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authorBenjamin Dobell <benjamin.dobell+github@glassechidna.com.au>2010-12-04 14:25:04 +0100
committerBenjamin Dobell <benjamin.dobell+github@glassechidna.com.au>2010-12-04 14:25:04 +0100
commit46f2c1134d276944fb74584a61d90cc363aee7eb (patch)
tree6fa14b7ef509a3fb84305dec013dd24bcae6c17d /libusb-1.0/examples/lsusb.c
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Diffstat (limited to 'libusb-1.0/examples/lsusb.c')
-rw-r--r--libusb-1.0/examples/lsusb.c64
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;
+}
+