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f4314d7e UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2011 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> | |
ecaf59db | 22 | #include <glib.h> |
f4314d7e | 23 | #include <sigrok.h> |
b08024a8 | 24 | #include <sigrok-internal.h> |
f4314d7e UH |
25 | |
26 | #define USB_VENDOR_ID 0x0403 | |
27 | #define USB_PRODUCT_ID 0x6001 | |
28 | #define USB_DESCRIPTION "ChronoVu LA8" | |
29 | #define USB_VENDOR_NAME "ChronoVu" | |
30 | #define USB_MODEL_NAME "LA8" | |
31 | #define USB_MODEL_VERSION "" | |
32 | ||
33 | #define NUM_PROBES 8 | |
34 | #define TRIGGER_TYPES "01" | |
35 | #define SDRAM_SIZE (8 * 1024 * 1024) | |
36 | #define MIN_NUM_SAMPLES 1 | |
37 | ||
38 | static GSList *device_instances = NULL; | |
39 | ||
40 | struct la8 { | |
41 | /** FTDI device context (used by libftdi). */ | |
42 | struct ftdi_context *ftdic; | |
43 | ||
44 | /** The currently configured samplerate of the device. */ | |
45 | uint64_t cur_samplerate; | |
46 | ||
47 | /** The current sampling limit (in ms). */ | |
48 | uint64_t limit_msec; | |
49 | ||
50 | /** The current sampling limit (in number of samples). */ | |
51 | uint64_t limit_samples; | |
52 | ||
53 | /** The number of probes. */ | |
54 | int num_probes; | |
55 | ||
56 | /** TODO */ | |
57 | gpointer session_id; | |
58 | ||
59 | /** | |
60 | * An 8MB buffer containing the (mangled) samples from the device. | |
61 | * Format: Pretty mangled-up (due to hardware reasons), see code. | |
62 | */ | |
63 | uint8_t *mangled_buf; | |
64 | ||
65 | /** | |
66 | * An 8MB buffer where we'll store the de-mangled samples. | |
67 | * Format: Each sample is 1 byte, MSB is channel 7, LSB is channel 0. | |
68 | */ | |
69 | uint8_t *final_buf; | |
70 | ||
71 | /** | |
72 | * Trigger pattern (MSB = channel 7, LSB = channel 0). | |
73 | * A 1 bit matches a high signal, 0 matches a low signal on a probe. | |
74 | * Only low/high triggers (but not e.g. rising/falling) are supported. | |
75 | */ | |
76 | uint8_t trigger_pattern; | |
77 | ||
78 | /** | |
79 | * Trigger mask (MSB = channel 7, LSB = channel 0). | |
80 | * A 1 bit means "must match trigger_pattern", 0 means "don't care". | |
81 | */ | |
82 | uint8_t trigger_mask; | |
83 | ||
84 | /** Time (in seconds) before the trigger times out. */ | |
85 | uint64_t trigger_timeout; | |
86 | ||
87 | /** TODO */ | |
88 | time_t done; | |
89 | ||
90 | /** Counter/index for the data block (0..2047) to be read. */ | |
91 | int block_counter; | |
92 | ||
93 | /** The divcount value (determines the sample period) for the LA8. */ | |
94 | uint8_t divcount; | |
95 | }; | |
96 | ||
97 | /* This will be initialized via hw_get_device_info()/SR_DI_SAMPLERATES. */ | |
98 | static uint64_t supported_samplerates[255 + 1] = { 0 }; | |
99 | ||
100 | /* | |
101 | * Min: 1 sample per 0.01us -> sample time is 0.084s, samplerate 100MHz | |
102 | * Max: 1 sample per 2.55us -> sample time is 21.391s, samplerate 392.15kHz | |
103 | */ | |
104 | static struct sr_samplerates samplerates = { | |
105 | .low = 0, | |
106 | .high = 0, | |
107 | .step = 0, | |
108 | .list = supported_samplerates, | |
109 | }; | |
110 | ||
111 | /* Note: Continuous sampling is not supported by the hardware. */ | |
112 | static int capabilities[] = { | |
113 | SR_HWCAP_LOGIC_ANALYZER, | |
114 | SR_HWCAP_SAMPLERATE, | |
115 | SR_HWCAP_LIMIT_MSEC, /* TODO: Not yet implemented. */ | |
116 | SR_HWCAP_LIMIT_SAMPLES, /* TODO: Not yet implemented. */ | |
117 | 0, | |
118 | }; | |
119 | ||
120 | /* Function prototypes. */ | |
121 | static int la8_close_usb_reset_sequencer(struct la8 *la8); | |
122 | static void hw_stop_acquisition(int device_index, gpointer session_device_id); | |
123 | static int la8_reset(struct la8 *la8); | |
124 | ||
125 | static void fill_supported_samplerates_if_needed(void) | |
126 | { | |
127 | int i; | |
128 | ||
129 | /* Do nothing if supported_samplerates[] is already filled. */ | |
130 | if (supported_samplerates[0] != 0) | |
131 | return; | |
132 | ||
133 | /* Fill supported_samplerates[] with the proper values. */ | |
134 | for (i = 0; i < 255; i++) | |
135 | supported_samplerates[254 - i] = SR_MHZ(100) / (i + 1); | |
136 | supported_samplerates[255] = 0; | |
137 | } | |
138 | ||
139 | /** | |
140 | * Check if the given samplerate is supported by the LA8 hardware. | |
141 | * | |
142 | * @param samplerate The samplerate (in Hz) to check. | |
143 | * @return 1 if the samplerate is supported/valid, 0 otherwise. | |
144 | */ | |
145 | static int is_valid_samplerate(uint64_t samplerate) | |
146 | { | |
147 | int i; | |
148 | ||
149 | fill_supported_samplerates_if_needed(); | |
150 | ||
151 | for (i = 0; i < 255; i++) { | |
152 | if (supported_samplerates[i] == samplerate) | |
153 | return 1; | |
