/*
* This file is part of the libsigrok project.
*
+ * Copyright (C) 2022 Gerhard Sittig <gerhard.sittig@gmx.net>
* Copyright (C) 2020 Florian Schmidt <schmidt_florian@gmx.de>
* Copyright (C) 2013 Marcus Comstedt <marcus@mc.pp.se>
* Copyright (C) 2013 Bert Vermeulen <bert@biot.com>
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-/* mostly stolen from src/hardware/saleae-logic16/ */
+/*
+ * This driver implementation initially was derived from the
+ * src/hardware/saleae-logic16/ source code.
+ */
#include <config.h>
-#include <glib.h>
-#include <libusb.h>
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
+
#include <libsigrok/libsigrok.h>
+#include <string.h>
+
#include "libsigrok-internal.h"
#include "protocol.h"
static const uint32_t scanopts[] = {
SR_CONF_CONN,
+ SR_CONF_PROBE_NAMES,
};
static const uint32_t drvopts[] = {
SR_CONF_LOGIC_ANALYZER,
+ SR_CONF_SIGNAL_GENERATOR,
};
static const uint32_t devopts[] = {
- /* TODO: SR_CONF_CONTINUOUS, */
SR_CONF_CONN | SR_CONF_GET,
SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
- SR_CONF_LIMIT_SAMPLES | SR_CONF_SET | SR_CONF_GET | SR_CONF_LIST,
+ SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+ SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
+#if WITH_THRESHOLD_DEVCFG
SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
- SR_CONF_LOGIC_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
- SR_CONF_LOGIC_THRESHOLD_CUSTOM | SR_CONF_GET | SR_CONF_SET,
+#endif
SR_CONF_TRIGGER_MATCH | SR_CONF_LIST,
SR_CONF_CAPTURE_RATIO | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_CONTINUOUS | SR_CONF_GET | SR_CONF_SET,
+};
+
+static const uint32_t devopts_cg_logic[] = {
+#if !WITH_THRESHOLD_DEVCFG
+ SR_CONF_VOLTAGE_THRESHOLD | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
+#endif
+};
+
+static const uint32_t devopts_cg_pwm[] = {
+ SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_SET,
+ SR_CONF_DUTY_CYCLE | SR_CONF_GET | SR_CONF_SET,
};
static const int32_t trigger_matches[] = {
SR_TRIGGER_FALLING,
};
-static const char *channel_names[] = {
- "0", "1", "2", "3", "4", "5", "6", "7", "8",
- "9", "10", "11", "12", "13", "14", "15",
+static const char *channel_names_logic[] = {
+ "CH0", "CH1", "CH2", "CH3", "CH4", "CH5", "CH6", "CH7",
+ "CH8", "CH9", "CH10", "CH11", "CH12", "CH13", "CH14", "CH15",
+ "CH16", "CH17", "CH18", "CH19", "CH20", "CH21", "CH22", "CH23",
+ "CH24", "CH25", "CH26", "CH27", "CH28", "CH29", "CH30", "CH31",
+};
+
+static const char *channel_names_pwm[] = {
+ "PWM1", "PWM2",
};
-static const uint64_t samplerates[] = {
+/*
+ * The devices have an upper samplerate limit of 100/200/500 MHz each.
+ * But their hardware uses different base clocks (100/200/800MHz, this
+ * is _not_ a typo) and a 16bit divider. Which results in per-model ranges
+ * of supported rates which not only differ in the upper boundary, but
+ * also at the lower boundary. It's assumed that the 10kHz rate is not
+ * useful enough to provide by all means. Starting at 20kHz for all models
+ * simplfies the implementation of the config API routines, and eliminates
+ * redundancy in these samplerates tables.
+ *
+ * Streaming mode is constrained by the channel count and samplerate
+ * product (the bits per second which need to travel the USB connection
+ * while the acquisition is executing). Because streaming mode does not
+ * compress the capture data, a later implementation may desire a finer
+ * resolution. For now let's just stick with the 1/2/5 steps.
+ */
+
+static const uint64_t rates_500mhz[] = {
SR_KHZ(20),
SR_KHZ(50),
SR_KHZ(100),
SR_KHZ(500),
SR_MHZ(1),
SR_MHZ(2),
- SR_MHZ(4),
SR_MHZ(5),
- SR_MHZ(8),
SR_MHZ(10),
SR_MHZ(20),
SR_MHZ(50),
SR_MHZ(100),
SR_MHZ(200),
+ SR_MHZ(500),
};
-static const float logic_threshold_value[] = {
- 1.58,
- 2.5,
- 1.165,
- 1.5,
- 1.25,
- 0.9,
- 0.75,
- 0.60,
- 0.45,
+static const uint64_t rates_200mhz[] = {
+ SR_KHZ(20),
+ SR_KHZ(50),
+ SR_KHZ(100),
+ SR_KHZ(200),
+ SR_KHZ(500),
+ SR_MHZ(1),
+ SR_MHZ(2),
+ SR_MHZ(5),
+ SR_MHZ(10),
+ SR_MHZ(20),
+ SR_MHZ(50),
+ SR_MHZ(100),
+ SR_MHZ(200),
+};
+
+static const uint64_t rates_100mhz[] = {
+ SR_KHZ(20),
+ SR_KHZ(50),
+ SR_KHZ(100),
+ SR_KHZ(200),
+ SR_KHZ(500),
+ SR_MHZ(1),
+ SR_MHZ(2),
+ SR_MHZ(5),
+ SR_MHZ(10),
+ SR_MHZ(20),
+ SR_MHZ(50),
+ SR_MHZ(100),
};
-static const char *logic_threshold[] = {
- "TTL 5V",
- "CMOS 5V",
- "CMOS 3.3V",
- "CMOS 3.0V",
- "CMOS 2.5V",
- "CMOS 1.8V",
- "CMOS 1.5V",
- "CMOS 1.2V",
- "CMOS 0.9V",
- "USER",
+/*
+ * Only list a few discrete voltages, to form a useful set which covers
+ * most logic families. Too many choices can make some applications use
+ * a slider again. Which may lack a scale for the current value, and
+ * leave users without feedback what the currently used value might be.
