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[] = {
55 SR_CONF_CONTINUOUS | SR_CONF_SET,
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" },
108 { 0, 0, 0, 0, 0, 0, 0, 0 },
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 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
165 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
167 static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
169 struct sr_dev_inst *sdi;
170 struct sr_channel *ch;
171 struct sr_channel_group *cg;
172 struct drv_context *drvc;
173 struct dev_context *devc;
176 sdi = g_malloc0(sizeof(struct sr_dev_inst));
177 sdi->status = SR_ST_INITIALIZING;
178 sdi->vendor = g_strdup(prof->vendor);
179 sdi->model = g_strdup(prof->model);
180 sdi->driver = &hantek_dso_driver_info;
183 * Add only the real channels -- EXT isn't a source of data, only
184 * a trigger source internal to the device.
186 for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
187 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
188 cg = g_malloc0(sizeof(struct sr_channel_group));
189 cg->name = g_strdup(channel_names[i]);
190 cg->channels = g_slist_append(cg->channels, ch);
191 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
194 devc = g_malloc0(sizeof(struct dev_context));
195 devc->profile = prof;
196 devc->dev_state = IDLE;
197 devc->timebase = DEFAULT_TIMEBASE;
198 devc->ch1_enabled = TRUE;
199 devc->ch2_enabled = TRUE;
200 devc->voltage[0] = DEFAULT_VOLTAGE;
201 devc->voltage[1] = DEFAULT_VOLTAGE;
202 devc->coupling[0] = DEFAULT_COUPLING;
203 devc->coupling[1] = DEFAULT_COUPLING;
204 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
205 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
206 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
207 devc->framesize = DEFAULT_FRAMESIZE;
208 devc->triggerslope = SLOPE_POSITIVE;
209 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
210 devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
212 drvc = hantek_dso_driver_info.context;
213 drvc->instances = g_slist_append(drvc->instances, sdi);
218 static int configure_channels(const struct sr_dev_inst *sdi)
220 struct dev_context *devc;
221 struct sr_channel *ch;
227 g_slist_free(devc->enabled_channels);
228 devc->ch1_enabled = devc->ch2_enabled = FALSE;
229 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
232 devc->ch1_enabled = ch->enabled;
234 devc->ch2_enabled = ch->enabled;
236 devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
242 static void clear_dev_context(void *priv)
244 struct dev_context *devc;
247 g_free(devc->triggersource);
248 g_slist_free(devc->enabled_channels);
252 static int dev_clear(const struct sr_dev_driver *di)
254 return std_dev_clear(di, clear_dev_context);
257 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
259 return std_init(sr_ctx, di, LOG_PREFIX);
262 static GSList *scan(struct sr_dev_driver *di, GSList *options)
264 struct drv_context *drvc;
265 struct dev_context *devc;
266 struct sr_dev_inst *sdi;
267 struct sr_usb_dev_inst *usb;
268 struct sr_config *src;
269 const struct dso_profile *prof;
270 GSList *l, *devices, *conn_devices;
271 struct libusb_device_descriptor des;
272 libusb_device **devlist;
275 char connection_id[64];
282 for (l = options; l; l = l->next) {
284 if (src->key == SR_CONF_CONN) {
285 conn = g_variant_get_string(src->data, NULL);
290 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
294 /* Find all Hantek DSO devices and upload firmware to all of them. */
295 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
296 for (i = 0; devlist[i]; i++) {
299 for (l = conn_devices; l; l = l->next) {
301 if (usb->bus == libusb_get_bus_number(devlist[i])
302 && usb->address == libusb_get_device_address(devlist[i]))
306 /* This device matched none of the ones that
307 * matched the conn specification. */
311 libusb_get_device_descriptor(devlist[i], &des);
313 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
316 for (j = 0; dev_profiles[j].orig_vid; j++) {
317 if (des.idVendor == dev_profiles[j].orig_vid
318 && des.idProduct == dev_profiles[j].orig_pid) {
319 /* Device matches the pre-firmware profile. */
320 prof = &dev_profiles[j];
321 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
322 sdi = dso_dev_new(prof);
323 sdi->connection_id = g_strdup(connection_id);
324 devices = g_slist_append(devices, sdi);
326 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
327 USB_CONFIGURATION, prof->firmware) == SR_OK)
328 /* Remember when the firmware on this device was updated */
329 devc->fw_updated = g_get_monotonic_time();
331 sr_err("Firmware upload failed");
332 /* Dummy USB address of 0xff will get overwritten later. */