154 | } | |
155 | ||
b08024a8 UH |
156 | sr_warn("la8: %s: invalid samplerate (%" PRIu64 "Hz)", |
157 | __func__, samplerate); | |
f4314d7e UH |
158 | |
159 | return 0; | |
160 | } | |
161 | ||
162 | /** | |
163 | * Convert a samplerate (in Hz) to the 'divcount' value the LA8 wants. | |
164 | * | |
165 | * LA8 hardware: sample period = (divcount + 1) * 10ns. | |
166 | * Min. value for divcount: 0x00 (10ns sample period, 100MHz samplerate). | |
167 | * Max. value for divcount: 0xfe (2550ns sample period, 392.15kHz samplerate). | |
168 | * | |
169 | * @param samplerate The samplerate in Hz. | |
170 | * @return The divcount value as needed by the hardware, or 0xff upon errors. | |
171 | */ | |
172 | static uint8_t samplerate_to_divcount(uint64_t samplerate) | |
173 | { | |
174 | if (samplerate == 0) { | |
b08024a8 | 175 | sr_warn("la8: %s: samplerate was 0", __func__); |
f4314d7e UH |
176 | return 0xff; |
177 | } | |
178 | ||
179 | if (!is_valid_samplerate(samplerate)) { | |
b08024a8 UH |
180 | sr_warn("la8: %s: can't get divcount, samplerate invalid", |
181 | __func__); | |
f4314d7e UH |
182 | return 0xff; |
183 | } | |
184 | ||
185 | return (SR_MHZ(100) / samplerate) - 1; | |
186 | } | |
187 | ||
188 | /** | |
189 | * Write data of a certain length to the LA8's FTDI device. | |
190 | * | |
191 | * @param la8 The LA8 struct containing private per-device-instance data. | |
192 | * @param buf The buffer containing the data to write. | |
193 | * @param size The number of bytes to write. | |
194 | * @return The number of bytes written, or a negative value upon errors. | |
195 | */ | |
196 | static int la8_write(struct la8 *la8, uint8_t *buf, int size) | |
197 | { | |
198 | int bytes_written; | |
199 | ||
200 | if (!la8) { | |
b08024a8 | 201 | sr_warn("la8: %s: la8 was NULL", __func__); |
8703f512 | 202 | return SR_ERR_ARG; |
f4314d7e UH |
203 | } |
204 | ||
205 | if (!la8->ftdic) { | |
b08024a8 | 206 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 207 | return SR_ERR_ARG; |
f4314d7e UH |
208 | } |
209 | ||
210 | if (!buf) { | |
b08024a8 | 211 | sr_warn("la8: %s: buf was NULL", __func__); |
8703f512 | 212 | return SR_ERR_ARG; |
f4314d7e UH |
213 | } |
214 | ||
215 | if (size < 0) { | |
b08024a8 | 216 | sr_warn("la8: %s: size was < 0", __func__); |
8703f512 | 217 | return SR_ERR_ARG; |
f4314d7e UH |
218 | } |
219 | ||
220 | bytes_written = ftdi_write_data(la8->ftdic, buf, size); | |
221 | ||
222 | if (bytes_written < 0) { | |
b08024a8 UH |
223 | sr_warn("la8: %s: ftdi_write_data: (%d) %s", __func__, |
224 | bytes_written, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
225 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
226 | } else if (bytes_written != size) { | |
b08024a8 UH |
227 | sr_warn("la8: %s: bytes to write: %d, bytes written: %d", |
228 | __func__, size, bytes_written); | |
f4314d7e UH |
229 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
230 | } | |
231 | ||
232 | return bytes_written; | |
233 | } | |
234 | ||
235 | /** | |
236 | * Read a certain amount of bytes from the LA8's FTDI device. | |
237 | * | |
238 | * @param la8 The LA8 struct containing private per-device-instance data. | |
239 | * @param buf The buffer where the received data will be stored. | |
240 | * @param size The number of bytes to read. | |
241 | * @return The number of bytes read, or a negative value upon errors. | |
242 | */ | |
243 | static int la8_read(struct la8 *la8, uint8_t *buf, int size) | |
244 | { | |
245 | int bytes_read; | |
246 | ||
247 | if (!la8) { | |
b08024a8 | 248 | sr_warn("la8: %s: la8 was NULL", __func__); |
8703f512 | 249 | return SR_ERR_ARG; |
f4314d7e UH |
250 | } |
251 | ||
252 | if (!la8->ftdic) { | |
b08024a8 | 253 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 254 | return SR_ERR_ARG; |
f4314d7e UH |
255 | } |
256 | ||
257 | if (!buf) { | |
b08024a8 | 258 | sr_warn("la8: %s: buf was NULL", __func__); |
8703f512 | 259 | return SR_ERR_ARG; |
f4314d7e UH |
260 | } |
261 | ||
262 | if (size <= 0) { | |
b08024a8 | 263 | sr_warn("la8: %s: size was <= 0", __func__); |
8703f512 | 264 | return SR_ERR_ARG; |
f4314d7e UH |
265 | } |
266 | ||
267 | bytes_read = ftdi_read_data(la8->ftdic, buf, size); | |
268 | ||
269 | if (bytes_read < 0) { | |
b08024a8 UH |
270 | sr_warn("la8: %s: ftdi_read_data: (%d) %s", __func__, |
271 | bytes_read, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 272 | } else if (bytes_read != size) { |
b08024a8 UH |
273 | // sr_warn("la8: %s: bytes to read: %d, bytes read: %d", |
274 | // __func__, size, bytes_read); | |
f4314d7e UH |
275 | } |
276 | ||
277 | return bytes_read; | |
278 | } | |
279 | ||
280 | static int la8_close(struct la8 *la8) | |
281 | { | |
282 | int ret; | |
283 | ||
284 | if (!la8) { | |
