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/>.
25 #include <sys/types.h>
34 #include <libsigrok/libsigrok.h>
35 #include "libsigrok-internal.h"
38 /* Max time in ms before we want to check on USB events */
39 /* TODO tune this properly */
42 #define NUM_TIMEBASE 10
45 #define NUM_BUFFER_SIZES 2
47 static const uint32_t scanopts[] = {
51 static const uint32_t drvopts[] = {
55 static const uint32_t devopts[] = {
57 SR_CONF_CONN | SR_CONF_GET,
58 SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
59 SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
60 SR_CONF_NUM_HDIV | SR_CONF_GET,
61 SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
62 SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
63 SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET,
64 SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
65 SR_CONF_NUM_VDIV | SR_CONF_GET,
68 static const uint32_t devopts_cg[] = {
69 SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
70 SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
71 SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
74 static const char *channel_names[] = {
78 static const uint64_t buffersizes_32k[] = {
79 (10 * 1024), (32 * 1024),
81 static const uint64_t buffersizes_512k[] = {
82 (10 * 1024), (512 * 1024),
84 static const uint64_t buffersizes_14k[] = {
85 (10 * 1024), (14 * 1024),
88 static const struct dso_profile dev_profiles[] = {
89 { 0x04b4, 0x2090, 0x04b5, 0x2090,
92 "hantek-dso-2090.fw" },
93 { 0x04b4, 0x2150, 0x04b5, 0x2150,
96 "hantek-dso-2150.fw" },
97 { 0x04b4, 0x2250, 0x04b5, 0x2250,
100 "hantek-dso-2250.fw" },
101 { 0x04b4, 0x5200, 0x04b5, 0x5200,
102 "Hantek", "DSO-5200",
104 "hantek-dso-5200.fw" },
105 { 0x04b4, 0x520a, 0x04b5, 0x520a,
106 "Hantek", "DSO-5200A",
108 "hantek-dso-5200A.fw" },
112 static const uint64_t timebases[][2] = {
132 static const uint64_t vdivs[][2] = {
146 static const char *trigger_sources[] = {
151 static const char *trigger_slopes[] = {
155 static const char *coupling[] = {
159 static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
161 struct sr_dev_inst *sdi;
162 struct sr_channel *ch;
163 struct sr_channel_group *cg;
164 struct dev_context *devc;
167 sdi = g_malloc0(sizeof(struct sr_dev_inst));
168 sdi->status = SR_ST_INITIALIZING;
169 sdi->vendor = g_strdup(prof->vendor);
170 sdi->model = g_strdup(prof->model);
173 * Add only the real channels -- EXT isn't a source of data, only
174 * a trigger source internal to the device.
176 for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
177 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
178 cg = g_malloc0(sizeof(struct sr_channel_group));
179 cg->name = g_strdup(channel_names[i]);
180 cg->channels = g_slist_append(cg->channels, ch);
181 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
184 devc = g_malloc0(sizeof(struct dev_context));
185 devc->profile = prof;
186 devc->dev_state = IDLE;
187 devc->timebase = DEFAULT_TIMEBASE;
188 devc->ch_enabled[0] = TRUE;
189 devc->ch_enabled[1] = TRUE;
190 devc->voltage[0] = DEFAULT_VOLTAGE;
191 devc->voltage[1] = DEFAULT_VOLTAGE;
192 devc->coupling[0] = DEFAULT_COUPLING;
193 devc->coupling[1] = DEFAULT_COUPLING;
194 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
195 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
196 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
197 devc->framesize = DEFAULT_FRAMESIZE;
198 devc->triggerslope = SLOPE_POSITIVE;
199 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
200 devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
