2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 static const struct fx2lafw_profile supported_fx2[] = {
28 * EE Electronics ESLA201A
31 { 0x08a9, 0x0014, "CWAV", "USBee AX", NULL,
32 "fx2lafw-cwav-usbeeax.fw",
33 DEV_CAPS_AX_ANALOG, NULL, NULL},
38 { 0x08a9, 0x0015, "CWAV", "USBee DX", NULL,
39 "fx2lafw-cwav-usbeedx.fw",
40 DEV_CAPS_16BIT, NULL, NULL },
45 { 0x08a9, 0x0009, "CWAV", "USBee SX", NULL,
46 "fx2lafw-cwav-usbeesx.fw",
49 /* DreamSourceLab DSLogic (before FW upload) */
50 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
51 "dreamsourcelab-dslogic-fx2.fw",
52 DEV_CAPS_16BIT, NULL, NULL},
53 /* DreamSourceLab DSLogic (after FW upload) */
54 { 0x2a0e, 0x0001, "DreamSourceLab", "DSLogic", NULL,
55 "dreamsourcelab-dslogic-fx2.fw",
56 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
58 /* DreamSourceLab DSCope (before FW upload) */
59 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
60 "dreamsourcelab-dscope-fx2.fw",
61 DEV_CAPS_16BIT, NULL, NULL},
62 /* DreamSourceLab DSCope (after FW upload) */
63 { 0x2a0e, 0x0002, "DreamSourceLab", "DSCope", NULL,
64 "dreamsourcelab-dscope-fx2.fw",
65 DEV_CAPS_16BIT, "DreamSourceLab", "DSCope"},
67 /* DreamSourceLab DSLogic Pro (before FW upload) */
68 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
69 "dreamsourcelab-dslogic-pro-fx2.fw",
70 DEV_CAPS_16BIT, NULL, NULL},
71 /* DreamSourceLab DSLogic Pro (after FW upload) */
72 { 0x2a0e, 0x0003, "DreamSourceLab", "DSLogic Pro", NULL,
73 "dreamsourcelab-dslogic-pro-fx2.fw",
74 DEV_CAPS_16BIT, "DreamSourceLab", "DSLogic"},
78 * EE Electronics ESLA100
80 * Robomotic BugLogic 3
82 { 0x0925, 0x3881, "Saleae", "Logic", NULL,
83 "fx2lafw-saleae-logic.fw",
87 * Default Cypress FX2 without EEPROM, e.g.:
89 * Braintechnology USB Interface V2.x
91 { 0x04B4, 0x8613, "Cypress", "FX2", NULL,
92 "fx2lafw-cypress-fx2.fw",
93 DEV_CAPS_16BIT, NULL, NULL },
96 * Braintechnology USB-LPS
98 { 0x16d0, 0x0498, "Braintechnology", "USB-LPS", NULL,
99 "fx2lafw-braintechnology-usb-lps.fw",
100 DEV_CAPS_16BIT, NULL, NULL },
103 * sigrok FX2 based 8-channel logic analyzer
105 { 0x1d50, 0x608c, "sigrok", "FX2 LA (8ch)", NULL,
106 "fx2lafw-sigrok-fx2-8ch.fw",
110 * sigrok FX2 based 16-channel logic analyzer
112 { 0x1d50, 0x608d, "sigrok", "FX2 LA (16ch)", NULL,
113 "fx2lafw-sigrok-fx2-16ch.fw",
114 DEV_CAPS_16BIT, NULL, NULL },
119 static const uint32_t drvopts[] = {
120 SR_CONF_LOGIC_ANALYZER,
123 static const uint32_t scanopts[] = {
127 static const uint32_t devopts[] = {
129 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
130 SR_CONF_CONN | SR_CONF_GET,
131 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
132 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
133 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
136 static const int32_t soft_trigger_matches[] = {
144 static const uint64_t samplerates[] = {
163 static const uint64_t dslogic_samplerates[] = {
182 SR_PRIV struct sr_dev_driver fx2lafw_driver_info;
184 static GSList *scan(struct sr_dev_driver *di, GSList *options)
186 struct drv_context *drvc;
