* This file is part of the libsigrok project.
*
* Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
+ * Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
+ * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
+#include <glib.h>
+#include <libusb.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
#include "protocol.h"
+#define LOGIC16_VID 0x21a9
+#define LOGIC16_PID 0x1001
+
+#define USB_INTERFACE 0
+#define USB_CONFIGURATION 1
+#define FX2_FIRMWARE FIRMWARE_DIR "/saleae-logic16-fx2.fw"
+
+#define MAX_RENUM_DELAY_MS 3000
+#define NUM_SIMUL_TRANSFERS 32
+
SR_PRIV struct sr_dev_driver saleae_logic16_driver_info;
static struct sr_dev_driver *di = &saleae_logic16_driver_info;
+static const int32_t hwopts[] = {
+ SR_CONF_CONN,
+};
+
+static const int32_t hwcaps[] = {
+ SR_CONF_LOGIC_ANALYZER,
+ SR_CONF_SAMPLERATE,
+ SR_CONF_VOLTAGE_THRESHOLD,
+ SR_CONF_TRIGGER_MATCH,
+
+ /* These are really implemented in the driver, not the hardware. */
+ SR_CONF_LIMIT_SAMPLES,
+ SR_CONF_CONTINUOUS,
+};
+
+static const int32_t soft_trigger_matches[] = {
+ SR_TRIGGER_ZERO,
+ SR_TRIGGER_ONE,
+ SR_TRIGGER_RISING,
+ SR_TRIGGER_FALLING,
+ SR_TRIGGER_EDGE,
+};
+
+static const char *channel_names[] = {
+ "0", "1", "2", "3", "4", "5", "6", "7", "8",
+ "9", "10", "11", "12", "13", "14", "15",
+ NULL,
+};
+
+static const struct {
+ enum voltage_range range;
+ gdouble low;
+ gdouble high;
+} volt_thresholds[] = {
+ { VOLTAGE_RANGE_18_33_V, 0.7, 1.4 },
+ { VOLTAGE_RANGE_5_V, 1.4, 3.6 },
+};
+
+static const uint64_t samplerates[] = {
+ SR_KHZ(500),
+ SR_MHZ(1),
+ SR_MHZ(2),
+ SR_MHZ(4),
+ SR_MHZ(5),
+ SR_MHZ(8),
+ SR_MHZ(10),
+ SR_KHZ(12500),
+ SR_MHZ(16),
+ SR_MHZ(25),
+ SR_MHZ(32),
+ SR_MHZ(40),
+ SR_MHZ(80),
+ SR_MHZ(100),
+};
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
+static gboolean check_conf_profile(libusb_device *dev)
+{
+ struct libusb_device_descriptor des;
+ struct libusb_device_handle *hdl;
+ gboolean ret;
+ unsigned char strdesc[64];
+
+ hdl = NULL;
+ ret = FALSE;
+ while (!ret) {
+ /* Assume the FW has not been loaded, unless proven wrong. */
+ if (libusb_get_device_descriptor(dev, &des) != 0)
+ break;
+
+ if (libusb_open(dev, &hdl) != 0)
+ break;
+
+ if (libusb_get_string_descriptor_ascii(hdl,
+ des.iManufacturer, strdesc, sizeof(strdesc)) < 0)
+ break;
+ if (strcmp((const char *)strdesc, "Saleae LLC"))
+ break;
+
+ if (libusb_get_string_descriptor_ascii(hdl,
+ des.iProduct, strdesc, sizeof(strdesc)) < 0)
+ break;
+ if (strcmp((const char *)strdesc, "Logic S/16"))
+ break;
+
+ /* If we made it here, it must be a configured Logic16. */
+ ret = TRUE;
+ }
+ if (hdl)
+ libusb_close(hdl);
+
+ return ret;
+}
+
static GSList *scan(GSList *options)
{
struct drv_context *drvc;
- GSList *devices;
-
- (void)options;
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
+ struct sr_usb_dev_inst *usb;
+ struct sr_channel *ch;
+ struct sr_config *src;
+ GSList *l, *devices, *conn_devices;
+ struct libusb_device_descriptor des;
+ libusb_device **devlist;
+ int devcnt, ret, i, j;
+ const char *conn;
- devices = NULL;
drvc = di->priv;
- drvc->instances = NULL;
- /* TODO: scan for devices, either based on a SR_CONF_CONN option
- * or on a USB scan. */
+ conn = NULL;
+ for (l = options; l; l = l->next) {
+ src = l->data;
+ switch (src->key) {
+ case SR_CONF_CONN:
+ conn = g_variant_get_string(src->data, NULL);
+ break;
+ }
+ }
+ if (conn)
+ conn_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn);
