1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 39 /** 40 * @title ATT Dispatch 41 * 42 * Dispatcher for independent implementation of ATT client and server. 43 * 44 */ 45 46 #ifndef ATT_DISPATCH_H 47 #define ATT_DISPATCH_H 48 49 #include "btstack_util.h" 50 51 #if defined __cplusplus 52 extern "C" { 53 #endif 54 55 /** 56 * @brief Register packet handler for ATT Client PDUs 57 * @param packet_handler 58 */ 59 void att_dispatch_register_client(btstack_packet_handler_t packet_handler); 60 61 /** 62 * @brief Register packet handler for ATT Server PDUs 63 * @param packet_handler 64 */ 65 void att_dispatch_register_server(btstack_packet_handler_t packet_handler); 66 67 /** 68 * @brief Register L2CAP ATT Service with fixed PSM 69 * @note requires ENABLE_GATT_OVER_CLASSIC 70 */ 71 void att_dispatch_classic_register_service(void); 72 73 /** 74 * @brief Create L2CAP ATT Connection 75 * @note ENABLE_GATT_OVER_CLASSIC 76 * @param address 77 * @param l2cap_psm 78 */ 79 uint8_t att_dispatch_classic_connect(bd_addr_t address, uint16_t l2cap_psm, uint16_t *out_cid); 80 81 /** 82 * @brief can send packet for client 83 * @param con_handle 84 */ 85 bool att_dispatch_client_can_send_now(hci_con_handle_t con_handle); 86 87 /** 88 * @brief can send packet for server 89 * @param con_handle 90 */ 91 bool att_dispatch_server_can_send_now(hci_con_handle_t con_handle); 92 93 /** 94 * @brief Request emission of L2CAP_EVENT_CAN_SEND_NOW as soon as possible for client 95 * @note L2CAP_EVENT_CAN_SEND_NOW might be emitted during call to this function 96 * so packet handler should be ready to handle it 97 * @param con_handle 98 */ 99 void att_dispatch_client_request_can_send_now_event(hci_con_handle_t con_handle); 100 101 /** 102 * @brief Request emission of L2CAP_EVENT_CAN_SEND_NOW as soon as possible for server 103 * @note L2CAP_EVENT_CAN_SEND_NOW might be emitted during call to this function 104 * so packet handler should be ready to handle it 105 * @param con_handle 106 */ 107 void att_dispatch_server_request_can_send_now_event(hci_con_handle_t con_handle); 108 109 /** 110 * @brief Used for propogating a updated MTU from att_server to gatt_client 111 * @param con_handle 112 * @param mtu 113 */ 114 void att_dispatch_server_mtu_exchanged(hci_con_handle_t con_handle, uint16_t new_mtu); 115 116 /** 117 * @brief Used for propogating a updated MTU from gatt_client to att_server 118 * @param con_handle 119 * @param mtu 120 */ 121 void att_dispatch_client_mtu_exchanged(hci_con_handle_t con_handle, uint16_t new_mtu); 122 123 #if defined __cplusplus 124 } 125 #endif 126 127 #endif // ATT_DISPATCH_H 128