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_HDIV | 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;
163 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
165 static struct sr_dev_inst *dso_dev_new(const struct dso_profile *prof)
167 struct sr_dev_inst *sdi;
168 struct sr_channel *ch;
169 struct sr_channel_group *cg;
170 struct drv_context *drvc;
171 struct dev_context *devc;
174 sdi = g_malloc0(sizeof(struct sr_dev_inst));
175 sdi->status = SR_ST_INITIALIZING;
176 sdi->vendor = g_strdup(prof->vendor);
177 sdi->model = g_strdup(prof->model);
178 sdi->driver = &hantek_dso_driver_info;
181 * Add only the real channels -- EXT isn't a source of data, only
182 * a trigger source internal to the device.
184 for (i = 0; channel_names[i]; i++) {
185 ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]);
186 cg = g_malloc0(sizeof(struct sr_channel_group));
187 cg->name = g_strdup(channel_names[i]);
188 cg->channels = g_slist_append(cg->channels, ch);
189 sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
192 devc = g_malloc0(sizeof(struct dev_context));
193 devc->profile = prof;
194 devc->dev_state = IDLE;
195 devc->timebase = DEFAULT_TIMEBASE;
196 devc->ch1_enabled = TRUE;
197 devc->ch2_enabled = TRUE;
198 devc->voltage[0] = DEFAULT_VOLTAGE;
199 devc->voltage[1] = DEFAULT_VOLTAGE;
200 devc->coupling[0] = DEFAULT_COUPLING;
201 devc->coupling[1] = DEFAULT_COUPLING;
202 devc->voffset_ch1 = DEFAULT_VERT_OFFSET;
203 devc->voffset_ch2 = DEFAULT_VERT_OFFSET;
204 devc->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
205 devc->framesize = DEFAULT_FRAMESIZE;
206 devc->triggerslope = SLOPE_POSITIVE;
207 devc->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
208 devc->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
210 drvc = hantek_dso_driver_info.priv;
211 drvc->instances = g_slist_append(drvc->instances, sdi);
216 static int configure_channels(const struct sr_dev_inst *sdi)
218 struct dev_context *devc;
219 struct sr_channel *ch;
225 g_slist_free(devc->enabled_channels);
226 devc->ch1_enabled = devc->ch2_enabled = FALSE;
227 for (l = sdi->channels, p = 0; l; l = l->next, p++) {
230 devc->ch1_enabled = ch->enabled;
232 devc->ch2_enabled = ch->enabled;
234 devc->enabled_channels = g_slist_append(devc->enabled_channels, ch);
240 static void clear_dev_context(void *priv)
242 struct dev_context *devc;
245 g_free(devc->triggersource);
246 g_slist_free(devc->enabled_channels);
250 static int dev_clear(const struct sr_dev_driver *di)
252 return std_dev_clear(di, clear_dev_context);
255 static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
257 return std_init(sr_ctx, di, LOG_PREFIX);
260 static GSList *scan(struct sr_dev_driver *di, GSList *options)
262 struct drv_context *drvc;
263 struct dev_context *devc;
264 struct sr_dev_inst *sdi;
265 struct sr_usb_dev_inst *usb;
266 struct sr_config *src;
267 const struct dso_profile *prof;
268 GSList *l, *devices, *conn_devices;
269 struct libusb_device_descriptor des;
270 libusb_device **devlist;
273 char connection_id[64];
280 for (l = options; l; l = l->next) {
282 if (src->key == SR_CONF_CONN) {
283 conn = g_variant_get_string(src->data, NULL);
288 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
292 /* Find all Hantek DSO devices and upload firmware to all of them. */
293 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
294 for (i = 0; devlist[i]; i++) {
297 for (l = conn_devices; l; l = l->next) {
299 if (usb->bus == libusb_get_bus_number(devlist[i])
300 && usb->address == libusb_get_device_address(devlist[i]))
304 /* This device matched none of the ones that
305 * matched the conn specification. */
309 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
310 sr_err("Failed to get device descriptor: %s.",
311 libusb_error_name(ret));
315 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
318 for (j = 0; dev_profiles[j].orig_vid; j++) {
319 if (des.idVendor == dev_profiles[j].orig_vid
320 && des.idProduct == dev_profiles[j].orig_pid) {
321 /* Device matches the pre-firmware profile. */
322 prof = &dev_profiles[j];
323 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
324 sdi = dso_dev_new(prof);
325 sdi->connection_id = g_strdup(connection_id);
326 devices = g_slist_append(devices, sdi);
328 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
