2 * This file is part of the sigrok 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"
38 /* Max time in ms before we want to check on USB events */
39 /* TODO tune this properly */
42 static const int hwcaps[] = {
43 SR_HWCAP_OSCILLOSCOPE,
44 SR_HWCAP_LIMIT_SAMPLES,
48 SR_HWCAP_TRIGGER_SOURCE,
49 SR_HWCAP_TRIGGER_SLOPE,
50 SR_HWCAP_HORIZ_TRIGGERPOS,
57 static const char *probe_names[] = {
63 static const struct dso_profile dev_profiles[] = {
64 { 0x04b4, 0x2090, 0x04b5, 0x2090,
66 FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
67 { 0x04b4, 0x2150, 0x04b5, 0x2150,
69 FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
70 { 0x04b4, 0x2250, 0x04b5, 0x2250,
72 FIRMWARE_DIR "/hantek-dso-2xxx.fw" },
73 { 0x04b4, 0x5200, 0x04b5, 0x5200,
75 FIRMWARE_DIR "/hantek-dso-5xxx.fw" },
76 { 0x04b4, 0x520a, 0x04b5, 0x520a,
77 "Hantek", "DSO-5200A",
78 FIRMWARE_DIR "/hantek-dso-5xxx.fw" },
79 { 0, 0, 0, 0, 0, 0, 0 },
82 static const uint64_t buffersizes[] = {
89 static const struct sr_rational timebases[] = {
110 static const struct sr_rational vdivs[] = {
125 static const char *trigger_sources[] = {
133 static const char *filter_targets[] = {
136 /* TODO: "TRIGGER", */
140 static const char *coupling[] = {
147 SR_PRIV libusb_context *usb_context = NULL;
148 SR_PRIV struct sr_dev_driver hantek_dso_driver_info;
149 static struct sr_dev_driver *hdi = &hantek_dso_driver_info;
151 static struct sr_dev_inst *dso_dev_new(int index, const struct dso_profile *prof)
153 struct sr_dev_inst *sdi;
154 struct sr_probe *probe;
158 sdi = sr_dev_inst_new(index, SR_ST_INITIALIZING,
159 prof->vendor, prof->model, NULL);
164 /* Add only the real probes -- EXT isn't a source of data, only
165 * a trigger source internal to the device.
167 for (i = 0; probe_names[i]; i++) {
168 if (!(probe = sr_probe_new(i, SR_PROBE_ANALOG, TRUE,
171 sdi->probes = g_slist_append(sdi->probes, probe);
174 if (!(ctx = g_try_malloc0(sizeof(struct context)))) {
175 sr_err("hantek-dso: ctx malloc failed");
179 ctx->dev_state = IDLE;
180 ctx->timebase = DEFAULT_TIMEBASE;
181 ctx->ch1_enabled = TRUE;
182 ctx->ch2_enabled = TRUE;
183 ctx->voltage_ch1 = DEFAULT_VOLTAGE;
184 ctx->voltage_ch2 = DEFAULT_VOLTAGE;
185 ctx->coupling_ch1 = DEFAULT_COUPLING;
186 ctx->coupling_ch2 = DEFAULT_COUPLING;
187 ctx->voffset_ch1 = DEFAULT_VERT_OFFSET;
188 ctx->voffset_ch2 = DEFAULT_VERT_OFFSET;
189 ctx->voffset_trigger = DEFAULT_VERT_TRIGGERPOS;
190 ctx->framesize = DEFAULT_FRAMESIZE;
191 ctx->triggerslope = SLOPE_POSITIVE;
192 ctx->triggersource = g_strdup(DEFAULT_TRIGGER_SOURCE);
193 ctx->triggerposition = DEFAULT_HORIZ_TRIGGERPOS;
195 hdi->instances = g_slist_append(hdi->instances, sdi);
200 static int configure_probes(struct context *ctx, const GSList *probes)
202 const struct sr_probe *probe;
205 ctx->ch1_enabled = ctx->ch2_enabled = FALSE;
206 for (l = probes; l; l = l->next) {
207 probe = (struct sr_probe *)l->data;
208 if (probe->index == 0)
209 ctx->ch1_enabled = probe->enabled;
210 else if (probe->index == 1)
211 ctx->ch2_enabled = probe->enabled;
217 /* Properly close and free all devices. */
218 static void clear_instances(void)
220 struct sr_dev_inst *sdi;
224 for (l = hdi->instances; l; l = l->next) {
225 if (!(sdi = l->data)) {
226 /* Log error, but continue cleaning up the rest. */
227 sr_err("hantek-dso: %s: sdi was NULL, continuing", __func__);
230 if (!(ctx = sdi->priv)) {
231 /* Log error, but continue cleaning up the rest. */