b08024a8 | 285 | sr_warn("la8: %s: la8 was NULL", __func__); |
8703f512 | 286 | return SR_ERR_ARG; |
f4314d7e UH |
287 | } |
288 | ||
289 | if (!la8->ftdic) { | |
b08024a8 | 290 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 291 | return SR_ERR_ARG; |
f4314d7e UH |
292 | } |
293 | ||
294 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) { | |
b08024a8 UH |
295 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", |
296 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
297 | } |
298 | ||
299 | return ret; | |
300 | } | |
301 | ||
302 | /** | |
303 | * Close the ChronoVu LA8 USB port and reset the LA8 sequencer logic. | |
304 | * | |
305 | * @param la8 The LA8 struct containing private per-device-instance data. | |
306 | * @return SR_OK upon success, SR_ERR upon failure. | |
307 | */ | |
308 | static int la8_close_usb_reset_sequencer(struct la8 *la8) | |
309 | { | |
310 | /* Magic sequence of bytes for resetting the LA8 sequencer logic. */ | |
311 | uint8_t buf[8] = {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01}; | |
312 | int ret; | |
313 | ||
b08024a8 | 314 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
315 | |
316 | if (!la8) { | |
b08024a8 | 317 | sr_warn("la8: %s: la8 was NULL", __func__); |
8703f512 | 318 | return SR_ERR_ARG; |
f4314d7e UH |
319 | } |
320 | ||
321 | if (!la8->ftdic) { | |
b08024a8 | 322 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 323 | return SR_ERR_ARG; |
f4314d7e UH |
324 | } |
325 | ||
326 | if (la8->ftdic->usb_dev) { | |
327 | /* Reset the LA8 sequencer logic, then wait 100ms. */ | |
b08024a8 | 328 | sr_dbg("la8: resetting sequencer logic"); |
f4314d7e UH |
329 | (void) la8_write(la8, buf, 8); /* Ignore errors. */ |
330 | g_usleep(100 * 1000); | |
331 | ||
332 | /* Purge FTDI buffers, then reset and close the FTDI device. */ | |
b08024a8 | 333 | sr_dbg("la8: purging buffers, resetting+closing FTDI device"); |
f4314d7e UH |
334 | |
335 | /* Log errors, but ignore them (i.e., don't abort). */ | |
336 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) | |
b08024a8 | 337 | sr_warn("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
f4314d7e UH |
338 | __func__, ret, ftdi_get_error_string(la8->ftdic)); |
339 | if ((ret = ftdi_usb_reset(la8->ftdic)) < 0) | |
b08024a8 UH |
340 | sr_warn("la8: %s: ftdi_usb_reset: (%d) %s", __func__, |
341 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 342 | if ((ret = ftdi_usb_close(la8->ftdic)) < 0) |
b08024a8 UH |
343 | sr_warn("la8: %s: ftdi_usb_close: (%d) %s", __func__, |
344 | ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e | 345 | } else { |
b08024a8 | 346 | sr_dbg("la8: %s: usb_dev was NULL, nothing to do", __func__); |
f4314d7e UH |
347 | } |
348 | ||
349 | ftdi_free(la8->ftdic); /* Returns void. */ | |
350 | la8->ftdic = NULL; | |
351 | ||
352 | return SR_OK; | |
353 | } | |
354 | ||
355 | /** | |
356 | * Reset the ChronoVu LA8. | |
357 | * | |
358 | * The LA8 must be reset after a failed read/write operation or upon timeouts. | |
359 | * | |
360 | * @param la8 The LA8 struct containing private per-device-instance data. | |
361 | * @return SR_OK upon success, SR_ERR upon failure. | |
362 | */ | |
363 | static int la8_reset(struct la8 *la8) | |
364 | { | |
365 | uint8_t buf[4096]; | |
366 | time_t done, now; | |
367 | int bytes_read; | |
368 | ||
369 | if (!la8) { | |
b08024a8 | 370 | sr_warn("la8: %s: la8 was NULL", __func__); |
8703f512 | 371 | return SR_ERR_ARG; |
f4314d7e UH |
372 | } |
373 | ||
374 | if (!la8->ftdic) { | |
b08024a8 | 375 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 376 | return SR_ERR_ARG; |
f4314d7e UH |
377 | } |
378 | ||
b08024a8 | 379 | sr_dbg("la8: resetting the device"); |
f4314d7e UH |
380 | |
381 | /* | |
382 | * Purge pending read data from the FTDI hardware FIFO until | |
383 | * no more data is left, or a timeout occurs (after 20s). | |
384 | */ | |
385 | done = 20 + time(NULL); | |
386 | do { | |
387 | /* TODO: Ignore errors? Check for < 0 at least! */ | |
388 | bytes_read = la8_read(la8, (uint8_t *)&buf, 4096); | |
389 | now = time(NULL); | |
390 | } while ((done > now) && (bytes_read > 0)); | |
391 | ||
392 | /* Reset the LA8 sequencer logic and close the USB port. */ | |
393 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ | |
394 | ||
b08024a8 | 395 | sr_dbg("la8: device reset finished"); |
f4314d7e UH |
396 | |
397 | return SR_OK; | |
398 | } | |
399 | ||
ecaf59db UH |
400 | static int configure_probes(struct la8 *la8, GSList *probes) |
401 | { | |
402 | struct sr_probe *probe; | |
403 | GSList *l; | |
404 | uint8_t probe_bit; | |
405 | char *tc; | |
406 | ||
407 | la8->trigger_pattern = 0; | |
408 | la8->trigger_mask = 0; /* Default to "don't care" for all probes. */ | |
409 | ||
410 | for (l = probes; l; l = l->next) { | |
