2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include <sys/types.h>
32 #include "libsigrok.h"
33 #include "libsigrok-internal.h"
36 /* Max time in ms before we want to check on USB events */
37 /* TODO tune this properly */
40 #define NUM_TIMEBASE 10
43 static const int32_t scanopts[] = {
47 static const int32_t devopts[] = {
53 SR_CONF_TRIGGER_SOURCE,
54 SR_CONF_TRIGGER_SLOPE,
55 SR_CONF_HORIZ_TRIGGERPOS,
63 static const char *probe_names[] = {
68 static const uint64_t buffersizes_32k[] = {
71 static const uint64_t buffersizes_512k[] = {
74 static const uint64_t buffersizes_14k[] = {
78 static const struct dso_profile dev_profiles[] = {
79 { 0x04b4, 0x2090, 0x04b5, 0x2090,
82 FIRMWARE_DIR "/hantek-dso-2090.fw" },
83 { 0x04b4, 0x2150, 0x04b5, 0x2150,
86 FIRMWARE_DIR "/hantek-dso-2150.fw" },
87 { 0x04b4, 0x2250, 0x04b5, 0x2250,
90 FIRMWARE_DIR "/hantek-dso-2250.fw" },
91 { 0x04b4, 0x5200, 0x04b5, 0x5200,
94 FIRMWARE_DIR "/hantek-dso-5200.fw" },
95 { 0x04b4, 0x520a, 0x04b5, 0x520a,
96 "Hantek", "DSO-5200A",
98 FIRMWARE_DIR "/hantek-dso-5200A.fw" },
99 { 0, 0, 0, 0, 0, 0, 0, 0 },
102 static const uint64_t timebases[][2] = {
122 static const uint64_t vdivs[][2] = {
136 static const char *trigger_sources[] = {
143 static const char *filter_targets[] = {
146 /* TODO: "TRIGGER", */
149 static const char *coupling[] = {
155 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
156 static struct sr_dev_driver *di = &hantek_dso_driver_info;
158 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
160 static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof)
162 struct sr_dev_inst *sdi;
163 struct sr_probe *probe;
164 struct drv_context *drvc;
165 struct dev_context *devc;
168 sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING,
169 prof->vendor, prof->model, NULL);
175 * Add only the real probes -- EXT isn't a source of data, only
176 * a trigger source internal to the device.
178 for (i = 0; probe_names[i]; i++) {
179 if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
182 sdi->probes = g_slist_append(sdi->probes, probe);
185 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
186 sr_err("Device context malloc failed.");
190 devc->profile = prof;
191 devc->dev_state = IDLE;
192 devc->timebase = DEFAULT_TIMEBASE;
193 devc->ch1_enabled = TRUE;
194 devc->ch2_enabled = TRUE;
195 devc->voltage_ch1 = DEFAULT_VOLTAGE;
196 devc->voltage_ch2 = DEFAULT_VOLTAGE;
197 devc->coupling_ch1 = DEFAULT_COUPLING;
198 devc->coupling_ch2 = DEFAULT_COUPLING;
199 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
200 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
201 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
202 devc->framesize = DEFAULT_FRAMESIZE;
203 devc->triggerslope = SLOPE_POSITIVE;
204 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
205 devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
208 drvc->instances = g_slist_append(drvc->instances, sdi);
213 static int configure_probes(const struct sr_dev_inst *sdi)
215 struct dev_context *devc;
216 struct sr_probe *probe;
222 g_slist_free(devc->enabled_probes);
223 devc->ch1_enabled = devc->ch2_enabled = FALSE;
224 for (l = sdi->probes, p = 0; l; l = l->next, p++) {
227 devc->ch1_enabled = probe->enabled;
229 devc->ch2_enabled = probe->enabled;
231 devc->enabled_probes = g_slist_append(devc->enabled_probes, probe);
237 static void clear_dev_context(void *priv)
239 struct dev_context *devc;
242 g_free(devc->triggersource);
243 g_slist_free(devc->enabled_probes);
247 static int clear_instances(void)
249 return std_dev_clear(di, clear_dev_context);
252 static int hw_init(struct sr_context *sr_ctx)
254 return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
257 static GSList *hw_scan(GSList *options)
259 struct drv_context *drvc;
260 struct dev_context *devc;
261 struct sr_dev_inst *sdi;
262 struct sr_usb_dev_inst *usb;
263 struct sr_config *src;
264 const struct dso_profile *prof;
265 GSList *l, *devices, *conn_devices;
266 struct libusb_device_descriptor des;
267 libusb_device **devlist;
268 int devcnt, ret, i, j;
272 drvc->instances = NULL;
280 for (l = options; l; l = l->next) {
282 if (src->key == SR_CONF_CONN) {
283 conn = g_variant_get_string(src->data, NULL);
288 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
