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b908f067 | 1 | /* |
50985c20 | 2 | * This file is part of the libsigrok project. |
b908f067 | 3 | * |
b172c130 | 4 | * Copyright (C) 2011-2014 Uwe Hermann <uwe@hermann-uwe.de> |
b908f067 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 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 | ||
45e080b6 | 21 | #include "protocol.h" |
b908f067 | 22 | |
fca75cbb | 23 | /* Channels are numbered 0-7. */ |
b172c130 | 24 | SR_PRIV const char *cv_channel_names[NUM_CHANNELS + 1] = { |
78693401 | 25 | "0", "1", "2", "3", "4", "5", "6", "7", |
b908f067 UH |
26 | NULL, |
27 | }; | |
28 | ||
b172c130 | 29 | SR_PRIV void cv_fill_samplerates_if_needed(void) |
b908f067 UH |
30 | { |
31 | int i; | |
32 | ||
b172c130 | 33 | if (cv_samplerates[0] != 0) |
b908f067 UH |
34 | return; |
35 | ||
b908f067 | 36 | for (i = 0; i < 255; i++) |
b172c130 | 37 | cv_samplerates[254 - i] = SR_MHZ(100) / (i + 1); |
b908f067 UH |
38 | } |
39 | ||
40 | /** | |
b172c130 | 41 | * Check if the given samplerate is supported by the hardware. |
b908f067 UH |
42 | * |
43 | * @param samplerate The samplerate (in Hz) to check. | |
44 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
45 | */ | |
b172c130 | 46 | static int is_valid_samplerate(uint64_t samplerate) |
b908f067 UH |
47 | { |
48 | int i; | |
49 | ||
b172c130 | 50 | cv_fill_samplerates_if_needed(); |
b908f067 UH |
51 | |
52 | for (i = 0; i < 255; i++) { | |
b172c130 | 53 | if (cv_samplerates[i] == samplerate) |
b908f067 UH |
54 | return 1; |
55 | } | |
56 | ||
f3a35908 | 57 | sr_err("Invalid samplerate (%" PRIu64 "Hz).", samplerate); |
b908f067 UH |
58 | |
59 | return 0; | |
60 | } | |
61 | ||
62 | /** | |
b172c130 | 63 | * Convert a samplerate (in Hz) to the 'divcount' value the device wants. |
b908f067 UH |
64 | * |
65 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
66 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
67 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
68 | * | |
69 | * @param samplerate The samplerate in Hz. | |
70 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
71 | */ | |
b172c130 | 72 | SR_PRIV uint8_t cv_samplerate_to_divcount(uint64_t samplerate) |
b908f067 UH |
73 | { |
74 | if (samplerate == 0) { | |
b172c130 | 75 | sr_err("Can't convert invalid samplerate of 0 Hz."); |
b908f067 UH |
76 | return 0xff; |
77 | } | |
78 | ||
79 | if (!is_valid_samplerate(samplerate)) { | |
b172c130 | 80 | sr_err("Can't get divcount, samplerate invalid."); |
b908f067 UH |
81 | return 0xff; |
82 | } | |
83 | ||
84 | return (SR_MHZ(100) / samplerate) - 1; | |
85 | } | |
86 | ||
87 | /** | |
b172c130 | 88 | * Write data of a certain length to the FTDI device. |
b908f067 | 89 | * |
1644fb24 | 90 | * @param devc The struct containing private per-device-instance data. Must not |
b172c130 | 91 | * be NULL. devc->ftdic must not be NULL either. |
b908f067 | 92 | * @param buf The buffer containing the data to write. Must not be NULL. |
b172c130 UH |
93 | * @param size The number of bytes to write. Must be > 0. |
94 | * | |
b908f067 UH |
95 | * @return The number of bytes written, or a negative value upon errors. |
96 | */ | |
b172c130 | 97 | SR_PRIV int cv_write(struct dev_context *devc, uint8_t *buf, int size) |
b908f067 UH |
98 | { |
99 | int bytes_written; | |
