mirror of
https://github.com/bluekitchen/btstack.git
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100 lines
3.6 KiB
C
100 lines
3.6 KiB
C
/*
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* Copyright (C) 2014 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at
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* contact@bluekitchen-gmbh.com
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*
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*/
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/**
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* Dispatcher for independent implementation of ATT client and server
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*/
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#include "l2cap.h"
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#include "att_dispatch.h"
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#include "debug.h"
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static void dummy_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *packet, uint16_t size);
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static btstack_packet_handler_t att_client_handler = &dummy_packet_handler;
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static btstack_packet_handler_t att_server_handler = &dummy_packet_handler;
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static void dummy_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *packet, uint16_t size){
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}
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static void att_packet_handler(uint8_t packet_type, uint16_t handle, uint8_t *packet, uint16_t size){
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switch (packet_type){
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case ATT_DATA_PACKET: {
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log_info("att_data_packet with opcode 0x%x", packet[0]);
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uint8_t att_pdu_odd = packet[0] & 1;
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if (att_pdu_odd){
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// odd PDUs are sent from server to client
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att_client_handler(packet_type, handle, packet, size);
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} else {
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// even PDUs are sent from client to server
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att_server_handler(packet_type, handle, packet, size);
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}
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break;
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}
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default:
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att_client_handler(packet_type, handle, packet, size);
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att_server_handler(packet_type, handle, packet, size);
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break;
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}
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}
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/**
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* @brief reset att dispatchter
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* @param packet_hander for ATT client packets
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*/
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void att_dispatch_register_client(btstack_packet_handler_t packet_handler){
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if (packet_handler == NULL){
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packet_handler = dummy_packet_handler;
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}
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att_client_handler = packet_handler;
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l2cap_register_fixed_channel(att_packet_handler, L2CAP_CID_ATTRIBUTE_PROTOCOL);
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}
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/**
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* @brief reset att dispatchter
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* @param packet_hander for ATT server packets
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*/
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void att_dispatch_register_server(btstack_packet_handler_t packet_handler){
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if (packet_handler == NULL){
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packet_handler = dummy_packet_handler;
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}
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att_server_handler = packet_handler;
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l2cap_register_fixed_channel(att_packet_handler, L2CAP_CID_ATTRIBUTE_PROTOCOL);
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}
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