1*86b64dcbSAndroid Build Coastguard Worker /*
2*86b64dcbSAndroid Build Coastguard Worker * libusb example program to list devices on the bus
3*86b64dcbSAndroid Build Coastguard Worker * Copyright © 2007 Daniel Drake <[email protected]>
4*86b64dcbSAndroid Build Coastguard Worker *
5*86b64dcbSAndroid Build Coastguard Worker * This library is free software; you can redistribute it and/or
6*86b64dcbSAndroid Build Coastguard Worker * modify it under the terms of the GNU Lesser General Public
7*86b64dcbSAndroid Build Coastguard Worker * License as published by the Free Software Foundation; either
8*86b64dcbSAndroid Build Coastguard Worker * version 2.1 of the License, or (at your option) any later version.
9*86b64dcbSAndroid Build Coastguard Worker *
10*86b64dcbSAndroid Build Coastguard Worker * This library is distributed in the hope that it will be useful,
11*86b64dcbSAndroid Build Coastguard Worker * but WITHOUT ANY WARRANTY; without even the implied warranty of
12*86b64dcbSAndroid Build Coastguard Worker * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13*86b64dcbSAndroid Build Coastguard Worker * Lesser General Public License for more details.
14*86b64dcbSAndroid Build Coastguard Worker *
15*86b64dcbSAndroid Build Coastguard Worker * You should have received a copy of the GNU Lesser General Public
16*86b64dcbSAndroid Build Coastguard Worker * License along with this library; if not, write to the Free Software
17*86b64dcbSAndroid Build Coastguard Worker * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18*86b64dcbSAndroid Build Coastguard Worker */
19*86b64dcbSAndroid Build Coastguard Worker
20*86b64dcbSAndroid Build Coastguard Worker #include <stdio.h>
21*86b64dcbSAndroid Build Coastguard Worker
22*86b64dcbSAndroid Build Coastguard Worker #include "libusb.h"
23*86b64dcbSAndroid Build Coastguard Worker
print_devs(libusb_device ** devs)24*86b64dcbSAndroid Build Coastguard Worker static void print_devs(libusb_device **devs)
25*86b64dcbSAndroid Build Coastguard Worker {
26*86b64dcbSAndroid Build Coastguard Worker libusb_device *dev;
27*86b64dcbSAndroid Build Coastguard Worker int i = 0, j = 0;
28*86b64dcbSAndroid Build Coastguard Worker uint8_t path[8];
29*86b64dcbSAndroid Build Coastguard Worker
30*86b64dcbSAndroid Build Coastguard Worker while ((dev = devs[i++]) != NULL) {
31*86b64dcbSAndroid Build Coastguard Worker struct libusb_device_descriptor desc;
32*86b64dcbSAndroid Build Coastguard Worker int r = libusb_get_device_descriptor(dev, &desc);
33*86b64dcbSAndroid Build Coastguard Worker if (r < 0) {
34*86b64dcbSAndroid Build Coastguard Worker fprintf(stderr, "failed to get device descriptor");
35*86b64dcbSAndroid Build Coastguard Worker return;
36*86b64dcbSAndroid Build Coastguard Worker }
37*86b64dcbSAndroid Build Coastguard Worker
38*86b64dcbSAndroid Build Coastguard Worker printf("%04x:%04x (bus %d, device %d)",
39*86b64dcbSAndroid Build Coastguard Worker desc.idVendor, desc.idProduct,
40*86b64dcbSAndroid Build Coastguard Worker libusb_get_bus_number(dev), libusb_get_device_address(dev));
41*86b64dcbSAndroid Build Coastguard Worker
42*86b64dcbSAndroid Build Coastguard Worker r = libusb_get_port_numbers(dev, path, sizeof(path));
43*86b64dcbSAndroid Build Coastguard Worker if (r > 0) {
44*86b64dcbSAndroid Build Coastguard Worker printf(" path: %d", path[0]);
45*86b64dcbSAndroid Build Coastguard Worker for (j = 1; j < r; j++)
46*86b64dcbSAndroid Build Coastguard Worker printf(".%d", path[j]);
47*86b64dcbSAndroid Build Coastguard Worker }
48*86b64dcbSAndroid Build Coastguard Worker printf("\n");
49*86b64dcbSAndroid Build Coastguard Worker }
50*86b64dcbSAndroid Build Coastguard Worker }
51*86b64dcbSAndroid Build Coastguard Worker
main(void)52*86b64dcbSAndroid Build Coastguard Worker int main(void)
53*86b64dcbSAndroid Build Coastguard Worker {
54*86b64dcbSAndroid Build Coastguard Worker libusb_device **devs;
55*86b64dcbSAndroid Build Coastguard Worker int r;
56*86b64dcbSAndroid Build Coastguard Worker ssize_t cnt;
57*86b64dcbSAndroid Build Coastguard Worker
58*86b64dcbSAndroid Build Coastguard Worker r = libusb_init_context(/*ctx=*/NULL, /*options=*/NULL, /*num_options=*/0);
59*86b64dcbSAndroid Build Coastguard Worker if (r < 0)
60*86b64dcbSAndroid Build Coastguard Worker return r;
61*86b64dcbSAndroid Build Coastguard Worker
62*86b64dcbSAndroid Build Coastguard Worker cnt = libusb_get_device_list(NULL, &devs);
63*86b64dcbSAndroid Build Coastguard Worker if (cnt < 0){
64*86b64dcbSAndroid Build Coastguard Worker libusb_exit(NULL);
65*86b64dcbSAndroid Build Coastguard Worker return (int) cnt;
66*86b64dcbSAndroid Build Coastguard Worker }
67*86b64dcbSAndroid Build Coastguard Worker
68*86b64dcbSAndroid Build Coastguard Worker print_devs(devs);
69*86b64dcbSAndroid Build Coastguard Worker libusb_free_device_list(devs, 1);
70*86b64dcbSAndroid Build Coastguard Worker
71*86b64dcbSAndroid Build Coastguard Worker libusb_exit(NULL);
72*86b64dcbSAndroid Build Coastguard Worker return 0;
73*86b64dcbSAndroid Build Coastguard Worker }
74