Hello,
How to config FEM on "nRF21540-DK" to set the TX power as +20dBm ??
- I used the "perpheral_nus" sample (basic Bluetooth LE sample) in NCS 3.2.4 version
- Also, I understood that activating RF FEM in nRF21540-DK just can be applied based on prj.conf setup.
- Is this wrong??
The following is my prj.conf setup, but except first row,
the others is not activated as shown in the figure below (yellow lines).
The comments indicate that "MPSL_FEM_ANY_SUPPORT" dependency is missing.
CONFIG_MPSL=y
CONFIG_MPSL_FEM=y
CONFIG_MPSL_FEM_NRF21540_GPIO=y
CONFIG_MPSL_FEM_NRF21540_GPIO_SPI=y
CONFIG_MPSL_FEM_NRF21540_TX_GAIN_DB=20
CONFIG_MPSL_FEM_NRF21540_TX_GAIN_DB_POUTA=20
CONFIG_MPSL_FEM_NRF21540_TX_GAIN_DB_POUTB=10
CONFIG_BT_CTLR_TX_PWR_DYNAMIC_CONTROL=y
Of course, I've build the project with target board nrf21540-dk, the related setup in devicetree already included..
-
I just want to activate FEM on the nRF21540-DK with building basic Bluetooth LE sample 
Please give me any comments
Best regards,
Daewoong Kim