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;
433 const uint64_t *vdiv;
437 case SR_CONF_NUM_HDIV:
438 *data = g_variant_new_int32(NUM_TIMEBASE);
440 case SR_CONF_NUM_VDIV:
441 *data = g_variant_new_int32(NUM_VDIV);
455 if (usb->address == 255)
456 /* Device still needs to re-enumerate after firmware
457 * upload, so we don't know its (future) address. */
459 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
460 *data = g_variant_new_string(str);
462 case SR_CONF_TIMEBASE:
463 *data = g_variant_new("(tt)", timebases[devc->timebase][0],
464 timebases[devc->timebase][1]);
466 case SR_CONF_BUFFERSIZE:
467 *data = g_variant_new_uint64(devc->framesize);
469 case SR_CONF_TRIGGER_SOURCE:
470 *data = g_variant_new_string(devc->triggersource);
472 case SR_CONF_TRIGGER_SLOPE:
473 s = (devc->triggerslope == SLOPE_POSITIVE) ? "r" : "f";
474 *data = g_variant_new_string(s);
476 case SR_CONF_HORIZ_TRIGGERPOS:
477 *data = g_variant_new_double(devc->triggerposition);
483 if (sdi->channel_groups->data == cg)
485 else if (sdi->channel_groups->next->data == cg)
491 *data = g_variant_new_boolean(devc->filter[ch_idx]);
494 vdiv = vdivs[devc->voltage[ch_idx]];
495 *data = g_variant_new("(tt)", vdiv[0], vdiv[1]);
497 case SR_CONF_COUPLING:
498 *data = g_variant_new_string(coupling[devc->coupling[ch_idx]]);
506 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
507 const struct sr_channel_group *cg)
509 struct dev_context *devc;
511 uint64_t tmp_u64, p, q;
512 int tmp_int, ch_idx, ret;
516 if (sdi->status != SR_ST_ACTIVE)
517 return SR_ERR_DEV_CLOSED;
523 case SR_CONF_LIMIT_FRAMES:
524 devc->limit_frames = g_variant_get_uint64(data);
526 case SR_CONF_TRIGGER_SLOPE:
527 tmp_str = g_variant_get_string(data, NULL);
528 if (!tmp_str || !(tmp_str[0] == 'f' || tmp_str[0] == 'r'))
530 devc->triggerslope = (tmp_str[0] == 'r')
531 ? SLOPE_POSITIVE : SLOPE_NEGATIVE;
533 case SR_CONF_HORIZ_TRIGGERPOS:
534 tmp_double = g_variant_get_double(data);
535 if (tmp_double < 0.0 || tmp_double > 1.0) {
536 sr_err("Trigger position should be between 0.0 and 1.0.");
539 devc->triggerposition = tmp_double;
541 case SR_CONF_BUFFERSIZE:
542 tmp_u64 = g_variant_get_uint64(data);
543 for (i = 0; i < NUM_BUFFER_SIZES; i++) {
544 if (devc->profile->buffersizes[i] == tmp_u64) {
545 devc->framesize = tmp_u64;
549 if (i == NUM_BUFFER_SIZES)
552 case SR_CONF_TIMEBASE:
553 g_variant_get(data, "(tt)", &p, &q);
555 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
556 if (timebases[i][0] == p && timebases[i][1] == q) {
562 devc->timebase = tmp_int;
566 case SR_CONF_TRIGGER_SOURCE:
567 tmp_str = g_variant_get_string(data, NULL);
568 for (i = 0; trigger_sources[i]; i++) {
569 if (!strcmp(tmp_str, trigger_sources[i])) {
570 devc->triggersource = g_strdup(tmp_str);
574 if (trigger_sources[i] == 0)
582 if (sdi->channel_groups->data == cg)
584 else if (sdi->channel_groups->next->data == cg)
590 devc->filter[ch_idx] = g_variant_get_boolean(data);
593 g_variant_get(data, "(tt)", &p, &q);
595 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
596 if (vdivs[i][0] == p && vdivs[i][1] == q) {
602 devc->voltage[ch_idx] = tmp_int;
606 case SR_CONF_COUPLING:
607 tmp_str = g_variant_get_string(data, NULL);
608 for (i = 0; coupling[i]; i++) {
609 if (!strcmp(tmp_str, coupling[i])) {
610 devc->coupling[ch_idx] = i;
614 if (coupling[i] == 0)
626 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
627 const struct sr_channel_group *cg)
629 struct dev_context *devc;
630 GVariant *tuple, *rational[2];
634 if (key == SR_CONF_SCAN_OPTIONS) {
