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_CAPTURE_RATIO | 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_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
66 SR_CONF_NUM_VDIV | SR_CONF_GET,
67 SR_CONF_TRIGGER_LEVEL | SR_CONF_GET | SR_CONF_SET,
70 static const uint32_t devopts_cg[] = {
71 SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
72 SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
73 SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
76 static const char *channel_names[] = {
80 static const uint64_t buffersizes_32k[] = {
81 (10 * 1024), (32 * 1024),
83 static const uint64_t buffersizes_512k[] = {
84 (10 * 1024), (512 * 1024),
86 static const uint64_t buffersizes_14k[] = {
87 (10 * 1024), (14 * 1024),
90 static const struct dso_profile dev_profiles[] = {
91 { 0x04b4, 0x2090, 0x04b5, 0x2090,
94 "hantek-dso-2090.fw" },
95 { 0x04b4, 0x2150, 0x04b5, 0x2150,
98 "hantek-dso-2150.fw" },
99 { 0x04b4, 0x2250, 0x04b5, 0x2250,
100 "Hantek", "DSO-2250",
102 "hantek-dso-2250.fw" },
103 { 0x04b4, 0x5200, 0x04b5, 0x5200,
104 "Hantek", "DSO-5200",
106 "hantek-dso-5200.fw" },
107 { 0x04b4, 0x520a, 0x04b5, 0x520a,
108 "Hantek", "DSO-5200A",
110 "hantek-dso-5200A.fw" },
114 static const uint64_t timebases[][2] = {
134 static const uint64_t samplerates[] = {
151 /* Fast mode not supported yet.
156 static const uint64_t vdivs[][2] = {
170 static const char *trigger_sources[] = {
175 static const char *trigger_slopes[] = {
179 static const char *coupling[] = {
183 static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
185 struct sr_dev_inst *sdi;
186 struct sr_channel *ch;
187 struct sr_channel_group *cg;
188 struct dev_context *devc;
191 sdi = g_malloc0(sizeof(struct sr_dev_inst));
192 sdi->status = SR_ST_INITIALIZING;
193 sdi->vendor = g_strdup(prof->vendor);
194 sdi->model = g_strdup(prof->model);
197 * Add only the real channels -- EXT isn't a source of data, only
198 * a trigger source internal to the device.
200 for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
201 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
202 cg = g_malloc0(sizeof(struct sr_channel_group));
203 cg->name = g_strdup(channel_names[i]);
204 cg->channels = g_slist_append(cg->channels, ch);
205 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
208 devc = g_malloc0(sizeof(struct dev_context));
209 devc->profile = prof;
210 devc->dev_state = IDLE;
211 devc->timebase = DEFAULT_TIMEBASE;
212 devc->samplerate = DEFAULT_SAMPLERATE;
213 devc->ch_enabled[0] = TRUE;
214 devc->ch_enabled[1] = TRUE;
215 devc->voltage[0] = DEFAULT_VOLTAGE;
216 devc->voltage[1] = DEFAULT_VOLTAGE;
217 devc->coupling[0] = DEFAULT_COUPLING;
218 devc->coupling[1] = DEFAULT_COUPLING;
219 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
220 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
221 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
222 devc->framesize = DEFAULT_FRAMESIZE;
223 devc->triggerslope = SLOPE_POSITIVE;
224 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
225 devc->capture_ratio = DEFAULT_CAPTURE_RATIO;
231 static int configure_channels(const struct sr_dev_inst *sdi)
233 struct dev_context *devc;
234 struct sr_channel *ch;
240 g_slist_free(devc->enabled_channels);
241 devc->enabled_channels = NULL;
242 devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE;
243 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
246 devc->ch_enabled[0] = ch->enabled;
248 devc->ch_enabled[1] = ch->enabled;
250 devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
256 static void clear_helper(struct dev_context *devc)
258 g_free(devc->triggersource);
259 g_slist_free(devc->enabled_channels);
262 static int dev_clear(const struct sr_dev_driver *di)
264 return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
267 static GSList *scan(struct sr_dev_driver *di, GSList *options)
269 struct drv_context *drvc;
270 struct dev_context *devc;
271 struct sr_dev_inst *sdi;
272 struct sr_usb_dev_inst *usb;
273 struct sr_config *src;
274 const struct dso_profile *prof;
275 GSList *l, *devices, *conn_devices;
276 struct libusb_device_descriptor des;
277 libusb_device **devlist;
280 char connection_id[64];
287 for (l = options; l; l = l->next) {
289 if (src->key == SR_CONF_CONN) {
290 conn = g_variant_get_string(src->data, NULL);
