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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se> | |
5 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
6 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
7 | * | |
8 | * This program is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, either version 3 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #include <glib.h> | |
23 | #include <libusb.h> | |
24 | #include <stdlib.h> | |
25 | #include <string.h> | |
26 | #include <math.h> | |
27 | #include "libsigrok.h" | |
28 | #include "libsigrok-internal.h" | |
29 | #include "protocol.h" | |
30 | ||
31 | #define LOGIC16_VID 0x21a9 | |
32 | #define LOGIC16_PID 0x1001 | |
33 | ||
34 | #define USB_INTERFACE 0 | |
35 | #define USB_CONFIGURATION 1 | |
36 | #define FX2_FIRMWARE FIRMWARE_DIR "/saleae-logic16-fx2.fw" | |
37 | ||
38 | #define MAX_RENUM_DELAY_MS 3000 | |
39 | #define NUM_SIMUL_TRANSFERS 32 | |
40 | ||
41 | SR_PRIV struct sr_dev_driver saleae_logic16_driver_info; | |
42 | static struct sr_dev_driver *di = &saleae_logic16_driver_info; | |
43 | ||
44 | static const uint32_t scanopts[] = { | |
45 | SR_CONF_CONN, | |
46 | }; | |
47 | ||
48 | static const uint32_t devopts[] = { | |
49 | SR_CONF_LOGIC_ANALYZER, | |
50 | SR_CONF_CONTINUOUS, | |
51 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
52 | SR_CONF_CONN | SR_CONF_GET, | |
53 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
54 | SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
55 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
56 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
57 | }; | |
58 | ||
59 | static const int32_t soft_trigger_matches[] = { | |
60 | SR_TRIGGER_ZERO, | |
61 | SR_TRIGGER_ONE, | |
62 | SR_TRIGGER_RISING, | |
63 | SR_TRIGGER_FALLING, | |
64 | SR_TRIGGER_EDGE, | |
65 | }; | |
66 | ||
67 | static const char *channel_names[] = { | |
68 | "0", "1", "2", "3", "4", "5", "6", "7", "8", | |
69 | "9", "10", "11", "12", "13", "14", "15", | |
70 | NULL, | |
71 | }; | |
72 | ||
73 | static const struct { | |
74 | enum voltage_range range; | |
75 | gdouble low; | |
76 | gdouble high; | |
77 | } volt_thresholds[] = { | |
78 | { VOLTAGE_RANGE_18_33_V, 0.7, 1.4 }, | |
79 | { VOLTAGE_RANGE_5_V, 1.4, 3.6 }, | |
80 | }; | |
81 | ||
82 | static const uint64_t samplerates[] = { | |
83 | SR_KHZ(500), | |
84 | SR_MHZ(1), | |
85 | SR_MHZ(2), | |
86 | SR_MHZ(4), | |
87 | SR_MHZ(5), | |
88 | SR_MHZ(8), | |
89 | SR_MHZ(10), | |
90 | SR_KHZ(12500), | |
91 | SR_MHZ(16), | |
92 | SR_MHZ(25), | |
93 | SR_MHZ(32), | |
94 | SR_MHZ(40), | |
95 | SR_MHZ(80), | |
96 | SR_MHZ(100), | |
97 | }; | |
98 | ||
99 | static int init(struct sr_context *sr_ctx) | |
100 | { | |
101 | return std_init(sr_ctx, di, LOG_PREFIX); | |
102 | } | |
103 | ||
104 | static gboolean check_conf_profile(libusb_device *dev) | |
105 | { | |
106 | struct libusb_device_descriptor des; | |
107 | struct libusb_device_handle *hdl; | |
108 | gboolean ret; | |
109 | unsigned char strdesc[64]; | |
110 | ||
111 | hdl = NULL; | |
112 | ret = FALSE; | |
113 | while (!ret) { | |
114 | /* Assume the FW has not been loaded, unless proven wrong. */ | |
115 | if (libusb_get_device_descriptor(dev, &des) != 0) | |
116 | break; | |
117 | ||
118 | if (libusb_open(dev, &hdl) != 0) | |
119 | break; | |
120 | ||
121 | if (libusb_get_string_descriptor_ascii(hdl, | |