100 | ||
b172c130 | 101 | /* Note: Caller ensures devc/devc->ftdic/buf != NULL and size > 0. */ |
b908f067 | 102 | |
b172c130 | 103 | if (!buf) |
b908f067 | 104 | return SR_ERR_ARG; |
b908f067 | 105 | |
b172c130 | 106 | if (size < 0) |
b908f067 | 107 | return SR_ERR_ARG; |
b908f067 | 108 | |
1644fb24 | 109 | bytes_written = ftdi_write_data(devc->ftdic, buf, size); |
b908f067 UH |
110 | |
111 | if (bytes_written < 0) { | |
b172c130 | 112 | sr_err("Failed to write data (%d): %s.", |
1644fb24 | 113 | bytes_written, ftdi_get_error_string(devc->ftdic)); |
b172c130 | 114 | (void) cv_close_usb_reset_sequencer(devc); /* Ignore errors. */ |
b908f067 | 115 | } else if (bytes_written != size) { |
b172c130 UH |
116 | sr_err("Failed to write data, only %d/%d bytes written.", |
117 | size, bytes_written); | |
118 | (void) cv_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 UH |
119 | } |
120 | ||
121 | return bytes_written; | |
122 | } | |
123 | ||
124 | /** | |
b172c130 | 125 | * Read a certain amount of bytes from the FTDI device. |
b908f067 | 126 | * |
1644fb24 | 127 | * @param devc The struct containing private per-device-instance data. Must not |
b172c130 | 128 | * be NULL. devc->ftdic must not be NULL either. |
b908f067 UH |
129 | * @param buf The buffer where the received data will be stored. Must not |
130 | * be NULL. | |
131 | * @param size The number of bytes to read. Must be >= 1. | |
b172c130 | 132 | * |
b908f067 UH |
133 | * @return The number of bytes read, or a negative value upon errors. |
134 | */ | |
b172c130 | 135 | static int cv_read(struct dev_context *devc, uint8_t *buf, int size) |
b908f067 UH |
136 | { |
137 | int bytes_read; | |
138 | ||
b172c130 | 139 | /* Note: Caller ensures devc/devc->ftdic/buf != NULL and size > 0. */ |
b908f067 | 140 | |
1644fb24 | 141 | bytes_read = ftdi_read_data(devc->ftdic, buf, size); |
b908f067 UH |
142 | |
143 | if (bytes_read < 0) { | |
b172c130 | 144 | sr_err("Failed to read data (%d): %s.", |
1644fb24 | 145 | bytes_read, ftdi_get_error_string(devc->ftdic)); |
b908f067 | 146 | } else if (bytes_read != size) { |
b172c130 UH |
147 | // sr_err("Failed to read data, only %d/%d bytes read.", |
148 | // bytes_read, size); | |
b908f067 UH |
149 | } |
150 | ||
151 | return bytes_read; | |
152 | } | |
153 | ||
b172c130 | 154 | SR_PRIV int cv_close(struct dev_context *devc) |
b908f067 UH |
155 | { |
156 | int ret; | |
157 | ||
1644fb24 | 158 | if (!devc) { |
f3a35908 | 159 | sr_err("%s: devc was NULL.", __func__); |
b908f067 UH |
160 | return SR_ERR_ARG; |
161 | } | |
162 | ||
1644fb24 | 163 | if (!devc->ftdic) { |
f3a35908 | 164 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
165 | return SR_ERR_ARG; |
166 | } | |
167 | ||
1644fb24 | 168 | if ((ret = ftdi_usb_close(devc->ftdic)) < 0) { |
f3a35908 | 169 | sr_err("%s: ftdi_usb_close: (%d) %s.", |
1644fb24 | 170 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
b908f067 UH |
171 | } |
172 | ||
173 | return ret; | |
174 | } | |
175 | ||
176 | /** | |
b172c130 | 177 | * Close the USB port and reset the sequencer logic. |
b908f067 | 178 | * |
1644fb24 | 179 | * @param devc The struct containing private per-device-instance data. |
b908f067 UH |
180 | * @return SR_OK upon success, SR_ERR_ARG upon invalid arguments. |
181 | */ | |
