Zephyr - How to set BLE Adversting Tx Power (part 2)

RE: Zephyr - How to set BLE Adversting Tx Power (part 2)

AndyM — Tue, 05 Apr 2022 14:05:28 GMT

Got it thank you

RE: Zephyr - How to set BLE Adversting Tx Power (part 2)

Hung Bui — Tue, 05 Apr 2022 11:49:35 GMT

Hi Andy,

Have you looked at the HCI Power Control (hci_pwr_ctrl) example ?

In the example you can find that TX power can be changed dynamically in both when advertising and when in connection. You don't need to disconnect/stop advertising or disable the stack.

Regarding your frist question, there isn't a similar definition as in radio_config.h in NRF5 SDK. However, the definitions are the same values as in the RADIO->TXPOWER register available value in the nRF52840 specification (2's complement) . You can use the raw number directly.

RE: Zephyr - How to set BLE Adversting Tx Power (part 2)

AndyM — Mon, 04 Apr 2022 21:24:21 GMT

Googled this.

Those are static configuration options

What I need is a set of values that I can pass to the API to set the tx power dynamically

Can I just pass the same values as in nrf radio_config.h ?
What about the questions regarding dynamic setting of tx power?

Is a restart of the ble stack required? If so - what's the API?
I do not see a bt_disable() API , only bt_enabled.

Or just stopping advertising will do?

RE: Zephyr - How to set BLE Adversting Tx Power (part 2)

qwertynoon — Mon, 04 Apr 2022 18:16:17 GMT

CONFIG_BT_CTLR_TX_PWR_PLUS_8=y

google this