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 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
165 static int dev_acquisition_stop(struct sr_dev_inst *sdi);
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 GSList *scan(struct sr_dev_driver *di, GSList *options)
259 struct drv_context *drvc;
260 struct dev_context *devc;
261 struct sr_dev_inst *sdi;
262 struct sr_usb_dev_inst *usb;
263 struct sr_config *src;
264 const struct dso_profile *prof;
265 GSList *l, *devices, *conn_devices;
266 struct libusb_device_descriptor des;
267 libusb_device **devlist;
270 char connection_id[64];
277 for (l = options; l; l = l->next) {
279 if (src->key == SR_CONF_CONN) {
280 conn = g_variant_get_string(src->data, NULL);
285 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
289 /* Find all Hantek DSO devices and upload firmware to all of them. */
290 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
291 for (i = 0; devlist[i]; i++) {
294 for (l = conn_devices; l; l = l->next) {
296 if (usb->bus == libusb_get_bus_number(devlist[i])
297 && usb->address == libusb_get_device_address(devlist[i]))
301 /* This device matched none of the ones that
302 * matched the conn specification. */
306 libusb_get_device_descriptor(devlist[i], &des);
308 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
311 for (j = 0; dev_profiles[j].orig_vid; j++) {
312 if (des.idVendor == dev_profiles[j].orig_vid
313 && des.idProduct == dev_profiles[j].orig_pid) {
314 /* Device matches the pre-firmware profile. */
315 prof = &dev_profiles[j];
316 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
317 sdi = dso_dev_new(prof);
318 sdi->connection_id = g_strdup(connection_id);
319 devices = g_slist_append(devices, sdi);
321 if (ezusb_upload_firmware(drvc->sr_ctx, devlist[i],
322 USB_CONFIGURATION, prof->firmware) == SR_OK)
323 /* Remember when the firmware on this device was updated */
324 devc->fw_updated = g_get_monotonic_time();
326 sr_err("Firmware upload failed");
327 /* Dummy USB address of 0xff will get overwritten later. */
328 sdi->conn = sr_usb_dev_inst_new(
329 libusb_get_bus_number(devlist[i]), 0xff, NULL);
331 } else if (des.idVendor == dev_profiles[j].fw_vid
332 && des.idProduct == dev_profiles[j].fw_pid) {
333 /* Device matches the post-firmware profile. */
334 prof = &dev_profiles[j];
335 sr_dbg("Found a %s %s.", prof->vendor, prof->model);
336 sdi = dso_dev_new(prof);
337 sdi->connection_id = g_strdup(connection_id);
338 sdi->status = SR_ST_INACTIVE;
339 devices = g_slist_append(devices, sdi);
340 sdi->inst_type = SR_INST_USB;
341 sdi->conn = sr_usb_dev_inst_new(
342 libusb_get_bus_number(devlist[i]),
343 libusb_get_device_address(devlist[i]), NULL);
348 /* not a supported VID/PID */
351 libusb_free_device_list(devlist, 1);
356 static int dev_open(struct sr_dev_inst *sdi)
358 struct dev_context *devc;
359 struct sr_usb_dev_inst *usb;
360 int64_t timediff_us, timediff_ms;
367 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
368 * for the FX2 to renumerate.
