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/>.
23 #include <sys/types.h>
32 #include "libsigrok.h"
33 #include "libsigrok-internal.h"
36 /* Max time in ms before we want to check on USB events */
37 /* TODO tune this properly */
40 #define NUM_TIMEBASE 10
43 static const uint32_t scanopts[] = {
47 static const uint32_t drvopts[] = {
51 static const uint32_t devopts[] = {
52 SR_CONF_CONTINUOUS | SR_CONF_SET,
53 SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
54 SR_CONF_CONN | SR_CONF_GET,
55 SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
56 SR_CONF_BUFFERSIZE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
57 SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
58 SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET,
59 SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
60 SR_CONF_NUM_TIMEBASE | SR_CONF_GET,
61 SR_CONF_NUM_VDIV | SR_CONF_GET,
64 static const uint32_t devopts_cg[] = {
65 SR_CONF_FILTER | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
66 SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
67 SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
70 static const char *channel_names[] = {
75 static const uint64_t buffersizes_32k[] = {
78 static const uint64_t buffersizes_512k[] = {
81 static const uint64_t buffersizes_14k[] = {
85 static const struct dso_profile dev_profiles[] = {
86 { 0x04b4, 0x2090, 0x04b5, 0x2090,
89 FIRMWARE_DIR "/hantek-dso-2090.fw" },
90 { 0x04b4, 0x2150, 0x04b5, 0x2150,
93 FIRMWARE_DIR "/hantek-dso-2150.fw" },
94 { 0x04b4, 0x2250, 0x04b5, 0x2250,
97 FIRMWARE_DIR "/hantek-dso-2250.fw" },
98 { 0x04b4, 0x5200, 0x04b5, 0x5200,
101 FIRMWARE_DIR "/hantek-dso-5200.fw" },
102 { 0x04b4, 0x520a, 0x04b5, 0x520a,
103 "Hantek", "DSO-5200A",
105 FIRMWARE_DIR "/hantek-dso-5200A.fw" },
106 { 0, 0, 0, 0, 0, 0, 0, 0 },
109 static const uint64_t timebases[][2] = {
129 static const uint64_t vdivs[][2] = {
143 static const char *trigger_sources[] = {
150 static const char *trigger_slopes[] = {
155 static const char *coupling[] = {
161 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
162 static struct sr_dev_driver *di = &hantek_dso_driver_info;
164 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
166 static struct sr_dev_inst *dso_dev_new(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 = sr_dev_inst_new();
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; channel_names[i]; i++) {
186 ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
187 sdi->channels = g_slist_append(sdi->channels, ch);
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;
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(void)
254 return std_dev_clear(di, clear_dev_context);
257 static int init(struct sr_context *sr_ctx)
259 return std_init(sr_ctx, di, LOG_PREFIX);
262 static GSList *scan(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 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
312 sr_err("Failed to get device descriptor: %s.",
313 libusb_error_name(ret));
317 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
320 for (j = 0; dev_profiles[j].orig_vid; j++) {
321 if (des.idVendor == dev_profiles[j].orig_vid
322 && des.idProduct == dev_profiles[j].orig_pid) {
323 /* Device matches the pre-firmware profile. */
324 prof = &dev_profiles[j];
325 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
326 sdi = dso_dev_new(prof);
327 sdi->connection_id = g_strdup(connection_id);
328 devices = g_slist_append(devices, sdi);
330 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
331 prof->firmware) == SR_OK)
332 /* Remember when the firmware on this device was updated */
333 devc->fw_updated = g_get_monotonic_time();
335 sr_err("Firmware upload failed");
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);
365 static GSList *dev_list(void)
367 return ((struct drv_context *)(di->priv))->instances;
370 static int dev_open(struct sr_dev_inst *sdi)
372 struct dev_context *devc;
373 struct sr_usb_dev_inst *usb;
374 int64_t timediff_us, timediff_ms;
381 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
382 * for the FX2 to renumerate.
