*/
#include <glib.h>
+#include <libusb.h>
+#include <stdlib.h>
+#include <string.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
+#define VICTOR_VID 0x1244
+#define VICTOR_PID 0xd237
+#define VICTOR_VENDOR "Victor"
+#define VICTOR_INTERFACE 0
+#define VICTOR_ENDPOINT LIBUSB_ENDPOINT_IN | 1
+
SR_PRIV struct sr_dev_driver victor_dmm_driver_info;
static struct sr_dev_driver *di = &victor_dmm_driver_info;
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data);
+
+static const int32_t hwopts[] = {
+ SR_CONF_CONN,
+};
-/* Properly close and free all devices. */
-static int clear_instances(void)
+static const int32_t hwcaps[] = {
+ SR_CONF_MULTIMETER,
+ SR_CONF_LIMIT_MSEC,
+ SR_CONF_LIMIT_SAMPLES,
+ SR_CONF_CONTINUOUS,
+};
+
+static int init(struct sr_context *sr_ctx)
+{
+ return std_init(sr_ctx, di, LOG_PREFIX);
+}
+
+static GSList *scan(GSList *options)
{
- struct sr_dev_inst *sdi;
struct drv_context *drvc;
struct dev_context *devc;
- GSList *l;
+ struct sr_dev_inst *sdi;
+ struct sr_probe *probe;
+ struct libusb_device_descriptor des;
+ libusb_device **devlist;
+ GSList *devices;
+ int ret, devcnt, i;
+
+ (void)options;
drvc = di->priv;
- for (l = drvc->instances; l; l = l->next) {
- if (!(sdi = l->data))
+
+ devices = NULL;
+ libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+ for (i = 0; devlist[i]; i++) {
+ if ((ret = libusb_get_device_descriptor(devlist[i], &des)) != 0) {
+ sr_warn("Failed to get device descriptor: %s",
+ libusb_error_name(ret));
continue;
- if (!(devc = sdi->priv))
+ }
+
+ if (des.idVendor != VICTOR_VID || des.idProduct != VICTOR_PID)
continue;
- /* TODO */
+ devcnt = g_slist_length(drvc->instances);
+ if (!(sdi = sr_dev_inst_new(devcnt, SR_ST_INACTIVE,
+ VICTOR_VENDOR, NULL, NULL)))
+ return NULL;
+ sdi->driver = di;
+
+ if (!(devc = g_try_malloc0(sizeof(struct dev_context))))
+ return NULL;
+ sdi->priv = devc;
+
+ if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
+ return NULL;
+ sdi->probes = g_slist_append(NULL, probe);
- sr_dev_inst_free(sdi);
+ if (!(sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
+ libusb_get_device_address(devlist[i]), NULL)))
+ return NULL;
+ sdi->inst_type = SR_INST_USB;
+
+ drvc->instances = g_slist_append(drvc->instances, sdi);
+ devices = g_slist_append(devices, sdi);
}
+ libusb_free_device_list(devlist, 1);
- g_slist_free(drvc->instances);
- drvc->instances = NULL;
+ return devices;
+}
- return SR_OK;
+static GSList *dev_list(void)
+{
+ return ((struct drv_context *)(di->priv))->instances;
}
-static int hw_init(void)
+static int dev_open(struct sr_dev_inst *sdi)
{
- struct drv_context *drvc;
+ struct drv_context *drvc = di->priv;
+ struct sr_usb_dev_inst *usb;
+ libusb_device **devlist;
+ int ret, i;
- if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
- sr_err("Driver context malloc failed.");
- return SR_ERR_MALLOC;
+ if (!di->priv) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
+
+ usb = sdi->conn;
+
+ libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
+ for (i = 0; devlist[i]; i++) {
+ if (libusb_get_bus_number(devlist[i]) != usb->bus
+ || libusb_get_device_address(devlist[i]) != usb->address)
+ continue;
+ if ((ret = libusb_open(devlist[i], &usb->devhdl))) {
+ sr_err("Failed to open device: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ break;
+ }
+ libusb_free_device_list(devlist, 1);
+ if (!devlist[i]) {
+ sr_err("Device not found.");
+ return SR_ERR;
}
- /* TODO */
+ /* The device reports as HID class, so the kernel would have
+ * claimed it. */
+ if (libusb_kernel_driver_active(usb->devhdl, 0) == 1) {
+ if ((ret = libusb_detach_kernel_driver(usb->devhdl, 0)) < 0) {
+ sr_err("Failed to detach kernel driver: %s.",
+ libusb_error_name(ret));
+ return SR_ERR;
+ }
+ }
- di->priv = drvc;
+ if ((ret = libusb_claim_interface(usb->devhdl,
+ VICTOR_INTERFACE))) {
+ sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