295 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
299 /* Find all Hantek DSO devices and upload firmware to all of them. */
300 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
301 for (i = 0; devlist[i]; i++) {
304 for (l = conn_devices; l; l = l->next) {
306 if (usb->bus == libusb_get_bus_number(devlist[i])
307 && usb->address == libusb_get_device_address(devlist[i]))
311 /* This device matched none of the ones that
312 * matched the conn specification. */
316 libusb_get_device_descriptor(devlist[i], &des);
318 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
321 for (j = 0; dev_profiles[j].orig_vid; j++) {
322 if (des.idVendor == dev_profiles[j].orig_vid
323 && des.idProduct == dev_profiles[j].orig_pid) {
324 /* Device matches the pre-firmware profile. */
325 prof = &dev_profiles[j];
326 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
327 sdi = dso_dev_new(prof);
328 sdi->connection_id = g_strdup(connection_id);
329 devices = g_slist_append(devices, sdi);
331 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
332 USB_CONFIGURATION, prof->firmware) == SR_OK)
333 /* Remember when the firmware on this device was updated */
334 devc->fw_updated = g_get_monotonic_time();
336 sr_err("Firmware upload failed");
337 /* Dummy USB address of 0xff will get overwritten later. */
338 sdi->conn = sr_usb_dev_inst_new(
339 libusb_get_bus_number(devlist[i]), 0xff, NULL);
341 } else if (des.idVendor == dev_profiles[j].fw_vid
342 && des.idProduct == dev_profiles[j].fw_pid) {
343 /* Device matches the post-firmware profile. */
344 prof = &dev_profiles[j];
345 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
346 sdi = dso_dev_new(prof);
347 sdi->connection_id = g_strdup(connection_id);
348 sdi->status = SR_ST_INACTIVE;
349 devices = g_slist_append(devices, sdi);
350 sdi->inst_type = SR_INST_USB;
351 sdi->conn = sr_usb_dev_inst_new(
352 libusb_get_bus_number(devlist[i]),
353 libusb_get_device_address(devlist[i]), NULL);
358 /* not a supported VID/PID */
361 libusb_free_device_list(devlist, 1);
363 return std_scan_complete(di, devices);
366 static int dev_open(struct sr_dev_inst *sdi)
368 struct dev_context *devc;
369 struct sr_usb_dev_inst *usb;
370 int64_t timediff_us, timediff_ms;
377 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
378 * for the FX2 to renumerate.
381 if (devc->fw_updated > 0) {
382 sr_info("Waiting for device to reset.");
383 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
384 g_usleep(300 * 1000);
386 while (timediff_ms < MAX_RENUM_DELAY_MS) {
387 if ((err = dso_open(sdi)) == SR_OK)
389 g_usleep(100 * 1000);
390 timediff_us = g_get_monotonic_time() - devc->fw_updated;
391 timediff_ms = timediff_us / 1000;
392 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
394 sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
400 sr_err("Unable to open device.");
404 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
406 sr_err("Unable to claim interface: %s.",
407 libusb_error_name(err));
414 static int dev_close(struct sr_dev_inst *sdi)
421 static int config_get(uint32_t key, GVariant **data,
422 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
424 struct dev_context *devc;
425 struct sr_usb_dev_inst *usb;
427 const uint64_t *vdiv;
431 case SR_CONF_NUM_HDIV:
432 *data = g_variant_new_int32(NUM_TIMEBASE);
434 case SR_CONF_NUM_VDIV:
435 *data = g_variant_new_int32(NUM_VDIV);
445 case SR_CONF_TRIGGER_LEVEL:
446 *data = g_variant_new_double(devc->voffset_trigger);
452 if (usb->address == 255)
453 /* Device still needs to re-enumerate after firmware
454 * upload, so we don't know its (future) address. */
456 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
458 case SR_CONF_TIMEBASE:
459 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
460 timebases[devc->timebase][1]);
462 case SR_CONF_SAMPLERATE:
463 *data = g_variant_new_uint64(devc->samplerate);
465 case SR_CONF_BUFFERSIZE:
466 *data = g_variant_new_uint64(devc->framesize);
468 case SR_CONF_TRIGGER_SOURCE:
469 *data = g_variant_new_string(devc->triggersource);
471 case SR_CONF_TRIGGER_SLOPE:
472 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
473 *data = g_variant_new_string(s);
475 case SR_CONF_CAPTURE_RATIO:
476 *data = g_variant_new_uint64(devc->capture_ratio);
482 if (sdi->channel_groups->data == cg)