371 if (devc->fw_updated > 0) {
372 sr_info("Waiting for device to reset.");
373 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
374 g_usleep(300 * 1000);
376 while (timediff_ms < MAX_RENUM_DELAY_MS) {
377 if ((err = dso_open(sdi)) == SR_OK)
379 g_usleep(100 * 1000);
380 timediff_us = g_get_monotonic_time() - devc->fw_updated;
381 timediff_ms = timediff_us / 1000;
382 sr_spew("Waited %" PRIi64 " ms.", timediff_ms);
384 sr_info("Device came back after %" PRIi64 " ms.", timediff_ms);
390 sr_err("Unable to open device.");
394 err = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
396 sr_err("Unable to claim interface: %s.",
397 libusb_error_name(err));
404 static int dev_close(struct sr_dev_inst *sdi)
411 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
412 const struct sr_channel_group *cg)
414 struct dev_context *devc;
415 struct sr_usb_dev_inst *usb;
418 const uint64_t *vdiv;
422 case SR_CONF_NUM_HDIV:
423 *data = g_variant_new_int32(NUM_TIMEBASE);
425 case SR_CONF_NUM_VDIV:
426 *data = g_variant_new_int32(NUM_VDIV);
440 if (usb->address == 255)
441 /* Device still needs to re-enumerate after firmware
442 * upload, so we don't know its (future) address. */
444 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
445 *data = g_variant_new_string(str);
447 case SR_CONF_TIMEBASE:
448 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
449 timebases[devc->timebase][1]);
451 case SR_CONF_BUFFERSIZE:
452 *data = g_variant_new_uint64(devc->framesize);
454 case SR_CONF_TRIGGER_SOURCE:
455 *data = g_variant_new_string(devc->triggersource);
457 case SR_CONF_TRIGGER_SLOPE:
458 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
459 *data = g_variant_new_string(s);
461 case SR_CONF_HORIZ_TRIGGERPOS:
462 *data = g_variant_new_double(devc->triggerposition);
468 if (sdi->channel_groups->data == cg)
470 else if (sdi->channel_groups->next->data == cg)
476 *data = g_variant_new_boolean(devc->filter[ch_idx]);
479 vdiv = vdivs[devc->voltage[ch_idx]];
480 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
482 case SR_CONF_COUPLING:
483 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
491 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
492 const struct sr_channel_group *cg)
494 struct dev_context *devc;
496 uint64_t tmp_u64, p, q;
497 int tmp_int, ch_idx, ret;
501 if (sdi->status != SR_ST_ACTIVE)
502 return SR_ERR_DEV_CLOSED;
508 case SR_CONF_LIMIT_FRAMES:
509 devc->limit_frames = g_variant_get_uint64(data);
511 case SR_CONF_TRIGGER_SLOPE:
512 tmp_str = g_variant_get_string(data, NULL);
513 if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
515 devc->triggerslope = (tmp_str[0] == 'r')
516 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
518 case SR_CONF_HORIZ_TRIGGERPOS:
519 tmp_double = g_variant_get_double(data);
520 if (tmp_double < 0.0 || tmp_double > 1.0) {
521 sr_err("Trigger position should be between 0.0 and 1.0.");
524 devc->triggerposition = tmp_double;
526 case SR_CONF_BUFFERSIZE:
527 tmp_u64 = g_variant_get_uint64(data);
528 for (i = 0; i < NUM_BUFFER_SIZES; i++) {
529 if (devc->profile->buffersizes[i] == tmp_u64) {
530 devc->framesize = tmp_u64;
534 if (i == NUM_BUFFER_SIZES)
537 case SR_CONF_TIMEBASE:
538 g_variant_get(data, "(tt)", &p, &q);
540 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
541 if (timebases[i][0] == p && timebases[i][1] == q) {
547 devc->timebase = tmp_int;
551 case SR_CONF_TRIGGER_SOURCE:
552 tmp_str = g_variant_get_string(data, NULL);
553 for (i = 0; trigger_sources[i]; i++) {
554 if (!strcmp(tmp_str, trigger_sources[i])) {
555 devc->triggersource = g_strdup(tmp_str);
559 if (trigger_sources[i] == 0)
567 if (sdi->channel_groups->data == cg)
569 else if (sdi->channel_groups->next->data == cg)
575 devc->filter[ch_idx] = g_variant_get_boolean(data);
578 g_variant_get(data, "(tt)", &p, &q);
580 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
581 if (vdivs[i][0] == p && vdivs[i][1] == q) {
587 devc->voltage[ch_idx] = tmp_int;
591 case SR_CONF_COUPLING:
592 tmp_str = g_variant_get_string(data, NULL);
593 for (i = 0; coupling[i]; i++) {
594 if (!strcmp(tmp_str, coupling[i])) {
595 devc->coupling[ch_idx] = i;
599 if (coupling[i] == 0)
611 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
612 const struct sr_channel_group *cg)
614 struct dev_context *devc;
615 GVariant *tuple, *rational[2];
619 if (key == SR_CONF_SCAN_OPTIONS) {
620 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
621 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
623 } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
624 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
625 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
634 case SR_CONF_DEVICE_OPTIONS:
635 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
636 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