385 if (devc->fw_updated > 0) {
386 sr_info("Waiting for device to reset.");
387 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
388 g_usleep(300 * 1000);
390 while (timediff_ms < MAX_RENUM_DELAY_MS) {
391 if ((err = dso_open(sdi)) == SR_OK)
393 g_usleep(100 * 1000);
394 timediff_us = g_get_monotonic_time() - devc->fw_updated;
395 timediff_ms = timediff_us / 1000;
396 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
398 sr_info("Device came back after %d ms.", timediff_ms);
404 sr_err("Unable to open device.");
408 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
410 sr_err("Unable to claim interface: %s.",
411 libusb_error_name(err));
418 static int dev_close(struct sr_dev_inst *sdi)
425 static int cleanup(void)
430 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
431 const struct sr_channel_group *cg)
433 struct dev_context *devc;
434 struct sr_usb_dev_inst *usb;
436 const uint64_t *vdiv;
442 case SR_CONF_NUM_TIMEBASE:
443 *data = g_variant_new_int32(NUM_TIMEBASE);
445 case SR_CONF_NUM_VDIV:
446 *data = g_variant_new_int32(NUM_VDIV);
460 if (usb->address == 255)
461 /* Device still needs to re-enumerate after firmware
462 * upload, so we don't know its (future) address. */
464 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
465 *data = g_variant_new_string(str);
467 case SR_CONF_TIMEBASE:
468 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
469 timebases[devc->timebase][1]);
471 case SR_CONF_BUFFERSIZE:
472 *data = g_variant_new_uint64(devc->framesize);
474 case SR_CONF_TRIGGER_SOURCE:
475 *data = g_variant_new_string(devc->triggersource);
477 case SR_CONF_TRIGGER_SLOPE:
478 if (devc->triggerslope == SLOPE_POSITIVE)
482 *data = g_variant_new_string(s);
484 case SR_CONF_HORIZ_TRIGGERPOS:
485 *data = g_variant_new_double(devc->triggerposition);
491 if (sdi->channel_groups->data == cg)
493 else if (sdi->channel_groups->next->data == cg)
499 *data = g_variant_new_boolean(devc->filter[ch_idx]);
502 vdiv = vdivs[devc->voltage[ch_idx]];
503 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
505 case SR_CONF_COUPLING:
506 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
514 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
515 const struct sr_channel_group *cg)
517 struct dev_context *devc;
519 uint64_t tmp_u64, p, q;
520 int tmp_int, ch_idx, ret;
524 if (sdi->status != SR_ST_ACTIVE)
525 return SR_ERR_DEV_CLOSED;
531 case SR_CONF_LIMIT_FRAMES:
532 devc->limit_frames = g_variant_get_uint64(data);
534 case SR_CONF_TRIGGER_SLOPE:
535 tmp_str = g_variant_get_string(data, NULL);
536 if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
538 devc->triggerslope = (tmp_str[0] == 'r')
539 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
541 case SR_CONF_HORIZ_TRIGGERPOS:
542 tmp_double = g_variant_get_double(data);
543 if (tmp_double < 0.0 || tmp_double > 1.0) {
544 sr_err("Trigger position should be between 0.0 and 1.0.");
547 devc->triggerposition = tmp_double;
549 case SR_CONF_BUFFERSIZE:
550 tmp_u64 = g_variant_get_uint64(data);
551 for (i = 0; i < 2; i++) {
552 if (devc->profile->buffersizes[i] == tmp_u64) {
553 devc->framesize = tmp_u64;
560 case SR_CONF_TIMEBASE:
561 g_variant_get(data, "(tt)", &p, &q);
563 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
564 if (timebases[i][0] == p && timebases[i][1] == q) {
570 devc->timebase = tmp_int;
574 case SR_CONF_TRIGGER_SOURCE:
575 tmp_str = g_variant_get_string(data, NULL);
576 for (i = 0; trigger_sources[i]; i++) {
577 if (!strcmp(tmp_str, trigger_sources[i])) {
578 devc->triggersource = g_strdup(tmp_str);
582 if (trigger_sources[i] == 0)
590 if (sdi->channel_groups->data == cg)
592 else if (sdi->channel_groups->next->data == cg)
598 devc->filter[ch_idx] = g_variant_get_boolean(data);
601 g_variant_get(data, "(tt)", &p, &q);
603 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
604 if (vdivs[i][0] == p && vdivs[i][1] == q) {
610 devc->voltage[ch_idx] = tmp_int;
614 case SR_CONF_COUPLING:
615 tmp_str = g_variant_get_string(data, NULL);
616 for (i = 0; coupling[i]; i++) {
617 if (!strcmp(tmp_str, coupling[i])) {
618 devc->coupling[ch_idx] = i;
622 if (coupling[i] == 0)
634 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
635 const struct sr_channel_group *cg)
637 struct dev_context *devc;
638 GVariant *tuple, *rational[2];
642 if (key == SR_CONF_SCAN_OPTIONS) {
643 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
644 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
646 } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
647 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
648 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
657 case SR_CONF_DEVICE_OPTIONS:
658 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
659 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
