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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 | ||
aad6b9de | 142 | static void ols_metadata_quirks(struct sr_dev_inst *sdi) |
ad4174c1 GS |
143 | { |
144 | struct dev_context *devc; | |
145 | gboolean is_shrimp; | |
146 | ||
147 | if (!sdi) | |
148 | return; | |
149 | devc = sdi->priv; | |
150 | if (!devc) | |
151 | return; | |
152 | ||
153 | is_shrimp = sdi->model && strcmp(sdi->model, "Shrimp1.0") == 0; | |
154 | if (is_shrimp) { | |
155 | if (!devc->max_channels) | |
fbf9e657 | 156 | devc->max_channels = 4; |
ad4174c1 GS |
157 | if (!devc->max_samples) |
158 | devc->max_samples = 256 * 1024; | |
159 | if (!devc->max_samplerate) | |
160 | devc->max_samplerate = SR_MHZ(20); | |
161 | } | |
6f9234e6 | 162 | |
163 | if (sdi->version && strstr(sdi->version, "FPGA version 3.07")) | |
164 | devc->device_flags |= DEVICE_FLAG_IS_DEMON_CORE; | |
ad4174c1 GS |
165 | } |
166 | ||
838f0122 | 167 | SR_PRIV int ols_get_metadata(struct sr_dev_inst *sdi) |
0aba65da | 168 | { |
838f0122 | 169 | struct sr_serial_dev_inst *serial; |
0aba65da | 170 | struct dev_context *devc; |
4a34a74d | 171 | uint32_t tmp_int; |
6f9234e6 | 172 | uint8_t key, type; |
f4d3a4fb | 173 | int delay_ms; |
0aba65da UH |
174 | GString *tmp_str, *devname, *version; |
175 | guchar tmp_c; | |
176 | ||
838f0122 GS |
177 | serial = sdi->conn; |
178 | devc = sdi->priv; | |
0aba65da UH |
179 | |
180 | devname = g_string_new(""); | |
181 | version = g_string_new(""); | |
182 | ||
183 | key = 0xff; | |
184 | while (key) { | |
f4d3a4fb BV |
185 | delay_ms = serial_timeout(serial, 1); |
186 | if (serial_read_blocking(serial, &key, 1, delay_ms) != 1) | |
0aba65da | 187 | break; |
6f9234e6 | 188 | if (key == METADATA_TOKEN_END) { |
625763e2 BV |
189 | sr_dbg("Got metadata key 0x00, metadata ends."); |
190 | break; | |
191 | } | |
0aba65da | 192 | type = key >> 5; |
0aba65da UH |
193 | switch (type) { |
194 | case 0: | |
195 | /* NULL-terminated string */ | |
196 | tmp_str = g_string_new(""); | |
f4d3a4fb | 197 | delay_ms = serial_timeout(serial, 1); |
55eca716 | 198 | while (serial_read_blocking(serial, &tmp_c, 1, |
199 | delay_ms) == 1 && | |
200 | tmp_c != '\0') | |
0aba65da | 201 | g_string_append_c(tmp_str, tmp_c); |
55eca716 | 202 | sr_dbg("Got metadata token 0x%.2x value '%s'.", key, |
203 | tmp_str->str); | |
6f9234e6 | 204 | switch (key) { |
205 | case METADATA_TOKEN_DEVICE_NAME: | |
0aba65da | 206 | /* Device name */ |
55eca716 | 207 | devname = |
208 | g_string_append(devname, tmp_str->str); | |
0aba65da | 209 | break; |
6f9234e6 | 210 | case METADATA_TOKEN_FPGA_VERSION: |
0aba65da UH |
211 | /* FPGA firmware version */ |
212 | if (version->len) | |
213 | g_string_append(version, ", "); | |
214 | g_string_append(version, "FPGA version "); | |
215 | g_string_append(version, tmp_str->str); | |
216 | break; | |
6f9234e6 | 217 | case METADATA_TOKEN_ANCILLARY_VERSION: |
0aba65da UH |
218 | /* Ancillary version */ |
219 | if (version->len) | |
220 | g_string_append(version, ", "); | |