329 prof->firmware) == SR_OK)
330 /* Remember when the firmware on this device was updated */
331 devc->fw_updated = g_get_monotonic_time();
333 sr_err("Firmware upload failed");
334 /* Dummy USB address of 0xff will get overwritten later. */
335 sdi->conn = sr_usb_dev_inst_new(
336 libusb_get_bus_number(devlist[i]), 0xff, NULL);
338 } else if (des.idVendor == dev_profiles[j].fw_vid
339 && des.idProduct == dev_profiles[j].fw_pid) {
340 /* Device matches the post-firmware profile. */
341 prof = &dev_profiles[j];
342 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
343 sdi = dso_dev_new(prof);
344 sdi->connection_id = g_strdup(connection_id);
345 sdi->status = SR_ST_INACTIVE;
346 devices = g_slist_append(devices, sdi);
347 sdi->inst_type = SR_INST_USB;
348 sdi->conn = sr_usb_dev_inst_new(
349 libusb_get_bus_number(devlist[i]),
350 libusb_get_device_address(devlist[i]), NULL);
355 /* not a supported VID/PID */
358 libusb_free_device_list(devlist, 1);
363 static GSList *dev_list(const struct sr_dev_driver *di)
365 return ((struct drv_context *)(di->priv))->instances;
368 static int dev_open(struct sr_dev_inst *sdi)
370 struct dev_context *devc;
371 struct sr_usb_dev_inst *usb;
372 int64_t timediff_us, timediff_ms;
379 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
380 * for the FX2 to renumerate.
383 if (devc->fw_updated > 0) {
384 sr_info("Waiting for device to reset.");
385 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
386 g_usleep(300 * 1000);
388 while (timediff_ms < MAX_RENUM_DELAY_MS) {
389 if ((err = dso_open(sdi)) == SR_OK)
391 g_usleep(100 * 1000);
392 timediff_us = g_get_monotonic_time() - devc->fw_updated;
393 timediff_ms = timediff_us / 1000;
394 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
396 sr_info("Device came back after %d ms.", timediff_ms);
402 sr_err("Unable to open device.");
406 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
408 sr_err("Unable to claim interface: %s.",
409 libusb_error_name(err));
416 static int dev_close(struct sr_dev_inst *sdi)
423 static int cleanup(const struct sr_dev_driver *di)
425 return dev_clear(di);
428 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
429 const struct sr_channel_group *cg)
431 struct dev_context *devc;
432 struct sr_usb_dev_inst *usb;
434 const uint64_t *vdiv;
440 case SR_CONF_NUM_HDIV:
441 *data = g_variant_new_int32(NUM_TIMEBASE);
443 case SR_CONF_NUM_VDIV:
444 *data = g_variant_new_int32(NUM_VDIV);
458 if (usb->address == 255)
459 /* Device still needs to re-enumerate after firmware
460 * upload, so we don't know its (future) address. */
462 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
463 *data = g_variant_new_string(str);
465 case SR_CONF_TIMEBASE:
466 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
467 timebases[devc->timebase][1]);
469 case SR_CONF_BUFFERSIZE:
470 *data = g_variant_new_uint64(devc->framesize);
472 case SR_CONF_TRIGGER_SOURCE:
473 *data = g_variant_new_string(devc->triggersource);
475 case SR_CONF_TRIGGER_SLOPE:
476 if (devc->triggerslope == SLOPE_POSITIVE)
480 *data = g_variant_new_string(s);
482 case SR_CONF_HORIZ_TRIGGERPOS:
483 *data = g_variant_new_double(devc->triggerposition);
489 if (sdi->channel_groups->data == cg)
491 else if (sdi->channel_groups->next->data == cg)
497 *data = g_variant_new_boolean(devc->filter[ch_idx]);
500 vdiv = vdivs[devc->voltage[ch_idx]];
501 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
503 case SR_CONF_COUPLING:
504 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
512 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
513 const struct sr_channel_group *cg)
515 struct dev_context *devc;
517 uint64_t tmp_u64, p, q;
518 int tmp_int, ch_idx, ret;
522 if (sdi->status != SR_ST_ACTIVE)
523 return SR_ERR_DEV_CLOSED;
529 case SR_CONF_LIMIT_FRAMES:
530 devc->limit_frames = g_variant_get_uint64(data);
532 case SR_CONF_TRIGGER_SLOPE:
533 tmp_str = g_variant_get_string(data, NULL);
534 if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
536 devc->triggerslope = (tmp_str[0] == 'r')
537 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
539 case SR_CONF_HORIZ_TRIGGERPOS:
540 tmp_double = g_variant_get_double(data);
541 if (tmp_double < 0.0 || tmp_double > 1.0) {
542 sr_err("Trigger position should be between 0.0 and 1.0.");
