Can BLE_GAP_PHY_1MBPS、BLE_GAP_PHY_2MBPS、BLE_GAP_PHY_CODED be applied to broadcast at the same time in SDK15.3 ？

[bh.niu]

Hi：

    I want to use the long range function in SDK15.3, the chip I use is nrf52840.

   Now I have a problem. When I use the long range function (configure BLE_GAP_PHY_CODED), only the mobile phone that supports the long range function can search the device broadcast, and other mobile phones cannot search the device.

   How can I deal with it so that mobile phones that do not support the long range function can search for devices that support the long range function.

init.config.ble_adv_primary_phy = BLE_GAP_PHY_CODED;
init.config.ble_adv_secondary_phy = BLE_GAP_PHY_CODED;
init.config.ble_adv_extended_enabled = true;

Best regards

[Joakim Jakobsen]

Hi. 

Please take a look at this previous ticket: 

 Backwards compatibility for BLE4 for CODED PHY advertising? 

Br, 
Joakim 

[bh.niu]

Hi Joakim :

Thanks for your reply. I read this ticket：Backwards compatibility for BLE4 for CODED PHY advertising? 

According to the ticket, I drew two conclusions:

1. Standard BLE PHY and coded PHY cannot be used at the same time, and the hardware cannot switch automatically. If you want to switch PHY, you must stop broadcasting, and then select a PHY to rebroadcast

2. During connection, can use sd_ble_gap_phy_update() to switch PHY

Is my understanding correct？

[Joakim Jakobsen]

Yes, that is correct.

You can also use BLE_GAP_PHY_CODED as the secondary_phy to establish the connection on coded_phy.

Br,
Joakim