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/>.
24 #include <sys/types.h>
33 #include <libsigrok/libsigrok.h>
34 #include "libsigrok-internal.h"
37 /* Max time in ms before we want to check on USB events */
38 /* TODO tune this properly */
41 #define NUM_TIMEBASE 10
44 #define NUM_BUFFER_SIZES 2
46 static const uint32_t scanopts[] = {
50 static const uint32_t drvopts[] = {
54 static const uint32_t devopts[] = {
56 SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
57 SR_CONF_CONN | SR_CONF_GET,
58 SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
59 SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
60 SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
61 SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET,
62 SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
63 SR_CONF_NUM_HDIV | SR_CONF_GET,
64 SR_CONF_NUM_VDIV | SR_CONF_GET,
67 static const uint32_t devopts_cg[] = {
68 SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
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,
73 static const char *channel_names[] = {
77 static const uint64_t buffersizes_32k[] = {
78 (10 * 1024), (32 * 1024),
80 static const uint64_t buffersizes_512k[] = {
81 (10 * 1024), (512 * 1024),
83 static const uint64_t buffersizes_14k[] = {
84 (10 * 1024), (14 * 1024),
87 static const struct dso_profile dev_profiles[] = {
88 { 0x04b4, 0x2090, 0x04b5, 0x2090,
91 "hantek-dso-2090.fw" },
92 { 0x04b4, 0x2150, 0x04b5, 0x2150,
95 "hantek-dso-2150.fw" },
96 { 0x04b4, 0x2250, 0x04b5, 0x2250,
99 "hantek-dso-2250.fw" },
100 { 0x04b4, 0x5200, 0x04b5, 0x5200,
101 "Hantek", "DSO-5200",
103 "hantek-dso-5200.fw" },
104 { 0x04b4, 0x520a, 0x04b5, 0x520a,
105 "Hantek", "DSO-5200A",
107 "hantek-dso-5200A.fw" },
111 static const uint64_t timebases[][2] = {
131 static const uint64_t vdivs[][2] = {
145 static const char *trigger_sources[] = {
152 static const char *trigger_slopes[] = {
157 static const char *coupling[] = {
163 static int dev_acquisition_stop(struct sr_dev_inst *sdi);
165 static struct sr_dev_inst *dso_dev_new(struct sr_dev_driver *di,
166 const struct dso_profile *prof)
168 struct sr_dev_inst *sdi;
169 struct sr_channel *ch;
170 struct sr_channel_group *cg;
171 struct drv_context *drvc;
172 struct dev_context *devc;
175 sdi = g_malloc0(sizeof(struct sr_dev_inst));
176 sdi->status = SR_ST_INITIALIZING;
177 sdi->vendor = g_strdup(prof->vendor);
178 sdi->model = g_strdup(prof->model);
182 * Add only the real channels -- EXT isn't a source of data, only
183 * a trigger source internal to the device.
185 for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
186 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
187 cg = g_malloc0(sizeof(struct sr_channel_group));
188 cg->name = g_strdup(channel_names[i]);
189 cg->channels = g_slist_append(cg->channels, ch);
190 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
193 devc = g_malloc0(sizeof(struct dev_context));
194 devc->profile = prof;
195 devc->dev_state = IDLE;
196 devc->timebase = DEFAULT_TIMEBASE;
197 devc->ch1_enabled = TRUE;
198 devc->ch2_enabled = TRUE;
199 devc->voltage[0] = DEFAULT_VOLTAGE;
200 devc->voltage[1] = DEFAULT_VOLTAGE;
201 devc->coupling[0] = DEFAULT_COUPLING;
202 devc->coupling[1] = DEFAULT_COUPLING;
203 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
204 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
205 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
206 devc->framesize = DEFAULT_FRAMESIZE;
207 devc->triggerslope = SLOPE_POSITIVE;
208 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
209 devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
212 drvc->instances = g_slist_append(drvc->instances, sdi);
217 static int configure_channels(const struct sr_dev_inst *sdi)
219 struct dev_context *devc;
220 struct sr_channel *ch;
226 g_slist_free(devc->enabled_channels);
227 devc->ch1_enabled = devc->ch2_enabled = FALSE;
228 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
231 devc->ch1_enabled = ch->enabled;
233 devc->ch2_enabled = ch->enabled;
235 devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
241 static void clear_dev_context(void *priv)
243 struct dev_context *devc;
246 g_free(devc->triggersource);
