate) | |
182 | devc->max_samplerate = SR_MHZ(20); | |
183 | } | |
6f9234e6 | 184 | |
185 | if (sdi->version && strstr(sdi->version, "FPGA version 3.07")) | |
186 | devc->device_flags |= DEVICE_FLAG_IS_DEMON_CORE; | |
ad4174c1 GS |
187 | } |
188 | ||
0aba65da UH |
189 | SR_PRIV struct sr_dev_inst *get_metadata(struct sr_serial_dev_inst *serial) |
190 | { | |
191 | struct sr_dev_inst *sdi; | |
192 | struct dev_context *devc; | |
4a34a74d | 193 | uint32_t tmp_int; |
6f9234e6 | 194 | uint8_t key, type; |
f4d3a4fb | 195 | int delay_ms; |
0aba65da UH |
196 | GString *tmp_str, *devname, *version; |
197 | guchar tmp_c; | |
198 | ||
aac29cc1 | 199 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be | 200 | sdi->status = SR_ST_INACTIVE; |
0aba65da UH |
201 | devc = ols_dev_new(); |
202 | sdi->priv = devc; | |
203 | ||
204 | devname = g_string_new(""); | |
205 | version = g_string_new(""); | |
206 | ||
207 | key = 0xff; | |
208 | while (key) { | |
f4d3a4fb BV |
209 | delay_ms = serial_timeout(serial, 1); |
210 | if (serial_read_blocking(serial, &key, 1, delay_ms) != 1) | |
0aba65da | 211 | break; |
6f9234e6 | 212 | if (key == METADATA_TOKEN_END) { |
625763e2 BV |
213 | sr_dbg("Got metadata key 0x00, metadata ends."); |
214 | break; | |
215 | } | |
0aba65da | 216 | type = key >> 5; |
0aba65da UH |
217 | switch (type) { |
218 | case 0: | |
219 | /* NULL-terminated string */ | |
220 | tmp_str = g_string_new(""); | |
f4d3a4fb | 221 | delay_ms = serial_timeout(serial, 1); |
55eca716 | 222 | while (serial_read_blocking(serial, &tmp_c, 1, |
223 | delay_ms) == 1 && | |
224 | tmp_c != '\0') | |
0aba65da | 225 | g_string_append_c(tmp_str, tmp_c); |
55eca716 | 226 | sr_dbg("Got metadata token 0x%.2x value '%s'.", key, |
227 | tmp_str->str); | |
6f9234e6 | 228 | switch (key) { |
229 | case METADATA_TOKEN_DEVICE_NAME: | |
0aba65da | 230 | /* Device name */ |
55eca716 | 231 | devname = |
232 | g_string_append(devname, tmp_str->str); | |
0aba65da | 233 | break; |
6f9234e6 | 234 | case METADATA_TOKEN_FPGA_VERSION: |
0aba65da UH |
235 | /* FPGA firmware version */ |
236 | if (version->len) | |
237 | g_string_append(version, ", "); | |
238 | g_string_append(version, "FPGA version "); | |
239 | g_string_append(version, tmp_str->str); | |
240 | break; | |
6f9234e6 | 241 | case METADATA_TOKEN_ANCILLARY_VERSION: |
0aba65da UH |
242 | /* Ancillary version */ |
243 | if (version->len) | |
244 | g_string_append(version, ", "); | |
245 | g_string_append(version, "Ancillary version "); | |
246 | g_string_append(version, tmp_str->str); | |
247 | break; | |
248 | default: | |
55eca716 | 249 | sr_info("ols: unknown token 0x%.2x: '%s'", key, |
250 | tmp_str->str); | |
0aba65da UH |
251 | break; |
252 | } | |
253 | g_string_free(tmp_str, TRUE); | |
254 | break; | |
255 | case 1: | |
256 | /* 32-bit unsigned integer */ | |
f4d3a4fb | 257 | delay_ms = serial_timeout(serial, 4); |
55eca716 | 258 | if (serial_read_blocking(serial, &tmp_int, 4, |
259 | delay_ms) != 4) | |