206 static int configure_channels(const struct sr_dev_inst *sdi)
208 struct dev_context *devc;
209 struct sr_channel *ch;
215 g_slist_free(devc->enabled_channels);
216 devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE;
217 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
220 devc->ch_enabled[0] = ch->enabled;
222 devc->ch_enabled[1] = ch->enabled;
224 devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
230 static void clear_helper(struct dev_context *devc)
232 g_free(devc->triggersource);
233 g_slist_free(devc->enabled_channels);
236 static int dev_clear(const struct sr_dev_driver *di)
238 return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
241 static GSList *scan(struct sr_dev_driver *di, GSList *options)
243 struct drv_context *drvc;
244 struct dev_context *devc;
245 struct sr_dev_inst *sdi;
246 struct sr_usb_dev_inst *usb;
247 struct sr_config *src;
248 const struct dso_profile *prof;
249 GSList *l, *devices, *conn_devices;
250 struct libusb_device_descriptor des;
251 libusb_device **devlist;
254 char connection_id[64];
261 for (l = options; l; l = l->next) {
263 if (src->key == SR_CONF_CONN) {
264 conn = g_variant_get_string(src->data, NULL);
269 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
273 /* Find all Hantek DSO devices and upload firmware to all of them. */
274 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
275 for (i = 0; devlist[i]; i++) {
278 for (l = conn_devices; l; l = l->next) {
280 if (usb->bus == libusb_get_bus_number(devlist[i])
281 && usb->address == libusb_get_device_address(devlist[i]))
285 /* This device matched none of the ones that
286 * matched the conn specification. */
290 libusb_get_device_descriptor(devlist[i], &des);
292 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
295 for (j = 0; dev_profiles[j].orig_vid; j++) {
296 if (des.idVendor == dev_profiles[j].orig_vid
297 && des.idProduct == dev_profiles[j].orig_pid) {
298 /* Device matches the pre-firmware profile. */
299 prof = &dev_profiles[j];
300 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
301 sdi = dso_dev_new(prof);
302 sdi->connection_id = g_strdup(connection_id);
303 devices = g_slist_append(devices, sdi);
305 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
306 USB_CONFIGURATION, prof->firmware) == SR_OK)
307 /* Remember when the firmware on this device was updated */
308 devc->fw_updated = g_get_monotonic_time();
310 sr_err("Firmware upload failed");
311 /* Dummy USB address of 0xff will get overwritten later. */
312 sdi->conn = sr_usb_dev_inst_new(
313 libusb_get_bus_number(devlist[i]), 0xff, NULL);
315 } else if (des.idVendor == dev_profiles[j].fw_vid
316 && des.idProduct == dev_profiles[j].fw_pid) {
317 /* Device matches the post-firmware profile. */
318 prof = &dev_profiles[j];
319 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
320 sdi = dso_dev_new(prof);
321 sdi->connection_id = g_strdup(connection_id);
322 sdi->status = SR_ST_INACTIVE;
323 devices = g_slist_append(devices, sdi);
324 sdi->inst_type = SR_INST_USB;
325 sdi->conn = sr_usb_dev_inst_new(
326 libusb_get_bus_number(devlist[i]),
327 libusb_get_device_address(devlist[i]), NULL);
332 /* not a supported VID/PID */
335 libusb_free_device_list(devlist, 1);
337 return std_scan_complete(di, devices);
340 static int dev_open(struct sr_dev_inst *sdi)
342 struct dev_context *devc;
343 struct sr_usb_dev_inst *usb;
344 int64_t timediff_us, timediff_ms;
351 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
352 * for the FX2 to renumerate.