484 else if (sdi->channel_groups->next->data == cg)
490 *data = g_variant_new_boolean(devc->filter[ch_idx]);
493 vdiv = vdivs[devc->voltage[ch_idx]];
494 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
496 case SR_CONF_COUPLING:
497 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
505 static int config_set(uint32_t key, GVariant *data,
506 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
508 struct dev_context *devc;
516 case SR_CONF_LIMIT_FRAMES:
517 devc->limit_frames = g_variant_get_uint64(data);
519 case SR_CONF_TRIGGER_LEVEL:
520 flt = g_variant_get_double(data);
521 if (flt < 0.0 || flt > 1.0) {
522 sr_err("Trigger level must be in [0.0,1.0].");
525 devc->voffset_trigger = flt;
526 if (dso_set_voffsets(sdi) != SR_OK)
529 case SR_CONF_TRIGGER_SLOPE:
530 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
532 devc->triggerslope = idx;
534 case SR_CONF_CAPTURE_RATIO:
535 rat = g_variant_get_uint64(data);
536 if (rat < 0 || rat > 100) {
537 sr_err("Capture ratio must be in [0,100].");
540 devc->capture_ratio = rat;
542 case SR_CONF_BUFFERSIZE:
543 if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0)
545 devc->framesize = devc->profile->buffersizes[idx];
547 case SR_CONF_TIMEBASE:
548 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0)
550 devc->timebase = idx;
552 case SR_CONF_SAMPLERATE:
553 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(samplerates))) < 0)
555 devc->samplerate = samplerates[idx];
556 if (dso_set_trigger_samplerate(sdi) != SR_OK)
559 case SR_CONF_TRIGGER_SOURCE:
560 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0)
562 devc->triggersource = g_strdup(trigger_sources[idx]);
568 if (sdi->channel_groups->data == cg)
570 else if (sdi->channel_groups->next->data == cg)
576 devc->filter[ch_idx] = g_variant_get_boolean(data);
579 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
581 devc->voltage[ch_idx] = idx;
583 case SR_CONF_COUPLING:
584 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
586 devc->coupling[ch_idx] = idx;
596 static int config_list(uint32_t key, GVariant **data,
597 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
599 struct dev_context *devc;
603 case SR_CONF_SCAN_OPTIONS:
604 case SR_CONF_DEVICE_OPTIONS:
605 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
606 case SR_CONF_BUFFERSIZE:
610 *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES);
612 case SR_CONF_SAMPLERATE:
613 *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
615 case SR_CONF_TIMEBASE:
616 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases));
618 case SR_CONF_TRIGGER_SOURCE:
619 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources));
621 case SR_CONF_TRIGGER_SLOPE:
622 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
629 case SR_CONF_DEVICE_OPTIONS:
630 *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
632 case SR_CONF_COUPLING:
633 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
636 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs));
646 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
649 struct sr_datafeed_packet packet;
650 struct sr_datafeed_analog analog;
651 struct sr_analog_encoding encoding;
652 struct sr_analog_meaning meaning;
653 struct sr_analog_spec spec;
654 struct dev_context *devc = sdi->priv;
655 GSList *channels = devc->enabled_channels;
657 packet.type = SR_DF_ANALOG;
658 packet.payload = &analog;
659 /* TODO: support for 5xxx series 9-bit samples */
660 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
661 analog.num_samples = num_samples;
662 analog.meaning->mq = SR_MQ_VOLTAGE;
663 analog.meaning->unit = SR_UNIT_VOLT;
664 analog.meaning->mqflags = 0;
665 /* TODO: Check malloc return value. */
666 analog.data = g_try_malloc(num_samples * sizeof(float));
668 for (int ch = 0; ch < NUM_CHANNELS; ch++) {
669 if (!devc->ch_enabled[ch])
672 float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8;
673 float vdivlog = log10f(range / 255);
674 int digits = -(int)vdivlog + (vdivlog < 0.0);
675 analog.encoding->digits = digits;
676 analog.spec->spec_digits = digits;
677 analog.meaning->channels = g_slist_append(NULL, channels->data);
679 for (int i = 0; i < num_samples; i++) {
681 * The device always sends data for both channels. If a channel
682 * is disabled, it contains a copy of the enabled channel's