333 sdi->conn = sr_usb_dev_inst_new(
334 libusb_get_bus_number(devlist[i]), 0xff, NULL);
336 } else if (des.idVendor == dev_profiles[j].fw_vid
337 && des.idProduct == dev_profiles[j].fw_pid) {
338 /* Device matches the post-firmware profile. */
339 prof = &dev_profiles[j];
340 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
341 sdi = dso_dev_new(prof);
342 sdi->connection_id = g_strdup(connection_id);
343 sdi->status = SR_ST_INACTIVE;
344 devices = g_slist_append(devices, sdi);
345 sdi->inst_type = SR_INST_USB;
346 sdi->conn = sr_usb_dev_inst_new(
347 libusb_get_bus_number(devlist[i]),
348 libusb_get_device_address(devlist[i]), NULL);
353 /* not a supported VID/PID */
356 libusb_free_device_list(devlist, 1);
361 static GSList *dev_list(const struct sr_dev_driver *di)
363 return ((struct drv_context *)(di->context))->instances;
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 cleanup(const struct sr_dev_driver *di)
423 return dev_clear(di);
426 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
427 const struct sr_channel_group *cg)
429 struct dev_context *devc;
430 struct sr_usb_dev_inst *usb;
432 const uint64_t *vdiv;
436 case SR_CONF_NUM_HDIV:
437 *data = g_variant_new_int32(NUM_TIMEBASE);
439 case SR_CONF_NUM_VDIV:
440 *data = g_variant_new_int32(NUM_VDIV);
454 if (usb->address == 255)
455 /* Device still needs to re-enumerate after firmware
456 * upload, so we don't know its (future) address. */
458 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
459 *data = g_variant_new_string(str);
461 case SR_CONF_TIMEBASE:
462 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
463 timebases[devc->timebase][1]);
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_HORIZ_TRIGGERPOS:
476 *data = g_variant_new_double(devc->triggerposition);
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, const struct sr_dev_inst *sdi,
506 const struct sr_channel_group *cg)
508 struct dev_context *devc;
510 uint64_t tmp_u64, p, q;
511 int tmp_int, ch_idx, ret;
515 if (sdi->status != SR_ST_ACTIVE)
516 return SR_ERR_DEV_CLOSED;
522 case SR_CONF_LIMIT_FRAMES:
523 devc->limit_frames = g_variant_get_uint64(data);
525 case SR_CONF_TRIGGER_SLOPE:
526 tmp_str = g_variant_get_string(data, NULL);
527 if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
529 devc->triggerslope = (tmp_str[0] == 'r')
530 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
532 case SR_CONF_HORIZ_TRIGGERPOS:
533 tmp_double = g_variant_get_double(data);
534 if (tmp_double < 0.0 || tmp_double > 1.0) {
535 sr_err("Trigger position should be between 0.0 and 1.0.");
538 devc->triggerposition = tmp_double;
540 case SR_CONF_BUFFERSIZE:
541 tmp_u64 = g_variant_get_uint64(data);
542 for (i = 0; i < NUM_BUFFER_SIZES; i++) {
543 if (devc->profile->buffersizes[i] == tmp_u64) {
544 devc->framesize = tmp_u64;
548 if (i == NUM_BUFFER_SIZES)
551 case SR_CONF_TIMEBASE:
552 g_variant_get(data, "(tt)", &p, &q);
554 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
555 if (timebases[i][0] == p && timebases[i][1] == q) {
561 devc->timebase = tmp_int;
565 case SR_CONF_TRIGGER_SOURCE:
566 tmp_str = g_variant_get_string(data, NULL);
567 for (i = 0; trigger_sources[i]; i++) {
568 if (!strcmp(tmp_str, trigger_sources[i])) {
569 devc->triggersource = g_strdup(tmp_str);
573 if (trigger_sources[i] == 0)
581 if (sdi->channel_groups->data == cg)
583 else if (sdi->channel_groups->next->data == cg)
589 devc->filter[ch_idx] = g_variant_get_boolean(data);
592 g_variant_get(data, "(tt)", &p, &q);
594 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
595 if (vdivs[i][0] == p && vdivs[i][1] == q) {
601 devc->voltage[ch_idx] = tmp_int;
605 case SR_CONF_COUPLING:
606 tmp_str = g_variant_get_string(data, NULL);
607 for (i = 0; coupling[i]; i++) {
608 if (!strcmp(tmp_str, coupling[i])) {
609 devc->coupling[ch_idx] = i;
613 if (coupling[i] == 0)
625 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
626 const struct sr_channel_group *cg)
628 struct dev_context *devc;
629 GVariant *tuple, *rational[2];
633 if (key == SR_CONF_SCAN_OPTIONS) {
634 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
635 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
637 } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
638 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
639 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
648 case SR_CONF_DEVICE_OPTIONS:
649 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
650 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
652 case SR_CONF_BUFFERSIZE:
656 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
657 devc->profile->buffersizes, NUM_BUFFER_SIZES, sizeof(uint64_t));
