CN105516897A - Method and device for one-key establishment of communication connection between Bluetooth devices - Google Patents

Abstract

The present invention proposes a method and device for establishing a communication connection between Bluetooth devices with one key. The method is implemented by installing an application program on a smart phone, including: obtaining Bluetooth authority, opening the Bluetooth function of the smart phone, and enabling the surrounding Bluetooth The device can search for the smartphone; control the Bluetooth adapter to find all the surrounding Bluetooth devices; determine whether there is a bound Bluetooth device; The names of the bound Bluetooth devices are displayed on the screen, and the Bluetooth device selected by the user is automatically connected according to the user's choice; if there is no bound Bluetooth device, the names of the searched Bluetooth devices are displayed on the screen one by one. , and then automatically connect to the Bluetooth device selected by the user according to the user's choice. The invention can automatically establish a communication connection between two bluetooth devices, which is completed by one key, and is convenient for users to use the bluetooth devices to connect to smart phones.

Description

Method and device for establishing a communication connection between bluetooth devices with one key

technical field

The invention relates to the technical field of short-distance communication, in particular to a method and device for establishing a communication connection between Bluetooth devices with one key.

Background technique

Bluetooth technology is a radio technology that supports short-distance communication of devices (generally within 10m), and can exchange information wirelessly between devices including mobile phones, PDAs, wireless headsets, notebook computers, and related peripherals. The use of Bluetooth technology can effectively simplify the communication between devices, and also simplify the communication between devices and the Internet (Internet), so that the transmission of voice data becomes more rapid and efficient. Bluetooth technology adopts a distributed network structure and fast frequency hopping and short packet technology, supports point-to-point and point-to-multipoint communication, and works in the global 2.4GHzISM (IndustrialScientificMedical, industrial, scientific, medical) radio frequency band, and its data rate It is 1Mbps, adopting time division duplex transmission scheme to realize full-duplex transmission.

Two roles are defined in the Bluetooth headset application framework (HeadSetProfile, HSP): audio gateway (AudioGateway, AG) and headset (Headset, HS). Among them, AG is an audio gateway device responsible for input and output, usually a mobile phone or a PC; HS is a device for AG's remote audio input and output mechanism. When the Bluetooth headset performs voice communication, AG and HS will exist at the same time. In the connection communication service of the Bluetooth headset, both the AG and the HS can act as a server (Server) and a client (Client) respectively, and the roles played by the two are relative.

Input audio request connection establishment, that is, when the host program receives an audio input request, the AG will initiate a connection creation request as a client. After the connection process is established, the AG will notify the user by ringing. After receiving the notification, the user will respond to the request by pressing the answer button on the Bluetooth headset, and then the HS will send an AT command to the AG. At this time, the audio input The connection is established. The establishment of an output audio connection request is a request initiated by the HS as a client to initiate an output audio connection to the AG. For example, when the user presses a function key on the headset, the HS will send an AT command to the AG, and after receiving the above command, the SCO link will be established, thus completing the establishment of the output audio connection.

After the above-mentioned SCO link is established, the voice connection can be transmitted bidirectionally between the HS and the AG. There are two cases: For the voice connection transfer process from AG to HS, this process is initiated by some operation of the HS user. At this time, the HS will send an AT command to the AG, and the AG will complete the audio connection after the AG responds. Transfer: For the voice connection transfer process from the HS to the AG, there is no need to send an instruction, and the AG initiates the transfer of the audio connection directly. After the connection is established, the volume can be adjusted remotely, that is, the volume can be adjusted by sending AT commands through the headset.

With the popularity of smart phones, more and more people use smart phone accessories, such as bluetooth earphones. However, in the prior art, the connection steps between the Bluetooth device and the smart phone are very complicated. First, the user needs to open the Bluetooth device in the system setting interface, then open the "visible" setting, then search for the surrounding devices, and select one of the devices to enter the connection password. Key and so on at least five steps to achieve. This is very cumbersome for older users.

