2 * This file is part of the sigrok 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 devopts[] = {
49 SR_CONF_TRIGGER_SOURCE,
50 SR_CONF_TRIGGER_SLOPE,
51 SR_CONF_HORIZ_TRIGGERPOS,
59 static const char *probe_names[] = {
64 static const uint64_t buffersizes_32k[] = {
67 static const uint64_t buffersizes_512k[] = {
70 static const uint64_t buffersizes_14k[] = {
74 static const struct dso_profile dev_profiles[] = {
75 { 0x04b4, 0x2090, 0x04b5, 0x2090,
78 FIRMWARE_DIR "/hantek-dso-2090.fw" },
79 { 0x04b4, 0x2150, 0x04b5, 0x2150,
82 FIRMWARE_DIR "/hantek-dso-2150.fw" },
83 { 0x04b4, 0x2250, 0x04b5, 0x2250,
86 FIRMWARE_DIR "/hantek-dso-2250.fw" },
87 { 0x04b4, 0x5200, 0x04b5, 0x5200,
90 FIRMWARE_DIR "/hantek-dso-5200.fw" },
91 { 0x04b4, 0x520a, 0x04b5, 0x520a,
92 "Hantek", "DSO-5200A",
94 FIRMWARE_DIR "/hantek-dso-5200A.fw" },
95 { 0, 0, 0, 0, 0, 0, 0, 0 },
98 static const uint64_t timebases[][2] = {
118 static const uint64_t vdivs[][2] = {
132 static const char *trigger_sources[] = {
139 static const char *filter_targets[] = {
142 /* TODO: "TRIGGER", */
145 static const char *coupling[] = {
151 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
152 static struct sr_dev_driver *di = &hantek_dso_driver_info;
154 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
156 static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof)
158 struct sr_dev_inst *sdi;
159 struct sr_probe *probe;
160 struct drv_context *drvc;
161 struct dev_context *devc;
164 sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING,
165 prof->vendor, prof->model, NULL);
171 * Add only the real probes -- EXT isn't a source of data, only
172 * a trigger source internal to the device.
174 for (i = 0; probe_names[i]; i++) {
175 if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
178 sdi->probes = g_slist_append(sdi->probes, probe);
181 if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
182 sr_err("Device context malloc failed.");
186 devc->profile = prof;
187 devc->dev_state = IDLE;
188 devc->timebase = DEFAULT_TIMEBASE;
189 devc->ch1_enabled = TRUE;
190 devc->ch2_enabled = TRUE;
191 devc->voltage_ch1 = DEFAULT_VOLTAGE;
192 devc->voltage_ch2 = DEFAULT_VOLTAGE;
193 devc->coupling_ch1 = DEFAULT_COUPLING;
194 devc->coupling_ch2 = DEFAULT_COUPLING;
195 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
196 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
197 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
198 devc->framesize = DEFAULT_FRAMESIZE;
199 devc->triggerslope = SLOPE_POSITIVE;
200 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
201 devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
204 drvc->instances = g_slist_append(drvc->instances, sdi);
209 static int configure_probes(const struct sr_dev_inst *sdi)
211 struct dev_context *devc;
212 struct sr_probe *probe;
218 g_slist_free(devc->enabled_probes);
219 devc->ch1_enabled = devc->ch2_enabled = FALSE;
220 for (l = sdi->probes, p = 0; l; l = l->next, p++) {
223 devc->ch1_enabled = probe->enabled;
225 devc->ch2_enabled = probe->enabled;
227 devc->enabled_probes = g_slist_append(devc->enabled_probes, probe);
233 /* Properly close and free all devices. */
234 static int clear_instances(void)
236 struct sr_dev_inst *sdi;
237 struct drv_context *drvc;
238 struct dev_context *devc;
242 for (l = drvc->instances; l; l = l->next) {
243 if (!(sdi = l->data)) {
244 /* Log error, but continue cleaning up the rest. */
245 sr_err("%s: sdi was NULL, continuing", __func__);
248 if (!(devc = sdi->priv)) {
249 /* Log error, but continue cleaning up the rest. */
250 sr_err("%s: sdi->priv was NULL, continuing", __func__);
254 sr_usb_dev_inst_free(devc->usb);
255 g_free(devc->triggersource);
256 g_slist_free(devc->enabled_probes);
258 sr_dev_inst_free(sdi);
261 g_slist_free(drvc->instances);
262 drvc->instances = NULL;
267 static int hw_init(struct sr_context *sr_ctx)
269 return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
272 static GSList *hw_scan(GSList *options)
274 struct sr_dev_inst *sdi;
275 const struct dso_profile *prof;
276 struct drv_context *drvc;
277 struct dev_context *devc;