545 devc->triggerposition = tmp_double;
547 case SR_CONF_BUFFERSIZE:
548 tmp_u64 = g_variant_get_uint64(data);
549 for (i = 0; i < 2; i++) {
550 if (devc->profile->buffersizes[i] == tmp_u64) {
551 devc->framesize = tmp_u64;
558 case SR_CONF_TIMEBASE:
559 g_variant_get(data, "(tt)", &p, &q);
561 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
562 if (timebases[i][0] == p && timebases[i][1] == q) {
568 devc->timebase = tmp_int;
572 case SR_CONF_TRIGGER_SOURCE:
573 tmp_str = g_variant_get_string(data, NULL);
574 for (i = 0; trigger_sources[i]; i++) {
575 if (!strcmp(tmp_str, trigger_sources[i])) {
576 devc->triggersource = g_strdup(tmp_str);
580 if (trigger_sources[i] == 0)
588 if (sdi->channel_groups->data == cg)
590 else if (sdi->channel_groups->next->data == cg)
596 devc->filter[ch_idx] = g_variant_get_boolean(data);
599 g_variant_get(data, "(tt)", &p, &q);
601 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
602 if (vdivs[i][0] == p && vdivs[i][1] == q) {
608 devc->voltage[ch_idx] = tmp_int;
612 case SR_CONF_COUPLING:
613 tmp_str = g_variant_get_string(data, NULL);
614 for (i = 0; coupling[i]; i++) {
615 if (!strcmp(tmp_str, coupling[i])) {
616 devc->coupling[ch_idx] = i;
620 if (coupling[i] == 0)
632 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
633 const struct sr_channel_group *cg)
635 struct dev_context *devc;
636 GVariant *tuple, *rational[2];
640 if (key == SR_CONF_SCAN_OPTIONS) {
641 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
642 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
644 } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
645 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
646 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
655 case SR_CONF_DEVICE_OPTIONS:
656 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
657 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
659 case SR_CONF_BUFFERSIZE:
663 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
664 devc->profile->buffersizes, 2, sizeof(uint64_t));
666 case SR_CONF_TIMEBASE:
667 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
668 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
669 rational[0] = g_variant_new_uint64(timebases[i][0]);
670 rational[1] = g_variant_new_uint64(timebases[i][1]);
671 tuple = g_variant_new_tuple(rational, 2);
672 g_variant_builder_add_value(&gvb, tuple);
674 *data = g_variant_builder_end(&gvb);
676 case SR_CONF_TRIGGER_SOURCE:
677 *data = g_variant_new_strv(trigger_sources,
678 ARRAY_SIZE(trigger_sources));
680 case SR_CONF_TRIGGER_SLOPE:
681 *data = g_variant_new_strv(trigger_slopes,
682 ARRAY_SIZE(trigger_slopes));
689 case SR_CONF_DEVICE_OPTIONS:
690 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
691 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
693 case SR_CONF_COUPLING:
694 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
697 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
698 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
699 rational[0] = g_variant_new_uint64(vdivs[i][0]);
700 rational[1] = g_variant_new_uint64(vdivs[i][1]);
701 tuple = g_variant_new_tuple(rational, 2);
702 g_variant_builder_add_value(&gvb, tuple);
704 *data = g_variant_builder_end(&gvb);
714 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
717 struct sr_datafeed_packet packet;
718 struct sr_datafeed_analog analog;
719 struct dev_context *devc;
720 float ch1, ch2, range;
721 int num_channels, data_offset, i;
724 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
725 packet.type = SR_DF_ANALOG;
726 packet.payload = &analog;
727 /* TODO: support for 5xxx series 9-bit samples */
728 analog.channels = devc->enabled_channels;
729 analog.num_samples = num_samples;
730 analog.mq = SR_MQ_VOLTAGE;
731 analog.unit = SR_UNIT_VOLT;
733 /* TODO: Check malloc return value. */
734 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
736 for (i = 0; i < analog.num_samples; i++) {
738 * The device always sends data for both channels. If a channel
739 * is disabled, it contains a copy of the enabled channel's
740 * data. However, we only send the requested channels to
743 * Voltage values are encoded as a value 0-255 (0-512 on the
744 * DSO-5200*), where the value is a point in the range