122 | des.iManufacturer, strdesc, sizeof(strdesc)) < 0) | |
123 | break; | |
124 | if (strcmp((const char *)strdesc, "Saleae LLC")) | |
125 | break; | |
126 | ||
127 | if (libusb_get_string_descriptor_ascii(hdl, | |
128 | des.iProduct, strdesc, sizeof(strdesc)) < 0) | |
129 | break; | |
130 | if (strcmp((const char *)strdesc, "Logic S/16")) | |
131 | break; | |
132 | ||
133 | /* If we made it here, it must be a configured Logic16. */ | |
134 | ret = TRUE; | |
135 | } | |
136 | if (hdl) | |
137 | libusb_close(hdl); | |
138 | ||
139 | return ret; | |
140 | } | |
141 | ||
142 | static GSList *scan(GSList *options) | |
143 | { | |
144 | struct drv_context *drvc; | |
145 | struct dev_context *devc; | |
146 | struct sr_dev_inst *sdi; | |
147 | struct sr_usb_dev_inst *usb; | |
148 | struct sr_channel *ch; | |
149 | struct sr_config *src; | |
150 | GSList *l, *devices, *conn_devices; | |
151 | struct libusb_device_descriptor des; | |
152 | libusb_device **devlist; | |
153 | int ret, i, j; | |
154 | const char *conn; | |
155 | char connection_id[64]; | |
156 | ||
157 | drvc = di->priv; | |
158 | ||
159 | conn = NULL; | |
160 | for (l = options; l; l = l->next) { | |
161 | src = l->data; | |
162 | switch (src->key) { | |
163 | case SR_CONF_CONN: | |
164 | conn = g_variant_get_string(src->data, NULL); | |
165 | break; | |
166 | } | |
167 | } | |
168 | if (conn) | |
169 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
170 | else | |
171 | conn_devices = NULL; | |
172 | ||
173 | /* Find all Logic16 devices and upload firmware to them. */ | |
174 | devices = NULL; | |
175 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
176 | for (i = 0; devlist[i]; i++) { | |
177 | if (conn) { | |
178 | usb = NULL; | |
179 | for (l = conn_devices; l; l = l->next) { | |
180 | usb = l->data; | |
181 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
182 | && usb->address == libusb_get_device_address(devlist[i])) | |
183 | break; | |
184 | } | |
185 | if (!l) | |
186 | /* This device matched none of the ones that | |
187 | * matched the conn specification. */ | |
188 | continue; | |
189 | } | |
190 | ||
191 | if ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) { | |
192 | sr_warn("Failed to get device descriptor: %s.", | |
193 | libusb_error_name(ret)); | |
194 | continue; | |
195 | } | |
196 | ||
197 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
198 | ||
199 | if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID) | |
200 | continue; | |
201 | ||
202 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
203 | sdi->status = SR_ST_INITIALIZING; | |
204 | sdi->vendor = g_strdup("Saleae"); | |
205 | sdi->model = g_strdup("Logic16"); | |
206 | sdi->driver = di; | |
207 | sdi->connection_id = g_strdup(connection_id); | |
208 | ||
209 | for (j = 0; channel_names[j]; j++) { | |
210 | ch = sr_channel_new(j, SR_CHANNEL_LOGIC, TRUE, | |
211 | channel_names[j]); | |
212 | sdi->channels = g_slist_append(sdi->channels, ch); | |
213 | } | |
214 | ||
215 | devc = g_malloc0(sizeof(struct dev_context)); | |
216 | devc->selected_voltage_range = VOLTAGE_RANGE_18_33_V; | |
217 | sdi->priv = devc; | |
218 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
219 | devices = g_slist_append(devices, sdi); | |
220 | ||
221 | if (check_conf_profile(devlist[i])) { | |
