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_GET | 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[] = {
171 "CH1", "CH2", "EXT", "forced"
174 static const char *trigger_slopes[] = {
178 static const char *coupling[] = {
182 static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
184 struct sr_dev_inst *sdi;
185 struct sr_channel *ch;
186 struct sr_channel_group *cg;
187 struct dev_context *devc;
190 sdi = g_malloc0(sizeof(struct sr_dev_inst));
191 sdi->status = SR_ST_INITIALIZING;
192 sdi->vendor = g_strdup(prof->vendor);
193 sdi->model = g_strdup(prof->model);
196 * Add only the real channels -- EXT isn't a source of data, only
197 * a trigger source internal to the device.
199 for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
200 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
201 cg = sr_channel_group_new(sdi, channel_names[i], NULL);
202 cg->channels = g_slist_append(cg->channels, ch);
205 devc = g_malloc0(sizeof(struct dev_context));
206 devc->profile = prof;
207 devc->dev_state = IDLE;
208 devc->timebase = DEFAULT_TIMEBASE;
209 devc->samplerate = DEFAULT_SAMPLERATE;
210 devc->ch_enabled[0] = TRUE;
211 devc->ch_enabled[1] = TRUE;
212 devc->voltage[0] = DEFAULT_VOLTAGE;
213 devc->voltage[1] = DEFAULT_VOLTAGE;
214 devc->coupling[0] = DEFAULT_COUPLING;
215 devc->coupling[1] = DEFAULT_COUPLING;
216 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
217 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
218 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
219 devc->framesize = DEFAULT_FRAMESIZE;
220 devc->triggerslope = SLOPE_POSITIVE;
221 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
222 devc->capture_ratio = DEFAULT_CAPTURE_RATIO;
228 static int configure_channels(const struct sr_dev_inst *sdi)
230 struct dev_context *devc;
231 struct sr_channel *ch;
237 g_slist_free(devc->enabled_channels);
238 devc->enabled_channels = NULL;
239 devc->ch_enabled[0] = devc->ch_enabled[1] = FALSE;
240 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
243 devc->ch_enabled[0] = ch->enabled;
245 devc->ch_enabled[1] = ch->enabled;
247 devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
253 static void clear_helper(struct dev_context *devc)
255 g_free(devc->triggersource);
256 g_slist_free(devc->enabled_channels);
259 static int dev_clear(const struct sr_dev_driver *di)
261 return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
264 static GSList *scan(struct sr_dev_driver *di, GSList *options)
266 struct drv_context *drvc;
267 struct dev_context *devc;
268 struct sr_dev_inst *sdi;
269 struct sr_usb_dev_inst *usb;
270 struct sr_config *src;
271 const struct dso_profile *prof;
272 GSList *l, *devices, *conn_devices;
273 struct libusb_device_descriptor des;
274 libusb_device **devlist;
277 char connection_id[64];
284 for (l = options; l; l = l->next) {
286 if (src->key == SR_CONF_CONN) {
287 conn = g_variant_get_string(src->data, NULL);
292 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
296 /* Find all Hantek DSO devices and upload firmware to all of them. */
297 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
298 for (i = 0; devlist[i]; i++) {
301 for (l = conn_devices; l; l = l->next) {
303 if (usb->bus == libusb_get_bus_number(devlist[i])
304 && usb->address == libusb_get_device_address(devlist[i]))
308 /* This device matched none of the ones that
309 * matched the conn specification. */
313 libusb_get_device_descriptor(devlist[i], &des);
315 if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
319 for (j = 0; dev_profiles[j].orig_vid; j++) {
320 if (des.idVendor == dev_profiles[j].orig_vid
321 && des.idProduct == dev_profiles[j].orig_pid) {
322 /* Device matches the pre-firmware profile. */
323 prof = &dev_profiles[j];
324 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
325 sdi = dso_dev_new(prof);
326 sdi->connection_id = g_strdup(connection_id);
327 devices = g_slist_append(devices, sdi);
329 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
330 USB_CONFIGURATION, prof->firmware) == SR_OK) {
331 /* Remember when the firmware on this device was updated */
332 devc->fw_updated = g_get_monotonic_time();
334 sr_err("Firmware upload failed, name %s", prof->firmware);
336 /* Dummy USB address of 0xff will get overwritten later. */
337 sdi->conn = sr_usb_dev_inst_new(
338 libusb_get_bus_number(devlist[i]), 0xff, NULL);
340 } else if (des.idVendor == dev_profiles[j].fw_vid
341 && des.idProduct == dev_profiles[j].fw_pid) {
342 /* Device matches the post-firmware profile. */
343 prof = &dev_profiles[j];
344 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
345 sdi = dso_dev_new(prof);
346 sdi->connection_id = g_strdup(connection_id);
347 sdi->status = SR_ST_INACTIVE;
348 devices = g_slist_append(devices, sdi);
349 sdi->inst_type = SR_INST_USB;
350 sdi->conn = sr_usb_dev_inst_new(
351 libusb_get_bus_number(devlist[i]),
352 libusb_get_device_address(devlist[i]), NULL);
357 /* not a supported VID/PID */
360 libusb_free_device_list(devlist, 1);
362 return std_scan_complete(di, devices);
365 static int dev_open(struct sr_dev_inst *sdi)
367 struct dev_context *devc;
368 struct sr_usb_dev_inst *usb;
369 int64_t timediff_us, timediff_ms;
376 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
377 * for the FX2 to renumerate.