279 struct libusb_device_descriptor des;
280 libusb_device **devlist;
281 int devcnt, ret, i, j;
286 drvc->instances = NULL;
293 /* Find all Hantek DSO devices and upload firmware to all of them. */
294 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
295 for (i = 0; devlist[i]; i++) {
296 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
297 sr_err("Failed to get device descriptor: %s.",
298 libusb_error_name(ret));
303 for (j = 0; dev_profiles[j].orig_vid; j++) {
304 if (des.idVendor == dev_profiles[j].orig_vid
305 && des.idProduct == dev_profiles[j].orig_pid) {
306 /* Device matches the pre-firmware profile. */
307 prof = &dev_profiles[j];
308 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
309 sdi = dso_dev_new(devcnt, prof);
310 devices = g_slist_append(devices, sdi);
312 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
313 prof->firmware) == SR_OK)
314 /* Remember when the firmware on this device was updated */
315 devc->fw_updated = g_get_monotonic_time();
317 sr_err("Firmware upload failed for "
318 "device %d.", devcnt);
319 /* Dummy USB address of 0xff will get overwritten later. */
320 devc->usb = sr_usb_dev_inst_new(
321 libusb_get_bus_number(devlist[i]), 0xff, NULL);
324 } else if (des.idVendor == dev_profiles[j].fw_vid
325 && des.idProduct == dev_profiles[j].fw_pid) {
326 /* Device matches the post-firmware profile. */
327 prof = &dev_profiles[j];
328 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
329 sdi = dso_dev_new(devcnt, prof);
330 sdi->status = SR_ST_INACTIVE;
331 devices = g_slist_append(devices, sdi);
333 devc->usb = sr_usb_dev_inst_new(
334 libusb_get_bus_number(devlist[i]),
335 libusb_get_device_address(devlist[i]), NULL);
341 /* not a supported VID/PID */
344 libusb_free_device_list(devlist, 1);
349 static GSList *hw_dev_list(void)
351 return ((struct drv_context *)(di->priv))->instances;
354 static int hw_dev_open(struct sr_dev_inst *sdi)
356 struct dev_context *devc;
357 int64_t timediff_us, timediff_ms;
363 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
364 * for the FX2 to renumerate.
367 if (devc->fw_updated > 0) {
368 sr_info("Waiting for device to reset.");
369 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
370 g_usleep(300 * 1000);
372 while (timediff_ms < MAX_RENUM_DELAY_MS) {
373 if ((err = dso_open(sdi)) == SR_OK)
375 g_usleep(100 * 1000);
376 timediff_us = g_get_monotonic_time() - devc->fw_updated;
377 timediff_ms = timediff_us / 1000;
378 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
380 sr_info("Device came back after %d ms.", timediff_ms);
386 sr_err("Unable to open device.");
390 err = libusb_claim_interface(devc->usb->devhdl, USB_INTERFACE);
392 sr_err("Unable to claim interface: %s.",
393 libusb_error_name(err));
400 static int hw_dev_close(struct sr_dev_inst *sdi)
407 static int hw_cleanup(void)
409 struct drv_context *drvc;
411 if (!(drvc = di->priv))
419 static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi)
425 case SR_CONF_NUM_TIMEBASE:
426 *data = g_variant_new_int32(NUM_TIMEBASE);
428 case SR_CONF_NUM_VDIV:
429 *data = g_variant_new_int32(NUM_VDIV);
438 static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
440 struct dev_context *devc;
442 uint64_t tmp_u64, p, q;
448 if (sdi->status != SR_ST_ACTIVE)
454 case SR_CONF_LIMIT_FRAMES:
455 devc->limit_frames = g_variant_get_uint64(data);
457 case SR_CONF_TRIGGER_SLOPE:
458 tmp_u64 = g_variant_get_uint64(data);
459 if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE)
461 devc->triggerslope = tmp_u64;
463 case SR_CONF_HORIZ_TRIGGERPOS:
464 tmp_double = g_variant_get_double(data);
465 if (tmp_double < 0.0 || tmp_double > 1.0) {
466 sr_err("Trigger position should be between 0.0 and 1.0.");
469 devc->triggerposition = tmp_double;
471 case SR_CONF_BUFFERSIZE:
472 tmp_u64 = g_variant_get_uint64(data);
473 for (i = 0; i < 2; i++) {
474 if (devc->profile->buffersizes[i] == tmp_u64) {
475 devc->framesize = tmp_u64;
482 case SR_CONF_TIMEBASE:
483 g_variant_get(data, "(tt)", &p, &q);
485 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