+ else
+ conn_devices = NULL;
+
+ /* Find all Logic16 devices and upload firmware to them. */
+ devices = NULL;
+ libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+ for (i = 0; devlist[i]; i++) {
+ if (conn) {
+ usb = NULL;
+ for (l = conn_devices; l; l = l->next) {
+ usb = l->data;
+ if (usb->bus == libusb_get_bus_number(devlist[i])
+ && usb->address == libusb_get_device_address(devlist[i]))
+ break;
+ }
+ if (!l)
+ /* This device matched none of the ones that
+ * matched the conn specification. */
+ continue;
+ }
+
+ if ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) {
+ sr_warn("Failed to get device descriptor: %s.",
+ libusb_error_name(ret));
+ continue;
+ }
+
+ if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID)
+ continue;
+
+ devcnt = g_slist_length(drvc->instances);
+ sdi = sr_dev_inst_new(devcnt, SR_ST_INITIALIZING,
+ "Saleae", "Logic16", NULL);
+ if (!sdi)
+ return NULL;
+ sdi->driver = di;
+
+ for (j = 0; channel_names[j]; j++) {
+ if (!(ch = sr_channel_new(j, SR_CHANNEL_LOGIC, TRUE,
+ channel_names[j])))
+ return NULL;
+ sdi->channels = g_slist_append(sdi->channels, ch);
+ }
+
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
+ return NULL;
+ devc->selected_voltage_range = VOLTAGE_RANGE_18_33_V;
+ sdi->priv = devc;
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+
+ if (check_conf_profile(devlist[i])) {
+ /* Already has the firmware, so fix the new address. */
+ sr_dbg("Found a Logic16 device.");
+ sdi->status = SR_ST_INACTIVE;
+ sdi->inst_type = SR_INST_USB;
+ sdi->conn = sr_usb_dev_inst_new(
+ libusb_get_bus_number(devlist[i]),
+ libusb_get_device_address(devlist[i]), NULL);
+ } else {
+ if (ezusb_upload_firmware(devlist[i], USB_CONFIGURATION,
+ FX2_FIRMWARE) == SR_OK)
+ /* Store when this device's FW was updated. */
+ devc->fw_updated = g_get_monotonic_time();
+ else
+ sr_err("Firmware upload failed for "
+ "device %d.", devcnt);
+ sdi->inst_type = SR_INST_USB;
+ sdi->conn = sr_usb_dev_inst_new(
+ libusb_get_bus_number(devlist[i]), 0xff, NULL);
+ }
+ }
+ libusb_free_device_list(devlist, 1);
+ g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
return devices;
}
static GSList *dev_list(void)
{
+ return ((struct drv_context *)(di->priv))->instances;
+}
+
+static int logic16_dev_open(struct sr_dev_inst *sdi)
+{
+ libusb_device **devlist;
+ struct sr_usb_dev_inst *usb;
+ struct libusb_device_descriptor des;
struct drv_context *drvc;
+ int ret, skip, i, device_count;
drvc = di->priv;
+ usb = sdi->conn;
+
+ if (sdi->status == SR_ST_ACTIVE)
+ /* Device is already in use. */
+ return SR_ERR;
+
+ skip = 0;
+ device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+ if (device_count < 0) {
+ sr_err("Failed to get device list: %s.",
+ libusb_error_name(device_count));
+ return SR_ERR;
+ }
- return drvc->instances;
-}
+ for (i = 0; i < device_count; i++) {
+ if ((ret = libusb_get_device_descriptor(devlist[i], &des))) {
+ sr_err("Failed to get device descriptor: %s.",
+ libusb_error_name(ret));
+ continue;
+ }
+
+ if (des.idVendor != LOGIC16_VID || des.idProduct != LOGIC16_PID)
+ continue;
+
+ if (sdi->status == SR_ST_INITIALIZING) {
+ if (skip != sdi->index) {
+ /* Skip devices of this type that aren't the one we want. */
+ skip += 1;
+ continue;
+ }
+ } else if (sdi->status == SR_ST_INACTIVE) {
+ /*
+ * This device is fully enumerated, so we need to find
+ * this device by vendor, product, bus and address.