221 | g_string_append(version, "Ancillary version "); | |
222 | g_string_append(version, tmp_str->str); | |
223 | break; | |
224 | default: | |
55eca716 | 225 | sr_info("ols: unknown token 0x%.2x: '%s'", key, |
226 | tmp_str->str); | |
0aba65da UH |
227 | break; |
228 | } | |
229 | g_string_free(tmp_str, TRUE); | |
230 | break; | |
231 | case 1: | |
232 | /* 32-bit unsigned integer */ | |
f4d3a4fb | 233 | delay_ms = serial_timeout(serial, 4); |
55eca716 | 234 | if (serial_read_blocking(serial, &tmp_int, 4, |
235 | delay_ms) != 4) | |
0aba65da | 236 | break; |
016e72f3 | 237 | tmp_int = RB32(&tmp_int); |
55eca716 | 238 | sr_dbg("Got metadata token 0x%.2x value 0x%.8x.", key, |
239 | tmp_int); | |
6f9234e6 | 240 | switch (key) { |
241 | case METADATA_TOKEN_NUM_PROBES_LONG: | |
ba7dd8bb | 242 | /* Number of usable channels */ |
fbf9e657 | 243 | devc->max_channels = tmp_int; |
0aba65da | 244 | break; |
6f9234e6 | 245 | case METADATA_TOKEN_SAMPLE_MEMORY_BYTES: |
0aba65da UH |
246 | /* Amount of sample memory available (bytes) */ |
247 | devc->max_samples = tmp_int; | |
248 | break; | |
6f9234e6 | 249 | case METADATA_TOKEN_DYNAMIC_MEMORY_BYTES: |
0aba65da UH |
250 | /* Amount of dynamic memory available (bytes) */ |
251 | /* what is this for? */ | |
252 | break; | |
6f9234e6 | 253 | case METADATA_TOKEN_MAX_SAMPLE_RATE_HZ: |
f3f19d11 | 254 | /* Maximum sample rate (Hz) */ |
0aba65da UH |
255 | devc->max_samplerate = tmp_int; |
256 | break; | |
6f9234e6 | 257 | case METADATA_TOKEN_PROTOCOL_VERSION_LONG: |
0aba65da UH |
258 | /* protocol version */ |
259 | devc->protocol_version = tmp_int; | |
260 | break; | |
261 | default: | |
55eca716 | 262 | sr_info("Unknown token 0x%.2x: 0x%.8x.", key, |
263 | tmp_int); | |
0aba65da UH |
264 | break; |
265 | } | |
266 | break; | |
267 | case 2: | |
268 | /* 8-bit unsigned integer */ | |
f4d3a4fb BV |
269 | delay_ms = serial_timeout(serial, 1); |
270 | if (serial_read_blocking(serial, &tmp_c, 1, delay_ms) != 1) | |
0aba65da | 271 | break; |
55eca716 | 272 | sr_dbg("Got metadata token 0x%.2x value 0x%.2x.", key, |
273 | tmp_c); | |
6f9234e6 | 274 | switch (key) { |
275 | case METADATA_TOKEN_NUM_PROBES_SHORT: | |
ba7dd8bb | 276 | /* Number of usable channels */ |
fbf9e657 | 277 | devc->max_channels = tmp_c; |
0aba65da | 278 | break; |
6f9234e6 | 279 | case METADATA_TOKEN_PROTOCOL_VERSION_SHORT: |
0aba65da UH |
280 | /* protocol version */ |
281 | devc->protocol_version = tmp_c; | |
282 | break; | |
283 | default: | |
55eca716 | 284 | sr_info("Unknown token 0x%.2x: 0x%.2x.", key, |
285 | tmp_c); | |
0aba65da UH |
286 | break; |
287 | } | |
288 | break; | |
289 | default: | |
290 | /* unknown type */ | |
291 | break; | |
292 | } | |
293 | } | |
294 | ||
295 | sdi->model = devname->str; | |
296 | sdi->version = version->str; | |
297 | g_string_free(devname, FALSE); | |
298 | g_string_free(version, FALSE); | |
299 | ||
ad4174c1 | 300 | /* Optionally amend received metadata, model specific quirks. */ |
aad6b9de | 301 | ols_metadata_quirks(sdi); |
ad4174c1 | 302 | |
838f0122 | 303 | return SR_OK; |
0aba65da UH |
304 | } |
305 | ||
