Trying to eliminate 802.15.4 ACKs in OpenThread communications using nRF52840 boards

[Gordon Wallace]

I'm using an nRF52840 Adafruit Feather Sense to communicate with a program on my computer over an OpenThread network.  My computer is using an nRF52840 DK board as a network co-processor.  I'm trying to reduce network traffic as much as possible, and I'd like to stop 802.15.4 ACKs from being transmitted when the DK NCP receives messages from the Sense.  Is there a way to keep 802.15.4 messages from being acknowledged?  Maybe an option that can be set in prj.conf?  I'm using the nRF Connect SDK version 1.5.0.  Thanks for any insights anyone might have.

[Charlie]

Hi Gordon,

There is no configuration option to disable 802.15.4 ACK message, because the ACK message is required by the OpenThread stack.

The thread examples on NCS use nRF IEEE 802.15.4 radio driver as L2 layer as explained on OpenThread integration. The driver provides Auto ACK management API to handle sAckFrame generated by OptenThread API. You can check NCS\v1.5.0\modules\lib\openthread\examples\platforms\nrf528xx\src\radio.c to see how sAckFrame used by OptenThread.

Best regards,

Charlie

[Gordon Wallace]

Got it, thanks Charlie