libsigrok/hardware/common/misc.c

100 lines
2.7 KiB
C

/*
* This file is part of the sigrok project.
*
* Copyright (C) 2010 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 <stdint.h>
#include <glib.h>
#ifdef HAVE_LIBUSB_1_0
#include <libusb.h>
#endif
#include <sigrok.h>
#ifdef HAVE_LIBUSB_1_0
int opendev2(int device_index, struct sr_device_instance **sdi,
libusb_device *dev, struct libusb_device_descriptor *des,
int *skip, uint16_t vid, uint16_t pid, int interface)
{
int err;
if ((err = libusb_get_device_descriptor(dev, des))) {
g_warning("failed to get device descriptor: %d", err);
return -1;
}
if (des->idVendor != vid || des->idProduct != pid)
return 0;
if (*skip != device_index) {
/* Skip devices of this type that aren't the one we want. */
*skip += 1;
return 0;
}
/*
* Should check the bus here, since we know that already. But what are
* we going to do if it doesn't match after the right number of skips?
*/
if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) {
(*sdi)->usb->address = libusb_get_device_address(dev);
(*sdi)->status = SR_ST_ACTIVE;
g_message("opened device %d on %d.%d interface %d",
(*sdi)->index, (*sdi)->usb->bus,
(*sdi)->usb->address, interface);
} else {
g_warning("failed to open device: %d", err);
*sdi = NULL;
}
return 0;
}
int opendev3(struct sr_device_instance **sdi, libusb_device *dev,
struct libusb_device_descriptor *des,
uint16_t vid, uint16_t pid, int interface)
{
int err;
if ((err = libusb_get_device_descriptor(dev, des))) {
g_warning("failed to get device descriptor: %d", err);
return -1;
}
if (des->idVendor != vid || des->idProduct != pid)
return 0;
if (libusb_get_bus_number(dev) == (*sdi)->usb->bus
&& libusb_get_device_address(dev) == (*sdi)->usb->address) {
/* Found it. */
if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) {
(*sdi)->status = SR_ST_ACTIVE;
g_message("opened device %d on %d.%d interface %d",
(*sdi)->index, (*sdi)->usb->bus,
(*sdi)->usb->address, interface);
} else {
g_warning("failed to open device: %d", err);
*sdi = NULL;
}
}
return 0;
}
#endif