Implementing Set Tx Power command in USB CDC

[fowolabi]

I am using the cdc_acm example and have added a command to set and read tx power. I am trying to use the following commands for this.

BT_HCI_OP_VS_WRITE_TX_POWER_LEVEL

BT_HCI_OP_VS_READ_TX_POWER_LEVEL

When I try to read or set tx power the following error is seen.

As I understand this is due to a wrong implementation of the vendor specific HCI command but I am unsure how to resolve this issue, also in the above screenshot the error is not seen if the power is set to 0dBm which should be the default.

The implementation for this can be seen below as well as the project config file.

[Einar Thorsrud]

Hi,

You can refer to the HCI Power Control sample for how to set the Tx power via HCI.

[fowolabi]

I have referred to this and get the same issue when using the method from this sample

[Einar Thorsrud]

I see. The same should work and does so om my end. Can you start by copy-pasting in the exact implementation from the sample and see that it works before you start modifyin things? Does it still fail? If so, can you share a simple but complete project I can test on my end that fails so that I can have a look? (as source code/text, not screenshots)