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 38 #define BTSTACK_FILE__ "tx_power_service_server.c" 39 40 41 /** 42 * Implementation of the GATT TX Power Service Server 43 * To use with your application, add '#import <tx_power_service.gatt' to your .gatt file 44 */ 45 46 #include "btstack_defines.h" 47 #include "ble/att_db.h" 48 #include "ble/att_server.h" 49 #include "btstack_util.h" 50 #include "bluetooth_gatt.h" 51 #include "btstack_debug.h" 52 53 54 #include "ble/gatt-service/tx_power_service_server.h" 55 56 static att_service_handler_t tx_power_service_handler; 57 58 static int8_t tx_power_level_value; 59 static uint16_t tx_power_level_value_handle; 60 61 62 static uint16_t tx_power_service_read_callback(hci_con_handle_t con_handle, uint16_t attribute_handle, uint16_t offset, uint8_t * buffer, uint16_t buffer_size){ 63 UNUSED(con_handle); 64 65 if (attribute_handle == tx_power_level_value_handle){ 66 return att_read_callback_handle_byte((uint8_t)tx_power_level_value, offset, buffer, buffer_size); 67 } 68 return 0; 69 } 70 71 void tx_power_service_server_init(int8_t tx_power_level){ 72 tx_power_level_value = tx_power_level; 73 74 // get service handle range 75 uint16_t start_handle = 0; 76 uint16_t end_handle = 0xfff; 77 bool service_found = gatt_server_get_handle_range_for_service_with_uuid16(ORG_BLUETOOTH_SERVICE_TX_POWER, &start_handle, &end_handle); 78 btstack_assert(service_found); 79 UNUSED(service_found); 80 81 // get characteristic value handle and client configuration handle 82 tx_power_level_value_handle = gatt_server_get_value_handle_for_characteristic_with_uuid16(start_handle, end_handle, ORG_BLUETOOTH_CHARACTERISTIC_TX_POWER_LEVEL); 83 84 // register service with ATT Server 85 tx_power_service_handler.start_handle = start_handle; 86 tx_power_service_handler.end_handle = end_handle; 87 tx_power_service_handler.read_callback = &tx_power_service_read_callback; 88 tx_power_service_handler.write_callback = NULL; 89 att_server_register_service_handler(&tx_power_service_handler); 90 } 91 92 void tx_power_service_server_set_level(int8_t tx_power_level){ 93 tx_power_level_value = tx_power_level; 94 } 95