306 | SR_PRIV int ols_set_samplerate(const struct sr_dev_inst *sdi, | |
55eca716 | 307 | const uint64_t samplerate) |
0aba65da UH |
308 | { |
309 | struct dev_context *devc; | |
310 | ||
311 | devc = sdi->priv; | |
e46aa4f6 | 312 | if (devc->max_samplerate && samplerate > devc->max_samplerate) |
0aba65da UH |
313 | return SR_ERR_SAMPLERATE; |
314 | ||
315 | if (samplerate > CLOCK_RATE) { | |
6ebe0039 | 316 | sr_info("Enabling demux mode."); |
a80bed76 | 317 | devc->capture_flags |= CAPTURE_FLAG_DEMUX; |
318 | devc->capture_flags &= ~CAPTURE_FLAG_NOISE_FILTER; | |
55eca716 | 319 | devc->cur_samplerate_divider = |
320 | (CLOCK_RATE * 2 / samplerate) - 1; | |
0aba65da | 321 | } else { |
6ebe0039 | 322 | sr_info("Disabling demux mode."); |
a80bed76 | 323 | devc->capture_flags &= ~CAPTURE_FLAG_DEMUX; |
324 | devc->capture_flags |= CAPTURE_FLAG_NOISE_FILTER; | |
0aba65da UH |
325 | devc->cur_samplerate_divider = (CLOCK_RATE / samplerate) - 1; |
326 | } | |
327 | ||
328 | /* Calculate actual samplerate used and complain if it is different | |
329 | * from the requested. | |
330 | */ | |
331 | devc->cur_samplerate = CLOCK_RATE / (devc->cur_samplerate_divider + 1); | |
a80bed76 | 332 | if (devc->capture_flags & CAPTURE_FLAG_DEMUX) |
0aba65da UH |
333 | devc->cur_samplerate *= 2; |
334 | if (devc->cur_samplerate != samplerate) | |
55eca716 | 335 | sr_info("Can't match samplerate %" PRIu64 ", using %" PRIu64 |
336 | ".", | |
337 | samplerate, devc->cur_samplerate); | |
0aba65da UH |
338 | |
339 | return SR_OK; | |
340 | } | |
341 | ||
342 | SR_PRIV void abort_acquisition(const struct sr_dev_inst *sdi) | |
343 | { | |
459a0f26 | 344 | struct sr_serial_dev_inst *serial; |
0aba65da | 345 | |
459a0f26 | 346 | serial = sdi->conn; |
7dd1dd9f | 347 | ols_send_reset(serial); |
6d8182b6 | 348 | |
102f1239 | 349 | serial_source_remove(sdi->session, serial); |
0aba65da | 350 | |
bee2b016 | 351 | std_session_send_df_end(sdi); |
0aba65da UH |
352 | } |
353 | ||
354 | SR_PRIV int ols_receive_data(int fd, int revents, void *cb_data) | |
355 | { | |
459a0f26 | 356 | struct dev_context *devc; |
625763e2 | 357 | struct sr_dev_inst *sdi; |
459a0f26 | 358 | struct sr_serial_dev_inst *serial; |
0aba65da UH |
359 | struct sr_datafeed_packet packet; |
360 | struct sr_datafeed_logic logic; | |
fe9ac252 | 361 | uint32_t sample; |
f8fd8420 | 362 | int num_changroups, offset, j; |
b1de0407 | 363 | unsigned int i; |
0aba65da | 364 | unsigned char byte; |
625763e2 BV |
365 | |
366 | (void)fd; | |
367 | ||
368 | sdi = cb_data; | |
369 | serial = sdi->conn; | |
370 | devc = sdi->priv; | |
0aba65da | 371 | |
8105e829 DE |
372 | if (devc->num_transfers == 0 && revents == 0) { |
373 | /* Ignore timeouts as long as we haven't received anything */ | |
374 | return TRUE; | |
375 | } | |
376 | ||
0aba65da | 377 | if (devc->num_transfers++ == 0) { |
0aba65da UH |
378 | devc->raw_sample_buf = g_try_malloc(devc->limit_samples * 4); |
379 | if (!devc->raw_sample_buf) { | |
380 | sr_err("Sample buffer malloc failed."); | |
381 | return FALSE; | |
382 | } | |
