*/
#include "protocol.h"
+#include "libsigrok.h"
+#include "libsigrok-internal.h"
+#include <glib.h>
+#include <libusb.h>
+#include <stdlib.h>
+#include <string.h>
+
+static const int32_t hwcaps[] = {
+ SR_CONF_LOGIC_ANALYZER,
+ SR_CONF_SAMPLERATE,
+ SR_CONF_EXTERNAL_CLOCK,
+ SR_CONF_TRIGGER_TYPE,
+ SR_CONF_LIMIT_SAMPLES,
+};
+
+/* The hardware supports more samplerates than these, but these are the
+ * options hardcoded into the vendor's Windows GUI.
+ */
+static const uint64_t samplerates[] = {
+ SR_MHZ(125), SR_MHZ(100),
+ SR_MHZ(50), SR_MHZ(20), SR_MHZ(10),
+ SR_MHZ(5), SR_MHZ(2), SR_MHZ(1),
+ SR_KHZ(500), SR_KHZ(200), SR_KHZ(100),
+ SR_KHZ(50), SR_KHZ(20), SR_KHZ(10),
+ SR_KHZ(5), SR_KHZ(2), SR_KHZ(1),
+ SR_HZ(500), SR_HZ(200), SR_HZ(100),
+};
SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info;
-static struct sr_dev_driver *di = &sysclk_lwla_driver_info;
+static struct sr_dev_driver *const di = &sysclk_lwla_driver_info;
static int init(struct sr_context *sr_ctx)
{
return std_init(sr_ctx, di, LOG_PREFIX);
}
+static GSList *gen_probe_list(int num_probes)
+{
+ GSList *list;
+ struct sr_probe *probe;
+ int i;
+ char name[8];
+
+ list = NULL;
+
+ for (i = num_probes; i > 0; --i) {
+ /* The LWLA series simply number probes from CH1 to CHxx. */
+ g_ascii_formatd(name, sizeof name, "CH%.0f", i);
+
+ probe = sr_probe_new(i - 1, SR_PROBE_LOGIC, TRUE, name);
+ list = g_slist_prepend(list, probe);
+ }
+
+ return list;
+}
+
static GSList *scan(GSList *options)
{
+ GSList *usb_devices, *devices, *node;
struct drv_context *drvc;
- GSList *devices;
+ struct sr_dev_inst *sdi;
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int device_index;
(void)options;
devices = NULL;
drvc = di->priv;
drvc->instances = NULL;
+ device_index = 0;
+
+ usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, USB_VID_PID);
+
+ for (node = usb_devices; node != NULL; node = node->next) {
+ usb = node->data;
+
+ /* Allocate memory for our private driver context. */
+ devc = g_try_new0(struct dev_context, 1);
+ if (!devc) {
+ sr_err("Device context malloc failed.");
+ sr_usb_dev_inst_free(usb);
+ continue;
+ }
+ /* Register the device with libsigrok. */
+ sdi = sr_dev_inst_new(device_index, SR_ST_INACTIVE,
+ VENDOR_NAME, MODEL_NAME, NULL);
+ if (!sdi) {
+ sr_err("Failed to instantiate device.");
+ g_free(devc);
+ sr_usb_dev_inst_free(usb);
+ continue;
+ }
+ sdi->driver = di;
+ sdi->priv = devc;
+ sdi->inst_type = SR_INST_USB;
+ sdi->conn = usb;
+ sdi->probes = gen_probe_list(NUM_PROBES);
+
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
+ }
- /* TODO: scan for devices, either based on a SR_CONF_CONN option
- * or on a USB scan. */
+ g_slist_free(usb_devices);
return devices;
}
static GSList *dev_list(void)
{
- return ((struct drv_context *)(di->priv))->instances;
+ struct drv_context *drvc;
+
+ drvc = di->priv;
+
+ return drvc->instances;
+}
+
+static void clear_dev_context(void *priv)
+{
+ struct dev_context *devc;
+
+ devc = priv;
+
+ sr_dbg("Device context cleared.");
+
+ lwla_free_acquisition_state(devc->acquisition);
+ g_free(devc);
}
static int dev_clear(void)
{
- return std_dev_clear(di, NULL);
+ return std_dev_clear(di, &clear_dev_context);
}
static int dev_open(struct sr_dev_inst *sdi)
{
- (void)sdi;
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ struct sr_usb_dev_inst *usb;
+ int ret;
- /* TODO: get handle from sdi->conn and open it. */
