diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/Makefile.am | 2 | ||||
| -rw-r--r-- | examples/hotplugtest.c | 96 |
2 files changed, 97 insertions, 1 deletions
diff --git a/examples/Makefile.am b/examples/Makefile.am index a28a300..380e13f 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -1,7 +1,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/libusb LDADD = ../libusb/libusb-1.0.la -noinst_PROGRAMS = listdevs xusb fxload +noinst_PROGRAMS = listdevs xusb fxload hotplugtest if HAVE_SIGACTION noinst_PROGRAMS += dpfp diff --git a/examples/hotplugtest.c b/examples/hotplugtest.c new file mode 100644 index 0000000..6f16827 --- /dev/null +++ b/examples/hotplugtest.c @@ -0,0 +1,96 @@ +/* + * libusb example program for hotplug API + * Copyright © 2012-2013 Nathan Hjelm <hjelmn@mac.ccom> + * + * 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 <stdlib.h> +#include <stdio.h> + +#include "libusb.h" + +int done = 0; +libusb_device_handle *handle; + +static int LIBUSB_CALL hotplug_callback(libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event, void *user_data) +{ + struct libusb_device_descriptor desc; + int rc; + + rc = libusb_get_device_descriptor(dev, &desc); + if (LIBUSB_SUCCESS != rc) { + fprintf (stderr, "Error getting device descriptor\n"); + } + + printf ("Device attached: %04x:%04x\n", desc.idVendor, desc.idProduct); + + libusb_open (dev, &handle); + + done++; + + return 0; +} + +static int LIBUSB_CALL hotplug_callback_detach(libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event, void *user_data) +{ + printf ("Device detached\n"); + + libusb_close (handle); + + done++; + return 0; +} + +int main(int argc, char *argv[]) +{ + libusb_hotplug_callback_handle hp[2]; + int product_id, vendor_id, class_id; + int rc; + + vendor_id = (argc > 1) ? strtol (argv[1], NULL, 0) : 0x045a; + product_id = (argc > 2) ? strtol (argv[2], NULL, 0) : 0x5005; + class_id = (argc > 3) ? strtol (argv[3], NULL, 0) : LIBUSB_HOTPLUG_MATCH_ANY; + + libusb_init (NULL); + + if (!libusb_has_capability (LIBUSB_CAP_HAS_HOTPLUG)) { + printf ("Hotplug capabilites are not supported on this platform\n"); + libusb_exit (NULL); + return EXIT_FAILURE; + } + + rc = libusb_hotplug_register_callback (NULL, LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, 0, vendor_id, + product_id, class_id, hotplug_callback, NULL, &hp[0]); + if (LIBUSB_SUCCESS != rc) { + fprintf (stderr, "Error registering callback 0\n"); + libusb_exit (NULL); + return EXIT_FAILURE; + } + + rc = libusb_hotplug_register_callback (NULL, LIBUSB_HOTPLUG_EVENT_DEVICE_LEFT, 0, vendor_id, + product_id,class_id, hotplug_callback_detach, NULL, &hp[1]); + if (LIBUSB_SUCCESS != rc) { + fprintf (stderr, "Error registering callback 1\n"); + libusb_exit (NULL); + return EXIT_FAILURE; + } + + while (done < 2) { + libusb_handle_events (NULL); + } + + libusb_exit (NULL); +} |