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CC2564MODA: service pack for a Class 2 limited signal strength

Alain Werck
Prodigy 220 points
Part Number: CC2564MODA
Other Parts Discussed in Thread: CC2564, CC256XB-BT-SP

Hi,

I am working on an Audio Bluetooth product using a CC2564MODA, which is to be used in industrial environments with signal strength restrictions. The need is to limit the Bluetooth signal to +4dBm. The Bluetooth specification calls that a Class 2 device whereas the CC2564 is ranked as a Class 1.5 in the datasheet (so it can issue a +10dBm signal).

If I did not misunderstand documentations, the signal strength has to be set during the service pack upload. I tried to generate my own CC256XB.h file to be upload but then, I have not the material to test signal strength.

Could you provide me a CC256XB.h file containing the CC256XB-BT-SP v1.7 + AVPR Patch + Class 2 limited signal strength?

Thanks in advance for any help.
Regards,

Alain

  • 0
    TI__Genius 13230 points

    Hi Alain,

    Can you confirm what modulation you want to limit? It is BLE power? Note that the correct way to do this is load the SP, then use HCI commands to lower the BLE power. Thus when you operate the radio you will have the correct level that you need.

    HCI commands to do this can be found here:

    You can also look at the following command for the power vector table: HCI_VS_DRPb_Set_Power_Vector (0xFD82)

    Thanks,

    Riz

  • 0 in reply to Rizwan Murji
    Prodigy 220 points

    Hi Rizwan,

     

    I would like to limit all modulation used in a Bluetooth Classic HFP device. Unfortunately, I am not aware of modulations used by this profile. I don’t use the BLE, so there is no need to limit its signal strength.

    Looking to the command you pointed me, I think the best way is to limit the Max TX Power Level so there are no chance to overcome the dBm limit. The documentation says:

    “The Max TX Power Level can be configured using the “BHET” tool”

    which involves loading a dedicated software pack if I’m correct?

    And as I am not aware of the modulation used, the best way would be to limit the 3 modulations (GFSK, EDR2 and EDR3) to +4dBm.

     

    Regards,

    Alain.