2 * This file is part of the libsigrok project.
4 * Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de>
5 * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
6 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
7 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation, either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 * This driver implementation initially was derived from the
25 * src/hardware/saleae-logic16/ source code.
30 #include <libsigrok/libsigrok.h>
33 #include "libsigrok-internal.h"
36 static const uint32_t scanopts[] = {
40 static const uint32_t drvopts[] = {
41 SR_CONF_LOGIC_ANALYZER,
44 static const uint32_t devopts[] = {
45 /* TODO: SR_CONF_CONTINUOUS, */
46 SR_CONF_CONN | SR_CONF_GET,
47 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
48 SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
49 SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
50 SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
51 SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
52 SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
53 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
54 SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
57 static const int32_t trigger_matches[] = {
64 static const char *channel_names_logic[] = {
65 "CH0", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7",
66 "CH8", "CH9", "CH10", "CH11", "CH12", "CH13", "CH14", "CH15",
67 "CH16", "CH17", "CH18", "CH19", "CH20", "CH21", "CH22", "CH23",
68 "CH24", "CH25", "CH26", "CH27", "CH28", "CH29", "CH30", "CH31",
72 * The hardware uses a 100/200/500MHz base clock (model dependent) and
73 * a 16bit divider (common across all models). The range from 10kHz to
74 * 100/200/500MHz should be applicable to all devices. High rates may
75 * suffer from coarse resolution (e.g. in the "500MHz div 2" case) and
76 * may not provide the desired 1/2/5 steps. Fortunately this exclusively
77 * affects the 500MHz model where 250MHz is used instead of 200MHz and
78 * the 166MHz and 125MHz rates are not presented to users. Deep memory
79 * of these models and hardware compression reduce the necessity to let
80 * users pick from a huge list of possible rates.
84 static const uint64_t rates_500mhz[] = {
102 static const uint64_t rates_200mhz[] = {
119 static const uint64_t rates_100mhz[] = {
135 static const float logic_threshold_value[] = {
147 static const char *logic_threshold[] = {
160 #define LOGIC_THRESHOLD_IDX_USER (ARRAY_SIZE(logic_threshold) - 1)
162 /* Convenience. Release an allocated devc from error paths. */
163 static void kingst_la2016_free_devc(struct dev_context *devc)
167 g_free(devc->mcu_firmware);
168 g_free(devc->fpga_bitstream);
172 /* Convenience. Release an allocated sdi from error paths. */
173 static void kingst_la2016_free_sdi(struct sr_dev_inst *sdi)
179 g_free(sdi->version);
180 g_free(sdi->serial_num);
181 g_free(sdi->connection_id);
182 sr_usb_dev_inst_free(sdi->conn);
183 kingst_la2016_free_devc(sdi->priv);
186 /* Convenience. Open a USB device (including claiming an interface). */
187 static int la2016_open_usb(struct sr_usb_dev_inst *usb,
188 libusb_device *dev, gboolean show_message)
192 ret = libusb_open(dev, &usb->devhdl);
195 sr_err("Cannot open device: %s.",
196 libusb_error_name(ret));
201 if (usb->address == 0xff) {
203 * First encounter after firmware upload.
204 * Grab current address after enumeration.
206 usb->address = libusb_get_device_address(dev);
209 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
210 if (ret == LIBUSB_ERROR_BUSY) {
211 sr_err("Cannot claim USB interface. Another program or driver using it?");
213 } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
214 sr_err("Device has been disconnected.");
216 } else if (ret != 0) {
217 sr_err("Cannot claim USB interface: %s.",
218 libusb_error_name(ret));
225 /* Convenience. Close an opened USB device (and release the interface). */
226 static void la2016_close_usb(struct sr_usb_dev_inst *usb)
233 libusb_release_interface(usb->devhdl, USB_INTERFACE);
234 libusb_close(usb->devhdl);
239 /* Communicate to an USB device to identify the Kingst LA model. */
240 static int la2016_identify_read(struct sr_dev_inst *sdi,
241 struct sr_usb_dev_inst *usb, libusb_device *dev,
242 gboolean show_message)
246 ret = la2016_open_usb(usb, dev, show_message);
249 sr_err("Cannot communicate to MCU firmware.");
254 * Also complete the hardware configuration (FPGA bitstream)
255 * when MCU firmware communication became operational. Either
256 * failure is considered fatal when probing for the device.