247 g_slist_free(devc->enabled_channels);
251 static int dev_clear(const struct sr_dev_driver *di)
253 return std_dev_clear(di, clear_dev_context);
256 static GSList *scan(struct sr_dev_driver *di, GSList *options)
258 struct drv_context *drvc;
259 struct dev_context *devc;
260 struct sr_dev_inst *sdi;
261 struct sr_usb_dev_inst *usb;
262 struct sr_config *src;
263 const struct dso_profile *prof;
264 GSList *l, *devices, *conn_devices;
265 struct libusb_device_descriptor des;
266 libusb_device **devlist;
269 char connection_id[64];
276 for (l = options; l; l = l->next) {
278 if (src->key == SR_CONF_CONN) {
279 conn = g_variant_get_string(src->data, NULL);
284 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
288 /* Find all Hantek DSO devices and upload firmware to all of them. */
289 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
290 for (i = 0; devlist[i]; i++) {
293 for (l = conn_devices; l; l = l->next) {
295 if (usb->bus == libusb_get_bus_number(devlist[i])
296 && usb->address == libusb_get_device_address(devlist[i]))
300 /* This device matched none of the ones that
301 * matched the conn specification. */
305 libusb_get_device_descriptor(devlist[i], &des);
307 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
310 for (j = 0; dev_profiles[j].orig_vid; j++) {
311 if (des.idVendor == dev_profiles[j].orig_vid
312 && des.idProduct == dev_profiles[j].orig_pid) {
313 /* Device matches the pre-firmware profile. */
314 prof = &dev_profiles[j];
315 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
316 sdi = dso_dev_new(di, prof);
317 sdi->connection_id = g_strdup(connection_id);
318 devices = g_slist_append(devices, sdi);
320 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
321 USB_CONFIGURATION, prof->firmware) == SR_OK)
322 /* Remember when the firmware on this device was updated */
323 devc->fw_updated = g_get_monotonic_time();
325 sr_err("Firmware upload failed");
326 /* Dummy USB address of 0xff will get overwritten later. */
327 sdi->conn = sr_usb_dev_inst_new(
328 libusb_get_bus_number(devlist[i]), 0xff, NULL);
330 } else if (des.idVendor == dev_profiles[j].fw_vid
331 && des.idProduct == dev_profiles[j].fw_pid) {
332 /* Device matches the post-firmware profile. */
333 prof = &dev_profiles[j];
334 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
335 sdi = dso_dev_new(di, prof);
336 sdi->connection_id = g_strdup(connection_id);
337 sdi->status = SR_ST_INACTIVE;
338 devices = g_slist_append(devices, sdi);
339 sdi->inst_type = SR_INST_USB;
340 sdi->conn = sr_usb_dev_inst_new(
341 libusb_get_bus_number(devlist[i]),
342 libusb_get_device_address(devlist[i]), NULL);
347 /* not a supported VID/PID */
350 libusb_free_device_list(devlist, 1);
355 static int dev_open(struct sr_dev_inst *sdi)
357 struct dev_context *devc;
358 struct sr_usb_dev_inst *usb;
359 int64_t timediff_us, timediff_ms;
366 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
367 * for the FX2 to renumerate.
370 if (devc->fw_updated > 0) {
371 sr_info("Waiting for device to reset.");
372 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
373 g_usleep(300 * 1000);
375 while (timediff_ms < MAX_RENUM_DELAY_MS) {
376 if ((err = dso_open(sdi)) == SR_OK)
378 g_usleep(100 * 1000);
379 timediff_us = g_get_monotonic_time() - devc->fw_updated;
380 timediff_ms = timediff_us / 1000;
381 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
383 sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
389 sr_err("Unable to open device.");
393 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
395 sr_err("Unable to claim interface: %s.",
396 libusb_error_name(err));
403 static int dev_close(struct sr_dev_inst *sdi)
410 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
411 const struct sr_channel_group *cg)
413 struct dev_context *devc;
414 struct sr_usb_dev_inst *usb;
417 const uint64_t *vdiv;
421 case SR_CONF_NUM_HDIV:
422 *data = g_variant_new_int32(NUM_TIMEBASE);
424 case SR_CONF_NUM_VDIV:
425 *data = g_variant_new_int32(NUM_VDIV);
439 if (usb->address == 255)
440 /* Device still needs to re-enumerate after firmware
441 * upload, so we don't know its (future) address. */
443 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
