RE: Way to get the current physical link speed?

Philip — Tue, 12 Feb 2019 09:03:24 GMT

Great thanks, that makes sense.

Regards,

Phil

RE: Way to get the current physical link speed?

ovrebekk — Tue, 12 Feb 2019 08:29:22 GMT

Hi Philip

You should get the BLE_GAP_EVT_PHY_UPDATE event when the phy changes, and you can use this event to figure out which phy you are currently on.

Below I included a small sample which simply outputs the phy to the log when it is updated:

case BLE_GAP_EVT_PHY_UPDATE:
{
ble_gap_evt_phy_update_t phy_update = p_ble_evt->evt.gap_evt.params.phy_update;
if(phy_update.status == BLE_HCI_STATUS_CODE_SUCCESS)
{
NRF_LOG_INFO("PHY updated: %i, %i", phy_update.tx_phy, phy_update.rx_phy);
app_aggregator_phy_update(p_ble_evt->evt.gap_evt.conn_handle, phy_update.tx_phy, phy_update.rx_phy);
}
} break;

Setting the phy to AUTO on the central side allows the peripheral to set the phy freely based on its own requirements. If the peripheral cares more about range than throughput then 1Mbps might be a better choice.

Best regards
Torbjørn