187 struct dev_context *devc;
188 struct sr_dev_inst *sdi;
189 struct sr_usb_dev_inst *usb;
190 struct sr_channel *ch;
191 struct sr_channel_group *cg;
192 struct sr_config *src;
193 const struct fx2lafw_profile *prof;
194 GSList *l, *devices, *conn_devices;
195 gboolean has_firmware;
196 struct libusb_device_descriptor des;
197 libusb_device **devlist;
198 struct libusb_device_handle *hdl;
200 int num_logic_channels = 0, num_analog_channels = 0;
202 char manufacturer[64], product[64], serial_num[64], connection_id[64];
203 char channel_name[16];
208 for (l = options; l; l = l->next) {
212 conn = g_variant_get_string(src->data, NULL);
217 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
221 /* Find all fx2lafw compatible devices and upload firmware to them. */
223 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
224 for (i = 0; devlist[i]; i++) {
227 for (l = conn_devices; l; l = l->next) {
229 if (usb->bus == libusb_get_bus_number(devlist[i])
230 && usb->address == libusb_get_device_address(devlist[i]))
234 /* This device matched none of the ones that
235 * matched the conn specification. */
239 libusb_get_device_descriptor( devlist[i], &des);
241 if ((ret = libusb_open(devlist[i], &hdl)) < 0)
244 if (des.iManufacturer == 0) {
245 manufacturer[0] = '\0';
246 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
247 des.iManufacturer, (unsigned char *) manufacturer,
248 sizeof(manufacturer))) < 0) {
249 sr_warn("Failed to get manufacturer string descriptor: %s.",
250 libusb_error_name(ret));
254 if (des.iProduct == 0) {
256 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
257 des.iProduct, (unsigned char *) product,
258 sizeof(product))) < 0) {
259 sr_warn("Failed to get product string descriptor: %s.",
260 libusb_error_name(ret));
264 if (des.iSerialNumber == 0) {
265 serial_num[0] = '\0';
266 } else if ((ret = libusb_get_string_descriptor_ascii(hdl,
267 des.iSerialNumber, (unsigned char *) serial_num,
268 sizeof(serial_num))) < 0) {
269 sr_warn("Failed to get serial number string descriptor: %s.",
270 libusb_error_name(ret));
274 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
279 for (j = 0; supported_fx2[j].vid; j++) {
280 if (des.idVendor == supported_fx2[j].vid &&
281 des.idProduct == supported_fx2[j].pid &&
282 (!supported_fx2[j].usb_manufacturer ||
283 !strcmp(manufacturer, supported_fx2[j].usb_manufacturer)) &&
284 (!supported_fx2[j].usb_manufacturer ||
285 !strcmp(product, supported_fx2[j].usb_product))) {
286 prof = &supported_fx2[j];
291 /* Skip if the device was not found. */
295 sdi = g_malloc0(sizeof(struct sr_dev_inst));
296 sdi->status = SR_ST_INITIALIZING;
297 sdi->vendor = g_strdup(prof->vendor);
298 sdi->model = g_strdup(prof->model);
299 sdi->version = g_strdup(prof->model_version);
301 sdi->serial_num = g_strdup(serial_num);
302 sdi->connection_id = g_strdup(connection_id);
304 /* Fill in channellist according to this device's profile. */
305 num_logic_channels = prof->dev_caps & DEV_CAPS_16BIT ? 16 : 8;
306 num_analog_channels = prof->dev_caps & DEV_CAPS_AX_ANALOG ? 1 : 0;
