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 if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
322 for (j = 0; dev_profiles[j].orig_vid; j++) {
323 if (des.idVendor == dev_profiles[j].orig_vid
324 && des.idProduct == dev_profiles[j].orig_pid) {
325 /* Device matches the pre-firmware profile. */
326 prof = &dev_profiles[j];
327 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
328 sdi = dso_dev_new(prof);
329 sdi->connection_id = g_strdup(connection_id);
330 devices = g_slist_append(devices, sdi);
332 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
333 USB_CONFIGURATION, prof->firmware) == SR_OK)
334 /* Remember when the firmware on this device was updated */
335 devc->fw_updated = g_get_monotonic_time();
337 sr_err("Firmware upload failed");
338 /* Dummy USB address of 0xff will get overwritten later. */
339 sdi->conn = sr_usb_dev_inst_new(
340 libusb_get_bus_number(devlist[i]), 0xff, NULL);
342 } else if (des.idVendor == dev_profiles[j].fw_vid
343 && des.idProduct == dev_profiles[j].fw_pid) {
344 /* Device matches the post-firmware profile. */
345 prof = &dev_profiles[j];
346 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
347 sdi = dso_dev_new(prof);
348 sdi->connection_id = g_strdup(connection_id);
349 sdi->status = SR_ST_INACTIVE;
350 devices = g_slist_append(devices, sdi);
351 sdi->inst_type = SR_INST_USB;
352 sdi->conn = sr_usb_dev_inst_new(
353 libusb_get_bus_number(devlist[i]),
354 libusb_get_device_address(devlist[i]), NULL);
359 /* not a supported VID/PID */
362 libusb_free_device_list(devlist, 1);
364 return std_scan_complete(di, devices);
367 static int dev_open(struct sr_dev_inst *sdi)
369 struct dev_context *devc;
370 struct sr_usb_dev_inst *usb;
371 int64_t timediff_us, timediff_ms;
378 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
379 * for the FX2 to renumerate.
382 if (devc->fw_updated > 0) {
383 sr_info("Waiting for device to reset.");
384 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
385 g_usleep(300 * 1000);
387 while (timediff_ms < MAX_RENUM_DELAY_MS) {
388 if ((err = dso_open(sdi)) == SR_OK)
390 g_usleep(100 * 1000);
391 timediff_us = g_get_monotonic_time() - devc->fw_updated;
392 timediff_ms = timediff_us / 1000;
393 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
395 sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
401 sr_err("Unable to open device.");
405 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
407 sr_err("Unable to claim interface: %s.",
408 libusb_error_name(err));
415 static int dev_close(struct sr_dev_inst *sdi)
422 static int config_get(uint32_t key, GVariant **data,
423 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
425 struct dev_context *devc;
426 struct sr_usb_dev_inst *usb;
428 const uint64_t *vdiv;
432 case SR_CONF_NUM_HDIV:
433 *data = g_variant_new_int32(NUM_TIMEBASE);
435 case SR_CONF_NUM_VDIV:
436 *data = g_variant_new_int32(NUM_VDIV);
446 case SR_CONF_TRIGGER_LEVEL:
447 *data = g_variant_new_double(devc->voffset_trigger);
453 if (usb->address == 255)
454 /* Device still needs to re-enumerate after firmware
455 * upload, so we don't know its (future) address. */
457 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
459 case SR_CONF_TIMEBASE:
460 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
461 timebases[devc->timebase][1]);
463 case SR_CONF_SAMPLERATE:
464 *data = g_variant_new_uint64(devc->samplerate);
466 case SR_CONF_BUFFERSIZE:
467 *data = g_variant_new_uint64(devc->framesize);
469 case SR_CONF_TRIGGER_SOURCE:
470 *data = g_variant_new_string(devc->triggersource);
472 case SR_CONF_TRIGGER_SLOPE:
473 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
474 *data = g_variant_new_string(s);
476 case SR_CONF_CAPTURE_RATIO:
477 *data = g_variant_new_uint64(devc->capture_ratio);
483 if (sdi->channel_groups->data == cg)
485 else if (sdi->channel_groups->next->data == cg)
491 *data = g_variant_new_boolean(devc->filter[ch_idx]);
494 vdiv = vdivs[devc->voltage[ch_idx]];
495 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
497 case SR_CONF_COUPLING:
498 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
506 static int config_set(uint32_t key, GVariant *data,
507 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