+ */
+static const double threshold_ranges[][2] = {
+ { 0.4, 0.4, },
+ { 0.6, 0.6, },
+ { 0.9, 0.9, },
+ { 1.2, 1.2, },
+ { 1.4, 1.4, }, /* Default, 1.4V, index 4. */
+ { 2.0, 2.0, },
+ { 2.5, 2.5, },
+ { 4.0, 4.0, },
};
+#define LOGIC_THRESHOLD_IDX_DFLT 4
+
+static double threshold_voltage(const struct sr_dev_inst *sdi, double *high)
+{
+ struct dev_context *devc;
+ size_t idx;
+ double voltage;
+
+ devc = sdi->priv;
+ idx = devc->threshold_voltage_idx;
+ voltage = threshold_ranges[idx][0];
+ if (high)
+ *high = threshold_ranges[idx][1];
+
+ return voltage;
+}
+
+/* Convenience. Release an allocated devc from error paths. */
+static void kingst_la2016_free_devc(struct dev_context *devc)
+{
+ if (!devc)
+ return;
+ g_free(devc->mcu_firmware);
+ g_free(devc->fpga_bitstream);
+ g_free(devc);
+}
+
+/* Convenience. Release an allocated sdi from error paths. */
+static void kingst_la2016_free_sdi(struct sr_dev_inst *sdi)
+{
+ struct sr_usb_dev_inst *usb;
+ struct dev_context *devc;
+
+ if (!sdi)
+ return;
+
+ usb = sdi->conn;
+ if (usb && usb->devhdl)
+ sr_usb_close(usb);
+ sr_usb_dev_inst_free(usb);
+
+ devc = sdi->priv;
+ kingst_la2016_free_devc(devc);
+
+ sr_dev_inst_free(sdi);
+}
+
+/* Convenience. Open a USB device (including claiming an interface). */
+static int la2016_open_usb(struct sr_usb_dev_inst *usb,
+ libusb_device *dev, gboolean show_message)
+{
+ int ret;
+
+ ret = libusb_open(dev, &usb->devhdl);
+ if (ret != 0) {
+ if (show_message) {
+ sr_err("Cannot open device: %s.",
+ libusb_error_name(ret));
+ }
+ return SR_ERR_IO;
+ }
+
+ if (usb->address == 0xff) {
+ /*
+ * First encounter after firmware upload.
+ * Grab current address after enumeration.
+ */
+ usb->address = libusb_get_device_address(dev);
+ }
+
+ ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
+ if (ret == LIBUSB_ERROR_BUSY) {
+ sr_err("Cannot claim USB interface. Another program or driver using it?");
+ return SR_ERR_IO;
+ } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
+ sr_err("Device has been disconnected.");
+ return SR_ERR_IO;
+ } else if (ret != 0) {
+ sr_err("Cannot claim USB interface: %s.",
+ libusb_error_name(ret));
+ return SR_ERR_IO;
+ }
+
+ return SR_OK;
+}
+
+/* Convenience. Close an opened USB device (and release the interface). */
+static void la2016_close_usb(struct sr_usb_dev_inst *usb)
+{
+
+ if (!usb)
+ return;
+
+ if (usb->devhdl) {
+ libusb_release_interface(usb->devhdl, USB_INTERFACE);
+ libusb_close(usb->devhdl);
+ usb->devhdl = NULL;
+ }
+}
+
+/* Communicate to an USB device to identify the Kingst LA model. */
+static int la2016_identify_read(struct sr_dev_inst *sdi,
+ struct sr_usb_dev_inst *usb, libusb_device *dev,
+ gboolean show_message)
+{
+ int ret;
+
+ ret = la2016_open_usb(usb, dev, show_message);
+ if (ret != SR_OK) {
+ if (show_message)
+ sr_err("Cannot communicate to MCU firmware.");
+ return ret;
+ }
+
+ /*
+ * Also complete the hardware configuration (FPGA bitstream)
+ * when MCU firmware communication became operational. Either
+ * failure is considered fatal when probing for the device.
+ */
+ ret = la2016_identify_device(sdi, show_message);
+ if (ret == SR_OK) {
+ ret = la2016_init_hardware(sdi);
+ }
-#define MAX_NUM_LOGIC_THRESHOLD_ENTRIES ARRAY_SIZE(logic_threshold)
+ la2016_close_usb(usb);
+
+ return ret;
+}
+
+/* Find given conn_id in another USB enum. Identify Kingst LA model. */
+static int la2016_identify_enum(struct sr_dev_inst *sdi)
+{
+ struct sr_dev_driver *di;
+ struct drv_context *drvc;
+ struct sr_context *ctx;
+ libusb_device **devlist, *dev;
+ struct libusb_device_descriptor des;
+ int ret, id_ret;
+ size_t device_count, dev_idx;
+ char conn_id[64];
+
+ di = sdi->driver;
+ drvc = di->context;
+ ctx = drvc->sr_ctx;;
+
+ ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
+ if (ret < 0)
+ return SR_ERR_IO;
+ device_count = ret;
+ if (!device_count)
+ return SR_ERR_IO;
+ id_ret = SR_ERR_IO;
+ for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
+ dev = devlist[dev_idx];
+ libusb_get_device_descriptor(dev, &des);
+ if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
+ continue;
+ if (des.iProduct != LA2016_IPRODUCT_INDEX)
+ continue;
+ ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
+ if (ret < 0)
+ continue;
+ if (strcmp(sdi->connection_id, conn_id) != 0)
+ continue;
+ id_ret = la2016_identify_read(sdi, sdi->conn, dev, FALSE);
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+
+ return id_ret;
+}
+
+/* Wait for a device to re-appear after firmware upload. */
+static int la2016_identify_wait(struct sr_dev_inst *sdi)
+{
+ struct dev_context *devc;
+ uint64_t reset_done, now, elapsed_ms;
+ int ret;
+
+ devc = sdi->priv;
+
+ sr_info("Waiting for device to reset after firmware upload.");
+ now = g_get_monotonic_time();
+ reset_done = devc->fw_uploaded + RENUM_GONE_DELAY_MS * 1000;
+ if (now < reset_done)
+ g_usleep(reset_done - now);
+ do {
+ now = g_get_monotonic_time();
+ elapsed_ms = (now - devc->fw_uploaded) / 1000;
+ sr_spew("Waited %" PRIu64 "ms.", elapsed_ms);
+ ret = la2016_identify_enum(sdi);
+ if (ret == SR_OK) {
+ devc->fw_uploaded = 0;
+ break;
+ }
+ g_usleep(RENUM_POLL_INTERVAL_MS * 1000);
+ } while (elapsed_ms < RENUM_CHECK_PERIOD_MS);
+ if (ret != SR_OK) {
+ sr_err("Device failed to re-enumerate.");
+ return ret;
+ }
+ sr_info("Device came back after %" PRIi64 "ms.", elapsed_ms);
+
+ return SR_OK;
+}
+
+/*
+ * Open given conn_id from another USB enum. Used by dev_open(). Similar
+ * to, and should be kept in sync with la2016_identify_enum().