383 | /* fill with 1010... for debugging */ | |
384 | memset(devc->raw_sample_buf, 0x82, devc->limit_samples * 4); | |
385 | } | |
386 | ||
f8fd8420 | 387 | num_changroups = 0; |
be15c51e | 388 | for (i = 0x20; i > 0x02; i >>= 1) { |
a80bed76 | 389 | if ((devc->capture_flags & i) == 0) { |
f8fd8420 | 390 | num_changroups++; |
f51acd69 | 391 | } |
0aba65da UH |
392 | } |
393 | ||
faf72024 | 394 | if (revents == G_IO_IN && devc->num_samples < devc->limit_samples) { |
9f5d4c3c | 395 | if (serial_read_nonblocking(serial, &byte, 1) != 1) |
0aba65da | 396 | return FALSE; |
625763e2 | 397 | devc->cnt_bytes++; |
0aba65da UH |
398 | |
399 | /* Ignore it if we've read enough. */ | |
400 | if (devc->num_samples >= devc->limit_samples) | |
401 | return TRUE; | |
402 | ||
403 | devc->sample[devc->num_bytes++] = byte; | |
6d16fdfb | 404 | sr_spew("Received byte 0x%.2x.", byte); |
f8fd8420 | 405 | if (devc->num_bytes == num_changroups) { |
625763e2 BV |
406 | devc->cnt_samples++; |
407 | devc->cnt_samples_rle++; | |
408 | /* | |
409 | * Got a full sample. Convert from the OLS's little-endian | |
410 | * sample to the local format. | |
411 | */ | |
55eca716 | 412 | sample = devc->sample[0] | (devc->sample[1] << 8) | |
413 | (devc->sample[2] << 16) | | |
414 | (devc->sample[3] << 24); | |
415 | sr_dbg("Received sample 0x%.*x.", devc->num_bytes * 2, | |
416 | sample); | |
a80bed76 | 417 | if (devc->capture_flags & CAPTURE_FLAG_RLE) { |
0aba65da | 418 | /* |
00d04d3b BV |
419 | * In RLE mode the high bit of the sample is the |
420 | * "count" flag, meaning this sample is the number | |
421 | * of times the previous sample occurred. | |
0aba65da UH |
422 | */ |
423 | if (devc->sample[devc->num_bytes - 1] & 0x80) { | |
00d04d3b | 424 | /* Clear the high bit. */ |
55eca716 | 425 | sample &= ~(0x80 << (devc->num_bytes - |
426 | 1) * 8); | |
fe9ac252 | 427 | devc->rle_count = sample; |
55eca716 | 428 | devc->cnt_samples_rle += |
429 | devc->rle_count; | |
430 | sr_dbg("RLE count: %u.", | |
431 | devc->rle_count); | |
0aba65da UH |
432 | devc->num_bytes = 0; |
433 | return TRUE; | |
434 | } | |
435 | } | |
436 | devc->num_samples += devc->rle_count + 1; | |
437 | if (devc->num_samples > devc->limit_samples) { | |
438 | /* Save us from overrunning the buffer. */ | |
55eca716 | 439 | devc->rle_count -= |
440 | devc->num_samples - devc->limit_samples; | |
0aba65da UH |
441 | devc->num_samples = devc->limit_samples; |
442 | } | |
443 | ||
f8fd8420 | 444 | if (num_changroups < 4) { |
0aba65da UH |
445 | /* |
446 | * Some channel groups may have been turned | |
447 | * off, to speed up transfer between the | |
448 | * hardware and the PC. Expand that here before | |
449 | * submitting it over the session bus -- | |
450 | * whatever is listening on the bus will be | |
451 | * expecting a full 32-bit sample, based on | |
ba7dd8bb | 452 | * the number of channels. |
0aba65da UH |
453 | */ |
454 | j = 0; | |
cfe55d09 | 455 | uint8_t tmp_sample[4] = { 0, 0, 0, 0 }; |
0aba65da | 456 | for (i = 0; i < 4; i++) { |
55eca716 | 457 | if (((devc->capture_flags >> 2) & |