444 *data = g_variant_new_string(str);
446 case SR_CONF_TIMEBASE:
447 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
448 timebases[devc->timebase][1]);
450 case SR_CONF_BUFFERSIZE:
451 *data = g_variant_new_uint64(devc->framesize);
453 case SR_CONF_TRIGGER_SOURCE:
454 *data = g_variant_new_string(devc->triggersource);
456 case SR_CONF_TRIGGER_SLOPE:
457 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
458 *data = g_variant_new_string(s);
460 case SR_CONF_HORIZ_TRIGGERPOS:
461 *data = g_variant_new_double(devc->triggerposition);
467 if (sdi->channel_groups->data == cg)
469 else if (sdi->channel_groups->next->data == cg)
475 *data = g_variant_new_boolean(devc->filter[ch_idx]);
478 vdiv = vdivs[devc->voltage[ch_idx]];
479 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
481 case SR_CONF_COUPLING:
482 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
490 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
491 const struct sr_channel_group *cg)
493 struct dev_context *devc;
495 uint64_t tmp_u64, p, q;
496 int tmp_int, ch_idx, ret;
500 if (sdi->status != SR_ST_ACTIVE)
501 return SR_ERR_DEV_CLOSED;
507 case SR_CONF_LIMIT_FRAMES:
508 devc->limit_frames = g_variant_get_uint64(data);
510 case SR_CONF_TRIGGER_SLOPE:
511 tmp_str = g_variant_get_string(data, NULL);
512 if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
514 devc->triggerslope = (tmp_str[0] == 'r')
515 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
517 case SR_CONF_HORIZ_TRIGGERPOS:
518 tmp_double = g_variant_get_double(data);
519 if (tmp_double < 0.0 || tmp_double > 1.0) {
520 sr_err("Trigger position should be between 0.0 and 1.0.");
523 devc->triggerposition = tmp_double;
525 case SR_CONF_BUFFERSIZE:
526 tmp_u64 = g_variant_get_uint64(data);
527 for (i = 0; i < NUM_BUFFER_SIZES; i++) {
528 if (devc->profile->buffersizes[i] == tmp_u64) {
529 devc->framesize = tmp_u64;
533 if (i == NUM_BUFFER_SIZES)
536 case SR_CONF_TIMEBASE:
537 g_variant_get(data, "(tt)", &p, &q);
539 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
540 if (timebases[i][0] == p && timebases[i][1] == q) {
546 devc->timebase = tmp_int;
550 case SR_CONF_TRIGGER_SOURCE:
551 tmp_str = g_variant_get_string(data, NULL);
552 for (i = 0; trigger_sources[i]; i++) {
553 if (!strcmp(tmp_str, trigger_sources[i])) {
554 devc->triggersource = g_strdup(tmp_str);
558 if (trigger_sources[i] == 0)
566 if (sdi->channel_groups->data == cg)
568 else if (sdi->channel_groups->next->data == cg)
574 devc->filter[ch_idx] = g_variant_get_boolean(data);
577 g_variant_get(data, "(tt)", &p, &q);
579 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
580 if (vdivs[i][0] == p && vdivs[i][1] == q) {
586 devc->voltage[ch_idx] = tmp_int;
590 case SR_CONF_COUPLING:
591 tmp_str = g_variant_get_string(data, NULL);
592 for (i = 0; coupling[i]; i++) {
593 if (!strcmp(tmp_str, coupling[i])) {
594 devc->coupling[ch_idx] = i;
598 if (coupling[i] == 0)
610 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
611 const struct sr_channel_group *cg)
613 struct dev_context *devc;
614 GVariant *tuple, *rational[2];
618 if (key == SR_CONF_SCAN_OPTIONS) {
619 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
620 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
622 } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
623 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
624 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
633 case SR_CONF_DEVICE_OPTIONS:
634 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
635 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
637 case SR_CONF_BUFFERSIZE:
641 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
642 devc->profile->buffersizes, NUM_BUFFER_SIZES, sizeof(uint64_t));
644 case SR_CONF_TIMEBASE:
645 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
646 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
647 rational[0] = g_variant_new_uint64(timebases[i][0]);
648 rational[1] = g_variant_new_uint64(timebases[i][1]);
649 tuple = g_variant_new_tuple(rational, 2);
650 g_variant_builder_add_value(&gvb, tuple);
652 *data = g_variant_builder_end(&gvb);
654 case SR_CONF_TRIGGER_SOURCE:
655 *data = g_variant_new_strv(trigger_sources,