380 if (devc->fw_updated > 0) {
381 sr_info("Waiting for device to reset.");
382 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
383 g_usleep(300 * 1000);
385 while (timediff_ms < MAX_RENUM_DELAY_MS) {
386 if ((err = dso_open(sdi)) == SR_OK)
388 g_usleep(100 * 1000);
389 timediff_us = g_get_monotonic_time() - devc->fw_updated;
390 timediff_ms = timediff_us / 1000;
391 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
393 sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
399 sr_err("Unable to open device.");
403 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
405 sr_err("Unable to claim interface: %s.",
406 libusb_error_name(err));
413 static int dev_close(struct sr_dev_inst *sdi)
420 static int config_get(uint32_t key, GVariant **data,
421 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
423 struct dev_context *devc;
424 struct sr_usb_dev_inst *usb;
426 const uint64_t *vdiv;
430 case SR_CONF_NUM_HDIV:
431 *data = g_variant_new_int32(NUM_TIMEBASE);
433 case SR_CONF_NUM_VDIV:
434 *data = g_variant_new_int32(NUM_VDIV);
444 case SR_CONF_TRIGGER_LEVEL:
445 *data = g_variant_new_double(devc->voffset_trigger);
451 if (usb->address == 255)
452 /* Device still needs to re-enumerate after firmware
453 * upload, so we don't know its (future) address. */
455 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
457 case SR_CONF_TIMEBASE:
458 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
459 timebases[devc->timebase][1]);
461 case SR_CONF_SAMPLERATE:
462 *data = g_variant_new_uint64(devc->samplerate);
464 case SR_CONF_BUFFERSIZE:
465 *data = g_variant_new_uint64(devc->framesize);
467 case SR_CONF_TRIGGER_SOURCE:
468 *data = g_variant_new_string(devc->triggersource);
470 case SR_CONF_TRIGGER_SLOPE:
471 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
472 *data = g_variant_new_string(s);
474 case SR_CONF_CAPTURE_RATIO:
475 *data = g_variant_new_uint64(devc->capture_ratio);
477 case SR_CONF_LIMIT_FRAMES:
478 *data = g_variant_new_uint64(devc->limit_frames);
484 if (sdi->channel_groups->data == cg)
486 else if (sdi->channel_groups->next->data == cg)
492 *data = g_variant_new_boolean(devc->filter[ch_idx]);
495 vdiv = vdivs[devc->voltage[ch_idx]];
496 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
498 case SR_CONF_COUPLING:
499 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
507 static int config_set(uint32_t key, GVariant *data,
508 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
510 struct dev_context *devc;
517 case SR_CONF_LIMIT_FRAMES:
518 devc->limit_frames = g_variant_get_uint64(data);
520 case SR_CONF_TRIGGER_LEVEL:
521 flt = g_variant_get_double(data);
522 if (flt < 0.0 || flt > 1.0) {
523 sr_err("Trigger level must be in [0.0,1.0].");
526 devc->voffset_trigger = flt;
527 if (dso_set_voffsets(sdi) != SR_OK)
530 case SR_CONF_TRIGGER_SLOPE:
531 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_slopes))) < 0)
533 devc->triggerslope = idx;
535 case SR_CONF_CAPTURE_RATIO:
536 devc->capture_ratio = g_variant_get_uint64(data);
538 case SR_CONF_BUFFERSIZE:
539 if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0)
541 devc->framesize = devc->profile->buffersizes[idx];
543 case SR_CONF_TIMEBASE:
544 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0)
546 devc->timebase = idx;
548 case SR_CONF_SAMPLERATE:
549 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(samplerates))) < 0)
551 devc->samplerate = samplerates[idx];
552 if (dso_set_trigger_samplerate(sdi) != SR_OK)
555 case SR_CONF_TRIGGER_SOURCE:
556 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0)
558 devc->triggersource = g_strdup(trigger_sources[idx]);
564 if (sdi->channel_groups->data == cg)
566 else if (sdi->channel_groups->next->data == cg)
572 devc->filter[ch_idx] = g_variant_get_boolean(data);
575 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
577 devc->voltage[ch_idx] = idx;
579 case SR_CONF_COUPLING:
580 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
582 devc->coupling[ch_idx] = idx;
592 static int config_list(uint32_t key, GVariant **data,
593 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
595 struct dev_context *devc;
599 case SR_CONF_SCAN_OPTIONS:
600 case SR_CONF_DEVICE_OPTIONS:
601 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