222 | /* Already has the firmware, so fix the new address. */ | |
223 | sr_dbg("Found a Logic16 device."); | |
224 | sdi->status = SR_ST_INACTIVE; | |
225 | sdi->inst_type = SR_INST_USB; | |
226 | sdi->conn = sr_usb_dev_inst_new( | |
227 | libusb_get_bus_number(devlist[i]), | |
228 | libusb_get_device_address(devlist[i]), NULL); | |
229 | } else { | |
230 | if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION, | |
231 | FX2_FIRMWARE) == SR_OK) | |
232 | /* Store when this device's FW was updated. */ | |
233 | devc->fw_updated = g_get_monotonic_time(); | |
234 | else | |
235 | sr_err("Firmware upload failed."); | |
236 | sdi->inst_type = SR_INST_USB; | |
237 | sdi->conn = sr_usb_dev_inst_new( | |
238 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
239 | } | |
240 | } | |
241 | libusb_free_device_list(devlist, 1); | |
242 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
243 | ||
244 | return devices; | |
245 | } | |
246 | ||
247 | static GSList *dev_list(void) | |
248 | { | |
249 | return ((struct drv_context *)(di->priv))->instances; | |
250 | } | |
251 | ||
252 | static int logic16_dev_open(struct sr_dev_inst *sdi) | |
253 | { | |
254 | libusb_device **devlist; | |
255 | struct sr_usb_dev_inst *usb; | |
256 | struct libusb_device_descriptor des; | |
257 | struct drv_context *drvc; | |
258 | int ret, i, device_count; | |
259 | char connection_id[64]; | |
260 | ||
261 | drvc = di->priv; | |
262 | usb = sdi->conn; | |
263 | ||
264 | if (sdi->status == SR_ST_ACTIVE) | |
265 | /* Device is already in use. */ | |
266 | return SR_ERR; | |
267 | ||
268 | device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
269 | if (device_count < 0) { | |
270 | sr_err("Failed to get device list: %s.", | |
271 | libusb_error_name(device_count)); | |
272 | return SR_ERR; | |
273 | } | |
274 | ||
275 | for (i = 0; i < device_count; i++) { | |
276 | if ((ret = libusb_get_device_descriptor(devlist[i], &des))) { | |
277 | sr_err("Failed to get device descriptor: %s.", | |
278 | libusb_error_name(ret)); | |
279 | continue; | |
280 | } | |
281 | ||
282 | if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID) | |
283 | continue; | |
284 | ||
285 | if ((sdi->status == SR_ST_INITIALIZING) || | |
286 | (sdi->status == SR_ST_INACTIVE)) { | |
287 | /* | |
288 | * Check device by its physical USB bus/port address. | |
289 | */ | |
290 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
291 | if (strcmp(sdi->connection_id, connection_id)) | |
292 | /* This is not the one. */ | |
293 | continue; | |
294 | } | |
295 | ||
296 | if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { | |
297 | if (usb->address == 0xff) | |
298 | /* | |
299 | * First time we touch this device after FW | |
300 | * upload, so we don't know the address yet. | |
301 | */ | |
302 | usb->address = libusb_get_device_address(devlist[i]); | |
303 | } else { | |
304 | sr_err("Failed to open device: %s.", | |
305 | libusb_error_name(ret)); | |
306 | break; | |
307 | } | |
308 | ||
309 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
310 | if (ret == LIBUSB_ERROR_BUSY) { | |
311 | sr_err("Unable to claim USB interface. Another " | |
312 | "program or driver has already claimed it."); | |
313 | break; | |
314 | } else if (ret == LIBUSB_ERROR_NO_DEVICE) { | |
315 | sr_err("Device has been disconnected."); | |
316 | break; | |
317 | } else if (ret != 0) { | |
