Packets Size less than MTU size

[dayizhang]

Hi. I am using nrf52840 with Softdevice 16.0.0.

I set the maximum size to 247 bytes. But I probably only need 68 bytes per packet.

Should I reduce my MTU size to 71 or I can keep 247 bytes?

[Vidar Berg]

Hello,

You can keep it at 247 bytes if you want. The drawback is that the Softdevice will require more RAM, but that should not be a problem if you have enough RAM to spare.