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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 <config.h> | |
23 | #include <glib.h> | |
24 | #include <libusb.h> | |
25 | #include <stdlib.h> | |
26 | #include <string.h> | |
27 | #include <math.h> | |
28 | #include <libsigrok/libsigrok.h> | |
29 | #include "libsigrok-internal.h" | |
30 | #include "protocol.h" | |
31 | ||
32 | #define LOGIC16_VID 0x21a9 | |
33 | #define LOGIC16_PID 0x1001 | |
34 | ||
35 | #define USB_INTERFACE 0 | |
36 | #define USB_CONFIGURATION 1 | |
37 | #define FX2_FIRMWARE "saleae-logic16-fx2.fw" | |
38 | ||
39 | #define MAX_RENUM_DELAY_MS 3000 | |
40 | #define NUM_SIMUL_TRANSFERS 32 | |
41 | ||
42 | static const uint32_t scanopts[] = { | |
43 | SR_CONF_CONN, | |
44 | }; | |
45 | ||
46 | static const uint32_t drvopts[] = { | |
47 | SR_CONF_LOGIC_ANALYZER, | |
48 | }; | |
49 | ||
50 | static const uint32_t devopts[] = { | |
51 | SR_CONF_CONTINUOUS, | |
52 | SR_CONF_LIMIT_SAMPLES | SR_CONF_SET, | |
53 | SR_CONF_CONN | SR_CONF_GET, | |
54 | SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
55 | SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST, | |
56 | SR_CONF_TRIGGER_MATCH | SR_CONF_LIST, | |
57 | SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET, | |
58 | }; | |
59 | ||
60 | static const int32_t trigger_matches[] = { | |
61 | SR_TRIGGER_ZERO, | |
62 | SR_TRIGGER_ONE, | |
63 | SR_TRIGGER_RISING, | |
64 | SR_TRIGGER_FALLING, | |
65 | SR_TRIGGER_EDGE, | |
66 | }; | |
67 | ||
68 | static const char *channel_names[] = { | |
69 | "0", "1", "2", "3", "4", "5", "6", "7", "8", | |
70 | "9", "10", "11", "12", "13", "14", "15", | |
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(20), | |
93 | SR_MHZ(25), | |
94 | SR_MHZ(32), | |
95 | SR_MHZ(40), | |
96 | SR_MHZ(50), | |
97 | SR_MHZ(80), | |
98 | SR_MHZ(100), | |
99 | }; | |
100 | ||
101 | static gboolean check_conf_profile(libusb_device *dev) | |
102 | { | |
103 | struct libusb_device_descriptor des; | |
104 | struct libusb_device_handle *hdl; | |
105 | gboolean ret; | |
106 | unsigned char strdesc[64]; | |
107 | ||
108 | hdl = NULL; | |
109 | ret = FALSE; | |
110 | while (!ret) { | |
111 | /* Assume the FW has not been loaded, unless proven wrong. */ | |
112 | libusb_get_device_descriptor(dev, &des); | |
113 | ||
114 | if (libusb_open(dev, &hdl) != 0) | |
115 | break; | |
116 | ||
117 | if (libusb_get_string_descriptor_ascii(hdl, | |
118 | des.iManufacturer, strdesc, sizeof(strdesc)) < 0) | |
119 | break; | |
120 | if (strcmp((const char *)strdesc, "Saleae LLC")) | |
121 | break; | |
122 | ||
123 | if (libusb_get_string_descriptor_ascii(hdl, | |
124 | des.iProduct, strdesc, sizeof(strdesc)) < 0) | |
125 | break; | |
126 | if (strcmp((const char *)strdesc, "Logic S/16")) | |
127 | break; | |
128 | ||
129 | /* If we made it here, it must be a configured Logic16. */ | |
130 | ret = TRUE; | |
131 | } | |
132 | if (hdl) | |
133 | libusb_close(hdl); | |
134 | ||
135 | return ret; | |
136 | } | |
137 | ||
138 | static GSList *scan(struct sr_dev_driver *di, GSList *options) | |
139 | { | |
140 | struct drv_context *drvc; | |
141 | struct dev_context *devc; | |
142 | struct sr_dev_inst *sdi; | |
143 | struct sr_usb_dev_inst *usb; | |
144 | struct sr_config *src; | |
145 | GSList *l, *devices, *conn_devices; | |
146 | struct libusb_device_descriptor des; | |
147 | libusb_device **devlist; | |
148 | unsigned int i, j; | |
149 | const char *conn; | |