+ */
+ if (libusb_get_bus_number(devlist[i]) != usb->bus
+ || libusb_get_device_address(devlist[i]) != usb->address)
+ /* This is not the one. */
+ continue;
+ }
+
+ if (!(ret = libusb_open(devlist[i], &usb->devhdl))) {
+ if (usb->address == 0xff)
+ /*
+ * First time we touch this device after FW
+ * upload, so we don't know the address yet.
+ */
+ usb->address = libusb_get_device_address(devlist[i]);
+ } else {
+ sr_err("Failed to open device: %s.",
+ libusb_error_name(ret));
+ break;
+ }
+
+ ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
+ if (ret == LIBUSB_ERROR_BUSY) {
+ sr_err("Unable to claim USB interface. Another "
+ "program or driver has already claimed it.");
+ break;
+ } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
+ sr_err("Device has been disconnected.");
+ break;
+ } else if (ret != 0) {
+ sr_err("Unable to claim interface: %s.",
+ libusb_error_name(ret));
+ break;
+ }
+
+ if ((ret = logic16_init_device(sdi)) != SR_OK) {
+ sr_err("Failed to init device.");
+ break;
+ }
+
+ sdi->status = SR_ST_ACTIVE;
+ sr_info("Opened device %d on %d.%d, interface %d.",
+ sdi->index, usb->bus, usb->address, USB_INTERFACE);
+
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+
+ if (sdi->status != SR_ST_ACTIVE) {
+ if (usb->devhdl) {
+ libusb_release_interface(usb->devhdl, USB_INTERFACE);
+ libusb_close(usb->devhdl);
+ usb->devhdl = NULL;
+ }
+ return SR_ERR;
+ }
-static int dev_clear(void)
-{
- return std_dev_clear(di, NULL);
+ return SR_OK;
}
static int dev_open(struct sr_dev_inst *sdi)
{
- (void)sdi;
+ struct dev_context *devc;
+ int ret;
+ int64_t timediff_us, timediff_ms;
+
+ devc = sdi->priv;
+
+ /*
+ * If the firmware was recently uploaded, wait up to MAX_RENUM_DELAY_MS
+ * milliseconds for the FX2 to renumerate.
+ */
+ ret = SR_ERR;
+ if (devc->fw_updated > 0) {
+ sr_info("Waiting for device to reset.");
+ /* Takes >= 300ms for the FX2 to be gone from the USB bus. */
+ g_usleep(300 * 1000);
+ timediff_ms = 0;
+ while (timediff_ms < MAX_RENUM_DELAY_MS) {
+ if ((ret = logic16_dev_open(sdi)) == SR_OK)
+ break;
+ g_usleep(100 * 1000);
+
+ timediff_us = g_get_monotonic_time() - devc->fw_updated;
+ timediff_ms = timediff_us / 1000;
+ sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
+ }
+ if (ret != SR_OK) {
+ sr_err("Device failed to renumerate.");
+ return SR_ERR;
+ }
+ sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
+ } else {
+ sr_info("Firmware upload was not needed.");
+ ret = logic16_dev_open(sdi);
+ }
- /* TODO: get handle from sdi->conn and open it. */
+ if (ret != SR_OK) {
+ sr_err("Unable to open device.");
+ return SR_ERR;
+ }
- sdi->status = SR_ST_ACTIVE;
+ if (devc->cur_samplerate == 0) {
+ /* Samplerate hasn't been set; default to the slowest one. */
+ devc->cur_samplerate = samplerates[0];
+ }
return SR_OK;
}
static int dev_close(struct sr_dev_inst *sdi)
{
- (void)sdi;
+ struct sr_usb_dev_inst *usb;
- /* TODO: get handle from sdi->conn and close it. */
+ usb = sdi->conn;
+ if (usb->devhdl == NULL)
+ return SR_ERR;