308 /* Logic channels, all in one channel group. */
309 cg = g_malloc0(sizeof(struct sr_channel_group));
310 cg->name = g_strdup("Logic");
311 for (j = 0; j < num_logic_channels; j++) {
312 sprintf(channel_name, "D%d", j);
313 ch = sr_channel_new(sdi, j, SR_CHANNEL_LOGIC,
315 cg->channels = g_slist_append(cg->channels, ch);
317 sdi->channel_groups = g_slist_append(NULL, cg);
319 for (j = 0; j < num_analog_channels; j++) {
320 snprintf(channel_name, 16, "A%d", j);
321 ch = sr_channel_new(sdi, j + num_logic_channels,
322 SR_CHANNEL_ANALOG, TRUE, channel_name);
324 /* Every analog channel gets its own channel group. */
325 cg = g_malloc0(sizeof(struct sr_channel_group));
326 cg->name = g_strdup(channel_name);
327 cg->channels = g_slist_append(NULL, ch);
328 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
331 devc = fx2lafw_dev_new();
332 devc->profile = prof;
333 if ((prof->dev_caps & DEV_CAPS_16BIT) || (prof->dev_caps & DEV_CAPS_AX_ANALOG))
334 devc->sample_wide = TRUE;
336 drvc->instances = g_slist_append(drvc->instances, sdi);
337 devices = g_slist_append(devices, sdi);
339 if (!strcmp(prof->model, "DSLogic")
340 || !strcmp(prof->model, "DSLogic Pro")
341 || !strcmp(prof->model, "DSCope")) {
342 devc->dslogic = TRUE;
343 devc->samplerates = dslogic_samplerates;
344 devc->num_samplerates = ARRAY_SIZE(dslogic_samplerates);
345 has_firmware = match_manuf_prod(devlist[i], "DreamSourceLab", "DSLogic")
346 || match_manuf_prod(devlist[i], "DreamSourceLab", "DSCope");
348 devc->dslogic = FALSE;
349 devc->samplerates = samplerates;
350 devc->num_samplerates = ARRAY_SIZE(samplerates);
351 has_firmware = match_manuf_prod(devlist[i],
352 "sigrok", "fx2lafw");
356 /* Already has the firmware, so fix the new address. */
357 sr_dbg("Found an fx2lafw device.");
358 sdi->status = SR_ST_INACTIVE;
359 sdi->inst_type = SR_INST_USB;
360 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
361 libusb_get_device_address(devlist[i]), NULL);
363 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
364 USB_CONFIGURATION, prof->firmware) == SR_OK)
365 /* Store when this device's FW was updated. */
366 devc->fw_updated = g_get_monotonic_time();
368 sr_err("Firmware upload failed for "
369 "device %d.%d (logical).",
370 libusb_get_bus_number(devlist[i]),
371 libusb_get_device_address(devlist[i]));
372 sdi->inst_type = SR_INST_USB;
373 sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
377 libusb_free_device_list(devlist, 1);
378 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
383 static void clear_dev_context(void *priv)
385 struct dev_context *devc;
388 g_slist_free(devc->enabled_analog_channels);
392 static int dev_clear(const struct sr_dev_driver *di)
394 return std_dev_clear(di, clear_dev_context);
397 static int dev_open(struct sr_dev_inst *sdi)
399 struct sr_dev_driver *di = sdi->driver;
400 struct sr_usb_dev_inst *usb;
401 struct dev_context *devc;
402 const char *fpga_firmware = NULL;
404 int64_t timediff_us, timediff_ms;
410 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
411 * milliseconds for the FX2 to renumerate.