+ return SR_ERR;
+ }
+ sdi->status = SR_ST_ACTIVE;
return SR_OK;
}
-static GSList *hw_scan(GSList *options)
+static int dev_close(struct sr_dev_inst *sdi)
{
- struct drv_context *drvc;
- GSList *devices;
+ struct sr_usb_dev_inst *usb;
- (void)options;
+ if (!di->priv) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
- devices = NULL;
- drvc = di->priv;
- drvc->instances = NULL;
+ usb = sdi->conn;
- /* TODO */
+ if (!usb->devhdl)
+ /* Nothing to do. */
+ return SR_OK;
- return devices;
+ libusb_release_interface(usb->devhdl, VICTOR_INTERFACE);
+ libusb_close(usb->devhdl);
+ usb->devhdl = NULL;
+ sdi->status = SR_ST_INACTIVE;
+
+ return SR_OK;
}
-static GSList *hw_dev_list(void)
+static int cleanup(void)
{
+ int ret;
struct drv_context *drvc;
- drvc = di->priv;
+ if (!(drvc = di->priv))
+ /* Can get called on an unused driver, doesn't matter. */
+ return SR_OK;
- return drvc->instances;
-}
-static int hw_dev_open(struct sr_dev_inst *sdi)
-{
- /* TODO */
+ ret = std_dev_clear(di, NULL);
+ g_free(drvc);
+ di->priv = NULL;
- return SR_OK;
+ return ret;
}
-static int hw_dev_close(struct sr_dev_inst *sdi)
+static int config_get(int id, GVariant **data, const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *channel_group)
{
- /* TODO */
+ struct sr_usb_dev_inst *usb;
+ char str[128];
+
+ (void)channel_group;
+
+ switch (id) {
+ case SR_CONF_CONN:
+ if (!sdi || !sdi->conn)
+ return SR_ERR_ARG;
+ usb = sdi->conn;
+ snprintf(str, 128, "%d.%d", usb->bus, usb->address);
+ *data = g_variant_new_string(str);
+ break;
+ default:
+ return SR_ERR_NA;
+ }
return SR_OK;
}
-static int hw_cleanup(void)
+static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi,
+ const struct sr_channel_group *channel_group)
{
- clear_instances();
+ struct dev_context *devc;
+ gint64 now;
+ int ret;
- /* TODO */
+ (void)channel_group;
- return SR_OK;
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
+ if (!di->priv) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
+
+ devc = sdi->priv;
+ ret = SR_OK;
+ switch (id) {
+ case SR_CONF_LIMIT_MSEC:
+ devc->limit_msec = g_variant_get_uint64(data);
+ now = g_get_monotonic_time() / 1000;
+ devc->end_time = now + devc->limit_msec;
+ sr_dbg("Setting time limit to %" PRIu64 "ms.",
+ devc->limit_msec);
+ break;
+ case SR_CONF_LIMIT_SAMPLES:
+ devc->limit_samples = g_variant_get_uint64(data);
+ sr_dbg("Setting sample limit to %" PRIu64 ".",
+ devc->limit_samples);
+ break;
+ default:
+ ret = SR_ERR_NA;
+ }
+
+ return ret;
}
-static int hw_info_get(int info_id, const void **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 *channel_group)
{
- switch (info_id) {
- /* TODO */
+ (void)sdi;
+ (void)channel_group;
+
+ switch (key) {
+ 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;
default:
- sr_err("Unknown info_id: %d.", info_id);
- return SR_ERR_ARG;
+ return SR_ERR_NA;
}
return SR_OK;
}
-static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
- const void *value)
+static void receive_transfer(struct libusb_transfer *transfer)
{
+ struct dev_context *devc;
+ struct sr_dev_inst *sdi;
int ret;
- if (sdi->status != SR_ST_ACTIVE) {
- sr_err("Device inactive, can't set config options.");
- return SR_ERR;
+ sdi = transfer->user_data;
+ devc = sdi->priv;
+ if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
+ /* USB device was unplugged. */
+ dev_acquisition_stop(sdi, sdi);
+ } else if (transfer->status == LIBUSB_TRANSFER_COMPLETED) {
+ sr_dbg("Got %d-byte packet.", transfer->actual_length);
+ if (transfer->actual_length == DMM_DATA_SIZE) {
+ victor_dmm_receive_data(sdi, transfer->buffer);
+ if (devc->limit_samples) {
+ if (devc->num_samples >= devc->limit_samples)
+ dev_acquisition_stop(sdi, sdi);
+ }
+ }
+ }
+ /* Anything else is either an error or a timeout, which is fine:
+ * we were just going to send another transfer request anyway. */
+
+ if (sdi->status == SR_ST_ACTIVE) {