486 if (timebases[i][0] == p && timebases[i][1] == q) {
492 devc->timebase = tmp_int;
496 case SR_CONF_TRIGGER_SOURCE:
497 tmp_str = g_variant_get_string(data, NULL);
498 for (i = 0; trigger_sources[i]; i++) {
499 if (!strcmp(tmp_str, trigger_sources[i])) {
500 devc->triggersource = g_strdup(tmp_str);
504 if (trigger_sources[i] == 0)
508 tmp_str = g_variant_get_string(data, NULL);
509 devc->filter_ch1 = devc->filter_ch2 = devc->filter_trigger = 0;
510 targets = g_strsplit(tmp_str, ",", 0);
511 for (i = 0; targets[i]; i++) {
512 if (targets[i] == '\0')
513 /* Empty filter string can be used to clear them all. */
515 else if (!strcmp(targets[i], "CH1"))
516 devc->filter_ch1 = TRUE;
517 else if (!strcmp(targets[i], "CH2"))
518 devc->filter_ch2 = TRUE;
519 else if (!strcmp(targets[i], "TRIGGER"))
520 devc->filter_trigger = TRUE;
522 sr_err("Invalid filter target %s.", targets[i]);
529 /* TODO: Not supporting vdiv per channel yet. */
530 g_variant_get(data, "(tt)", &p, &q);
532 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
533 if (vdivs[i][0] == p && vdivs[i][1] == q) {
539 devc->voltage_ch1 = tmp_int;
540 devc->voltage_ch2 = tmp_int;
544 case SR_CONF_COUPLING:
545 tmp_str = g_variant_get_string(data, NULL);
546 /* TODO: Not supporting coupling per channel yet. */
547 for (i = 0; coupling[i]; i++) {
548 if (!strcmp(tmp_str, coupling[i])) {
549 devc->coupling_ch1 = i;
550 devc->coupling_ch2 = i;
554 if (coupling[i] == 0)
565 static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
567 struct dev_context *devc;
568 GVariant *tuple, *rational[2];
579 case SR_CONF_DEVICE_OPTIONS:
580 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
581 devopts, ARRAY_SIZE(devopts), sizeof(int32_t));
583 case SR_CONF_BUFFERSIZE:
584 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
585 devc->profile->buffersizes, 2, sizeof(uint64_t));
587 case SR_CONF_COUPLING:
588 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
591 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
592 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
593 rational[0] = g_variant_new_uint64(vdivs[i][0]);
594 rational[1] = g_variant_new_uint64(vdivs[i][1]);
595 tuple = g_variant_new_tuple(rational, 2);
596 g_variant_builder_add_value(&gvb, tuple);
598 *data = g_variant_builder_end(&gvb);
601 *data = g_variant_new_strv(filter_targets,
602 ARRAY_SIZE(filter_targets));
604 case SR_CONF_TIMEBASE:
605 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
606 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
607 rational[0] = g_variant_new_uint64(timebases[i][0]);
608 rational[1] = g_variant_new_uint64(timebases[i][1]);
609 tuple = g_variant_new_tuple(rational, 2);
610 g_variant_builder_add_value(&gvb, tuple);
612 *data = g_variant_builder_end(&gvb);
614 case SR_CONF_TRIGGER_SOURCE:
615 *data = g_variant_new_strv(trigger_sources,
616 ARRAY_SIZE(trigger_sources));
625 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
628 struct sr_datafeed_packet packet;
629 struct sr_datafeed_analog analog;
630 struct dev_context *devc;
631 float ch1, ch2, range;
632 int num_probes, data_offset, i;
635 num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
636 packet.type = SR_DF_ANALOG;
637 packet.payload = &analog;
638 /* TODO: support for 5xxx series 9-bit samples */
639 analog.probes = devc->enabled_probes;
640 analog.num_samples = num_samples;
641 analog.mq = SR_MQ_VOLTAGE;
642 analog.unit = SR_UNIT_VOLT;
643 /* TODO: Check malloc return value. */
644 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
646 for (i = 0; i < analog.num_samples; i++) {
648 * The device always sends data for both channels. If a channel
649 * is disabled, it contains a copy of the enabled channel's
650 * data. However, we only send the requested channels to
653 * Voltage values are encoded as a value 0-255 (0-512 on the
654 * DSO-5200*), where the value is a point in the range
655 * represented by the vdiv setting. There are 8 vertical divs,
656 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
659 /* TODO: Support for DSO-5xxx series 9-bit samples. */
660 if (devc->ch1_enabled) {