150 | char connection_id[64]; | |
151 | ||
152 | drvc = di->context; | |
153 | ||
154 | conn = NULL; | |
155 | for (l = options; l; l = l->next) { | |
156 | src = l->data; | |
157 | switch (src->key) { | |
158 | case SR_CONF_CONN: | |
159 | conn = g_variant_get_string(src->data, NULL); | |
160 | break; | |
161 | } | |
162 | } | |
163 | if (conn) | |
164 | conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn); | |
165 | else | |
166 | conn_devices = NULL; | |
167 | ||
168 | /* Find all Logic16 devices and upload firmware to them. */ | |
169 | devices = NULL; | |
170 | libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
171 | for (i = 0; devlist[i]; i++) { | |
172 | if (conn) { | |
173 | usb = NULL; | |
174 | for (l = conn_devices; l; l = l->next) { | |
175 | usb = l->data; | |
176 | if (usb->bus == libusb_get_bus_number(devlist[i]) | |
177 | && usb->address == libusb_get_device_address(devlist[i])) | |
178 | break; | |
179 | } | |
180 | if (!l) | |
181 | /* This device matched none of the ones that | |
182 | * matched the conn specification. */ | |
183 | continue; | |
184 | } | |
185 | ||
186 | libusb_get_device_descriptor(devlist[i], &des); | |
187 | ||
188 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
189 | ||
190 | if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID) | |
191 | continue; | |
192 | ||
193 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); | |
194 | sdi->status = SR_ST_INITIALIZING; | |
195 | sdi->vendor = g_strdup("Saleae"); | |
196 | sdi->model = g_strdup("Logic16"); | |
197 | sdi->connection_id = g_strdup(connection_id); | |
198 | ||
199 | for (j = 0; j < ARRAY_SIZE(channel_names); j++) | |
200 | sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE, | |
201 | channel_names[j]); | |
202 | ||
203 | devc = g_malloc0(sizeof(struct dev_context)); | |
204 | devc->selected_voltage_range = VOLTAGE_RANGE_18_33_V; | |
205 | sdi->priv = devc; | |
206 | devices = g_slist_append(devices, sdi); | |
207 | ||
208 | if (check_conf_profile(devlist[i])) { | |
209 | /* Already has the firmware, so fix the new address. */ | |
210 | sr_dbg("Found a Logic16 device."); | |
211 | sdi->status = SR_ST_INACTIVE; | |
212 | sdi->inst_type = SR_INST_USB; | |
213 | sdi->conn = sr_usb_dev_inst_new( | |
214 | libusb_get_bus_number(devlist[i]), | |
215 | libusb_get_device_address(devlist[i]), NULL); | |
216 | } else { | |
217 | if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i], | |
218 | USB_CONFIGURATION, FX2_FIRMWARE) == SR_OK) | |
219 | /* Store when this device's FW was updated. */ | |
220 | devc->fw_updated = g_get_monotonic_time(); | |
221 | else | |
222 | sr_err("Firmware upload failed."); | |
223 | sdi->inst_type = SR_INST_USB; | |
224 | sdi->conn = sr_usb_dev_inst_new( | |
225 | libusb_get_bus_number(devlist[i]), 0xff, NULL); | |
226 | } | |
227 | } | |
228 | libusb_free_device_list(devlist, 1); | |
229 | g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free); | |
230 | ||
231 | return std_scan_complete(di, devices); | |
232 | } | |
233 | ||
234 | static int logic16_dev_open(struct sr_dev_inst *sdi) | |
235 | { | |
236 | struct sr_dev_driver *di; | |
237 | libusb_device **devlist; | |
238 | struct sr_usb_dev_inst *usb; | |
239 | struct libusb_device_descriptor des; | |
240 | struct drv_context *drvc; | |
241 | int ret = SR_ERR, i, device_count; | |
242 | char connection_id[64]; | |
243 | ||
244 | di = sdi->driver; | |
245 | drvc = di->context; | |
246 | usb = sdi->conn; | |
