2 * This file is part of the libsigrok project.
4 * Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
5 * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
6 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "libsigrok.h"
28 #include "libsigrok-internal.h"
31 #define LOGIC16_VID 0x21a9
32 #define LOGIC16_PID 0x1001
34 #define USB_INTERFACE 0
35 #define USB_CONFIGURATION 1
36 #define FX2_FIRMWARE FIRMWARE_DIR "/saleae-logic16-fx2.fw"
38 #define MAX_RENUM_DELAY_MS 3000
39 #define NUM_SIMUL_TRANSFERS 32
41 SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
42 static struct sr_dev_driver *di = &saleae_logic16_driver_info;
44 static const uint32_t scanopts[] = {
48 static const uint32_t devopts[] = {
49 SR_CONF_LOGIC_ANALYZER,
51 SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
52 SR_CONF_CONN | SR_CONF_GET,
53 SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
54 SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
55 SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
58 static const int32_t soft_trigger_matches[] = {
66 static const char *channel_names[] = {
67 "0", "1", "2", "3", "4", "5", "6", "7", "8",
68 "9", "10", "11", "12", "13", "14", "15",
73 enum voltage_range range;
76 } volt_thresholds[] = {
77 { VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
78 { VOLTAGE_RANGE_5_V, 1.4, 3.6 },
81 static const uint64_t samplerates[] = {
98 static int init(struct sr_context *sr_ctx)
100 return std_init(sr_ctx, di, LOG_PREFIX);
103 static gboolean check_conf_profile(libusb_device *dev)
105 struct libusb_device_descriptor des;
106 struct libusb_device_handle *hdl;
108 unsigned char strdesc[64];
113 /* Assume the FW has not been loaded, unless proven wrong. */
114 if (libusb_get_device_descriptor(dev, &des) != 0)
117 if (libusb_open(dev, &hdl) != 0)
120 if (libusb_get_string_descriptor_ascii(hdl,
121 des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
123 if (strcmp((const char *)strdesc, "Saleae LLC"))
126 if (libusb_get_string_descriptor_ascii(hdl,
127 des.iProduct, strdesc, sizeof(strdesc)) < 0)
129 if (strcmp((const char *)strdesc, "Logic S/16"))
132 /* If we made it here, it must be a configured Logic16. */
141 static GSList *scan(GSList *options)
143 struct drv_context *drvc;
144 struct dev_context *devc;
145 struct sr_dev_inst *sdi;
146 struct sr_usb_dev_inst *usb;
147 struct sr_channel *ch;
148 struct sr_config *src;
149 GSList *l, *devices, *conn_devices;
150 struct libusb_device_descriptor des;
151 libusb_device **devlist;
154 char connection_id[64];
159 for (l = options; l; l = l->next) {
163 conn = g_variant_get_string(src->data, NULL);
168 conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
172 /* Find all Logic16 devices and upload firmware to them. */
174 libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
175 for (i = 0; devlist[i]; i++) {
178 for (l = conn_devices; l; l = l->next) {
180 if (usb->bus == libusb_get_bus_number(devlist[i])
181 && usb->address == libusb_get_device_address(devlist[i]))
185 /* This device matched none of the ones that
186 * matched the conn specification. */
190 if ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) {
191 sr_warn("Failed to get device descriptor: %s.",
192 libusb_error_name(ret));
196 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
198 if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID)
201 sdi = g_malloc0(sizeof(struct sr_dev_inst));
202 sdi->status = SR_ST_INITIALIZING;
203 sdi->vendor = g_strdup("Saleae");
204 sdi->model = g_strdup("Logic16");
206 sdi->connection_id = g_strdup(connection_id);
208 for (j = 0; channel_names[j]; j++) {
209 if (!(ch = sr_channel_new(j, SR_CHANNEL_LOGIC, TRUE,
212 sdi->channels = g_slist_append(sdi->channels, ch);
215 devc = g_malloc0(sizeof(struct dev_context));
216 devc->selected_voltage_range = VOLTAGE_RANGE_18_33_V;
218 drvc->instances = g_slist_append(drvc->instances, sdi);
219 devices = g_slist_append(devices, sdi);
221 if (check_conf_profile(devlist[i])) {
222 /* Already has the firmware, so fix the new address. */
223 sr_dbg("Found a Logic16 device.");
224 sdi->status = SR_ST_INACTIVE;
225 sdi->inst_type = SR_INST_USB;
226 sdi->conn = sr_usb_dev_inst_new(
227 libusb_get_bus_number(devlist[i]),
228 libusb_get_device_address(devlist[i]), NULL);
230 if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
