Android Question BLE Peripheral - advertising data

[jvetterli]

Playing around with the BLE peripheral library, I'm wondering if it's possible to change the advertising data. When doing a BLE scan with a RedBear Duo, it shows me:

reportCallback:
The advEventType: 0
The peerAddrType: 1
The peerAddr: 64 D6 55 74 E2 D9
The rssi: -55
The advertising data: 2 1 1A E 9 42 34 41 50 65 72 69 70 68 65 72 61 6C 2 A F9 3 3 1 0
The length of Complete Local Name : D
The Complete Local Name is : B4APeripheral

Local name can be changed, but the advertising data stays the same with different phones.

 

[Erel]

It is currently not possible to change it.

It will be simple to add an option for manufacturer specific data if anyone needs it.

 

[jvetterli]

Thanks for your quick reply Erel, I would be thankful if you could add such an option

 

[Erel]

I've sent you a new version (v1.10). Please try it.

You can set the manufacturer data with:

BlePeripheral2.ManufacturerData = CreateMap(123: "this is my data".GetBytes("utf8"), 124: Array As Byte(1, 2, 3, 4))

You need to set it before you call Start.

 

[jvetterli]

Hi Erel, I'm sorry for the late reply, thanks for the new version, didn't have a chance to try until today.
Unfortunately it doesn't work, if I set the manufacturer data, BLEperipheral2 doesn't seem to work anymore (without showing any errors in the log view), as the two phones I'm testing with, aren't showing up anymore.

 

[Erel]

Are there any messages in the unfiltered logs?

Can you post the code?

 

[jvetterli]

I don't see any abnormalities in the log, I've attached them, BLEnew.txt for the version including the manufacturer-date.

I'm using your BlePeripheral sample and only changed Manager_StateChanged with two variations:

Private Sub Manager_StateChanged (State As Int)
    If State <> manager.STATE_POWERED_ON Then
        ToastMessageShow("Please enable Bluetooth", True)
        NotAvailable = True
    Else
        peripheral.Initialize("peripheral", manager)
        
        'peripheral.ManufacturerData = CreateMap(123: "this is my data".GetBytes("utf8"))
        peripheral.ManufacturerData = CreateMap(123: "this is my data".GetBytes("utf8"), 124: Array As Byte(1, 2, 3, 4))
        
        If peripheral.IsPeripheralSupported = False Then
            ToastMessageShow("Peripheral mode not supported.", True)
            NotAvailable = True
        Else
            peripheral.Start("B4APeripheral")
            Wait For Peripheral_Start (Success As Boolean)
            Log("Peripheral started successfully? " & Success)
        End If
    End If
    SetState(False)
End Sub

 

[Erel]

The problem is with the id that is probably reserved.

This works:

per.ManufacturerData = CreateMap(0x0700: "abc".GetBytes("utf8"))

 

[jvetterli]

Don't know what I do wrong, but it still doesn't show up, I've attached the unfiltered log, maybe it will help.

 

[Erel]

The above code worked for me in a small example. I've tested it on Nexus 5X. I used an iPhone app to scan for BLE and read the advertising data.

 

[jvetterli]

Pretty strange, I've tested with a Samsung Note4 and Blackview A7 without success. As soon as I comment the ManufacturerData out, the phone will show up on BLEscanner