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Max Nwk Discovery Request results

RedRat
Prodigy 140 points

Hello.


In our project we're using the Network Processor. We are using RCN_NLME_DISCOVERY_REQ to list available devices, however this is limited to only 10 results before ending in an error.

I've found in rcn_nwk.h this define:

#define RCN_CAP_NODE_DESC_TABLE_SIZE  10 // determines maximum number of discovered events

However I can't see this being used anywhere in the source. Will increasing this actually increase the maximum number of results?


Thanks,

Red.

  • 0
    TI__Mastermind 20480 points
    Hi Red,

    RCN_CAP_NODE_DESC_TABLE_SIZE is used with TI's RF4CE stack library, so no, this is not something that can be changed without recompiling the library. Are you receiving an error when issuing this command?
  • 0 in reply to Tom Kopriva
    Prodigy 140 points

    Hi Tom,

    That's a shame.
    Yes, after 10 results I receive RTI_ERROR_DISCOVERY_ERROR code (0xB7).

    Is it possible to get a library version with a greater maximum; our product will be used in a test environment with a lot of STBs.

    Thanks,

    Red

  • 0 in reply to RedRat
    TI__Expert 6315 points

    Hi RedRat,

    The number of you devices you can discover is not necessarily the same as the number of devices you can be paired with simultaneously. The latter is a limited to 10, and defined by RCN_CAP_NODE_DESC_TABLE_SIZE.

    However, you can configure how many devices to discover via:

    uint8 buf[1] = {DPP_MAX_REPORTED_NODE_DESC};
    RCN_NlmeSetReq( RCN_NIB_NWK_MAX_REPORTED_NODE_DESCRIPTORS, 0, buf);

    Note that this code is taken from line 2601 in rti.c in RemoTI-1.4.0, which defines it to 255. It does however apply to any RemoTI-1.3.1 as well, however there it is set to 1 by default.

    You can also set it from your application with:

    uint8 buf[1] = {<your value>};
    RTI_WriteItemEx(RTI_PROFILE_RTI, 0x6C, 1, buf);