414 if (devc->fw_updated > 0) {
415 sr_info("Waiting for device to reset.");
416 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
417 g_usleep(300 * 1000);
419 while (timediff_ms < MAX_RENUM_DELAY_MS) {
420 if ((ret = fx2lafw_dev_open(sdi, di)) == SR_OK)
422 g_usleep(100 * 1000);
424 timediff_us = g_get_monotonic_time() - devc->fw_updated;
425 timediff_ms = timediff_us / 1000;
426 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
429 sr_err("Device failed to renumerate.");
432 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
434 sr_info("Firmware upload was not needed.");
435 ret = fx2lafw_dev_open(sdi, di);
439 sr_err("Unable to open device.");
443 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
446 case LIBUSB_ERROR_BUSY:
447 sr_err("Unable to claim USB interface. Another "
448 "program or driver has already claimed it.");
450 case LIBUSB_ERROR_NO_DEVICE:
451 sr_err("Device has been disconnected.");
454 sr_err("Unable to claim interface: %s.",
455 libusb_error_name(ret));
463 if (!strcmp(devc->profile->model, "DSLogic")) {
464 fpga_firmware = DSLOGIC_FPGA_FIRMWARE;
465 } else if (!strcmp(devc->profile->model, "DSLogic Pro")) {
466 fpga_firmware = DSLOGIC_PRO_FPGA_FIRMWARE;
467 } else if (!strcmp(devc->profile->model, "DSCope")) {
468 fpga_firmware = DSCOPE_FPGA_FIRMWARE;
471 if ((ret = dslogic_fpga_firmware_upload(sdi,
472 fpga_firmware)) != SR_OK)
476 if (devc->cur_samplerate == 0) {
477 /* Samplerate hasn't been set; default to the slowest one. */
478 devc->cur_samplerate = devc->samplerates[0];
484 static int dev_close(struct sr_dev_inst *sdi)
486 struct sr_usb_dev_inst *usb;
492 sr_info("fx2lafw: Closing device on %d.%d (logical) / %s (physical) interface %d.",
493 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
494 libusb_release_interface(usb->devhdl, USB_INTERFACE);
495 libusb_close(usb->devhdl);
497 sdi->status = SR_ST_INACTIVE;
502 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
503 const struct sr_channel_group *cg)
505 struct dev_context *devc;
506 struct sr_usb_dev_inst *usb;
521 if (usb->address == 255)
522 /* Device still needs to re-enumerate after firmware
523 * upload, so we don't know its (future) address. */
525 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
526 *data = g_variant_new_string(str);
528 case SR_CONF_LIMIT_SAMPLES:
529 *data = g_variant_new_uint64(devc->limit_samples);
531 case SR_CONF_SAMPLERATE:
532 *data = g_variant_new_uint64(devc->cur_samplerate);
534 case SR_CONF_CAPTURE_RATIO:
535 *data = g_variant_new_uint64(devc->capture_ratio);
544 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
545 const struct sr_channel_group *cg)
547 struct dev_context *devc;
556 if (sdi->status != SR_ST_ACTIVE)
564 case SR_CONF_SAMPLERATE:
565 arg = g_variant_get_uint64(data);
566 for (i = 0; i < devc->num_samplerates; i++) {
567 if (devc->samplerates[i] == arg) {
568 devc->cur_samplerate = arg;
572 if (i == devc->num_samplerates)
575 case SR_CONF_LIMIT_SAMPLES:
576 devc->limit_samples = g_variant_get_uint64(data);
578 case SR_CONF_CAPTURE_RATIO:
579 devc->capture_ratio = g_variant_get_uint64(data);
580 ret = (devc->capture_ratio > 100) ? SR_ERR : SR_OK;
589 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
590 const struct sr_channel_group *cg)
592 struct dev_context *devc;
599 case SR_CONF_SCAN_OPTIONS:
600 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
601 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
603 case SR_CONF_DEVICE_OPTIONS:
605 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