+ /* Send the same request again. */
+ if ((ret = libusb_submit_transfer(transfer) != 0)) {
+ sr_err("Unable to resubmit transfer: %s.",
+ libusb_error_name(ret));
+ g_free(transfer->buffer);
+ libusb_free_transfer(transfer);
+ dev_acquisition_stop(sdi, sdi);
+ }
+ } else {
+ /* This was the last transfer we're going to receive, so
+ * clean up now. */
+ g_free(transfer->buffer);
+ libusb_free_transfer(transfer);
}
+}
- ret = SR_OK;
- switch (hwcap) {
- /* TODO */
- default:
- sr_err("Unknown hardware capability: %d.", hwcap);
- ret = SR_ERR_ARG;
+static int handle_events(int fd, int revents, void *cb_data)
+{
+ struct dev_context *devc;
+ struct drv_context *drvc = di->priv;
+ struct sr_datafeed_packet packet;
+ struct sr_dev_inst *sdi;
+ struct timeval tv;
+ gint64 now;
+
+ (void)fd;
+ (void)revents;
+
+ sdi = cb_data;
+ devc = sdi->priv;
+
+ if (devc->limit_msec) {
+ now = g_get_monotonic_time() / 1000;
+ if (now > devc->end_time)
+ dev_acquisition_stop(sdi, sdi);
}
- return ret;
+ if (sdi->status == SR_ST_STOPPING) {
+ usb_source_remove(drvc->sr_ctx);
+
+ dev_close(sdi);
+
+ packet.type = SR_DF_END;
+ sr_session_send(cb_data, &packet);
+ }
+
+ memset(&tv, 0, sizeof(struct timeval));
+ libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
+ NULL);
+
+ return TRUE;
}
-static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
- /* TODO */
+ struct dev_context *devc;
+ struct drv_context *drvc = di->priv;
+ struct sr_usb_dev_inst *usb;
+ struct libusb_transfer *transfer;
+ int ret;
+ unsigned char *buf;
+
+ if (sdi->status != SR_ST_ACTIVE)
+ return SR_ERR_DEV_CLOSED;
+
+ if (!di->priv) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
+
+ devc = sdi->priv;
+ usb = sdi->conn;
+ devc->cb_data = cb_data;
+
+ /* Send header packet to the session bus. */
+ std_session_send_df_header(cb_data, LOG_PREFIX);
+
+ usb_source_add(drvc->sr_ctx, 100, handle_events, (void *)sdi);
+
+ buf = g_try_malloc(DMM_DATA_SIZE);
+ transfer = libusb_alloc_transfer(0);
+ /* Each transfer request gets 100ms to arrive before it's restarted.
+ * The device only sends 1 transfer/second no matter how many
+ * times you ask, but we want to keep step with the USB events
+ * handling above. */
+ libusb_fill_interrupt_transfer(transfer, usb->devhdl,
+ VICTOR_ENDPOINT, buf, DMM_DATA_SIZE, receive_transfer,
+ cb_data, 100);
+ if ((ret = libusb_submit_transfer(transfer) != 0)) {
+ sr_err("Unable to submit transfer: %s.", libusb_error_name(ret));
+ libusb_free_transfer(transfer);
+ g_free(buf);
+ return SR_ERR;
+ }
return SR_OK;
}
-static int hw_dev_acquisition_stop(const struct sr_dev_inst *sdi,
- void *cb_data)
+static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
(void)cb_data;
+ if (!di->priv) {
+ sr_err("Driver was not initialized.");
+ return SR_ERR;
+ }
+
if (sdi->status != SR_ST_ACTIVE) {
- sr_err("Device inactive, can't stop acquisition.");
+ sr_err("Device not active, can't stop acquisition.");
return SR_ERR;
}
- /* TODO */
+ sdi->status = SR_ST_STOPPING;
return SR_OK;
}
SR_PRIV struct sr_dev_driver victor_dmm_driver_info = {
.name = "victor-dmm",
- .longname = "victor-dmm",
+ .longname = "Victor DMMs",
.api_version = 1,
- .init = hw_init,
- .cleanup = hw_cleanup,
- .scan = hw_scan,
- .dev_list = hw_dev_list,
- .dev_clear = clear_instances,
- .dev_open = hw_dev_open,
- .dev_close = hw_dev_close,
- .info_get = hw_info_get,
- .dev_config_set = hw_dev_config_set,
- .dev_acquisition_start = hw_dev_acquisition_start,
- .dev_acquisition_stop = hw_dev_acquisition_stop,
+ .init = init,
+ .cleanup = cleanup,
+ .scan = scan,
+ .dev_list = dev_list,
+ .dev_clear = NULL,
+ .config_get = config_get,
+ .config_set = config_set,
+ .config_list = config_list,
+ .dev_open = dev_open,
+ .dev_close = dev_close,
+ .dev_acquisition_start = dev_acquisition_start,
+ .dev_acquisition_stop = dev_acquisition_stop,
.priv = NULL,
};
projects / libsigrok.git / blobdiff