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b908f067 UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #include <ftdi.h> | |
22 | #include <glib.h> | |
45c59c8b BV |
23 | #include "libsigrok.h" |
24 | #include "libsigrok-internal.h" | |
45e080b6 | 25 | #include "protocol.h" |
b908f067 UH |
26 | |
27 | /* Probes are numbered 0-7. */ | |
1bec72d2 | 28 | SR_PRIV const char *chronovu_la8_probe_names[NUM_PROBES + 1] = { |
78693401 | 29 | "0", "1", "2", "3", "4", "5", "6", "7", |
b908f067 UH |
30 | NULL, |
31 | }; | |
32 | ||
b908f067 UH |
33 | SR_PRIV void fill_supported_samplerates_if_needed(void) |
34 | { | |
35 | int i; | |
36 | ||
1bec72d2 | 37 | if (chronovu_la8_samplerates[0] != 0) |
b908f067 UH |
38 | return; |
39 | ||
b908f067 | 40 | for (i = 0; i < 255; i++) |
1bec72d2 BV |
41 | chronovu_la8_samplerates[254 - i] = SR_MHZ(100) / (i + 1); |
42 | chronovu_la8_samplerates[255] = 0; | |
b908f067 UH |
43 | } |
44 | ||
45 | /** | |
46 | * Check if the given samplerate is supported by the LA8 hardware. | |
47 | * | |
48 | * @param samplerate The samplerate (in Hz) to check. | |
49 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
50 | */ | |
51 | SR_PRIV int is_valid_samplerate(uint64_t samplerate) | |
52 | { | |
53 | int i; | |
54 | ||
55 | fill_supported_samplerates_if_needed(); | |
56 | ||
57 | for (i = 0; i < 255; i++) { | |
1bec72d2 | 58 | if (chronovu_la8_samplerates[i] == samplerate) |
b908f067 UH |
59 | return 1; |
60 | } | |
61 | ||
f3a35908 | 62 | sr_err("Invalid samplerate (%" PRIu64 "Hz).", samplerate); |
b908f067 UH |
63 | |
64 | return 0; | |
65 | } | |
66 | ||
67 | /** | |
68 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
69 | * | |
70 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
71 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
72 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
73 | * | |
74 | * @param samplerate The samplerate in Hz. | |
75 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
76 | */ | |
77 | SR_PRIV uint8_t samplerate_to_divcount(uint64_t samplerate) | |
78 | { | |
79 | if (samplerate == 0) { | |
f3a35908 | 80 | sr_err("%s: samplerate was 0.", __func__); |
b908f067 UH |
81 | return 0xff; |
82 | } | |
83 | ||
84 | if (!is_valid_samplerate(samplerate)) { | |
f3a35908 | 85 | sr_err("%s: Can't get divcount, samplerate invalid.", __func__); |
b908f067 UH |
86 | return 0xff; |
87 | } | |
88 | ||
89 | return (SR_MHZ(100) / samplerate) - 1; | |
90 | } | |
91 | ||
92 | /** | |
93 | * Write data of a certain length to the LA8's FTDI device. | |
94 | * | |
1644fb24 BV |
95 | * @param devc The struct containing private per-device-instance data. Must not |
96 | * be NULL. devc->ftdic must not be NULL either. | |
b908f067 UH |
97 | * @param buf The buffer containing the data to write. Must not be NULL. |
98 | * @param size The number of bytes to write. Must be >= 0. | |
99 | * @return The number of bytes written, or a negative value upon errors. | |
100 | */ | |
1644fb24 | 101 | SR_PRIV int la8_write(struct dev_context *devc, uint8_t *buf, int size) |
b908f067 UH |
102 | { |
103 | int bytes_written; | |
104 | ||
1644fb24 | 105 | /* Note: Caller checked that devc and devc->ftdic != NULL. */ |
b908f067 UH |
106 | |
