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diff --git a/src/lshidpp.c b/src/lshidpp.c
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+/*
+ * Copyright (c) 2012
+ * Lars-Dominik Braun <lars@6xq.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+/* getopt() */
+#define _POSIX_C_SOURCE 2
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <assert.h>
+#include <stdbool.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#include <libusb.h>
+
+#include "device.h"
+#include "usb.h"
+#include "battery.h"
+#include "reprogrammable.h"
+
+#define HIDPP_USB_VENDOR 0x46d
+/* unifying receiver */
+#define HIDPP_USB_PRODUCT 0xc52b
+
+int main (int argc, char **argv) {
+ libusb_context *ctx;
+ int ret;
+ ssize_t devicesCount;
+ libusb_device **devices;
+ hidppModule_t modules[] = {moduleBattery, moduleReprogrammable};
+
+ int opt;
+ while ((opt = getopt (argc, argv, "s:")) != -1) {
+ switch (opt) {
+ /* bus:device, same flag as `lsusb` */
+ case 's':
+ break;
+
+ default: /* '?' */
+ exit (EXIT_FAILURE);
+ break;
+ }
+ }
+
+ ret = libusb_init (&ctx);
+ if (ret != LIBUSB_SUCCESS) {
+ return ret;
+ }
+
+ libusb_set_debug (ctx, 3);
+
+ devicesCount = libusb_get_device_list (ctx, &devices);
+ for (size_t i = 0; i < devicesCount; i++) {
+ struct libusb_device_descriptor desc;
+ int r = libusb_get_device_descriptor(devices[i], &desc);
+ if (r < 0) {
+ fprintf(stderr, "failed to get device descriptor");
+ continue;
+ }
+ printf ("device bus=%x, address=%x, vendor=%x, product=%x\n",
+ libusb_get_bus_number (devices[i]),
+ libusb_get_device_address (devices[i]),
+ desc.idVendor, desc.idProduct);
+ if (desc.idVendor == HIDPP_USB_VENDOR && desc.idProduct == HIDPP_USB_PRODUCT) {
+ hidppDevice_t d;
+ libusb_device_handle *h;
+
+ hidppUsbDeviceOpen (devices[i], &h);
+ hidppDeviceInit (&d, h, 0x01);
+ hidppDevicePrint (&d);
+
+ for (size_t j = 0; j < sizeof (modules)/sizeof (*modules); j++) {
+ hidppModule_t *m = &modules[j];
+ void *data;
+ assert (m->available != NULL);
+ if (m->read != NULL && m->available (&d)) {
+ assert (m->print != NULL);
+ m->read (&d, &data);
+ m->print (data);
+ free (data);
+ }
+ }
+
+ hidppDeviceDestroy (&d);
+ hidppUsbDeviceClose (h);
+ }
+ }
+ libusb_free_device_list (devices, devicesCount);
+
+ libusb_exit (ctx);
+
+ return 0;
+}
+