0aba65da | 260 | break; |
016e72f3 | 261 | tmp_int = RB32(&tmp_int); |
55eca716 | 262 | sr_dbg("Got metadata token 0x%.2x value 0x%.8x.", key, |
263 | tmp_int); | |
6f9234e6 | 264 | switch (key) { |
265 | case METADATA_TOKEN_NUM_PROBES_LONG: | |
ba7dd8bb | 266 | /* Number of usable channels */ |
4a34a74d | 267 | ols_channel_new(sdi, tmp_int); |
0aba65da | 268 | break; |
6f9234e6 | 269 | case METADATA_TOKEN_SAMPLE_MEMORY_BYTES: |
0aba65da UH |
270 | /* Amount of sample memory available (bytes) */ |
271 | devc->max_samples = tmp_int; | |
272 | break; | |
6f9234e6 | 273 | case METADATA_TOKEN_DYNAMIC_MEMORY_BYTES: |
0aba65da UH |
274 | /* Amount of dynamic memory available (bytes) */ |
275 | /* what is this for? */ | |
276 | break; | |
6f9234e6 | 277 | case METADATA_TOKEN_MAX_SAMPLE_RATE_HZ: |
f3f19d11 | 278 | /* Maximum sample rate (Hz) */ |
0aba65da UH |
279 | devc->max_samplerate = tmp_int; |
280 | break; | |
6f9234e6 | 281 | case METADATA_TOKEN_PROTOCOL_VERSION_LONG: |
0aba65da UH |
282 | /* protocol version */ |
283 | devc->protocol_version = tmp_int; | |
284 | break; | |
285 | default: | |
55eca716 | 286 | sr_info("Unknown token 0x%.2x: 0x%.8x.", key, |
287 | tmp_int); | |
0aba65da UH |
288 | break; |
289 | } | |
290 | break; | |
291 | case 2: | |
292 | /* 8-bit unsigned integer */ | |
f4d3a4fb BV |
293 | delay_ms = serial_timeout(serial, 1); |
294 | if (serial_read_blocking(serial, &tmp_c, 1, delay_ms) != 1) | |
0aba65da | 295 | break; |
55eca716 | 296 | sr_dbg("Got metadata token 0x%.2x value 0x%.2x.", key, |
297 | tmp_c); | |
6f9234e6 | 298 | switch (key) { |
299 | case METADATA_TOKEN_NUM_PROBES_SHORT: | |
ba7dd8bb | 300 | /* Number of usable channels */ |
4a34a74d | 301 | ols_channel_new(sdi, tmp_c); |
0aba65da | 302 | break; |
6f9234e6 | 303 | case METADATA_TOKEN_PROTOCOL_VERSION_SHORT: |
0aba65da UH |
304 | /* protocol version */ |
305 | devc->protocol_version = tmp_c; | |
306 | break; | |
307 | default: | |
55eca716 | 308 | sr_info("Unknown token 0x%.2x: 0x%.2x.", key, |
309 | tmp_c); | |
0aba65da UH |
310 | break; |
311 | } | |
312 | break; | |
313 | default: | |
314 | /* unknown type */ | |
315 | break; | |
316 | } | |
317 | } | |
318 | ||
319 | sdi->model = devname->str; | |
320 | sdi->version = version->str; | |
321 | g_string_free(devname, FALSE); | |
322 | g_string_free(version, FALSE); | |
323 | ||
ad4174c1 | 324 | /* Optionally amend received metadata, model specific quirks. */ |
aad6b9de | 325 | ols_metadata_quirks(sdi); |
ad4174c1 | 326 | |
0aba65da UH |
327 | return sdi; |
328 | } | |
329 | ||
330 | SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi, | |
55eca716 | 331 | const uint64_t samplerate) |
0aba65da UH |
332 | { |
333 | struct dev_context *devc; | |
334 | ||
335 | devc = sdi->priv; | |
e46aa4f6 | 336 | if (devc->max_samplerate && samplerate > devc->max_samplerate) |
0aba65da UH |
337 | return SR_ERR_SAMPLERATE; |
338 | ||
339 | if (samplerate > CLOCK_RATE) { | |
6ebe0039 | 340 | sr_info("Enabling demux mode."); |