318 | sr_err("Unable to claim interface: %s.", | |
319 | libusb_error_name(ret)); | |
320 | break; | |
321 | } | |
322 | ||
323 | if ((ret = logic16_init_device(sdi)) != SR_OK) { | |
324 | sr_err("Failed to init device."); | |
325 | break; | |
326 | } | |
327 | ||
328 | sdi->status = SR_ST_ACTIVE; | |
329 | sr_info("Opened device on %d.%d (logical) / %s (physical), interface %d.", | |
330 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
331 | ||
332 | break; | |
333 | } | |
334 | libusb_free_device_list(devlist, 1); | |
335 | ||
336 | if (sdi->status != SR_ST_ACTIVE) { | |
337 | if (usb->devhdl) { | |
338 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
339 | libusb_close(usb->devhdl); | |
340 | usb->devhdl = NULL; | |
341 | } | |
342 | return SR_ERR; | |
343 | } | |
344 | ||
345 | return SR_OK; | |
346 | } | |
347 | ||
348 | static int dev_open(struct sr_dev_inst *sdi) | |
349 | { | |
350 | struct dev_context *devc; | |
351 | int ret; | |
352 | int64_t timediff_us, timediff_ms; | |
353 | ||
354 | devc = sdi->priv; | |
355 | ||
356 | /* | |
357 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
358 | * milliseconds for the FX2 to renumerate. | |
359 | */ | |
360 | ret = SR_ERR; | |
361 | if (devc->fw_updated > 0) { | |
362 | sr_info("Waiting for device to reset."); | |
363 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
364 | g_usleep(300 * 1000); | |
365 | timediff_ms = 0; | |
366 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
367 | if ((ret = logic16_dev_open(sdi)) == SR_OK) | |
368 | break; | |
369 | g_usleep(100 * 1000); | |
370 | ||
371 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
372 | timediff_ms = timediff_us / 1000; | |
373 | sr_spew("Waited %" PRIi64 "ms.", timediff_ms); | |
374 | } | |
375 | if (ret != SR_OK) { | |
376 | sr_err("Device failed to renumerate."); | |
377 | return SR_ERR; | |
378 | } | |
379 | sr_info("Device came back after %" PRIi64 "ms.", timediff_ms); | |
380 | } else { | |
381 | sr_info("Firmware upload was not needed."); | |
382 | ret = logic16_dev_open(sdi); | |
383 | } | |
384 | ||
385 | if (ret != SR_OK) { | |
386 | sr_err("Unable to open device."); | |
387 | return SR_ERR; | |
388 | } | |
389 | ||
390 | if (devc->cur_samplerate == 0) { | |
391 | /* Samplerate hasn't been set; default to the slowest one. */ | |
392 | devc->cur_samplerate = samplerates[0]; | |
393 | } | |
394 | ||
395 | return SR_OK; | |
396 | } | |
397 | ||
398 | static int dev_close(struct sr_dev_inst *sdi) | |
399 | { | |
400 | struct sr_usb_dev_inst *usb; | |
401 | ||
402 | usb = sdi->conn; | |
403 | if (usb->devhdl == NULL) | |
404 | return SR_ERR; | |
405 | ||
406 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
407 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
408 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
409 | libusb_close(usb->devhdl); | |
410 | usb->devhdl = NULL; | |
411 | sdi->status = SR_ST_INACTIVE; | |
412 | ||
413 | return SR_OK; | |
414 | } | |
415 | ||
416 | static int cleanup(void) | |
417 | { | |
418 | int ret; | |
419 | struct drv_context *drvc; | |
420 | ||
421 | if (!(drvc = di->priv)) | |
422 | /* Can get called on an unused driver, doesn't matter. */ | |
423 | return SR_OK; | |
424 | ||
425 | ret = std_dev_clear(di, NULL); | |
426 | g_free(drvc); | |
427 | di->priv = NULL; | |
428 | ||
429 | return ret; | |
