bluetooth-lowenergy

问题 I have receive scan result with 62 bytes each and every time from ble device. Using below callback code to get scan result, I can able to get RSSI but not getting CRC. or What is the logic for getting CRC for one frame? Format of data from ble device like Packet Header,Advertising data,CRC,RSSI. how can get CRC from data or android ble module. public void onScanResult(int callbackType, ScanResult result) { byte[] data = result.getScanRecord().getBytes(); //get 62 byte array } How can get CRC

问题 What is the service, characteristics value (UUIDs) for step count in Bluetooth Low Energy? The corresponding pages for bluetooth docs does not list any for steps. How to calculate steps count? Does steps count devices use running speed and cadence service? Thanks. 回答1: Some devices does indeed use the Running Speed and Cadence service. You should be able to calculate the step count by dividing the "Total Distance" by the "Instantaneous Stride Length". Both of which are available in RSC

问题 After app open, and Press ON BLE Device. centralManagerDidUpdateState function is working. CBUUID *uuid = [CBUUID UUIDWithString:@"8A1FEA41-3A2F-7860-568D-2325D6C31C91"]; NSArray *services = [NSArray arrayWithObjects:uuid, nil]; NSDictionary *options = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:NO] forKey:CBCentralManagerScanOptionAllowDuplicatesKey]; [central scanForPeripheralsWithServices:services options:options]; Would not call to didDiscoverPeripheral: function. -(void

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 5 years ago . The new BLE peripheral mode introduced by Android 5.0 (Lollipop) won't be enabled on the Nexus 4, 5, or 7 (https://code.google.com/p/android-developer-preview/issues/detail?id=1570#c52), but will be enabled on the Nexus 6 and 9. Even though the Bluetooth 4.0 compliant chipsets in

问题 Is it possible, using corebluetooth framework, to detect if peripheral is bondable? Should I implement the failed to connect to delegate? 回答1: There is nothing at this time. With later versions of BLE, bonding information (GAP modes) is in the GAP profile, but not one bit of that information is available to you via CoreBluetooth. With the exception of some advertising data and limited scan response data, It only provides GATT information and below. You could read any desired characteristic

问题 I have connected to a bluetooth device. I am able to read charectristic using mGatt.readCharacteristic(getMiliService().getCharacteristic(uuid)); But I am not able to register indicate for a characteristic. What I tried boolean flag1 = m_Gatt.setCharacteristicNotification(bluetoothgattcharacteristic, flag); BluetoothGattDescriptor descriptor= bluetoothgattcharacteristic.getDescriptor(Helper.UUID_DESCRIPTOR_CLIENT_CHARACTERISTIC_CONFIGURATION); descriptor.setValue(BluetoothGattDescriptor

问题 I appreciate that this may have already been answered but I'm unable to find a solution that works for me. Tl;dr: How do make a function block? I have the following BLE-related code written in Kotlin for Android API 28. override fun onServicesDiscovered(gatt: BluetoothGatt?, status: Int) { for (gattService: BluetoothGattService in gatt!!.services) { for (gattChar: BluetoothGattCharacteristic in gattService.characteristics) { if (gattChar.uuid.toString().contains(ADC_SAMPLESET_0) &&

问题 I have a device that transmits data to my Android (4.4.2) over a BLE GATT characteristic. The device sends multiple 20byte packets per connection interval, where each packet has a sequence number. Lets say the device is sending 4 packets per connection interval, as shown... |sq1,sq2,sq3,sq4|sq5,sq6,sq7,sq8|.. I notice at the Android end, may calls to onCharacteristicChanged() are coming in like... |sq4,sq4,sq4,sq4|sq8,sq8,sq8,sq8|... Does Android support sending multiple packets per

问题 Has someone already figured out how to get BLE Beacons into a c++ desktop apps? I have some code from the following websites to get it done in c#: msdn sozial site and codefest.at post. Sorry, it's in german but the code is code but that'for C# and not c++ I also have the example from MS (msdn.microsoft.com/en-us/library/hh973459.aspx) how to use the WinRL For now I have the following code: #include "stdafx.h" #include <iostream> #include <Windows.Foundation.h> #include <wrl\wrappers

问题 I have used the raspberry pi to detect the ibeacons and gone through the tutorial provided by Radius Networks here. I made a small script that first turns on lescan and redirects output to /dev/null. Then it turns the hcidump on piping to the output to the script. The output shown by the script is slow. While the advertisement packets are transmitted in magnitude of milliseconds, the result however on the terminal is slow. consequently, the command keeps on showing new output even if you turn