a80bed76 | 341 | devc->capture_flags |= CAPTURE_FLAG_DEMUX; |
342 | devc->capture_flags &= ~CAPTURE_FLAG_NOISE_FILTER; | |
55eca716 | 343 | devc->cur_samplerate_divider = |
344 | (CLOCK_RATE * 2 / samplerate) - 1; | |
0aba65da | 345 | } else { |
6ebe0039 | 346 | sr_info("Disabling demux mode."); |
a80bed76 | 347 | devc->capture_flags &= ~CAPTURE_FLAG_DEMUX; |
348 | devc->capture_flags |= CAPTURE_FLAG_NOISE_FILTER; | |
0aba65da UH |
349 | devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1; |
350 | } | |
351 | ||
352 | /* Calculate actual samplerate used and complain if it is different | |
353 | * from the requested. | |
354 | */ | |
355 | devc->cur_samplerate = CLOCK_RATE / (devc->cur_samplerate_divider + 1); | |
a80bed76 | 356 | if (devc->capture_flags & CAPTURE_FLAG_DEMUX) |
0aba65da UH |
357 | devc->cur_samplerate *= 2; |
358 | if (devc->cur_samplerate != samplerate) | |
55eca716 | 359 | sr_info("Can't match samplerate %" PRIu64 ", using %" PRIu64 |
360 | ".", | |
361 | samplerate, devc->cur_samplerate); | |
0aba65da UH |
362 | |
363 | return SR_OK; | |
364 | } | |
365 | ||
366 | SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi) | |
367 | { | |
459a0f26 | 368 | struct sr_serial_dev_inst *serial; |
0aba65da | 369 | |
459a0f26 | 370 | serial = sdi->conn; |
7dd1dd9f | 371 | ols_send_reset(serial); |
6d8182b6 | 372 | |
102f1239 | 373 | serial_source_remove(sdi->session, serial); |
0aba65da | 374 | |
bee2b016 | 375 | std_session_send_df_end(sdi); |
0aba65da UH |
376 | } |
377 | ||
378 | SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) | |
379 | { | |
459a0f26 | 380 | struct dev_context *devc; |
625763e2 | 381 | struct sr_dev_inst *sdi; |
459a0f26 | 382 | struct sr_serial_dev_inst *serial; |
0aba65da UH |
383 | struct sr_datafeed_packet packet; |
384 | struct sr_datafeed_logic logic; | |
fe9ac252 | 385 | uint32_t sample; |
f8fd8420 | 386 | int num_changroups, offset, j; |
b1de0407 | 387 | unsigned int i; |
0aba65da | 388 | unsigned char byte; |
625763e2 BV |
389 | |
390 | (void)fd; | |
391 | ||
392 | sdi = cb_data; | |
393 | serial = sdi->conn; | |
394 | devc = sdi->priv; | |
0aba65da | 395 | |
8105e829 DE |
396 | if (devc->num_transfers == 0 && revents == 0) { |
397 | /* Ignore timeouts as long as we haven't received anything */ | |
398 | return TRUE; | |
399 | } | |
400 | ||
0aba65da | 401 | if (devc->num_transfers++ == 0) { |
0aba65da UH |
402 | devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4); |
403 | if (!devc->raw_sample_buf) { | |
404 | sr_err("Sample buffer malloc failed."); | |
405 | return FALSE; | |
406 | } | |
407 | /* fill with 1010... for debugging */ | |
408 | memset(devc->raw_sample_buf, 0x82, devc->limit_samples * 4); | |
409 | } | |
410 | ||
f8fd8420 | 411 | num_changroups = 0; |
be15c51e | 412 | for (i = 0x20; i > 0x02; i >>= 1) { |
a80bed76 | 413 | if ((devc->capture_flags & i) == 0) { |
f8fd8420 | 414 | num_changroups++; |
f51acd69 | 415 | } |
0aba65da UH |
416 | } |