411 | probe = (struct sr_probe *)l->data; | |
412 | ||
413 | if (!probe) { | |
414 | sr_err("la8: %s: probe was NULL", __func__); | |
415 | return SR_ERR; | |
416 | } | |
417 | ||
418 | /* Skip disabled probes. */ | |
419 | if (!probe->enabled) | |
420 | continue; | |
421 | ||
422 | /* Skip (enabled) probes with no configured trigger. */ | |
423 | if (!probe->trigger) | |
424 | continue; | |
425 | ||
426 | /* Note: Must only be run if probe->trigger != NULL. */ | |
427 | if (probe->index < 0 || probe->index > 7) { | |
428 | sr_err("la8: %s: invalid probe index %d, must be " | |
429 | "between 0 and 7", __func__, probe->index); | |
430 | return SR_ERR; | |
431 | } | |
432 | ||
433 | probe_bit = (1 << (probe->index - 1)); | |
434 | ||
435 | /* Configure the probe's trigger mask and trigger pattern. */ | |
436 | for (tc = probe->trigger; tc && *tc; tc++) { | |
437 | la8->trigger_mask |= probe_bit; | |
438 | ||
439 | /* Sanity check, LA8 only supports low/high trigger. */ | |
440 | if (*tc != '0' && *tc != '1') { | |
441 | sr_err("la8: %s: invalid trigger '%c', only " | |
442 | "'0'/'1' supported", __func__, *tc); | |
443 | return SR_ERR; | |
444 | } | |
445 | ||
446 | if (*tc == '1') | |
447 | la8->trigger_pattern |= probe_bit; | |
448 | } | |
449 | } | |
450 | ||
451 | sr_dbg("la8: %s: trigger_mask = 0x%x, trigger_pattern = 0x%x", | |
452 | __func__, la8->trigger_mask, la8->trigger_pattern); | |
453 | ||
454 | return SR_OK; | |
455 | } | |
456 | ||
f4314d7e UH |
457 | static int hw_init(const char *deviceinfo) |
458 | { | |
459 | int ret; | |
460 | struct sr_device_instance *sdi; | |
461 | struct la8 *la8; | |
462 | ||
b08024a8 | 463 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
464 | |
465 | /* Avoid compiler errors. */ | |
466 | deviceinfo = deviceinfo; | |
467 | ||
468 | /* Allocate memory for our private driver context. */ | |
2e82a17b | 469 | if (!(la8 = g_try_malloc(sizeof(struct la8)))) { |
b08024a8 | 470 | sr_warn("la8: %s: struct la8 malloc failed", __func__); |
f4314d7e UH |
471 | ret = SR_ERR_MALLOC; |
472 | goto err_free_nothing; | |
473 | } | |
474 | ||
475 | /* Set some sane defaults. */ | |
476 | la8->ftdic = NULL; | |
477 | la8->cur_samplerate = SR_MHZ(100); /* 100MHz == max. samplerate */ | |
478 | la8->limit_msec = 0; | |
479 | la8->limit_samples = 0; | |
480 | la8->num_probes = NUM_PROBES; | |
481 | la8->session_id = NULL; | |
482 | la8->mangled_buf = NULL; | |
483 | la8->final_buf = NULL; | |
484 | la8->trigger_pattern = 0x00; /* Value irrelevant, see trigger_mask. */ | |
485 | la8->trigger_mask = 0x00; /* All probes are "don't care". */ | |
486 | la8->trigger_timeout = 10; /* Default to 10s trigger timeout. */ | |
487 | la8->done = 0; | |
488 | la8->block_counter = 0; | |
489 | la8->divcount = 0; /* 10ns sample period == 100MHz samplerate */ | |
490 | ||
491 | /* Allocate memory for the raw (mangled) data from the LA8. */ | |
2e82a17b | 492 | if (!(la8->mangled_buf = g_try_malloc(SDRAM_SIZE))) { |
b08024a8 | 493 | sr_warn("la8: %s: mangled_buf malloc failed", __func__); |
f4314d7e UH |
494 | ret = SR_ERR_MALLOC; |
495 | goto err_free_la8; | |
496 | } | |
497 | ||
498 | /* Allocate memory where we'll store the de-mangled data. */ | |
2e82a17b | 499 | if (!(la8->final_buf = g_try_malloc(SDRAM_SIZE))) { |
b08024a8 | 500 | sr_warn("la8: %s: final_buf malloc failed", __func__); |
f4314d7e UH |
501 | ret = SR_ERR_MALLOC; |
502 | goto err_free_mangled_buf; | |
503 | } | |
504 | ||
505 | /* Allocate memory for the FTDI context (ftdic) and initialize it. */ | |
506 | if (!(la8->ftdic = ftdi_new())) { | |
b08024a8 | 507 | sr_warn("la8: %s: ftdi_new failed", __func__); |
f4314d7e UH |
508 | ret = SR_ERR; /* TODO: More specific error? */ |
509 | goto err_free_final_buf; | |
510 | } | |
511 | ||
512 | /* Check for the device and temporarily open it. */ | |
513 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
514 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
b08024a8 UH |
515 | sr_warn("la8: %s: ftdi_usb_open_desc: (%d) %s", |
516 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
517 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
518 | ret = SR_ERR; /* TODO: More specific error? */ | |
519 | goto err_free_ftdic; | |
520 | } | |
b08024a8 | 521 | sr_dbg("la8: found device"); |
f4314d7e UH |
522 | |
523 | /* Register the device with libsigrok. */ | |
524 | sdi = sr_device_instance_new(0, SR_ST_INITIALIZING, | |
525 | USB_VENDOR_NAME, USB_MODEL_NAME, USB_MODEL_VERSION); | |
526 | if (!sdi) { | |
b08024a8 | 527 | sr_warn("la8: %s: sr_device_instance_new failed", __func__); |
f4314d7e UH |
528 | ret = SR_ERR; /* TODO: More specific error? */ |
529 | goto err_close_ftdic; | |
530 | } | |
531 | ||
532 | sdi->priv = la8; | |
533 | ||
