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 MATTHIAS 24 * RINGWALD 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 #ifndef __ATT_SERVER_H 38 #define __ATT_SERVER_H 39 40 #include <stdint.h> 41 #include "ble/att_db.h" 42 #include "btstack_defines.h" 43 44 #if defined __cplusplus 45 extern "C" { 46 #endif 47 48 /* API_START */ 49 /* 50 * @brief setup ATT server 51 * @param db attribute database created by compile-gatt.ph 52 * @param read_callback, see att_db.h, can be NULL 53 * @param write_callback, see attl.h, can be NULL 54 */ 55 void att_server_init(uint8_t const * db, att_read_callback_t read_callback, att_write_callback_t write_callback); 56 57 /* 58 * @brief register packet handler for ATT server events: 59 * - ATT_EVENT_CAN_SEND_NOW 60 * - ATT_EVENT_HANDLE_VALUE_INDICATION_COMPLETE 61 * - ATT_EVENT_MTU_EXCHANGE_COMPLETE 62 * @param handler 63 */ 64 void att_server_register_packet_handler(btstack_packet_handler_t handler); 65 66 /* 67 * @brief tests if a notification or indication can be send right now 68 * @param con_handle 69 * @return 1, if packet can be sent 70 */ 71 int att_server_can_send_packet_now(hci_con_handle_t con_handle); 72 73 /** 74 * @brief Request emission of ATT_EVENT_CAN_SEND_NOW as soon as possible 75 * @note ATT_EVENT_CAN_SEND_NOW might be emitted during call to this function 76 * so packet handler should be ready to handle it 77 * @param con_handle 78 */ 79 void att_server_request_can_send_now_event(hci_con_handle_t con_handle); 80 81 /** 82 * @brief Request callback when sending is possible 83 * @note callback might happend during call to this function 84 * @param callback_registration to point to callback function and context information 85 * @param con_handle 86 */ 87 void att_server_register_can_send_now_callback(btstack_context_callback_registration_t * callback_registration, hci_con_handle_t con_handle); 88 89 /* 90 * @brief notify client about attribute value change 91 * @param con_handle 92 * @param attribute_handle 93 * @param value 94 * @param value_len 95 * @return 0 if ok, error otherwise 96 */ 97 int att_server_notify(hci_con_handle_t con_handle, uint16_t attribute_handle, uint8_t *value, uint16_t value_len); 98 99 /* 100 * @brief indicate value change to client. client is supposed to reply with an indication_response 101 * @param con_handle 102 * @param attribute_handle 103 * @param value 104 * @param value_len 105 * @return 0 if ok, error otherwise 106 */ 107 int att_server_indicate(hci_con_handle_t con_handle, uint16_t attribute_handle, uint8_t *value, uint16_t value_len); 108 109 /* API_END */ 110 111 #if defined __cplusplus 112 } 113 #endif 114 115 #endif // __ATT_SERVER_H 116