683 * data. However, we only send the requested channels to
686 * Voltage values are encoded as a value 0-255 (0-512 on the
687 * DSO-5200*), where the value is a point in the range
688 * represented by the vdiv setting. There are 8 vertical divs,
689 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
692 /* TODO: Support for DSO-5xxx series 9-bit samples. */
693 ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2;
695 sr_session_send(sdi, &packet);
696 g_slist_free(analog.meaning->channels);
698 channels = channels->next;
704 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
705 * Only channel data comes in asynchronously, and all transfers for this are
706 * queued up beforehand, so this just needs to chuck the incoming data onto
707 * the libsigrok session bus.
709 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
711 struct sr_datafeed_packet packet;
712 struct sr_dev_inst *sdi;
713 struct dev_context *devc;
714 int num_samples, pre;
716 sdi = transfer->user_data;
718 sr_spew("receive_transfer(): status %s received %d bytes.",
719 libusb_error_name(transfer->status), transfer->actual_length);
721 if (transfer->actual_length == 0)
722 /* Nothing to send to the bus. */
725 num_samples = transfer->actual_length / 2;
727 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
728 devc->samp_received + num_samples, devc->framesize);
731 * The device always sends a full frame, but the beginning of the frame
732 * doesn't represent the trigger point. The offset at which the trigger
733 * happened came in with the capture state, so we need to start sending
734 * from there up the session bus. The samples in the frame buffer
735 * before that trigger point came after the end of the device's frame
736 * buffer was reached, and it wrapped around to overwrite up until the
739 if (devc->samp_received < devc->trigger_offset) {
740 /* Trigger point not yet reached. */
741 if (devc->samp_received + num_samples < devc->trigger_offset) {
742 /* The entire chunk is before the trigger point. */
743 memcpy(devc->framebuf + devc->samp_buffered * 2,
744 transfer->buffer, num_samples * 2);
745 devc->samp_buffered += num_samples;
748 * This chunk hits or overruns the trigger point.
749 * Store the part before the trigger fired, and
750 * send the rest up to the session bus.
752 pre = devc->trigger_offset - devc->samp_received;
753 memcpy(devc->framebuf + devc->samp_buffered * 2,
754 transfer->buffer, pre * 2);
755 devc->samp_buffered += pre;
757 /* The rest of this chunk starts with the trigger point. */
758 sr_dbg("Reached trigger point, %d samples buffered.",
759 devc->samp_buffered);
761 /* Avoid the corner case where the chunk ended at
762 * exactly the trigger point. */
763 if (num_samples > pre)
764 send_chunk(sdi, transfer->buffer + pre * 2,
768 /* Already past the trigger point, just send it all out. */
769 send_chunk(sdi, transfer->buffer, num_samples);
772 devc->samp_received += num_samples;
774 /* Everything in this transfer was either copied to the buffer or
775 * sent to the session bus. */
776 g_free(transfer->buffer);
777 libusb_free_transfer(transfer);
779 if (devc->samp_received >= devc->framesize) {
780 /* That was the last chunk in this frame. Send the buffered
781 * pre-trigger samples out now, in one big chunk. */
782 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
783 devc->samp_buffered);
784 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
785 g_free(devc->framebuf);
786 devc->framebuf = NULL;
788 /* Mark the end of this frame. */
789 packet.type = SR_DF_FRAME_END;
790 sr_session_send(sdi, &packet);
792 if (devc->limit_frames && ++devc->num_frames >= devc->limit_frames) {
793 /* Terminate session */
794 devc->dev_state = STOPPING;
796 devc->dev_state = NEW_CAPTURE;
801 static int handle_event(int fd, int revents, void *cb_data)
803 const struct sr_dev_inst *sdi;
804 struct sr_datafeed_packet packet;
806 struct sr_dev_driver *di;
807 struct dev_context *devc;
808 struct drv_context *drvc;
810 uint32_t trigger_offset;
811 uint8_t capturestate;
820 if (devc->dev_state == STOPPING) {
821 /* We've been told to wind up the acquisition. */
822 sr_dbg("Stopping acquisition.");
824 * TODO: Doesn't really cancel pending transfers so they might
825 * come in after SR_DF_END is sent.