+ */
+static int la2016_open_enum(struct sr_dev_inst *sdi)
+{
+ struct sr_dev_driver *di;
+ struct drv_context *drvc;
+ struct sr_context *ctx;
+ libusb_device **devlist, *dev;
+ struct libusb_device_descriptor des;
+ int ret, open_ret;
+ size_t device_count, dev_idx;
+ char conn_id[64];
+
+ di = sdi->driver;
+ drvc = di->context;
+ ctx = drvc->sr_ctx;;
+
+ ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
+ if (ret < 0)
+ return SR_ERR_IO;
+ device_count = ret;
+ if (!device_count)
+ return SR_ERR_IO;
+ open_ret = SR_ERR_IO;
+ for (dev_idx = 0; dev_idx < device_count; dev_idx++) {
+ dev = devlist[dev_idx];
+ libusb_get_device_descriptor(dev, &des);
+ if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
+ continue;
+ if (des.iProduct != LA2016_IPRODUCT_INDEX)
+ continue;
+ ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
+ if (ret < 0)
+ continue;
+ if (strcmp(sdi->connection_id, conn_id) != 0)
+ continue;
+ open_ret = la2016_open_usb(sdi->conn, dev, TRUE);
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+
+ return open_ret;
+}
static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
struct drv_context *drvc;
+ struct sr_context *ctx;
struct dev_context *devc;
struct sr_dev_inst *sdi;
struct sr_usb_dev_inst *usb;
struct sr_config *src;
GSList *l;
- GSList *devices;
+ GSList *devices, *found_devices, *renum_devices;
GSList *conn_devices;
struct libusb_device_descriptor des;
- libusb_device **devlist;
- unsigned int i, j;
+ libusb_device **devlist, *dev;
+ size_t dev_count, dev_idx, ch_idx;
+ uint8_t bus, addr;
+ uint16_t pid;
const char *conn;
- char connection_id[64];
- int64_t fw_updated;
- unsigned int dev_addr;
+ const char *probe_names;
+ char conn_id[64];
+ int ret;
+ size_t ch_off, ch_max;
+ struct sr_channel *ch;
+ struct sr_channel_group *cg;
drvc = di->context;
+ ctx = drvc->sr_ctx;;
conn = NULL;
+ conn_devices = NULL;
+ probe_names = 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;
+ case SR_CONF_PROBE_NAMES:
+ probe_names = 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;
+ conn_devices = sr_usb_find(ctx->libusb_ctx, conn);
+ if (conn && !conn_devices) {
+ sr_err("Cannot find the specified connection '%s'.", conn);
+ return NULL;
+ }
- /* Find all LA2016 devices and upload firmware to them. */
+ /*
+ * Find all LA2016 devices, optionally upload firmware to them.
+ * Defer completion of sdi/devc creation until all (selected)
+ * devices were found in a usable state, and their models got
+ * identified which affect their feature set. It appears that
+ * we cannot communicate to the device within the same USB enum
+ * cycle, needs another USB enumeration after firmware upload.
+ */
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;
+ found_devices = NULL;
+ renum_devices = NULL;
+ ret = libusb_get_device_list(ctx->libusb_ctx, &devlist);
+ if (ret < 0) {
+ sr_err("Cannot get device list: %s.", libusb_error_name(ret));
+ return devices;
+ }
+ dev_count = ret;
+ for (dev_idx = 0; dev_idx < dev_count; dev_idx++) {
+ dev = devlist[dev_idx];
+ bus = libusb_get_bus_number(dev);
+ addr = libusb_get_device_address(dev);
+
+ /* Filter by connection when externally specified. */
+ for (l = conn_devices; l; l = l->next) {
+ usb = l->data;
+ if (usb->bus == bus && usb->address == addr)
+ break;
}
-
- libusb_get_device_descriptor(devlist[i], &des);
-
- if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
+ if (conn_devices && !l) {
+ sr_spew("Bus %hhu, addr %hhu do not match specified filter.",
+ bus, addr);
continue;
+ }
+ /* Check USB VID:PID. Get the connection string. */
+ libusb_get_device_descriptor(dev, &des);
if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID)
continue;
+ pid = des.idProduct;
+ ret = usb_get_port_path(dev, conn_id, sizeof(conn_id));
+ if (ret < 0)
+ continue;
+ sr_dbg("USB enum found %04x:%04x at path %s, %d.%d.",
+ des.idVendor, des.idProduct, conn_id, bus, addr);
+ usb = sr_usb_dev_inst_new(bus, addr, NULL);
- /* Already has the firmware */
- sr_dbg("Found a LA2016 device.");
- sdi = g_malloc0(sizeof(struct sr_dev_inst));
+ sdi = g_malloc0(sizeof(*sdi));
+ sdi->driver = di;
sdi->status = SR_ST_INITIALIZING;
- sdi->connection_id = g_strdup(connection_id);
+ sdi->inst_type = SR_INST_USB;
+ sdi->connection_id = g_strdup(conn_id);
+ sdi->conn = usb;
- fw_updated = 0;
- dev_addr = libusb_get_device_address(devlist[i]);
- if (des.iProduct != 2) {
- sr_info("device at '%s' has no firmware loaded!", connection_id);
+ devc = g_malloc0(sizeof(*devc));
+ sdi->priv = devc;
- if (la2016_upload_firmware(drvc->sr_ctx, devlist[i], des.idProduct) != SR_OK) {
- sr_err("uC firmware upload failed!");
- g_free(sdi->connection_id);
- g_free(sdi);
+ /*
+ * Load MCU firmware if it is currently missing. Which
+ * makes the device disappear and renumerate in USB.
+ * We need to come back another time to communicate to
+ * this device.
+ */
+ devc->fw_uploaded = 0;
+ devc->usb_pid = pid;
+ if (des.iProduct != LA2016_IPRODUCT_INDEX) {
+ sr_info("Uploading MCU firmware to '%s'.", conn_id);
+ ret = la2016_upload_firmware(sdi, ctx, dev, FALSE);
+ if (ret != SR_OK) {
+ sr_err("MCU firmware upload failed.");
+ kingst_la2016_free_sdi(sdi);
+ continue;
+ }
+ devc->fw_uploaded = g_get_monotonic_time();
+ usb->address = 0xff;
+ renum_devices = g_slist_append(renum_devices, sdi);
+ continue;
+ } else {
+ ret = la2016_upload_firmware(sdi, NULL, NULL, TRUE);
+ if (ret != SR_OK) {
+ sr_err("MCU firmware filename check failed.");
+ kingst_la2016_free_sdi(sdi);
continue;
}
- fw_updated = g_get_monotonic_time();
- dev_addr = 0xff; /* to mark that we don't know address yet... ugly */
}
- sdi->vendor = g_strdup("Kingst");
- sdi->model = g_strdup("LA2016");
-
- for (j = 0; j < ARRAY_SIZE(channel_names); j++)
- sr_channel_new(sdi, j, SR_CHANNEL_LOGIC, TRUE, channel_names[j]);
-
- devices = g_slist_append(devices, sdi);
-
- devc = g_malloc0(sizeof(struct dev_context));
- sdi->priv = devc;
- devc->fw_updated = fw_updated;
- devc->threshold_voltage_idx = 0;
- devc->threshold_voltage = logic_threshold_value[devc->threshold_voltage_idx];
-
- sdi->status = SR_ST_INACTIVE;
- sdi->inst_type = SR_INST_USB;
-
- sdi->conn = sr_usb_dev_inst_new(
- libusb_get_bus_number(devlist[i]),
- dev_addr, NULL);
+ /*
+ * Communicate to the MCU firmware to access EEPROM data
+ * which lets us identify the device type. Then stop, to
+ * share remaining sdi/devc creation with those devices
+ * which had their MCU firmware uploaded above and which
+ * get revisited later.