635 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
636 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
638 } else if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
639 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
640 drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
649 case SR_CONF_DEVICE_OPTIONS:
650 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
651 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
653 case SR_CONF_BUFFERSIZE:
657 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64,
658 devc->profile->buffersizes, NUM_BUFFER_SIZES, sizeof(uint64_t));
660 case SR_CONF_TIMEBASE:
661 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
662 for (i = 0; i < ARRAY_SIZE(timebases); i++) {
663 rational[0] = g_variant_new_uint64(timebases[i][0]);
664 rational[1] = g_variant_new_uint64(timebases[i][1]);
665 tuple = g_variant_new_tuple(rational, 2);
666 g_variant_builder_add_value(&gvb, tuple);
668 *data = g_variant_builder_end(&gvb);
670 case SR_CONF_TRIGGER_SOURCE:
671 *data = g_variant_new_strv(trigger_sources,
672 ARRAY_SIZE(trigger_sources));
674 case SR_CONF_TRIGGER_SLOPE:
675 *data = g_variant_new_strv(trigger_slopes,
676 ARRAY_SIZE(trigger_slopes));
683 case SR_CONF_DEVICE_OPTIONS:
684 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
685 devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
687 case SR_CONF_COUPLING:
688 *data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
691 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
692 for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
693 rational[0] = g_variant_new_uint64(vdivs[i][0]);
694 rational[1] = g_variant_new_uint64(vdivs[i][1]);
695 tuple = g_variant_new_tuple(rational, 2);
696 g_variant_builder_add_value(&gvb, tuple);
698 *data = g_variant_builder_end(&gvb);
708 static void send_chunk(struct sr_dev_inst *sdi, unsigned char *buf,
711 struct sr_datafeed_packet packet;
712 struct sr_datafeed_analog_old analog;
713 struct dev_context *devc;
714 float ch1, ch2, range;
715 int num_channels, data_offset, i;
718 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
719 packet.type = SR_DF_ANALOG_OLD;
720 packet.payload = &analog;
721 /* TODO: support for 5xxx series 9-bit samples */
722 analog.channels = devc->enabled_channels;
723 analog.num_samples = num_samples;
724 analog.mq = SR_MQ_VOLTAGE;
725 analog.unit = SR_UNIT_VOLT;
727 /* TODO: Check malloc return value. */
728 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_channels);
730 for (i = 0; i < analog.num_samples; i++) {
732 * The device always sends data for both channels. If a channel
733 * is disabled, it contains a copy of the enabled channel's
734 * data. However, we only send the requested channels to
737 * Voltage values are encoded as a value 0-255 (0-512 on the
738 * DSO-5200*), where the value is a point in the range
739 * represented by the vdiv setting. There are 8 vertical divs,
740 * so e.g. 500mV/div represents 4V peak-to-peak where 0 = -2V
743 /* TODO: Support for DSO-5xxx series 9-bit samples. */
744 if (devc->ch1_enabled) {
745 range = ((float)vdivs[devc->voltage[0]][0] / vdivs[devc->voltage[0]][1]) * 8;
746 ch1 = range / 255 * *(buf + i * 2 + 1);
747 /* Value is centered around 0V. */
749 analog.data[data_offset++] = ch1;
751 if (devc->ch2_enabled) {
752 range = ((float)vdivs[devc->voltage[1]][0] / vdivs[devc->voltage[1]][1]) * 8;
753 ch2 = range / 255 * *(buf + i * 2);
755 analog.data[data_offset++] = ch2;
758 sr_session_send(devc->cb_data, &packet);
763 * Called by libusb (as triggered by handle_event()) when a transfer comes in.