659 case SR_CONF_TIMEBASE:
660 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
661 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
662 rational[0] = g_variant_new_uint64(timebases[i][0]);
663 rational[1] = g_variant_new_uint64(timebases[i][1]);
664 tuple = g_variant_new_tuple(rational, 2);
665 g_variant_builder_add_value(&gvb, tuple);
667 *data = g_variant_builder_end(&gvb);
669 case SR_CONF_TRIGGER_SOURCE:
670 *data = g_variant_new_strv(trigger_sources,
671 ARRAY_SIZE(trigger_sources));
673 case SR_CONF_TRIGGER_SLOPE:
674 *data = g_variant_new_strv(trigger_slopes,
675 ARRAY_SIZE(trigger_slopes));
682 case SR_CONF_DEVICE_OPTIONS:
683 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
684 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
686 case SR_CONF_COUPLING:
687 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
690 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
691 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
692 rational[0] = g_variant_new_uint64(vdivs[i][0]);
693 rational[1] = g_variant_new_uint64(vdivs[i][1]);
694 tuple = g_variant_new_tuple(rational, 2);
695 g_variant_builder_add_value(&gvb, tuple);
697 *data = g_variant_builder_end(&gvb);
707 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
710 struct sr_datafeed_packet packet;
711 struct sr_datafeed_analog analog;
712 struct dev_context *devc;
713 float ch1, ch2, range;
714 int num_channels, data_offset, i;
717 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
718 packet.type = SR_DF_ANALOG;
719 packet.payload = &analog;
720 /* TODO: support for 5xxx series 9-bit samples */
721 analog.channels = devc->enabled_channels;
722 analog.num_samples = num_samples;
723 analog.mq = SR_MQ_VOLTAGE;
724 analog.unit = SR_UNIT_VOLT;
726 /* TODO: Check malloc return value. */
727 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
729 for (i = 0; i < analog.num_samples; i++) {
731 * The device always sends data for both channels. If a channel
732 * is disabled, it contains a copy of the enabled channel's
733 * data. However, we only send the requested channels to
736 * Voltage values are encoded as a value 0-255 (0-512 on the
737 * DSO-5200*), where the value is a point in the range
738 * represented by the vdiv setting. There are 8 vertical divs,
739 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
742 /* TODO: Support for DSO-5xxx series 9-bit samples. */
743 if (devc->ch1_enabled) {
744 range = ((float)vdivs[devc->voltage[0]][0] / vdivs[devc->voltage[0]][1]) * 8;
745 ch1 = range / 255 * *(buf + i * 2 + 1);
746 /* Value is centered around 0V. */
748 analog.data[data_offset++] = ch1;
750 if (devc->ch2_enabled) {
751 range = ((float)vdivs[devc->voltage[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
752 ch2 = range / 255 * *(buf + i * 2);
754 analog.data[data_offset++] = ch2;
757 sr_session_send(devc->cb_data, &packet);
762 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
763 * Only channel data comes in asynchronously, and all transfers for this are
764 * queued up beforehand, so this just needs to chuck the incoming data onto
765 * the libsigrok session bus.
767 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
769 struct sr_datafeed_packet packet;
770 struct sr_dev_inst *sdi;
771 struct dev_context *devc;
772 int num_samples, pre;
774 sdi = transfer->user_data;
776 sr_spew("receive_transfer(): status %d received %d bytes.",
777 transfer->status, transfer->actual_length);
779 if (transfer->actual_length == 0)
780 /* Nothing to send to the bus. */
783 num_samples = transfer->actual_length / 2;
785 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
786 devc->samp_received + num_samples, devc->framesize);
789 * The device always sends a full frame, but the beginning of the frame
790 * doesn't represent the trigger point. The offset at which the trigger
791 * happened came in with the capture state, so we need to start sending
792 * from there up the session bus. The samples in the frame buffer
793 * before that trigger point came after the end of the device's frame
794 * buffer was reached, and it wrapped around to overwrite up until the
797 if (devc->samp_received < devc->trigger_offset) {
798 /* Trigger point not yet reached. */
799 if (devc->samp_received + num_samples < devc->trigger_offset) {
800 /* The entire chunk is before the trigger point. */
801 memcpy(devc->framebuf + devc->samp_buffered * 2,
802 transfer->buffer, num_samples * 2);
803 devc->samp_buffered += num_samples;
806 * This chunk hits or overruns the trigger point.
807 * Store the part before the trigger fired, and
808 * send the rest up to the session bus.
