bluetooth 4 0 ble

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A rough explanation of the communication between Android and Bluetooth Ble, android Bluetooth ble

code can be clearly viewed and conveniently called. The tool class is BleManager. Private effecthadapter mblustmthadapter; Private effecthdevice mblustmthdevice; Private effecthgatt mblustmthgatt; Private boolean isScanning = false; // The objects defined above are useful in the following methods. (We recommend that you read the articles no matter who you are reading, first, we should familiarize ourselves with the meaning and basic functions of the above or some

[Bluetooth Low-Power BLE] Introduction, low-power ble Introduction

[Bluetooth Low-Power BLE] Introduction, low-power ble Introduction As the blog directory, set the topic first, and add the link after writing! I. Basic USE OF THE CC254X Chip 1. Bluetooth Low-Power BLE controls GPIO to light LEDs 2. Use of

android-Low power Bluetooth (BLE)-Client (host/center device) and server (slave/peripheral)

[" + descriptor.getuuid () + "]:n" + response); } @Override public void Ondescriptorwriterequest (final bluetoothdevice device, int RequestID, Bluetoothgattdescripto R Descriptor, Boolean Preparedwrite, Boolean responseneeded, int offset, byte[] value) {//Get data sent by the client Stri ng valuestr = arrays.tostring (value); LOG.I (TAG, String.Format ("ondescriptorwriterequest:%s,%s,%s,%s,%s,%s,%s,%s", Device.getname (), Device.getAddress ( ), RequestID, Descriptor.getuuid (), Pre

Android4.3 bluetooth ble Preliminary

First, Key concepts:Generic Attribute profile (GATT)through BLE connection, read and write the profile General specification of the attribute class small data. All BLE application profiles are now based on GATT. Attribute Protocol (ATT)GATT is based on the ATT protocol. The ATT has been specifically optimized for BLE devices by using as little data as possible du

"Turn" Android4.3 Bluetooth ble Preliminary

Original URL: http://www.cnblogs.com/savagemorgan/p/3722657.htmlFirst, Key concepts:Generic Attribute profile (GATT)Through BLE connection, read and write the profile General specification of the attribute class small data. All BLE application profiles are now based on GATT.Attribute Protocol (ATT)GATT is based on the ATT protocol. The ATT has been specifically optimized for

Android4.3 bluetooth ble Preliminary

First, Key concepts:Generic Attribute profile (GATT)Through BLE connection, read and write the profile General specification of the attribute class small data. All BLE application profiles are now based on GATT.Attribute Protocol (ATT)GATT is based on the ATT protocol. The ATT has been specifically optimized for BLE devices by using as little data as possible dur

Bluetooth ble in Android 5.0

, authentication and properly end) is only 3ms. Standard Bluetooth technology requires hundreds of milliseconds to complete the same connection cycle. Again, the longer the wireless is switched on, the more battery energy is consumed. Ii. Key Concepts: (1) Generic Attribute profile (GATT) Profile general specification for reading and writing attribute-class data through BLE

[Yueqian_scut] Bluetooth anti-loss principle, implementation and Android BLE interface programming

interface programmingThe Androidble interface is provided above the android4.3 version.1. Determine if the current system supports BLEGetpackagemanager (). Hassystemfeature (Packagemanager. Feature_bluetooth_le)Returns true representation support.2. Get the Bluetooth adapter classUsers use the BLE API through a unified Bluetooth adapter class Bluetoothadapter.G

Share the Android Bluetooth 4.0 (BLE) Development solution _android

Byte to hexadecimal string public static string bytes2hexstring (byte[] bytes) { string ret = ' "; for (byte abyte:bytes) { String hex = integer.tohexstring (Abyte 0xFF); if (hex.length () = = 1) { hex = ' 0 ' + hex; } RET + hex.touppercase (Locale.china); } return ret; } /** * Converts a 16-binary string to a byte array * * @param message * @return byte array /public static by

Android Bluetooth 4.0 BLE

device runs properly and needs to determine if the device supports BLE feature when the code is running: if (! Getpackagemanager (). Hassystemfeature (Packagemanager.feature_bluetooth_le)) {   // does not support ble finish ();}(1) Implement the BluetoothAdapter.LeScanCallback interface, the BLE device search results will be returned through this callback

WeChat mini-app-Ble Bluetooth

This article describes how to implement Ble Bluetooth, a small program. The source code download is provided, which has good reference value. Next let's take a look at the small Editor. This article mainly introduces the implementation of Ble Bluetooth, a small program. The source code download is provided, which has g