606 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
608 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
609 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
611 case SR_CONF_SAMPLERATE:
615 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
616 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), devc->samplerates,
617 devc->num_samplerates, sizeof(uint64_t));
618 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
619 *data = g_variant_builder_end(&gvb);
621 case SR_CONF_TRIGGER_MATCH:
622 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
623 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
633 static int receive_data(int fd, int revents, void *cb_data)
636 struct drv_context *drvc;
641 drvc = (struct drv_context *)cb_data;
643 tv.tv_sec = tv.tv_usec = 0;
644 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
649 static int start_transfers(const struct sr_dev_inst *sdi)
651 struct dev_context *devc;
652 struct sr_usb_dev_inst *usb;
653 struct sr_trigger *trigger;
654 struct libusb_transfer *transfer;
655 unsigned int i, num_transfers;
656 int endpoint, timeout, ret;
663 devc->sent_samples = 0;
664 devc->acq_aborted = FALSE;
665 devc->empty_transfer_count = 0;
667 if ((trigger = sr_session_trigger_get(sdi->session)) && !devc->dslogic) {
668 int pre_trigger_samples = 0;
669 if (devc->limit_samples > 0)
670 pre_trigger_samples = devc->capture_ratio * devc->limit_samples/100;
671 devc->stl = soft_trigger_logic_new(sdi, trigger, pre_trigger_samples);
673 return SR_ERR_MALLOC;
674 devc->trigger_fired = FALSE;
676 devc->trigger_fired = TRUE;
678 num_transfers = fx2lafw_get_number_of_transfers(devc);
679 size = fx2lafw_get_buffer_size(devc);
680 devc->submitted_transfers = 0;
682 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
683 if (!devc->transfers) {
684 sr_err("USB transfers malloc failed.");
685 return SR_ERR_MALLOC;
688 timeout = fx2lafw_get_timeout(devc);
689 endpoint = devc->dslogic ? 6 : 2;
690 devc->num_transfers = num_transfers;
691 for (i = 0; i < num_transfers; i++) {
692 if (!(buf = g_try_malloc(size))) {
693 sr_err("USB transfer buffer malloc failed.");
694 return SR_ERR_MALLOC;
696 transfer = libusb_alloc_transfer(0);
697 libusb_fill_bulk_transfer(transfer, usb->devhdl,
698 endpoint | LIBUSB_ENDPOINT_IN, buf, size,
699 fx2lafw_receive_transfer, (void *)sdi, timeout);
700 if ((ret = libusb_submit_transfer(transfer)) != 0) {
701 sr_err("Failed to submit transfer: %s.",
702 libusb_error_name(ret));
703 libusb_free_transfer(transfer);
705 fx2lafw_abort_acquisition(devc);
708 devc->transfers[i] = transfer;
709 devc->submitted_transfers++;
712 if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG)
713 devc->send_data_proc = mso_send_data_proc;
715 devc->send_data_proc = la_send_data_proc;
717 std_session_send_df_header(sdi, LOG_PREFIX);
722 static void LIBUSB_CALL dslogic_trigger_receive(struct libusb_transfer *transfer)
724 const struct sr_dev_inst *sdi;
725 struct dslogic_trigger_pos *tpos;
726 struct dev_context *devc;
728 sdi = transfer->user_data;
730 if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
731 sr_dbg("Trigger transfer canceled.");
732 /* Terminate session. */
733 std_session_send_df_end(sdi, LOG_PREFIX);
734 usb_source_remove(sdi->session, devc->ctx);
735 devc->num_transfers = 0;
736 g_free(devc->transfers);
738 soft_trigger_logic_free(devc->stl);
741 } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED
742 && transfer->actual_length == sizeof(struct dslogic_trigger_pos)) {