231 FX2_FIRMWARE) == SR_OK)
232 /* Store when this device's FW was updated. */
233 devc->fw_updated = g_get_monotonic_time();
235 sr_err("Firmware upload failed.");
236 sdi->inst_type = SR_INST_USB;
237 sdi->conn = sr_usb_dev_inst_new(
238 libusb_get_bus_number(devlist[i]), 0xff, NULL);
241 libusb_free_device_list(devlist, 1);
242 g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
247 static GSList *dev_list(void)
249 return ((struct drv_context *)(di->priv))->instances;
252 static int logic16_dev_open(struct sr_dev_inst *sdi)
254 libusb_device **devlist;
255 struct sr_usb_dev_inst *usb;
256 struct libusb_device_descriptor des;
257 struct drv_context *drvc;
258 int ret, i, device_count;
259 char connection_id[64];
264 if (sdi->status == SR_ST_ACTIVE)
265 /* Device is already in use. */
268 device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
269 if (device_count < 0) {
270 sr_err("Failed to get device list: %s.",
271 libusb_error_name(device_count));
275 for (i = 0; i < device_count; i++) {
276 if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
277 sr_err("Failed to get device descriptor: %s.",
278 libusb_error_name(ret));
282 if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID)
285 if ((sdi->status == SR_ST_INITIALIZING) ||
286 (sdi->status == SR_ST_INACTIVE)) {
288 * Check device by its physical USB bus/port address.
290 usb_get_port_path(devlist[i], connection_id, sizeof(connection_id));
291 if (strcmp(sdi->connection_id, connection_id))
292 /* This is not the one. */
296 if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
297 if (usb->address == 0xff)
299 * First time we touch this device after FW
300 * upload, so we don't know the address yet.
302 usb->address = libusb_get_device_address(devlist[i]);
304 sr_err("Failed to open device: %s.",
305 libusb_error_name(ret));
309 ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
310 if (ret == LIBUSB_ERROR_BUSY) {
311 sr_err("Unable to claim USB interface. Another "
312 "program or driver has already claimed it.");
314 } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
315 sr_err("Device has been disconnected.");
317 } else if (ret != 0) {
318 sr_err("Unable to claim interface: %s.",
319 libusb_error_name(ret));
323 if ((ret = logic16_init_device(sdi)) != SR_OK) {
324 sr_err("Failed to init device.");
328 sdi->status = SR_ST_ACTIVE;
329 sr_info("Opened device on %d.%d (logical) / %s (physical), interface %d.",
330 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
334 libusb_free_device_list(devlist, 1);
336 if (sdi->status != SR_ST_ACTIVE) {
338 libusb_release_interface(usb->devhdl, USB_INTERFACE);
339 libusb_close(usb->devhdl);
348 static int dev_open(struct sr_dev_inst *sdi)
350 struct dev_context *devc;
352 int64_t timediff_us, timediff_ms;
357 * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
358 * milliseconds for the FX2 to renumerate.
361 if (devc->fw_updated > 0) {
362 sr_info("Waiting for device to reset.");
363 /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
364 g_usleep(300 * 1000);
366 while (timediff_ms < MAX_RENUM_DELAY_MS) {
367 if ((ret = logic16_dev_open(sdi)) == SR_OK)
369 g_usleep(100 * 1000);
371 timediff_us = g_get_monotonic_time() - devc->fw_updated;
372 timediff_ms = timediff_us / 1000;
373 sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
376 sr_err("Device failed to renumerate.");
379 sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
381 sr_info("Firmware upload was not needed.");
382 ret = logic16_dev_open(sdi);
386 sr_err("Unable to open device.");
390 if (devc->cur_samplerate == 0) {
391 /* Samplerate hasn't been set; default to the slowest one. */
392 devc->cur_samplerate = samplerates[0];
398 static int dev_close(struct sr_dev_inst *sdi)
400 struct sr_usb_dev_inst *usb;
403 if (usb->devhdl == NULL)
406 sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
407 usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
408 libusb_release_interface(usb->devhdl, USB_INTERFACE);
409 libusb_close(usb->devhdl);
411 sdi->status = SR_ST_INACTIVE;
416 static int cleanup(void)
419 struct drv_context *drvc;
421 if (!(drvc = di->priv))
422 /* Can get called on an unused driver, doesn't matter. */
425 ret = std_dev_clear(di, NULL);
432 static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