661 range = ((float)vdivs[devc->voltage_ch1][0] / vdivs[devc->voltage_ch1][1]) * 8;
662 ch1 = range / 255 * *(buf + i * 2 + 1);
663 /* Value is centered around 0V. */
665 analog.data[data_offset++] = ch1;
667 if (devc->ch2_enabled) {
668 range = ((float)vdivs[devc->voltage_ch2][0] / vdivs[devc->voltage_ch2][1]) * 8;
669 ch2 = range / 255 * *(buf + i * 2);
671 analog.data[data_offset++] = ch2;
674 sr_session_send(devc->cb_data, &packet);
678 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
679 * Only channel data comes in asynchronously, and all transfers for this are
680 * queued up beforehand, so this just needs to chuck the incoming data onto
681 * the libsigrok session bus.
683 static void receive_transfer(struct libusb_transfer *transfer)
685 struct sr_datafeed_packet packet;
686 struct sr_dev_inst *sdi;
687 struct dev_context *devc;
688 int num_samples, pre;
690 sdi = transfer->user_data;
692 sr_spew("receive_transfer(): status %d received %d bytes.",
693 transfer->status, transfer->actual_length);
695 if (transfer->actual_length == 0)
696 /* Nothing to send to the bus. */
699 num_samples = transfer->actual_length / 2;
701 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
702 devc->samp_received + num_samples, devc->framesize);
705 * The device always sends a full frame, but the beginning of the frame
706 * doesn't represent the trigger point. The offset at which the trigger
707 * happened came in with the capture state, so we need to start sending
708 * from there up the session bus. The samples in the frame buffer
709 * before that trigger point came after the end of the device's frame
710 * buffer was reached, and it wrapped around to overwrite up until the
713 if (devc->samp_received < devc->trigger_offset) {
714 /* Trigger point not yet reached. */
715 if (devc->samp_received + num_samples < devc->trigger_offset) {
716 /* The entire chunk is before the trigger point. */
717 memcpy(devc->framebuf + devc->samp_buffered * 2,
718 transfer->buffer, num_samples * 2);
719 devc->samp_buffered += num_samples;
722 * This chunk hits or overruns the trigger point.
723 * Store the part before the trigger fired, and
724 * send the rest up to the session bus.
726 pre = devc->trigger_offset - devc->samp_received;
727 memcpy(devc->framebuf + devc->samp_buffered * 2,
728 transfer->buffer, pre * 2);
729 devc->samp_buffered += pre;
731 /* The rest of this chunk starts with the trigger point. */
732 sr_dbg("Reached trigger point, %d samples buffered.",
733 devc->samp_buffered);
735 /* Avoid the corner case where the chunk ended at
736 * exactly the trigger point. */
737 if (num_samples > pre)
738 send_chunk(sdi, transfer->buffer + pre * 2,
742 /* Already past the trigger point, just send it all out. */
743 send_chunk(sdi, transfer->buffer,
747 devc->samp_received += num_samples;
749 /* Everything in this transfer was either copied to the buffer or
750 * sent to the session bus. */
751 g_free(transfer->buffer);
752 libusb_free_transfer(transfer);
754 if (devc->samp_received >= devc->framesize) {
755 /* That was the last chunk in this frame. Send the buffered
756 * pre-trigger samples out now, in one big chunk. */
757 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
758 devc->samp_buffered);
759 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
761 /* Mark the end of this frame. */
762 packet.type = SR_DF_FRAME_END;
763 sr_session_send(devc->cb_data, &packet);
765 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
766 /* Terminate session */
767 devc->dev_state = STOPPING;
769 devc->dev_state = NEW_CAPTURE;
774 static int handle_event(int fd, int revents, void *cb_data)
776 const struct sr_dev_inst *sdi;
777 struct sr_datafeed_packet packet;
779 struct dev_context *devc;
780 struct drv_context *drvc = di->priv;
781 const struct libusb_pollfd **lupfd;
783 uint32_t trigger_offset;
784 uint8_t capturestate;
791 if (devc->dev_state == STOPPING) {
792 /* We've been told to wind up the acquisition. */
793 sr_dbg("Stopping acquisition.");
795 * TODO: Doesn't really cancel pending transfers so they might
796 * come in after SR_DF_END is sent.