107 | if (!buf) { | |
f3a35908 | 108 | sr_err("%s: buf was NULL.", __func__); |
b908f067 UH |
109 | return SR_ERR_ARG; |
110 | } | |
111 | ||
112 | if (size < 0) { | |
f3a35908 | 113 | sr_err("%s: size was < 0.", __func__); |
b908f067 UH |
114 | return SR_ERR_ARG; |
115 | } | |
116 | ||
1644fb24 | 117 | bytes_written = ftdi_write_data(devc->ftdic, buf, size); |
b908f067 UH |
118 | |
119 | if (bytes_written < 0) { | |
f3a35908 | 120 | sr_err("%s: ftdi_write_data: (%d) %s.", __func__, |
1644fb24 BV |
121 | bytes_written, ftdi_get_error_string(devc->ftdic)); |
122 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 | 123 | } else if (bytes_written != size) { |
f3a35908 | 124 | sr_err("%s: bytes to write: %d, bytes written: %d.", |
b908f067 | 125 | __func__, size, bytes_written); |
1644fb24 | 126 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 UH |
127 | } |
128 | ||
129 | return bytes_written; | |
130 | } | |
131 | ||
132 | /** | |
133 | * Read a certain amount of bytes from the LA8's FTDI device. | |
134 | * | |
1644fb24 BV |
135 | * @param devc The struct containing private per-device-instance data. Must not |
136 | * be NULL. devc->ftdic must not be NULL either. | |
b908f067 UH |
137 | * @param buf The buffer where the received data will be stored. Must not |
138 | * be NULL. | |
139 | * @param size The number of bytes to read. Must be >= 1. | |
140 | * @return The number of bytes read, or a negative value upon errors. | |
141 | */ | |
1644fb24 | 142 | SR_PRIV int la8_read(struct dev_context *devc, uint8_t *buf, int size) |
b908f067 UH |
143 | { |
144 | int bytes_read; | |
145 | ||
1644fb24 | 146 | /* Note: Caller checked that devc and devc->ftdic != NULL. */ |
b908f067 UH |
147 | |
148 | if (!buf) { | |
f3a35908 | 149 | sr_err("%s: buf was NULL.", __func__); |
b908f067 UH |
150 | return SR_ERR_ARG; |
151 | } | |
152 | ||
153 | if (size <= 0) { | |
f3a35908 | 154 | sr_err("%s: size was <= 0.", __func__); |
b908f067 UH |
155 | return SR_ERR_ARG; |
156 | } | |
157 | ||
1644fb24 | 158 | bytes_read = ftdi_read_data(devc->ftdic, buf, size); |
b908f067 UH |
159 | |
160 | if (bytes_read < 0) { | |
f3a35908 | 161 | sr_err("%s: ftdi_read_data: (%d) %s.", __func__, |
1644fb24 | 162 | bytes_read, ftdi_get_error_string(devc->ftdic)); |
b908f067 | 163 | } else if (bytes_read != size) { |
f3a35908 | 164 | // sr_err("%s: Bytes to read: %d, bytes read: %d.", |
b908f067 UH |
165 | // __func__, size, bytes_read); |
166 | } | |
167 | ||
168 | return bytes_read; | |
169 | } | |
170 | ||
1644fb24 | 171 | SR_PRIV int la8_close(struct dev_context *devc) |
b908f067 UH |
172 | { |
173 | int ret; | |
174 | ||
1644fb24 | 175 | if (!devc) { |
f3a35908 | 176 | sr_err("%s: devc was NULL.", __func__); |
b908f067 UH |
177 | return SR_ERR_ARG; |
178 | } | |
179 | ||
1644fb24 | 180 | if (!devc->ftdic) { |
f3a35908 | 181 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
182 | return SR_ERR_ARG; |
183 | } | |
184 | ||
1644fb24 | 185 | if ((ret = ftdi_usb_close(devc->ftdic)) < 0) { |
f3a35908 | 186 | sr_err("%s: ftdi_usb_close: (%d) %s.", |
1644fb24 | 187 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
b908f067 UH |
188 | } |
189 | ||
190 | return ret; | |
191 | } | |
192 | ||
193 | /** | |