745 * represented by the vdiv setting. There are 8 vertical divs,
746 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
749 /* TODO: Support for DSO-5xxx series 9-bit samples. */
750 if (devc->ch1_enabled) {
751 range = ((float)vdivs[devc->voltage[0]][0] / vdivs[devc->voltage[0]][1]) * 8;
752 ch1 = range / 255 * *(buf + i * 2 + 1);
753 /* Value is centered around 0V. */
755 analog.data[data_offset++] = ch1;
757 if (devc->ch2_enabled) {
758 range = ((float)vdivs[devc->voltage[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
759 ch2 = range / 255 * *(buf + i * 2);
761 analog.data[data_offset++] = ch2;
764 sr_session_send(devc->cb_data, &packet);
768 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
769 * Only channel data comes in asynchronously, and all transfers for this are
770 * queued up beforehand, so this just needs to chuck the incoming data onto
771 * the libsigrok session bus.
773 static void receive_transfer(struct libusb_transfer *transfer)
775 struct sr_datafeed_packet packet;
776 struct sr_dev_inst *sdi;
777 struct dev_context *devc;
778 int num_samples, pre;
780 sdi = transfer->user_data;
782 sr_spew("receive_transfer(): status %d received %d bytes.",
783 transfer->status, transfer->actual_length);
785 if (transfer->actual_length == 0)
786 /* Nothing to send to the bus. */
789 num_samples = transfer->actual_length / 2;
791 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
792 devc->samp_received + num_samples, devc->framesize);
795 * The device always sends a full frame, but the beginning of the frame
796 * doesn't represent the trigger point. The offset at which the trigger
797 * happened came in with the capture state, so we need to start sending
798 * from there up the session bus. The samples in the frame buffer
799 * before that trigger point came after the end of the device's frame
800 * buffer was reached, and it wrapped around to overwrite up until the
803 if (devc->samp_received < devc->trigger_offset) {
804 /* Trigger point not yet reached. */
805 if (devc->samp_received + num_samples < devc->trigger_offset) {
806 /* The entire chunk is before the trigger point. */
807 memcpy(devc->framebuf + devc->samp_buffered * 2,
808 transfer->buffer, num_samples * 2);
809 devc->samp_buffered += num_samples;
812 * This chunk hits or overruns the trigger point.
813 * Store the part before the trigger fired, and
814 * send the rest up to the session bus.
816 pre = devc->trigger_offset - devc->samp_received;
817 memcpy(devc->framebuf + devc->samp_buffered * 2,
818 transfer->buffer, pre * 2);
819 devc->samp_buffered += pre;
821 /* The rest of this chunk starts with the trigger point. */
822 sr_dbg("Reached trigger point, %d samples buffered.",
823 devc->samp_buffered);
825 /* Avoid the corner case where the chunk ended at
826 * exactly the trigger point. */
827 if (num_samples > pre)
828 send_chunk(sdi, transfer->buffer + pre * 2,
832 /* Already past the trigger point, just send it all out. */
833 send_chunk(sdi, transfer->buffer,
837 devc->samp_received += num_samples;
839 /* Everything in this transfer was either copied to the buffer or
840 * sent to the session bus. */
841 g_free(transfer->buffer);
842 libusb_free_transfer(transfer);
844 if (devc->samp_received >= devc->framesize) {
845 /* That was the last chunk in this frame. Send the buffered
846 * pre-trigger samples out now, in one big chunk. */
847 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
848 devc->samp_buffered);
849 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
851 /* Mark the end of this frame. */
852 packet.type = SR_DF_FRAME_END;
853 sr_session_send(devc->cb_data, &packet);
855 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
856 /* Terminate session */
857 devc->dev_state = STOPPING;
859 devc->dev_state = NEW_CAPTURE;
864 static int handle_event(int fd, int revents, void *cb_data)
866 const struct sr_dev_inst *sdi;
867 struct sr_datafeed_packet packet;
869 struct sr_dev_driver *di;
870 struct dev_context *devc;
871 struct drv_context *drvc;
873 uint32_t trigger_offset;
874 uint8_t capturestate;
883 if (devc->dev_state == STOPPING) {
884 /* We've been told to wind up the acquisition. */
885 sr_dbg("Stopping acquisition.");
887 * TODO: Doesn't really cancel pending transfers so they might
888 * come in after SR_DF_END is sent.
