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WL1837MOD: software related question autorization, changing bluetooth parameters, DLE, connection intervals

Jan Bock
Intellectual 2885 points
Part Number: WL1837MOD

Tool/software:

Hello Team, 

can you help to answer the questions?

We have a TI module WL18xXMOD in a project.
We have questions about the software.

- Can the TI module be configured without special authorization?
- Is special firmware required for the module in order to change the Bluetooth parameters?
- Are there any restrictions regarding Bluetooth?
- What performance settings are there?
- Does the module enable DLE (Data Length Extension)?
- Is it only possible to make programmatic changes with proprietary stacks? (e.g. changing connection intervals etc.)
- Is the performance of Bluetooth impaired by the parallel Wi-Fi connection?

  • 0
    TI__Mastermind 28490 points

    Hi Jan,

    I'll try to answer most of the questions while the remaining I'll need to check with others internally or need some clarification:

    Jan Bock said:
    - Can the TI module be configured without special authorization?

    What kind of configuration are you referring to?

    Jan Bock said:
    - Is special firmware required for the module in order to change the Bluetooth parameters?

    No, all the parameters are built into the BTS. On the WiFi side, there are RF parameters you can change that are within the INI file: https://git.ti.com/cgit/wilink8-wlan/18xx-ti-utils/tree/wlconf/example.ini

    Jan Bock said:
    - Are there any restrictions regarding Bluetooth?

    The WL18xx devices feature dual-mode Bluetooth 5.1 spec, so the devices are restricted to what is within this specification. I'm not sure of any other limitation you may be referring to. 

    Jan Bock said:
    - What performance settings are there?

    I'm not sure, let me try to find out more. 

    Jan Bock said:
    - Does the module enable DLE (Data Length Extension)?

    I will need to check but I do not believe so. 

    Jan Bock said:
    - Is it only possible to make programmatic changes with proprietary stacks? (e.g. changing connection intervals etc.)

    That is correct. You can use either BlueZ or Bluetopia stack to change bluetooth connection parameters or types.

    Jan Bock said:
    - Is the performance of Bluetooth impaired by the parallel Wi-Fi connection?

    No. The WL18xx has internal coexistence such that the WiFi and Bluetooth can be active at the same time and maintain respective connections. 

  • 0 in reply to Sabeeh Khan1
    TI__Intellectual 2885 points

    Here additional input from the customer: 

    In short, we need to establish a high-performance BT connection to the PC or mobile devices and do not know how to increase the payload (length of the transmitted data block). Somehow, somewhere, an agreement has to be reached between Mobile and our embedded VCI. 

  • 0 in reply to Jan Bock
    TI__Mastermind 22405 points

    Lets consider this closed for now.

    Once you have additional information from the customer specific issue, open a dedicated thread and I can assign a BLE/BT engineer to it.