+ */
+ ret = la2016_identify_read(sdi, usb, dev, TRUE);
+ if (ret != SR_OK || !devc->model) {
+ sr_err("Unknown or unsupported device type.");
+ kingst_la2016_free_sdi(sdi);
+ continue;
+ }
+ found_devices = g_slist_append(found_devices, sdi);
}
libusb_free_device_list(devlist, 1);
- g_slist_free_full(conn_devices, (GDestroyNotify)sr_usb_dev_inst_free);
-
- return std_scan_complete(di, devices);
-}
-
-static int la2016_dev_open(struct sr_dev_inst *sdi)
-{
- struct sr_dev_driver *di;
- libusb_device **devlist;
- struct sr_usb_dev_inst *usb;
- struct libusb_device_descriptor des;
- struct drv_context *drvc;
- int ret, i, device_count;
- char connection_id[64];
+ g_slist_free_full(conn_devices, sr_usb_dev_inst_free_cb);
- di = sdi->driver;
- drvc = di->context;
- usb = sdi->conn;
- ret = SR_ERR;
-
- 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;
- }
-
- for (i = 0; i < device_count; i++) {
- libusb_get_device_descriptor(devlist[i], &des);
-
- if (des.idVendor != LA2016_VID || des.idProduct != LA2016_PID || des.iProduct != 2)
+ /*
+ * Wait for devices to re-appear after firmware upload. Append
+ * the yet unidentified device to the list of found devices, or
+ * release the previously allocated sdi/devc.
+ */
+ for (l = renum_devices; l; l = l->next) {
+ sdi = l->data;
+ devc = sdi->priv;
+ ret = la2016_identify_wait(sdi);
+ if (ret != SR_OK || !devc->model) {
+ sr_dbg("Skipping unusable '%s'.", sdi->connection_id);
+ kingst_la2016_free_sdi(sdi);
continue;
+ }
+ found_devices = g_slist_append(found_devices, sdi);
+ }
+ g_slist_free(renum_devices);
- if ((sdi->status == SR_ST_INITIALIZING) || (sdi->status == SR_ST_INACTIVE)) {
- /*
- * Check device by its physical USB bus/port address.
- */
- if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
- continue;
+ /*
+ * All found devices got identified, their type is known here.
+ * Complete the sdi/devc creation. Assign default settings
+ * because the vendor firmware would not let us read back the
+ * previously written configuration.
+ */
+ for (l = found_devices; l; l = l->next) {
+ sdi = l->data;
+ devc = sdi->priv;
- if (strcmp(sdi->connection_id, connection_id))
- /* This is not the one. */
- continue;
+ sdi->vendor = g_strdup("Kingst");
+ sdi->model = g_strdup(devc->model->name);
+ ch_off = 0;
+
+ /* Create the "Logic" channel group. */
+ ch_max = ARRAY_SIZE(channel_names_logic);
+ if (ch_max > devc->model->channel_count)
+ ch_max = devc->model->channel_count;
+ devc->channel_names_logic = sr_parse_probe_names(probe_names,
+ channel_names_logic, ch_max, ch_max, &ch_max);
+ cg = sr_channel_group_new(sdi, "Logic", NULL);
+ devc->cg_logic = cg;
+ for (ch_idx = 0; ch_idx < ch_max; ch_idx++) {
+ ch = sr_channel_new(sdi, ch_off,
+ SR_CHANNEL_LOGIC, TRUE,
+ devc->channel_names_logic[ch_idx]);
+ ch_off++;
+ cg->channels = g_slist_append(cg->channels, ch);
}
- 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));
- ret = SR_ERR;
- break;
+ /* Create the "PWMx" channel groups. */
+ ch_max = ARRAY_SIZE(channel_names_pwm);
+ for (ch_idx = 0; ch_idx < ch_max; ch_idx++) {
+ const char *name;
+ name = channel_names_pwm[ch_idx];
+ cg = sr_channel_group_new(sdi, name, NULL);
+ if (!devc->cg_pwm)
+ devc->cg_pwm = cg;
+ ch = sr_channel_new(sdi, ch_off,
+ SR_CHANNEL_ANALOG, FALSE, name);
+ ch_off++;
+ cg->channels = g_slist_append(cg->channels, ch);
}
- 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.");
- ret = SR_ERR;
- break;
- } else if (ret == LIBUSB_ERROR_NO_DEVICE) {
- sr_err("Device has been disconnected.");
- ret = SR_ERR;
- break;
- } else if (ret != 0) {
- sr_err("Unable to claim interface: %s.", libusb_error_name(ret));
- ret = SR_ERR;
- break;
+ /*
+ * Ideally we'd get the previous configuration from the
+ * hardware, but this device is write-only. So we have
+ * to assign a fixed set of initial configuration values.