430 | } | |
431 | ||
432 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
433 | const struct sr_channel_group *cg) | |
434 | { | |
435 | struct dev_context *devc; | |
436 | struct sr_usb_dev_inst *usb; | |
437 | GVariant *range[2]; | |
438 | char str[128]; | |
439 | int ret; | |
440 | unsigned int i; | |
441 | ||
442 | (void)cg; | |
443 | ||
444 | ret = SR_OK; | |
445 | switch (key) { | |
446 | case SR_CONF_CONN: | |
447 | if (!sdi || !sdi->conn) | |
448 | return SR_ERR_ARG; | |
449 | usb = sdi->conn; | |
450 | if (usb->address == 255) | |
451 | /* Device still needs to re-enumerate after firmware | |
452 | * upload, so we don't know its (future) address. */ | |
453 | return SR_ERR; | |
454 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
455 | *data = g_variant_new_string(str); | |
456 | break; | |
457 | case SR_CONF_SAMPLERATE: | |
458 | if (!sdi) | |
459 | return SR_ERR; | |
460 | devc = sdi->priv; | |
461 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
462 | break; | |
463 | case SR_CONF_CAPTURE_RATIO: | |
464 | if (!sdi) | |
465 | return SR_ERR; | |
466 | devc = sdi->priv; | |
467 | *data = g_variant_new_uint64(devc->capture_ratio); | |
468 | break; | |
469 | case SR_CONF_VOLTAGE_THRESHOLD: | |
470 | if (!sdi) | |
471 | return SR_ERR; | |
472 | devc = sdi->priv; | |
473 | ret = SR_ERR; | |
474 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
475 | if (devc->selected_voltage_range != | |
476 | volt_thresholds[i].range) | |
477 | continue; | |
478 | range[0] = g_variant_new_double(volt_thresholds[i].low); | |
479 | range[1] = g_variant_new_double(volt_thresholds[i].high); | |
480 | *data = g_variant_new_tuple(range, 2); | |
481 | ret = SR_OK; | |
482 | break; | |
483 | } | |
484 | break; | |
485 | default: | |
486 | return SR_ERR_NA; | |
487 | } | |
488 | ||
489 | return ret; | |
490 | } | |
491 | ||
492 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
493 | const struct sr_channel_group *cg) | |
494 | { | |
495 | struct dev_context *devc; | |
496 | gdouble low, high; | |
497 | int ret; | |
498 | unsigned int i; | |
499 | ||
500 | (void)cg; | |
501 | ||
502 | if (sdi->status != SR_ST_ACTIVE) | |
503 | return SR_ERR_DEV_CLOSED; | |
504 | ||
505 | devc = sdi->priv; | |
506 | ||
507 | ret = SR_OK; | |
508 | switch (key) { | |
509 | case SR_CONF_SAMPLERATE: | |
510 | devc->cur_samplerate = g_variant_get_uint64(data); | |
511 | break; | |
512 | case SR_CONF_LIMIT_SAMPLES: | |
513 | devc->limit_samples = g_variant_get_uint64(data); | |
514 | break; | |
515 | case SR_CONF_CAPTURE_RATIO: | |
516 | devc->capture_ratio = g_variant_get_uint64(data); | |
517 | if (devc->capture_ratio > 100) { | |
518 | devc->capture_ratio = 0; | |
519 | ret = SR_ERR; | |
520 | } else | |
521 | ret = SR_OK; | |
522 | break; | |
523 | case SR_CONF_VOLTAGE_THRESHOLD: | |
524 | g_variant_get(data, "(dd)", &low, &high); | |
525 | ret = SR_ERR_ARG; | |
526 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
527 | if (fabs(volt_thresholds[i].low - low) < 0.1 && | |
528 | fabs(volt_thresholds[i].high - high) < 0.1) { | |
529 | devc->selected_voltage_range = | |
530 | volt_thresholds[i].range; | |
531 | ret = SR_OK; | |
532 | break; | |
533 | } | |
534 | } | |
535 | break; | |
536 | default: | |
537 | ret = SR_ERR_NA; | |
538 | } | |
539 | ||
540 | return ret; | |
541 | } | |
542 | ||