656 ARRAY_SIZE(trigger_sources));
658 case SR_CONF_TRIGGER_SLOPE:
659 *data = g_variant_new_strv(trigger_slopes,
660 ARRAY_SIZE(trigger_slopes));
667 case SR_CONF_DEVICE_OPTIONS:
668 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
669 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
671 case SR_CONF_COUPLING:
672 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
675 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
676 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
677 rational[0] = g_variant_new_uint64(vdivs[i][0]);
678 rational[1] = g_variant_new_uint64(vdivs[i][1]);
679 tuple = g_variant_new_tuple(rational, 2);
680 g_variant_builder_add_value(&gvb, tuple);
682 *data = g_variant_builder_end(&gvb);
692 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
695 struct sr_datafeed_packet packet;
696 struct sr_datafeed_analog_old analog;
697 struct dev_context *devc;
698 float ch1, ch2, range;
699 int num_channels, data_offset, i;
702 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
703 packet.type = SR_DF_ANALOG_OLD;
704 packet.payload = &analog;
705 /* TODO: support for 5xxx series 9-bit samples */
706 analog.channels = devc->enabled_channels;
707 analog.num_samples = num_samples;
708 analog.mq = SR_MQ_VOLTAGE;
709 analog.unit = SR_UNIT_VOLT;
711 /* TODO: Check malloc return value. */
712 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
714 for (i = 0; i < analog.num_samples; i++) {
716 * The device always sends data for both channels. If a channel
717 * is disabled, it contains a copy of the enabled channel's
718 * data. However, we only send the requested channels to
721 * Voltage values are encoded as a value 0-255 (0-512 on the
722 * DSO-5200*), where the value is a point in the range
723 * represented by the vdiv setting. There are 8 vertical divs,
724 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
727 /* TODO: Support for DSO-5xxx series 9-bit samples. */
728 if (devc->ch1_enabled) {
729 range = ((float)vdivs[devc->voltage[0]][0] / vdivs[devc->voltage[0]][1]) * 8;
730 ch1 = range / 255 * *(buf + i * 2 + 1);
731 /* Value is centered around 0V. */
733 analog.data[data_offset++] = ch1;
735 if (devc->ch2_enabled) {
736 range = ((float)vdivs[devc->voltage[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
737 ch2 = range / 255 * *(buf + i * 2);
739 analog.data[data_offset++] = ch2;
742 sr_session_send(sdi, &packet);
747 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
748 * Only channel data comes in asynchronously, and all transfers for this are
749 * queued up beforehand, so this just needs to chuck the incoming data onto
750 * the libsigrok session bus.
752 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
754 struct sr_datafeed_packet packet;
755 struct sr_dev_inst *sdi;
756 struct dev_context *devc;
757 int num_samples, pre;
759 sdi = transfer->user_data;
761 sr_spew("receive_transfer(): status %s received %d bytes.",
762 libusb_error_name(transfer->status), transfer->actual_length);
764 if (transfer->actual_length == 0)
765 /* Nothing to send to the bus. */
768 num_samples = transfer->actual_length / 2;
770 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
771 devc->samp_received + num_samples, devc->framesize);
774 * The device always sends a full frame, but the beginning of the frame
775 * doesn't represent the trigger point. The offset at which the trigger
776 * happened came in with the capture state, so we need to start sending
777 * from there up the session bus. The samples in the frame buffer
778 * before that trigger point came after the end of the device's frame
779 * buffer was reached, and it wrapped around to overwrite up until the
782 if (devc->samp_received < devc->trigger_offset) {
783 /* Trigger point not yet reached. */
784 if (devc->samp_received + num_samples < devc->trigger_offset) {
785 /* The entire chunk is before the trigger point. */
786 memcpy(devc->framebuf + devc->samp_buffered * 2,
787 transfer->buffer, num_samples * 2);
788 devc->samp_buffered += num_samples;
791 * This chunk hits or overruns the trigger point.
792 * Store the part before the trigger fired, and
793 * send the rest up to the session bus.