Contents of the invention

The object of the present invention is to propose a method and device for establishing a communication connection between Bluetooth devices with one key, which can automatically establish a communication connection between two Bluetooth devices and complete it with one key, making it convenient for users to use Bluetooth devices to connect to smart phones.

The present invention is achieved through the following technical solutions.

A method for establishing a communication connection with one key between bluetooth devices, the method is realized by installing an application program on a smart phone, and the method includes:

S1: The application obtains the Bluetooth permission, and turns on the Bluetooth function of the smart phone, so that the surrounding Bluetooth devices can search for the smart phone with the Bluetooth function;

S2: The application program controls the Bluetooth adapter to find all the surrounding Bluetooth devices, and returns the names and MA addresses of the searched Bluetooth devices;

S3: The application judges whether there is a "bound" Bluetooth device;

S4: If there is a unique "bound" bluetooth device, the application automatically connects to the bluetooth device, and then executes S7; otherwise, the application uses the names of multiple "bound" bluetooth devices Displayed on the screen of the smart phone, according to the user's selection, the application automatically connects to the Bluetooth device selected by the user, and then executes S7;

S5: If there is no "bound" Bluetooth device, the application program displays the names of the searched Bluetooth devices on the screen of the smart phone one by one;

S6: According to the selection of the user, the application automatically connects to the Bluetooth device selected by the user;

S7: After the communication connection between the smart phone and the Bluetooth device is established, voice data transmission is performed.

As a further improvement of the present invention, the basic rules of the layout design include: the design of the power rail, the size of the standard cell, the width of the standard cell, the grid point Pitch, and the position of the input and output pins.

As a further improvement of the present invention, the Bluetooth authority includes BLUETOOTH and BLUETOOTH_ADMIN.

As a further improvement of the present invention, in step S4, the automatic connection of the application program to the Bluetooth device is specifically: establishing a link of a shared key between the smart phone and the Bluetooth device, and the application program sends the stored key to the The Bluetooth device is paired, and if the pairing is successful, step S7 is executed.

As a further improvement of the present invention, in step S7, the automatic connection of the application program to the Bluetooth device is specifically: establishing a shared key link between the smart phone and the Bluetooth device, and the application program sends the default key to the Bluetooth device. If the pairing is successful, execute step S7; if the pairing is unsuccessful, the application program replaces the default key and initiates the pairing until the number of attempts reaches the preset value, and prompts the user on the interface that the pairing has failed.

As a further improvement of the present invention, the method further includes step S8: the application program disconnects the connected Bluetooth headset device according to the user's selection.

The present invention also provides a device for establishing a communication connection between Bluetooth devices with one key, the device is located on a smart phone, and the device includes:

The authority acquisition unit is used to acquire the bluetooth authority, and turn on the bluetooth function of the smart phone, so that the surrounding bluetooth devices can search for the smart phone with the bluetooth function;

The device search unit is used for the Bluetooth adapter to find all the Bluetooth devices around, and returns the name and MAC address of the searched Bluetooth devices;

a judging unit, configured to judge whether there is a "bound" bluetooth device;

The first display unit is used to display the names of multiple "bound" Bluetooth devices on the screen of the smart phone when there are multiple "bound" Bluetooth devices;

The first automatic connection unit is used to automatically connect the Bluetooth device when there is a unique "bound" Bluetooth device, or, according to the user's selection, automatically connect to the Bluetooth device selected by the user;

The second display unit is used to display the names of the searched Bluetooth devices on the screen of the smart phone one by one when there is no "bound" Bluetooth device;

The second automatic connection unit is used to automatically connect the Bluetooth device selected by the user according to the selection of the user;

The voice data transmission unit is used for transmitting voice data after the communication connection between the smart phone and the bluetooth device is established.

As a further improvement of the present invention, the automatic connection of the bluetooth device by the first automatic connection unit specifically includes: establishing a shared key link between the smart phone and the bluetooth device, and the application program sends the stored key to the The Bluetooth device is paired, and if the pairing is successful, a communication connection between the smart phone and the Bluetooth device is established.

