code phy and 1M phy mixed mode advertising

[carlche]

Dear Nordic support,

I'd assume it should be OK to allow nrf52840 to advertise in dual phy mode - primary in 1Mbps and secondary coded phy so that phones with and without long range support can pickup the advertising?

Can you please show me some example (link/or doc) on how to make a peripheral advertise on both phys so that we can achieve that?

here is what I got:

#define DUAL_PHY 1
#if DUAL_PHY
/**< PHY for the primary advertising. @ref BLE_GAP_PHYS (BLE_GAP_PHY_1MBPS, BLE_GAP_PHY_2MBPS or BLE_GAP_PHY_CODED). */
init.config.ble_adv_primary_phy = BLE_GAP_PHY_1MBPS;
init.config.ble_adv_secondary_phy = BLE_GAP_PHY_CODED;/**< Enable or disable extended advertising. */
init.config.ble_adv_extended_enabled = true;/**< Enable or disable extended advertising. */
#else
init.config.ble_adv_primary_phy = BLE_GAP_PHY_1MBPS;
//init.config.properties.type = BLE_GAP_ADV_TYPE_CONNECTABLE_SCANNABLE_UNDIRECTED;
#endif

But looks like it is not working as expected - seems the extended adv enable or not plays a big role here. 

Your support is appreciated,

Lichang

[carlche]

I have played with the following configuration:

The following makes phone supporting BT4.2 see the adv but DK running long range central example cannot see/connect to to the peripheral DK.

init.config.ble_adv_primary_phy = BLE_GAP_PHY_1MBPS;
init.config.ble_adv_secondary_phy = BLE_GAP_PHY_CODED;/**< Enable or disable extended advertising. */
init.config.ble_adv_extended_enabled = false;/**< Enable or disable extended advertising. */

 

BT4.2 phone cannot see the adv using the following config:

init.config.ble_adv_primary_phy = BLE_GAP_PHY_CODED;
init.config.ble_adv_secondary_phy = BLE_GAP_PHY_1MBPS;/**< Enable or disable extended advertising. */
init.config.ble_adv_extended_enabled = true;/**< Enable or disable extended advertising. */

Can you please give us some code snippets which can support both long range and 4.2 only phy?

Thanks

[carlche]

I'm replying myself again - I saw this thread,  https://devzone.nordicsemi.com/f/nordic-q-a/35596/advertising-on-two-different-phy-simultaneously , is the answer there still relevant?

[Kenneth]

Yes, you will have to start and stop advertisement.

[yuval]

Hi,

1) Is this answer is still relevant?

2) Is it possible to declare 2 of "advertising_init" with different defining and tags? and operate them simultaneously ?!

3) What is the best way to advertise in 1m phy and in coded phy to allow phones (wich use  ble 4.2 only) or my custom central long range devices to "see" the pheripheral and connect to it (not simultaneously !) ?

[Kenneth]

The linked reply is still accurate. Simply stop, re-configure, and start advertisement from for instance an app_timer can work (e.g. every 500ms).

Kenneth