Is it possible to have a connection via L2CAP only?
Is it possible to have a connection via L2CAP only?
Some services, e.g. GAP (UUID 0x1800), are mandatory to have in BLE, and it is not possible to disable these in the SoftDevices provided by NordicSemi.
But what exactly do you want to accomplish? You don't have to use any of the GATT functionality if you don't need to.
periodic file transfer at 27byte payload/packet
periodic file transfer at 27byte payload/packet