534 | device_instances = g_slist_append(device_instances, sdi); | |
535 | ||
b08024a8 | 536 | sr_dbg("la8: %s finished successfully", __func__); |
f4314d7e UH |
537 | |
538 | /* Close device. We'll reopen it again when we need it. */ | |
539 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
540 | ||
541 | // return SR_OK; /* TODO */ | |
542 | return 1; | |
543 | ||
544 | err_close_ftdic: | |
545 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
546 | err_free_ftdic: | |
2e82a17b | 547 | free(la8->ftdic); /* NOT g_free()! */ |
f4314d7e | 548 | err_free_final_buf: |
2e82a17b | 549 | g_free(la8->final_buf); |
f4314d7e | 550 | err_free_mangled_buf: |
2e82a17b | 551 | g_free(la8->mangled_buf); |
f4314d7e | 552 | err_free_la8: |
2e82a17b | 553 | g_free(la8); |
f4314d7e UH |
554 | err_free_nothing: |
555 | // return ret; /* TODO */ | |
556 | return 0; | |
557 | } | |
558 | ||
559 | static int hw_opendev(int device_index) | |
560 | { | |
561 | int ret; | |
562 | struct sr_device_instance *sdi; | |
563 | struct la8 *la8; | |
564 | ||
565 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 566 | sr_warn("la8: %s: sdi was NULL", __func__); |
8703f512 | 567 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
568 | } |
569 | ||
570 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 571 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 572 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
573 | } |
574 | ||
b08024a8 | 575 | sr_dbg("la8: opening device"); |
f4314d7e UH |
576 | |
577 | /* Open the device. */ | |
578 | if ((ret = ftdi_usb_open_desc(la8->ftdic, USB_VENDOR_ID, | |
579 | USB_PRODUCT_ID, USB_DESCRIPTION, NULL)) < 0) { | |
b08024a8 UH |
580 | sr_warn("la8: %s: ftdi_usb_open_desc: (%d) %s", |
581 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
582 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
583 | return SR_ERR; | |
584 | } | |
b08024a8 | 585 | sr_dbg("la8: device opened successfully"); |
f4314d7e UH |
586 | |
587 | /* Purge RX/TX buffers in the FTDI chip. */ | |
588 | if ((ret = ftdi_usb_purge_buffers(la8->ftdic)) < 0) { | |
b08024a8 UH |
589 | sr_warn("la8: %s: ftdi_usb_purge_buffers: (%d) %s", |
590 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
591 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
592 | goto err_opendev_close_ftdic; | |
593 | } | |
b08024a8 | 594 | sr_dbg("la8: FTDI buffers purged successfully"); |
f4314d7e UH |
595 | |
596 | /* Enable flow control in the FTDI chip. */ | |
597 | if ((ret = ftdi_setflowctrl(la8->ftdic, SIO_RTS_CTS_HS)) < 0) { | |
b08024a8 UH |
598 | sr_warn("la8: %s: ftdi_setflowcontrol: (%d) %s", |
599 | __func__, ret, ftdi_get_error_string(la8->ftdic)); | |
f4314d7e UH |
600 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
601 | goto err_opendev_close_ftdic; | |
602 | } | |
b08024a8 | 603 | sr_dbg("la8: FTDI flow control enabled successfully"); |
f4314d7e UH |
604 | |
605 | /* Wait 100ms. */ | |
606 | g_usleep(100 * 1000); | |
607 | ||
608 | sdi->status = SR_ST_ACTIVE; | |
609 | ||
610 | return SR_OK; | |
611 | ||
612 | err_opendev_close_ftdic: | |
613 | (void) la8_close(la8); /* Log, but ignore errors. */ | |
614 | return SR_ERR; | |
615 | } | |
616 | ||
617 | static int set_samplerate(struct sr_device_instance *sdi, uint64_t samplerate) | |
618 | { | |
619 | struct la8 *la8; | |
620 | ||
621 | if (!sdi) { | |
b08024a8 | 622 | sr_warn("la8: %s: sdi was NULL", __func__); |
8703f512 | 623 | return SR_ERR_ARG; |
f4314d7e UH |
624 | } |
625 | ||
626 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 627 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 628 | return SR_ERR_ARG; |
f4314d7e UH |
629 | } |
630 | ||
b08024a8 | 631 | sr_dbg("la8: setting samplerate"); |
f4314d7e UH |
632 | |
633 | fill_supported_samplerates_if_needed(); | |
634 | ||
635 | /* Check if this is a samplerate supported by the hardware. */ | |
636 | if (!is_valid_samplerate(samplerate)) | |
637 | return SR_ERR; | |
638 | ||
639 | /* Set the new samplerate. */ | |
640 | la8->cur_samplerate = samplerate; | |
641 | ||
b08024a8 | 642 | sr_dbg("la8: samplerate set to %" PRIu64 "Hz", la8->cur_samplerate); |
f4314d7e UH |
643 | |
644 | return SR_OK; | |
645 | } | |
646 | ||
647 | static void hw_closedev(int device_index) | |
648 | { | |
649 | struct sr_device_instance *sdi; | |
650 | struct la8 *la8; | |
651 | ||
652 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 653 | sr_warn("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
654 | return; |
655 | } | |
656 | ||
657 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 658 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
659 | return; |
660 | } | |
661 | ||
b08024a8 | 662 | sr_dbg("la8: closing device"); |
f4314d7e UH |
663 | |
664 | if (sdi->status == SR_ST_ACTIVE) { | |