292 /* Find all Hantek DSO devices and upload firmware to all of them. */
293 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
294 for (i = 0; devlist[i]; i++) {
297 for (l = conn_devices; l; l = l->next) {
299 if (usb->bus == libusb_get_bus_number(devlist[i])
300 && usb->address == libusb_get_device_address(devlist[i]))
304 /* This device matched none of the ones that
305 * matched the conn specification. */
309 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
310 sr_err("Failed to get device descriptor: %s.",
311 libusb_error_name(ret));
316 for (j = 0; dev_profiles[j].orig_vid; j++) {
317 if (des.idVendor == dev_profiles[j].orig_vid
318 && des.idProduct == dev_profiles[j].orig_pid) {
319 /* Device matches the pre-firmware profile. */
320 prof = &dev_profiles[j];
321 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
322 sdi = dso_dev_new(devcnt, prof);
323 devices = g_slist_append(devices, sdi);
325 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
326 prof->firmware) == SR_OK)
327 /* Remember when the firmware on this device was updated */
328 devc->fw_updated = g_get_monotonic_time();
330 sr_err("Firmware upload failed for "
331 "device %d.", devcnt);
332 /* Dummy USB address of 0xff will get overwritten later. */
333 sdi->conn = sr_usb_dev_inst_new(
334 libusb_get_bus_number(devlist[i]), 0xff, NULL);
337 } else if (des.idVendor == dev_profiles[j].fw_vid
338 && des.idProduct == dev_profiles[j].fw_pid) {
339 /* Device matches the post-firmware profile. */
340 prof = &dev_profiles[j];
341 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
342 sdi = dso_dev_new(devcnt, prof);
343 sdi->status = SR_ST_INACTIVE;
344 devices = g_slist_append(devices, sdi);
346 sdi->inst_type = SR_INST_USB;
347 sdi->conn = sr_usb_dev_inst_new(
348 libusb_get_bus_number(devlist[i]),
349 libusb_get_device_address(devlist[i]), NULL);
355 /* not a supported VID/PID */
358 libusb_free_device_list(devlist, 1);
363 static GSList *hw_dev_list(void)
365 return ((struct drv_context *)(di->priv))->instances;
368 static int hw_dev_open(struct sr_dev_inst *sdi)
370 struct dev_context *devc;
371 struct sr_usb_dev_inst *usb;
372 int64_t timediff_us, timediff_ms;
379 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
380 * for the FX2 to renumerate.
383 if (devc->fw_updated > 0) {
384 sr_info("Waiting for device to reset.");
385 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
386 g_usleep(300 * 1000);
388 while (timediff_ms < MAX_RENUM_DELAY_MS) {
389 if ((err = dso_open(sdi)) == SR_OK)
391 g_usleep(100 * 1000);
392 timediff_us = g_get_monotonic_time() - devc->fw_updated;
393 timediff_ms = timediff_us / 1000;
394 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
396 sr_info("Device came back after %d ms.", timediff_ms);
402 sr_err("Unable to open device.");
406 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
408 sr_err("Unable to claim interface: %s.",
409 libusb_error_name(err));
416 static int hw_dev_close(struct sr_dev_inst *sdi)
423 static int hw_cleanup(void)
425 struct drv_context *drvc;
427 if (!(drvc = di->priv))
435 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
437 struct sr_usb_dev_inst *usb;
442 if (!sdi || !sdi->conn)
445 if (usb->address == 255)
446 /* Device still needs to re-enumerate after firmware
447 * upload, so we don't know its (future) address. */
449 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
450 *data = g_variant_new_string(str);
452 case SR_CONF_NUM_TIMEBASE:
453 *data = g_variant_new_int32(NUM_TIMEBASE);
455 case SR_CONF_NUM_VDIV:
456 *data = g_variant_new_int32(NUM_VDIV);
465 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
467 struct dev_context *devc;
469 uint64_t tmp_u64, p, q;
475 if (sdi->status != SR_ST_ACTIVE)
481 case SR_CONF_LIMIT_FRAMES:
482 devc->limit_frames = g_variant_get_uint64(data);
484 case SR_CONF_TRIGGER_SLOPE:
485 tmp_u64 = g_variant_get_uint64(data);
486 if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE)
488 devc->triggerslope = tmp_u64;
490 case SR_CONF_HORIZ_TRIGGERPOS:
491 tmp_double = g_variant_get_double(data);
492 if (tmp_double < 0.0 || tmp_double > 1.0) {
493 sr_err("Trigger position should be between 0.0 and 1.0.");
496 devc->triggerposition = tmp_double;
498 case SR_CONF_BUFFERSIZE:
499 tmp_u64 = g_variant_get_uint64(data);
