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