194 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
195 | * | |
1644fb24 | 196 | * @param devc The struct containing private per-device-instance data. |
b908f067 UH |
197 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
198 | */ | |
1644fb24 | 199 | SR_PRIV int la8_close_usb_reset_sequencer(struct dev_context *devc) |
b908f067 UH |
200 | { |
201 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
202 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
203 | int ret; | |
204 | ||
1644fb24 | 205 | if (!devc) { |
f3a35908 | 206 | sr_err("%s: devc was NULL.", __func__); |
b908f067 UH |
207 | return SR_ERR_ARG; |
208 | } | |
209 | ||
1644fb24 | 210 | if (!devc->ftdic) { |
f3a35908 | 211 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
212 | return SR_ERR_ARG; |
213 | } | |
214 | ||
1644fb24 | 215 | if (devc->ftdic->usb_dev) { |
b908f067 | 216 | /* Reset the LA8 sequencer logic, then wait 100ms. */ |
f3a35908 | 217 | sr_dbg("Resetting sequencer logic."); |
1644fb24 | 218 | (void) la8_write(devc, buf, 8); /* Ignore errors. */ |
b908f067 UH |
219 | g_usleep(100 * 1000); |
220 | ||
221 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
f3a35908 | 222 | sr_dbg("Purging buffers, resetting+closing FTDI device."); |
b908f067 UH |
223 | |
224 | /* Log errors, but ignore them (i.e., don't abort). */ | |
1644fb24 | 225 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) |
f3a35908 | 226 | sr_err("%s: ftdi_usb_purge_buffers: (%d) %s.", |
1644fb24 BV |
227 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
228 | if ((ret = ftdi_usb_reset(devc->ftdic)) < 0) | |
f3a35908 | 229 | sr_err("%s: ftdi_usb_reset: (%d) %s.", __func__, |
1644fb24 BV |
230 | ret, ftdi_get_error_string(devc->ftdic)); |
231 | if ((ret = ftdi_usb_close(devc->ftdic)) < 0) | |
f3a35908 | 232 | sr_err("%s: ftdi_usb_close: (%d) %s.", __func__, |
1644fb24 | 233 | ret, ftdi_get_error_string(devc->ftdic)); |
b908f067 UH |
234 | } |
235 | ||
236 | /* Close USB device, deinitialize and free the FTDI context. */ | |
1644fb24 BV |
237 | ftdi_free(devc->ftdic); /* Returns void. */ |
238 | devc->ftdic = NULL; | |
b908f067 UH |
239 | |
240 | return SR_OK; | |
241 | } | |
242 | ||
243 | /** | |
244 | * Reset the ChronoVu LA8. | |
245 | * | |
246 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
247 | * | |
1644fb24 | 248 | * @param devc The struct containing private per-device-instance data. |
b908f067 UH |
249 | * @return SR_OK upon success, SR_ERR upon failure. |
250 | */ | |
1644fb24 | 251 | SR_PRIV int la8_reset(struct dev_context *devc) |
b908f067 UH |
252 | { |
253 | uint8_t buf[BS]; | |
254 | time_t done, now; | |
255 | int bytes_read; | |
256 | ||
1644fb24 | 257 | if (!devc) { |
f3a35908 | 258 | sr_err("%s: devc was NULL.", __func__); |
b908f067 UH |
259 | return SR_ERR_ARG; |
260 | } | |
261 | ||
1644fb24 | 262 | if (!devc->ftdic) { |
f3a35908 | 263 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
264 | return SR_ERR_ARG; |
265 | } | |
266 | ||
f3a35908 | 267 | sr_dbg("Resetting the device."); |
b908f067 UH |
268 | |
269 | /* | |
270 | * Purge pending read data from the FTDI hardware FIFO until | |
271 | * no more data is left, or a timeout occurs (after 20s). | |
272 | */ | |
273 | done = 20 + time(NULL); | |