890 usb_source_remove(sdi->session, drvc->sr_ctx);
892 packet.type = SR_DF_END;
893 sr_session_send(sdi, &packet);
895 devc->dev_state = IDLE;
900 /* Always handle pending libusb events. */
901 tv.tv_sec = tv.tv_usec = 0;
902 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
905 if (devc->dev_state == NEW_CAPTURE) {
906 if (dso_capture_start(sdi) != SR_OK)
908 if (dso_enable_trigger(sdi) != SR_OK)
910 // if (dso_force_trigger(sdi) != SR_OK)
912 sr_dbg("Successfully requested next chunk.");
913 devc->dev_state = CAPTURE;
916 if (devc->dev_state != CAPTURE)
919 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
922 sr_dbg("Capturestate %d.", capturestate);
923 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
924 switch (capturestate) {
926 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
927 devc->capture_empty_count = 0;
928 if (dso_capture_start(sdi) != SR_OK)
930 if (dso_enable_trigger(sdi) != SR_OK)
932 // if (dso_force_trigger(sdi) != SR_OK)
934 sr_dbg("Successfully requested next chunk.");
937 case CAPTURE_FILLING:
940 case CAPTURE_READY_8BIT:
941 /* Remember where in the captured frame the trigger is. */
942 devc->trigger_offset = trigger_offset;
944 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
945 /* TODO: Check malloc return value. */
946 devc->framebuf = g_try_malloc(devc->framesize * num_channels * 2);
947 devc->samp_buffered = devc->samp_received = 0;
949 /* Tell the scope to send us the first frame. */
950 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
954 * Don't hit the state machine again until we're done fetching
955 * the data we just told the scope to send.
957 devc->dev_state = FETCH_DATA;
959 /* Tell the frontend a new frame is on the way. */
960 packet.type = SR_DF_FRAME_BEGIN;
961 sr_session_send(sdi, &packet);
963 case CAPTURE_READY_9BIT:
965 sr_err("Not yet supported.");
967 case CAPTURE_TIMEOUT:
968 /* Doesn't matter, we'll try again next time. */
971 sr_dbg("Unknown capture state: %d.", capturestate);
978 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
980 struct dev_context *devc;
981 struct sr_dev_driver *di = sdi->driver;
982 struct drv_context *drvc = di->priv;
984 if (sdi->status != SR_ST_ACTIVE)
985 return SR_ERR_DEV_CLOSED;
988 devc->cb_data = cb_data;
990 if (configure_channels(sdi) != SR_OK) {
991 sr_err("Failed to configure channels.");
995 if (dso_init(sdi) != SR_OK)
998 if (dso_capture_start(sdi) != SR_OK)
1001 devc->dev_state = CAPTURE;
1002 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
1004 /* Send header packet to the session bus. */
1005 std_session_send_df_header(cb_data, LOG_PREFIX);
1010 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1012 struct dev_context *devc;
1016 if (sdi->status != SR_ST_ACTIVE)
1020 devc->dev_state = STOPPING;
1025 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
1026 .name = "hantek-dso",
1027 .longname = "Hantek DSO",
1032 .dev_list = dev_list,
1033 .dev_clear = dev_clear,
1034 .config_get = config_get,
1035 .config_set = config_set,
1036 .config_list = config_list,
1037 .dev_open = dev_open,
1038 .dev_close = dev_close,
1039 .dev_acquisition_start = dev_acquisition_start,
1040 .dev_acquisition_stop = dev_acquisition_stop,