247 | ||
248 | device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
249 | if (device_count < 0) { | |
250 | sr_err("Failed to get device list: %s.", | |
251 | libusb_error_name(device_count)); | |
252 | return SR_ERR; | |
253 | } | |
254 | ||
255 | for (i = 0; i < device_count; i++) { | |
256 | libusb_get_device_descriptor(devlist[i], &des); | |
257 | ||
258 | if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID) | |
259 | continue; | |
260 | ||
261 | if ((sdi->status == SR_ST_INITIALIZING) || | |
262 | (sdi->status == SR_ST_INACTIVE)) { | |
263 | /* | |
264 | * Check device by its physical USB bus/port address. | |
265 | */ | |
266 | usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)); | |
267 | if (strcmp(sdi->connection_id, connection_id)) | |
268 | /* This is not the one. */ | |
269 | continue; | |
270 | } | |
271 | ||
272 | if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { | |
273 | if (usb->address == 0xff) | |
274 | /* | |
275 | * First time we touch this device after FW | |
276 | * upload, so we don't know the address yet. | |
277 | */ | |
278 | usb->address = libusb_get_device_address(devlist[i]); | |
279 | } else { | |
280 | sr_err("Failed to open device: %s.", | |
281 | libusb_error_name(ret)); | |
282 | ret = SR_ERR; | |
283 | break; | |
284 | } | |
285 | ||
286 | ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE); | |
287 | if (ret == LIBUSB_ERROR_BUSY) { | |
288 | sr_err("Unable to claim USB interface. Another " | |
289 | "program or driver has already claimed it."); | |
290 | ret = SR_ERR; | |
291 | break; | |
292 | } else if (ret == LIBUSB_ERROR_NO_DEVICE) { | |
293 | sr_err("Device has been disconnected."); | |
294 | ret = SR_ERR; | |
295 | break; | |
296 | } else if (ret != 0) { | |
297 | sr_err("Unable to claim interface: %s.", | |
298 | libusb_error_name(ret)); | |
299 | ret = SR_ERR; | |
300 | break; | |
301 | } | |
302 | ||
303 | if ((ret = logic16_init_device(sdi)) != SR_OK) { | |
304 | sr_err("Failed to init device."); | |
305 | break; | |
306 | } | |
307 | ||
308 | sr_info("Opened device on %d.%d (logical) / %s (physical), interface %d.", | |
309 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
310 | ||
311 | ret = SR_OK; | |
312 | ||
313 | break; | |
314 | } | |
315 | ||
316 | libusb_free_device_list(devlist, 1); | |
317 | ||
318 | if (ret != SR_OK) { | |
319 | if (usb->devhdl) { | |
320 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
321 | libusb_close(usb->devhdl); | |
322 | usb->devhdl = NULL; | |
323 | } | |
324 | return SR_ERR; | |
325 | } | |
326 | ||
327 | return SR_OK; | |
328 | } | |
329 | ||
330 | static int dev_open(struct sr_dev_inst *sdi) | |
331 | { | |
332 | struct dev_context *devc; | |
333 | int ret; | |
334 | int64_t timediff_us, timediff_ms; | |
335 | ||
336 | devc = sdi->priv; | |
337 | ||
338 | /* | |
339 | * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS | |
340 | * milliseconds for the FX2 to renumerate. | |
341 | */ | |
342 | ret = SR_ERR; | |
343 | if (devc->fw_updated > 0) { | |
344 | sr_info("Waiting for device to reset."); | |
345 | /* Takes >= 300ms for the FX2 to be gone from the USB bus. */ | |
346 | g_usleep(300 * 1000); | |
347 | timediff_ms = 0; | |
348 | while (timediff_ms < MAX_RENUM_DELAY_MS) { | |
349 | if ((ret = logic16_dev_open(sdi)) == SR_OK) | |
350 | break; | |
351 | g_usleep(100 * 1000); | |
352 | ||
353 | timediff_us = g_get_monotonic_time() - devc->fw_updated; | |