As a further improvement of the present invention, the automatic connection of the bluetooth device by the second automatic connection unit specifically includes: establishing a shared key link between the smart phone and the bluetooth device, and the application program sends the default key to the The Bluetooth device is paired. If the pairing is successful, a communication connection between the smart phone and the Bluetooth device is established; The user is prompted that pairing failed.

As a further improvement of the present invention, the device further includes: a disconnection unit, configured to disconnect the connected Bluetooth headset device according to user selection.

Description of drawings

Fig. 1 is the method flowchart of the first embodiment of the present invention;

Fig. 2 is a device block diagram of the second embodiment of the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The following description of the method of the present invention is carried out based on the Android operating system, and as those skilled in the art, it can be easily transplanted to other smart phone operating systems for implementation.

What shown in accompanying drawing 1 is the first embodiment of the present invention, a kind of method for establishing a communication connection with one key between bluetooth devices, and this method realizes by installing an application program on the smart phone, and this method comprises the following steps:

S1: The application program obtains the Bluetooth permission, and turns on the Bluetooth function of the smart phone, so that the surrounding Bluetooth devices can search for the smart phone with the Bluetooth function; the Bluetooth permission includes BLUETOOTH and BLUETOOTH_ADMIN.

Detect whether the device supports Bluetooth before turning on Bluetooth. BletoothAdapter is the entry point for Bluetooth interaction, so it is set as a private member in the Bluetooth control class of BletoothController, and the access interface is provided externally through getAdapter. BletoothAdapter can be obtained through the getDefaultAdapter() method. If the return value is null, it means that the device does not support Bluetooth.

Generally, the function isEnable() is used to detect whether the Bluetooth is available. If the current Bluetooth is not available, there are two ways to open the Bluetooth device: use the user interface to open; silently open, that is, you do not need to ask for the user's consent, directly force the Bluetooth function to be turned on, but in To open Bluetooth in this way under the Android platform, you need to obtain the Android.permission.BLUETOOTH_ADMIN permission.

The present invention opens the bluetooth device simultaneously when opening the application software, that is, adopts a silent opening mode. Or turn on the bluetooth device at the same time when you click "one-key connection" in the application software.

The permissions in Android design are roughly divided into three categories, namely Android phone owner permissions, Android root permissions, and Android application permissions.

Bluetooth permissions (BluetoothPermissions) refer to a configuration that needs to be declared when applying Bluetooth features. When using Bluetooth features in an application, at least one Bluetooth permission needs to be declared: BLUETOOTH and BLUETOOTH_ADMIN. In order to perform any Bluetooth communication operation, such as requesting a connection, receiving a connection, or transmitting data, you must request the BLUETOOTH permission, that is, any Bluetooth-related API needs to use this permission.

BLUETOOTH_ADMIN permission must be requested in order to initiate device discovery or control Bluetooth settings, such as device discovery, Bluetooth settings, booting devices, and manipulating Bluetooth. Most applications need this permission only to be able to discover local bluetooth devices. Other functions authorized by this permission should not be used unless the app is a "powerful controller" to modify Bluetooth settings at the user's request. For these two permissions, if you use the BLUETOOTH_ADMIN permission, you must have the BLUETOOTH permission.

The AndroidMainifest.xml file is included in the APK package of each application, which not only includes the application's runtime library, running dependencies, etc., but also records the system access content required by the application. When developing application software, the programmer needs to apply for access permission to the Android system by setting the uses-permission part in the file. So the way to set the Bluetooth permission is to declare the Bluetooth permission uses-permissions in the manifest file.

S2: The application program controls the Bluetooth adapter to search for all surrounding Bluetooth devices, and returns the names and MA addresses of the searched Bluetooth devices.

The method for searching nearby Bluetooth devices adopted by the present invention is performed in an asynchronous manner in the startDiscovery method of the BluetoothAdapter class, which can quickly find nearby Bluetooth devices without spending a long time waiting for the search result.

