Increasing MTU size from Peripheral and Observing change in Android/iOS

Hi,

Can you provide the sniffer log? Are you using data length extension feature?

Hello Lee,

Below image is what obtained in sniffer log.

May I know of how to enable Data Extension Feature in stack 2.2.1

I could not find reference of how LL_LENGTH_REQ and LL_LENGTH_RSP can be used as mentioned in BLE Software developer's Guide.

Thanks in Advance !

Can you attach full log?
The procedure of enabling data length extension can be found in our software developer's guide section 5.6

sniffer_log.psd

Attached .psd format of the sniffer log

Yes Lee, I verified the BLE software guide. But I am not receiving any request from Smartphone for updating larger payload size.

Is there a way this can be done from Application (peripheral ) side ?

Thanks in Advance !

Hello,

Your sniffer log does not show any BLE connection occurring, just Adverting. DLE feature exchange occurs in a connection.
Not all phones support this feature, only newer ones released in 2016 and higher end models fully support DLE.

Best wishes

Hello JXS,

Thank you for your reply.

I tried with higher end model ( with Android 6.0 ) released in 2016, but I still face the same issue.

Other than adding MAX_PDU_SIZE as a preprocessor symbol during Application compilation, are there any other things to be handled from Application / Stack ?

Thanks in Advance !