b172c130 | 182 | SR_PRIV int cv_close_usb_reset_sequencer(struct dev_context *devc) |
b908f067 | 183 | { |
b172c130 | 184 | /* Magic sequence of bytes for resetting the sequencer logic. */ |
b908f067 UH |
185 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; |
186 | int ret; | |
187 | ||
b172c130 | 188 | if (!devc) |
b908f067 | 189 | return SR_ERR_ARG; |
b908f067 | 190 | |
1644fb24 | 191 | if (!devc->ftdic) { |
b172c130 | 192 | sr_err("devc->ftdic was NULL."); |
b908f067 UH |
193 | return SR_ERR_ARG; |
194 | } | |
195 | ||
1644fb24 | 196 | if (devc->ftdic->usb_dev) { |
b172c130 | 197 | /* Reset the sequencer logic, then wait 100ms. */ |
f3a35908 | 198 | sr_dbg("Resetting sequencer logic."); |
b172c130 | 199 | (void) cv_write(devc, buf, 8); /* Ignore errors. */ |
b908f067 UH |
200 | g_usleep(100 * 1000); |
201 | ||
202 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
f3a35908 | 203 | sr_dbg("Purging buffers, resetting+closing FTDI device."); |
b908f067 UH |
204 | |
205 | /* Log errors, but ignore them (i.e., don't abort). */ | |
1644fb24 | 206 | if ((ret = ftdi_usb_purge_buffers(devc->ftdic)) < 0) |
f3a35908 | 207 | sr_err("%s: ftdi_usb_purge_buffers: (%d) %s.", |
1644fb24 BV |
208 | __func__, ret, ftdi_get_error_string(devc->ftdic)); |
209 | if ((ret = ftdi_usb_reset(devc->ftdic)) < 0) | |
f3a35908 | 210 | sr_err("%s: ftdi_usb_reset: (%d) %s.", __func__, |
1644fb24 BV |
211 | ret, ftdi_get_error_string(devc->ftdic)); |
212 | if ((ret = ftdi_usb_close(devc->ftdic)) < 0) | |
f3a35908 | 213 | sr_err("%s: ftdi_usb_close: (%d) %s.", __func__, |
1644fb24 | 214 | ret, ftdi_get_error_string(devc->ftdic)); |
b908f067 UH |
215 | } |
216 | ||
217 | /* Close USB device, deinitialize and free the FTDI context. */ | |
1644fb24 BV |
218 | ftdi_free(devc->ftdic); /* Returns void. */ |
219 | devc->ftdic = NULL; | |
b908f067 UH |
220 | |
221 | return SR_OK; | |
222 | } | |
223 | ||
224 | /** | |
b172c130 | 225 | * Reset the ChronoVu device. |
b908f067 | 226 | * |
b172c130 | 227 | * A reset is required after a failed read/write operation or upon timeouts. |
b908f067 | 228 | * |
1644fb24 | 229 | * @param devc The struct containing private per-device-instance data. |
b908f067 UH |
230 | * @return SR_OK upon success, SR_ERR upon failure. |
231 | */ | |
b172c130 | 232 | static int cv_reset(struct dev_context *devc) |
b908f067 UH |
233 | { |
234 | uint8_t buf[BS]; | |
235 | time_t done, now; | |
236 | int bytes_read; | |
237 | ||
1644fb24 | 238 | if (!devc) { |
f3a35908 | 239 | sr_err("%s: devc was NULL.", __func__); |
b908f067 UH |
240 | return SR_ERR_ARG; |
241 | } | |
242 | ||
1644fb24 | 243 | if (!devc->ftdic) { |
f3a35908 | 244 | sr_err("%s: devc->ftdic was NULL.", __func__); |
b908f067 UH |
245 | return SR_ERR_ARG; |
246 | } | |
247 | ||
f3a35908 | 248 | sr_dbg("Resetting the device."); |
b908f067 UH |
249 | |
250 | /* | |
251 | * Purge pending read data from the FTDI hardware FIFO until | |
252 | * no more data is left, or a timeout occurs (after 20s). | |
253 | */ | |
254 | done = 20 + time(NULL); | |
255 | do { | |
b172c130 UH |
256 | /* Try to read bytes until none are left (or errors occur). */ |
257 | bytes_read = cv_read(devc, (uint8_t *)&buf, BS); | |
b908f067 UH |
258 | now = time(NULL); |
259 | } while ((done > now) && (bytes_read > 0)); | |
260 | ||
b172c130 UH |