274 | do { | |
275 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
1644fb24 | 276 | bytes_read = la8_read(devc, (uint8_t *)&buf, BS); |
b908f067 UH |
277 | now = time(NULL); |
278 | } while ((done > now) && (bytes_read > 0)); | |
279 | ||
280 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
1644fb24 | 281 | (void) la8_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 | 282 | |
f3a35908 | 283 | sr_dbg("Device reset finished."); |
b908f067 UH |
284 | |
285 | return SR_OK; | |
286 | } | |
287 | ||
014359e3 | 288 | SR_PRIV int configure_probes(const struct sr_dev_inst *sdi) |
b908f067 | 289 | { |
014359e3 | 290 | struct dev_context *devc; |
b908f067 UH |
291 | const struct sr_probe *probe; |
292 | const GSList *l; | |
293 | uint8_t probe_bit; | |
294 | char *tc; | |
295 | ||
014359e3 | 296 | devc = sdi->priv; |
1644fb24 BV |
297 | devc->trigger_pattern = 0; |
298 | devc->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
b908f067 | 299 | |
014359e3 | 300 | for (l = sdi->probes; l; l = l->next) { |
b908f067 UH |
301 | probe = (struct sr_probe *)l->data; |
302 | ||
303 | if (!probe) { | |
f3a35908 | 304 | sr_err("%s: probe was NULL.", __func__); |
b908f067 UH |
305 | return SR_ERR; |
306 | } | |
307 | ||
308 | /* Skip disabled probes. */ | |
309 | if (!probe->enabled) | |
310 | continue; | |
311 | ||
312 | /* Skip (enabled) probes with no configured trigger. */ | |
313 | if (!probe->trigger) | |
314 | continue; | |
315 | ||
316 | /* Note: Must only be run if probe->trigger != NULL. */ | |
317 | if (probe->index < 0 || probe->index > 7) { | |
f3a35908 UH |
318 | sr_err("%s: Invalid probe index %d, must be " |
319 | "between 0 and 7.", __func__, probe->index); | |
b908f067 UH |
320 | return SR_ERR; |
321 | } | |
322 | ||
b35c8293 | 323 | probe_bit = (1 << (probe->index)); |
b908f067 UH |
324 | |
325 | /* Configure the probe's trigger mask and trigger pattern. */ | |
326 | for (tc = probe->trigger; tc && *tc; tc++) { | |
1644fb24 | 327 | devc->trigger_mask |= probe_bit; |
b908f067 UH |
328 | |
329 | /* Sanity check, LA8 only supports low/high trigger. */ | |
330 | if (*tc != '0' && *tc != '1') { | |
f3a35908 UH |
331 | sr_err("%s: Invalid trigger '%c', only " |
332 | "'0'/'1' supported.", __func__, *tc); | |
b908f067 UH |
333 | return SR_ERR; |
334 | } | |
335 | ||
336 | if (*tc == '1') | |
1644fb24 | 337 | devc->trigger_pattern |= probe_bit; |
b908f067 UH |
338 | } |
339 | } | |
340 | ||
f3a35908 | 341 | sr_dbg("Trigger mask = 0x%x, trigger pattern = 0x%x.", |
1644fb24 | 342 | devc->trigger_mask, devc->trigger_pattern); |
b908f067 UH |
343 | |
344 | return SR_OK; | |
345 | } | |
346 | ||
6f4b1868 | 347 | SR_PRIV int set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate) |
b908f067 | 348 | { |
1644fb24 | 349 | struct dev_context *devc; |
b908f067 UH |
350 | |
351 | /* Note: Caller checked that sdi and sdi->priv != NULL. */ | |
352 | ||
1644fb24 | 353 | devc = sdi->priv; |
b908f067 | 354 | |
f3a35908 | 355 | sr_spew("Trying to set samplerate to %" PRIu64 "Hz.", samplerate); |
b908f067 UH |
356 | |
357 | fill_supported_samplerates_if_needed(); | |
358 | ||
359 | /* Check if this is a samplerate supported by the hardware. */ | |
360 | if (!is_valid_samplerate(samplerate)) | |
