Is it possible to be dynamic change TX power in nrf52 SDK PXP example ?

[Derek]

I have a question about PXP profile. Could I use the nrF52 (S132) Nordic's PXP example to dynamic change TX power when I have bonded or connected Android phone device ? I want to dynamic change TX power level (Ex: using SDK API "sd_ble_gap_tx_power_set(tx_level)") to trigger link loss service to alarm my phone.

Is it possible to be change TX power ? Because TX power service and advertising initializing function has already set the TX power level. Thank you !!

[MartinBL]

Hi. I'm not exactly sure what you are asking here, but yes, you can change the power level whenever you want. Just use the function you mention, sd_ble_gap_tx_power_set(), or you can set it directly in the RADIO->TXPOWER register.

You can also measure the RSSI by triggering RADIO->TASKS_RSSISTART and then read from the RADIO->RSSISAMPLE register.

This way you can e.g. change the TX power level dynamically based on the measured RSSI.

[Derek]

Hi, After refine my source code flow and then use "sd_ble_gap_tx_power_set". It's OK!! Thank you for your help !!