354 | timediff_ms = timediff_us / 1000; | |
355 | sr_spew("Waited %" PRIi64 "ms.", timediff_ms); | |
356 | } | |
357 | if (ret != SR_OK) { | |
358 | sr_err("Device failed to renumerate."); | |
359 | return SR_ERR; | |
360 | } | |
361 | sr_info("Device came back after %" PRIi64 "ms.", timediff_ms); | |
362 | } else { | |
363 | sr_info("Firmware upload was not needed."); | |
364 | ret = logic16_dev_open(sdi); | |
365 | } | |
366 | ||
367 | if (ret != SR_OK) { | |
368 | sr_err("Unable to open device."); | |
369 | return SR_ERR; | |
370 | } | |
371 | ||
372 | if (devc->cur_samplerate == 0) { | |
373 | /* Samplerate hasn't been set; default to the slowest one. */ | |
374 | devc->cur_samplerate = samplerates[0]; | |
375 | } | |
376 | ||
377 | return SR_OK; | |
378 | } | |
379 | ||
380 | static int dev_close(struct sr_dev_inst *sdi) | |
381 | { | |
382 | struct sr_usb_dev_inst *usb; | |
383 | ||
384 | usb = sdi->conn; | |
385 | ||
386 | if (!usb->devhdl) | |
387 | return SR_ERR_BUG; | |
388 | ||
389 | sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.", | |
390 | usb->bus, usb->address, sdi->connection_id, USB_INTERFACE); | |
391 | libusb_release_interface(usb->devhdl, USB_INTERFACE); | |
392 | libusb_close(usb->devhdl); | |
393 | usb->devhdl = NULL; | |
394 | ||
395 | return SR_OK; | |
396 | } | |
397 | ||
398 | static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
399 | const struct sr_channel_group *cg) | |
400 | { | |
401 | struct dev_context *devc; | |
402 | struct sr_usb_dev_inst *usb; | |
403 | GVariant *range[2]; | |
404 | char str[128]; | |
405 | int ret; | |
406 | unsigned int i; | |
407 | ||
408 | (void)cg; | |
409 | ||
410 | ret = SR_OK; | |
411 | switch (key) { | |
412 | case SR_CONF_CONN: | |
413 | if (!sdi || !sdi->conn) | |
414 | return SR_ERR_ARG; | |
415 | usb = sdi->conn; | |
416 | if (usb->address == 255) | |
417 | /* Device still needs to re-enumerate after firmware | |
418 | * upload, so we don't know its (future) address. */ | |
419 | return SR_ERR; | |
420 | snprintf(str, 128, "%d.%d", usb->bus, usb->address); | |
421 | *data = g_variant_new_string(str); | |
422 | break; | |
423 | case SR_CONF_SAMPLERATE: | |
424 | if (!sdi) | |
425 | return SR_ERR; | |
426 | devc = sdi->priv; | |
427 | *data = g_variant_new_uint64(devc->cur_samplerate); | |
428 | break; | |
429 | case SR_CONF_CAPTURE_RATIO: | |
430 | if (!sdi) | |
431 | return SR_ERR; | |
432 | devc = sdi->priv; | |
433 | *data = g_variant_new_uint64(devc->capture_ratio); | |
434 | break; | |
435 | case SR_CONF_VOLTAGE_THRESHOLD: | |
436 | if (!sdi) | |
437 | return SR_ERR; | |
438 | devc = sdi->priv; | |
439 | ret = SR_ERR; | |
440 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
441 | if (devc->selected_voltage_range != | |
442 | volt_thresholds[i].range) | |
443 | continue; | |
444 | range[0] = g_variant_new_double(volt_thresholds[i].low); | |
445 | range[1] = g_variant_new_double(volt_thresholds[i].high); | |
446 | *data = g_variant_new_tuple(range, 2); | |
447 | ret = SR_OK; | |
448 | break; | |
449 | } | |
450 | break; | |
451 | default: | |
452 | return SR_ERR_NA; | |
453 | } | |
454 | ||
455 | return ret; | |
456 | } | |
457 | ||
458 | static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, | |
459 | const struct sr_channel_group *cg) | |
460 | { | |
461 | struct dev_context *devc; | |
462 | gdouble low, high; | |
463 | int ret; | |
464 | unsigned int i; | |
465 | ||
466 | (void)cg; | |
467 | ||