661 case SR_CONF_BUFFERSIZE:
665 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
666 devc->profile->buffersizes, 2, sizeof(uint64_t));
668 case SR_CONF_TIMEBASE:
669 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
670 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
671 rational[0] = g_variant_new_uint64(timebases[i][0]);
672 rational[1] = g_variant_new_uint64(timebases[i][1]);
673 tuple = g_variant_new_tuple(rational, 2);
674 g_variant_builder_add_value(&gvb, tuple);
676 *data = g_variant_builder_end(&gvb);
678 case SR_CONF_TRIGGER_SOURCE:
679 *data = g_variant_new_strv(trigger_sources,
680 ARRAY_SIZE(trigger_sources));
682 case SR_CONF_TRIGGER_SLOPE:
683 *data = g_variant_new_strv(trigger_slopes,
684 ARRAY_SIZE(trigger_slopes));
691 case SR_CONF_DEVICE_OPTIONS:
692 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
693 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
695 case SR_CONF_COUPLING:
696 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
699 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
700 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
701 rational[0] = g_variant_new_uint64(vdivs[i][0]);
702 rational[1] = g_variant_new_uint64(vdivs[i][1]);
703 tuple = g_variant_new_tuple(rational, 2);
704 g_variant_builder_add_value(&gvb, tuple);
706 *data = g_variant_builder_end(&gvb);
716 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
719 struct sr_datafeed_packet packet;
720 struct sr_datafeed_analog analog;
721 struct dev_context *devc;
722 float ch1, ch2, range;
723 int num_channels, data_offset, i;
726 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
727 packet.type = SR_DF_ANALOG;
728 packet.payload = &analog;
729 /* TODO: support for 5xxx series 9-bit samples */
730 analog.channels = devc->enabled_channels;
731 analog.num_samples = num_samples;
732 analog.mq = SR_MQ_VOLTAGE;
733 analog.unit = SR_UNIT_VOLT;
735 /* TODO: Check malloc return value. */
736 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
738 for (i = 0; i < analog.num_samples; i++) {
740 * The device always sends data for both channels. If a channel
741 * is disabled, it contains a copy of the enabled channel's
742 * data. However, we only send the requested channels to
745 * Voltage values are encoded as a value 0-255 (0-512 on the
746 * DSO-5200*), where the value is a point in the range
747 * represented by the vdiv setting. There are 8 vertical divs,
748 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
751 /* TODO: Support for DSO-5xxx series 9-bit samples. */
752 if (devc->ch1_enabled) {
753 range = ((float)vdivs[devc->voltage[0]][0] / vdivs[devc->voltage[0]][1]) * 8;
754 ch1 = range / 255 * *(buf + i * 2 + 1);
755 /* Value is centered around 0V. */
757 analog.data[data_offset++] = ch1;
759 if (devc->ch2_enabled) {
760 range = ((float)vdivs[devc->voltage[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
761 ch2 = range / 255 * *(buf + i * 2);
763 analog.data[data_offset++] = ch2;
766 sr_session_send(devc->cb_data, &packet);
770 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
771 * Only channel data comes in asynchronously, and all transfers for this are
772 * queued up beforehand, so this just needs to chuck the incoming data onto
773 * the libsigrok session bus.
775 static void receive_transfer(struct libusb_transfer *transfer)
777 struct sr_datafeed_packet packet;
778 struct sr_dev_inst *sdi;
779 struct dev_context *devc;
780 int num_samples, pre;
782 sdi = transfer->user_data;
784 sr_spew("receive_transfer(): status %d received %d bytes.",
785 transfer->status, transfer->actual_length);
787 if (transfer->actual_length == 0)
788 /* Nothing to send to the bus. */
791 num_samples = transfer->actual_length / 2;
793 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
794 devc->samp_received + num_samples, devc->framesize);
797 * The device always sends a full frame, but the beginning of the frame
798 * doesn't represent the trigger point. The offset at which the trigger
799 * happened came in with the capture state, so we need to start sending
800 * from there up the session bus. The samples in the frame buffer
801 * before that trigger point came after the end of the device's frame
802 * buffer was reached, and it wrapped around to overwrite up until the
805 if (devc->samp_received < devc->trigger_offset) {
806 /* Trigger point not yet reached. */
807 if (devc->samp_received + num_samples < devc->trigger_offset) {
808 /* The entire chunk is before the trigger point. */
809 memcpy(devc->framebuf + devc->samp_buffered * 2,
810 transfer->buffer, num_samples * 2);
811 devc->samp_buffered += num_samples;
814 * This chunk hits or overruns the trigger point.
815 * Store the part before the trigger fired, and
816 * send the rest up to the session bus.