509 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 devc->capture_ratio = g_variant_get_uint64(data);
537 case SR_CONF_BUFFERSIZE:
538 if ((idx = std_u64_idx(data, devc->profile->buffersizes, NUM_BUFFER_SIZES)) < 0)
540 devc->framesize = devc->profile->buffersizes[idx];
542 case SR_CONF_TIMEBASE:
543 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(timebases))) < 0)
545 devc->timebase = idx;
547 case SR_CONF_SAMPLERATE:
548 if ((idx = std_u64_idx(data, ARRAY_AND_SIZE(samplerates))) < 0)
550 devc->samplerate = samplerates[idx];
551 if (dso_set_trigger_samplerate(sdi) != SR_OK)
554 case SR_CONF_TRIGGER_SOURCE:
555 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(trigger_sources))) < 0)
557 devc->triggersource = g_strdup(trigger_sources[idx]);
563 if (sdi->channel_groups->data == cg)
565 else if (sdi->channel_groups->next->data == cg)
571 devc->filter[ch_idx] = g_variant_get_boolean(data);
574 if ((idx = std_u64_tuple_idx(data, ARRAY_AND_SIZE(vdivs))) < 0)
576 devc->voltage[ch_idx] = idx;
578 case SR_CONF_COUPLING:
579 if ((idx = std_str_idx(data, ARRAY_AND_SIZE(coupling))) < 0)
581 devc->coupling[ch_idx] = idx;
591 static int config_list(uint32_t key, GVariant **data,
592 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
594 struct dev_context *devc;
598 case SR_CONF_SCAN_OPTIONS:
599 case SR_CONF_DEVICE_OPTIONS:
600 return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
601 case SR_CONF_BUFFERSIZE:
605 *data = std_gvar_array_u64(devc->profile->buffersizes, NUM_BUFFER_SIZES);
607 case SR_CONF_SAMPLERATE:
608 *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
610 case SR_CONF_TIMEBASE:
611 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(timebases));
613 case SR_CONF_TRIGGER_SOURCE:
614 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_sources));
616 case SR_CONF_TRIGGER_SLOPE:
617 *data = g_variant_new_strv(ARRAY_AND_SIZE(trigger_slopes));
624 case SR_CONF_DEVICE_OPTIONS:
625 *data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
627 case SR_CONF_COUPLING:
628 *data = g_variant_new_strv(ARRAY_AND_SIZE(coupling));
631 *data = std_gvar_tuple_array(ARRAY_AND_SIZE(vdivs));
641 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
644 struct sr_datafeed_packet packet;
645 struct sr_datafeed_analog analog;
646 struct sr_analog_encoding encoding;
647 struct sr_analog_meaning meaning;
648 struct sr_analog_spec spec;
649 struct dev_context *devc = sdi->priv;
650 GSList *channels = devc->enabled_channels;
652 packet.type = SR_DF_ANALOG;
653 packet.payload = &analog;
654 /* TODO: support for 5xxx series 9-bit samples */
655 sr_analog_init(&analog, &encoding, &meaning, &spec, 0);
656 analog.num_samples = num_samples;
657 analog.meaning->mq = SR_MQ_VOLTAGE;
658 analog.meaning->unit = SR_UNIT_VOLT;
659 analog.meaning->mqflags = 0;
660 /* TODO: Check malloc return value. */
661 analog.data = g_try_malloc(num_samples * sizeof(float));
663 for (int ch = 0; ch < NUM_CHANNELS; ch++) {
664 if (!devc->ch_enabled[ch])
667 float range = ((float)vdivs[devc->voltage[ch]][0] / vdivs[devc->voltage[ch]][1]) * 8;
668 float vdivlog = log10f(range / 255);
669 int digits = -(int)vdivlog + (vdivlog < 0.0);
670 analog.encoding->digits = digits;
671 analog.spec->spec_digits = digits;
672 analog.meaning->channels = g_slist_append(NULL, channels->data);
674 for (int i = 0; i < num_samples; i++) {
676 * The device always sends data for both channels. If a channel
677 * is disabled, it contains a copy of the enabled channel's
678 * data. However, we only send the requested channels to
681 * Voltage values are encoded as a value 0-255 (0-512 on the
682 * DSO-5200*), where the value is a point in the range
683 * represented by the vdiv setting. There are 8 vertical divs,
684 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
687 /* TODO: Support for DSO-5xxx series 9-bit samples. */
688 ((float *)analog.data)[i] = range / 255 * *(buf + i * 2 + 1 - ch) - range / 2;
690 sr_session_send(sdi, &packet);
691 g_slist_free(analog.meaning->channels);
693 channels = channels->next;
699 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
700 * Only channel data comes in asynchronously, and all transfers for this are
701 * queued up beforehand, so this just needs to chuck the incoming data onto
702 * the libsigrok session bus.