743 tpos = (struct dslogic_trigger_pos *)transfer->buffer;
744 sr_info("tpos real_pos %d ram_saddr %d", tpos->real_pos, tpos->ram_saddr);
745 devc->trigger_pos = tpos->real_pos;
747 start_transfers(sdi);
749 libusb_free_transfer(transfer);
752 static int dslogic_trigger_request(const struct sr_dev_inst *sdi)
754 struct sr_usb_dev_inst *usb;
755 struct libusb_transfer *transfer;
756 struct dslogic_trigger_pos *tpos;
757 struct dev_context *devc;
763 if ((ret = dslogic_stop_acquisition(sdi)) != SR_OK)
766 if ((ret = dslogic_fpga_configure(sdi)) != SR_OK)
769 if ((ret = dslogic_start_acquisition(sdi)) != SR_OK)
772 sr_dbg("Getting trigger.");
773 tpos = g_malloc(sizeof(struct dslogic_trigger_pos));
774 transfer = libusb_alloc_transfer(0);
775 libusb_fill_bulk_transfer(transfer, usb->devhdl, 6 | LIBUSB_ENDPOINT_IN,
776 (unsigned char *)tpos, sizeof(struct dslogic_trigger_pos),
777 dslogic_trigger_receive, (void *)sdi, 0);
778 if ((ret = libusb_submit_transfer(transfer)) < 0) {
779 sr_err("Failed to request trigger: %s.", libusb_error_name(ret));
780 libusb_free_transfer(transfer);
785 devc->transfers = g_try_malloc0(sizeof(*devc->transfers));
786 if (!devc->transfers) {
787 sr_err("USB trigger_pos transfer malloc failed.");
788 return SR_ERR_MALLOC;
790 devc->num_transfers = 1;
791 devc->submitted_transfers++;
792 devc->transfers[0] = transfer;
797 static int configure_channels(const struct sr_dev_inst *sdi)
799 struct dev_context *devc;
802 struct sr_channel *ch;
806 g_slist_free(devc->enabled_analog_channels);
807 devc->enabled_analog_channels = NULL;
808 memset(devc->ch_enabled, 0, sizeof(devc->ch_enabled));
810 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
812 if ((p <= NUM_CHANNELS) && (ch->type == SR_CHANNEL_ANALOG)) {
813 devc->ch_enabled[p] = ch->enabled;
814 devc->enabled_analog_channels =
815 g_slist_append(devc->enabled_analog_channels, ch);
822 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
824 struct sr_dev_driver *di;
825 struct drv_context *drvc;
826 struct dev_context *devc;
830 if (sdi->status != SR_ST_ACTIVE)
831 return SR_ERR_DEV_CLOSED;
837 devc->ctx = drvc->sr_ctx;
838 devc->sent_samples = 0;
839 devc->empty_transfer_count = 0;
840 devc->acq_aborted = FALSE;
842 if (configure_channels(sdi) != SR_OK) {
843 sr_err("Failed to configure channels.");
847 timeout = fx2lafw_get_timeout(devc);
848 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, drvc);
851 dslogic_trigger_request(sdi);
853 size = fx2lafw_get_buffer_size(devc);
854 /* Prepare for analog sampling. */
855 if (devc->profile->dev_caps & DEV_CAPS_AX_ANALOG) {
856 /* We need a buffer half the size of a transfer. */
857 devc->logic_buffer = g_try_malloc(size / 2);
858 devc->analog_buffer = g_try_malloc(
859 sizeof(float) * size / 2);
861 start_transfers(sdi);
862 if ((ret = fx2lafw_command_start_acquisition(sdi)) != SR_OK) {
863 fx2lafw_abort_acquisition(devc);
871 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
873 struct dev_context *devc;
878 dslogic_stop_acquisition(sdi);
880 fx2lafw_abort_acquisition(sdi->priv);
885 SR_PRIV struct sr_dev_driver fx2lafw_driver_info = {
887 .longname = "fx2lafw (generic driver for FX2 based LAs)",
890 .cleanup = std_cleanup,
892 .dev_list = std_dev_list,
893 .dev_clear = dev_clear,
894 .config_get = config_get,
895 .config_set = config_set,
896 .config_list = config_list,
897 .dev_open = dev_open,
898 .dev_close = dev_close,
899 .dev_acquisition_start = dev_acquisition_start,
900 .dev_acquisition_stop = dev_acquisition_stop,