458 | (1 << i)) == 0) { | |
0aba65da UH |
459 | /* |
460 | * This channel group was | |
461 | * enabled, copy from received | |
462 | * sample. | |
463 | */ | |
cfe55d09 | 464 | tmp_sample[i] = |
55eca716 | 465 | devc->sample[j++]; |
0aba65da UH |
466 | } |
467 | } | |
cfe55d09 | 468 | memcpy(devc->sample, tmp_sample, 4); |
29f15d52 | 469 | sr_spew("Expanded sample: 0x%.2hhx%.2hhx%.2hhx%.2hhx ", |
55eca716 | 470 | devc->sample[3], devc->sample[2], |
471 | devc->sample[1], devc->sample[0]); | |
0aba65da UH |
472 | } |
473 | ||
625763e2 BV |
474 | /* |
475 | * the OLS sends its sample buffer backwards. | |
0aba65da UH |
476 | * store it in reverse order here, so we can dump |
477 | * this on the session bus later. | |
478 | */ | |
479 | offset = (devc->limit_samples - devc->num_samples) * 4; | |
480 | for (i = 0; i <= devc->rle_count; i++) { | |
481 | memcpy(devc->raw_sample_buf + offset + (i * 4), | |
482 | devc->sample, 4); | |
483 | } | |
484 | memset(devc->sample, 0, 4); | |
485 | devc->num_bytes = 0; | |
486 | devc->rle_count = 0; | |
487 | } | |
488 | } else { | |
489 | /* | |
490 | * This is the main loop telling us a timeout was reached, or | |
491 | * we've acquired all the samples we asked for -- we're done. | |
492 | * Send the (properly-ordered) buffer to the frontend. | |
493 | */ | |
625763e2 | 494 | sr_dbg("Received %d bytes, %d samples, %d decompressed samples.", |
55eca716 | 495 | devc->cnt_bytes, devc->cnt_samples, |
496 | devc->cnt_samples_rle); | |
a2b1a53b | 497 | if (devc->trigger_at_smpl != OLS_NO_TRIGGER) { |
625763e2 BV |
498 | /* |
499 | * A trigger was set up, so we need to tell the frontend | |
0aba65da UH |
500 | * about it. |
501 | */ | |
a2b1a53b | 502 | if (devc->trigger_at_smpl > 0) { |
625763e2 | 503 | /* There are pre-trigger samples, send those first. */ |
0aba65da UH |
504 | packet.type = SR_DF_LOGIC; |
505 | packet.payload = &logic; | |
a2b1a53b | 506 | logic.length = devc->trigger_at_smpl * 4; |
0aba65da UH |
507 | logic.unitsize = 4; |
508 | logic.data = devc->raw_sample_buf + | |
55eca716 | 509 | (devc->limit_samples - |
510 | devc->num_samples) * | |
511 | 4; | |
695dc859 | 512 | sr_session_send(sdi, &packet); |
0aba65da UH |
513 | } |
514 | ||
625763e2 | 515 | /* Send the trigger. */ |
0fa71943 | 516 | std_session_send_df_trigger(sdi); |
0aba65da | 517 | } |
2755ab36 | 518 | |
519 | /* Send post-trigger / all captured samples. */ | |
55eca716 | 520 | int num_pre_trigger_samples = devc->trigger_at_smpl == |
521 | OLS_NO_TRIGGER ? | |
522 | 0 : | |
523 | devc->trigger_at_smpl; | |
2755ab36 | 524 | packet.type = SR_DF_LOGIC; |
525 | packet.payload = &logic; | |
55eca716 | 526 | logic.length = |
527 | (devc->num_samples - num_pre_trigger_samples) * 4; | |
2755ab36 | 528 | logic.unitsize = 4; |
55eca716 | 529 | logic.data = devc->raw_sample_buf + |
530 | (num_pre_trigger_samples + devc->limit_samples - | |
531 | devc->num_samples) * | |
532 | 4; | |
2755ab36 | 533 | sr_session_send(sdi, &packet); |
534 | ||
0aba65da UH |
535 | g_free(devc->raw_sample_buf); |
536 | ||
459a0f26 | 537 | serial_flush(serial); |
