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Diffstat (limited to 'libusb-1.0/examples/lsusb.c')
| -rw-r--r-- | libusb-1.0/examples/lsusb.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/libusb-1.0/examples/lsusb.c b/libusb-1.0/examples/lsusb.c new file mode 100644 index 0000000..e36e0c1 --- /dev/null +++ b/libusb-1.0/examples/lsusb.c @@ -0,0 +1,64 @@ +/* + * libusb example program to list devices on the bus + * Copyright (C) 2007 Daniel Drake <dsd@gentoo.org> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <stdio.h> +#include <sys/types.h> + +#include "libusb.h" + +static void print_devs(libusb_device **devs) +{ + libusb_device *dev; + int i = 0; + + while ((dev = devs[i++]) != NULL) { + struct libusb_device_descriptor desc; + int r = libusb_get_device_descriptor(dev, &desc); + if (r < 0) { + fprintf(stderr, "failed to get device descriptor"); + return; + } + + printf("%04x:%04x (bus %d, device %d)\n", + desc.idVendor, desc.idProduct, + libusb_get_bus_number(dev), libusb_get_device_address(dev)); + } +} + +int main(void) +{ + libusb_device **devs; + int r; + ssize_t cnt; + + r = libusb_init(NULL); + if (r < 0) + return r; + + cnt = libusb_get_device_list(NULL, &devs); + if (cnt < 0) + return (int) cnt; + + print_devs(devs); + libusb_free_device_list(devs, 1); + + libusb_exit(NULL); + return 0; +} + |