#include <hardware/bluetooth.h>

本文档定义了Android中蓝牙硬件接口的头文件`<hardware/bluetooth.h>`,包含蓝牙设备名称、扫描模式、状态、输入输出能力等枚举类型,以及错误状态、设备属性结构体等,用于蓝牙适配器和远程设备的交互操作。

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/*
 * Copyright (C) 2012 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_INCLUDE_BLUETOOTH_H
#define ANDROID_INCLUDE_BLUETOOTH_H

#include <stdbool.h>
#include <stdint.h>
#include <sys/cdefs.h>
#include <sys/types.h>

#include "avrcp/avrcp.h"
#include "bluetooth/uuid.h"
#include "raw_address.h"

/**
 * The Bluetooth Hardware Module ID
 */

#define BT_HARDWARE_MODULE_ID "bluetooth"
#define BT_STACK_MODULE_ID "bluetooth"

/** Bluetooth profile interface IDs */
#define BT_PROFILE_HANDSFREE_ID "handsfree"
#define BT_PROFILE_HANDSFREE_CLIENT_ID "handsfree_client"
#define BT_PROFILE_ADVANCED_AUDIO_ID "a2dp"
#define BT_PROFILE_ADVANCED_AUDIO_SINK_ID "a2dp_sink"
#define BT_PROFILE_SOCKETS_ID "socket"
#define BT_PROFILE_HIDHOST_ID "hidhost"
#define BT_PROFILE_HIDDEV_ID "hiddev"
#define BT_PROFILE_PAN_ID "pan"
#define BT_PROFILE_MAP_CLIENT_ID "map_client"
#define BT_PROFILE_SDP_CLIENT_ID "sdp"
#define BT_PROFILE_GATT_ID "gatt"
#define BT_PROFILE_AV_RC_ID "avrcp"
#define BT_PROFILE_AV_RC_CTRL_ID "avrcp_ctrl"
#define BT_PROFILE_HEARING_AID_ID "hearing_aid"

/** Bluetooth Device Name */
typedef struct { uint8_t name[249]; } __attribute__((packed)) bt_bdname_t;

/** Bluetooth Adapter Visibility Modes*/
typedef enum {
  BT_SCAN_MODE_NONE,
  BT_SCAN_MODE_CONNECTABLE,
  BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE
} bt_scan_mode_t;

/** Bluetooth Adapter State */
typedef enum { BT_STATE_OFF, BT_STATE_ON } bt_state_t;

/** Bluetooth Adapter Input Output Capabilities which determine Pairing/Security
 */
typedef enum {
  BT_IO_CAP_OUT,    /* DisplayOnly */
  BT_IO_CAP_IO,     /* DisplayYesNo */
  BT_IO_CAP_IN,     /* KeyboardOnly */
  BT_IO_CAP_NONE,   /* NoInputNoOutput */
  BT_IO_CAP_KBDISP, /* Keyboard display */
  BT_IO_CAP_MAX,
  BT_IO_CAP_UNKNOWN = 0xFF /* Unknown value */
} bt_io_cap_t;

/** Bluetooth Error Status */
/** We need to build on this */

typedef enum {
  BT_STATUS_SUCCESS,
  BT_STATUS_FAIL,
  BT_STATUS_NOT_READY,
  BT_STATUS_NOMEM,
  BT_STATUS_BUSY,
  BT_STATUS_DONE, /* request already completed */
  BT_STATUS_UNSUPPORTED,
  BT_STATUS_PARM_INVALID,
  BT_STATUS_UNHANDLED,
  BT_STATUS_AUTH_FAILURE,
  BT_STATUS_RMT_DEV_DOWN,
  BT_STATUS_AUTH_REJECTED,
  BT_STATUS_JNI_ENVIRONMENT_ERROR,
  BT_STATUS_JNI_THREAD_ATTACH_ERROR,
  BT_STATUS_WAKELOCK_ERROR
} bt_status_t;

/** Bluetooth PinKey Code */
typedef struct { uint8_t pin[16]; } __attribute__((packed)) bt_pin_code_t;

typedef struct {
  uint8_t status;
  uint8_t ctrl_state;   /* stack reported state */
  uint64_t tx_time;     /* in ms */
  uint64_t rx_time;     /* in ms */
  uint64_t idle_time;   /* in ms */
  uint64_t energy_used; /* a product of mA, V and ms */
} __attribute__((packed)) bt_activity_energy_info;

typedef struct {
  int32_t app_uid;
  uint64_t tx_bytes;
  uint64_t rx_bytes;
} __attribute__((packed)) bt_uid_traffic_t;

/** Bluetooth Adapter Discovery state */
typedef enum {
  BT_DISCOVERY_STOPPED,
  BT_DISCOVERY_STARTED
} bt_discovery_state_t;

/** Bluetooth ACL connection state */
typedef enum {
  BT_ACL_STATE_CONNECTED,
  BT_ACL_STATE_DISCONNECTED
} bt_acl_state_t;

/** Bluetooth SDP service record */
typedef struct {
  bluetooth::Uuid uuid;
  uint16_t channel;
  char name[256];  // what's the maximum length
} bt_service_record_t;

/** Bluetooth Remote Version info */
typedef struct {
  int version;
  int sub_ver;
  int manufacturer;
} bt_remote_version_t;

typedef struct {
  uint16_t version_supported;
  uint8_t local_privacy_enabled;
  uint8_t max_adv_instance;
  ui

在Arduino中实现蓝牙通信并将10进制数转为16进制发送,你需要使用到第三方库如SoftwareSerial或Adafruit_Bluefruit_LE以及Hexlify库来处理十六进制转换。以下是简化的步骤及示例代码: 1. 首先,在Arduino IDE中安装所需的库: - 安装SoftwareSerial库:`Sketch > Include Library > Manage Libraries...` 然后搜索 "SoftwareSerial" 并安装。 - 如果需要,安装Hexlify库:`Sketch > Include Library > Manage Libraries...` 搜索 "Hexlify"。 2. 创建一个新的Arduino项目,并设置两个Serial连接,一个用于硬件串口,另一个用于软件模拟的蓝牙通信(例如蓝牙模块): ```cpp #include <SoftwareSerial.h> #include <Hexlify.h> SoftwareSerial bt(2, 3); // RX, TX for Bluetooth module (pins 2 and 3) ``` 3. 初始化并配置蓝牙通信: ```cpp void setup() { Serial.begin(9600); bt.begin(9600); // Set baud rate same as hardware serial } ``` 4. 函数来获取用户的输入、转换为十六进制并发送: ```cpp void loop() { int decimalValue; if (Serial.available()) { // Wait for input from user or computer via USB decimalValue = Serial.parseInt(); // Convert to hexadecimal using Hexlify library String hexValue = hexlify(String(decimalValue)); // Send the hex value over Bluetooth bt.print("Hex Value: "); bt.println(hexValue); } if (bt.available()) { // Read incoming data from Bluetooth (in this example, we assume it's not used) Serial.println("Received: " + bt.readStringUntil('\n')); } } ``` 5. 在蓝牙端接收数据后,你可能还需要编写一个蓝牙客户端程序来读取并解析接收到的数据。
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