gattlib/examples/discover/discover.c

90 lines
2.6 KiB
C

/*
*
* GattLib - GATT Library
*
* Copyright (C) 2016-2021 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>
#ifdef GATTLIB_LOG_BACKEND_SYSLOG
#include <syslog.h>
#endif
#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;
#ifdef GATTLIB_LOG_BACKEND_SYSLOG
openlog("gattlib_discover", LOG_CONS | LOG_NDELAY | LOG_PERROR, LOG_USER);
setlogmask(LOG_UPTO(LOG_INFO));
#endif
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) {
GATTLIB_LOG(GATTLIB_ERROR, "Fail to connect to the bluetooth device.");
return 1;
}
ret = gattlib_discover_primary(connection, &services, &services_count);
if (ret != GATTLIB_SUCCESS) {
GATTLIB_LOG(GATTLIB_ERROR, "Fail to discover primary services.");
return 1;
}
for (i = 0; i < services_count; i++) {
gattlib_uuid_to_string(&services[i].uuid, uuid_str, sizeof(uuid_str));
GATTLIB_LOG(GATTLIB_INFO, "service[%d] start_handle:%02x end_handle:%02x uuid:%s", 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) {
GATTLIB_LOG(GATTLIB_ERROR, "Fail to discover characteristics.");
return 1;
}
for (i = 0; i < characteristics_count; i++) {
gattlib_uuid_to_string(&characteristics[i].uuid, uuid_str, sizeof(uuid_str));
GATTLIB_LOG(GATTLIB_INFO, "characteristic[%d] properties:%02x value_handle:%04x uuid:%s", i,
characteristics[i].properties, characteristics[i].value_handle,
uuid_str);
}
free(characteristics);
gattlib_disconnect(connection);
return 0;
}