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How to detect link lost with the CC1101

Jeffrey Westgeest
Intellectual 615 points

Dear Forum,

I am using 2 MSP430F5438A and 2 CC1101 to make a connection.

This is working with the examples given by TI.

At the moment I found out that the receiver can shutdown due to powerloss but the sender unit is always on.

The sender is no longer seeing the receiver when it comes back on.

I have to reset the sender to make the system work again.

The problem is that I can not find the option to detect that the link is lost in the documentation.

Does any one know of a white paper how to solve this?

Thank you for your reply.

Best regards,

Jeffrey

(This is a repost of the MSP430 forum, as I was told to take a look at this forum)

  • 0
    TI__Guru**** 317180 points

    You would need a two way system where the receiver sends an ack to the sender. If no ack is received assume that link is lost.

    But what do you mean by "The sender is no longer seeing the receiver when it comes back on." How does your sender "see" your receiver in your system?

  • 0 in reply to TER
    Intellectual 615 points

    Dear TER,


    I use the SMPL_Link function to create link.

    When I reboot the receiver and try using the SMPL_Link to make the link again.

    This then fails, in other words I do not get a link, but when I stop/restart the sender then it works again.

    So there are two things I am would like to know:

    1. is there some kind of SMPL_LinkLost function?

    2. How come the SMPL_Link is not working the second time?

    • do I need to unlink it first? (SMPL_Unlink)

    Thank you for your reply,

    Jeffrey