Hello,
We are testing the radio_test sample on a nrf21540dk board with ncs-2.3.
We want to change the fem tx_gain but we always get the same RSSI value on the nrf connect RSSI VIEWER application.
It's like we always operate with a 20dB gain.
We added the following configuration to the radio_test sample :
CONFIG_FEM=y CONFIG_MPSL=y CONFIG_MPSL_FEM=y CONFIG_MPSL_FEM_NRF21540_GPIO_SPI=y CONFIG_MPSL_FEM_ONLY=y CONFIG_MPSL_FEM_NRF21540_RUNTIME_PA_GAIN_CONTROL=y CONFIG_MPSL_FEM_NRF21540_TX_GAIN_DB=10 CONFIG_RADIO_TEST_POWER_CONTROL_AUTOMATIC=n
Then we used the following commands :
start_channel 1 end_channel 80 time_on_channel 50 fem tx_gain 10 output_power pos0dBm start_tx_sweep
Are we missing something ?