500 for (i = 0; i < 2; i++) {
501 if (devc->profile->buffersizes[i] == tmp_u64) {
502 devc->framesize = tmp_u64;
509 case SR_CONF_TIMEBASE:
510 g_variant_get(data, "(tt)", &p, &q);
512 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
513 if (timebases[i][0] == p && timebases[i][1] == q) {
519 devc->timebase = tmp_int;
523 case SR_CONF_TRIGGER_SOURCE:
524 tmp_str = g_variant_get_string(data, NULL);
525 for (i = 0; trigger_sources[i]; i++) {
526 if (!strcmp(tmp_str, trigger_sources[i])) {
527 devc->triggersource = g_strdup(tmp_str);
531 if (trigger_sources[i] == 0)
535 tmp_str = g_variant_get_string(data, NULL);
536 devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0;
537 targets = g_strsplit(tmp_str, ",", 0);
538 for (i = 0; targets[i]; i++) {
539 if (targets[i] == '\0')
540 /* Empty filter string can be used to clear them all. */
542 else if (!strcmp(targets[i], "CH1"))
543 devc->filter_ch1 = TRUE;
544 else if (!strcmp(targets[i], "CH2"))
545 devc->filter_ch2 = TRUE;
546 else if (!strcmp(targets[i], "TRIGGER"))
547 devc->filter_trigger = TRUE;
549 sr_err("Invalid filter target %s.", targets[i]);
556 /* TODO: Not supporting vdiv per channel yet. */
557 g_variant_get(data, "(tt)", &p, &q);
559 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
560 if (vdivs[i][0] == p && vdivs[i][1] == q) {
566 devc->voltage_ch1 = tmp_int;
567 devc->voltage_ch2 = tmp_int;
571 case SR_CONF_COUPLING:
572 tmp_str = g_variant_get_string(data, NULL);
573 /* TODO: Not supporting coupling per channel yet. */
574 for (i = 0; coupling[i]; i++) {
575 if (!strcmp(tmp_str, coupling[i])) {
576 devc->coupling_ch1 = i;
577 devc->coupling_ch2 = i;
581 if (coupling[i] == 0)
592 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
594 struct dev_context *devc;
595 GVariant *tuple, *rational[2];
606 case SR_CONF_SCAN_OPTIONS:
607 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
608 scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
610 case SR_CONF_DEVICE_OPTIONS:
611 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
612 devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
614 case SR_CONF_BUFFERSIZE:
615 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
616 devc->profile->buffersizes, 2, sizeof(uint64_t));
618 case SR_CONF_COUPLING:
619 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
622 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
623 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
624 rational[0] = g_variant_new_uint64(vdivs[i][0]);
625 rational[1] = g_variant_new_uint64(vdivs[i][1]);
626 tuple = g_variant_new_tuple(rational, 2);
627 g_variant_builder_add_value(&gvb, tuple);
629 *data = g_variant_builder_end(&gvb);
632 *data = g_variant_new_strv(filter_targets,
633 ARRAY_SIZE(filter_targets));
635 case SR_CONF_TIMEBASE:
636 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
637 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
638 rational[0] = g_variant_new_uint64(timebases[i][0]);
639 rational[1] = g_variant_new_uint64(timebases[i][1]);
640 tuple = g_variant_new_tuple(rational, 2);
641 g_variant_builder_add_value(&gvb, tuple);
643 *data = g_variant_builder_end(&gvb);
645 case SR_CONF_TRIGGER_SOURCE:
646 *data = g_variant_new_strv(trigger_sources,
647 ARRAY_SIZE(trigger_sources));
656 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
659 struct sr_datafeed_packet packet;
660 struct sr_datafeed_analog analog;
661 struct dev_context *devc;
662 float ch1, ch2, range;
663 int num_probes, data_offset, i;
666 num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
667 packet.type = SR_DF_ANALOG;
668 packet.payload = &analog;
669 /* TODO: support for 5xxx series 9-bit samples */
670 analog.probes = devc->enabled_probes;
671 analog.num_samples = num_samples;
672 analog.mq = SR_MQ_VOLTAGE;
673 analog.unit = SR_UNIT_VOLT;
674 /* TODO: Check malloc return value. */
675 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
677 for (i = 0; i < analog.num_samples; i++) {
679 * The device always sends data for both channels. If a channel
680 * is disabled, it contains a copy of the enabled channel's
681 * data. However, we only send the requested channels to
684 * Voltage values are encoded as a value 0-255 (0-512 on the
685 * DSO-5200*), where the value is a point in the range