232 sr_err("hantek-dso: %s: sdi->priv was NULL, continuing", __func__);
236 sr_usb_dev_inst_free(ctx->usb);
237 g_free(ctx->triggersource);
239 sr_dev_inst_free(sdi);
242 g_slist_free(hdi->instances);
243 hdi->instances = NULL;
247 static int hw_init(void)
250 if (libusb_init(&usb_context) != 0) {
251 sr_err("hantek-dso: Failed to initialize USB.");
258 static GSList *hw_scan(GSList *options)
260 struct sr_dev_inst *sdi;
261 const struct dso_profile *prof;
264 struct libusb_device_descriptor des;
265 libusb_device **devlist;
266 int devcnt, ret, i, j;
271 hdi->instances = NULL;
275 /* Find all Hantek DSO devices and upload firmware to all of them. */
276 libusb_get_device_list(usb_context, &devlist);
277 for (i = 0; devlist[i]; i++) {
278 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
279 sr_err("hantek-dso: failed to get device descriptor: %d", ret);
284 for (j = 0; dev_profiles[j].orig_vid; j++) {
285 if (des.idVendor == dev_profiles[j].orig_vid
286 && des.idProduct == dev_profiles[j].orig_pid) {
287 /* Device matches the pre-firmware profile. */
288 prof = &dev_profiles[j];
289 sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model);
290 sdi = dso_dev_new(devcnt, prof);
291 devices = g_slist_append(devices, sdi);
293 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
294 prof->firmware) == SR_OK)
295 /* Remember when the firmware on this device was updated */
296 ctx->fw_updated = g_get_monotonic_time();
298 sr_err("hantek-dso: firmware upload failed for "
299 "device %d", devcnt);
300 /* Dummy USB address of 0xff will get overwritten later. */
301 ctx->usb = sr_usb_dev_inst_new(
302 libusb_get_bus_number(devlist[i]), 0xff, NULL);
305 } else if (des.idVendor == dev_profiles[j].fw_vid
306 && des.idProduct == dev_profiles[j].fw_pid) {
307 /* Device matches the post-firmware profile. */
308 prof = &dev_profiles[j];
309 sr_dbg("hantek-dso: Found a %s %s.", prof->vendor, prof->model);
310 sdi = dso_dev_new(devcnt, prof);
311 sdi->status = SR_ST_INACTIVE;
312 devices = g_slist_append(devices, sdi);
314 ctx->usb = sr_usb_dev_inst_new(
315 libusb_get_bus_number(devlist[i]),
316 libusb_get_device_address(devlist[i]), NULL);
322 /* not a supported VID/PID */
325 libusb_free_device_list(devlist, 1);
330 static int hw_dev_open(struct sr_dev_inst *sdi)
333 int64_t timediff_us, timediff_ms;
339 * if the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
340 * for the FX2 to renumerate
343 if (ctx->fw_updated > 0) {
344 sr_info("hantek-dso: waiting for device to reset");
345 /* takes at least 300ms for the FX2 to be gone from the USB bus */
346 g_usleep(300 * 1000);
348 while (timediff_ms < MAX_RENUM_DELAY_MS) {
349 if ((err = dso_open(sdi)) == SR_OK)
351 g_usleep(100 * 1000);
352 timediff_us = g_get_monotonic_time() - ctx->fw_updated;
353 timediff_ms = timediff_us / 1000;
354 sr_spew("hantek-dso: waited %" PRIi64 " ms", timediff_ms);
356 sr_info("hantek-dso: device came back after %d ms", timediff_ms);
362 sr_err("hantek-dso: unable to open device");
366 err = libusb_claim_interface(ctx->usb->devhdl, USB_INTERFACE);
368 sr_err("hantek-dso: Unable to claim interface: %d", err);
375 static int hw_dev_close(struct sr_dev_inst *sdi)
383 static int hw_cleanup(void)
389 libusb_exit(usb_context);
395 static int hw_info_get(int info_id, const void **data,
396 const struct sr_dev_inst *sdi)
407 case SR_DI_NUM_PROBES:
408 *data = GINT_TO_POINTER(NUM_PROBES);
410 case SR_DI_PROBE_NAMES:
413 case SR_DI_BUFFERSIZES:
416 case SR_DI_TIMEBASES:
419 case SR_DI_TRIGGER_SOURCES:
420 *data = trigger_sources;
423 *data = filter_targets;
431 /* TODO remove this */
432 case SR_DI_CUR_SAMPLERATE:
442 static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
446 struct sr_rational tmp_rat;
452 if (sdi->status != SR_ST_ACTIVE)
458 case SR_HWCAP_LIMIT_FRAMES:
459 ctx->limit_frames = *(const uint64_t *)value;
461 case SR_HWCAP_PROBECONFIG:
462 ret = configure_probes(ctx, (const GSList *)value);
464 case SR_HWCAP_TRIGGER_SLOPE:
465 tmp_u64 = *(const int *)value;
466 if (tmp_u64 != SLOPE_NEGATIVE && tmp_u64 != SLOPE_POSITIVE)
468 ctx->triggerslope = tmp_u64;
470 case SR_HWCAP_HORIZ_TRIGGERPOS:
471 tmp_float = *(const float *)value;
472 if (tmp_float < 0.0 || tmp_float > 1.0) {
473 sr_err("hantek-dso: trigger position should be between 0.0 and 1.0");
476 ctx->triggerposition = tmp_float;
478 case SR_HWCAP_BUFFERSIZE:
479 tmp_u64 = *(const int *)value;
480 for (i = 0; buffersizes[i]; i++) {
481 if (buffersizes[i] == tmp_u64) {
482 ctx->framesize = tmp_u64;
486 if (buffersizes[i] == 0)
489 case SR_HWCAP_TIMEBASE:
490 tmp_rat = *(const struct sr_rational *)value;
491 for (i = 0; timebases[i].p && timebases[i].q; i++) {
492 if (timebases[i].p == tmp_rat.p
493 && timebases[i].q == tmp_rat.q) {
498 if (timebases[i].p == 0 && timebases[i].q == 0)
501 case SR_HWCAP_TRIGGER_SOURCE:
502 for (i = 0; trigger_sources[i]; i++) {
503 if (!strcmp(value, trigger_sources[i])) {
504 ctx->triggersource = g_strdup(value);
508 if (trigger_sources[i] == 0)
511 case SR_HWCAP_FILTER:
512 ctx->filter_ch1 = ctx->filter_ch2 = ctx->filter_trigger = 0;
513 targets = g_strsplit(value, ",", 0);
514 for (i = 0; targets[i]; i++) {
515 if (targets[i] == '\0')
516 /* Empty filter string can be used to clear them all. */
518 else if (!strcmp(targets[i], "CH1"))
519 ctx->filter_ch1 = TRUE;
520 else if (!strcmp(targets[i], "CH2"))
521 ctx->filter_ch2 = TRUE;
522 else if (!strcmp(targets[i], "TRIGGER"))
523 ctx->filter_trigger = TRUE;
525 sr_err("invalid filter target %s", targets[i]);
532 /* TODO not supporting vdiv per channel yet */
533 tmp_rat = *(const struct sr_rational *)value;
534 for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
535 if (vdivs[i].p == tmp_rat.p
536 && vdivs[i].q == tmp_rat.q) {
537 ctx->voltage_ch1 = i;
538 ctx->voltage_ch2 = i;
542 if (vdivs[i].p == 0 && vdivs[i].q == 0)
545 case SR_HWCAP_COUPLING:
546 /* TODO not supporting coupling per channel yet */
547 for (i = 0; coupling[i]; i++) {
548 if (!strcmp(value, coupling[i])) {
549 ctx->coupling_ch1 = i;
550 ctx->coupling_ch2 = i;
554 if (coupling[i] == 0)
564 static void send_chunk(struct context *ctx, unsigned char *buf,
567 struct sr_datafeed_packet packet;
568 struct sr_datafeed_analog analog;
569 float ch1, ch2, range;
570 int num_probes, data_offset, i;
572 num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1;
573 packet.type = SR_DF_ANALOG;
574 packet.payload = &analog;
575 /* TODO: support for 5xxx series 9-bit samples */
576 analog.num_samples = num_samples;
577 analog.mq = SR_MQ_VOLTAGE;
578 analog.unit = SR_UNIT_VOLT;
579 analog.data = g_try_malloc(analog.num_samples * sizeof(float) * num_probes);
581 for (i = 0; i < analog.num_samples; i++) {
582 /* The device always sends data for both channels. If a channel
583 * is disabled, it contains a copy of the enabled channel's
584 * data. However, we only send the requested channels to the bus.