602 case SR_CONF_BUFFERSIZE:
606 *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES);
608 case SR_CONF_SAMPLERATE:
609 *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
611 case SR_CONF_TIMEBASE:
612 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases));
614 case SR_CONF_TRIGGER_SOURCE:
615 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources));
617 case SR_CONF_TRIGGER_SLOPE:
618 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
625 case SR_CONF_DEVICE_OPTIONS:
626 *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
628 case SR_CONF_COUPLING:
629 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
632 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs));
642 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
645 struct sr_datafeed_packet packet;
646 struct sr_datafeed_analog analog;
647 struct sr_analog_encoding encoding;
648 struct sr_analog_meaning meaning;
649 struct sr_analog_spec spec;
650 struct dev_context *devc = sdi->priv;
651 GSList *channels = devc->enabled_channels;
653 packet.type = SR_DF_ANALOG;
654 packet.payload = &analog;
655 /* TODO: support for 5xxx series 9-bit samples */
656 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
657 analog.num_samples = num_samples;
658 analog.meaning->mq = SR_MQ_VOLTAGE;
659 analog.meaning->unit = SR_UNIT_VOLT;
660 analog.meaning->mqflags = 0;
661 /* TODO: Check malloc return value. */
662 analog.data = g_try_malloc(num_samples * sizeof(float));
664 for (int ch = 0; ch < NUM_CHANNELS; ch++) {
665 if (!devc->ch_enabled[ch])
668 float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8;
669 float vdivlog = log10f(range / 255);
670 int digits = -(int)vdivlog + (vdivlog < 0.0);
671 analog.encoding->digits = digits;
672 analog.spec->spec_digits = digits;
673 analog.meaning->channels = g_slist_append(NULL, channels->data);
675 for (int i = 0; i < num_samples; i++) {
677 * The device always sends data for both channels. If a channel
678 * is disabled, it contains a copy of the enabled channel's
679 * data. However, we only send the requested channels to
682 * Voltage values are encoded as a value 0-255 (0-512 on the
683 * DSO-5200*), where the value is a point in the range
684 * represented by the vdiv setting. There are 8 vertical divs,
685 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
688 /* TODO: Support for DSO-5xxx series 9-bit samples. */
689 ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2;
691 sr_session_send(sdi, &packet);
692 g_slist_free(analog.meaning->channels);
694 channels = channels->next;
700 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
701 * Only channel data comes in asynchronously, and all transfers for this are
702 * queued up beforehand, so this just needs to chuck the incoming data onto
703 * the libsigrok session bus.
705 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
707 struct sr_dev_inst *sdi;
708 struct dev_context *devc;
709 int num_samples, pre;
711 sdi = transfer->user_data;
713 sr_spew("receive_transfer(): status %s received %d bytes.",
714 libusb_error_name(transfer->status), transfer->actual_length);
716 if (transfer->actual_length == 0)
717 /* Nothing to send to the bus. */
720 num_samples = transfer->actual_length / 2;
722 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
723 devc->samp_received + num_samples, devc->framesize);
726 * The device always sends a full frame, but the beginning of the frame
727 * doesn't represent the trigger point. The offset at which the trigger
728 * happened came in with the capture state, so we need to start sending
729 * from there up the session bus. The samples in the frame buffer
730 * before that trigger point came after the end of the device's frame
731 * buffer was reached, and it wrapped around to overwrite up until the
734 if (devc->samp_received < devc->trigger_offset) {
735 /* Trigger point not yet reached. */
736 if (devc->samp_received + num_samples < devc->trigger_offset) {
737 /* The entire chunk is before the trigger point. */
738 memcpy(devc->framebuf + devc->samp_buffered * 2,
739 transfer->buffer, num_samples * 2);
740 devc->samp_buffered += num_samples;
743 * This chunk hits or overruns the trigger point.
744 * Store the part before the trigger fired, and
745 * send the rest up to the session bus.