686 * represented by the vdiv setting. There are 8 vertical divs,
687 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
690 /* TODO: Support for DSO-5xxx series 9-bit samples. */
691 if (devc->ch1_enabled) {
692 range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8;
693 ch1 = range / 255 * *(buf + i * 2 + 1);
694 /* Value is centered around 0V. */
696 analog.data[data_offset++] = ch1;
698 if (devc->ch2_enabled) {
699 range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8;
700 ch2 = range / 255 * *(buf + i * 2);
702 analog.data[data_offset++] = ch2;
705 sr_session_send(devc->cb_data, &packet);
709 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
710 * Only channel data comes in asynchronously, and all transfers for this are
711 * queued up beforehand, so this just needs to chuck the incoming data onto
712 * the libsigrok session bus.
714 static void receive_transfer(struct libusb_transfer *transfer)
716 struct sr_datafeed_packet packet;
717 struct sr_dev_inst *sdi;
718 struct dev_context *devc;
719 int num_samples, pre;
721 sdi = transfer->user_data;
723 sr_spew("receive_transfer(): status %d received %d bytes.",
724 transfer->status, transfer->actual_length);
726 if (transfer->actual_length == 0)
727 /* Nothing to send to the bus. */
730 num_samples = transfer->actual_length / 2;
732 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
733 devc->samp_received + num_samples, devc->framesize);
736 * The device always sends a full frame, but the beginning of the frame
737 * doesn't represent the trigger point. The offset at which the trigger
738 * happened came in with the capture state, so we need to start sending
739 * from there up the session bus. The samples in the frame buffer
740 * before that trigger point came after the end of the device's frame
741 * buffer was reached, and it wrapped around to overwrite up until the
744 if (devc->samp_received < devc->trigger_offset) {
745 /* Trigger point not yet reached. */
746 if (devc->samp_received + num_samples < devc->trigger_offset) {
747 /* The entire chunk is before the trigger point. */
748 memcpy(devc->framebuf + devc->samp_buffered * 2,
749 transfer->buffer, num_samples * 2);
750 devc->samp_buffered += num_samples;
753 * This chunk hits or overruns the trigger point.
754 * Store the part before the trigger fired, and
755 * send the rest up to the session bus.
757 pre = devc->trigger_offset - devc->samp_received;
758 memcpy(devc->framebuf + devc->samp_buffered * 2,
759 transfer->buffer, pre * 2);
760 devc->samp_buffered += pre;
762 /* The rest of this chunk starts with the trigger point. */
763 sr_dbg("Reached trigger point, %d samples buffered.",
764 devc->samp_buffered);
766 /* Avoid the corner case where the chunk ended at
767 * exactly the trigger point. */
768 if (num_samples > pre)
769 send_chunk(sdi, transfer->buffer + pre * 2,
773 /* Already past the trigger point, just send it all out. */
774 send_chunk(sdi, transfer->buffer,
778 devc->samp_received += num_samples;
780 /* Everything in this transfer was either copied to the buffer or
781 * sent to the session bus. */
782 g_free(transfer->buffer);
783 libusb_free_transfer(transfer);
785 if (devc->samp_received >= devc->framesize) {
786 /* That was the last chunk in this frame. Send the buffered
787 * pre-trigger samples out now, in one big chunk. */
788 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
789 devc->samp_buffered);
790 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
792 /* Mark the end of this frame. */
793 packet.type = SR_DF_FRAME_END;
794 sr_session_send(devc->cb_data, &packet);
796 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
797 /* Terminate session */
798 devc->dev_state = STOPPING;
800 devc->dev_state = NEW_CAPTURE;
805 static int handle_event(int fd, int revents, void *cb_data)
807 const struct sr_dev_inst *sdi;
808 struct sr_datafeed_packet packet;
810 struct dev_context *devc;
811 struct drv_context *drvc = di->priv;
812 const struct libusb_pollfd **lupfd;
814 uint32_t trigger_offset;
815 uint8_t capturestate;
822 if (devc->dev_state == STOPPING) {
823 /* We've been told to wind up the acquisition. */
824 sr_dbg("Stopping acquisition.");
826 * TODO: Doesn't really cancel pending transfers so they might
827 * come in after SR_DF_END is sent.