764 * Only channel data comes in asynchronously, and all transfers for this are
765 * queued up beforehand, so this just needs to chuck the incoming data onto
766 * the libsigrok session bus.
768 static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
770 struct sr_datafeed_packet packet;
771 struct sr_dev_inst *sdi;
772 struct dev_context *devc;
773 int num_samples, pre;
775 sdi = transfer->user_data;
777 sr_spew("receive_transfer(): status %d received %d bytes.",
778 transfer->status, transfer->actual_length);
780 if (transfer->actual_length == 0)
781 /* Nothing to send to the bus. */
784 num_samples = transfer->actual_length / 2;
786 sr_spew("Got %d-%d/%d samples in frame.", devc->samp_received + 1,
787 devc->samp_received + num_samples, devc->framesize);
790 * The device always sends a full frame, but the beginning of the frame
791 * doesn't represent the trigger point. The offset at which the trigger
792 * happened came in with the capture state, so we need to start sending
793 * from there up the session bus. The samples in the frame buffer
794 * before that trigger point came after the end of the device's frame
795 * buffer was reached, and it wrapped around to overwrite up until the
798 if (devc->samp_received < devc->trigger_offset) {
799 /* Trigger point not yet reached. */
800 if (devc->samp_received + num_samples < devc->trigger_offset) {
801 /* The entire chunk is before the trigger point. */
802 memcpy(devc->framebuf + devc->samp_buffered * 2,
803 transfer->buffer, num_samples * 2);
804 devc->samp_buffered += num_samples;
807 * This chunk hits or overruns the trigger point.
808 * Store the part before the trigger fired, and
809 * send the rest up to the session bus.
811 pre = devc->trigger_offset - devc->samp_received;
812 memcpy(devc->framebuf + devc->samp_buffered * 2,
813 transfer->buffer, pre * 2);
814 devc->samp_buffered += pre;
816 /* The rest of this chunk starts with the trigger point. */
817 sr_dbg("Reached trigger point, %d samples buffered.",
818 devc->samp_buffered);
820 /* Avoid the corner case where the chunk ended at
821 * exactly the trigger point. */
822 if (num_samples > pre)
823 send_chunk(sdi, transfer->buffer + pre * 2,
827 /* Already past the trigger point, just send it all out. */
828 send_chunk(sdi, transfer->buffer, num_samples);
831 devc->samp_received += num_samples;
833 /* Everything in this transfer was either copied to the buffer or
834 * sent to the session bus. */
835 g_free(transfer->buffer);
836 libusb_free_transfer(transfer);
838 if (devc->samp_received >= devc->framesize) {
839 /* That was the last chunk in this frame. Send the buffered
840 * pre-trigger samples out now, in one big chunk. */
841 sr_dbg("End of frame, sending %d pre-trigger buffered samples.",
842 devc->samp_buffered);
843 send_chunk(sdi, devc->framebuf, devc->samp_buffered);
845 /* Mark the end of this frame. */
846 packet.type = SR_DF_FRAME_END;
847 sr_session_send(devc->cb_data, &packet);
849 if (devc->limit_frames && ++devc->num_frames == devc->limit_frames) {
850 /* Terminate session */
851 devc->dev_state = STOPPING;
853 devc->dev_state = NEW_CAPTURE;
858 static int handle_event(int fd, int revents, void *cb_data)
860 const struct sr_dev_inst *sdi;
861 struct sr_datafeed_packet packet;
863 struct sr_dev_driver *di;
864 struct dev_context *devc;
865 struct drv_context *drvc;
867 uint32_t trigger_offset;
868 uint8_t capturestate;
877 if (devc->dev_state == STOPPING) {
878 /* We've been told to wind up the acquisition. */
879 sr_dbg("Stopping acquisition.");
881 * TODO: Doesn't really cancel pending transfers so they might
882 * come in after SR_DF_END is sent.