+ drvc = di->priv;
- sdi->status = SR_ST_ACTIVE;
+ if (!drvc) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
- return SR_OK;
+ usb = sdi->conn;
+ devc = sdi->priv;
+
+ ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
+ if (ret != SR_OK)
+ return ret;
+
+ ret = libusb_claim_interface(usb->devhdl, USB_INTERFACE);
+ if (ret < 0) {
+ sr_err("Failed to claim interface: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+
+ sdi->status = SR_ST_INITIALIZING;
+
+ if (devc->samplerate == 0)
+ /* Apply default if the samplerate hasn't been set yet. */
+ devc->samplerate = DEFAULT_SAMPLERATE;
+
+ ret = lwla_init_device(sdi);
+
+ if (ret == SR_OK)
+ sdi->status = SR_ST_ACTIVE;
+
+ return ret;
}
static int dev_close(struct sr_dev_inst *sdi)
{
- (void)sdi;
+ struct sr_usb_dev_inst *usb;
+ struct dev_context *devc;
+
+ if (!di->priv) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
+
+ usb = sdi->conn;
+ devc = sdi->priv;
- /* TODO: get handle from sdi->conn and close it. */
+ if (!usb->devhdl)
+ return SR_OK;
+ /* Trigger download of the shutdown bitstream. */
+ devc->selected_clock_source = CLOCK_SOURCE_NONE;
+
+ if (lwla_set_clock_source(sdi) != SR_OK)
+ sr_err("Unable to shut down device.");
+
+ 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();
-
- /* TODO: free other driver resources, if any. */
-
- return SR_OK;
+ return dev_clear();
}
static int config_get(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_probe_group *probe_group)
+ const struct sr_probe_group *probe_group)
{
- int ret;
+ struct dev_context *devc;
- (void)sdi;
- (void)data;
(void)probe_group;
- ret = SR_OK;
+ if (!sdi)
+ return SR_ERR_ARG;
+
+ devc = sdi->priv;
+
switch (key) {
- /* TODO */
+ case SR_CONF_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_EXTERNAL_CLOCK:
+ *data = g_variant_new_boolean(devc->selected_clock_source
+ >= CLOCK_SOURCE_EXT_RISE);
+ break;
default:
return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
- const struct sr_probe_group *probe_group)
+ const struct sr_probe_group *probe_group)
{
- int ret;
+ struct dev_context *devc;
+ uint64_t rate;
- (void)data;
(void)probe_group;
- if (sdi->status != SR_ST_ACTIVE)
+ devc = sdi->priv;
+ if (!devc)
return SR_ERR_DEV_CLOSED;
- ret = SR_OK;
switch (key) {
- /* TODO */
+ case SR_CONF_SAMPLERATE:
+ rate = g_variant_get_uint64(data);
+ sr_info("Setting samplerate %" G_GUINT64_FORMAT, rate);
+ if (rate > samplerates[0]
+ || rate < samplerates[G_N_ELEMENTS(samplerates) - 1])
+ return SR_ERR_SAMPLERATE;
+ devc->samplerate = rate;
+ break;
+ case SR_CONF_LIMIT_SAMPLES:
+ devc->limit_samples = g_variant_get_uint64(data);
+ break;
+ case SR_CONF_EXTERNAL_CLOCK:
+ if (g_variant_get_boolean(data)) {
+ sr_info("Enabling external clock.");
+ /* TODO: Allow the external clock to be inverted */
+ devc->selected_clock_source = CLOCK_SOURCE_EXT_RISE;
+ } else {
+ sr_info("Disabling external clock.");
+ devc->selected_clock_source = CLOCK_SOURCE_INT;
+ }
+ if (sdi->status == SR_ST_ACTIVE)
+ return lwla_set_clock_source(sdi);
+ break;
default:
- ret = SR_ERR_NA;
+ return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
- const struct sr_probe_group *probe_group)
+ const struct sr_probe_group *probe_group)
{
- int ret;
+ GVariant *gvar;
+ GVariantBuilder gvb;
(void)sdi;
- (void)data;
(void)probe_group;
- ret = SR_OK;
switch (key) {
- /* TODO */