+ */
+ sr_sw_limits_init(&devc->sw_limits);
+ devc->sw_limits.limit_samples = 0;
+ devc->capture_ratio = 50;
+ devc->samplerate = devc->model->samplerate;
+ if (!devc->model->memory_bits)
+ devc->continuous = TRUE;
+ devc->threshold_voltage_idx = LOGIC_THRESHOLD_IDX_DFLT;
+ if (ARRAY_SIZE(devc->pwm_setting) >= 1) {
+ devc->pwm_setting[0].enabled = FALSE;
+ devc->pwm_setting[0].freq = SR_KHZ(1);
+ devc->pwm_setting[0].duty = 50;
}
-
- if ((ret = la2016_init_device(sdi)) != SR_OK) {
- sr_err("Failed to init device.");
- break;
+ if (ARRAY_SIZE(devc->pwm_setting) >= 2) {
+ devc->pwm_setting[1].enabled = FALSE;
+ devc->pwm_setting[1].freq = SR_KHZ(100);
+ devc->pwm_setting[1].duty = 50;
}
- sr_info("Opened device on %d.%d (logical) / %s (physical), interface %d.",
- usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
-
- ret = SR_OK;
-
- break;
- }
-
- libusb_free_device_list(devlist, 1);
-
- if (ret != SR_OK) {
- if (usb->devhdl) {
- libusb_release_interface(usb->devhdl, USB_INTERFACE);
- libusb_close(usb->devhdl);
- usb->devhdl = NULL;
- }
- return SR_ERR;
+ sdi->status = SR_ST_INACTIVE;
+ devices = g_slist_append(devices, sdi);
}
+ g_slist_free(found_devices);
- return SR_OK;
+ return std_scan_complete(di, devices);
}
static int dev_open(struct sr_dev_inst *sdi)
{
struct dev_context *devc;
- int64_t timediff_us, timediff_ms;
- uint64_t reset_done;
- uint64_t now;
int ret;
+ size_t ch;
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 after firmware upload.");
- /* Takes >= 2000ms for the uC to be gone from the USB bus. */
- reset_done = devc->fw_updated + 18 * (uint64_t)1e5; /* 1.8 seconds */
- now = g_get_monotonic_time();
- if (reset_done > now)
- g_usleep(reset_done - now);
- timediff_ms = 0;
- while (timediff_ms < MAX_RENUM_DELAY_MS) {
- g_usleep(200 * 1000);
-
- timediff_us = g_get_monotonic_time() - devc->fw_updated;
- timediff_ms = timediff_us / 1000;
-
- if ((ret = la2016_dev_open(sdi)) == SR_OK)
- break;
- sr_spew("Waited %" PRIi64 "ms.", timediff_ms);
- }
- if (ret != SR_OK) {
- sr_err("Device failed to re-enumerate.");
- return SR_ERR;
- }
- sr_info("Device came back after %" PRIi64 "ms.", timediff_ms);
- } else
- ret = la2016_dev_open(sdi);
-
+ ret = la2016_open_enum(sdi);
if (ret != SR_OK) {
- sr_err("Unable to open device.");
- return SR_ERR;
+ sr_err("Cannot open device.");
+ return ret;
+ }
+
+ /* Send most recent PWM configuration to the device. */
+ for (ch = 0; ch < ARRAY_SIZE(devc->pwm_setting); ch++) {
+ ret = la2016_write_pwm_config(sdi, ch);
+ if (ret != SR_OK)
+ return ret;
}
return SR_OK;
if (!usb->devhdl)
return SR_ERR_BUG;
- la2016_deinit_device(sdi);
+ la2016_release_resources(sdi);
+
+ if (WITH_DEINIT_IN_CLOSE)
+ la2016_deinit_hardware(sdi);
sr_info("Closing device on %d.%d (logical) / %s (physical) interface %d.",
usb->bus, usb->address, sdi->connection_id, USB_INTERFACE);
- libusb_release_interface(usb->devhdl, USB_INTERFACE);
- libusb_close(usb->devhdl);
- usb->devhdl = NULL;
+ la2016_close_usb(sdi->conn);
return SR_OK;
}
-static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
+/* Config API helper. Get type and index of a channel group. */
+static int get_cg_index(const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *cg,
+ int *type, size_t *logic, size_t *analog)
+{
+ struct dev_context *devc;
+ GSList *l;
+ size_t idx;
+
+ /* Preset return values. */
+ if (type)
+ *type = 0;
+ if (logic)
+ *logic = 0;
+ if (analog)
+ *analog = 0;
+
+ /* Start categorizing the received cg. */
+ if (!sdi)
+ return SR_ERR_ARG;
+ devc = sdi->priv;
+ if (!cg)
+ return SR_OK;
+ l = sdi->channel_groups;
+
+ /* First sdi->channelgroups item is "Logic". */
+ if (!l)
+ return SR_ERR_BUG;
+ if (cg == l->data) {
+ if (type)
+ *type = SR_CHANNEL_LOGIC;
+ if (logic)
+ *logic = 0;
+ return SR_OK;
+ }
+ l = l->next;
+
+ /* Next sdi->channelgroups items are "PWMx". */
+ idx = 0;
+ while (l && l->data != cg) {
+ idx++;
+ l = l->next;
+ }
+ if (l && idx < ARRAY_SIZE(devc->pwm_setting)) {
+ if (type)
+ *type = SR_CHANNEL_ANALOG;
+ if (analog)
+ *analog = idx;
+ return SR_OK;
+ }
+
+ return SR_ERR_ARG;
+}
+
+static int config_get(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
struct dev_context *devc;
+ int ret, cg_type;
+ size_t logic_idx, analog_idx;
+ struct pwm_setting *pwm;
struct sr_usb_dev_inst *usb;
- double rounded;
+ double voltage, rounded;
- (void)cg;
+ (void)rounded;
+ (void)voltage;
if (!sdi)
return SR_ERR_ARG;
devc = sdi->priv;
+ /* Check for types (and index) of channel groups. */
+ ret = get_cg_index(sdi, cg, &cg_type, &logic_idx, &analog_idx);
+ if (cg && ret != SR_OK)
+ return SR_ERR_ARG;
+
+ /* Handle requests for the "Logic" channel group. */
+ if (cg && cg_type == SR_CHANNEL_LOGIC) {
+ switch (key) {
+#if !WITH_THRESHOLD_DEVCFG
+ case SR_CONF_VOLTAGE_THRESHOLD:
+ voltage = threshold_voltage(sdi, NULL);
+ *data = std_gvar_tuple_double(voltage, voltage);
+ break;
+#endif /* WITH_THRESHOLD_DEVCFG */
+ default:
+ return SR_ERR_NA;
+ }
+ return SR_OK;
+ }
+
+ /* Handle requests for the "PWMx" channel groups. */
+ if (cg && cg_type == SR_CHANNEL_ANALOG) {
+ pwm = &devc->pwm_setting[analog_idx];
+ switch (key) {
+ case SR_CONF_ENABLED:
+ *data = g_variant_new_boolean(pwm->enabled);
+ break;
+ case SR_CONF_OUTPUT_FREQUENCY:
+ *data = g_variant_new_double(pwm->freq);
+ break;
+ case SR_CONF_DUTY_CYCLE:
+ *data = g_variant_new_double(pwm->duty);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ return SR_OK;
+ }
+
switch (key) {
case SR_CONF_CONN:
- if (!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;
*data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
break;
case SR_CONF_SAMPLERATE:
- *data = g_variant_new_uint64(devc->cur_samplerate);
+ *data = g_variant_new_uint64(devc->samplerate);
break;
case SR_CONF_LIMIT_SAMPLES:
- *data = g_variant_new_uint64(devc->limit_samples);
- break;
+ case SR_CONF_LIMIT_MSEC:
+ return sr_sw_limits_config_get(&devc->sw_limits, key, data);
case SR_CONF_CAPTURE_RATIO:
*data = g_variant_new_uint64(devc->capture_ratio);
break;
+#if WITH_THRESHOLD_DEVCFG
case SR_CONF_VOLTAGE_THRESHOLD:
- rounded = (int)(devc->threshold_voltage / 0.1) * 0.1;
- *data = std_gvar_tuple_double(rounded, rounded + 0.1);
- return SR_OK;
- case SR_CONF_LOGIC_THRESHOLD:
- *data = g_variant_new_string(logic_threshold[devc->threshold_voltage_idx]);
+ voltage = threshold_voltage(sdi, NULL);
+ *data = std_gvar_tuple_double(voltage, voltage);
break;
- case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
- *data = g_variant_new_double(devc->threshold_voltage);
+#endif /* WITH_THRESHOLD_DEVCFG */
+ case SR_CONF_CONTINUOUS:
+ *data = g_variant_new_boolean(devc->continuous);
break;
-
default:
return SR_ERR_NA;
}
return SR_OK;
}
-static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
+static int config_set(uint32_t key, GVariant *data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
struct dev_context *devc;
- double low, high;
+ int ret, cg_type;
+ size_t logic_idx, analog_idx;
+ struct pwm_setting *pwm;
+ double value_f;
int idx;
-
- (void)cg;
+ gboolean on;
devc = sdi->priv;
+ /* Check for types (and index) of channel groups. */
+ ret = get_cg_index(sdi, cg, &cg_type, &logic_idx, &analog_idx);
+ if (cg && ret != SR_OK)
+ return SR_ERR_ARG;
+
+ /* Handle requests for the "Logic" channel group. */
+ if (cg && cg_type == SR_CHANNEL_LOGIC) {
+ switch (key) {
+#if !WITH_THRESHOLD_DEVCFG
+ case SR_CONF_LOGIC_THRESHOLD:
+ idx = std_double_tuple_idx(data,
+ ARRAY_AND_SIZE(threshold_ranges));
+ if (idx < 0)
+ return SR_ERR_ARG;
+ devc->threshold_voltage_idx = idx;
+ break;
+#endif /* WITH_THRESHOLD_DEVCFG */
+ default:
+ return SR_ERR_NA;
+ }
+ return SR_OK;
+ }
+
+ /* Handle requests for the "PWMx" channel groups. */
+ if (cg && cg_type == SR_CHANNEL_ANALOG) {
+ pwm = &devc->pwm_setting[analog_idx];
+ switch (key) {
+ case SR_CONF_ENABLED:
+ pwm->enabled = g_variant_get_boolean(data);
+ ret = la2016_write_pwm_config(sdi, analog_idx);
+ if (ret != SR_OK)
+ return ret;
+ break;
+ case SR_CONF_OUTPUT_FREQUENCY:
+ value_f = g_variant_get_double(data);
+ if (value_f <= 0.0 || value_f > MAX_PWM_FREQ)
+ return SR_ERR_ARG;
+ pwm->freq = value_f;
+ ret = la2016_write_pwm_config(sdi, analog_idx);
+ if (ret != SR_OK)
+ return ret;
+ break;
+ case SR_CONF_DUTY_CYCLE:
+ value_f = g_variant_get_double(data);
+ if (value_f <= 0.0 || value_f > 100.0)
+ return SR_ERR_ARG;
+ pwm->duty = value_f;
+ ret = la2016_write_pwm_config(sdi, analog_idx);
+ if (ret != SR_OK)
+ return ret;
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ return SR_OK;
+ }
+
switch (key) {
case SR_CONF_SAMPLERATE:
- devc->cur_samplerate = g_variant_get_uint64(data);
+ devc->samplerate = g_variant_get_uint64(data);
break;
case SR_CONF_LIMIT_SAMPLES:
- devc->limit_samples = g_variant_get_uint64(data);
- break;
+ case SR_CONF_LIMIT_MSEC:
+ return sr_sw_limits_config_set(&devc->sw_limits, key, data);
case SR_CONF_CAPTURE_RATIO:
devc->capture_ratio = g_variant_get_uint64(data);
break;
+#if WITH_THRESHOLD_DEVCFG
case SR_CONF_VOLTAGE_THRESHOLD:
- g_variant_get(data, "(dd)", &low, &high);
- devc->threshold_voltage = (low + high) / 2.0;
- devc->threshold_voltage_idx = MAX_NUM_LOGIC_THRESHOLD_ENTRIES - 1; /* USER */
- break;
- case SR_CONF_LOGIC_THRESHOLD: {
- if ((idx = std_str_idx(data, logic_threshold, MAX_NUM_LOGIC_THRESHOLD_ENTRIES)) < 0)
+ idx = std_double_tuple_idx(data,
+ ARRAY_AND_SIZE(threshold_ranges));
+ if (idx < 0)
return SR_ERR_ARG;
- if (idx == MAX_NUM_LOGIC_THRESHOLD_ENTRIES - 1) {
- /* user threshold */
- } else {
- devc->threshold_voltage = logic_threshold_value[idx];
- }
devc->threshold_voltage_idx = idx;
break;
- }
- case SR_CONF_LOGIC_THRESHOLD_CUSTOM:
- devc->threshold_voltage = g_variant_get_double(data);
+#endif /* WITH_THRESHOLD_DEVCFG */
+ case SR_CONF_CONTINUOUS:
+ on = g_variant_get_boolean(data);
+ if (!devc->model->memory_bits && !on)
+ return SR_ERR_ARG;
+ devc->continuous = on;
break;
default:
return SR_ERR_NA;
return SR_OK;
}
-static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
+static int config_list(uint32_t key, GVariant **data,
+ const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
+ struct dev_context *devc;
+ int ret, cg_type;
+ size_t logic_idx, analog_idx;
+
+ devc = sdi ? sdi->priv : NULL;
+
+ /* Check for types (and index) of channel groups. */
+ ret = get_cg_index(sdi, cg, &cg_type, &logic_idx, &analog_idx);
