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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2010 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include "config.h" | |
21 | #include <stdint.h> | |
22 | #include <glib.h> | |
23 | #ifdef HAVE_LIBUSB_1_0 | |
24 | #include <libusb.h> | |
25 | #endif | |
26 | #include <sigrok.h> | |
27 | #include <sigrok-internal.h> | |
28 | ||
29 | #ifdef HAVE_LIBUSB_1_0 | |
30 | ||
31 | int opendev2(int device_index, struct sr_device_instance **sdi, | |
32 | libusb_device *dev, struct libusb_device_descriptor *des, | |
33 | int *skip, uint16_t vid, uint16_t pid, int interface) | |
34 | { | |
35 | int err; | |
36 | ||
37 | if ((err = libusb_get_device_descriptor(dev, des))) { | |
38 | sr_warn("failed to get device descriptor: %d", err); | |
39 | return -1; | |
40 | } | |
41 | ||
42 | if (des->idVendor != vid || des->idProduct != pid) | |
43 | return 0; | |
44 | ||
45 | if (*skip != device_index) { | |
46 | /* Skip devices of this type that aren't the one we want. */ | |
47 | *skip += 1; | |
48 | return 0; | |
49 | } | |
50 | ||
51 | /* | |
52 | * Should check the bus here, since we know that already. But what are | |
53 | * we going to do if it doesn't match after the right number of skips? | |
54 | */ | |
55 | if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) { | |
56 | (*sdi)->usb->address = libusb_get_device_address(dev); | |
57 | (*sdi)->status = SR_ST_ACTIVE; | |
58 | sr_info("opened device %d on %d.%d interface %d", | |
59 | (*sdi)->index, (*sdi)->usb->bus, | |
60 | (*sdi)->usb->address, interface); | |
61 | } else { | |
62 | sr_warn("failed to open device: %d", err); | |
63 | *sdi = NULL; | |
64 | } | |
65 | ||
66 | return 0; | |
67 | } | |
68 | ||
69 | int opendev3(struct sr_device_instance **sdi, libusb_device *dev, | |
70 | struct libusb_device_descriptor *des, | |
71 | uint16_t vid, uint16_t pid, int interface) | |
72 | { | |
73 | int err; | |
74 | ||
75 | if ((err = libusb_get_device_descriptor(dev, des))) { | |
76 | sr_warn("failed to get device descriptor: %d", err); | |
77 | return -1; | |
78 | } | |
79 | ||
80 | if (des->idVendor != vid || des->idProduct != pid) | |
81 | return 0; | |
82 | ||
83 | if (libusb_get_bus_number(dev) == (*sdi)->usb->bus | |
84 | && libusb_get_device_address(dev) == (*sdi)->usb->address) { | |
85 | /* Found it. */ | |
86 | if (!(err = libusb_open(dev, &((*sdi)->usb->devhdl)))) { | |
87 | (*sdi)->status = SR_ST_ACTIVE; | |
88 | sr_info("opened device %d on %d.%d interface %d", | |
89 | (*sdi)->index, (*sdi)->usb->bus, | |
90 | (*sdi)->usb->address, interface); | |
91 | } else { | |
92 | sr_warn("failed to open device: %d", err); | |
93 | *sdi = NULL; | |
94 | } | |
95 | } | |
96 | ||
97 | return 0; | |
98 | } | |
99 | ||
100 | #endif |