Adjusting the TX Power without Softdevice

[philipp]

I am trying to set the transmit power of the NRF51822 (e.g., on the PCA10000, v.2.0.0, but the same happens on other nrf51-devices). I am not using any softdevice. I use the call

NRF_RADIO->TXPOWER = (RADIO_TXPOWER_TXPOWER_Pos4dBm << RADIO_TXPOWER_TXPOWER_Pos);

to set the TX-power. However, my device always uses its lowest transmit power and this call shows no effect. I've tried many different positions (e.g., during initialization, before each transmission, etc.).

What am i doing wrong?

[Michael Dietz]

Maybe this will help you out. Look how it is done in this example. github.com/.../main.c

[philipp]

Thank you for your answer. My code worked well, but i ran into the BL600 whisper mode problem:

https://devzone.nordicsemi.com/question/4629/laird-bl600/

With disactivating the whisper mode, it works just fine!