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Polling theory of LPN

Hi all,

        I'm working with LPN demo with SDK for Mesh 3.1.0 recently. I want to implement a function that a lpn device can receive a response message as soon as it sends out a request command. So, this lpn device needs to trigger polling actively  in some particular situation, such as sending a command.But now, a lpn device shall send polling message periodically once it has established a friendship with a friend node,which is guaranteed by event scheduler . So, my question is whether I can use some ways to make lpn start polling actively? and if I do so, whether this operation could result in timing confliction with scheduler? If anybody has good ideas, please make a comment, thank you!

  

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