+ if (cg && ret != SR_OK)
+ return SR_ERR_ARG;
+
+ /* Handle requests for the "Logic" channel group. */
+ if (cg && cg_type == SR_CHANNEL_LOGIC) {
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ if (ARRAY_SIZE(devopts_cg_logic) == 0)
+ return SR_ERR_NA;
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic),
+ sizeof(devopts_cg_logic[0]));
+ break;
+#if !WITH_THRESHOLD_DEVCFG
+ case SR_CONF_VOLTAGE_THRESHOLD:
+ *data = std_gvar_thresholds(ARRAY_AND_SIZE(threshold_ranges));
+ break;
+#endif /* WITH_THRESHOLD_DEVCFG */
+ default:
+ return SR_ERR_NA;
+ }
+ return SR_OK;
+ }
+
+ /* Handle requests for the "PWMx" channel groups. */
+ if (cg && cg_type == SR_CHANNEL_ANALOG) {
+ switch (key) {
+ case SR_CONF_DEVICE_OPTIONS:
+ *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
+ devopts_cg_pwm, ARRAY_SIZE(devopts_cg_pwm),
+ sizeof(devopts_cg_pwm[0]));
+ break;
+ default:
+ return SR_ERR_NA;
+ }
+ return SR_OK;
+ }
+
switch (key) {
case SR_CONF_SCAN_OPTIONS:
case SR_CONF_DEVICE_OPTIONS:
- return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
+ return STD_CONFIG_LIST(key, data, sdi, cg,
+ scanopts, drvopts, devopts);
case SR_CONF_SAMPLERATE:
- *data = std_gvar_samplerates(ARRAY_AND_SIZE(samplerates));
+ if (!sdi)
+ return SR_ERR_ARG;
+ if (devc->model->samplerate == SR_MHZ(500))
+ *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_500mhz));
+ else if (devc->model->samplerate == SR_MHZ(200))
+ *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_200mhz));
+ else if (devc->model->samplerate == SR_MHZ(100))
+ *data = std_gvar_samplerates(ARRAY_AND_SIZE(rates_100mhz));
+ else
+ return SR_ERR_BUG;
break;
case SR_CONF_LIMIT_SAMPLES:
- *data = std_gvar_tuple_u64(LA2016_NUM_SAMPLES_MIN, LA2016_NUM_SAMPLES_MAX);
+ *data = std_gvar_tuple_u64(0, LA2016_NUM_SAMPLES_MAX);
break;
+#if WITH_THRESHOLD_DEVCFG
case SR_CONF_VOLTAGE_THRESHOLD:
- *data = std_gvar_min_max_step_thresholds(
- LA2016_THR_VOLTAGE_MIN,
- LA2016_THR_VOLTAGE_MAX, 0.1);
+ *data = std_gvar_thresholds(ARRAY_AND_SIZE(threshold_ranges));
break;
+#endif /* WITH_THRESHOLD_DEVCFG */
case SR_CONF_TRIGGER_MATCH:
*data = std_gvar_array_i32(ARRAY_AND_SIZE(trigger_matches));
break;
- case SR_CONF_LOGIC_THRESHOLD:
- *data = g_variant_new_strv(logic_threshold, MAX_NUM_LOGIC_THRESHOLD_ENTRIES);
- break;
default:
return SR_ERR_NA;
}
return SR_OK;
}
-static void send_chunk(struct sr_dev_inst *sdi, transfer_packet_t *packets, unsigned int num_tfers)
-{
- struct dev_context *devc;
- struct sr_datafeed_logic logic;
- struct sr_datafeed_packet sr_packet;
- transfer_packet_t *packet;
- acq_packet_t *p;
- unsigned int max_samples, n_samples, total_samples, free_n_samples, ptotal;
- unsigned int i, j, k;
- int do_signal_trigger;
- uint16_t *wp;
-
- devc = sdi->priv;
-
- logic.unitsize = 2;
- logic.data = devc->convbuffer;
-
- sr_packet.type = SR_DF_LOGIC;
- sr_packet.payload = &logic;
-
- max_samples = devc->convbuffer_size / 2;
- n_samples = 0;
- wp = (uint16_t*)devc->convbuffer;
- total_samples = 0;
- do_signal_trigger = 0;
-
- if (devc->had_triggers_configured && devc->reading_behind_trigger == 0 && devc->info.n_rep_packets_before_trigger == 0) {
- sr_packet.type = SR_DF_TRIGGER;
- sr_packet.payload = NULL;
- sr_session_send(sdi, &sr_packet);
- devc->reading_behind_trigger = 1;
-
- do_signal_trigger = 0;
- sr_packet.type = SR_DF_LOGIC;
- sr_packet.payload = &logic;
- }
-
- for (i = 0; i < num_tfers; i++) {
- transfer_packet_host(packets[i]);
- packet = packets + i;
- ptotal = 0;
- for (k = 0; k < ARRAY_SIZE(packet->packet); k++) {
- free_n_samples = max_samples - n_samples;
- if (free_n_samples < 256 || do_signal_trigger) {
- logic.length = n_samples * 2;
- sr_session_send(sdi, &sr_packet);
- n_samples = 0;
- wp = (uint16_t*)devc->convbuffer;
- if (do_signal_trigger) {
- sr_packet.type = SR_DF_TRIGGER;
- sr_packet.payload = NULL;
- sr_session_send(sdi, &sr_packet);
-
- do_signal_trigger = 0;
- sr_packet.type = SR_DF_LOGIC;
- sr_packet.payload = &logic;
- }
- }
- p = packet->packet + k;
- for (j = 0; j < p->repetitions; j++)
- *(wp++) = p->state;
- n_samples += p->repetitions;
- total_samples += p->repetitions;
- ptotal += p->repetitions;
- devc->total_samples += p->repetitions;
- if (!devc->reading_behind_trigger) {
- devc->n_reps_until_trigger --;
- if (devc->n_reps_until_trigger == 0) {
- devc->reading_behind_trigger = 1;
- do_signal_trigger = 1;
- sr_dbg(" here is trigger position after %" PRIu64 " samples, %.6fms",
- devc->total_samples,
- (double)devc->total_samples / devc->cur_samplerate * 1e3);
- }
- }
- }
- }
- if (n_samples) {
- logic.length = n_samples * 2;
- sr_session_send(sdi, &sr_packet);
- if (do_signal_trigger) {
- sr_packet.type = SR_DF_TRIGGER;
- sr_packet.payload = NULL;
- sr_session_send(sdi, &sr_packet);
- }
- }
- sr_dbg("send_chunk done after %d samples", total_samples);
-}
-
-static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
-{
- struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct sr_usb_dev_inst *usb;
- int ret;
-
- sdi = transfer->user_data;
- devc = sdi->priv;
- usb = sdi->conn;
-
- sr_dbg("receive_transfer(): status %s received %d bytes.",
- libusb_error_name(transfer->status), transfer->actual_length);
