HCI commands for BLE and Bluetooth

[MajaDP]

We purchased Laird Dev Kit (453-00084-K1) containing Infineon CYW43439 chip. We hoped that we can use HCI commands for BLE DTM and that we could also set the TX power of the chip through BLE DTM commands.

Chip manages to receive and respond successfully on HCI_LE_Transmitter_Test command, however it seems it only works for [V1] version of the command. Is there a way for the chip to support [V4] version, which supports Transmit_Power_Level parameter?

Or is there a way to set TX power through HCI Vendor specific commands for BLE DTM tests? If there is, could you please share the format of this HCI command?

Also, is there a document describing all supported HCI commands for BLE and Bluetooth?

Thank you.

[BragadeeshV · Accepted solution]

Hi @MajaDP ,

HCI_LE_Transmitter_Test [v4] is supported only for devices that supports core spec features of v5.2 and above. CYW43439 will not be able to support this since it does not support many of the features present in the command.

Currently, the LE transmitter test does not allow us to specify the Tx power level for this device. You might have to create a new case in Mycase system or contact your local sales representative for your enhancement request.

You can use the CyBluetool to identify the list of vendor specific commands. The following document should also be useful.

[MajaDP]

Dear Bragadeesh,

Thank you for your answer. We will look into CyBluetool but we are a bit confused. In Infineon CYW43439 datasheet it is says (quote): "Radio with Integrated Bluetooth 5.2 Compliance" and "Bluetooth 5.2 compliance (Basic Rate, Enhanced Data Rate and Bluetooth Low Energy)". Could you please comment?

Also, there has to be a way to set TX power, either for BLE or BR/EDR?

Thank you,
Maja

[BragadeeshV]

Hi @MajaDP ,

Yes, the device is listed as 5.2 compliant (for compatibility) but it does not support all the features of BT 5.2. The supported features are listed in the device datasheet.  The default transmit power level of the device can be modified only by generating a new FW file (HCD file). We need to take this request through the mycase system for further support.