b08024a8 | 665 | sr_dbg("la8: %s: status ACTIVE, closing device", __func__); |
f4314d7e UH |
666 | (void) la8_close_usb_reset_sequencer(la8); /* Ignore errors. */ |
667 | } else { | |
b08024a8 | 668 | sr_dbg("la8: %s: status not ACTIVE, nothing to do", __func__); |
f4314d7e UH |
669 | } |
670 | ||
671 | sdi->status = SR_ST_INACTIVE; | |
2f5c8c96 UH |
672 | |
673 | sr_dbg("la8: %s: freeing sample buffers", __func__); | |
674 | free(la8->mangled_buf); | |
675 | free(la8->final_buf); | |
f4314d7e UH |
676 | } |
677 | ||
678 | static void hw_cleanup(void) | |
679 | { | |
680 | GSList *l; | |
681 | struct sr_device_instance *sdi; | |
682 | ||
b08024a8 | 683 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
684 | |
685 | /* Properly close all devices. */ | |
686 | for (l = device_instances; l; l = l->next) { | |
687 | if ((sdi = l->data) == NULL) { | |
b08024a8 | 688 | sr_warn("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
689 | continue; |
690 | } | |
691 | if (sdi->priv != NULL) | |
692 | free(sdi->priv); | |
693 | else | |
b08024a8 | 694 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
695 | sr_device_instance_free(sdi); /* Returns void. */ |
696 | } | |
697 | g_slist_free(device_instances); /* Returns void. */ | |
698 | device_instances = NULL; | |
699 | } | |
700 | ||
701 | static void *hw_get_device_info(int device_index, int device_info_id) | |
702 | { | |
703 | struct sr_device_instance *sdi; | |
704 | struct la8 *la8; | |
705 | void *info; | |
706 | ||
b08024a8 | 707 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
708 | |
709 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 710 | sr_warn("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
711 | return NULL; |
712 | } | |
713 | ||
714 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 715 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
716 | return NULL; |
717 | } | |
718 | ||
719 | switch (device_info_id) { | |
720 | case SR_DI_INSTANCE: | |
721 | info = sdi; | |
722 | break; | |
723 | case SR_DI_NUM_PROBES: | |
724 | info = GINT_TO_POINTER(NUM_PROBES); | |
725 | break; | |
726 | case SR_DI_SAMPLERATES: | |
727 | fill_supported_samplerates_if_needed(); | |
728 | info = &samplerates; | |
729 | break; | |
730 | case SR_DI_TRIGGER_TYPES: | |
731 | info = (char *)TRIGGER_TYPES; | |
732 | break; | |
733 | case SR_DI_CUR_SAMPLERATE: | |
734 | info = &la8->cur_samplerate; | |
735 | break; | |
736 | default: | |
737 | /* Unknown device info ID, return NULL. */ | |
b08024a8 | 738 | sr_warn("la8: %s: Unknown device info ID", __func__); |
f4314d7e UH |
739 | info = NULL; |
740 | break; | |
741 | } | |
742 | ||
743 | return info; | |
744 | } | |
745 | ||
746 | static int hw_get_status(int device_index) | |
747 | { | |
748 | struct sr_device_instance *sdi; | |
749 | ||
750 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 751 | sr_warn("la8: %s: sdi was NULL, device not found", __func__); |
f4314d7e UH |
752 | return SR_ST_NOT_FOUND; |
753 | } | |
754 | ||
b08024a8 | 755 | sr_dbg("la8: %s: returning status %d", __func__, sdi->status); |
f4314d7e UH |
756 | |
757 | return sdi->status; | |
758 | } | |
759 | ||
760 | static int *hw_get_capabilities(void) | |
761 | { | |
b08024a8 | 762 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
763 | |
764 | return capabilities; | |
765 | } | |
766 | ||
767 | static int hw_set_configuration(int device_index, int capability, void *value) | |
768 | { | |
769 | struct sr_device_instance *sdi; | |
770 | struct la8 *la8; | |
771 | ||
b08024a8 | 772 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
773 | |
774 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 775 | sr_warn("la8: %s: sdi was NULL", __func__); |
8703f512 | 776 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
777 | } |
778 | ||
779 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 780 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 781 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
782 | } |
783 | ||
784 | switch (capability) { | |
785 | case SR_HWCAP_SAMPLERATE: | |
786 | if (set_samplerate(sdi, *(uint64_t *)value) == SR_ERR) | |
787 | return SR_ERR; | |
b08024a8 | 788 | sr_dbg("la8: SAMPLERATE = %" PRIu64, la8->cur_samplerate); |
f4314d7e UH |
789 | break; |
790 | case SR_HWCAP_PROBECONFIG: | |
ecaf59db UH |
791 | if (configure_probes(la8, (GSList *)value) != SR_OK) { |
792 | sr_err("la8: %s: probe config failed", __func__); | |
793 | return SR_ERR; | |
794 | } | |
f4314d7e UH |
795 | break; |
796 | case SR_HWCAP_LIMIT_MSEC: | |
797 | if (*(uint64_t *)value == 0) { | |
b08024a8 | 798 | sr_warn("la8: %s: LIMIT_MSEC can't be 0", __func__); |
f4314d7e UH |
799 | return SR_ERR; |
800 | } | |
801 | la8->limit_msec = *(uint64_t *)value; | |
b08024a8 | 802 | sr_dbg("la8: LIMIT_MSEC = %" PRIu64, la8->limit_msec); |