468 | devc = sdi->priv; | |
469 | ||
470 | ret = SR_OK; | |
471 | switch (key) { | |
472 | case SR_CONF_SAMPLERATE: | |
473 | devc->cur_samplerate = g_variant_get_uint64(data); | |
474 | break; | |
475 | case SR_CONF_LIMIT_SAMPLES: | |
476 | devc->limit_samples = g_variant_get_uint64(data); | |
477 | break; | |
478 | case SR_CONF_CAPTURE_RATIO: | |
479 | devc->capture_ratio = g_variant_get_uint64(data); | |
480 | ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK; | |
481 | break; | |
482 | case SR_CONF_VOLTAGE_THRESHOLD: | |
483 | g_variant_get(data, "(dd)", &low, &high); | |
484 | ret = SR_ERR_ARG; | |
485 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
486 | if (fabs(volt_thresholds[i].low - low) < 0.1 && | |
487 | fabs(volt_thresholds[i].high - high) < 0.1) { | |
488 | devc->selected_voltage_range = | |
489 | volt_thresholds[i].range; | |
490 | ret = SR_OK; | |
491 | break; | |
492 | } | |
493 | } | |
494 | break; | |
495 | default: | |
496 | ret = SR_ERR_NA; | |
497 | } | |
498 | ||
499 | return ret; | |
500 | } | |
501 | ||
502 | static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, | |
503 | const struct sr_channel_group *cg) | |
504 | { | |
505 | GVariant *gvar, *range[2]; | |
506 | GVariantBuilder gvb; | |
507 | unsigned int i; | |
508 | ||
509 | switch (key) { | |
510 | case SR_CONF_SCAN_OPTIONS: | |
511 | case SR_CONF_DEVICE_OPTIONS: | |
512 | return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts); | |
513 | case SR_CONF_SAMPLERATE: | |
514 | *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates)); | |
515 | break; | |
516 | case SR_CONF_VOLTAGE_THRESHOLD: | |
517 | g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY); | |
518 | for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) { | |
519 | range[0] = g_variant_new_double(volt_thresholds[i].low); | |
520 | range[1] = g_variant_new_double(volt_thresholds[i].high); | |
521 | gvar = g_variant_new_tuple(range, 2); | |
522 | g_variant_builder_add_value(&gvb, gvar); | |
523 | } | |
524 | *data = g_variant_builder_end(&gvb); | |
525 | break; | |
526 | case SR_CONF_TRIGGER_MATCH: | |
527 | *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches)); | |
528 | break; | |
529 | default: | |
530 | return SR_ERR_NA; | |
531 | } | |
532 | ||
533 | return SR_OK; | |
534 | } | |
535 | ||
536 | static void abort_acquisition(struct dev_context *devc) | |
537 | { | |
538 | int i; | |
539 | ||
540 | devc->sent_samples = -1; | |
541 | ||
542 | for (i = devc->num_transfers - 1; i >= 0; i--) { | |
543 | if (devc->transfers[i]) | |
544 | libusb_cancel_transfer(devc->transfers[i]); | |
545 | } | |
546 | } | |
547 | ||
548 | static unsigned int bytes_per_ms(struct dev_context *devc) | |
549 | { | |
550 | return devc->cur_samplerate * devc->num_channels / 8000; | |
551 | } | |
552 | ||
553 | static size_t get_buffer_size(struct dev_context *devc) | |
554 | { | |
555 | size_t s; | |
556 | ||
557 | /* | |
558 | * The buffer should be large enough to hold 10ms of data and | |
559 | * a multiple of 512. | |
560 | */ | |
561 | s = 10 * bytes_per_ms(devc); | |
562 | return (s + 511) & ~511; | |
563 | } | |
564 | ||
565 | static unsigned int get_number_of_transfers(struct dev_context *devc) | |
566 | { | |
567 | unsigned int n; | |
568 | ||
569 | /* Total buffer size should be able to hold about 500ms of data. */ | |
570 | n = 500 * bytes_per_ms(devc) / get_buffer_size(devc); | |
571 | ||
572 | if (n > NUM_SIMUL_TRANSFERS) | |
