+++ /dev/null
-/*
- * This file is part of the libsigrok project.
- *
- * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
- *
- * 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
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <config.h>
-#include <glib.h>
-#include <libusb.h>
-#include <stdlib.h>
-#include <string.h>
-#include <libsigrok/libsigrok.h>
-#include "libsigrok-internal.h"
-#include "protocol.h"
-
-#define VICTOR_VID 0x1244
-#define VICTOR_PID 0xd237
-#define VICTOR_INTERFACE 0
-#define VICTOR_ENDPOINT (LIBUSB_ENDPOINT_IN | 1)
-
-static const uint32_t scanopts[] = {
- SR_CONF_CONN,
-};
-
-static const uint32_t drvopts[] = {
- SR_CONF_MULTIMETER,
-};
-
-static const uint32_t devopts[] = {
- SR_CONF_CONTINUOUS,
- SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
- SR_CONF_LIMIT_MSEC | SR_CONF_SET,
- SR_CONF_CONN | SR_CONF_GET,
-};
-
-static GSList *scan(struct sr_dev_driver *di, GSList *options)
-{
- struct drv_context *drvc;
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- struct libusb_device_descriptor des;
- libusb_device **devlist;
- GSList *devices;
- int i;
- char connection_id[64];
-
- (void)options;
-
- drvc = di->context;
-
- devices = NULL;
- libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist);
- for (i = 0; devlist[i]; i++) {
- libusb_get_device_descriptor(devlist[i], &des);
-
- if (des.idVendor != VICTOR_VID || des.idProduct != VICTOR_PID)
- continue;
-
- if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0)
- continue;
-
- sdi = g_malloc0(sizeof(struct sr_dev_inst));
- sdi->status = SR_ST_INACTIVE;
- sdi->vendor = g_strdup("Victor");
- sdi->connection_id = g_strdup(connection_id);
- devc = g_malloc0(sizeof(struct dev_context));
- sr_sw_limits_init(&devc->limits);
- sdi->priv = devc;
-
- sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
- sdi->conn = sr_usb_dev_inst_new(libusb_get_bus_number(devlist[i]),
- libusb_get_device_address(devlist[i]), NULL);
- sdi->inst_type = SR_INST_USB;
-
- devices = g_slist_append(devices, sdi);
- }
- libusb_free_device_list(devlist, 1);
-
- return std_scan_complete(di, devices);
-}
-
-static int dev_open(struct sr_dev_inst *sdi)
-{
- struct sr_dev_driver *di = sdi->driver;
- struct drv_context *drvc = di->context;
- struct sr_usb_dev_inst *usb;
- int ret;
-
- usb = sdi->conn;
-
- ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
- if (ret != SR_OK)
- return ret;
-
- 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;
- }
- }
-
- if ((ret = libusb_claim_interface(usb->devhdl,
- VICTOR_INTERFACE))) {
- sr_err("Failed to claim interface: %s.", libusb_error_name(ret));
- return SR_ERR;
- }
-
- return SR_OK;
-}
-
-static int dev_close(struct sr_dev_inst *sdi)
-{
- struct sr_usb_dev_inst *usb;
-
- usb = sdi->conn;
-
- if (!usb->devhdl)
- return SR_ERR_BUG;
-
- libusb_release_interface(usb->devhdl, VICTOR_INTERFACE);
- libusb_close(usb->devhdl);
- usb->devhdl = NULL;
-
- return SR_OK;
-}
-
-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 = sdi->priv;
- struct sr_usb_dev_inst *usb;
-
- (void)cg;
-
- switch (key) {
- case SR_CONF_CONN:
- if (!sdi || !sdi->conn)
- return SR_ERR_ARG;
- usb = sdi->conn;
- *data = g_variant_new_printf("%d.%d", usb->bus, usb->address);
- break;
- case SR_CONF_LIMIT_SAMPLES:
- case SR_CONF_LIMIT_MSEC:
- return sr_sw_limits_config_get(&devc->limits, key, data);
- 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)
-{
- struct dev_context *devc;
-
- (void)cg;
-
- devc = sdi->priv;
-
- return sr_sw_limits_config_set(&devc->limits, key, data);
-}
-
-static int config_list(uint32_t key, GVariant **data,
- const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
-{
- return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
-}
-
-static void LIBUSB_CALL receive_transfer(struct libusb_transfer *transfer)
-{
- struct dev_context *devc;
- struct sr_dev_inst *sdi;
- int ret;
-
- sdi = transfer->user_data;
- devc = sdi->priv;
- if (transfer->status == LIBUSB_TRANSFER_NO_DEVICE) {
- /* USB device was unplugged. */
- sr_dev_acquisition_stop(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 (sr_sw_limits_check(&devc->limits))
- sr_dev_acquisition_stop(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);
- sr_dev_acquisition_stop(sdi);
- }
- } else {
- /* This was the last transfer we're going to receive, so
- * clean up now. */
- g_free(transfer->buffer);
- libusb_free_transfer(transfer);
- }
-}
-
-static int handle_events(int fd, int revents, void *cb_data)
-{
- struct dev_context *devc;
- struct drv_context *drvc;
- struct sr_dev_inst *sdi;
- struct sr_dev_driver *di;
- struct timeval tv;
-
- (void)fd;
- (void)revents;
-
- sdi = cb_data;
- devc = sdi->priv;
- di = sdi->driver;
- drvc = di->context;
-
- if (sr_sw_limits_check(&devc->limits))
- sr_dev_acquisition_stop(sdi);
-
- if (sdi->status == SR_ST_STOPPING) {
- usb_source_remove(sdi->session, drvc->sr_ctx);
- dev_close(sdi);
- std_session_send_df_end(sdi);
- }
-
- memset(&tv, 0, sizeof(struct timeval));
- libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv,
- NULL);
-
- return TRUE;
-}
-
-static int dev_acquisition_start(const struct sr_dev_inst *sdi)
-{
- struct sr_dev_driver *di = sdi->driver;
- struct drv_context *drvc = di->context;
- struct sr_usb_dev_inst *usb;
- struct libusb_transfer *transfer;
- int ret;
- unsigned char *buf;
-
- usb = sdi->conn;
-
- std_session_send_df_header(sdi);
-
- usb_source_add(sdi->session, drvc->sr_ctx, 100,
- handle_events, (void *)sdi);
-
- buf = g_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,
- (struct sr_dev_inst *)sdi, 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 dev_acquisition_stop(struct sr_dev_inst *sdi)
-{
- sdi->status = SR_ST_STOPPING;
-
- return SR_OK;
-}
-
-static struct sr_dev_driver victor_dmm_driver_info = {
- .name = "victor-dmm",
- .longname = "Victor DMMs",
- .api_version = 1,
- .init = std_init,
- .cleanup = std_cleanup,
- .scan = scan,
- .dev_list = std_dev_list,
- .dev_clear = std_dev_clear,
- .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,
- .context = NULL,
-};
-SR_REGISTER_DEV_DRIVER(victor_dmm_driver_info);
projects / libsigrok.git / blobdiff