f4314d7e UH |
803 | break; |
804 | case SR_HWCAP_LIMIT_SAMPLES: | |
805 | if (*(uint64_t *)value < MIN_NUM_SAMPLES) { | |
b08024a8 | 806 | sr_warn("la8: %s: LIMIT_SAMPLES too small", __func__); |
f4314d7e UH |
807 | return SR_ERR; |
808 | } | |
809 | la8->limit_samples = *(uint64_t *)value; | |
b08024a8 | 810 | sr_dbg("la8: LIMIT_SAMPLES = %" PRIu64, la8->limit_samples); |
f4314d7e UH |
811 | break; |
812 | default: | |
813 | /* Unknown capability, return SR_ERR. */ | |
b08024a8 | 814 | sr_warn("la8: %s: Unknown capability", __func__); |
f4314d7e UH |
815 | return SR_ERR; |
816 | break; | |
817 | } | |
818 | ||
819 | return SR_OK; | |
820 | } | |
821 | ||
822 | /** | |
823 | * Get a block of 4096 bytes of data from the LA8. | |
824 | * | |
825 | * @param la8 The LA8 struct containing private per-device-instance data. | |
826 | * @return SR_OK upon success, or SR_ERR upon errors. | |
827 | */ | |
828 | static int la8_read_block(struct la8 *la8) | |
829 | { | |
830 | int i, byte_offset, m, mi, p, index, bytes_read; | |
831 | time_t now; | |
832 | ||
833 | if (!la8) { | |
b08024a8 | 834 | sr_warn("la8: %s: la8 was NULL", __func__); |
8703f512 | 835 | return SR_ERR_ARG; |
f4314d7e UH |
836 | } |
837 | ||
838 | if (!la8->ftdic) { | |
b08024a8 | 839 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 840 | return SR_ERR_ARG; |
f4314d7e UH |
841 | } |
842 | ||
b08024a8 | 843 | // sr_dbg("la8: %s: reading block %d", __func__, la8->block_counter); |
f4314d7e UH |
844 | |
845 | bytes_read = la8_read(la8, la8->mangled_buf, 4096); | |
846 | ||
847 | /* If first block read got 0 bytes, retry until success or timeout. */ | |
848 | if ((bytes_read == 0) && (la8->block_counter == 0)) { | |
849 | do { | |
b08024a8 | 850 | // sr_dbg("la8: %s: reading block 0 again", __func__); |
f4314d7e UH |
851 | bytes_read = la8_read(la8, la8->mangled_buf, 4096); |
852 | /* TODO: How to handle read errors here? */ | |
853 | now = time(NULL); | |
854 | } while ((la8->done > now) && (bytes_read == 0)); | |
855 | } | |
856 | ||
857 | /* Check if block read was successful or a timeout occured. */ | |
858 | if (bytes_read != 4096) { | |
b08024a8 | 859 | sr_warn("la8: %s: trigger timed out", __func__); |
f4314d7e UH |
860 | (void) la8_reset(la8); /* Ignore errors. */ |
861 | return SR_ERR; | |
862 | } | |
863 | ||
864 | /* De-mangle the data. */ | |
b08024a8 | 865 | // sr_dbg("la8: de-mangling samples of block %d", la8->block_counter); |
f4314d7e UH |
866 | byte_offset = la8->block_counter * 4096; |
867 | m = byte_offset / (1024 * 1024); | |
868 | mi = m * (1024 * 1024); | |
869 | for (i = 0; i < 4096; i++) { | |
870 | p = i & (1 << 0); | |
871 | index = m * 2 + (((byte_offset + i) - mi) / 2) * 16; | |
872 | index += (la8->divcount == 0) ? p : (1 - p); | |
873 | la8->final_buf[index] = la8->mangled_buf[i]; | |
874 | } | |
875 | ||
876 | return SR_OK; | |
877 | } | |
878 | ||
879 | static int receive_data(int fd, int revents, void *user_data) | |
880 | { | |
881 | int i, ret; | |
882 | struct sr_device_instance *sdi; | |
883 | struct sr_datafeed_packet packet; | |
884 | struct la8 *la8; | |
885 | ||
886 | /* Avoid compiler errors. */ | |
887 | fd = fd; | |
888 | revents = revents; | |
889 | ||
890 | if (!(sdi = user_data)) { | |
b08024a8 | 891 | sr_warn("la8: %s: user_data was NULL", __func__); |
f4314d7e UH |
892 | return FALSE; |
893 | } | |
894 | ||
895 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 896 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
897 | return FALSE; |
898 | } | |
899 | ||
900 | /* Get one block of data (4096 bytes). */ | |
901 | if ((ret = la8_read_block(la8)) < 0) { | |
b08024a8 | 902 | sr_warn("la8: %s: la8_read_block error: %d", __func__, ret); |
ecaf59db | 903 | hw_stop_acquisition(sdi->index, user_data); |
f4314d7e UH |
904 | return FALSE; |
905 | } | |
906 | ||
907 | /* We need to get exactly 2048 blocks (i.e. 8MB) of data. */ | |
908 | if (la8->block_counter != 2047) { | |
909 | la8->block_counter++; | |
910 | return TRUE; | |
911 | } | |
912 | ||
b08024a8 | 913 | sr_dbg("la8: sampling finished, sending data to session bus now"); |
f4314d7e UH |
914 | |
915 | /* All data was received and demangled, send it to the session bus. */ | |
916 | for (i = 0; i < 2048; i++) { | |
917 | /* Send a 4096 byte SR_DF_LOGIC packet to the session bus. */ | |
b08024a8 | 918 | // sr_dbg("la8: %s: sending SR_DF_LOGIC packet", __func__); |
f4314d7e UH |
919 | packet.type = SR_DF_LOGIC; |
920 | packet.length = 4096; | |
921 | packet.unitsize = 1; | |
922 | packet.payload = la8->final_buf + (i * 4096); | |
923 | sr_session_bus(la8->session_id, &packet); | |
924 | } | |
925 | ||
926 | hw_stop_acquisition(sdi->index, user_data); | |
927 | ||
928 | // return FALSE; /* FIXME? */ | |