+ sr_info("Closing device %d on %d.%d interface %d.",
+ sdi->index, usb->bus, usb->address, USB_INTERFACE);
+ libusb_release_interface(usb->devhdl, USB_INTERFACE);
+ libusb_close(usb->devhdl);
+ usb->devhdl = NULL;
sdi->status = SR_ST_INACTIVE;
return SR_OK;
static int cleanup(void)
{
- dev_clear();
+ int ret;
+ struct drv_context *drvc;
- /* TODO: free other driver resources, if any. */
+ if (!(drvc = di->priv))
+ /* Can get called on an unused driver, doesn't matter. */
+ return SR_OK;
- return SR_OK;
+
+ ret = std_dev_clear(di, NULL);
+ g_free(drvc);
+ di->priv = NULL;
+
+ return ret;
}
-static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi)
+static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *cg)
{
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ GVariant *range[2];
+ char str[128];
int ret;
+ unsigned int i;
- (void)sdi;
- (void)data;
+ (void)cg;
ret = SR_OK;
switch (key) {
- /* TODO */
+ case SR_CONF_CONN:
+ if (!sdi || !sdi->conn)
+ return SR_ERR_ARG;
+ usb = sdi->conn;
+ if (usb->address == 255)
+ /* Device still needs to re-enumerate after firmware
+ * upload, so we don't know its (future) address. */
+ return SR_ERR;
+ snprintf(str, 128, "%d.%d", usb->bus, usb->address);
+ *data = g_variant_new_string(str);
+ break;
+ case SR_CONF_SAMPLERATE:
+ if (!sdi)
+ return SR_ERR;
+ devc = sdi->priv;
+ *data = g_variant_new_uint64(devc->cur_samplerate);
+ break;
+ case SR_CONF_VOLTAGE_THRESHOLD:
+ if (!sdi)
+ return SR_ERR;
+ devc = sdi->priv;
+ ret = SR_ERR;
+ for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
+ if (devc->selected_voltage_range !=
+ volt_thresholds[i].range)
+ continue;
+ range[0] = g_variant_new_double(volt_thresholds[i].low);
+ range[1] = g_variant_new_double(volt_thresholds[i].high);
+ *data = g_variant_new_tuple(range, 2);
+ ret = SR_OK;
+ break;
+ }
+ break;
default:
return SR_ERR_NA;
}
return ret;
}
-static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi)
+static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *cg)
{
+ struct dev_context *devc;
+ gdouble low, high;
int ret;
+ unsigned int i;
- (void)data;
+ (void)cg;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
+ devc = sdi->priv;
+
ret = SR_OK;
switch (key) {
- /* TODO */
+ case SR_CONF_SAMPLERATE:
+ devc->cur_samplerate = g_variant_get_uint64(data);
+ break;
+ case SR_CONF_LIMIT_SAMPLES:
+ devc->limit_samples = g_variant_get_uint64(data);
+ break;
+ case SR_CONF_VOLTAGE_THRESHOLD:
+ g_variant_get(data, "(dd)", &low, &high);
+ ret = SR_ERR_ARG;
+ for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
+ if (fabs(volt_thresholds[i].low - low) < 0.1 &&
+ fabs(volt_thresholds[i].high - high) < 0.1) {
+ devc->selected_voltage_range =
+ volt_thresholds[i].range;
+ ret = SR_OK;
+ break;
+ }
+ }
+ break;
default:
ret = SR_ERR_NA;
}
return ret;
}
-static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
+static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *cg)
{
+ GVariant *gvar, *range[2];
+ GVariantBuilder gvb;
int ret;
+ unsigned int i;