433 const struct sr_channel_group *cg)
435 struct dev_context *devc;
436 struct sr_usb_dev_inst *usb;
447 if (!sdi || !sdi->conn)
450 if (usb->address == 255)
451 /* Device still needs to re-enumerate after firmware
452 * upload, so we don't know its (future) address. */
454 snprintf(str, 128, "%d.%d", usb->bus, usb->address);
455 *data = g_variant_new_string(str);
457 case SR_CONF_SAMPLERATE:
461 *data = g_variant_new_uint64(devc->cur_samplerate);
463 case SR_CONF_VOLTAGE_THRESHOLD:
468 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
469 if (devc->selected_voltage_range !=
470 volt_thresholds[i].range)
472 range[0] = g_variant_new_double(volt_thresholds[i].low);
473 range[1] = g_variant_new_double(volt_thresholds[i].high);
474 *data = g_variant_new_tuple(range, 2);
486 static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
487 const struct sr_channel_group *cg)
489 struct dev_context *devc;
496 if (sdi->status != SR_ST_ACTIVE)
497 return SR_ERR_DEV_CLOSED;
503 case SR_CONF_SAMPLERATE:
504 devc->cur_samplerate = g_variant_get_uint64(data);
506 case SR_CONF_LIMIT_SAMPLES:
507 devc->limit_samples = g_variant_get_uint64(data);
509 case SR_CONF_VOLTAGE_THRESHOLD:
510 g_variant_get(data, "(dd)", &low, &high);
512 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
513 if (fabs(volt_thresholds[i].low - low) < 0.1 &&
514 fabs(volt_thresholds[i].high - high) < 0.1) {
515 devc->selected_voltage_range =
516 volt_thresholds[i].range;
529 static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
530 const struct sr_channel_group *cg)
532 GVariant *gvar, *range[2];
542 case SR_CONF_SCAN_OPTIONS:
543 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
544 scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
546 case SR_CONF_DEVICE_OPTIONS:
547 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
548 devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
550 case SR_CONF_SAMPLERATE:
551 g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
552 gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
553 samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
554 g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
555 *data = g_variant_builder_end(&gvb);
557 case SR_CONF_VOLTAGE_THRESHOLD:
558 g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
559 for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
560 range[0] = g_variant_new_double(volt_thresholds[i].low);
561 range[1] = g_variant_new_double(volt_thresholds[i].high);
562 gvar = g_variant_new_tuple(range, 2);
563 g_variant_builder_add_value(&gvb, gvar);
565 *data = g_variant_builder_end(&gvb);
567 case SR_CONF_TRIGGER_MATCH:
568 *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
569 soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
579 static void abort_acquisition(struct dev_context *devc)
583 devc->sent_samples = -1;
585 for (i = devc->num_transfers - 1; i >= 0; i--) {
586 if (devc->transfers[i])
587 libusb_cancel_transfer(devc->transfers[i]);
591 static unsigned int bytes_per_ms(struct dev_context *devc)
593 return devc->cur_samplerate * devc->num_channels / 8000;
596 static size_t get_buffer_size(struct dev_context *devc)
601 * The buffer should be large enough to hold 10ms of data and
604 s = 10 * bytes_per_ms(devc);
605 return (s + 511) & ~511;
608 static unsigned int get_number_of_transfers(struct dev_context *devc)
612 /* Total buffer size should be able to hold about 500ms of data. */
613 n = 500 * bytes_per_ms(devc) / get_buffer_size(devc);
615 if (n > NUM_SIMUL_TRANSFERS)
616 return NUM_SIMUL_TRANSFERS;
621 static unsigned int get_timeout(struct dev_context *devc)
624 unsigned int timeout;
626 total_size = get_buffer_size(devc) * get_number_of_transfers(devc);
627 timeout = total_size / bytes_per_ms(devc);
628 return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
631 static int configure_channels(const struct sr_dev_inst *sdi)
633 struct dev_context *devc;
634 struct sr_channel *ch;
636 uint16_t channel_bit;
640 devc->cur_channels = 0;
641 devc->num_channels = 0;
642 for (l = sdi->channels; l; l = l->next) {
643 ch = (struct sr_channel *)l->data;
644 if (ch->enabled == FALSE)
647 channel_bit = 1 << (ch->index);
649 devc->cur_channels |= channel_bit;
651 #ifdef WORDS_BIGENDIAN
653 * Output logic data should be stored in little endian format.
