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64 lines
1.6 KiB
64 lines
1.6 KiB
/* |
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* libusb example program to list devices on the bus |
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* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> |
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* |
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* This library is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* This library is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with this library; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include <stdio.h> |
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#include <sys/types.h> |
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#include <libusb.h> |
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static void print_devs(libusb_device **devs) |
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{ |
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libusb_device *dev; |
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int i = 0; |
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while ((dev = devs[i++]) != NULL) { |
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struct libusb_device_descriptor desc; |
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int r = libusb_get_device_descriptor(dev, &desc); |
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if (r < 0) { |
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fprintf(stderr, "failed to get device descriptor"); |
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return; |
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} |
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printf("%04x:%04x (bus %d, device %d)\n", |
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desc.idVendor, desc.idProduct, |
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libusb_get_bus_number(dev), libusb_get_device_address(dev)); |
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} |
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} |
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int main(void) |
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{ |
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libusb_device **devs; |
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int r; |
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ssize_t cnt; |
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r = libusb_init(NULL); |
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if (r < 0) |
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return r; |
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cnt = libusb_get_device_list(NULL, &devs); |
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if (cnt < 0) |
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return (int) cnt; |
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print_devs(devs); |
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libusb_free_device_list(devs, 1); |
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libusb_exit(NULL); |
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return 0; |
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} |
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