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CC2640 Max Connections & Slaves Question

Peyton Davari
Expert 1180 points
Other Parts Discussed in Thread: CC2640, CC2541

CC2640:

Regarding the new CC2640 I was hoping somebody could tell me what is the maximum number of slave devices a master can maintain a connection with at once?

I know that with the CC2541 the maximum number was 3. Is it possible to maintain a connection with 4,5, 6, or more devices at a time with the new CC2640?

 

Any comments on this would be appreciated, thanks!

  • 0
    TI__Mastermind 34660 points
    This depends on the amount of available RAM and the role (master / slave) of each connection. We have successfully connected 8 with a controller-only build and a star network.
  • 0 in reply to Tim C
    Expert 1180 points
    Thanks for the response Tim.

    Could you elaborate on what you mean by controller only build? 8 is a huge improvement, so I'm hoping this is true!

    What I am trying to figure out is how many slaves can I maintain an active connection with using one master device. I know due to RAM limitations it was only 3 on the CC2541.

    -Peyton
  • 0 in reply to Peyton Davari
    TI__Mastermind 34660 points
    The controller-only build does not include a host, thus saving a lot of RAM (and flash). It is a network processor project where commands are sent from another MCU. We have not done any testing with embedded projects (that include full host+controller) since this will entirely depend on the amount of RAM the application is using for other cases.

    If you are only acting as a central which it sounds like you are doing, this saves a lot of RAM and you would probably be able to get at least 5 or 6.
  • 0 in reply to Tim C
    Expert 1180 points
    Hmm okay, I know I was asking a lot of general questions that require more detail for a more detailed answer but from what you've told me I think that helps a lot and I got what I needed to know.

    Thanks for the help!