258 ret = la2016_identify_device(sdi, show_message);
260 ret = la2016_init_hardware(sdi);
263 la2016_close_usb(usb);
268 /* Find given conn_id in another USB enum. Identify Kingst LA model. */
269 static int la2016_identify_enum(struct sr_dev_inst *sdi)
271 struct sr_dev_driver *di;
272 struct drv_context *drvc;
273 struct sr_context *ctx;
274 libusb_device **devlist, *dev;
275 struct libusb_device_descriptor des;
277 size_t device_count, dev_idx;
284 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
291 for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
292 dev = devlist[dev_idx];
293 libusb_get_device_descriptor(dev, &des);
294 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
296 if (des.iProduct != LA2016_IPRODUCT_INDEX)
298 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
301 if (strcmp(sdi->connection_id, conn_id) != 0)
303 id_ret = la2016_identify_read(sdi, sdi->conn, dev, FALSE);
306 libusb_free_device_list(devlist, 1);
311 /* Wait for a device to re-appear after firmware upload. */
312 static int la2016_identify_wait(struct sr_dev_inst *sdi)
314 struct dev_context *devc;
315 uint64_t reset_done, now, elapsed_ms;
320 sr_info("Waiting for device to reset after firmware upload.");
321 now = g_get_monotonic_time();
322 reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
323 if (now < reset_done)
324 g_usleep(reset_done - now);
326 now = g_get_monotonic_time();
327 elapsed_ms = (now - devc->fw_uploaded) / 1000;
328 sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
329 ret = la2016_identify_enum(sdi);
331 devc->fw_uploaded = 0;
334 g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
335 } while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
337 sr_err("Device failed to re-enumerate.");
340 sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
346 * Open given conn_id from another USB enum. Used by dev_open(). Similar
347 * to, and should be kept in sync with la2016_identify_enum().
349 static int la2016_open_enum(struct sr_dev_inst *sdi)
351 struct sr_dev_driver *di;
352 struct drv_context *drvc;
353 struct sr_context *ctx;
354 libusb_device **devlist, *dev;
355 struct libusb_device_descriptor des;
357 size_t device_count, dev_idx;
364 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
370 open_ret = SR_ERR_IO;
371 for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
372 dev = devlist[dev_idx];
373 libusb_get_device_descriptor(dev, &des);
374 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
376 if (des.iProduct != LA2016_IPRODUCT_INDEX)
378 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
381 if (strcmp(sdi->connection_id, conn_id) != 0)
383 open_ret = la2016_open_usb(sdi->conn, dev, TRUE);
386 libusb_free_device_list(devlist, 1);
391 static GSList *scan(struct sr_dev_driver *di, GSList *options)
393 struct drv_context *drvc;
394 struct sr_context *ctx;
395 struct dev_context *devc;
396 struct sr_dev_inst *sdi;
397 struct sr_usb_dev_inst *usb;
398 struct sr_config *src;
400 GSList *devices, *found_devices, *renum_devices;
401 GSList *conn_devices;
402 struct libusb_device_descriptor des;
403 libusb_device **devlist, *dev;
404 size_t dev_count, dev_idx, ch_idx;
410 size_t ch_off, ch_max;
417 for (l = options; l; l = l->next) {
421 conn = g_variant_get_string(src->data, NULL);
426 conn_devices = sr_usb_find(ctx->libusb_ctx, conn);
427 if (conn && !conn_devices) {
428 sr_err("Cannot find the specified connection '%s'.", conn);
433 * Find all LA2016 devices, optionally upload firmware to them.