261 | /* Reset the sequencer logic and close the USB port. */ |
262 | (void) cv_close_usb_reset_sequencer(devc); /* Ignore errors. */ | |
b908f067 | 263 | |
f3a35908 | 264 | sr_dbg("Device reset finished."); |
b908f067 UH |
265 | |
266 | return SR_OK; | |
267 | } | |
268 | ||
b172c130 | 269 | SR_PRIV int cv_configure_channels(const struct sr_dev_inst *sdi) |
b908f067 | 270 | { |
014359e3 | 271 | struct dev_context *devc; |
ba7dd8bb | 272 | const struct sr_channel *ch; |
b908f067 | 273 | const GSList *l; |
ba7dd8bb | 274 | uint8_t channel_bit; |
b908f067 UH |
275 | char *tc; |
276 | ||
014359e3 | 277 | devc = sdi->priv; |
1644fb24 | 278 | devc->trigger_pattern = 0; |
ba7dd8bb | 279 | devc->trigger_mask = 0; /* Default to "don't care" for all channels. */ |
b908f067 | 280 | |
ba7dd8bb UH |
281 | for (l = sdi->channels; l; l = l->next) { |
282 | ch = (struct sr_channel *)l->data; | |
b908f067 | 283 | |
ba7dd8bb UH |
284 | if (!ch) { |
285 | sr_err("%s: channel was NULL.", __func__); | |
b908f067 UH |
286 | return SR_ERR; |
287 | } | |
288 | ||
ba7dd8bb UH |
289 | /* Skip disabled channels. */ |
290 | if (!ch->enabled) | |
b908f067 UH |
291 | continue; |
292 | ||
ba7dd8bb UH |
293 | /* Skip (enabled) channels with no configured trigger. */ |
294 | if (!ch->trigger) | |
b908f067 UH |
295 | continue; |
296 | ||
ba7dd8bb UH |
297 | /* Note: Must only be run if ch->trigger != NULL. */ |
298 | if (ch->index < 0 || ch->index > 7) { | |
299 | sr_err("%s: Invalid channel index %d, must be " | |
300 | "between 0 and 7.", __func__, ch->index); | |
b908f067 UH |
301 | return SR_ERR; |
302 | } | |
303 | ||
ba7dd8bb | 304 | channel_bit = (1 << (ch->index)); |
b908f067 | 305 | |
ba7dd8bb UH |
306 | /* Configure the channel's trigger mask and trigger pattern. */ |
307 | for (tc = ch->trigger; tc && *tc; tc++) { | |
308 | devc->trigger_mask |= channel_bit; | |
b908f067 UH |
309 | |
310 | /* Sanity check, LA8 only supports low/high trigger. */ | |
311 | if (*tc != '0' && *tc != '1') { | |
f3a35908 UH |
312 | sr_err("%s: Invalid trigger '%c', only " |
313 | "'0'/'1' supported.", __func__, *tc); | |
b908f067 UH |
314 | return SR_ERR; |
315 | } | |
316 | ||
317 | if (*tc == '1') | |
ba7dd8bb | 318 | devc->trigger_pattern |= channel_bit; |
b908f067 UH |
319 | } |
320 | } | |
321 | ||
f3a35908 | 322 | sr_dbg("Trigger mask = 0x%x, trigger pattern = 0x%x.", |
1644fb24 | 323 | devc->trigger_mask, devc->trigger_pattern); |
b908f067 UH |
324 | |
325 | return SR_OK; | |
326 | } | |
327 | ||
b172c130 | 328 | SR_PRIV int cv_set_samplerate(const struct sr_dev_inst *sdi, uint64_t samplerate) |
b908f067 | 329 | { |
1644fb24 | 330 | struct dev_context *devc; |
b908f067 UH |
331 | |
332 | /* Note: Caller checked that sdi and sdi->priv != NULL. */ | |
333 | ||
1644fb24 | 334 | devc = sdi->priv; |
b908f067 | 335 | |
f3a35908 | 336 | sr_spew("Trying to set samplerate to %" PRIu64 "Hz.", samplerate); |
b908f067 | 337 | |
b172c130 | 338 | cv_fill_samplerates_if_needed(); |
b908f067 UH |
339 | |
340 | /* Check if this is a samplerate supported by the hardware. */ | |
b172c130 UH |
341 | if (!is_valid_samplerate(samplerate)) { |
342 | sr_dbg("Failed to set invalid samplerate (%" PRIu64 "Hz).", | |
343 | samplerate); | |
b908f067 | 344 | return SR_ERR; |
b172c130 | 345 | } |
b908f067 UH |
346 | |