Android Bluetooth Low energy (BLE) writecharacteristic delay callback

;}};Privatevoidwritecharacteristic(){.....mgattcharacsetintensity.SetValue(Data);mgattcharacsetintensity.Setwritetype(bluetoothgattcharacteristic.Write_type_default);Mbluetoothgatt.writecharacteristic(mgattcharacsetintensity);return;} Edit:i has a comparison with iPhone (a ble transfer data app from AppStore), the BLE transfer data are very quick (less t Han 0.5 sec), so impressive. How can we work around t

Android ble Bluetooth 4.0 summary One

This article describes the android BLE Bluetooth 4.0, that is, API level >= 18, and Bluetooth 4.0 mobile phone can be used, if the phone system version API level First send the official demo, interested in the past to see: http://developer.android.com/guide/topics/connectivity/bluetooth-le.html. Android system more tha

Android ble Bluetooth 4.0 Summary

This article describes the android BLE Bluetooth 4.0, that is, API level >= 18, and Bluetooth 4.0 mobile phone can be used, if the phone system version API level first send the official demo, interested in the past to see: http://developer.android.com/guide/topics/connectivity/bluetooth-le.html. Android system more tha

Android Bluetooth 4.0 (BLE) Development ibeacon Preliminary

+ -]); LOG.D ("BLE", Bytestohex (Scanrecord)); LOG.D ("BLE","Name:"+ Ibeaconname +"\nmac:"+ Mac +"\nuuid:"+ UUID +"\nmajor:"+ Major +"\nminor:"+ minor +"\ntxpower:"+ Txpower +"\nrssi:"+ Rssi); LOG.D ("BLE","Distance:"+calculateaccuracy (Txpower,rssi)); } } };Static Final Char[] Hexarray ="0123456789ABCDEF". ToCharArray ();Private StaticStringBytestohex

Bluetooth 4.0/ble protocol Stack Learning notes (i)

 Bluetooth 4.0/ble protocol Stack Learning notes (i) Required Software tools: 1. BLE protocol stack (ble-cc254x-1.4.0) 2. IAR development software (IAR Embedded Workbench8.20.2) Note: The 1.4.0 protocol stack uses the 8.20.2 version of IAR, the 1.3.2 protocol stack, etc., using the 8.10.4 IAR version.

Android Bluetooth 4.0 (BLE) Development ibeacon Preliminary

The ibeacon module used in this article is April Beacon, as to what is ibeacon. This article does not explain, the specific please self-examination. The information that a April beacon carries is as follows 0201061AFF4C0002159069BDB88C11416BAC3F33468C2788A3044B0378C60C09417072696C426561636F6E051250002003020A0000000000000000000000 What do you mean, exactly? Bytes the follow in first ad STRUCTURE01 flags AD type06 Flags Value 0x1A = 000011010 bit 0

Bluetooth Low-Power BLE: Controls GPIO to light LEDs and blegpio

Bluetooth Low-Power BLE: Controls GPIO to light LEDs and blegpio This section describes the simplest and most basic things. The ios operation of the CC2540 uses the PORT as the GPIO. If you don't talk much about it, let's look at it. 1. Hardware Circuit The most simple hardware circuit is to use a GPIO to control the LED light. Since GPIO is used as the output, the GPIO mode is not required. It is quite si

Android Bluetooth connection to send and receive data (excluding BLE)

ArrayList // Optional reddevicenames = new ArrayList Optional reddeviceaddress = new ArrayList Set If (repeated reddevices. size ()> 0 ){// Parse them one by oneFor (incluthdevice devices: inclureddevices ){// Put it into the setPairedDeviceNames. add (devices. getName () + "\ n"+ Devices. getAddress ());PairedDeviceAddress. add (devices. getAddress ());}// Save informationNameAndAddress. add (pairedDeviceNames );NameAndAddress. add (pairedDeviceAddr

Bluetooth Low-Power ble: Controls gpio to light LEDs

LEDs to OFF. // Set LED GPIOs to outputs. LED1_DDR |= LED1_BV;#if (!defined HAL_PA_LNA !defined HAL_PA_LNA_CC2590) LED2_DDR |= LED2_BV;#if (!defined CC2540_MINIDK !defined HAL_BOARD_CC2540USB) LED3_DDR |= LED3_BV;#endif#endif#if defined BLINK_LEDS HalLedStatusControl.sleepActive = FALSE; // Initialize sleepActive to FALSE.#endif#endif Macro definition /* 1 - Green */#define LED1_BV BV(0)#define LED1_SBIT

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