After searching for devices, you need to receive the detailed information of the searched Bluetooth devices to the mobile phone, that is, execute the Intent operation of ACTION_FOUND, and register a BroadcastReceeiver object to ensure that the detailed information of the Bluetooth devices can be accurately received.

S3: The application judges whether there is a "bound" Bluetooth device.

S4: If there is a unique "bound" bluetooth device, the application automatically connects to the bluetooth device, and then executes S7; otherwise, the application uses the names of multiple "bound" bluetooth devices Displayed on the screen of the smart phone, according to the user's selection, the application automatically connects to the Bluetooth device selected by the user, and then executes S7.

S5: If there is no "bound" Bluetooth device, the application program displays the names of the searched Bluetooth devices on the screen of the smart phone one by one.

S6: According to the selection of the user, the application automatically connects to the Bluetooth device selected by the user.

When pairing, the AG has already completed the search for device status. After the search is completed, select the address of the device to be paired from the addresses of the searched Bluetooth headsets or other devices for pairing. During this process, get the matched devices by calling the getBonedDevice() method in the BluetoothAdapter class, which will return a BluetoothDevice array that can distinguish each paired device.

The pairing process must be completed before the HS communicates with the AG. During the pairing process, a shared key link will be established between the two Bluetooth devices. At the same time, the HS will also store the key of this link. When connecting to the AG next time, it will identify whether it has been paired before. If it has already been paired, the user does not need to perform the pairing operation between HS and AG again. If the pairing is successful, the HS will enter the connection state as a slave device. Only when the HS enters the connected state can it receive voice from the mobile phone. Otherwise, the HS will remain in the pending pairing state until the AG successfully pairs with it.

If the HS has never been connected to the AG, the application will send the default key to the Bluetooth device for pairing. If the pairing is successful, it will enter the connection state; if the pairing is unsuccessful, the application will replace the default key. key to initiate pairing again until the number of attempts reaches the preset value, and the user will be prompted on the interface that the pairing failed. Usually, the default key will be regular character strings such as "1234", "123456", "0000", etc., which are set by default when leaving the factory. The number of attempts can be 10.

S7: After the communication connection between the smart phone and the Bluetooth device is established, voice data transmission is performed.

(1) The HeadsetBase class can be used in the realization of Bluetooth communication

This class provides basic functionality for communication between the phone and the headset. Some important attributes and methods in the HeadsetBase class used in the programming process of the present invention are as shown in table 1:

Table 1 HeadsetBase class

State is used to record the SCO link state, and GetState() is responsible for obtaining the current connection state. HeadThread is started with the creation of the HeadsetBase object and is responsible for processing the instructions of the remote headset. The main method is Connect(), which is responsible for establishing a connection. If the connection is successfully established, it returns 1, otherwise it returns -1. When two Bluetooth devices establish a connection, both the master device and the slave device can initiate a connection establishment request. If the request is initiated by the slave device, the device must be in a queryable state and continuously perform page scanning; if the request is initiated by the master device, the device must initiate an RFCOMM connection to the selected Bluetooth device. When the HS is waiting for the Bluetooth AG to initiate a connection as a slave device, the AG will send a ringing command. When the HS receives the ringing command, it will make a ringing sound. The connection is established. At this time, the RFCOMM connection has been successfully established. After the RFCOMM connection is established, the AG will initiate the SCO connection establishment request again, and when the HS receives the SCO connection establishment request, it will set the earphone voice group, and the SCO link establishment is successful. After the above two connections are successfully established, the user can perform voice communication between the HS and the AG. The method Disconnect() is used to disconnect the SCO connection, and the return value is the same as the Connect method.

The SetupControl(CmdTypecmd) method is responsible for controlling related configurations, such as remote control of the volume, that is, the HS sends the microphone and speaker gain requests to the AG, and the AG will initialize the two gains by configuring the parameter cmd.