361 | return SR_ERR; | |
362 | ||
363 | /* Set the new samplerate. */ | |
1644fb24 | 364 | devc->cur_samplerate = samplerate; |
b908f067 | 365 | |
f3a35908 | 366 | sr_dbg("Samplerate set to %" PRIu64 "Hz.", devc->cur_samplerate); |
b908f067 UH |
367 | |
368 | return SR_OK; | |
369 | } | |
370 | ||
371 | /** | |
372 | * Get a block of data from the LA8. | |
373 | * | |
1644fb24 BV |
374 | * @param devc The struct containing private per-device-instance data. Must not |
375 | * be NULL. devc->ftdic must not be NULL either. | |
b908f067 UH |
376 | * @return SR_OK upon success, or SR_ERR upon errors. |
377 | */ | |
1644fb24 | 378 | SR_PRIV int la8_read_block(struct dev_context *devc) |
b908f067 UH |
379 | { |
380 | int i, byte_offset, m, mi, p, index, bytes_read; | |
381 | time_t now; | |
382 | ||
1644fb24 | 383 | /* Note: Caller checked that devc and devc->ftdic != NULL. */ |
b908f067 | 384 | |
f3a35908 | 385 | sr_spew("Reading block %d.", devc->block_counter); |
b908f067 | 386 | |
1644fb24 | 387 | bytes_read = la8_read(devc, devc->mangled_buf, BS); |
b908f067 UH |
388 | |
389 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
1644fb24 | 390 | if ((bytes_read == 0) && (devc->block_counter == 0)) { |
b908f067 | 391 | do { |
f3a35908 | 392 | sr_spew("Reading block 0 (again)."); |
1644fb24 | 393 | bytes_read = la8_read(devc, devc->mangled_buf, BS); |
b908f067 UH |
394 | /* TODO: How to handle read errors here? */ |
395 | now = time(NULL); | |
1644fb24 | 396 | } while ((devc->done > now) && (bytes_read == 0)); |
b908f067 UH |
397 | } |
398 | ||
399 | /* Check if block read was successful or a timeout occured. */ | |
400 | if (bytes_read != BS) { | |
f3a35908 | 401 | sr_err("Trigger timed out. Bytes read: %d.", bytes_read); |
1644fb24 | 402 | (void) la8_reset(devc); /* Ignore errors. */ |
b908f067 UH |
403 | return SR_ERR; |
404 | } | |
405 | ||
406 | /* De-mangle the data. */ | |
f3a35908 | 407 | sr_spew("Demangling block %d.", devc->block_counter); |
1644fb24 | 408 | byte_offset = devc->block_counter * BS; |
b908f067 UH |
409 | m = byte_offset / (1024 * 1024); |
410 | mi = m * (1024 * 1024); | |
411 | for (i = 0; i < BS; i++) { | |
412 | p = i & (1 << 0); | |
413 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
1644fb24 BV |
414 | index += (devc->divcount == 0) ? p : (1 - p); |
415 | devc->final_buf[index] = devc->mangled_buf[i]; | |
b908f067 UH |
416 | } |
417 | ||
418 | return SR_OK; | |
419 | } | |
420 | ||
1644fb24 | 421 | SR_PRIV void send_block_to_session_bus(struct dev_context *devc, int block) |
b908f067 UH |
422 | { |
423 | int i; | |
424 | uint8_t sample, expected_sample; | |
425 | struct sr_datafeed_packet packet; | |
426 | struct sr_datafeed_logic logic; | |
427 | int trigger_point; /* Relative trigger point (in this block). */ | |
428 | ||
1644fb24 | 429 | /* Note: No sanity checks on devc/block, caller is responsible. */ |
b908f067 UH |
430 | |
431 | /* Check if we can find the trigger condition in this block. */ | |
432 | trigger_point = -1; | |
1644fb24 | 433 | expected_sample = devc->trigger_pattern & devc->trigger_mask; |
b908f067 UH |
434 | for (i = 0; i < BS; i++) { |
435 | /* Don't continue if the trigger was found previously. */ | |
