RE: About OTA of Mesh 3.10

listenYes — Wed, 19 Jun 2019 07:59:04 GMT

Sorry, reply to you for so long!

It`s my new question.

https://devzone.nordicsemi.com/f/nordic-q-a/48756/about-dfu-of-mesh-3-10

RE: About OTA of Mesh 3.10

Marjeris Romero — Tue, 19 Mar 2019 14:53:50 GMT

Hi,

Mesh DFU and nRF5 SDK DFU are two different things. I recommend you look at the documentation about the Mesh DFU procotol here. To summarize:

Mesh DFU supports two modes

background DFU, that transfers the new firmware in the background while the application is running, when the transfer is done the application then flash the new firmware when ready.
bootloader DFU, in which only the mesh bootloader is running (no application running).

The Mesh DFU protocol use relay of data to neighboring devices when performing an update. Both the passive mesh devices and the devices receiving a transfer will relay all data packets, this method is much faster than passing the entire DFU transfer to each device individually (one-to-one).

But because of the throughput concerns in mesh we recommend using background DFU when possible, so your mesh network does not have to have a downtime while performing an update. If you find out you don't have enough flash available you can of course perform a bootloader DFU.

Best Regards,

Marjeris