(2) A2DP application architecture can be used to realize high-quality voice communication

A2DPHandler is the core of the application framework, and this module is implemented by the A2DPHandler class. Some important attributes and methods in the A2DPHandler class that the present invention uses in programming are as shown in Table 2:

Table 2A2DPHandler class

The attribute FirstCall in Table 2 is responsible for recording whether the module is called for the first time; PCMQueue is used to store the circular buffer queue of PCM data packets; A2DPPacketQueue is used to store the circular buffer queue of A2DPPacket data packets.

The method Start() in Table 2 is called when the A2DP module receives the first PCM packet. It is mainly responsible for A2DP connection, AVRCP (Audio/VideoRemoteControlProfile) establishment, and signal and timer setting. The method returns 1 successfully. Otherwise, return 0; Stop() is opposite to Start(), that is, disconnect A2DP connection, terminate AVRCP remote monitoring, and the return value is the same as Start().

In the method Send(constvoid*buffer, size_tbytes,intrate,intchannel,char*A2DPaddr), buffer is the first address of the data packet, bytes is the size of the data packet, rate is the sampling frequency, channel is the number of channels, and A2DPaddr is the address of the Bluetooth headset. When this function is called, the data packet will be sent to PCMQueue, and the size of each packet will be divided into 512 bytes. The sampling rate and the number of channels will be configured during SBC (SubBandCoding) compression. If the address parameter changes during this process, the connection needs to be disconnected and re-established.

The method of the present invention further includes step S8: the application program disconnects the connected Bluetooth headset device according to the user's choice.

Accompanying drawing 2 is the second embodiment of the present invention, a kind of block diagram of the device that one key establishes communication connection between the bluetooth device based on Android, described device is positioned on the smart phone based on Android, and described device comprises:

The authority acquisition unit is used to acquire the bluetooth authority, and turn on the bluetooth function of the smart phone, so that the surrounding bluetooth devices can search for the smart phone with the bluetooth function.

The device search unit is used for the bluetooth adapter to find all the bluetooth devices around, and return the name and MAC address of the searched bluetooth devices.

The judging unit is configured to judge whether there is a "bound" Bluetooth device.

The first display unit is configured to display the names of multiple "bound" Bluetooth devices on the screen of the smart phone when there are multiple "bound" Bluetooth devices.

The first automatic connection unit is configured to automatically connect the bluetooth device when there is a unique "bound" bluetooth device, or, according to the user's selection, automatically connect to the bluetooth device selected by the user.

The second display unit is configured to display the names of the searched bluetooth devices on the screen of the smart phone one by one when there is no "bound" bluetooth device.

The second automatic connection unit is used for automatically connecting the bluetooth device selected by the user according to the selection of the user.

The voice data transmission unit is used for transmitting voice data after the communication connection between the smart phone and the bluetooth device is established.

The disconnection unit is used for disconnecting the connected Bluetooth headset device according to the user's choice.

Those skilled in the art should understand that the embodiments of the present invention may be provided as methods, systems, devices or computer program products. Accordingly, the present invention can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing equipment to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing equipment produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

While preferred embodiments of the invention have been described, additional changes and modifications to these embodiments can be made by those skilled in the art once the basic inventive concept is appreciated. Therefore, it is intended that the appended claims be construed to cover the preferred embodiment as well as all changes and modifications which fall within the scope of the invention.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. the method that between bluetooth equipment, one key establishes a communications link, is characterized in that: described method realizes by installing an application program on smart mobile phone, and described method comprises:

S1: described application program obtains bluetooth authority, opens the Bluetooth function of described smart mobile phone, the bluetooth equipment of surrounding is searched smart mobile phone that this has Bluetooth function;

S2: described application program controlling Bluetooth adapter searches all bluetooth equipments around, and the title of the bluetooth equipment searched and MAC Address is returned;

S3: described application program judges whether the bluetooth equipment that there is " binding ";

S4: if the bluetooth equipment of existence anduniquess " binding ", then described application program is from being dynamically connected described bluetooth equipment, then performs S7; Otherwise the title of the bluetooth equipment of multiple " binding " is presented on the screen of described smart mobile phone by described application program, according to the selection of user, the bluetooth equipment that described application program is selected from the user that is dynamically connected, then performs S7;

S5: the bluetooth equipment if there is no " bound ", the title of the bluetooth equipment searched is presented on the screen of described smart mobile phone by described application program one by one;

S6: according to the selection of user, the bluetooth equipment that described application program is selected from the user that is dynamically connected;

S7: after setting up the communication connection between smart mobile phone and bluetooth equipment, carries out the transmission of speech data.

