Myujth

We used corebluetooth framework for fetch data from BLE device. We scan BLE device and establish a connection. We get services of BLE devices and get characteristics of specific services.

Set indication value of characteristics using setNotifyValue method after set indication value read descriptor value of descriptor.

We got data from our Bluetooth successfully in didUpdateValueFor() method. But we missing some data from that.

Our Bluetooth send 244 bytes at one time but in iOS, we get only 182 byte at one time. So missing some value while downloading data from that.

We used below code for above same. Please give us a solution to this. How to get full data from the Bluetooth device or in iOS corebluetooth framework to give any specific number of bytes?

func peripheral(_ peripheral: CBPeripheral, didDiscoverCharacteristicsFor service: CBService, error: Error?)
 for Characteristics in service.characteristics!
 if aCharacteristics.uuid.isEqual(CBUUID(string: “XXXXX-XXXXX-XX-XXXX”)) 
 peripheral.setNotifyValue(true, for: aCharacteristics)
 
 
 

func peripheral(_ peripheral: CBPeripheral, didDiscoverDescriptorsFor characteristic: CBCharacteristic, error: Error?) 

 for disc in characteristic.descriptors!
 if disc.uuid.isEqual(CBUUID(string: “XXXXX-XXX-XXXXXX”))
 peripheral.readValue(for: disc)
 

 
 


func peripheral(_ peripheral: CBPeripheral, didUpdateValueFor characteristic: CBCharacteristic, error: Error?)
 let nsdataStr = NSData.init(data: characteristic.value!)