884 usb_source_remove(sdi->session, drvc->sr_ctx);
886 packet.type = SR_DF_END;
887 sr_session_send(sdi, &packet);
889 devc->dev_state = IDLE;
894 /* Always handle pending libusb events. */
895 tv.tv_sec = tv.tv_usec = 0;
896 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
899 if (devc->dev_state == NEW_CAPTURE) {
900 if (dso_capture_start(sdi) != SR_OK)
902 if (dso_enable_trigger(sdi) != SR_OK)
904 // if (dso_force_trigger(sdi) != SR_OK)
906 sr_dbg("Successfully requested next chunk.");
907 devc->dev_state = CAPTURE;
910 if (devc->dev_state != CAPTURE)
913 if ((dso_get_capturestate(sdi, &capturestate, &trigger_offset)) != SR_OK)
916 sr_dbg("Capturestate %d.", capturestate);
917 sr_dbg("Trigger offset 0x%.6x.", trigger_offset);
918 switch (capturestate) {
920 if (++devc->capture_empty_count >= MAX_CAPTURE_EMPTY) {
921 devc->capture_empty_count = 0;
922 if (dso_capture_start(sdi) != SR_OK)
924 if (dso_enable_trigger(sdi) != SR_OK)
926 // if (dso_force_trigger(sdi) != SR_OK)
928 sr_dbg("Successfully requested next chunk.");
931 case CAPTURE_FILLING:
934 case CAPTURE_READY_8BIT:
935 /* Remember where in the captured frame the trigger is. */
936 devc->trigger_offset = trigger_offset;
938 num_channels = (devc->ch1_enabled && devc->ch2_enabled) ? 2 : 1;
939 devc->framebuf = g_malloc(devc->framesize * num_channels * 2);
940 devc->samp_buffered = devc->samp_received = 0;
942 /* Tell the scope to send us the first frame. */
943 if (dso_get_channeldata(sdi, receive_transfer) != SR_OK)
947 * Don't hit the state machine again until we're done fetching
948 * the data we just told the scope to send.
950 devc->dev_state = FETCH_DATA;
952 /* Tell the frontend a new frame is on the way. */
953 packet.type = SR_DF_FRAME_BEGIN;
954 sr_session_send(sdi, &packet);
956 case CAPTURE_READY_9BIT:
958 sr_err("Not yet supported.");
960 case CAPTURE_TIMEOUT:
961 /* Doesn't matter, we'll try again next time. */
964 sr_dbg("Unknown capture state: %d.", capturestate);
971 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
973 struct dev_context *devc;
974 struct sr_dev_driver *di = sdi->driver;
975 struct drv_context *drvc = di->context;
977 if (sdi->status != SR_ST_ACTIVE)
978 return SR_ERR_DEV_CLOSED;
981 devc->cb_data = cb_data;
983 if (configure_channels(sdi) != SR_OK) {
984 sr_err("Failed to configure channels.");
988 if (dso_init(sdi) != SR_OK)
991 if (dso_capture_start(sdi) != SR_OK)
994 devc->dev_state = CAPTURE;
995 usb_source_add(sdi->session, drvc->sr_ctx, TICK, handle_event, (void *)sdi);
997 /* Send header packet to the session bus. */
998 std_session_send_df_header(cb_data, LOG_PREFIX);
1003 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
1005 struct dev_context *devc;
1009 if (sdi->status != SR_ST_ACTIVE)
1013 devc->dev_state = STOPPING;
1018 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
1019 .name = "hantek-dso",
1020 .longname = "Hantek DSO",
1025 .dev_list = dev_list,
1026 .dev_clear = dev_clear,
1027 .config_get = config_get,
1028 .config_set = config_set,
1029 .config_list = config_list,
1030 .dev_open = dev_open,
1031 .dev_close = dev_close,
1032 .dev_acquisition_start = dev_acquisition_start,
1033 .dev_acquisition_stop = dev_acquisition_stop,