638 case SR_CONF_BUFFERSIZE:
642 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
643 devc->profile->buffersizes, NUM_BUFFER_SIZES, sizeof(uint64_t));
645 case SR_CONF_TIMEBASE:
646 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
647 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
648 rational[0] = g_variant_new_uint64(timebases[i][0]);
649 rational[1] = g_variant_new_uint64(timebases[i][1]);
650 tuple = g_variant_new_tuple(rational, 2);
651 g_variant_builder_add_value(&gvb, tuple);
653 *data = g_variant_builder_end(&gvb);
655 case SR_CONF_TRIGGER_SOURCE:
656 *data = g_variant_new_strv(trigger_sources,
657 ARRAY_SIZE(trigger_sources));
659 case SR_CONF_TRIGGER_SLOPE:
660 *data = g_variant_new_strv(trigger_slopes,
661 ARRAY_SIZE(trigger_slopes));
668 case SR_CONF_DEVICE_OPTIONS:
669 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
670 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
672 case SR_CONF_COUPLING:
673 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
676 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
677 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
678 rational[0] = g_variant_new_uint64(vdivs[i][0]);
679 rational[1] = g_variant_new_uint64(vdivs[i][1]);
680 tuple = g_variant_new_tuple(rational, 2);
681 g_variant_builder_add_value(&gvb, tuple);
683 *data = g_variant_builder_end(&gvb);
693 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
696 struct sr_datafeed_packet packet;
697 struct sr_datafeed_analog_old analog;
698 struct dev_context *devc;
699 float ch1, ch2, range;
700 int num_channels, data_offset, i;
703 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
704 packet.type = SR_DF_ANALOG_OLD;
705 packet.payload = &analog;
706 /* TODO: support for 5xxx series 9-bit samples */
707 analog.channels = devc->enabled_channels;
708 analog.num_samples = num_samples;
709 analog.mq = SR_MQ_VOLTAGE;
710 analog.unit = SR_UNIT_VOLT;
712 /* TODO: Check malloc return value. */
713 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
715 for (i = 0; i < analog.num_samples; i++) {
717 * The device always sends data for both channels. If a channel
718 * is disabled, it contains a copy of the enabled channel's
719 * data. However, we only send the requested channels to
722 * Voltage values are encoded as a value 0-255 (0-512 on the
723 * DSO-5200*), where the value is a point in the range
724 * represented by the vdiv setting. There are 8 vertical divs,
725 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
728 /* TODO: Support for DSO-5xxx series 9-bit samples. */
729 if (devc->ch1_enabled) {
730 range = ((float)vdivs[devc->voltage[0]][0] / vdivs[devc->voltage[0]][1]) * 8;
731 ch1 = range / 255 * *(buf + i * 2 + 1);
732 /* Value is centered around 0V. */
734 analog.data[data_offset++] = ch1;
736 if (devc->ch2_enabled) {
737 range = ((float)vdivs[devc->voltage[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
738 ch2 = range / 255 * *(buf + i * 2);
740 analog.data[data_offset++] = ch2;
743 sr_session_send(sdi, &packet);
748 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
749 * Only channel data comes in asynchronously, and all transfers for this are
750 * queued up beforehand, so this just needs to chuck the incoming data onto
751 * the libsigrok session bus.
753 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
755 struct sr_datafeed_packet packet;
756 struct sr_dev_inst *sdi;
757 struct dev_context *devc;
758 int num_samples, pre;
760 sdi = transfer->user_data;
762 sr_spew("receive_transfer(): status %s received %d bytes.",
763 libusb_error_name(transfer->status), transfer->actual_length);
765 if (transfer->actual_length == 0)
766 /* Nothing to send to the bus. */
769 num_samples = transfer->actual_length / 2;
771 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
772 devc->samp_received + num_samples, devc->framesize);
775 * The device always sends a full frame, but the beginning of the frame
776 * doesn't represent the trigger point. The offset at which the trigger
777 * happened came in with the capture state, so we need to start sending
778 * from there up the session bus. The samples in the frame buffer
779 * before that trigger point came after the end of the device's frame
780 * buffer was reached, and it wrapped around to overwrite up until the
783 if (devc->samp_received < devc->trigger_offset) {
784 /* Trigger point not yet reached. */
785 if (devc->samp_received + num_samples < devc->trigger_offset) {
786 /* The entire chunk is before the trigger point. */
787 memcpy(devc->framebuf + devc->samp_buffered * 2,
788 transfer->buffer, num_samples * 2);
789 devc->samp_buffered += num_samples;
792 * This chunk hits or overruns the trigger point.
793 * Store the part before the trigger fired, and
794 * send the rest up to the session bus.
