discover.c

/*
 *
 *  GattLib - GATT Library
 *
 *  Copyright (C) 2016  Olivier Martin <olivier@labapart.org>
 *
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#include <stdio.h>
#include <stdlib.h>

#include "gattlib.h"

int main(int argc, char *argv[])
{
	gatt_connection_t* connection;
	gattlib_primary_service_t* services;
	gattlib_characteristic_t* characteristics;
	int services_count, characteristics_count;
	char uuid_str[MAX_LEN_UUID_STR + 1];
	int ret, i;

	if (argc != 2) {
		printf("%s <device_address>\n", argv[0]);
		return 1;
	}

	connection = gattlib_connect(NULL, argv[1], GATTLIB_CONNECTION_OPTIONS_LEGACY_DEFAULT);
	if (connection == NULL) {
		fprintf(stderr, "Fail to connect to the bluetooth device.\n");
		return 1;
	}

	ret = gattlib_discover_primary(connection, &services, &services_count);
	if (ret != GATTLIB_SUCCESS) {
		fprintf(stderr, "Fail to discover primary services.\n");
		return 1;
	}

	for (i = 0; i < services_count; i++) {
		gattlib_uuid_to_string(&services[i].uuid, uuid_str, sizeof(uuid_str));

		printf("service[%d] start_handle:%02x end_handle:%02x uuid:%s\n", i,
				services[i].attr_handle_start, services[i].attr_handle_end,
				uuid_str);
	}
	free(services);

	ret = gattlib_discover_char(connection, &characteristics, &characteristics_count);
	if (ret != GATTLIB_SUCCESS) {
		fprintf(stderr, "Fail to discover characteristics.\n");
		return 1;
	}
	for (i = 0; i < characteristics_count; i++) {
		gattlib_uuid_to_string(&characteristics[i].uuid, uuid_str, sizeof(uuid_str));

		printf("characteristic[%d] properties:%02x value_handle:%04x uuid:%s\n", i,
				characteristics[i].properties, characteristics[i].value_handle,
				uuid_str);
	}
	free(characteristics);

	gattlib_disconnect(connection);
	return 0;
}