2. method according to claim 1, is characterized in that: described bluetooth authority comprises BLUETOOTH and BLUETOOTH_ADMIN.

3. method according to claim 1, it is characterized in that: in step S4, described application program automatic connection of Bluetooth equipment is specially: the link setting up shared key between smart mobile phone and bluetooth equipment, the key of storage sends to described bluetooth equipment to match by described application program, if successful matching, then perform step S7.

4. method according to claim 1, it is characterized in that: in step S7, described application program automatic connection of Bluetooth equipment is specially: the link setting up shared key between smart mobile phone and bluetooth equipment, the key of acquiescence sends to described bluetooth equipment to match by described application program, if successful matching, then perform step S7; If match unsuccessful, the key that described application program changes acquiescence initiates pairing again, until number of attempt reaches preset value, interface is pointed out user match failure.

5. method according to claim 1, is characterized in that: described method also comprises step S8: described application program is selected according to user to disconnect the Bluetooth earphone equipment connected.

6. the device that between bluetooth equipment, one key establishes a communications link, described device is positioned on smart mobile phone, it is characterized in that: described device comprises:

Authority acquiring unit, for obtaining bluetooth authority, opens the Bluetooth function of described smart mobile phone, enables the bluetooth equipment of surrounding search the smart mobile phone with Bluetooth function;

Equipment search unit, searches all bluetooth equipments around for Bluetooth adapter, and the title of the bluetooth equipment searched and MAC Address is returned;

Judging unit, for judging whether the bluetooth equipment that there is " binding ";

First display unit, for when there is the bluetooth equipment of multiple " binding ", is presented on the screen of described smart mobile phone by the title of the bluetooth equipment of multiple " binding ";

First automatic linkage unit, during bluetooth equipment for " the binding " when existence anduniquess, be dynamically connected described bluetooth equipment certainly, or, according to the selection of user, the bluetooth equipment that the user that is certainly dynamically connected selects;

Second display unit, for when there is not the bluetooth equipment of " binding ", is presented on the screen of described smart mobile phone one by one by the title of the bluetooth equipment searched;

Second automatic linkage unit, for the selection according to user, the bluetooth equipment that the user that is certainly dynamically connected selects;

Voice data transmission unit, for after setting up the communication connection between smart mobile phone and bluetooth equipment, carries out the transmission of speech data.

7. device according to claim 6, is characterized in that: described bluetooth authority comprises BLUETOOTH and BLUETOOTH_ADMIN.

8. device according to claim 6, it is characterized in that: the described first automatic linkage unit automatic connection of Bluetooth equipment is specially: the link setting up shared key between smart mobile phone and bluetooth equipment, the key of storage sends to described bluetooth equipment to match by described application program, if successful matching, then set up the communication connection between smart mobile phone and bluetooth equipment.

9. device according to claim 6, it is characterized in that: the described second automatic linkage unit automatic connection of Bluetooth equipment is specially: the link setting up shared key between smart mobile phone and bluetooth equipment, the key of acquiescence sends to described bluetooth equipment to match by described application program, if successful matching, then set up the communication connection between smart mobile phone and bluetooth equipment; If match unsuccessful, the key that described application program changes acquiescence initiates pairing again, until number of attempt reaches preset value, interface is pointed out user match failure.

10. device according to claim 6, is characterized in that: described device also comprises: disconnect unit, disconnects for selecting according to user the Bluetooth earphone equipment connected.