347 | /* Set the new samplerate. */ | |
1644fb24 | 348 | devc->cur_samplerate = samplerate; |
b908f067 | 349 | |
f3a35908 | 350 | sr_dbg("Samplerate set to %" PRIu64 "Hz.", devc->cur_samplerate); |
b908f067 UH |
351 | |
352 | return SR_OK; | |
353 | } | |
354 | ||
355 | /** | |
b172c130 | 356 | * Get a block of data from the device. |
b908f067 | 357 | * |
1644fb24 | 358 | * @param devc The struct containing private per-device-instance data. Must not |
b172c130 UH |
359 | * be NULL. devc->ftdic must not be NULL either. |
360 | * | |
b908f067 UH |
361 | * @return SR_OK upon success, or SR_ERR upon errors. |
362 | */ | |
b172c130 | 363 | SR_PRIV int cv_read_block(struct dev_context *devc) |
b908f067 UH |
364 | { |
365 | int i, byte_offset, m, mi, p, index, bytes_read; | |
366 | time_t now; | |
367 | ||
1644fb24 | 368 | /* Note: Caller checked that devc and devc->ftdic != NULL. */ |
b908f067 | 369 | |
f3a35908 | 370 | sr_spew("Reading block %d.", devc->block_counter); |
b908f067 | 371 | |
b172c130 | 372 | bytes_read = cv_read(devc, devc->mangled_buf, BS); |
b908f067 UH |
373 | |
374 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
1644fb24 | 375 | if ((bytes_read == 0) && (devc->block_counter == 0)) { |
b908f067 | 376 | do { |
f3a35908 | 377 | sr_spew("Reading block 0 (again)."); |
b172c130 | 378 | bytes_read = cv_read(devc, devc->mangled_buf, BS); |
b908f067 UH |
379 | /* TODO: How to handle read errors here? */ |
380 | now = time(NULL); | |
1644fb24 | 381 | } while ((devc->done > now) && (bytes_read == 0)); |
b908f067 UH |
382 | } |
383 | ||
384 | /* Check if block read was successful or a timeout occured. */ | |
385 | if (bytes_read != BS) { | |
f3a35908 | 386 | sr_err("Trigger timed out. Bytes read: %d.", bytes_read); |
b172c130 | 387 | (void) cv_reset(devc); /* Ignore errors. */ |
b908f067 UH |
388 | return SR_ERR; |
389 | } | |
390 | ||
391 | /* De-mangle the data. */ | |
f3a35908 | 392 | sr_spew("Demangling block %d.", devc->block_counter); |
1644fb24 | 393 | byte_offset = devc->block_counter * BS; |
b908f067 UH |
394 | m = byte_offset / (1024 * 1024); |
395 | mi = m * (1024 * 1024); | |
396 | for (i = 0; i < BS; i++) { | |
397 | p = i & (1 << 0); | |
398 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
1644fb24 BV |
399 | index += (devc->divcount == 0) ? p : (1 - p); |
400 | devc->final_buf[index] = devc->mangled_buf[i]; | |
b908f067 UH |
401 | } |
402 | ||
403 | return SR_OK; | |
404 | } | |
405 | ||
b172c130 | 406 | SR_PRIV void cv_send_block_to_session_bus(struct dev_context *devc, int block) |
b908f067 UH |
407 | { |
408 | int i; | |
409 | uint8_t sample, expected_sample; | |
410 | struct sr_datafeed_packet packet; | |
411 | struct sr_datafeed_logic logic; | |
412 | int trigger_point; /* Relative trigger point (in this block). */ | |
413 | ||
1644fb24 | 414 | /* Note: No sanity checks on devc/block, caller is responsible. */ |
b908f067 UH |
415 | |
416 | /* Check if we can find the trigger condition in this block. */ | |
417 | trigger_point = -1; | |
1644fb24 | 418 | expected_sample = devc->trigger_pattern & devc->trigger_mask; |
b908f067 UH |
419 | for (i = 0; i < BS; i++) { |
420 | /* Don't continue if the trigger was found previously. */ | |
1644fb24 | 421 | if (devc->trigger_found) |
b908f067 UH |
422 | break; |
423 | ||