818 pre = devc->trigger_offset - devc->samp_received;
819 memcpy(devc->framebuf + devc->samp_buffered * 2,
820 transfer->buffer, pre * 2);
821 devc->samp_buffered += pre;
823 /* The rest of this chunk starts with the trigger point. */
824 sr_dbg("Reached trigger point, %d samples buffered.",
825 devc->samp_buffered);
827 /* Avoid the corner case where the chunk ended at
828 * exactly the trigger point. */
829 if (num_samples > pre)
830 send_chunk(sdi, transfer->buffer + pre * 2,
834 /* Already past the trigger point, just send it all out. */
835 send_chunk(sdi, transfer->buffer,
839 devc->samp_received += num_samples;
841 /* Everything in this transfer was either copied to the buffer or
842 * sent to the session bus. */
843 g_free(transfer->buffer);
844 libusb_free_transfer(transfer);
846 if (devc->samp_received >= devc->framesize) {
847 /* That was the last chunk in this frame. Send the buffered
848 * pre-trigger samples out now, in one big chunk. */
849 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
850 devc->samp_buffered);
851 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
853 /* Mark the end of this frame. */
854 packet.type = SR_DF_FRAME_END;
855 sr_session_send(devc->cb_data, &packet);
857 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
858 /* Terminate session */
859 devc->dev_state = STOPPING;
861 devc->dev_state = NEW_CAPTURE;
866 static int handle_event(int fd, int revents, void *cb_data)
868 const struct sr_dev_inst *sdi;
869 struct sr_datafeed_packet packet;
871 struct dev_context *devc;
872 struct drv_context *drvc = di->priv;
874 uint32_t trigger_offset;
875 uint8_t capturestate;
882 if (devc->dev_state == STOPPING) {
883 /* We've been told to wind up the acquisition. */
884 sr_dbg("Stopping acquisition.");
886 * TODO: Doesn't really cancel pending transfers so they might
887 * come in after SR_DF_END is sent.
889 usb_source_remove(sdi->session, drvc->sr_ctx);
891 packet.type = SR_DF_END;
892 sr_session_send(sdi, &packet);
894 devc->dev_state = IDLE;
899 /* Always handle pending libusb events. */
900 tv.tv_sec = tv.tv_usec = 0;
901 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
904 if (devc->dev_state == NEW_CAPTURE) {
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.");
912 devc->dev_state = CAPTURE;
915 if (devc->dev_state != CAPTURE)
918 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
921 sr_dbg("Capturestate %d.", capturestate);
922 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
923 switch (capturestate) {
925 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
926 devc->capture_empty_count = 0;
927 if (dso_capture_start(sdi) != SR_OK)
929 if (dso_enable_trigger(sdi) != SR_OK)
931 // if (dso_force_trigger(sdi) != SR_OK)
933 sr_dbg("Successfully requested next chunk.");
936 case CAPTURE_FILLING:
939 case CAPTURE_READY_8BIT:
940 /* Remember where in the captured frame the trigger is. */
941 devc->trigger_offset = trigger_offset;
943 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
944 /* TODO: Check malloc return value. */
945 devc->framebuf = g_try_malloc(devc->framesize * num_channels * 2);
946 devc->samp_buffered = devc->samp_received = 0;
948 /* Tell the scope to send us the first frame. */
949 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
953 * Don't hit the state machine again until we're done fetching
954 * the data we just told the scope to send.
956 devc->dev_state = FETCH_DATA;
958 /* Tell the frontend a new frame is on the way. */
959 packet.type = SR_DF_FRAME_BEGIN;
960 sr_session_send(sdi, &packet);
962 case CAPTURE_READY_9BIT:
964 sr_err("Not yet supported.");
966 case CAPTURE_TIMEOUT:
967 /* Doesn't matter, we'll try again next time. */
970 sr_dbg("Unknown capture state: %d.", capturestate);
977 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
979 struct dev_context *devc;
980 struct drv_context *drvc = di->priv;
982 if (sdi->status != SR_ST_ACTIVE)
983 return SR_ERR_DEV_CLOSED;
986 devc->cb_data = cb_data;
988 if (configure_channels(sdi) != SR_OK) {
989 sr_err("Failed to configure channels.");
993 if (dso_init(sdi) != SR_OK)
996 if (dso_capture_start(sdi) != SR_OK)
999 devc->dev_state = CAPTURE;
1000 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
1002 /* Send header packet to the session bus. */
1003 std_session_send_df_header(cb_data, LOG_PREFIX);
1008 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1010 struct dev_context *devc;
1014 if (sdi->status != SR_ST_ACTIVE)
1018 devc->dev_state = STOPPING;
1023 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
1024 .name = "hantek-dso",
1025 .longname = "Hantek DSO",
1030 .dev_list = dev_list,
1031 .dev_clear = dev_clear,
1032 .config_get = config_get,
1033 .config_set = config_set,
1034 .config_list = config_list,
1035 .dev_open = dev_open,
1036 .dev_close = dev_close,
1037 .dev_acquisition_start = dev_acquisition_start,
1038 .dev_acquisition_stop = dev_acquisition_stop,