Configuring TX power level on the central device - nrf52840 / VS code / nrf connect / zephyr

[MMH]

Hi, 

I am trying to set the Tx power level on the central device, I have followed the nordic example samples/bluetooth/hci_pwr_ctrl in the Zephyr tree. But it only sets for the peripheral device and it works fine. 

I tried following the same steps to set the central device and I was not able to do so. 

1.Can we set the TX power level on the central device (I am using nrf52840) using zephyr? I am using the Central uart code.

2. What is the TX power level set on the Central device by default?

3. Is there any example codes I can refer to that sets the TX power on the central device?

I am using nRF Connect SDK v2.9.0[nrf]

Software - VS Code

Board - nrf52840-DK

Kindly let me know. 

Thanks, 

Mujeefa

[Kazi Afroza Sultana]

Hello Mujeefa,

You can read the register value of TXPOWER by the following command

nrfjprog --memrd 0x4000150C

The deafult value is 0dbM (https://docs.nordicsemi.com/bundle/ps_nrf52840/page/radio.html#ariaid-title70).

If you set TX power 8dbM it will look like this