1644fb24 | 436 | if (devc->trigger_found) |
b908f067 UH |
437 | break; |
438 | ||
439 | /* | |
440 | * Also, don't continue if triggers are "don't care", i.e. if | |
441 | * no trigger conditions were specified by the user. In that | |
442 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
443 | */ | |
1644fb24 | 444 | if (devc->trigger_mask == 0x00) |
b908f067 UH |
445 | break; |
446 | ||
1644fb24 | 447 | sample = *(devc->final_buf + (block * BS) + i); |
b908f067 | 448 | |
1644fb24 | 449 | if ((sample & devc->trigger_mask) == expected_sample) { |
b908f067 | 450 | trigger_point = i; |
1644fb24 | 451 | devc->trigger_found = 1; |
b908f067 UH |
452 | break; |
453 | } | |
454 | } | |
455 | ||
456 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
457 | if (trigger_point == -1) { | |
458 | /* Send an SR_DF_LOGIC packet to the session bus. */ | |
f3a35908 UH |
459 | sr_spew("Sending SR_DF_LOGIC packet (%d bytes) for " |
460 | "block %d.", BS, block); | |
b908f067 UH |
461 | packet.type = SR_DF_LOGIC; |
462 | packet.payload = &logic; | |
463 | logic.length = BS; | |
464 | logic.unitsize = 1; | |
1644fb24 | 465 | logic.data = devc->final_buf + (block * BS); |
3e9b7f9c | 466 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
467 | return; |
468 | } | |
469 | ||
470 | /* | |
471 | * We found the trigger, so some special handling is needed. We have | |
472 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
473 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
474 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
475 | */ | |
476 | ||
477 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
478 | ||
479 | /* If at least one sample is located before the trigger... */ | |
480 | if (trigger_point > 0) { | |
481 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
f3a35908 UH |
482 | sr_spew("Sending pre-trigger SR_DF_LOGIC packet, " |
483 | "start = %d, length = %d.", block * BS, trigger_point); | |
b908f067 UH |
484 | packet.type = SR_DF_LOGIC; |
485 | packet.payload = &logic; | |
486 | logic.length = trigger_point; | |
487 | logic.unitsize = 1; | |
1644fb24 | 488 | logic.data = devc->final_buf + (block * BS); |
3e9b7f9c | 489 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
490 | } |
491 | ||
492 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
f3a35908 | 493 | sr_spew("Sending SR_DF_TRIGGER packet, sample = %d.", |
b908f067 UH |
494 | (block * BS) + trigger_point); |
495 | packet.type = SR_DF_TRIGGER; | |
496 | packet.payload = NULL; | |
3e9b7f9c | 497 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
498 | |
499 | /* If at least one sample is located after the trigger... */ | |
500 | if (trigger_point < (BS - 1)) { | |
501 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ | |
f3a35908 UH |
502 | sr_spew("Sending post-trigger SR_DF_LOGIC packet, " |
503 | "start = %d, length = %d.", | |
b908f067 UH |
504 | (block * BS) + trigger_point, BS - trigger_point); |
505 | packet.type = SR_DF_LOGIC; | |
506 | packet.payload = &logic; | |
507 | logic.length = BS - trigger_point; | |
508 | logic.unitsize = 1; | |
1644fb24 | 509 | logic.data = devc->final_buf + (block * BS) + trigger_point; |
3e9b7f9c | 510 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
511 | } |
512 | } |