798 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
799 for (i = 0; lupfd[i]; i++)
800 sr_source_remove(lupfd[i]->fd);
803 packet.type = SR_DF_END;
804 sr_session_send(sdi, &packet);
806 devc->dev_state = IDLE;
811 /* Always handle pending libusb events. */
812 tv.tv_sec = tv.tv_usec = 0;
813 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
816 if (devc->dev_state == NEW_CAPTURE) {
817 if (dso_capture_start(devc) != SR_OK)
819 if (dso_enable_trigger(devc) != SR_OK)
821 // if (dso_force_trigger(devc) != SR_OK)
823 sr_dbg("Successfully requested next chunk.");
824 devc->dev_state = CAPTURE;
827 if (devc->dev_state != CAPTURE)
830 if ((dso_get_capturestate(devc, &capturestate, &trigger_offset)) != SR_OK)
833 sr_dbg("Capturestate %d.", capturestate);
834 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
835 switch (capturestate) {
837 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
838 devc->capture_empty_count = 0;
839 if (dso_capture_start(devc) != SR_OK)
841 if (dso_enable_trigger(devc) != SR_OK)
843 // if (dso_force_trigger(devc) != SR_OK)
845 sr_dbg("Successfully requested next chunk.");
848 case CAPTURE_FILLING:
851 case CAPTURE_READY_8BIT:
852 /* Remember where in the captured frame the trigger is. */
853 devc->trigger_offset = trigger_offset;
855 num_probes = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
856 /* TODO: Check malloc return value. */
857 devc->framebuf = g_try_malloc(devc->framesize * num_probes * 2);
858 devc->samp_buffered = devc->samp_received = 0;
860 /* Tell the scope to send us the first frame. */
861 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
865 * Don't hit the state machine again until we're done fetching
866 * the data we just told the scope to send.
868 devc->dev_state = FETCH_DATA;
870 /* Tell the frontend a new frame is on the way. */
871 packet.type = SR_DF_FRAME_BEGIN;
872 sr_session_send(sdi, &packet);
874 case CAPTURE_READY_9BIT:
876 sr_err("Not yet supported.");
878 case CAPTURE_TIMEOUT:
879 /* Doesn't matter, we'll try again next time. */
882 sr_dbg("Unknown capture state: %d.", capturestate);
889 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
892 const struct libusb_pollfd **lupfd;
893 struct dev_context *devc;
894 struct drv_context *drvc = di->priv;
897 if (sdi->status != SR_ST_ACTIVE)
901 devc->cb_data = cb_data;
903 if (configure_probes(sdi) != SR_OK) {
904 sr_err("Failed to configure probes.");
908 if (dso_init(devc) != SR_OK)
911 if (dso_capture_start(devc) != SR_OK)
914 devc->dev_state = CAPTURE;
915 lupfd = libusb_get_pollfds(drvc->sr_ctx->libusb_ctx);
916 for (i = 0; lupfd[i]; i++)
917 sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK,
918 handle_event, (void *)sdi);
921 /* Send header packet to the session bus. */
922 std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
927 static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
929 struct dev_context *devc;
933 if (sdi->status != SR_ST_ACTIVE)
937 devc->dev_state = STOPPING;
942 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
943 .name = "hantek-dso",
944 .longname = "Hantek DSO",
947 .cleanup = hw_cleanup,
949 .dev_list = hw_dev_list,
950 .dev_clear = clear_instances,
951 .config_get = config_get,
952 .config_set = config_set,
953 .config_list = config_list,
954 .dev_open = hw_dev_open,
955 .dev_close = hw_dev_close,
956 .dev_acquisition_start = hw_dev_acquisition_start,
957 .dev_acquisition_stop = hw_dev_acquisition_stop,