704 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
706 struct sr_datafeed_packet packet;
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 packet.type = SR_DF_FRAME_END;
785 sr_session_send(sdi, &packet);
787 if (devc->limit_frames && ++devc->num_frames >= devc->limit_frames) {
788 /* Terminate session */
789 devc->dev_state = STOPPING;
791 devc->dev_state = NEW_CAPTURE;
796 static int handle_event(int fd, int revents, void *cb_data)
798 const struct sr_dev_inst *sdi;
799 struct sr_datafeed_packet packet;
801 struct sr_dev_driver *di;
802 struct dev_context *devc;
803 struct drv_context *drvc;
805 uint32_t trigger_offset;
806 uint8_t capturestate;
815 if (devc->dev_state == STOPPING) {
816 /* We've been told to wind up the acquisition. */
817 sr_dbg("Stopping acquisition.");
819 * TODO: Doesn't really cancel pending transfers so they might
820 * come in after SR_DF_END is sent.
822 usb_source_remove(sdi->session, drvc->sr_ctx);
824 std_session_send_df_end(sdi);
826 devc->dev_state = IDLE;
831 /* Always handle pending libusb events. */
832 tv.tv_sec = tv.tv_usec = 0;
833 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
836 if (devc->dev_state == NEW_CAPTURE) {
837 if (dso_capture_start(sdi) != SR_OK)
839 if (dso_enable_trigger(sdi) != SR_OK)
841 // if (dso_force_trigger(sdi) != SR_OK)
843 sr_dbg("Successfully requested next chunk.");
844 devc->dev_state = CAPTURE;
847 if (devc->dev_state != CAPTURE)
850 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
853 sr_dbg("Capturestate %d.", capturestate);
854 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
855 switch (capturestate) {
857 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
858 devc->capture_empty_count = 0;
859 if (dso_capture_start(sdi) != SR_OK)
861 if (dso_enable_trigger(sdi) != SR_OK)
863 // 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 packet.type = SR_DF_FRAME_BEGIN;
892 sr_session_send(sdi, &packet);
894 case CAPTURE_READY_9BIT:
896 sr_err("Not yet supported.");
898 case CAPTURE_TIMEOUT:
899 /* Doesn't matter, we'll try again next time. */
902 sr_dbg("Unknown capture state: %d.", capturestate);
909 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
911 struct dev_context *devc;
912 struct sr_dev_driver *di = sdi->driver;
913 struct drv_context *drvc = di->context;
917 if (configure_channels(sdi) != SR_OK) {
918 sr_err("Failed to configure channels.");
922 if (dso_init(sdi) != SR_OK)
925 if (dso_capture_start(sdi) != SR_OK)
928 devc->dev_state = CAPTURE;
929 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
931 std_session_send_df_header(sdi);
936 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
938 struct dev_context *devc;
941 devc->dev_state = STOPPING;
942 devc->num_frames = 0;
947 static struct sr_dev_driver hantek_dso_driver_info = {
948 .name = "hantek-dso",
949 .longname = "Hantek DSO",
952 .cleanup = std_cleanup,
954 .dev_list = std_dev_list,
955 .dev_clear = dev_clear,
956 .config_get = config_get,
957 .config_set = config_set,
958 .config_list = config_list,
959 .dev_open = dev_open,
960 .dev_close = dev_close,
961 .dev_acquisition_start = dev_acquisition_start,
962 .dev_acquisition_stop = dev_acquisition_stop,
965 SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info);