CC2650: How do I request an MTU exchange (ATT_OP_MTU_REQ ) from the peripheral/server?

TimO

Part Number: CC2650

I'd like to use BT4.2 Length Extension on my peripheral. I think I could call GATT_ExchangeMTU() from a central/client, but I don't see a way to request that from the peripheral in the BLE SDK. Any recommendations?

over 8 years ago

0 Tom Kopriva over 8 years ago

TI__Mastermind 20480 points

TimO, see the software developer's guide on this. Only the GATT client (e.g central) can initiate an MTU exchange procedure.

0 TimO over 8 years ago in reply to Tom Kopriva

Prodigy 50 points

Thanks. I was getting MTU and DLE confused. The throughput_example_central and throughput_example_peripheral on github were helpful. It seems that MTU is exchanged once at the beginning of the connection, but that HCI_LE_SetDataLenCmd() can be called later from either side. At least, that's my working theory...

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CC2650: How do I request an MTU exchange (ATT_OP_MTU_REQ ) from the peripheral/server?