-
- if (transfer->status == LIBUSB_TRANSFER_TIMED_OUT) {
- sr_err("bulk transfer timeout!");
- devc->transfer_finished = 1;
- }
- send_chunk(sdi, (transfer_packet_t*)transfer->buffer, transfer->actual_length / sizeof(transfer_packet_t));
-
- devc->n_bytes_to_read -= transfer->actual_length;
- if (devc->n_bytes_to_read) {
- uint32_t to_read = devc->n_bytes_to_read;
- if (to_read > LA2016_BULK_MAX)
- to_read = LA2016_BULK_MAX;
- libusb_fill_bulk_transfer(
- transfer, usb->devhdl,
- 0x86, transfer->buffer, to_read,
- receive_transfer, (void*)sdi, DEFAULT_TIMEOUT_MS);
-
- if ((ret = libusb_submit_transfer(transfer)) == 0)
- return;
- sr_err("Failed to submit further transfer: %s.", libusb_error_name(ret));
- }
-
- g_free(transfer->buffer);
- libusb_free_transfer(transfer);
- devc->transfer_finished = 1;
-}
-
-static int handle_event(int fd, int revents, void *cb_data)
-{
- const struct sr_dev_inst *sdi;
- struct dev_context *devc;
- struct drv_context *drvc;
- struct sr_datafeed_packet packet;
- struct timeval tv;
-
- (void)fd;
- (void)revents;
-
- sdi = cb_data;
- devc = sdi->priv;
- drvc = sdi->driver->context;
-
- if (devc->have_trigger == 0) {
- if (la2016_has_triggered(sdi) == 0) {
- sr_dbg("not yet ready for download...");
- return TRUE;
- }
- devc->have_trigger = 1;
- devc->transfer_finished = 0;
- devc->reading_behind_trigger = 0;
- devc->total_samples = 0;
- /* we can start retrieving data! */
- if (la2016_start_retrieval(sdi, receive_transfer) != SR_OK) {
- sr_err("failed to start retrieval!");
- return FALSE;
- }
- sr_dbg("retrieval is started...");
- packet.type = SR_DF_FRAME_BEGIN;
- sr_session_send(sdi, &packet);
-
- return TRUE;
- }
-
- tv.tv_sec = tv.tv_usec = 0;
- libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv);
-
- if (devc->transfer_finished) {
- sr_dbg("transfer is finished!");
- packet.type = SR_DF_FRAME_END;
- sr_session_send(sdi, &packet);
-
- usb_source_remove(sdi->session, drvc->sr_ctx);
- std_session_send_df_end(sdi);
-
- la2016_stop_acquisition(sdi);
-
- g_free(devc->convbuffer);
- devc->convbuffer = NULL;
-
- sr_dbg("transfer is now finished");
- }
-
- return TRUE;
-}
-
-static void abort_acquisition(struct dev_context *devc)
-{
- if (devc->transfer)
- libusb_cancel_transfer(devc->transfer);
-}
-
-static int configure_channels(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
-
- devc = sdi->priv;
- devc->cur_channels = 0;
- devc->num_channels = 0;
-
- for (GSList *l = sdi->channels; l; l = l->next) {
- struct sr_channel *ch = (struct sr_channel*)l->data;
- if (ch->enabled == FALSE)
- continue;
- devc->cur_channels |= 1 << (ch->index);
- devc->num_channels++;
- }
-
- return SR_OK;
-}
-
static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
struct sr_dev_driver *di;
struct drv_context *drvc;
+ struct sr_context *ctx;
struct dev_context *devc;
+ size_t unitsize, xfersize, repsize, seqsize;
+ double voltage;
int ret;
di = sdi->driver;
drvc = di->context;
+ ctx = drvc->sr_ctx;;
devc = sdi->priv;
- if (configure_channels(sdi) != SR_OK) {
- sr_err("Failed to configure channels.");
- return SR_ERR;
+ if (!devc->feed_queue) {
+ /*
+ * TODO
+ * Move this into protocol.c which concentrates the
+ * wire format. The api.c source should not bother.
+ */
+ if (devc->model->channel_count == 32) {
+ unitsize = sizeof(uint32_t);
+ repsize = sizeof(uint8_t);
+ seqsize = 2 * sizeof(uint8_t);
+ xfersize = 32;
+ } else if (devc->model->channel_count == 16) {
+ unitsize = sizeof(uint16_t);
+ repsize = sizeof(uint8_t);
+ seqsize = 1 * sizeof(uint8_t);
+ xfersize = 16;
+ } else {
+ return SR_ERR_ARG;
+ }
+ devc->feed_queue = feed_queue_logic_alloc(sdi,
+ LA2016_CONVBUFFER_SIZE, unitsize);
+ if (!devc->feed_queue) {
+ sr_err("Cannot allocate buffer for session feed.");
+ return SR_ERR_MALLOC;
+ }
+ devc->transfer_size = xfersize;
+ devc->sequence_size = seqsize;
+ devc->packets_per_chunk = xfersize;
+ devc->packets_per_chunk -= seqsize;
+ devc->packets_per_chunk /= unitsize + repsize;
}
- devc->convbuffer_size = 4 * 1024 * 1024;
- if (!(devc->convbuffer = g_try_malloc(devc->convbuffer_size))) {
- sr_err("Conversion buffer malloc failed.");
- return SR_ERR_MALLOC;
- }
+ sr_sw_limits_acquisition_start(&devc->sw_limits);
- if ((ret = la2016_setup_acquisition(sdi)) != SR_OK) {
- g_free(devc->convbuffer);
- devc->convbuffer = NULL;
+ voltage = threshold_voltage(sdi, NULL);
+ ret = la2016_setup_acquisition(sdi, voltage);
+ if (ret != SR_OK) {
+ feed_queue_logic_free(devc->feed_queue);
+ devc->feed_queue = NULL;
return ret;
}
- devc->ctx = drvc->sr_ctx;
-
- if ((ret = la2016_start_acquisition(sdi)) != SR_OK) {
- abort_acquisition(devc);
+ ret = la2016_start_acquisition(sdi);
+ if (ret != SR_OK) {
+ la2016_abort_acquisition(sdi);
+ feed_queue_logic_free(devc->feed_queue);
+ devc->feed_queue = NULL;
return ret;
}
- devc->have_trigger = 0;
- usb_source_add(sdi->session, drvc->sr_ctx, 50, handle_event, (void*)sdi);
+ devc->completion_seen = FALSE;
+ usb_source_add(sdi->session, ctx, 50,
+ la2016_receive_data, (void *)sdi);
std_session_send_df_header(sdi);
int ret;
ret = la2016_abort_acquisition(sdi);
- abort_acquisition(sdi->priv);
return ret;
}
projects / libsigrok.git / blobdiff