0aba65da | 538 | abort_acquisition(sdi); |
0aba65da UH |
539 | } |
540 | ||
541 | return TRUE; | |
542 | } | |
f8fd8420 | 543 | |
55eca716 | 544 | static int |
545 | ols_set_basic_trigger_stage(const struct ols_basic_trigger_desc *trigger_desc, | |
546 | struct sr_serial_dev_inst *serial, int stage) | |
f8fd8420 | 547 | { |
548 | uint8_t cmd, arg[4]; | |
549 | ||
550 | cmd = CMD_SET_BASIC_TRIGGER_MASK0 + stage * 4; | |
3cc9e215 | 551 | if (ols_send_longdata(serial, cmd, trigger_desc->trigger_mask[stage]) != SR_OK) |
f8fd8420 | 552 | return SR_ERR; |
553 | ||
554 | cmd = CMD_SET_BASIC_TRIGGER_VALUE0 + stage * 4; | |
3cc9e215 | 555 | if (ols_send_longdata(serial, cmd, trigger_desc->trigger_value[stage]) != SR_OK) |
f8fd8420 | 556 | return SR_ERR; |
557 | ||
558 | cmd = CMD_SET_BASIC_TRIGGER_CONFIG0 + stage * 4; | |
559 | arg[0] = arg[1] = arg[3] = 0x00; | |
560 | arg[2] = stage; | |
b28e391a | 561 | if (stage == trigger_desc->num_stages - 1) |
f8fd8420 | 562 | /* Last stage, fire when this one matches. */ |
563 | arg[3] |= TRIGGER_START; | |
564 | if (send_longcommand(serial, cmd, arg) != SR_OK) | |
565 | return SR_ERR; | |
566 | ||
567 | return SR_OK; | |
568 | } | |
569 | ||
55eca716 | 570 | SR_PRIV int ols_prepare_acquisition(const struct sr_dev_inst *sdi) |
571 | { | |
f8fd8420 | 572 | int ret; |
f8fd8420 | 573 | |
574 | struct dev_context *devc = sdi->priv; | |
575 | struct sr_serial_dev_inst *serial = sdi->conn; | |
576 | ||
577 | int num_changroups = 0; | |
578 | uint8_t changroup_mask = 0; | |
579 | uint32_t channel_mask = ols_channel_mask(sdi); | |
580 | for (unsigned int i = 0; i < 4; i++) { | |
581 | if (channel_mask & (0xff << (i * 8))) { | |
582 | changroup_mask |= (1 << i); | |
583 | num_changroups++; | |
584 | } | |
585 | } | |
586 | ||
587 | /* | |
588 | * Limit readcount to prevent reading past the end of the hardware | |
589 | * buffer. Rather read too many samples than too few. | |
590 | */ | |
55eca716 | 591 | uint32_t samplecount = |
592 | MIN(devc->max_samples / num_changroups, devc->limit_samples); | |
f8fd8420 | 593 | uint32_t readcount = (samplecount + 3) / 4; |
594 | uint32_t delaycount; | |
595 | ||
596 | /* Basic triggers. */ | |
597 | struct ols_basic_trigger_desc basic_trigger_desc; | |
598 | if (convert_trigger(sdi, &basic_trigger_desc) != SR_OK) { | |
599 | sr_err("Failed to configure channels."); | |
600 | return SR_ERR; | |
601 | } | |
602 | if (basic_trigger_desc.num_stages > 0) { | |
603 | /* | |
604 | * According to http://mygizmos.org/ols/Logic-Sniffer-FPGA-Spec.pdf | |
605 | * reset command must be send prior each arm command | |
606 | */ | |
607 | sr_dbg("Send reset command before trigger configure"); | |
608 | if (ols_send_reset(serial) != SR_OK) | |
609 | return SR_ERR; | |
610 | ||
611 | delaycount = readcount * (1 - devc->capture_ratio / 100.0); | |
55eca716 | 612 | devc->trigger_at_smpl = (readcount - delaycount) * 4 - |
613 | basic_trigger_desc.num_stages; | |
b28e391a | 614 | for (int i = 0; i < basic_trigger_desc.num_stages; i++) { |
f8fd8420 | 615 | sr_dbg("Setting OLS stage %d trigger.", i); |