355 if (devc->fw_updated > 0) {
356 sr_info("Waiting for device to reset.");
357 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
358 g_usleep(300 * 1000);
360 while (timediff_ms < MAX_RENUM_DELAY_MS) {
361 if ((err = dso_open(sdi)) == SR_OK)
363 g_usleep(100 * 1000);
364 timediff_us = g_get_monotonic_time() - devc->fw_updated;
365 timediff_ms = timediff_us / 1000;
366 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
368 sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
374 sr_err("Unable to open device.");
378 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
380 sr_err("Unable to claim interface: %s.",
381 libusb_error_name(err));
388 static int dev_close(struct sr_dev_inst *sdi)
395 static int config_get(uint32_t key, GVariant **data,
396 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
398 struct dev_context *devc;
399 struct sr_usb_dev_inst *usb;
401 const uint64_t *vdiv;
405 case SR_CONF_NUM_HDIV:
406 *data = g_variant_new_int32(NUM_TIMEBASE);
408 case SR_CONF_NUM_VDIV:
409 *data = g_variant_new_int32(NUM_VDIV);
423 if (usb->address == 255)
424 /* Device still needs to re-enumerate after firmware
425 * upload, so we don't know its (future) address. */
427 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
429 case SR_CONF_TIMEBASE:
430 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
431 timebases[devc->timebase][1]);
433 case SR_CONF_BUFFERSIZE:
434 *data = g_variant_new_uint64(devc->framesize);
436 case SR_CONF_TRIGGER_SOURCE:
437 *data = g_variant_new_string(devc->triggersource);
439 case SR_CONF_TRIGGER_SLOPE:
440 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
441 *data = g_variant_new_string(s);
443 case SR_CONF_HORIZ_TRIGGERPOS:
444 *data = g_variant_new_double(devc->triggerposition);
450 if (sdi->channel_groups->data == cg)
452 else if (sdi->channel_groups->next->data == cg)
458 *data = g_variant_new_boolean(devc->filter[ch_idx]);
461 vdiv = vdivs[devc->voltage[ch_idx]];
462 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
464 case SR_CONF_COUPLING:
465 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
473 static int config_set(uint32_t key, GVariant *data,
474 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
476 struct dev_context *devc;
483 case SR_CONF_LIMIT_FRAMES:
484 devc->limit_frames = g_variant_get_uint64(data);
486 case SR_CONF_TRIGGER_SLOPE:
487 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
489 devc->triggerslope = (trigger_slopes[idx][0] == 'r')
490 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
492 case SR_CONF_HORIZ_TRIGGERPOS:
493 tmp_double = g_variant_get_double(data);
494 if (tmp_double < 0.0 || tmp_double > 1.0) {
495 sr_err("Trigger position should be between 0.0 and 1.0.");
498 devc->triggerposition = tmp_double;
500 case SR_CONF_BUFFERSIZE:
501 if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0)
503 devc->framesize = devc->profile->buffersizes[idx];
505 case SR_CONF_TIMEBASE:
506 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0)
508 devc->timebase = idx;
510 case SR_CONF_TRIGGER_SOURCE:
511 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0)
513 devc->triggersource = g_strdup(trigger_sources[idx]);
519 if (sdi->channel_groups->data == cg)
521 else if (sdi->channel_groups->next->data == cg)
527 devc->filter[ch_idx] = g_variant_get_boolean(data);
530 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
532 devc->voltage[ch_idx] = idx;
534 case SR_CONF_COUPLING:
535 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
537 devc->coupling[ch_idx] = idx;
547 static int config_list(uint32_t key, GVariant **data,
548 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
550 struct dev_context *devc;
554 case SR_CONF_SCAN_OPTIONS:
555 case SR_CONF_DEVICE_OPTIONS:
556 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
557 case SR_CONF_BUFFERSIZE:
561 *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES);
563 case SR_CONF_TIMEBASE:
564 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases));
566 case SR_CONF_TRIGGER_SOURCE:
567 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources));
569 case SR_CONF_TRIGGER_SLOPE:
570 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
577 case SR_CONF_DEVICE_OPTIONS:
578 *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
580 case SR_CONF_COUPLING:
581 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
584 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs));
594 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
597 struct sr_datafeed_packet packet;
598 struct sr_datafeed_analog analog;
599 struct sr_analog_encoding encoding;
600 struct sr_analog_meaning meaning;
601 struct sr_analog_spec spec;
602 struct dev_context *devc = sdi->priv;
603 GSList *channels = devc->enabled_channels;
605 packet.type = SR_DF_ANALOG;
606 packet.payload = &analog;
607 /* TODO: support for 5xxx series 9-bit samples */
608 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
609 analog.num_samples = num_samples;