(void)sdi;
- (void)data;
+ (void)cg;
ret = SR_OK;
switch (key) {
- /* TODO */
+ case SR_CONF_SCAN_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
+ break;
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
+ break;
+ case SR_CONF_SAMPLERATE:
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
+ gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"),
+ samplerates, ARRAY_SIZE(samplerates), sizeof(uint64_t));
+ g_variant_builder_add(&gvb, "{sv}", "samplerates", gvar);
+ *data = g_variant_builder_end(&gvb);
+ break;
+ case SR_CONF_VOLTAGE_THRESHOLD:
+ g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
+ for (i = 0; i < ARRAY_SIZE(volt_thresholds); i++) {
+ range[0] = g_variant_new_double(volt_thresholds[i].low);
+ range[1] = g_variant_new_double(volt_thresholds[i].high);
+ gvar = g_variant_new_tuple(range, 2);
+ g_variant_builder_add_value(&gvb, gvar);
+ }
+ *data = g_variant_builder_end(&gvb);
+ break;
+ case SR_CONF_TRIGGER_MATCH:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
+ soft_trigger_matches, ARRAY_SIZE(soft_trigger_matches),
+ sizeof(int32_t));
+ break;
default:
return SR_ERR_NA;
}
return ret;
}
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static void abort_acquisition(struct dev_context *devc)
{
- (void)sdi;
- (void)cb_data;
+ int i;
+
+ devc->sent_samples = -1;
+
+ for (i = devc->num_transfers - 1; i >= 0; i--) {
+ if (devc->transfers[i])
+ libusb_cancel_transfer(devc->transfers[i]);
+ }
+}
+
+static unsigned int bytes_per_ms(struct dev_context *devc)
+{
+ return devc->cur_samplerate * devc->num_channels / 8000;
+}
+
+static size_t get_buffer_size(struct dev_context *devc)
+{
+ size_t s;
+
+ /*
+ * The buffer should be large enough to hold 10ms of data and
+ * a multiple of 512.
+ */
+ s = 10 * bytes_per_ms(devc);
+ return (s + 511) & ~511;
+}
+
+static unsigned int get_number_of_transfers(struct dev_context *devc)
+{
+ unsigned int n;
+
+ /* Total buffer size should be able to hold about 500ms of data. */
+ n = 500 * bytes_per_ms(devc) / get_buffer_size(devc);
+
+ if (n > NUM_SIMUL_TRANSFERS)
+ return NUM_SIMUL_TRANSFERS;
+
+ return n;
+}
+
+static unsigned int get_timeout(struct dev_context *devc)
+{
+ size_t total_size;
+ unsigned int timeout;
+
+ total_size = get_buffer_size(devc) * get_number_of_transfers(devc);
+ timeout = total_size / bytes_per_ms(devc);
+ return timeout + timeout / 4; /* Leave a headroom of 25% percent. */
+}
+
+static int configure_channels(const struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ struct sr_channel *ch;
+ GSList *l;
+ uint16_t channel_bit;
+
+ devc = sdi->priv;
+
+ devc->cur_channels = 0;
+ devc->num_channels = 0;
+ for (l = sdi->channels; l; l = l->next) {
+ ch = (struct sr_channel *)l->data;
+ if (ch->enabled == FALSE)
+ continue;
+
+ channel_bit = 1 << (ch->index);
+
+ devc->cur_channels |= channel_bit;
+
+#ifdef WORDS_BIGENDIAN
+ /*
+ * Output logic data should be stored in little endian format.
+ * To speed things up during conversion, do the switcharoo
+ * here instead.