796 pre = devc->trigger_offset - devc->samp_received;
797 memcpy(devc->framebuf + devc->samp_buffered * 2,
798 transfer->buffer, pre * 2);
799 devc->samp_buffered += pre;
801 /* The rest of this chunk starts with the trigger point. */
802 sr_dbg("Reached trigger point, %d samples buffered.",
803 devc->samp_buffered);
805 /* Avoid the corner case where the chunk ended at
806 * exactly the trigger point. */
807 if (num_samples > pre)
808 send_chunk(sdi, transfer->buffer + pre * 2,
812 /* Already past the trigger point, just send it all out. */
813 send_chunk(sdi, transfer->buffer, num_samples);
816 devc->samp_received += num_samples;
818 /* Everything in this transfer was either copied to the buffer or
819 * sent to the session bus. */
820 g_free(transfer->buffer);
821 libusb_free_transfer(transfer);
823 if (devc->samp_received >= devc->framesize) {
824 /* That was the last chunk in this frame. Send the buffered
825 * pre-trigger samples out now, in one big chunk. */
826 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
827 devc->samp_buffered);
828 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
830 /* Mark the end of this frame. */
831 packet.type = SR_DF_FRAME_END;
832 sr_session_send(sdi, &packet);
834 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
835 /* Terminate session */
836 devc->dev_state = STOPPING;
838 devc->dev_state = NEW_CAPTURE;
843 static int handle_event(int fd, int revents, void *cb_data)
845 const struct sr_dev_inst *sdi;
846 struct sr_datafeed_packet packet;
848 struct sr_dev_driver *di;
849 struct dev_context *devc;
850 struct drv_context *drvc;
852 uint32_t trigger_offset;
853 uint8_t capturestate;
862 if (devc->dev_state == STOPPING) {
863 /* We've been told to wind up the acquisition. */
864 sr_dbg("Stopping acquisition.");
866 * TODO: Doesn't really cancel pending transfers so they might
867 * come in after SR_DF_END is sent.
869 usb_source_remove(sdi->session, drvc->sr_ctx);
871 std_session_send_df_end(sdi, LOG_PREFIX);
873 devc->dev_state = IDLE;
878 /* Always handle pending libusb events. */
879 tv.tv_sec = tv.tv_usec = 0;
880 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
883 if (devc->dev_state == NEW_CAPTURE) {
884 if (dso_capture_start(sdi) != SR_OK)
886 if (dso_enable_trigger(sdi) != SR_OK)
888 // if (dso_force_trigger(sdi) != SR_OK)
890 sr_dbg("Successfully requested next chunk.");
891 devc->dev_state = CAPTURE;
894 if (devc->dev_state != CAPTURE)
897 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
900 sr_dbg("Capturestate %d.", capturestate);
901 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
902 switch (capturestate) {
904 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
905 devc->capture_empty_count = 0;
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.");
915 case CAPTURE_FILLING:
918 case CAPTURE_READY_8BIT:
919 /* Remember where in the captured frame the trigger is. */
920 devc->trigger_offset = trigger_offset;
922 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
923 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
924 devc->samp_buffered = devc->samp_received = 0;
926 /* Tell the scope to send us the first frame. */
927 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
931 * Don't hit the state machine again until we're done fetching
932 * the data we just told the scope to send.
934 devc->dev_state = FETCH_DATA;
936 /* Tell the frontend a new frame is on the way. */
937 packet.type = SR_DF_FRAME_BEGIN;
938 sr_session_send(sdi, &packet);
940 case CAPTURE_READY_9BIT:
942 sr_err("Not yet supported.");
944 case CAPTURE_TIMEOUT:
945 /* Doesn't matter, we'll try again next time. */
948 sr_dbg("Unknown capture state: %d.", capturestate);
955 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
957 struct dev_context *devc;
958 struct sr_dev_driver *di = sdi->driver;
959 struct drv_context *drvc = di->context;
961 if (sdi->status != SR_ST_ACTIVE)
962 return SR_ERR_DEV_CLOSED;
966 if (configure_channels(sdi) != SR_OK) {
967 sr_err("Failed to configure channels.");
971 if (dso_init(sdi) != SR_OK)
974 if (dso_capture_start(sdi) != SR_OK)
977 devc->dev_state = CAPTURE;
978 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
980 std_session_send_df_header(sdi, LOG_PREFIX);
985 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
987 struct dev_context *devc;
989 if (sdi->status != SR_ST_ACTIVE)
993 devc->dev_state = STOPPING;
998 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
999 .name = "hantek-dso",
1000 .longname = "Hantek DSO",
1003 .cleanup = std_cleanup,
1005 .dev_list = std_dev_list,
1006 .dev_clear = dev_clear,
1007 .config_get = config_get,
1008 .config_set = config_set,
1009 .config_list = config_list,
1010 .dev_open = dev_open,
1011 .dev_close = dev_close,
1012 .dev_acquisition_start = dev_acquisition_start,
1013 .dev_acquisition_stop = dev_acquisition_stop,