417 | ||
faf72024 | 418 | if (revents == G_IO_IN && devc->num_samples < devc->limit_samples) { |
9f5d4c3c | 419 | if (serial_read_nonblocking(serial, &byte, 1) != 1) |
0aba65da | 420 | return FALSE; |
625763e2 | 421 | devc->cnt_bytes++; |
0aba65da UH |
422 | |
423 | /* Ignore it if we've read enough. */ | |
424 | if (devc->num_samples >= devc->limit_samples) | |
425 | return TRUE; | |
426 | ||
427 | devc->sample[devc->num_bytes++] = byte; | |
6d16fdfb | 428 | sr_spew("Received byte 0x%.2x.", byte); |
f8fd8420 | 429 | if (devc->num_bytes == num_changroups) { |
625763e2 BV |
430 | devc->cnt_samples++; |
431 | devc->cnt_samples_rle++; | |
432 | /* | |
433 | * Got a full sample. Convert from the OLS's little-endian | |
434 | * sample to the local format. | |
435 | */ | |
55eca716 | 436 | sample = devc->sample[0] | (devc->sample[1] << 8) | |
437 | (devc->sample[2] << 16) | | |
438 | (devc->sample[3] << 24); | |
439 | sr_dbg("Received sample 0x%.*x.", devc->num_bytes * 2, | |
440 | sample); | |
a80bed76 | 441 | if (devc->capture_flags & CAPTURE_FLAG_RLE) { |
0aba65da | 442 | /* |
00d04d3b BV |
443 | * In RLE mode the high bit of the sample is the |
444 | * "count" flag, meaning this sample is the number | |
445 | * of times the previous sample occurred. | |
0aba65da UH |
446 | */ |
447 | if (devc->sample[devc->num_bytes - 1] & 0x80) { | |
00d04d3b | 448 | /* Clear the high bit. */ |
55eca716 | 449 | sample &= ~(0x80 << (devc->num_bytes - |
450 | 1) * 8); | |
fe9ac252 | 451 | devc->rle_count = sample; |
55eca716 | 452 | devc->cnt_samples_rle += |
453 | devc->rle_count; | |
454 | sr_dbg("RLE count: %u.", | |
455 | devc->rle_count); | |
0aba65da UH |
456 | devc->num_bytes = 0; |
457 | return TRUE; | |
458 | } | |
459 | } | |
460 | devc->num_samples += devc->rle_count + 1; | |
461 | if (devc->num_samples > devc->limit_samples) { | |
462 | /* Save us from overrunning the buffer. */ | |
55eca716 | 463 | devc->rle_count -= |
464 | devc->num_samples - devc->limit_samples; | |
0aba65da UH |
465 | devc->num_samples = devc->limit_samples; |
466 | } | |
467 | ||
f8fd8420 | 468 | if (num_changroups < 4) { |
0aba65da UH |
469 | /* |
470 | * Some channel groups may have been turned | |
471 | * off, to speed up transfer between the | |
472 | * hardware and the PC. Expand that here before | |
473 | * submitting it over the session bus -- | |
474 | * whatever is listening on the bus will be | |
475 | * expecting a full 32-bit sample, based on | |
ba7dd8bb | 476 | * the number of channels. |
0aba65da UH |
477 | */ |
478 | j = 0; | |
cfe55d09 | 479 | uint8_t tmp_sample[4] = { 0, 0, 0, 0 }; |
0aba65da | 480 | for (i = 0; i < 4; i++) { |
55eca716 | 481 | if (((devc->capture_flags >> 2) & |
482 | (1 << i)) == 0) { | |
0aba65da UH |
483 | /* |
484 | * This channel group was | |
485 | * enabled, copy from received | |
486 | * sample. | |
487 | */ | |
cfe55d09 | 488 | tmp_sample[i] = |
55eca716 | 489 | devc->sample[j++]; |
0aba65da UH |
490 | } |
491 | } | |
