Bluetooth 1.2 vs 1.1:
1. Adaptive Frequency Hopping (AFH ):Adaptive Frequency Hopping TechnologyThe main function is to reduce interference problems between Bluetooth products and other wireless communication devices.
2. Extended synchronous connection-oriented links (ESCO ):Extended synchronous link-oriented channel technologyIt is used to provide audio transmission with high QoS, and can further meet the
the local Bluetooth device is allowed to be detected by other nearby bluetooth devices, enable the bluetooth device // settings so that your mobile phone is detected by other Bluetooth devices // if you need to confirm the operation, you do not need to obtain the underlying Blueto
; mbluw.thadapter. startLeScan (mLeScanCallback);} else {mScanning = false; mbluw.thadapter. stopLeScan (mLeScanCallback );}...}...}
If you only want to search for peripheral devices of the specified type, you can replace them with startLeScan (UUID [], BluetoothAdapter. and provides an array of UUID objects for the GATT service supported by your application.
The following is an implementation of javasthadapter. LeScanCallback, which is an interface used to receive BLE search results:
Private L
); // descriptor write}Once encountered the pit
Bluetooth timed out on a consecutive time
Workaround:Reconnect in the appropriate method on the broadcast
PrivateFinal Broadcastreceiver Mgattupdatereceiver= NewBroadcastreceiver () {@Override Public voidOnReceive (context context, Intent Intent) {finalStringAction=Intent.Getaction ();if(Bluetoothleservice.action_gatt_connected.equa
1. Modify the visibility of the local Bluetooth device
2. Scan the available Bluetooth devices around
Eg:
I. configuration file adroidmanifest. xml:
Ii. layout file: Main. xml:
3. mainactivity:
Import android. app. activity; import android. bluetooth. export thadapter; import android. bluetooth. export thdevice;
Document directory
References
The previous two Articles respectively described how to use Windows Embedded Source Tools for Bluetooth and 32feet. NET for Bluetooth development under. NET Compact Framework. The links are as follows:Windows Embedded Source Tools for Bluetooth development under. NET Compact Framework32feet. NET for
describe the GATT services that your application supports.The following is a specific implementation of the interface function Bluetoothadapter.lescancallback for transmitting BLE scan results:Private Ledevicelistadapter mledevicelistadapter;...//Device scan callback.private bluetoothadapter.lescancallback Mlescancallback = New Bluetoothadapter.lescancallback () { @Override public void Onlescan (final Bluetoothdevice device, int rssi,
Onlescan (final Bluetoothdevice device, int rssi, byte[] scanrecord) { runonuithread (new Runnable () { @Override public void Run () { mledevicelistadapter.adddevice (device); Mledevicelistadapter.notifydatasetchanged ();}});} ;Note: As described in the Bluetooth documentation, you can only search for a BLE device or search for a tradition
How to Use Android Bluetooth (Bluetooth details) and Android bluetoothI. Communication between bluetooth devices consists of four processes.
Configure a bluetooth device to search for devices that may match in the LAN to connect to data transmission between devices.
Ii. completion of detailed programming
1. Activate
phone.Four. Scan for paired Bluetooth devices (2)4.1 Getting Bluetoothadapter objects4.2 Determine if Bluetooth is present in the current mobile device4.3 Determine whether Bluetooth is turned on in the current mobile device4.4 Get all Bluetooth device objects that have been pairedThe implementation code is as follows
(1) If you want to use the Bluetooth Android phone, you need to add Bluetooth access to the Androidmanifest file.Note: Permissions should be added to the Androidmanifest file (2) to determine if there is a Bluetooth device that can be used, if there is to determine whether the Bluetooth device is turned on, if not open
How to enable win10 Bluetooth? How to connect to win10 Bluetooth ?, Enable win10 Bluetooth connection
How to enable win10 Bluetooth? How to connect to win10 Bluetooth? Where? Many laptops use the Bluetooth function, but win10 is
Three major driversProgram/Manage software
Widcomm and IVT are independent third-party Bluetooth drivers. Most of the Bluetooth adapters on the market use these drivers. Microsoft has built-in Bluetooth drivers and software in Windows XP SP2, but their functions are relatively weak. The three Bluetooth drivers and man
system. Of course, you can also specify it yourself, but this is really unnecessary, at least I don't need it. Then, check whether the Bluetooth of the mobile phone is enabled. If not, enable. Then we can set the visible time for the bluetooth device of the mobile phone to be customized.After completing these necessary settings, we can officially start communicating with the
on, and if not, turn it on by the Enable () method. Then we set the mobile phone Bluetooth device visible, the visible time can be customized.With these necessary settings in place, we can formally start communicating with the Bluetooth module:public class Comminuteactivity extends Activity {private bluetoothreceiver receiver; Private Bluetoothadapter Bluetoothadapter; private listTo communicate with
bluetooth device (2)
4.1 obtain the thadapter object
4.2 determine whether the current mobile device has Bluetooth
4.3 determine whether Bluetooth is enabled on the current mobile device
4.4 obtain all paired bluetooth device objects
The implementation code is as follows:
Mainactivity:
Import Java. util. iterator;
Solution One, Bluetooth can not be used after updating Bluetooth driver
1. As shown in the following illustration, we go to the computer Control Panel and then find "Add Device".
2. As shown in the following illustration, we adjust to the search status (here, for example, the mobile phone).
3. Then click "Next" as shown in the following figure.
4. The Verification code
Headset Principle Bluetooth technology picture 11features of Bluetooth technology1.1Bluetooth Protocol Architecture The whole Bluetooth protocol architecture can be divided into three parts: the underlying hardware module, the intermediate protocol layer and the high-end application layer. The Link Management layer (LMP), the baseband layer (BBP), and the
) {sactivity=activity; Cocos2dxhelper.addonactivityresultlistener ( This); }Bluetooth on, need to wait for user feedback Public Static voidOpenbluetooth () {Bluetoothadapter adapter=Bluetoothadapter.getdefaultadapter (); if(!adapter.isenabled ()) {Intent Intent=NewIntent (bluetoothadapter.action_request_enable); Sactivity.startactivityforresult (Intent, Enable_request_code); } }Callback after user feedback, Openrequesthandler This function i
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