610 analog.meaning->mq = SR_MQ_VOLTAGE;
611 analog.meaning->unit = SR_UNIT_VOLT;
612 analog.meaning->mqflags = 0;
613 /* TODO: Check malloc return value. */
614 analog.data = g_try_malloc(num_samples * sizeof(float));
616 for (int ch = 0; ch < 2; ch++) {
617 if (!devc->ch_enabled[ch])
620 float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8;
621 float vdivlog = log10f(range / 255);
622 int digits = -(int)vdivlog + (vdivlog < 0.0);
623 analog.encoding->digits = digits;
624 analog.spec->spec_digits = digits;
625 analog.meaning->channels = g_slist_append(NULL, channels->data);
627 for (int i = 0; i < num_samples; i++) {
629 * The device always sends data for both channels. If a channel
630 * is disabled, it contains a copy of the enabled channel's
631 * data. However, we only send the requested channels to
634 * Voltage values are encoded as a value 0-255 (0-512 on the
635 * DSO-5200*), where the value is a point in the range
636 * represented by the vdiv setting. There are 8 vertical divs,
637 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
640 /* TODO: Support for DSO-5xxx series 9-bit samples. */
641 ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2;
643 sr_session_send(sdi, &packet);
644 g_slist_free(analog.meaning->channels);
646 channels = channels->next;
652 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
653 * Only channel data comes in asynchronously, and all transfers for this are
654 * queued up beforehand, so this just needs to chuck the incoming data onto
655 * the libsigrok session bus.
657 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
659 struct sr_datafeed_packet packet;
660 struct sr_dev_inst *sdi;
661 struct dev_context *devc;
662 int num_samples, pre;
664 sdi = transfer->user_data;
666 sr_spew("receive_transfer(): status %s received %d bytes.",
667 libusb_error_name(transfer->status), transfer->actual_length);
669 if (transfer->actual_length == 0)
670 /* Nothing to send to the bus. */
673 num_samples = transfer->actual_length / 2;
675 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
676 devc->samp_received + num_samples, devc->framesize);
679 * The device always sends a full frame, but the beginning of the frame
680 * doesn't represent the trigger point. The offset at which the trigger
681 * happened came in with the capture state, so we need to start sending
682 * from there up the session bus. The samples in the frame buffer
683 * before that trigger point came after the end of the device's frame
684 * buffer was reached, and it wrapped around to overwrite up until the
687 if (devc->samp_received < devc->trigger_offset) {
688 /* Trigger point not yet reached. */
689 if (devc->samp_received + num_samples < devc->trigger_offset) {
690 /* The entire chunk is before the trigger point. */
691 memcpy(devc->framebuf + devc->samp_buffered * 2,
692 transfer->buffer, num_samples * 2);
693 devc->samp_buffered += num_samples;
696 * This chunk hits or overruns the trigger point.
697 * Store the part before the trigger fired, and
698 * send the rest up to the session bus.
700 pre = devc->trigger_offset - devc->samp_received;
701 memcpy(devc->framebuf + devc->samp_buffered * 2,
702 transfer->buffer, pre * 2);
703 devc->samp_buffered += pre;
705 /* The rest of this chunk starts with the trigger point. */
706 sr_dbg("Reached trigger point, %d samples buffered.",
707 devc->samp_buffered);
709 /* Avoid the corner case where the chunk ended at
710 * exactly the trigger point. */
711 if (num_samples > pre)
712 send_chunk(sdi, transfer->buffer + pre * 2,
716 /* Already past the trigger point, just send it all out. */
717 send_chunk(sdi, transfer->buffer, num_samples);
720 devc->samp_received += num_samples;
722 /* Everything in this transfer was either copied to the buffer or
723 * sent to the session bus. */
724 g_free(transfer->buffer);
725 libusb_free_transfer(transfer);
727 if (devc->samp_received >= devc->framesize) {
728 /* That was the last chunk in this frame. Send the buffered
729 * pre-trigger samples out now, in one big chunk. */
730 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
731 devc->samp_buffered);
732 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
734 /* Mark the end of this frame. */
735 packet.type = SR_DF_FRAME_END;
736 sr_session_send(sdi, &packet);
738 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
739 /* Terminate session */
740 devc->dev_state = STOPPING;
742 devc->dev_state = NEW_CAPTURE;
747 static int handle_event(int fd, int revents, void *cb_data)
749 const struct sr_dev_inst *sdi;
750 struct sr_datafeed_packet packet;
752 struct sr_dev_driver *di;
753 struct dev_context *devc;
754 struct drv_context *drvc;
756 uint32_t trigger_offset;
757 uint8_t capturestate;
766 if (devc->dev_state == STOPPING) {
767 /* We've been told to wind up the acquisition. */
768 sr_dbg("Stopping acquisition.");
770 * TODO: Doesn't really cancel pending transfers so they might
771 * come in after SR_DF_END is sent.