827 usb_source_remove(sdi->session, drvc->sr_ctx);
829 std_session_send_df_end(sdi);
831 devc->dev_state = IDLE;
836 /* Always handle pending libusb events. */
837 tv.tv_sec = tv.tv_usec = 0;
838 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
841 if (devc->dev_state == NEW_CAPTURE) {
842 if (dso_capture_start(sdi) != SR_OK)
844 if (dso_enable_trigger(sdi) != SR_OK)
846 // if (dso_force_trigger(sdi) != SR_OK)
848 sr_dbg("Successfully requested next chunk.");
849 devc->dev_state = CAPTURE;
852 if (devc->dev_state != CAPTURE)
855 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
858 sr_dbg("Capturestate %d.", capturestate);
859 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
860 switch (capturestate) {
862 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
863 devc->capture_empty_count = 0;
864 if (dso_capture_start(sdi) != SR_OK)
866 if (dso_enable_trigger(sdi) != SR_OK)
868 // if (dso_force_trigger(sdi) != SR_OK)
870 sr_dbg("Successfully requested next chunk.");
873 case CAPTURE_FILLING:
876 case CAPTURE_READY_8BIT:
877 case CAPTURE_READY_2250:
878 /* Remember where in the captured frame the trigger is. */
879 devc->trigger_offset = trigger_offset;
881 num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1;
882 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
883 devc->samp_buffered = devc->samp_received = 0;
885 /* Tell the scope to send us the first frame. */
886 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
890 * Don't hit the state machine again until we're done fetching
891 * the data we just told the scope to send.
893 devc->dev_state = FETCH_DATA;
895 /* Tell the frontend a new frame is on the way. */
896 packet.type = SR_DF_FRAME_BEGIN;
897 sr_session_send(sdi, &packet);
899 case CAPTURE_READY_9BIT:
901 sr_err("Not yet supported.");
903 case CAPTURE_TIMEOUT:
904 /* Doesn't matter, we'll try again next time. */
907 sr_dbg("Unknown capture state: %d.", capturestate);
914 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
916 struct dev_context *devc;
917 struct sr_dev_driver *di = sdi->driver;
918 struct drv_context *drvc = di->context;
922 if (configure_channels(sdi) != SR_OK) {
923 sr_err("Failed to configure channels.");
927 if (dso_init(sdi) != SR_OK)
930 if (dso_capture_start(sdi) != SR_OK)
933 devc->dev_state = CAPTURE;
934 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
936 std_session_send_df_header(sdi);
941 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
943 struct dev_context *devc;
946 devc->dev_state = STOPPING;
947 devc->num_frames = 0;
952 static struct sr_dev_driver hantek_dso_driver_info = {
953 .name = "hantek-dso",
954 .longname = "Hantek DSO",
957 .cleanup = std_cleanup,
959 .dev_list = std_dev_list,
960 .dev_clear = dev_clear,
961 .config_get = config_get,
962 .config_set = config_set,
963 .config_list = config_list,
964 .dev_open = dev_open,
965 .dev_close = dev_close,
966 .dev_acquisition_start = dev_acquisition_start,
967 .dev_acquisition_stop = dev_acquisition_stop,
970 SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info);