nrf52832 BLE_GAP_PHY_2MBPS configuraion in ble_app_uart peripheral mode

[adnan arshad]

Hi,

I want to configure "BLE_GAP_PHY_2MBPS"  in  ble_app_uart example of sdk 15.3.0 for faster communication, for this i have changed 

BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
//NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_AUTO,
.tx_phys = BLE_GAP_PHY_AUTO,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);

To

BLE_GAP_EVT_PHY_UPDATE_REQUEST:
{
//NRF_LOG_DEBUG("PHY update request.");
ble_gap_phys_t const phys =
{
.rx_phys = BLE_GAP_PHY_2MBPS ,
.tx_phys = BLE_GAP_PHY_2MBPS ,
};
err_code = sd_ble_gap_phy_update(p_ble_evt->evt.gap_evt.conn_handle, &phys);
APP_ERROR_CHECK(err_code);

But it does not effect on the overall time taken by 180 bytes to read and write.

Is there some thing else needs to change to configure BLE_GAP_PHY_2MBPS  communication.

[Edvin]

Hello,

This event, BLE_GAP_EVT_PHY_UPDATE_REQUEST, is the event that is called whenever the other device in the connection requests an update. If you want to request this yourself, you must initiate it from somewhere else after the connection is established.

Try to add the snippet that you have changed to the bottom of your BLE_GAP_EVT_CONNECTED event. If you want to monitor whether the PHY changes you can add the BLE_GAP_EVT_PHY_UPDATE to your ble_evt_handler(). This event will be triggered when the PHY actually changes. 

[adnan arshad]

Thank you Edvin,

I only need to call the changed snipped in the BLE_GAP_EVT_CONNECTED event and the BLE_GAP_EVT_PHY_UPDATE_REQUEST code will remain same with no change? am i correct???.

[Edvin]

Yes. Also, make sure that the other device supports 2MBPS. If it is another nRF you need to have either BLE_GAP_PHY_2MBPS or BLE_GAP_PHY_AUTO in the BLE_GAP_EVT_PHY_UPDATE_REQUEST event.