cfe55d09 | 492 | memcpy(devc->sample, tmp_sample, 4); |
29f15d52 | 493 | sr_spew("Expanded sample: 0x%.2hhx%.2hhx%.2hhx%.2hhx ", |
55eca716 | 494 | devc->sample[3], devc->sample[2], |
495 | devc->sample[1], devc->sample[0]); | |
0aba65da UH |
496 | } |
497 | ||
625763e2 BV |
498 | /* |
499 | * the OLS sends its sample buffer backwards. | |
0aba65da UH |
500 | * store it in reverse order here, so we can dump |
501 | * this on the session bus later. | |
502 | */ | |
503 | offset = (devc->limit_samples - devc->num_samples) * 4; | |
504 | for (i = 0; i <= devc->rle_count; i++) { | |
505 | memcpy(devc->raw_sample_buf + offset + (i * 4), | |
506 | devc->sample, 4); | |
507 | } | |
508 | memset(devc->sample, 0, 4); | |
509 | devc->num_bytes = 0; | |
510 | devc->rle_count = 0; | |
511 | } | |
512 | } else { | |
513 | /* | |
514 | * This is the main loop telling us a timeout was reached, or | |
515 | * we've acquired all the samples we asked for -- we're done. | |
516 | * Send the (properly-ordered) buffer to the frontend. | |
517 | */ | |
625763e2 | 518 | sr_dbg("Received %d bytes, %d samples, %d decompressed samples.", |
55eca716 | 519 | devc->cnt_bytes, devc->cnt_samples, |
520 | devc->cnt_samples_rle); | |
a2b1a53b | 521 | if (devc->trigger_at_smpl != OLS_NO_TRIGGER) { |
625763e2 BV |
522 | /* |
523 | * A trigger was set up, so we need to tell the frontend | |
0aba65da UH |
524 | * about it. |
525 | */ | |
a2b1a53b | 526 | if (devc->trigger_at_smpl > 0) { |
625763e2 | 527 | /* There are pre-trigger samples, send those first. */ |
0aba65da UH |
528 | packet.type = SR_DF_LOGIC; |
529 | packet.payload = &logic; | |
a2b1a53b | 530 | logic.length = devc->trigger_at_smpl * 4; |
0aba65da UH |
531 | logic.unitsize = 4; |
532 | logic.data = devc->raw_sample_buf + | |
55eca716 | 533 | (devc->limit_samples - |
534 | devc->num_samples) * | |
535 | 4; | |
695dc859 | 536 | sr_session_send(sdi, &packet); |
0aba65da UH |
537 | } |
538 | ||
625763e2 | 539 | /* Send the trigger. */ |
0fa71943 | 540 | std_session_send_df_trigger(sdi); |
0aba65da | 541 | } |
2755ab36 | 542 | |
543 | /* Send post-trigger / all captured samples. */ | |
55eca716 | 544 | int num_pre_trigger_samples = devc->trigger_at_smpl == |
545 | OLS_NO_TRIGGER ? | |
546 | 0 : | |
547 | devc->trigger_at_smpl; | |
2755ab36 | 548 | packet.type = SR_DF_LOGIC; |
549 | packet.payload = &logic; | |
55eca716 | 550 | logic.length = |
551 | (devc->num_samples - num_pre_trigger_samples) * 4; | |
2755ab36 | 552 | logic.unitsize = 4; |
55eca716 | 553 | logic.data = devc->raw_sample_buf + |
554 | (num_pre_trigger_samples + devc->limit_samples - | |
555 | devc->num_samples) * | |
556 | 4; | |
2755ab36 | 557 | sr_session_send(sdi, &packet); |
558 | ||
0aba65da UH |
559 | g_free(devc->raw_sample_buf); |
560 | ||
459a0f26 | 561 | serial_flush(serial); |
0aba65da | 562 | abort_acquisition(sdi); |
0aba65da UH |
563 | } |
564 | ||
565 | return TRUE; | |
566 | } | |
f8fd8420 | 567 | |
55eca716 | 568 | static int |