55eca716 | 616 | if ((ret = ols_set_basic_trigger_stage( |
617 | &basic_trigger_desc, serial, i)) != SR_OK) | |
f8fd8420 | 618 | return ret; |
619 | } | |
620 | } else { | |
621 | /* No triggers configured, force trigger on first stage. */ | |
622 | sr_dbg("Forcing trigger at stage 0."); | |
b28e391a | 623 | basic_trigger_desc.num_stages = 1; |
55eca716 | 624 | if ((ret = ols_set_basic_trigger_stage(&basic_trigger_desc, |
625 | serial, 0)) != SR_OK) | |
f8fd8420 | 626 | return ret; |
627 | delaycount = readcount; | |
628 | } | |
629 | ||
630 | /* Samplerate. */ | |
631 | sr_dbg("Setting samplerate to %" PRIu64 "Hz (divider %u)", | |
55eca716 | 632 | devc->cur_samplerate, devc->cur_samplerate_divider); |
633 | if (ols_send_longdata(serial, CMD_SET_DIVIDER, | |
634 | devc->cur_samplerate_divider & 0x00FFFFFF) != SR_OK) | |
f8fd8420 | 635 | return SR_ERR; |
636 | ||
637 | /* Send sample limit and pre/post-trigger capture ratio. */ | |
638 | sr_dbg("Setting sample limit %d, trigger point at %d", | |
55eca716 | 639 | (readcount - 1) * 4, (delaycount - 1) * 4); |
f8fd8420 | 640 | |
641 | if (devc->max_samples > 256 * 1024) { | |
55eca716 | 642 | if (ols_send_longdata(serial, CMD_CAPTURE_READCOUNT, |
643 | readcount - 1) != SR_OK) | |
f8fd8420 | 644 | return SR_ERR; |
55eca716 | 645 | if (ols_send_longdata(serial, CMD_CAPTURE_DELAYCOUNT, |
646 | delaycount - 1) != SR_OK) | |
f8fd8420 | 647 | return SR_ERR; |
648 | } else { | |
3cc9e215 | 649 | uint8_t arg[4]; |
55eca716 | 650 | WL16(&arg[0], readcount - 1); |
651 | WL16(&arg[2], delaycount - 1); | |
f8fd8420 | 652 | if (send_longcommand(serial, CMD_CAPTURE_SIZE, arg) != SR_OK) |
653 | return SR_ERR; | |
654 | } | |
655 | ||
656 | /* Flag register. */ | |
55eca716 | 657 | sr_dbg("Setting intpat %s, extpat %s, RLE %s, noise_filter %s, demux %s, " |
658 | "%s clock%s", | |
659 | devc->capture_flags & CAPTURE_FLAG_INTERNAL_TEST_MODE ? "on" : | |
660 | "off", | |
661 | devc->capture_flags & CAPTURE_FLAG_EXTERNAL_TEST_MODE ? "on" : | |
662 | "off", | |
663 | devc->capture_flags & CAPTURE_FLAG_RLE ? "on" : "off", | |
664 | devc->capture_flags & CAPTURE_FLAG_NOISE_FILTER ? "on" : "off", | |
665 | devc->capture_flags & CAPTURE_FLAG_DEMUX ? "on" : "off", | |
666 | devc->capture_flags & CAPTURE_FLAG_CLOCK_EXTERNAL ? "external" : | |
667 | "internal", | |
668 | devc->capture_flags & CAPTURE_FLAG_CLOCK_EXTERNAL ? | |
669 | (devc->capture_flags & CAPTURE_FLAG_INVERT_EXT_CLOCK ? | |
670 | " on falling edge" : | |
671 | "on rising edge") : | |
672 | ""); | |
f8fd8420 | 673 | |
674 | /* | |
675 | * Enable/disable OLS channel groups in the flag register according | |
676 | * to the channel mask. 1 means "disable channel". | |
677 | */ | |
678 | devc->capture_flags &= ~0x3c; | |
679 | devc->capture_flags |= ~(changroup_mask << 2) & 0x3c; | |
680 | ||
681 | /* RLE mode is always zero, for now. */ | |
682 | ||
3cc9e215 | 683 | if (ols_send_longdata(serial, CMD_SET_FLAGS, devc->capture_flags) != SR_OK) |
f8fd8420 | 684 | return SR_ERR; |
685 | ||
686 | return SR_OK; | |
687 | } |