RE: Thingy 53 and nRF21540 Frontend (Bluetooth Mesh) - How to set TX power via SPI

cb235 — Fri, 21 Jul 2023 10:34:13 GMT

Hi Bendik,

thanks for your reply. Using the "CONFIG_BT_CTLR_TX_PWR_ANTENNA" works well.

In further use cases I need to adjust the tx power during runtime, so I will need to implement the spi communication.

Best Regards

Bendik Heiskel — Tue, 18 Jul 2023 11:34:39 GMT

Hi,

The control of the nRF21540 is handled by the MPSL FEM driver. This means you won't need to implement the SPI communication yourself.

The easiest way to configure the TX output power is to just use CONFIG_BT_CTLR_TX_PWR_ANTENNA to set the final output power at compile time.

Best regards,

Bendik