543 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
544 | const struct sr_channel_group *cg) | |
545 | { | |
546 | GVariant *gvar, *range[2]; | |
547 | GVariantBuilder gvb; | |
548 | int ret; | |
549 | unsigned int i; | |
550 | ||
551 | (void)sdi; | |
552 | (void)cg; | |
553 | ||
554 | ret = SR_OK; | |
555 | switch (key) { | |
556 | case SR_CONF_SCAN_OPTIONS: | |
557 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
558 | scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t)); | |
559 | break; | |
560 | case SR_CONF_DEVICE_OPTIONS: | |
561 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
562 | devopts, ARRAY_SIZE(devopts), sizeof(uint32_t)); | |
563 | break; | |
564 | case SR_CONF_SAMPLERATE: | |
565 | g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}")); | |
566 | gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), | |
567 | samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t)); | |
568 | g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar); | |
569 | *data = g_variant_builder_end(&gvb); | |
570 | break; | |
571 | case SR_CONF_VOLTAGE_THRESHOLD: | |
572 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
573 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
574 | range[0] = g_variant_new_double(volt_thresholds[i].low); | |
575 | range[1] = g_variant_new_double(volt_thresholds[i].high); | |
576 | gvar = g_variant_new_tuple(range, 2); | |
577 | g_variant_builder_add_value(&gvb, gvar); | |
578 | } | |
579 | *data = g_variant_builder_end(&gvb); | |
580 | break; | |
581 | case SR_CONF_TRIGGER_MATCH: | |
582 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32, | |
583 | soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches), | |
584 | sizeof(int32_t)); | |
585 | break; | |
586 | default: | |
587 | return SR_ERR_NA; | |
588 | } | |
589 | ||
590 | return ret; | |
591 | } | |
592 | ||
593 | static void abort_acquisition(struct dev_context *devc) | |
594 | { | |
595 | int i; | |
596 | ||
597 | devc->sent_samples = -1; | |
598 | ||
599 | for (i = devc->num_transfers - 1; i >= 0; i--) { | |
600 | if (devc->transfers[i]) | |
601 | libusb_cancel_transfer(devc->transfers[i]); | |
602 | } | |
603 | } | |
604 | ||
605 | static unsigned int bytes_per_ms(struct dev_context *devc) | |
606 | { | |
607 | return devc->cur_samplerate * devc->num_channels / 8000; | |
608 | } | |
609 | ||
610 | static size_t get_buffer_size(struct dev_context *devc) | |
611 | { | |
612 | size_t s; | |
613 | ||
614 | /* | |
615 | * The buffer should be large enough to hold 10ms of data and | |
616 | * a multiple of 512. | |
617 | */ | |
618 | s = 10 * bytes_per_ms(devc); | |
619 | return (s + 511) & ~511; | |
620 | } | |
621 | ||
622 | static unsigned int get_number_of_transfers(struct dev_context *devc) | |
623 | { | |
624 | unsigned int n; | |
625 | ||
626 | /* Total buffer size should be able to hold about 500ms of data. */ | |
627 | n = 500 * bytes_per_ms(devc) / get_buffer_size(devc); | |
628 | ||
629 | if (n > NUM_SIMUL_TRANSFERS) | |
630 | return NUM_SIMUL_TRANSFERS; | |
631 | ||
632 | return n; | |
633 | } | |
634 | ||
635 | static unsigned int get_timeout(struct dev_context *devc) | |
636 | { | |
637 | size_t total_size; | |
638 | unsigned int timeout; | |
639 | ||
640 | total_size = get_buffer_size(devc) * get_number_of_transfers(devc); | |