424 | /* | |
425 | * Also, don't continue if triggers are "don't care", i.e. if | |
426 | * no trigger conditions were specified by the user. In that | |
427 | * case we don't want to send an SR_DF_TRIGGER packet at all. | |
428 | */ | |
1644fb24 | 429 | if (devc->trigger_mask == 0x00) |
b908f067 UH |
430 | break; |
431 | ||
1644fb24 | 432 | sample = *(devc->final_buf + (block * BS) + i); |
b908f067 | 433 | |
1644fb24 | 434 | if ((sample & devc->trigger_mask) == expected_sample) { |
b908f067 | 435 | trigger_point = i; |
1644fb24 | 436 | devc->trigger_found = 1; |
b908f067 UH |
437 | break; |
438 | } | |
439 | } | |
440 | ||
441 | /* If no trigger was found, send one SR_DF_LOGIC packet. */ | |
442 | if (trigger_point == -1) { | |
443 | /* Send an SR_DF_LOGIC packet to the session bus. */ | |
f3a35908 UH |
444 | sr_spew("Sending SR_DF_LOGIC packet (%d bytes) for " |
445 | "block %d.", BS, block); | |
b908f067 UH |
446 | packet.type = SR_DF_LOGIC; |
447 | packet.payload = &logic; | |
448 | logic.length = BS; | |
449 | logic.unitsize = 1; | |
1644fb24 | 450 | logic.data = devc->final_buf + (block * BS); |
3e9b7f9c | 451 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
452 | return; |
453 | } | |
454 | ||
455 | /* | |
456 | * We found the trigger, so some special handling is needed. We have | |
457 | * to send an SR_DF_LOGIC packet with the samples before the trigger | |
458 | * (if any), then the SD_DF_TRIGGER packet itself, then another | |
459 | * SR_DF_LOGIC packet with the samples after the trigger (if any). | |
460 | */ | |
461 | ||
462 | /* TODO: Send SR_DF_TRIGGER packet before or after the actual sample? */ | |
463 | ||
464 | /* If at least one sample is located before the trigger... */ | |
465 | if (trigger_point > 0) { | |
466 | /* Send pre-trigger SR_DF_LOGIC packet to the session bus. */ | |
f3a35908 UH |
467 | sr_spew("Sending pre-trigger SR_DF_LOGIC packet, " |
468 | "start = %d, length = %d.", block * BS, trigger_point); | |
b908f067 UH |
469 | packet.type = SR_DF_LOGIC; |
470 | packet.payload = &logic; | |
471 | logic.length = trigger_point; | |
472 | logic.unitsize = 1; | |
1644fb24 | 473 | logic.data = devc->final_buf + (block * BS); |
3e9b7f9c | 474 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
475 | } |
476 | ||
477 | /* Send the SR_DF_TRIGGER packet to the session bus. */ | |
f3a35908 | 478 | sr_spew("Sending SR_DF_TRIGGER packet, sample = %d.", |
b908f067 UH |
479 | (block * BS) + trigger_point); |
480 | packet.type = SR_DF_TRIGGER; | |
481 | packet.payload = NULL; | |
3e9b7f9c | 482 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
483 | |
484 | /* If at least one sample is located after the trigger... */ | |
485 | if (trigger_point < (BS - 1)) { | |
486 | /* Send post-trigger SR_DF_LOGIC packet to the session bus. */ | |
f3a35908 UH |
487 | sr_spew("Sending post-trigger SR_DF_LOGIC packet, " |
488 | "start = %d, length = %d.", | |
b908f067 UH |
489 | (block * BS) + trigger_point, BS - trigger_point); |
490 | packet.type = SR_DF_LOGIC; | |
491 | packet.payload = &logic; | |
492 | logic.length = BS - trigger_point; | |
493 | logic.unitsize = 1; | |
1644fb24 | 494 | logic.data = devc->final_buf + (block * BS) + trigger_point; |
3e9b7f9c | 495 | sr_session_send(devc->cb_data, &packet); |
b908f067 UH |
496 | } |
497 | } |