ble transmitter

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

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

This article is from http://blog.csdn.net/hellogv/, the citation must be noted!The last time we talked about the communication between the Android phone and the BLE terminal, the most common ble terminal should be the ibeacon base station advocated by Apple. Ibeacon technology is based on BLE, which is characterized by the broadcast of external messages, mobile p

This article is from http://blog.csdn.net/hellogv/ , the citation must be noted! The last time we talked about the communication between the Android phone and the BLE terminal, the most common ble terminal should be the ibeacon base station advocated by Apple. Ibeacon technology is based on BLE, which is characterized by the broadcast of external messages, mobile

As the accessory of mobile communication, choose Traditional Bluetooth (Classic BT) and low power consumption Bluetooth (BLE) to compare and discuss the process; First clear our function is to use mobile phone with the attachment of communication, to achieve mobile viewing status (data Flow direction: Accessories-> mobile phone), and control accessories (data flow direction: Mobile phone-> accessories). The communication data has small data from the e

Original URL: Http://stackoverflow.com/questions/24865120/any-way-to-implement-ble-notifications-in-android-l-previewThis question are not on Android Notificatinos, but BLE notifications (as the title may hint)I have got basic BLE peripheral mode working on Android-lIs there an any-to-implement BLE notifications in And

+ -]); 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

Intelligent Medical products, for the BLE solution; The overall structure is as follows:Noun definitions:Box: Hardware based on android4.3 or above, need to support WiFi, ble Mobile: Android/ios mobile phone, users use server: Cloud server, box and mobile phone through HTTP for data interactionScenario requirements address the following issues:The box is based on the Android system, the Android system

BrieflyWired communication, is directly connected with the cable, and then the length of the distance, some will need to load the wave, the signal may be modulated by different modulation mode. Wireless communication is the same, but the transmission of the signal is through the radio frequency, through a certain frequency band, the wireless channel modulation, the data sent out.BLE physical channelIn the physical layer section mentioned the BLE physi

ble single-mode chip, belongs to smart, so only and smart ready, smart connection and communication, is incompatible with traditional Bluetooth. At the same time support BR and BLE devices become dual-mode equipment, the current general mobile phone using Bluetooth chip are dual-mode. I use the mobile phone Bluetooth hardware is support BLE, but because the syst

BLE data Application Note-Continuously updated BLE document book maker Bluetooth 4.0Divide single mode with dual mode.Single mode can only be transmitted with BT4.0 to each other (not compatible with 3.0/2.1/2.0);D ual mode can be backwards compatible with BT4.0 transmission or 3.0/2.1/2.0 transmissionUltra-low peak, average, and Standby mode power dissipation with enhanced coverage for up to 60 me

Original URL: http://bbs.csdn.net/topics/390882717?page=11. I have a timer in my own program to go to readcharacteristic, each time read can be successful, but in the process after the call writecharacteristic found that the BLE device did not receive the set of data, Do not perform oncharacteristicwrite this callback, put the timer off do not execute readcharacteristic, only perform writecharacteristic, you can set the success, You can also receive o

Dsads1. OverviewHCI supports four types of grouping: Command group commands Packet Asynchronous data grouping asynchronous Packet Synchronous Data Packet Events Group Event Packe The grouping type is a byte value before the HCI group. The packet type has the following values: Packet Packet Type command 1 asynchronous Data 2 synchron

This is a bug that bothered me for a long time, I downloaded various code, cut it, and compared to my own code found, currently resolved but do not know why.Bug Description: The Centralmanagerdidupdatestate proxy method does not automatically callback when the Cbcentralmanager agent is set to the current controller.Paste the correct code first, you can perform to print.#import "ViewController.h"#import@interfaceViewcontroller () @property (nonatomic, strong) Cbcentralmanager*Mgr;@end@implementat

BLE-NRF51822 tutorial 5-static password settings NordicBLE Contact Group 498676838This lecture introduces some related theoretical knowledge about pairing and describes how to set a "static password ". The program is a uart demo Based on sdk9.0 In addition, the mobile app used for testing is lightblue in IOS. The correct statement here should be a pair code, not a password. Enter this pair code as an optional part of the pairing process. Before intr

In a BLE development project, I use TI's CC2541 bluetooth ble SoC, in order to prevent the master-slave device connection disconnection data loss, the hardware added an EEPROM, when the Bluetooth connection, through the notify to the host, but when the Bluetooth connection is disconnected, The collected data is stored in the EEPROM (I²C), in order to achieve this, you need to get the Bluetooth connection st

 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. BLE protocol s

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 than 4.3, mobile phone support Bluetooth 4.0, with search, pairing, connection, Discovery service and eigenvalues, disconnection and other

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 than 4.3, mobile phone support Bluetooth 4.0, with search, pairing, connection, Discovery service and eigenvalues, disconnection and other

BrieflyBLE physical layer, may do IC or plate-pole hardware RF testing will be more concerned. is hardware-level.Frequency bandwidth and channel allocationBLE works in the 2.4 GHz ISM band 2400-2483.5 mhz,ism Band is common and does not require licensing for use in research, medical and other fields. BLE uses 40 RF channels and the channel-to-frequency relationship is as follows:2402 + k * 2 MHz (k = 0, ..., 39)Remaining featuresTransmit Power:Modulat