How to change BLE device name from iOS?

Question

I want to change BLE device name within the iOS app.

Currently I have done these things:

1. Scanned
2. Connected to the BLE which I want to change
3. Discovered it's services & characteristics

But then to change it's name I am not sure, what I can do? I have checked other questions but which doesn't guarantees to help.

It requires to pass a new name with a "name" parameter to the device.

Currently, I am doing this thing sure it;sa crap:

[peripheral writeValue:@"new name of the device" forCharacteristic:[peripheral.services firstObject] type:CBCharacteristicWriteWithResponse];

I am lacking with knowledge:

here we're not passing any parameter, did we?

Please help.

Answer 1

You should refer the document or check with the manufacturer if they allow overriding the peripheral name. If allowed, then at what location.

Answer 2

You need to read the documentation for writeValue because that isn't even close to what the actual parameters are supposed to be.

1. Value is supposed to be NSData, not a string. Call dataUsingEncoding: on your string and pass in the correct encoding value (likely ascii or utf8: check your device documentation).
   2. Characteristic is a CBCharacteristic but you are passing in a CBService