1 // 2 // Copyright 2016 The Android Open Source Project 3 // 4 // Licensed under the Apache License, Version 2.0 (the "License"); 5 // you may not use this file except in compliance with the License. 6 // You may obtain a copy of the License at 7 // 8 // http://www.apache.org/licenses/LICENSE-2.0 9 // 10 // Unless required by applicable law or agreed to in writing, software 11 // distributed under the License is distributed on an "AS IS" BASIS, 12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 // See the License for the specific language governing permissions and 14 // limitations under the License. 15 // 16 17 #pragma once 18 19 #include <stdlib.h> 20 21 // HCI UART transport packet types (Volume 4, Part A, 2) 22 enum HciPacketType { 23 HCI_PACKET_TYPE_UNKNOWN = 0, 24 HCI_PACKET_TYPE_COMMAND = 1, 25 HCI_PACKET_TYPE_ACL_DATA = 2, 26 HCI_PACKET_TYPE_SCO_DATA = 3, 27 HCI_PACKET_TYPE_EVENT = 4 28 }; 29 30 // 2 bytes for opcode, 1 byte for parameter length (Volume 2, Part E, 5.4.1) 31 const size_t HCI_COMMAND_PREAMBLE_SIZE = 3; 32 const size_t HCI_LENGTH_OFFSET_CMD = 2; 33 34 // 2 bytes for handle, 2 bytes for data length (Volume 2, Part E, 5.4.2) 35 const size_t HCI_ACL_PREAMBLE_SIZE = 4; 36 const size_t HCI_LENGTH_OFFSET_ACL = 2; 37 38 // 2 bytes for handle, 1 byte for data length (Volume 2, Part E, 5.4.3) 39 const size_t HCI_SCO_PREAMBLE_SIZE = 3; 40 const size_t HCI_LENGTH_OFFSET_SCO = 2; 41 42 // 1 byte for event code, 1 byte for parameter length (Volume 2, Part E, 5.4.4) 43 const size_t HCI_EVENT_PREAMBLE_SIZE = 2; 44 const size_t HCI_LENGTH_OFFSET_EVT = 1; 45 46 const size_t HCI_PREAMBLE_SIZE_MAX = HCI_ACL_PREAMBLE_SIZE; 47 48 // Event codes (Volume 2, Part E, 7.7.14) 49 const uint8_t HCI_COMMAND_COMPLETE_EVENT = 0x0E; 50