+ */
+ channel_bit = 1 << (ch->index ^ 8);
+#endif
+
+ devc->channel_masks[devc->num_channels++] = channel_bit;
+ }
+
+ return SR_OK;
+}
+
+static int receive_data(int fd, int revents, void *cb_data)
+{
+ struct timeval tv;
+ struct dev_context *devc;
+ struct drv_context *drvc;
+ const struct sr_dev_inst *sdi;
+
+ (void)fd;
+ (void)revents;
+
+ sdi = cb_data;
+ drvc = di->priv;
+ devc = sdi->priv;
+
+ tv.tv_sec = tv.tv_usec = 0;
+ libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
+
+ if (devc->sent_samples == -2) {
+ logic16_abort_acquisition(sdi);
+ abort_acquisition(devc);
+ }
+
+ return TRUE;
+}
+
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
+{
+ struct dev_context *devc;
+ struct drv_context *drvc;
+ struct sr_usb_dev_inst *usb;
+ struct sr_trigger *trigger;
+ struct libusb_transfer *transfer;
+ unsigned int i, timeout, num_transfers;
+ int ret;
+ unsigned char *buf;
+ size_t size, convsize;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- /* TODO: configure hardware, reset acquisition state, set up
- * callbacks and send header packet. */
+ drvc = di->priv;
+ devc = sdi->priv;
+ usb = sdi->conn;
+
+ /* Configures devc->cur_channels. */
+ if (configure_channels(sdi) != SR_OK) {
+ sr_err("Failed to configure channels.");
+ return SR_ERR;
+ }
+
+ devc->cb_data = cb_data;
+ devc->sent_samples = 0;
+ devc->empty_transfer_count = 0;
+ devc->cur_channel = 0;
+ memset(devc->channel_data, 0, sizeof(devc->channel_data));
+
+ if ((trigger = sr_session_trigger_get(sdi->session))) {
+ devc->stl = soft_trigger_logic_new(sdi, trigger);
+ devc->trigger_fired = FALSE;
+ } else
+ devc->trigger_fired = TRUE;
+
+ timeout = get_timeout(devc);
+ num_transfers = get_number_of_transfers(devc);
+ size = get_buffer_size(devc);
+ convsize = (size / devc->num_channels + 2) * 16;
+ devc->submitted_transfers = 0;
+
+ devc->convbuffer_size = convsize;
+ if (!(devc->convbuffer = g_try_malloc(convsize))) {
+ sr_err("Conversion buffer malloc failed.");
+ return SR_ERR_MALLOC;
+ }
+
+ devc->transfers = g_try_malloc0(sizeof(*devc->transfers) * num_transfers);
+ if (!devc->transfers) {
+ sr_err("USB transfers malloc failed.");
+ g_free(devc->convbuffer);
+ return SR_ERR_MALLOC;
+ }
+
+ if ((ret = logic16_setup_acquisition(sdi, devc->cur_samplerate,
+ devc->cur_channels)) != SR_OK) {
+ g_free(devc->transfers);
+ g_free(devc->convbuffer);
+ return ret;
+ }
+
+ devc->num_transfers = num_transfers;
+ for (i = 0; i < num_transfers; i++) {
+ if (!(buf = g_try_malloc(size))) {
+ sr_err("USB transfer buffer malloc failed.");
+ if (devc->submitted_transfers)
+ abort_acquisition(devc);
+ else {
+ g_free(devc->transfers);
+ g_free(devc->convbuffer);
+ }
+ return SR_ERR_MALLOC;
+ }
+ transfer = libusb_alloc_transfer(0);
+ libusb_fill_bulk_transfer(transfer, usb->devhdl,
+ 2 | LIBUSB_ENDPOINT_IN, buf, size,
+ logic16_receive_transfer, (void *)sdi, timeout);
+ if ((ret = libusb_submit_transfer(transfer)) != 0) {
+ sr_err("Failed to submit transfer: %s.",
+ libusb_error_name(ret));
+ libusb_free_transfer(transfer);
+ g_free(buf);
+ abort_acquisition(devc);
+ return SR_ERR;
+ }
+ devc->transfers[i] = transfer;
+ devc->submitted_transfers++;
+ }
+
+ devc->ctx = drvc->sr_ctx;
+
+ usb_source_add(sdi->session, devc->ctx, timeout, receive_data, (void *)sdi);
+
+ /* Send header packet to the session bus. */
+ std_session_send_df_header(cb_data, LOG_PREFIX);
+
+ if ((ret = logic16_start_acquisition(sdi)) != SR_OK) {
+ abort_acquisition(devc);
+ return ret;
+ }
return SR_OK;
}
static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
+ int ret;
+
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- /* TODO: stop acquisition. */
+ ret = logic16_abort_acquisition(sdi);
- return SR_OK;
+ abort_acquisition(sdi->priv);
+
+ return ret;
}
SR_PRIV struct sr_dev_driver saleae_logic16_driver_info = {
.cleanup = cleanup,
.scan = scan,
.dev_list = dev_list,
- .dev_clear = dev_clear,
+ .dev_clear = NULL,
.config_get = config_get,
.config_set = config_set,
.config_list = config_list,
projects / libsigrok.git / blobdiff