All Questions
Tagged with bluetooth-lowenergy objective-c
276
questions
0
votes
2
answers
227
views
How can I refresh BLE Services while connected in iOS or B4i
I'm developing an app that has to interface with an BLE (Bluetooth Low Energy) device, that I also have to make.
I use B4i (from B4X suite) to develop the iOS app, but it support also native Objective-...
0
votes
0
answers
116
views
When wrong PIN CoreBluetooth service trigging connected ok
Currently implementing pairing functionality from the app to BLE device using CoreBluetooth framework.
When entering wrong PIN getting delegation, that connection established. As well discovering ...
- 15.8k
0
votes
0
answers
74
views
How to interact with IOT Devices using BLE that does Request & Response with CheckSUM Logics in iOS
I am using BLE with IOT Device. I need to send query request & response to IOT Device as below
The following is the typical query command syntax sent to device from the iOS
<STT><NOO>&...
- 5,357
0
votes
1
answer
173
views
No visible @interface for ***** declares *****
I am new to Objective-c. I am using swiftui to make my app.
But need to implant objective-c code for BLE. all work until I get this code
in .h file
- (void) setPackageBroadcast: (BOOL) broadcast;
and ...
- 31
2
votes
1
answer
1k
views
Get list of currently connected devices to my iPhone
I want to get a list of the currently connected Bluetooth/BLE devices to my device.
I tried to lock in Core Bluetooth documentation, but didn't find something that can help me with the task.
Is it ...
- 4,079
2
votes
1
answer
699
views
How to change CBAdvertisementDataLocalNameKey value from objective C?
I have multiple accelerometer sensors and I need to update the advertisementData name (CBAdvertisementDataLocalNameKey) of the each sensors for the first time of starting to use that sensors. What is ...
- 23
4
votes
0
answers
315
views
BLE Connection time much higher on iPhone 11 running iOS 14.4 as compared to iPhone 6 running iOS 12.4
I am trying to make a BLE connection from iOS devices with a xGM210P dev board acting as a peripheral .I am able to make successful BLE connection with my iOS source code but there is a huge ...
- 527
2
votes
1
answer
6k
views
BLE: How to get correct service UUID and characteristic UUID?
I am a new in Bluetooth connection and I want to add second device in my iOS project. I already have one device, and the new device is very similar with first one, but little bit deferent. I have one ...
- 31
0
votes
2
answers
425
views
Objective-C warning: Class 'ViewController' does not conform to protocol 'CBPeripheralManagerDelegate'
I'm trying to create an Obj-C, CoreBluetooth virtual peripheral app and get this warning.
//
// ViewController.h
// sim_backend_empty3
//
//
#import <UIKit/UIKit.h>
#import <CoreBluetooth/...
- 8,209
1
vote
0
answers
695
views
Slow response when writing value to characteristic for BLE (Objective C)
I'm trying to update a characteristic on a BLE device using Objective C and CoreBluetooth. It works (the write causes a LED to turn on on the device, so I can see when the update occurs), but the ...
- 462
0
votes
0
answers
993
views
IOS BLE write characteristic Issue
I have a bluetooth device with bluetooth dual type, While reading data from device there is no problem, but when i am using CBCharacteristicWriteWithResponse or CBCharacteristicWriteWithoutResponse ...
- 13
1
vote
1
answer
210
views
Why my iOS device doesn't scan for advertising extensions?
I am trying to scan for advertising extensions, but them aren't discovered by scanner. I am using iPad A2152 which supports Bluetooth 5.0. Of course my device has installed iOS 13. I have written code ...
- 112
2
votes
1
answer
929
views
iOS BLE Characteristic Control Point Write - ATT Error
I'm having trouble performing a write on a control point characteristic.
Perhaps I'm providing an erroneous value, as I don't fully understand the nature of a control point. I've noted some of the ...
- 43
0
votes
1
answer
46
views
What is equant Class to "NSScanner" Class in Android?
I am working on one bel project on android and converting the one application already developed in iOS I am stuck one bunch of lines and didn't find equant code in java
I need to convert the below ...
- 53
0
votes
0
answers
203
views
How to invoke indication & notification as peripheral iOS
What API call do I use to invoke either indication or notification if I setup iOS device as peripheral?
For instance lets say I setup characteristics with indication & notification properties ...
- 239