586 * Voltage values are encoded as a value 0-255 (0-512 on the 5200*),
587 * where the value is a point in the range represented by the vdiv
588 * setting. There are 8 vertical divs, so e.g. 500mV/div represents
589 * 4V peak-to-peak where 0 = -2V and 255 = +2V.
591 /* TODO: support for 5xxx series 9-bit samples */
592 if (ctx->ch1_enabled) {
593 range = ((float)vdivs[ctx->voltage_ch1].p / vdivs[ctx->voltage_ch1].q) * 8;
594 ch1 = range / 255 * *(buf + i * 2 + 1);
595 /* Value is centered around 0V. */
597 analog.data[data_offset++] = ch1;
599 if (ctx->ch2_enabled) {
600 range = ((float)vdivs[ctx->voltage_ch2].p / vdivs[ctx->voltage_ch2].q) * 8;
601 ch2 = range / 255 * *(buf + i * 2);
603 analog.data[data_offset++] = ch2;
606 sr_session_send(ctx->cb_data, &packet);
610 /* Called by libusb (as triggered by handle_event()) when a transfer comes in.
611 * Only channel data comes in asynchronously, and all transfers for this are
612 * queued up beforehand, so this just needs so chuck the incoming data onto
613 * the libsigrok session bus.
615 static void receive_transfer(struct libusb_transfer *transfer)
617 struct sr_datafeed_packet packet;
619 int num_samples, pre;
621 ctx = transfer->user_data;
622 sr_dbg("hantek-dso: receive_transfer(): status %d received %d bytes",
623 transfer->status, transfer->actual_length);
625 if (transfer->actual_length == 0)
626 /* Nothing to send to the bus. */
629 num_samples = transfer->actual_length / 2;
631 sr_dbg("hantek-dso: got %d-%d/%d samples in frame", ctx->samp_received + 1,
632 ctx->samp_received + num_samples, ctx->framesize);
634 /* The device always sends a full frame, but the beginning of the frame
635 * doesn't represent the trigger point. The offset at which the trigger
636 * happened came in with the capture state, so we need to start sending
637 * from there up the session bus. The samples in the frame buffer before
638 * that trigger point came after the end of the device's frame buffer was
639 * reached, and it wrapped around to overwrite up until the trigger point.
641 if (ctx->samp_received < ctx->trigger_offset) {
642 /* Trigger point not yet reached. */
643 if (ctx->samp_received + num_samples < ctx->trigger_offset) {
644 /* The entire chunk is before the trigger point. */
645 memcpy(ctx->framebuf + ctx->samp_buffered * 2,
646 transfer->buffer, num_samples * 2);
647 ctx->samp_buffered += num_samples;
649 /* This chunk hits or overruns the trigger point.
650 * Store the part before the trigger fired, and
651 * send the rest up to the session bus. */
652 pre = ctx->trigger_offset - ctx->samp_received;
653 memcpy(ctx->framebuf + ctx->samp_buffered * 2,
654 transfer->buffer, pre * 2);
655 ctx->samp_buffered += pre;
657 /* The rest of this chunk starts with the trigger point. */
658 sr_dbg("hantek-dso: reached trigger point, %d samples buffered",
661 /* Avoid the corner case where the chunk ended at
662 * exactly the trigger point. */
663 if (num_samples > pre)
664 send_chunk(ctx, transfer->buffer + pre * 2,
668 /* Already past the trigger point, just send it all out. */
669 send_chunk(ctx, transfer->buffer,
673 ctx->samp_received += num_samples;
675 /* Everything in this transfer was either copied to the buffer or
676 * sent to the session bus. */
677 g_free(transfer->buffer);
678 libusb_free_transfer(transfer);
680 if (ctx->samp_received >= ctx->framesize) {
681 /* That was the last chunk in this frame. Send the buffered
682 * pre-trigger samples out now, in one big chunk. */
683 sr_dbg("hantek-dso: end of frame, sending %d pre-trigger buffered samples",
685 send_chunk(ctx, ctx->framebuf, ctx->samp_buffered);
687 /* Mark the end of this frame. */
688 packet.type = SR_DF_FRAME_END;
689 sr_session_send(ctx->cb_data, &packet);
691 if (ctx->limit_frames && ++ctx->num_frames == ctx->limit_frames) {
692 /* Terminate session */
