How to set the Tx power to +8db on nRF52840

Question

Hello, I have an nRF52840 SoC on which I want to set the transmission power to +8db. I have already tried the following in the configuration, but unfortunately the transmission power does not improve. CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y
CONFIG_BT_CTLR_TX_PWR_PLUS_8=y
 How do I configure this correctly? NCS 2.3.0 nRF52840 - WE_Proteus-3 Regards, Jonas

Naeem Maroof · Accepted Answer

Hi Jonas, 
 Thank you for contacting DevZone at NordicSemi. 
 As you wanted to set Plu_8 db power level for the tx power, I started with peripheral_ht sample in ncs2.3.0 for nrf52840. 
 I could see in the .config that the default power level is used and I could read the tx power level from the radio register 
 
 Next, I applied the following configurations, and rebuilt the project and flashed it 
 CONFIG_BT_CTLR_TX_PWR_PLUS_8=y
CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y 
 I could see the correct option being selected in the .config file and I could also read the correct value (as per the product specification) from the radio register 
 
 Please make sure that you are meeting all the dependencies of the configurations you are using. 
 Also, please check in the .config (in /build/zephyr/) that correct config options are selected. 
 You could also replicate how I did and compare with your project. 
 Regards, Naeem