434 * Defer completion of sdi/devc creation until all (selected)
435 * devices were found in a usable state, and their models got
436 * identified which affect their feature set. It appears that
437 * we cannot communicate to the device within the same USB enum
438 * cycle, needs another USB enumeration after firmware upload.
441 found_devices = NULL;
442 renum_devices = NULL;
443 ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
445 sr_err("Cannot get device list: %s.", libusb_error_name(ret));
449 for (dev_idx = 0; dev_idx < dev_count; dev_idx++) {
450 dev = devlist[dev_idx];
451 bus = libusb_get_bus_number(dev);
452 addr = libusb_get_device_address(dev);
454 /* Filter by connection when externally specified. */
455 for (l = conn_devices; l; l = l->next) {
457 if (usb->bus == bus && usb->address == addr)
460 if (conn_devices && !l) {
461 sr_spew("Bus %hhu, addr %hhu do not match specified filter.",
466 /* Check USB VID:PID. Get the connection string. */
467 libusb_get_device_descriptor(dev, &des);
468 if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
471 ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
474 sr_dbg("USB enum found %04x:%04x at path %s, %d.%d.",
475 des.idVendor, des.idProduct, conn_id, bus, addr);
476 usb = sr_usb_dev_inst_new(bus, addr, NULL);
478 sdi = g_malloc0(sizeof(*sdi));
480 sdi->status = SR_ST_INITIALIZING;
481 sdi->inst_type = SR_INST_USB;
482 sdi->connection_id = g_strdup(conn_id);
485 devc = g_malloc0(sizeof(*devc));
489 * Load MCU firmware if it is currently missing. Which
490 * makes the device disappear and renumerate in USB.
491 * We need to come back another time to communicate to
494 devc->fw_uploaded = 0;
495 if (des.iProduct != LA2016_IPRODUCT_INDEX) {
496 sr_info("Uploading MCU firmware to '%s'.", conn_id);
497 ret = la2016_upload_firmware(sdi, ctx, dev, pid);
499 sr_err("MCU firmware upload failed.");
500 kingst_la2016_free_sdi(sdi);
503 devc->fw_uploaded = g_get_monotonic_time();
505 renum_devices = g_slist_append(renum_devices, sdi);
510 * Communicate to the MCU firmware to access EEPROM data
511 * which lets us identify the device type. Then stop, to
512 * share remaining sdi/devc creation with those devices
513 * which had their MCU firmware uploaded above and which
514 * get revisited later.
516 ret = la2016_identify_read(sdi, usb, dev, TRUE);
517 if (ret != SR_OK || !devc->model) {
518 sr_err("Unknown or unsupported device type.");
519 kingst_la2016_free_sdi(sdi);
522 found_devices = g_slist_append(found_devices, sdi);
524 libusb_free_device_list(devlist, 1);
525 g_slist_free_full(conn_devices, sr_usb_dev_inst_free_cb);
528 * Wait for devices to re-appear after firmware upload. Append
529 * the yet unidentified device to the list of found devices, or
530 * release the previously allocated sdi/devc.
532 for (l = renum_devices; l; l = l->next) {
535 ret = la2016_identify_wait(sdi);
536 if (ret != SR_OK || !devc->model) {
537 sr_dbg("Skipping unusable '%s'.", sdi->connection_id);
538 kingst_la2016_free_sdi(sdi);
541 found_devices = g_slist_append(found_devices, sdi);
543 g_slist_free(renum_devices);
546 * All found devices got identified, their type is known here.
547 * Complete the sdi/devc creation. Assign default settings
548 * because the vendor firmware would not let us read back the
549 * previously written configuration.
