Advertising packets power

RE: Advertising packets power

Håkon Alseth — Fri, 05 Aug 2016 06:58:17 GMT

Hi,

Chapter 8.1 in the SoftDevice Specification states which peripherals are blocked, restricted, or open: infocenter.nordicsemi.com/.../S132_SDS_v3.0.pdf

POFCON is in the NRF_POWER, which is restricted, meaning that you will have to use the sd_power* API to use this functionality.

RE: Advertising packets power

genis — Thu, 04 Aug 2016 13:37:27 GMT

How can I know what registers are blocked from the application? For example, can I set the POFCON from the app or do I need to access it through the SD?

Also, I noticed that some functionalities are duplicated in the SDK and the SoftDevice (like start advertising) with almost identical functions in both API. When do I need to use the SoftDevice and when do I need to use the SDK instead.

RE: Advertising packets power

Håkon Alseth — Thu, 04 Aug 2016 12:03:19 GMT

Hi,

Since you're enabling and using the SoftDevice, the RADIO peripheral is blocked seen from the application point-of-view. You can change the output power by calling this softdevice GAP function:

err_code = sd_ble_gap_tx_power_set(tx_power);

To ensure that a connection has a given TX_POWER you can do something like this in the main ble-event handler:

static void on_ble_evt(ble_evt_t * p_ble_evt)
{
    uint32_t                         err_code;
    
    switch (p_ble_evt->header.evt_id)
    {
        case BLE_GAP_EVT_CONNECTED:
            ....
            err_code = sd_ble_gap_tx_power_set(connection_tx_power);
            break;
        case BLE_GAP_EVT_DISCONNECTED:
            ....
            err_code = sd_ble_gap_tx_power_set(adv_tx_power);
            break;
    /* Rest of events and handling */
    }
}

Cheers, Håkon