nRF Connect and Tx Power Level attribute

[p143]

Hi all.

I guess the answer is yes, but just to make sure. I'm playing around with a nRF52840 DK, and some nRF52840 SoC modules. When you run the nRF Connect tool for Android and scan for BLE devices, one of the parameters being shown is Tx Power Level in dBm.

My question is: is this the same parameter you can print by using the SDK 15.2.0>examples>Hardware peripheral examples>Radio Test Example>CLI Commands>parameters_print? or set though SDK 15.2.0>examples>Hardware peripheral examples>Radio Test Example>CLI Commands>Output_Power?

Thanks 

[AndreasF]

Hi.

The nRF Connect application does not show TX Power, it shows RX Power.

TX power is the transmitted power, when you are scanning you are receiving, so that would be RX power.

The CLI Command output_power sets the TX power for the radio, and that is not the same as the RX power displayed in the nRF Connect application.

Best regards.

Andreas

[p143]

Sorry Andreas. I know what Rx power is, and also what RSSI calculation means, but I am not referring to this. When using the nRF Connect app for mobiles, if I click in my NINA-B312 uBlox scanned module y clearly read "Tx Power Level: 6 dBm". That's what I am referring to. Thanks

[AndreasF]

Hi.

Could you please provide me with some screenshots of this?

When nRF Connect is acting as a scanner, any power levels display is RX power.

Best regards.

[STE]

Due to this thread have no answer and I'm also interested to know why in some situation the nRF Connect Mobile application show the Tx Power level string and in other device this is not show I put below this two scenario.

1. The label TX Power Level is shown

2. The label TX Power Level is not shown

Why this difference, is a attribute that I've to set into the nRF Connect SDK on the peripheral device?

Thanks and best regards

F.

[STE]

I think I found the solution, you have to use the option BT_LE_ADV_OPT_USE_TX_POWER into the adv create stage, here below the setting.

and below the screenshot from nRF Connect for mobile app (Android phone).

Hope can help.

Thanks and best regards.

Fabio