654 * To speed things up during conversion, do the switcharoo
657 channel_bit = 1 << (ch->index ^ 8);
660 devc->channel_masks[devc->num_channels++] = channel_bit;
666 static int receive_data(int fd, int revents, void *cb_data)
669 struct dev_context *devc;
670 struct drv_context *drvc;
671 const struct sr_dev_inst *sdi;
680 tv.tv_sec = tv.tv_usec = 0;
681 libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
683 if (devc->sent_samples == -2) {
684 logic16_abort_acquisition(sdi);
685 abort_acquisition(devc);
691 static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
693 struct dev_context *devc;
694 struct drv_context *drvc;
695 struct sr_usb_dev_inst *usb;
696 struct sr_trigger *trigger;
697 struct libusb_transfer *transfer;
698 unsigned int i, timeout, num_transfers;
701 size_t size, convsize;
703 if (sdi->status != SR_ST_ACTIVE)
704 return SR_ERR_DEV_CLOSED;
710 /* Configures devc->cur_channels. */
711 if (configure_channels(sdi) != SR_OK) {
712 sr_err("Failed to configure channels.");
716 devc->cb_data = cb_data;
717 devc->sent_samples = 0;
718 devc->empty_transfer_count = 0;
719 devc->cur_channel = 0;
720 memset(devc->channel_data, 0, sizeof(devc->channel_data));
722 if ((trigger = sr_session_trigger_get(sdi->session))) {
723 devc->stl = soft_trigger_logic_new(sdi, trigger);
724 devc->trigger_fired = FALSE;
726 devc->trigger_fired = TRUE;
728 timeout = get_timeout(devc);
729 num_transfers = get_number_of_transfers(devc);
730 size = get_buffer_size(devc);
731 convsize = (size / devc->num_channels + 2) * 16;
732 devc->submitted_transfers = 0;
734 devc->convbuffer_size = convsize;
735 if (!(devc->convbuffer = g_try_malloc(convsize))) {
736 sr_err("Conversion buffer malloc failed.");
737 return SR_ERR_MALLOC;
740 devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
741 if (!devc->transfers) {
742 sr_err("USB transfers malloc failed.");
743 g_free(devc->convbuffer);
744 return SR_ERR_MALLOC;
747 if ((ret = logic16_setup_acquisition(sdi, devc->cur_samplerate,
748 devc->cur_channels)) != SR_OK) {
749 g_free(devc->transfers);
750 g_free(devc->convbuffer);
754 devc->num_transfers = num_transfers;
755 for (i = 0; i < num_transfers; i++) {
756 if (!(buf = g_try_malloc(size))) {
757 sr_err("USB transfer buffer malloc failed.");
758 if (devc->submitted_transfers)
759 abort_acquisition(devc);
761 g_free(devc->transfers);
762 g_free(devc->convbuffer);
764 return SR_ERR_MALLOC;
766 transfer = libusb_alloc_transfer(0);
767 libusb_fill_bulk_transfer(transfer, usb->devhdl,
768 2 | LIBUSB_ENDPOINT_IN, buf, size,
769 logic16_receive_transfer, (void *)sdi, timeout);
770 if ((ret = libusb_submit_transfer(transfer)) != 0) {
771 sr_err("Failed to submit transfer: %s.",
772 libusb_error_name(ret));
773 libusb_free_transfer(transfer);
775 abort_acquisition(devc);
778 devc->transfers[i] = transfer;
779 devc->submitted_transfers++;
782 devc->ctx = drvc->sr_ctx;
784 usb_source_add(sdi->session, devc->ctx, timeout, receive_data, (void *)sdi);
786 /* Send header packet to the session bus. */
787 std_session_send_df_header(cb_data, LOG_PREFIX);
789 if ((ret = logic16_start_acquisition(sdi)) != SR_OK) {
790 abort_acquisition(devc);
797 static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
803 if (sdi->status != SR_ST_ACTIVE)
804 return SR_ERR_DEV_CLOSED;
806 ret = logic16_abort_acquisition(sdi);
808 abort_acquisition(sdi->priv);
813 SR_PRIV struct sr_dev_driver saleae_logic16_driver_info = {
814 .name = "saleae-logic16",
815 .longname = "Saleae Logic16",
820 .dev_list = dev_list,
822 .config_get = config_get,
823 .config_set = config_set,
824 .config_list = config_list,
825 .dev_open = dev_open,
826 .dev_close = dev_close,
827 .dev_acquisition_start = dev_acquisition_start,
828 .dev_acquisition_stop = dev_acquisition_stop,