747 pre = devc->trigger_offset - devc->samp_received;
748 memcpy(devc->framebuf + devc->samp_buffered * 2,
749 transfer->buffer, pre * 2);
750 devc->samp_buffered += pre;
752 /* The rest of this chunk starts with the trigger point. */
753 sr_dbg("Reached trigger point, %d samples buffered.",
754 devc->samp_buffered);
756 /* Avoid the corner case where the chunk ended at
757 * exactly the trigger point. */
758 if (num_samples > pre)
759 send_chunk(sdi, transfer->buffer + pre * 2,
763 /* Already past the trigger point, just send it all out. */
764 send_chunk(sdi, transfer->buffer, num_samples);
767 devc->samp_received += num_samples;
769 /* Everything in this transfer was either copied to the buffer or
770 * sent to the session bus. */
771 g_free(transfer->buffer);
772 libusb_free_transfer(transfer);
774 if (devc->samp_received >= devc->framesize) {
775 /* That was the last chunk in this frame. Send the buffered
776 * pre-trigger samples out now, in one big chunk. */
777 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
778 devc->samp_buffered);
779 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
780 g_free(devc->framebuf);
781 devc->framebuf = NULL;
783 /* Mark the end of this frame. */
784 std_session_send_df_frame_end(sdi);
786 if (devc->limit_frames && ++devc->num_frames >= devc->limit_frames) {
787 /* Terminate session */
788 devc->dev_state = STOPPING;
790 devc->dev_state = NEW_CAPTURE;
795 static int handle_event(int fd, int revents, void *cb_data)
797 const struct sr_dev_inst *sdi;
799 struct sr_dev_driver *di;
800 struct dev_context *devc;
801 struct drv_context *drvc;
803 uint32_t trigger_offset;
804 uint8_t capturestate;
813 if (devc->dev_state == STOPPING) {
814 /* We've been told to wind up the acquisition. */
815 sr_dbg("Stopping acquisition.");
817 * TODO: Doesn't really cancel pending transfers so they might
818 * come in after SR_DF_END is sent.
820 usb_source_remove(sdi->session, drvc->sr_ctx);
822 std_session_send_df_end(sdi);
824 devc->dev_state = IDLE;
829 /* Always handle pending libusb events. */
830 tv.tv_sec = tv.tv_usec = 0;
831 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
834 if (devc->dev_state == NEW_CAPTURE) {
835 if (dso_capture_start(sdi) != SR_OK)
837 if (dso_enable_trigger(sdi) != SR_OK)
839 // if (dso_force_trigger(sdi) != SR_OK)
841 sr_dbg("Successfully requested next chunk.");
842 devc->dev_state = CAPTURE;
845 if (devc->dev_state != CAPTURE)
848 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
851 sr_dbg("Capturestate %d.", capturestate);
852 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
853 switch (capturestate) {
855 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
856 devc->capture_empty_count = 0;
857 if (dso_capture_start(sdi) != SR_OK)
859 if (dso_enable_trigger(sdi) != SR_OK)
861 if (!strcmp("forced", devc->triggersource)) {
862 if (dso_force_trigger(sdi) != SR_OK)
865 sr_dbg("Successfully requested next chunk.");
868 case CAPTURE_FILLING:
871 case CAPTURE_READY_8BIT:
872 case CAPTURE_READY_2250:
873 /* Remember where in the captured frame the trigger is. */
874 devc->trigger_offset = trigger_offset;
876 num_channels = (devc->ch_enabled[0] && devc->ch_enabled[1]) ? 2 : 1;
877 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
878 devc->samp_buffered = devc->samp_received = 0;
880 /* Tell the scope to send us the first frame. */
881 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
885 * Don't hit the state machine again until we're done fetching
886 * the data we just told the scope to send.
888 devc->dev_state = FETCH_DATA;
890 /* Tell the frontend a new frame is on the way. */
891 std_session_send_df_frame_begin(sdi);
893 case CAPTURE_READY_9BIT:
895 sr_err("Not yet supported.");
897 case CAPTURE_TIMEOUT:
898 /* Doesn't matter, we'll try again next time. */
901 sr_dbg("Unknown capture state: %d.", capturestate);
908 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
910 struct dev_context *devc;
911 struct sr_dev_driver *di = sdi->driver;
912 struct drv_context *drvc = di->context;
916 if (configure_channels(sdi) != SR_OK) {
917 sr_err("Failed to configure channels.");
921 if (dso_init(sdi) != SR_OK)
924 if (dso_capture_start(sdi) != SR_OK)
927 devc->dev_state = CAPTURE;
928 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
930 std_session_send_df_header(sdi);
935 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
937 struct dev_context *devc;
940 devc->dev_state = STOPPING;
941 devc->num_frames = 0;
946 static struct sr_dev_driver hantek_dso_driver_info = {
947 .name = "hantek-dso",
948 .longname = "Hantek DSO",
951 .cleanup = std_cleanup,
953 .dev_list = std_dev_list,
954 .dev_clear = dev_clear,
955 .config_get = config_get,
956 .config_set = config_set,
957 .config_list = config_list,
958 .dev_open = dev_open,
959 .dev_close = dev_close,
960 .dev_acquisition_start = dev_acquisition_start,
961 .dev_acquisition_stop = dev_acquisition_stop,
964 SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info);