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Posted to dev@mynewt.apache.org by will sanfilippo <wi...@runtime.io> on 2017/01/11 22:14:15 UTC

Data Length Extension in Nimble

Hello:

In order to take full advantage of Data Length Extension the user should set the following syscfg values to 251.

BLE_LL_MAX_PKT_SIZE
BLE_LL_CONN_INIT_MAX_TX_BYTES

Both of these values should be set to 251 in order for both transmitted and received PDU’s to possibly be as large as 251 bytes. If only the LL_MAX_PKT_SIZE is 251, received PDU’s can be as large as 251 but transmitted PDU’s will only be as large as CONN_INIT_MAX_TX_BYTES.

Of course, the host can always change things by using the LE_Set_Data_Length command.

Enjoy