573 | return NUM_SIMUL_TRANSFERS; | |
574 | ||
575 | return n; | |
576 | } | |
577 | ||
578 | static unsigned int get_timeout(struct dev_context *devc) | |
579 | { | |
580 | size_t total_size; | |
581 | unsigned int timeout; | |
582 | ||
583 | total_size = get_buffer_size(devc) * get_number_of_transfers(devc); | |
584 | timeout = total_size / bytes_per_ms(devc); | |
585 | return timeout + timeout / 4; /* Leave a headroom of 25% percent. */ | |
586 | } | |
587 | ||
588 | static int configure_channels(const struct sr_dev_inst *sdi) | |
589 | { | |
590 | struct dev_context *devc; | |
591 | struct sr_channel *ch; | |
592 | GSList *l; | |
593 | uint16_t channel_bit; | |
594 | ||
595 | devc = sdi->priv; | |
596 | ||
597 | devc->cur_channels = 0; | |
598 | devc->num_channels = 0; | |
599 | for (l = sdi->channels; l; l = l->next) { | |
600 | ch = (struct sr_channel *)l->data; | |
601 | if (ch->enabled == FALSE) | |
602 | continue; | |
603 | ||
604 | channel_bit = 1 << (ch->index); | |
605 | ||
606 | devc->cur_channels |= channel_bit; | |
607 | ||
608 | #ifdef WORDS_BIGENDIAN | |
609 | /* | |
610 | * Output logic data should be stored in little endian format. | |
611 | * To speed things up during conversion, do the switcharoo | |
612 | * here instead. | |
613 | */ | |
614 | channel_bit = 1 << (ch->index ^ 8); | |
615 | #endif | |
616 | ||
617 | devc->channel_masks[devc->num_channels++] = channel_bit; | |
618 | } | |
619 | ||
620 | return SR_OK; | |
621 | } | |
622 | ||
623 | static int receive_data(int fd, int revents, void *cb_data) | |
624 | { | |
625 | struct timeval tv; | |
626 | struct dev_context *devc; | |
627 | struct drv_context *drvc; | |
628 | const struct sr_dev_inst *sdi; | |
629 | struct sr_dev_driver *di; | |
630 | ||
631 | (void)fd; | |
632 | (void)revents; | |
633 | ||
634 | sdi = cb_data; | |
635 | di = sdi->driver; | |
636 | drvc = di->context; | |
637 | devc = sdi->priv; | |
638 | ||
639 | tv.tv_sec = tv.tv_usec = 0; | |
640 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
641 | ||
642 | if (devc->sent_samples == -2) { | |
643 | logic16_abort_acquisition(sdi); | |
644 | abort_acquisition(devc); | |
645 | } | |
646 | ||
647 | return TRUE; | |
648 | } | |
649 | ||
650 | static int dev_acquisition_start(const struct sr_dev_inst *sdi) | |
651 | { | |
652 | struct sr_dev_driver *di = sdi->driver; | |
653 | struct dev_context *devc; | |
654 | struct drv_context *drvc; | |
655 | struct sr_usb_dev_inst *usb; | |
656 | struct sr_trigger *trigger; | |
657 | struct libusb_transfer *transfer; | |
658 | unsigned int i, timeout, num_transfers; | |
659 | int ret; | |
660 | unsigned char *buf; | |
661 | size_t size, convsize; | |
662 | ||
663 | drvc = di->context; | |
664 | devc = sdi->priv; | |
665 | usb = sdi->conn; | |
666 | ||
667 | /* Configures devc->cur_channels. */ | |
668 | if (configure_channels(sdi) != SR_OK) { | |
669 | sr_err("Failed to configure channels."); | |
670 | return SR_ERR; | |
671 | } | |
672 | ||
673 | devc->sent_samples = 0; | |
674 | devc->empty_transfer_count = 0; | |
675 | devc->cur_channel = 0; | |
676 | memset(devc->channel_data, 0, sizeof(devc->channel_data)); | |
677 | ||
678 | if ((trigger = sr_session_trigger_get(sdi->session))) { | |
679 | int pre_trigger_samples = 0; | |
680 | if (devc->limit_samples > 0) | |
681 | pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100; | |
682 | devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples); | |