569 | ols_set_basic_trigger_stage(const struct ols_basic_trigger_desc *trigger_desc, | |
570 | struct sr_serial_dev_inst *serial, int stage) | |
f8fd8420 | 571 | { |
572 | uint8_t cmd, arg[4]; | |
573 | ||
574 | cmd = CMD_SET_BASIC_TRIGGER_MASK0 + stage * 4; | |
3cc9e215 | 575 | if (ols_send_longdata(serial, cmd, trigger_desc->trigger_mask[stage]) != SR_OK) |
f8fd8420 | 576 | return SR_ERR; |
577 | ||
578 | cmd = CMD_SET_BASIC_TRIGGER_VALUE0 + stage * 4; | |
3cc9e215 | 579 | if (ols_send_longdata(serial, cmd, trigger_desc->trigger_value[stage]) != SR_OK) |
f8fd8420 | 580 | return SR_ERR; |
581 | ||
582 | cmd = CMD_SET_BASIC_TRIGGER_CONFIG0 + stage * 4; | |
583 | arg[0] = arg[1] = arg[3] = 0x00; | |
584 | arg[2] = stage; | |
b28e391a | 585 | if (stage == trigger_desc->num_stages - 1) |
f8fd8420 | 586 | /* Last stage, fire when this one matches. */ |
587 | arg[3] |= TRIGGER_START; | |
588 | if (send_longcommand(serial, cmd, arg) != SR_OK) | |
589 | return SR_ERR; | |
590 | ||
591 | return SR_OK; | |
592 | } | |
593 | ||
55eca716 | 594 | SR_PRIV int ols_prepare_acquisition(const struct sr_dev_inst *sdi) |
595 | { | |
f8fd8420 | 596 | int ret; |
f8fd8420 | 597 | |
598 | struct dev_context *devc = sdi->priv; | |
599 | struct sr_serial_dev_inst *serial = sdi->conn; | |
600 | ||
601 | int num_changroups = 0; | |
602 | uint8_t changroup_mask = 0; | |
603 | uint32_t channel_mask = ols_channel_mask(sdi); | |
604 | for (unsigned int i = 0; i < 4; i++) { | |
605 | if (channel_mask & (0xff << (i * 8))) { | |
606 | changroup_mask |= (1 << i); | |
607 | num_changroups++; | |
608 | } | |
609 | } | |
610 | ||
611 | /* | |
612 | * Limit readcount to prevent reading past the end of the hardware | |
613 | * buffer. Rather read too many samples than too few. | |
614 | */ | |
55eca716 | 615 | uint32_t samplecount = |
616 | MIN(devc->max_samples / num_changroups, devc->limit_samples); | |
f8fd8420 | 617 | uint32_t readcount = (samplecount + 3) / 4; |
618 | uint32_t delaycount; | |
619 | ||
620 | /* Basic triggers. */ | |
621 | struct ols_basic_trigger_desc basic_trigger_desc; | |
622 | if (convert_trigger(sdi, &basic_trigger_desc) != SR_OK) { | |
623 | sr_err("Failed to configure channels."); | |
624 | return SR_ERR; | |
625 | } | |
626 | if (basic_trigger_desc.num_stages > 0) { | |
627 | /* | |
628 | * According to http://mygizmos.org/ols/Logic-Sniffer-FPGA-Spec.pdf | |
629 | * reset command must be send prior each arm command | |
630 | */ | |
631 | sr_dbg("Send reset command before trigger configure"); | |
632 | if (ols_send_reset(serial) != SR_OK) | |
633 | return SR_ERR; | |
634 | ||
635 | delaycount = readcount * (1 - devc->capture_ratio / 100.0); | |
55eca716 | 636 | devc->trigger_at_smpl = (readcount - delaycount) * 4 - |
637 | basic_trigger_desc.num_stages; | |
b28e391a | 638 | for (int i = 0; i < basic_trigger_desc.num_stages; i++) { |
f8fd8420 | 639 | sr_dbg("Setting OLS stage %d trigger.", i); |
55eca716 | 640 | if ((ret = ols_set_basic_trigger_stage( |