810 pre = devc->trigger_offset - devc->samp_received;
811 memcpy(devc->framebuf + devc->samp_buffered * 2,
812 transfer->buffer, pre * 2);
813 devc->samp_buffered += pre;
815 /* The rest of this chunk starts with the trigger point. */
816 sr_dbg("Reached trigger point, %d samples buffered.",
817 devc->samp_buffered);
819 /* Avoid the corner case where the chunk ended at
820 * exactly the trigger point. */
821 if (num_samples > pre)
822 send_chunk(sdi, transfer->buffer + pre * 2,
826 /* Already past the trigger point, just send it all out. */
827 send_chunk(sdi, transfer->buffer, num_samples);
830 devc->samp_received += num_samples;
832 /* Everything in this transfer was either copied to the buffer or
833 * sent to the session bus. */
834 g_free(transfer->buffer);
835 libusb_free_transfer(transfer);
837 if (devc->samp_received >= devc->framesize) {
838 /* That was the last chunk in this frame. Send the buffered
839 * pre-trigger samples out now, in one big chunk. */
840 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
841 devc->samp_buffered);
842 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
844 /* Mark the end of this frame. */
845 packet.type = SR_DF_FRAME_END;
846 sr_session_send(devc->cb_data, &packet);
848 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
849 /* Terminate session */
850 devc->dev_state = STOPPING;
852 devc->dev_state = NEW_CAPTURE;
857 static int handle_event(int fd, int revents, void *cb_data)
859 const struct sr_dev_inst *sdi;
860 struct sr_datafeed_packet packet;
862 struct sr_dev_driver *di;
863 struct dev_context *devc;
864 struct drv_context *drvc;
866 uint32_t trigger_offset;
867 uint8_t capturestate;
876 if (devc->dev_state == STOPPING) {
877 /* We've been told to wind up the acquisition. */
878 sr_dbg("Stopping acquisition.");
880 * TODO: Doesn't really cancel pending transfers so they might
881 * come in after SR_DF_END is sent.
883 usb_source_remove(sdi->session, drvc->sr_ctx);
885 packet.type = SR_DF_END;
886 sr_session_send(sdi, &packet);
888 devc->dev_state = IDLE;
893 /* Always handle pending libusb events. */
894 tv.tv_sec = tv.tv_usec = 0;
895 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
898 if (devc->dev_state == NEW_CAPTURE) {
899 if (dso_capture_start(sdi) != SR_OK)
901 if (dso_enable_trigger(sdi) != SR_OK)
903 // if (dso_force_trigger(sdi) != SR_OK)
905 sr_dbg("Successfully requested next chunk.");
906 devc->dev_state = CAPTURE;
909 if (devc->dev_state != CAPTURE)
912 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
915 sr_dbg("Capturestate %d.", capturestate);
916 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
917 switch (capturestate) {
919 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
920 devc->capture_empty_count = 0;
921 if (dso_capture_start(sdi) != SR_OK)
923 if (dso_enable_trigger(sdi) != SR_OK)
925 // if (dso_force_trigger(sdi) != SR_OK)
927 sr_dbg("Successfully requested next chunk.");
930 case CAPTURE_FILLING:
933 case CAPTURE_READY_8BIT:
934 /* Remember where in the captured frame the trigger is. */
935 devc->trigger_offset = trigger_offset;
937 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
938 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
939 devc->samp_buffered = devc->samp_received = 0;
941 /* Tell the scope to send us the first frame. */
942 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
946 * Don't hit the state machine again until we're done fetching
947 * the data we just told the scope to send.
949 devc->dev_state = FETCH_DATA;
951 /* Tell the frontend a new frame is on the way. */
952 packet.type = SR_DF_FRAME_BEGIN;
953 sr_session_send(sdi, &packet);
955 case CAPTURE_READY_9BIT:
957 sr_err("Not yet supported.");
959 case CAPTURE_TIMEOUT:
960 /* Doesn't matter, we'll try again next time. */
963 sr_dbg("Unknown capture state: %d.", capturestate);
970 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
972 struct dev_context *devc;
973 struct sr_dev_driver *di = sdi->driver;
974 struct drv_context *drvc = di->context;
976 if (sdi->status != SR_ST_ACTIVE)
977 return SR_ERR_DEV_CLOSED;
980 devc->cb_data = cb_data;
982 if (configure_channels(sdi) != SR_OK) {
983 sr_err("Failed to configure channels.");
987 if (dso_init(sdi) != SR_OK)
990 if (dso_capture_start(sdi) != SR_OK)
993 devc->dev_state = CAPTURE;
994 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
996 /* Send header packet to the session bus. */
997 std_session_send_df_header(cb_data, LOG_PREFIX);
1002 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1004 struct dev_context *devc;
1008 if (sdi->status != SR_ST_ACTIVE)
1012 devc->dev_state = STOPPING;
1017 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
1018 .name = "hantek-dso",
1019 .longname = "Hantek DSO",
1024 .dev_list = dev_list,
1025 .dev_clear = dev_clear,
1026 .config_get = config_get,
1027 .config_set = config_set,
1028 .config_list = config_list,
1029 .dev_open = dev_open,
1030 .dev_close = dev_close,
1031 .dev_acquisition_start = dev_acquisition_start,
1032 .dev_acquisition_stop = dev_acquisition_stop,