683 | if (!devc->stl) | |
684 | return SR_ERR_MALLOC; | |
685 | devc->trigger_fired = FALSE; | |
686 | } else | |
687 | devc->trigger_fired = TRUE; | |
688 | ||
689 | timeout = get_timeout(devc); | |
690 | num_transfers = get_number_of_transfers(devc); | |
691 | size = get_buffer_size(devc); | |
692 | convsize = (size / devc->num_channels + 2) * 16; | |
693 | devc->submitted_transfers = 0; | |
694 | ||
695 | devc->convbuffer_size = convsize; | |
696 | if (!(devc->convbuffer = g_try_malloc(convsize))) { | |
697 | sr_err("Conversion buffer malloc failed."); | |
698 | return SR_ERR_MALLOC; | |
699 | } | |
700 | ||
701 | devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers); | |
702 | if (!devc->transfers) { | |
703 | sr_err("USB transfers malloc failed."); | |
704 | g_free(devc->convbuffer); | |
705 | return SR_ERR_MALLOC; | |
706 | } | |
707 | ||
708 | if ((ret = logic16_setup_acquisition(sdi, devc->cur_samplerate, | |
709 | devc->cur_channels)) != SR_OK) { | |
710 | g_free(devc->transfers); | |
711 | g_free(devc->convbuffer); | |
712 | return ret; | |
713 | } | |
714 | ||
715 | devc->num_transfers = num_transfers; | |
716 | for (i = 0; i < num_transfers; i++) { | |
717 | if (!(buf = g_try_malloc(size))) { | |
718 | sr_err("USB transfer buffer malloc failed."); | |
719 | if (devc->submitted_transfers) | |
720 | abort_acquisition(devc); | |
721 | else { | |
722 | g_free(devc->transfers); | |
723 | g_free(devc->convbuffer); | |
724 | } | |
725 | return SR_ERR_MALLOC; | |
726 | } | |
727 | transfer = libusb_alloc_transfer(0); | |
728 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
729 | 2 | LIBUSB_ENDPOINT_IN, buf, size, | |
730 | logic16_receive_transfer, (void *)sdi, timeout); | |
731 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
732 | sr_err("Failed to submit transfer: %s.", | |
733 | libusb_error_name(ret)); | |
734 | libusb_free_transfer(transfer); | |
735 | g_free(buf); | |
736 | abort_acquisition(devc); | |
737 | return SR_ERR; | |
738 | } | |
739 | devc->transfers[i] = transfer; | |
740 | devc->submitted_transfers++; | |
741 | } | |
742 | ||
743 | devc->ctx = drvc->sr_ctx; | |
744 | ||
745 | usb_source_add(sdi->session, devc->ctx, timeout, receive_data, (void *)sdi); | |
746 | ||
747 | std_session_send_df_header(sdi); | |
748 | ||
749 | if ((ret = logic16_start_acquisition(sdi)) != SR_OK) { | |
750 | abort_acquisition(devc); | |
751 | return ret; | |
752 | } | |
753 | ||
754 | return SR_OK; | |
755 | } | |
756 | ||
757 | static int dev_acquisition_stop(struct sr_dev_inst *sdi) | |
758 | { | |
759 | int ret; | |
760 | ||
761 | ret = logic16_abort_acquisition(sdi); | |
762 | ||
763 | abort_acquisition(sdi->priv); | |
764 | ||
765 | return ret; | |
766 | } | |
767 | ||
768 | static struct sr_dev_driver saleae_logic16_driver_info = { | |
769 | .name = "saleae-logic16", | |
770 | .longname = "Saleae Logic16", | |
771 | .api_version = 1, | |
772 | .init = std_init, | |
773 | .cleanup = std_cleanup, | |
774 | .scan = scan, | |
775 | .dev_list = std_dev_list, | |
776 | .dev_clear = std_dev_clear, | |
777 | .config_get = config_get, | |
778 | .config_set = config_set, | |
779 | .config_list = config_list, | |
780 | .dev_open = dev_open, | |
781 | .dev_close = dev_close, | |
782 | .dev_acquisition_start = dev_acquisition_start, | |
783 | .dev_acquisition_stop = dev_acquisition_stop, | |
784 | .context = NULL, | |
785 | }; | |
786 | SR_REGISTER_DEV_DRIVER(saleae_logic16_driver_info); |