693 /* TODO: don't leave pending USB transfers hanging */
694 packet.type = SR_DF_END;
695 sr_session_send(ctx->cb_data, &packet);
697 ctx->dev_state = NEW_CAPTURE;
703 static int handle_event(int fd, int revents, void *cb_data)
705 struct sr_datafeed_packet packet;
709 uint32_t trigger_offset;
710 uint8_t capturestate;
712 /* Avoid compiler warnings. */
716 /* Always handle pending libusb events. */
717 tv.tv_sec = tv.tv_usec = 0;
718 libusb_handle_events_timeout(usb_context, &tv);
722 if (ctx->dev_state == NEW_CAPTURE) {
723 if (dso_capture_start(ctx) != SR_OK)
725 if (dso_enable_trigger(ctx) != SR_OK)
727 // if (dso_force_trigger(ctx) != SR_OK)
729 sr_dbg("hantek-dso: successfully requested next chunk");
730 ctx->dev_state = CAPTURE;
733 if (ctx->dev_state != CAPTURE)
736 if ((dso_get_capturestate(ctx, &capturestate, &trigger_offset)) != SR_OK)
739 sr_dbg("hantek-dso: capturestate %d", capturestate);
740 sr_dbg("hantek-dso: trigger offset 0x%.6x", trigger_offset);
741 switch (capturestate) {
743 if (++ctx->capture_empty_count >= MAX_CAPTURE_EMPTY) {
744 ctx->capture_empty_count = 0;
745 if (dso_capture_start(ctx) != SR_OK)
747 if (dso_enable_trigger(ctx) != SR_OK)
749 // if (dso_force_trigger(ctx) != SR_OK)
751 sr_dbg("hantek-dso: successfully requested next chunk");
754 case CAPTURE_FILLING:
757 case CAPTURE_READY_8BIT:
758 /* Remember where in the captured frame the trigger is. */
759 ctx->trigger_offset = trigger_offset;
761 num_probes = (ctx->ch1_enabled && ctx->ch2_enabled) ? 2 : 1;
762 ctx->framebuf = g_try_malloc(ctx->framesize * num_probes * 2);
763 ctx->samp_buffered = ctx->samp_received = 0;
765 /* Tell the scope to send us the first frame. */
766 if (dso_get_channeldata(ctx, receive_transfer) != SR_OK)
769 /* Don't hit the state machine again until we're done fetching
770 * the data we just told the scope to send.
772 ctx->dev_state = FETCH_DATA;
774 /* Tell the frontend a new frame is on the way. */
775 packet.type = SR_DF_FRAME_BEGIN;
776 sr_session_send(cb_data, &packet);
778 case CAPTURE_READY_9BIT:
780 sr_err("not yet supported");
782 case CAPTURE_TIMEOUT:
783 /* Doesn't matter, we'll try again next time. */
786 sr_dbg("unknown capture state");
792 static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
795 const struct libusb_pollfd **lupfd;
796 struct sr_datafeed_packet packet;
797 struct sr_datafeed_header header;
798 struct sr_datafeed_meta_analog meta;
802 if (sdi->status != SR_ST_ACTIVE)
806 ctx->cb_data = cb_data;
808 if (dso_init(ctx) != SR_OK)
811 if (dso_capture_start(ctx) != SR_OK)
814 ctx->dev_state = CAPTURE;
815 lupfd = libusb_get_pollfds(usb_context);
816 for (i = 0; lupfd[i]; i++)
817 sr_source_add(lupfd[i]->fd, lupfd[i]->events, TICK, handle_event,
821 /* Send header packet to the session bus. */
822 packet.type = SR_DF_HEADER;
823 packet.payload = (unsigned char *)&header;
824 header.feed_version = 1;
825 gettimeofday(&header.starttime, NULL);
826 sr_session_send(cb_data, &packet);
828 /* Send metadata about the SR_DF_ANALOG packets to come. */
829 packet.type = SR_DF_META_ANALOG;
830 packet.payload = &meta;
831 meta.num_probes = NUM_PROBES;
832 sr_session_send(cb_data, &packet);
837 /* TODO: doesn't really cancel pending transfers so they might come in after
840 static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
843 struct sr_datafeed_packet packet;
846 if (sdi->status != SR_ST_ACTIVE)
850 ctx->dev_state = IDLE;
852 packet.type = SR_DF_END;
853 sr_session_send(cb_data, &packet);
858 SR_PRIV struct sr_dev_driver hantek_dso_driver_info = {
859 .name = "hantek-dso",
860 .longname = "Hantek DSO",
863 .cleanup = hw_cleanup,
865 .dev_open = hw_dev_open,
866 .dev_close = hw_dev_close,
867 .info_get = hw_info_get,
868 .dev_config_set = hw_dev_config_set,
869 .dev_acquisition_start = hw_dev_acquisition_start,
870 .dev_acquisition_stop = hw_dev_acquisition_stop,