+ 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_TRIGGER_TYPE:
+ *data = g_variant_new_string(TRIGGER_TYPES);
+ break;
default:
return SR_ERR_NA;
}
- return ret;
+ return SR_OK;
}
-static int dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int configure_probes(const struct sr_dev_inst *sdi)
{
- (void)sdi;
+ struct dev_context *devc;
+ const struct sr_probe *probe;
+ const GSList *node;
+ uint64_t probe_bit;
+
+ devc = sdi->priv;
+
+ devc->channel_mask = 0;
+ devc->trigger_mask = 0;
+ devc->trigger_edge_mask = 0;
+ devc->trigger_values = 0;
+
+ for (node = sdi->probes, probe_bit = 1;
+ node != NULL;
+ node = node->next, probe_bit <<= 1) {
+
+ if (probe_bit >= ((uint64_t)1 << NUM_PROBES)) {
+ sr_err("Channels over the limit of %d.", NUM_PROBES);
+ return SR_ERR;
+ }
+ probe = node->data;
+ if (!probe || !probe->enabled)
+ continue;
+
+ /* Enable input channel for this probe. */
+ devc->channel_mask |= probe_bit;
+
+ if (!probe->trigger || probe->trigger[0] == '\0')
+ continue;
+
+ if (probe->trigger[1] != '\0') {
+ sr_err("Only one trigger stage is supported.");
+ return SR_ERR;
+ }
+ /* Enable trigger for this probe. */
+ devc->trigger_mask |= probe_bit;
+
+ /* Configure edge mask and trigger value. */
+ switch (probe->trigger[0]) {
+ case '1': devc->trigger_values |= probe_bit;
+ case '0': break;
+
+ case 'r': devc->trigger_values |= probe_bit;
+ case 'f': devc->trigger_edge_mask |= probe_bit;
+ break;
+ default:
+ sr_err("Trigger type '%c' is not supported.",
+ probe->trigger[0]);
+ return SR_ERR;
+ }
+ }
+ return SR_OK;
+}
+
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
+{
+ struct drv_context *drvc;
+ struct dev_context *devc;
+ struct acquisition_state *acq;
+ int ret;
+
(void)cb_data;
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- /* TODO: configure hardware, reset acquisition state, set up
- * callbacks and send header packet. */
+ devc = sdi->priv;
+ drvc = di->priv;
+
+ if (devc->acquisition) {
+ sr_err("Acquisition still in progress?");
+ return SR_ERR;
+ }
+ acq = lwla_alloc_acquisition_state();
+ if (!acq)
+ return SR_ERR_MALLOC;
+
+ devc->stopping_in_progress = FALSE;
+ devc->transfer_error = FALSE;
+
+ ret = configure_probes(sdi);
+ if (ret != SR_OK) {
+ sr_err("Failed to configure probes.");
+ lwla_free_acquisition_state(acq);
+ return ret;
+ }
+
+ sr_info("Starting acquisition.");
+
+ devc->acquisition = acq;
+ ret = lwla_setup_acquisition(sdi);
+ if (ret != SR_OK) {
+ sr_err("Failed to set up aquisition.");
+ devc->acquisition = NULL;
+ lwla_free_acquisition_state(acq);
+ return ret;
+ }
+
+ ret = lwla_start_acquisition(sdi);
+ if (ret != SR_OK) {
+ sr_err("Failed to start aquisition.");
+ devc->acquisition = NULL;
+ lwla_free_acquisition_state(acq);
+ return ret;
+ }
+ usb_source_add(drvc->sr_ctx, 100, &lwla_receive_data,
+ (struct sr_dev_inst *)sdi);
+
+ sr_info("Waiting for data.");
+
+ /* Send header packet to the session bus. */
+ std_session_send_df_header(sdi, LOG_PREFIX);
return SR_OK;
}
if (sdi->status != SR_ST_ACTIVE)
return SR_ERR_DEV_CLOSED;
- /* TODO: stop acquisition. */
+ sr_dbg("Stopping acquisition.");
+
+ sdi->status = SR_ST_STOPPING;
return SR_OK;
}
SR_PRIV struct sr_dev_driver sysclk_lwla_driver_info = {
.name = "sysclk-lwla",
- .longname = "SysClk LWLA",
+ .longname = "SysClk LWLA series",
.api_version = 1,
.init = init,
.cleanup = cleanup,
projects / libsigrok.git / blobdiff