146 lines
4.5 KiB
C
146 lines
4.5 KiB
C
/****************************************************************************
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* net/bluetooth/bluetooth_finddev.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <nuttx/net/net.h>
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#include <nuttx/net/radiodev.h>
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#include <nuttx/net/bluetooth.h>
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#include <nuttx/wireless/bluetooth/bt_hci.h>
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#include "netdev/netdev.h"
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#include "bluetooth/bluetooth.h"
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#ifdef CONFIG_NET_BLUETOOTH
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct bluetooth_finddev_s
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{
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FAR const bt_addr_t *bf_addr;
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FAR struct radio_driver_s *bf_radio;
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bluetooth_dev_callback
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*
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* Description:
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* Check if this device matches the connections local address.
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*
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* Input Parameters:
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* dev - The next network device in the enumeration
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*
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* Returned Value:
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* 0 if there is no match (meaning to continue looking); 1 if there is a
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* match (meaning to stop the search).
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*
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****************************************************************************/
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static int bluetooth_dev_callback(FAR struct net_driver_s *dev,
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FAR void *arg)
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{
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FAR struct bluetooth_finddev_s *match =
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(FAR struct bluetooth_finddev_s *)arg;
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DEBUGASSERT(dev != NULL && match != NULL && match->bf_addr != NULL);
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/* First, check if this network device is an Bluetooth radio and that
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* it has an assigned Bluetooth address.
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*/
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if (dev->d_lltype == NET_LL_BLUETOOTH && dev->d_mac.radio.nv_addrlen > 0)
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{
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DEBUGASSERT(dev->d_mac.radio.nv_addrlen == BLUETOOTH_ADDRSIZE);
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/* Does the device address match */
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if (BLUETOOTH_ADDRCMP(dev->d_mac.radio.nv_addr, match->bf_addr))
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{
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/* Yes.. save the match and return 1 to stop the search */
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match->bf_radio = (FAR struct radio_driver_s *)dev;
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return 1;
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}
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}
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/* Keep looking */
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return 0;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: bluetooth_find_device
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*
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* Description:
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* Select the network driver to use with the Bluetooth transaction.
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*
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* Input Parameters:
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* conn - Bluetooth connection structure (not currently used).
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* addr - The address to match the devices assigned address
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*
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* Returned Value:
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* A pointer to the network driver to use. NULL is returned on any
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* failure.
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*
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****************************************************************************/
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FAR struct radio_driver_s *
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bluetooth_find_device(FAR struct bluetooth_conn_s *conn,
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FAR const bt_addr_t *addr)
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{
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struct bluetooth_finddev_s match;
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int ret;
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DEBUGASSERT(conn != NULL);
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match.bf_addr = addr;
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match.bf_radio = NULL;
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/* Search for the Bluetooth network device whose MAC is equal to the
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* sockets bound local address.
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*/
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ret = netdev_foreach(bluetooth_dev_callback, (FAR void *)&match);
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if (ret == 1)
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{
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DEBUGASSERT(match.bf_radio != NULL);
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return match.bf_radio;
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}
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return NULL;
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}
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#endif /* CONFIG_NET_BLUETOOTH */
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