829 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
830 for (i = 0; lupfd[i]; i++)
831 sr_source_remove(lupfd[i]->fd);
834 packet.type = SR_DF_END;
835 sr_session_send(sdi, &packet);
837 devc->dev_state = IDLE;
842 /* Always handle pending libusb events. */
843 tv.tv_sec = tv.tv_usec = 0;
844 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
847 if (devc->dev_state == NEW_CAPTURE) {
848 if (dso_capture_start(sdi) != SR_OK)
850 if (dso_enable_trigger(sdi) != SR_OK)
852 // if (dso_force_trigger(sdi) != SR_OK)
854 sr_dbg("Successfully requested next chunk.");
855 devc->dev_state = CAPTURE;
858 if (devc->dev_state != CAPTURE)
861 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
864 sr_dbg("Capturestate %d.", capturestate);
865 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
866 switch (capturestate) {
868 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
869 devc->capture_empty_count = 0;
870 if (dso_capture_start(sdi) != SR_OK)
872 if (dso_enable_trigger(sdi) != SR_OK)
874 // if (dso_force_trigger(sdi) != SR_OK)
876 sr_dbg("Successfully requested next chunk.");
879 case CAPTURE_FILLING:
882 case CAPTURE_READY_8BIT:
883 /* Remember where in the captured frame the trigger is. */
884 devc->trigger_offset = trigger_offset;
886 num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
887 /* TODO: Check malloc return value. */
888 devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2);
889 devc->samp_buffered = devc->samp_received = 0;
891 /* Tell the scope to send us the first frame. */
892 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
896 * Don't hit the state machine again until we're done fetching
897 * the data we just told the scope to send.
899 devc->dev_state = FETCH_DATA;
901 /* Tell the frontend a new frame is on the way. */
902 packet.type = SR_DF_FRAME_BEGIN;
903 sr_session_send(sdi, &packet);
905 case CAPTURE_READY_9BIT:
907 sr_err("Not yet supported.");
909 case CAPTURE_TIMEOUT:
910 /* Doesn't matter, we'll try again next time. */
913 sr_dbg("Unknown capture state: %d.", capturestate);
920 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
923 const struct libusb_pollfd **lupfd;
924 struct dev_context *devc;
925 struct drv_context *drvc = di->priv;
928 if (sdi->status != SR_ST_ACTIVE)
932 devc->cb_data = cb_data;
934 if (configure_probes(sdi) != SR_OK) {
935 sr_err("Failed to configure probes.");
939 if (dso_init(sdi) != SR_OK)
942 if (dso_capture_start(sdi) != SR_OK)
945 devc->dev_state = CAPTURE;
946 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
947 for (i = 0; lupfd[i]; i++)
948 sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK,
949 handle_event, (void *)sdi);
952 /* Send header packet to the session bus. */
953 std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
958 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
960 struct dev_context *devc;
964 if (sdi->status != SR_ST_ACTIVE)
968 devc->dev_state = STOPPING;
973 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
974 .name = "hantek-dso",
975 .longname = "Hantek DSO",
978 .cleanup = hw_cleanup,
980 .dev_list = hw_dev_list,
981 .dev_clear = clear_instances,
982 .config_get = config_get,
983 .config_set = config_set,
984 .config_list = config_list,
985 .dev_open = hw_dev_open,
986 .dev_close = hw_dev_close,
987 .dev_acquisition_start = hw_dev_acquisition_start,
988 .dev_acquisition_stop = hw_dev_acquisition_stop,