929 | return TRUE; | |
930 | } | |
931 | ||
932 | static int hw_start_acquisition(int device_index, gpointer session_device_id) | |
933 | { | |
934 | struct sr_device_instance *sdi; | |
935 | struct la8 *la8; | |
936 | struct sr_datafeed_packet packet; | |
937 | struct sr_datafeed_header header; | |
938 | uint8_t buf[4]; | |
939 | int bytes_written; | |
940 | ||
b08024a8 | 941 | sr_dbg("la8: entering %s", __func__); |
f4314d7e UH |
942 | |
943 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 944 | sr_warn("la8: %s: sdi was NULL", __func__); |
8703f512 | 945 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
946 | } |
947 | ||
948 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 949 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
8703f512 | 950 | return SR_ERR; /* TODO: SR_ERR_ARG? */ |
f4314d7e UH |
951 | } |
952 | ||
953 | if (!la8->ftdic) { | |
b08024a8 | 954 | sr_warn("la8: %s: la8->ftdic was NULL", __func__); |
8703f512 | 955 | return SR_ERR_ARG; |
f4314d7e UH |
956 | } |
957 | ||
958 | la8->divcount = samplerate_to_divcount(la8->cur_samplerate); | |
959 | if (la8->divcount == 0xff) { | |
b08024a8 | 960 | sr_warn("la8: %s: invalid divcount/samplerate", __func__); |
f4314d7e UH |
961 | return SR_ERR; |
962 | } | |
963 | ||
964 | /* Fill acquisition parameters into buf[]. */ | |
965 | buf[0] = la8->divcount; | |
966 | buf[1] = 0xff; /* This byte must always be 0xff. */ | |
967 | buf[2] = la8->trigger_pattern; | |
968 | buf[3] = la8->trigger_mask; | |
969 | ||
970 | /* Start acquisition. */ | |
971 | bytes_written = la8_write(la8, buf, 4); | |
972 | ||
973 | if (bytes_written < 0) { | |
b08024a8 | 974 | sr_warn("la8: acquisition failed to start"); |
f4314d7e UH |
975 | return SR_ERR; |
976 | } else if (bytes_written != 4) { | |
b08024a8 | 977 | sr_warn("la8: acquisition failed to start"); |
f4314d7e UH |
978 | return SR_ERR; /* TODO: Other error and return code? */ |
979 | } | |
980 | ||
b08024a8 | 981 | sr_dbg("la8: acquisition started successfully"); |
f4314d7e UH |
982 | |
983 | la8->session_id = session_device_id; | |
984 | ||
985 | /* Send header packet to the session bus. */ | |
b08024a8 | 986 | sr_dbg("la8: %s: sending SR_DF_HEADER", __func__); |
f4314d7e UH |
987 | packet.type = SR_DF_HEADER; |
988 | packet.length = sizeof(struct sr_datafeed_header); | |
989 | packet.unitsize = 0; | |
990 | packet.payload = &header; | |
991 | header.feed_version = 1; | |
992 | gettimeofday(&header.starttime, NULL); | |
993 | header.samplerate = la8->cur_samplerate; | |
994 | header.protocol_id = SR_PROTO_RAW; | |
995 | header.num_logic_probes = la8->num_probes; | |
996 | header.num_analog_probes = 0; | |
997 | sr_session_bus(session_device_id, &packet); | |
998 | ||
999 | /* Time when we should be done (for detecting trigger timeouts). */ | |
1000 | la8->done = (la8->divcount + 1) * 0.08388608 + time(NULL) | |
1001 | + la8->trigger_timeout; | |
1002 | la8->block_counter = 0; | |
1003 | ||
1004 | /* Hook up a dummy handler to receive data from the LA8. */ | |
1005 | sr_source_add(-1, G_IO_IN, 0, receive_data, sdi); | |
1006 | ||
1007 | return SR_OK; | |
1008 | } | |
1009 | ||
1010 | static void hw_stop_acquisition(int device_index, gpointer session_device_id) | |
1011 | { | |
1012 | struct sr_device_instance *sdi; | |
1013 | struct la8 *la8; | |
1014 | struct sr_datafeed_packet packet; | |
1015 | ||
b08024a8 | 1016 | sr_dbg("la8: stopping acquisition"); |
f4314d7e UH |
1017 | |
1018 | if (!(sdi = sr_get_device_instance(device_instances, device_index))) { | |
b08024a8 | 1019 | sr_warn("la8: %s: sdi was NULL", __func__); |
f4314d7e UH |
1020 | return; |
1021 | } | |
1022 | ||
1023 | if (!(la8 = sdi->priv)) { | |
b08024a8 | 1024 | sr_warn("la8: %s: sdi->priv was NULL", __func__); |
f4314d7e UH |
1025 | return; |
1026 | } | |
1027 | ||
f4314d7e | 1028 | /* Send end packet to the session bus. */ |
b08024a8 | 1029 | sr_dbg("la8: %s: sending SR_DF_END", __func__); |
f4314d7e UH |
1030 | packet.type = SR_DF_END; |
1031 | packet.length = 0; | |
1032 | packet.unitsize = 0; | |
1033 | packet.payload = NULL; | |
1034 | sr_session_bus(session_device_id, &packet); | |
1035 | } | |
1036 | ||
1037 | struct sr_device_plugin chronovu_la8_plugin_info = { | |
1038 | .name = "chronovu-la8", | |
1039 | .longname = "ChronoVu LA8", | |
1040 | .api_version = 1, | |
1041 | .init = hw_init, | |
1042 | .cleanup = hw_cleanup, | |
1043 | .open = hw_opendev, | |
1044 | .close = hw_closedev, | |
1045 | .get_device_info = hw_get_device_info, | |
1046 | .get_status = hw_get_status, | |
1047 | .get_capabilities = hw_get_capabilities, | |
1048 | .set_configuration = hw_set_configuration, | |
1049 | .start_acquisition = hw_start_acquisition, | |
1050 | .stop_acquisition = hw_stop_acquisition, | |
1051 | }; |