795 pre = devc->trigger_offset - devc->samp_received;
796 memcpy(devc->framebuf + devc->samp_buffered * 2,
797 transfer->buffer, pre * 2);
798 devc->samp_buffered += pre;
800 /* The rest of this chunk starts with the trigger point. */
801 sr_dbg("Reached trigger point, %d samples buffered.",
802 devc->samp_buffered);
804 /* Avoid the corner case where the chunk ended at
805 * exactly the trigger point. */
806 if (num_samples > pre)
807 send_chunk(sdi, transfer->buffer + pre * 2,
811 /* Already past the trigger point, just send it all out. */
812 send_chunk(sdi, transfer->buffer, num_samples);
815 devc->samp_received += num_samples;
817 /* Everything in this transfer was either copied to the buffer or
818 * sent to the session bus. */
819 g_free(transfer->buffer);
820 libusb_free_transfer(transfer);
822 if (devc->samp_received >= devc->framesize) {
823 /* That was the last chunk in this frame. Send the buffered
824 * pre-trigger samples out now, in one big chunk. */
825 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
826 devc->samp_buffered);
827 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
829 /* Mark the end of this frame. */
830 packet.type = SR_DF_FRAME_END;
831 sr_session_send(sdi, &packet);
833 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
834 /* Terminate session */
835 devc->dev_state = STOPPING;
837 devc->dev_state = NEW_CAPTURE;
842 static int handle_event(int fd, int revents, void *cb_data)
844 const struct sr_dev_inst *sdi;
845 struct sr_datafeed_packet packet;
847 struct sr_dev_driver *di;
848 struct dev_context *devc;
849 struct drv_context *drvc;
851 uint32_t trigger_offset;
852 uint8_t capturestate;
861 if (devc->dev_state == STOPPING) {
862 /* We've been told to wind up the acquisition. */
863 sr_dbg("Stopping acquisition.");
865 * TODO: Doesn't really cancel pending transfers so they might
866 * come in after SR_DF_END is sent.
868 usb_source_remove(sdi->session, drvc->sr_ctx);
870 std_session_send_df_end(sdi, LOG_PREFIX);
872 devc->dev_state = IDLE;
877 /* Always handle pending libusb events. */
878 tv.tv_sec = tv.tv_usec = 0;
879 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
882 if (devc->dev_state == NEW_CAPTURE) {
883 if (dso_capture_start(sdi) != SR_OK)
885 if (dso_enable_trigger(sdi) != SR_OK)
887 // if (dso_force_trigger(sdi) != SR_OK)
889 sr_dbg("Successfully requested next chunk.");
890 devc->dev_state = CAPTURE;
893 if (devc->dev_state != CAPTURE)
896 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
899 sr_dbg("Capturestate %d.", capturestate);
900 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
901 switch (capturestate) {
903 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
904 devc->capture_empty_count = 0;
905 if (dso_capture_start(sdi) != SR_OK)
907 if (dso_enable_trigger(sdi) != SR_OK)
909 // if (dso_force_trigger(sdi) != SR_OK)
911 sr_dbg("Successfully requested next chunk.");
914 case CAPTURE_FILLING:
917 case CAPTURE_READY_8BIT:
918 /* Remember where in the captured frame the trigger is. */
919 devc->trigger_offset = trigger_offset;
921 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
922 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
923 devc->samp_buffered = devc->samp_received = 0;
925 /* Tell the scope to send us the first frame. */
926 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
930 * Don't hit the state machine again until we're done fetching
931 * the data we just told the scope to send.
933 devc->dev_state = FETCH_DATA;
935 /* Tell the frontend a new frame is on the way. */
936 packet.type = SR_DF_FRAME_BEGIN;
937 sr_session_send(sdi, &packet);
939 case CAPTURE_READY_9BIT:
941 sr_err("Not yet supported.");
943 case CAPTURE_TIMEOUT:
944 /* Doesn't matter, we'll try again next time. */
947 sr_dbg("Unknown capture state: %d.", capturestate);
954 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
956 struct dev_context *devc;
957 struct sr_dev_driver *di = sdi->driver;
958 struct drv_context *drvc = di->context;
960 if (sdi->status != SR_ST_ACTIVE)
961 return SR_ERR_DEV_CLOSED;
965 if (configure_channels(sdi) != SR_OK) {
966 sr_err("Failed to configure channels.");
970 if (dso_init(sdi) != SR_OK)
973 if (dso_capture_start(sdi) != SR_OK)
976 devc->dev_state = CAPTURE;
977 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
979 std_session_send_df_header(sdi, LOG_PREFIX);
984 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
986 struct dev_context *devc;
988 if (sdi->status != SR_ST_ACTIVE)
992 devc->dev_state = STOPPING;
997 static struct sr_dev_driver hantek_dso_driver_info = {
998 .name = "hantek-dso",
999 .longname = "Hantek DSO",
1002 .cleanup = std_cleanup,
1004 .dev_list = std_dev_list,
1005 .dev_clear = dev_clear,
1006 .config_get = config_get,
1007 .config_set = config_set,
1008 .config_list = config_list,
1009 .dev_open = dev_open,
1010 .dev_close = dev_close,
1011 .dev_acquisition_start = dev_acquisition_start,
1012 .dev_acquisition_stop = dev_acquisition_stop,
1015 SR_REGISTER_DEV_DRIVER(hantek_dso_driver_info);