641 | &basic_trigger_desc, serial, i)) != SR_OK) | |
f8fd8420 | 642 | return ret; |
643 | } | |
644 | } else { | |
645 | /* No triggers configured, force trigger on first stage. */ | |
646 | sr_dbg("Forcing trigger at stage 0."); | |
b28e391a | 647 | basic_trigger_desc.num_stages = 1; |
55eca716 | 648 | if ((ret = ols_set_basic_trigger_stage(&basic_trigger_desc, |
649 | serial, 0)) != SR_OK) | |
f8fd8420 | 650 | return ret; |
651 | delaycount = readcount; | |
652 | } | |
653 | ||
654 | /* Samplerate. */ | |
655 | sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)", | |
55eca716 | 656 | devc->cur_samplerate, devc->cur_samplerate_divider); |
657 | if (ols_send_longdata(serial, CMD_SET_DIVIDER, | |
658 | devc->cur_samplerate_divider & 0x00FFFFFF) != SR_OK) | |
f8fd8420 | 659 | return SR_ERR; |
660 | ||
661 | /* Send sample limit and pre/post-trigger capture ratio. */ | |
662 | sr_dbg("Setting sample limit %d, trigger point at %d", | |
55eca716 | 663 | (readcount - 1) * 4, (delaycount - 1) * 4); |
f8fd8420 | 664 | |
665 | if (devc->max_samples > 256 * 1024) { | |
55eca716 | 666 | if (ols_send_longdata(serial, CMD_CAPTURE_READCOUNT, |
667 | readcount - 1) != SR_OK) | |
f8fd8420 | 668 | return SR_ERR; |
55eca716 | 669 | if (ols_send_longdata(serial, CMD_CAPTURE_DELAYCOUNT, |
670 | delaycount - 1) != SR_OK) | |
f8fd8420 | 671 | return SR_ERR; |
672 | } else { | |
3cc9e215 | 673 | uint8_t arg[4]; |
55eca716 | 674 | WL16(&arg[0], readcount - 1); |
675 | WL16(&arg[2], delaycount - 1); | |
f8fd8420 | 676 | if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK) |
677 | return SR_ERR; | |
678 | } | |
679 | ||
680 | /* Flag register. */ | |
55eca716 | 681 | sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s, " |
682 | "%s clock%s", | |
683 | devc->capture_flags & CAPTURE_FLAG_INTERNAL_TEST_MODE ? "on" : | |
684 | "off", | |
685 | devc->capture_flags & CAPTURE_FLAG_EXTERNAL_TEST_MODE ? "on" : | |
686 | "off", | |
687 | devc->capture_flags & CAPTURE_FLAG_RLE ? "on" : "off", | |
688 | devc->capture_flags & CAPTURE_FLAG_NOISE_FILTER ? "on" : "off", | |
689 | devc->capture_flags & CAPTURE_FLAG_DEMUX ? "on" : "off", | |
690 | devc->capture_flags & CAPTURE_FLAG_CLOCK_EXTERNAL ? "external" : | |
691 | "internal", | |
692 | devc->capture_flags & CAPTURE_FLAG_CLOCK_EXTERNAL ? | |
693 | (devc->capture_flags & CAPTURE_FLAG_INVERT_EXT_CLOCK ? | |
694 | " on falling edge" : | |
695 | "on rising edge") : | |
696 | ""); | |
f8fd8420 | 697 | |
698 | /* | |
699 | * Enable/disable OLS channel groups in the flag register according | |
700 | * to the channel mask. 1 means "disable channel". | |
701 | */ | |
702 | devc->capture_flags &= ~0x3c; | |
703 | devc->capture_flags |= ~(changroup_mask << 2) & 0x3c; | |
704 | ||
705 | /* RLE mode is always zero, for now. */ | |
706 | ||
3cc9e215 | 707 | if (ols_send_longdata(serial, CMD_SET_FLAGS, devc->capture_flags) != SR_OK) |
f8fd8420 | 708 | return SR_ERR; |
709 | ||
710 | return SR_OK; | |
711 | } |