641 | timeout = total_size / bytes_per_ms(devc); | |
642 | return timeout + timeout / 4; /* Leave a headroom of 25% percent. */ | |
643 | } | |
644 | ||
645 | static int configure_channels(const struct sr_dev_inst *sdi) | |
646 | { | |
647 | struct dev_context *devc; | |
648 | struct sr_channel *ch; | |
649 | GSList *l; | |
650 | uint16_t channel_bit; | |
651 | ||
652 | devc = sdi->priv; | |
653 | ||
654 | devc->cur_channels = 0; | |
655 | devc->num_channels = 0; | |
656 | for (l = sdi->channels; l; l = l->next) { | |
657 | ch = (struct sr_channel *)l->data; | |
658 | if (ch->enabled == FALSE) | |
659 | continue; | |
660 | ||
661 | channel_bit = 1 << (ch->index); | |
662 | ||
663 | devc->cur_channels |= channel_bit; | |
664 | ||
665 | #ifdef WORDS_BIGENDIAN | |
666 | /* | |
667 | * Output logic data should be stored in little endian format. | |
668 | * To speed things up during conversion, do the switcharoo | |
669 | * here instead. | |
670 | */ | |
671 | channel_bit = 1 << (ch->index ^ 8); | |
672 | #endif | |
673 | ||
674 | devc->channel_masks[devc->num_channels++] = channel_bit; | |
675 | } | |
676 | ||
677 | return SR_OK; | |
678 | } | |
679 | ||
680 | static int receive_data(int fd, int revents, void *cb_data) | |
681 | { | |
682 | struct timeval tv; | |
683 | struct dev_context *devc; | |
684 | struct drv_context *drvc; | |
685 | const struct sr_dev_inst *sdi; | |
686 | ||
687 | (void)fd; | |
688 | (void)revents; | |
689 | ||
690 | sdi = cb_data; | |
691 | drvc = di->priv; | |
692 | devc = sdi->priv; | |
693 | ||
694 | tv.tv_sec = tv.tv_usec = 0; | |
695 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
696 | ||
697 | if (devc->sent_samples == -2) { | |
698 | logic16_abort_acquisition(sdi); | |
699 | abort_acquisition(devc); | |
700 | } | |
701 | ||
702 | return TRUE; | |
703 | } | |
704 | ||
705 | static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data) | |
706 | { | |
707 | struct dev_context *devc; | |
708 | struct drv_context *drvc; | |
709 | struct sr_usb_dev_inst *usb; | |
710 | struct sr_trigger *trigger; | |
711 | struct libusb_transfer *transfer; | |
712 | unsigned int i, timeout, num_transfers; | |
713 | int ret; | |
714 | unsigned char *buf; | |
715 | size_t size, convsize; | |
716 | ||
717 | if (sdi->status != SR_ST_ACTIVE) | |
718 | return SR_ERR_DEV_CLOSED; | |
719 | ||
720 | drvc = di->priv; | |
721 | devc = sdi->priv; | |
722 | usb = sdi->conn; | |
723 | ||
724 | /* Configures devc->cur_channels. */ | |
725 | if (configure_channels(sdi) != SR_OK) { | |
726 | sr_err("Failed to configure channels."); | |
727 | return SR_ERR; | |
728 | } | |
729 | ||
730 | devc->cb_data = cb_data; | |
731 | devc->sent_samples = 0; | |
732 | devc->empty_transfer_count = 0; | |
733 | devc->cur_channel = 0; | |
734 | memset(devc->channel_data, 0, sizeof(devc->channel_data)); | |
735 | ||
736 | if ((trigger = sr_session_trigger_get(sdi->session))) { | |
737 | int pre_trigger_samples = 0; | |
738 | if (devc->limit_samples > 0) | |
739 | pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100; | |
740 | devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples); | |
741 | if (devc->stl == NULL) | |
742 | return SR_ERR_MALLOC; | |
743 | devc->trigger_fired = FALSE; | |
744 | } else | |
745 | devc->trigger_fired = TRUE; | |
746 | ||
747 | timeout = get_timeout(devc); | |
748 | num_transfers = get_number_of_transfers(devc); | |