773 usb_source_remove(sdi->session, drvc->sr_ctx);
775 std_session_send_df_end(sdi);
777 devc->dev_state = IDLE;
782 /* Always handle pending libusb events. */
783 tv.tv_sec = tv.tv_usec = 0;
784 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
787 if (devc->dev_state == NEW_CAPTURE) {
788 if (dso_capture_start(sdi) != SR_OK)
790 if (dso_enable_trigger(sdi) != SR_OK)
792 // if (dso_force_trigger(sdi) != SR_OK)
794 sr_dbg("Successfully requested next chunk.");
795 devc->dev_state = CAPTURE;
798 if (devc->dev_state != CAPTURE)
801 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
804 sr_dbg("Capturestate %d.", capturestate);
805 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
806 switch (capturestate) {
808 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
809 devc->capture_empty_count = 0;
810 if (dso_capture_start(sdi) != SR_OK)
812 if (dso_enable_trigger(sdi) != SR_OK)
814 // if (dso_force_trigger(sdi) != SR_OK)
816 sr_dbg("Successfully requested next chunk.");
819 case CAPTURE_FILLING:
822 case CAPTURE_READY_8BIT:
823 /* Remember where in the captured frame the trigger is. */
824 devc->trigger_offset = trigger_offset;
826 num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1;
827 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
828 devc->samp_buffered = devc->samp_received = 0;
830 /* Tell the scope to send us the first frame. */
831 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
835 * Don't hit the state machine again until we're done fetching
836 * the data we just told the scope to send.
838 devc->dev_state = FETCH_DATA;
840 /* Tell the frontend a new frame is on the way. */
841 packet.type = SR_DF_FRAME_BEGIN;
842 sr_session_send(sdi, &packet);
844 case CAPTURE_READY_9BIT:
846 sr_err("Not yet supported.");
848 case CAPTURE_TIMEOUT:
849 /* Doesn't matter, we'll try again next time. */
852 sr_dbg("Unknown capture state: %d.", capturestate);
859 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
861 struct dev_context *devc;
862 struct sr_dev_driver *di = sdi->driver;
863 struct drv_context *drvc = di->context;
867 if (configure_channels(sdi) != SR_OK) {
868 sr_err("Failed to configure channels.");
872 if (dso_init(sdi) != SR_OK)
875 if (dso_capture_start(sdi) != SR_OK)
878 devc->dev_state = CAPTURE;
879 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
881 std_session_send_df_header(sdi);
886 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
888 struct dev_context *devc;
891 devc->dev_state = STOPPING;
896 static struct sr_dev_driver hantek_dso_driver_info = {
897 .name = "hantek-dso",
898 .longname = "Hantek DSO",
901 .cleanup = std_cleanup,
903 .dev_list = std_dev_list,
904 .dev_clear = dev_clear,
905 .config_get = config_get,
906 .config_set = config_set,
907 .config_list = config_list,
908 .dev_open = dev_open,
909 .dev_close = dev_close,
910 .dev_acquisition_start = dev_acquisition_start,
911 .dev_acquisition_stop = dev_acquisition_stop,
914 SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info);