551 for (l = found_devices; l; l = l->next) {
555 sdi->vendor = g_strdup("Kingst");
556 sdi->model = g_strdup(devc->model->name);
559 /* Create the logic channels. */
560 ch_max = ARRAY_SIZE(channel_names_logic);
561 if (ch_max > devc->model->channel_count)
562 ch_max = devc->model->channel_count;
563 for (ch_idx = 0; ch_idx < ch_max; ch_idx++) {
564 sr_channel_new(sdi, ch_off,
565 SR_CHANNEL_LOGIC, TRUE,
566 channel_names_logic[ch_idx]);
571 * Ideally we'd get the previous configuration from the
572 * hardware, but this device is write-only. So we have
573 * to assign a fixed set of initial configuration values.
575 sr_sw_limits_init(&devc->sw_limits);
576 devc->sw_limits.limit_samples = 0;
577 devc->capture_ratio = 50;
578 devc->cur_samplerate = devc->model->samplerate;
579 devc->threshold_voltage_idx = 0;
580 devc->threshold_voltage = logic_threshold_value[devc->threshold_voltage_idx];
581 if (ARRAY_SIZE(devc->pwm_setting) >= 1) {
582 devc->pwm_setting[0].enabled = FALSE;
583 devc->pwm_setting[0].freq = SR_KHZ(1);
584 devc->pwm_setting[0].duty = 50;
586 if (ARRAY_SIZE(devc->pwm_setting) >= 2) {
587 devc->pwm_setting[1].enabled = FALSE;
588 devc->pwm_setting[1].freq = SR_KHZ(100);
589 devc->pwm_setting[1].duty = 50;
592 sdi->status = SR_ST_INACTIVE;
593 devices = g_slist_append(devices, sdi);
595 g_slist_free(found_devices);
597 return std_scan_complete(di, devices);
600 static int dev_open(struct sr_dev_inst *sdi)
602 struct dev_context *devc;
608 ret = la2016_open_enum(sdi);
610 sr_err("Cannot open device.");
614 /* Send most recent PWM configuration to the device. */
615 for (ch = 0; ch < ARRAY_SIZE(devc->pwm_setting); ch++) {
616 ret = la2016_write_pwm_config(sdi, ch);
624 static int dev_close(struct sr_dev_inst *sdi)
626 struct sr_usb_dev_inst *usb;
633 la2016_deinit_hardware(sdi);
635 sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
636 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
637 la2016_close_usb(sdi->conn);
642 static int config_get(uint32_t key, GVariant **data,
643 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
645 struct dev_context *devc;
646 struct sr_usb_dev_inst *usb;
661 if (usb->address == 0xff) {
663 * Device still needs to re-enumerate after firmware
664 * upload, so we don't know its (future) address.
668 *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
670 case SR_CONF_SAMPLERATE:
671 *data = g_variant_new_uint64(devc->cur_samplerate);
673 case SR_CONF_LIMIT_SAMPLES:
674 case SR_CONF_LIMIT_MSEC:
675 return sr_sw_limits_config_get(&devc->sw_limits, key, data);
676 case SR_CONF_CAPTURE_RATIO:
677 *data = g_variant_new_uint64(devc->capture_ratio);
679 case SR_CONF_VOLTAGE_THRESHOLD:
680 rounded = (int)(devc->threshold_voltage / 0.1) * 0.1;
681 *data = std_gvar_tuple_double(rounded, rounded + 0.1);
683 case SR_CONF_LOGIC_THRESHOLD:
684 label = logic_threshold[devc->threshold_voltage_idx];
685 *data = g_variant_new_string(label);
687 case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
688 *data = g_variant_new_double(devc->threshold_voltage);
698 static int config_set(uint32_t key, GVariant *data,
699 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
701 struct dev_context *devc;
710 case SR_CONF_SAMPLERATE:
711 devc->cur_samplerate = g_variant_get_uint64(data);
713 case SR_CONF_LIMIT_SAMPLES:
714 case SR_CONF_LIMIT_MSEC:
715 return sr_sw_limits_config_set(&devc->sw_limits, key, data);
716 case SR_CONF_CAPTURE_RATIO:
717 devc->capture_ratio = g_variant_get_uint64(data);
719 case SR_CONF_VOLTAGE_THRESHOLD:
720 g_variant_get(data, "(dd)", &low, &high);
721 devc->threshold_voltage = (low + high) / 2.0;
722 devc->threshold_voltage_idx = LOGIC_THRESHOLD_IDX_USER;
724 case SR_CONF_LOGIC_THRESHOLD: {
725 idx = std_str_idx(data, ARRAY_AND_SIZE(logic_threshold));
728 if (idx != LOGIC_THRESHOLD_IDX_USER) {
729 devc->threshold_voltage = logic_threshold_value[idx];
731 devc->threshold_voltage_idx = idx;
734 case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
735 devc->threshold_voltage = g_variant_get_double(data);
744 static int config_list(uint32_t key, GVariant **data,
745 const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
747 struct dev_context *devc;
749 devc = sdi ? sdi->priv : NULL;
752 case SR_CONF_SCAN_OPTIONS:
753 case SR_CONF_DEVICE_OPTIONS:
754 return STD_CONFIG_LIST(key, data, sdi, cg,
755 scanopts, drvopts, devopts);
756 case SR_CONF_SAMPLERATE:
759 if (devc->model->samplerate == SR_MHZ(500))
760 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_500mhz));
761 else if (devc->model->samplerate == SR_MHZ(200))
762 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_200mhz));
764 *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_100mhz));
766 case SR_CONF_LIMIT_SAMPLES:
767 *data = std_gvar_tuple_u64(0, LA2016_NUM_SAMPLES_MAX);
769 case SR_CONF_VOLTAGE_THRESHOLD:
770 *data = std_gvar_min_max_step_thresholds(
771 LA2016_THR_VOLTAGE_MIN,
772 LA2016_THR_VOLTAGE_MAX, 0.1);
774 case SR_CONF_TRIGGER_MATCH:
775 *data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
777 case SR_CONF_LOGIC_THRESHOLD:
778 *data = g_variant_new_strv(ARRAY_AND_SIZE(logic_threshold));
787 static int dev_acquisition_start(const struct sr_dev_inst *sdi)
789 struct sr_dev_driver *di;
790 struct drv_context *drvc;
791 struct sr_context *ctx;
792 struct dev_context *devc;
800 if (!devc->feed_queue) {
801 devc->feed_queue = feed_queue_logic_alloc(sdi,
802 LA2016_CONVBUFFER_SIZE, sizeof(uint16_t));
803 if (!devc->feed_queue) {
804 sr_err("Cannot allocate buffer for session feed.");
805 return SR_ERR_MALLOC;
809 sr_sw_limits_acquisition_start(&devc->sw_limits);
811 ret = la2016_setup_acquisition(sdi);
813 feed_queue_logic_free(devc->feed_queue);
814 devc->feed_queue = NULL;
818 ret = la2016_start_acquisition(sdi);
820 la2016_abort_acquisition(sdi);
821 feed_queue_logic_free(devc->feed_queue);
822 devc->feed_queue = NULL;
826 devc->completion_seen = FALSE;
827 usb_source_add(sdi->session, ctx, 50,
828 la2016_receive_data, (void *)sdi);
830 std_session_send_df_header(sdi);
835 static int dev_acquisition_stop(struct sr_dev_inst *sdi)
839 ret = la2016_abort_acquisition(sdi);
844 static struct sr_dev_driver kingst_la2016_driver_info = {
845 .name = "kingst-la2016",
846 .longname = "Kingst LA2016",
849 .cleanup = std_cleanup,
851 .dev_list = std_dev_list,
852 .dev_clear = std_dev_clear,
853 .config_get = config_get,
854 .config_set = config_set,
855 .config_list = config_list,
856 .dev_open = dev_open,
857 .dev_close = dev_close,
858 .dev_acquisition_start = dev_acquisition_start,
859 .dev_acquisition_stop = dev_acquisition_stop,
862 SR_REGISTER_DEV_DRIVER(kingst_la2016_driver_info);