749 | size = get_buffer_size(devc); | |
750 | convsize = (size / devc->num_channels + 2) * 16; | |
751 | devc->submitted_transfers = 0; | |
752 | ||
753 | devc->convbuffer_size = convsize; | |
754 | if (!(devc->convbuffer = g_try_malloc(convsize))) { | |
755 | sr_err("Conversion buffer malloc failed."); | |
756 | return SR_ERR_MALLOC; | |
757 | } | |
758 | ||
759 | devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers); | |
760 | if (!devc->transfers) { | |
761 | sr_err("USB transfers malloc failed."); | |
762 | g_free(devc->convbuffer); | |
763 | return SR_ERR_MALLOC; | |
764 | } | |
765 | ||
766 | if ((ret = logic16_setup_acquisition(sdi, devc->cur_samplerate, | |
767 | devc->cur_channels)) != SR_OK) { | |
768 | g_free(devc->transfers); | |
769 | g_free(devc->convbuffer); | |
770 | return ret; | |
771 | } | |
772 | ||
773 | devc->num_transfers = num_transfers; | |
774 | for (i = 0; i < num_transfers; i++) { | |
775 | if (!(buf = g_try_malloc(size))) { | |
776 | sr_err("USB transfer buffer malloc failed."); | |
777 | if (devc->submitted_transfers) | |
778 | abort_acquisition(devc); | |
779 | else { | |
780 | g_free(devc->transfers); | |
781 | g_free(devc->convbuffer); | |
782 | } | |
783 | return SR_ERR_MALLOC; | |
784 | } | |
785 | transfer = libusb_alloc_transfer(0); | |
786 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
787 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
788 | logic16_receive_transfer, (void *)sdi, timeout); | |
789 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
790 | sr_err("Failed to submit transfer: %s.", | |
791 | libusb_error_name(ret)); | |
792 | libusb_free_transfer(transfer); | |
793 | g_free(buf); | |
794 | abort_acquisition(devc); | |
795 | return SR_ERR; | |
796 | } | |
797 | devc->transfers[i] = transfer; | |
798 | devc->submitted_transfers++; | |
799 | } | |
800 | ||
801 | devc->ctx = drvc->sr_ctx; | |
802 | ||
803 | usb_source_add(sdi->session, devc->ctx, timeout, receive_data, (void *)sdi); | |
804 | ||
805 | /* Send header packet to the session bus. */ | |
806 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
807 | ||
808 | if ((ret = logic16_start_acquisition(sdi)) != SR_OK) { | |
809 | abort_acquisition(devc); | |
810 | return ret; | |
811 | } | |
812 | ||
813 | return SR_OK; | |
814 | } | |
815 | ||
816 | static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
817 | { | |
818 | int ret; | |
819 | ||
820 | (void)cb_data; | |
821 | ||
822 | if (sdi->status != SR_ST_ACTIVE) | |
823 | return SR_ERR_DEV_CLOSED; | |
824 | ||
825 | ret = logic16_abort_acquisition(sdi); | |
826 | ||
827 | abort_acquisition(sdi->priv); | |
828 | ||
829 | return ret; | |
830 | } | |
831 | ||
832 | SR_PRIV struct sr_dev_driver saleae_logic16_driver_info = { | |
833 | .name = "saleae-logic16", | |
834 | .longname = "Saleae Logic16", | |
835 | .api_version = 1, | |
836 | .init = init, | |
837 | .cleanup = cleanup, | |
838 | .scan = scan, | |
839 | .dev_list = dev_list, | |
840 | .dev_clear = NULL, | |
841 | .config_get = config_get, | |
842 | .config_set = config_set, | |
843 | .config_list = config_list, | |
844 | .dev_open = dev_open, | |
845 | .dev_close = dev_close, | |
846 | .dev_acquisition_start = dev_acquisition_start, | |
847 | .dev_acquisition_stop = dev_acquisition_stop, | |
848 | .priv = NULL, | |
849 | }; |