HOW to use direct advertising to connect the central successfully?

[liu_zhixiang]

I use nrf52832 board by fast advertising to connect the central(surface 4 Tablet).Then the board go to sleep.when I push the button the board use direct advertising to connect the central again,but it dont connect. I use the peer manager to get the central address,when the BLE_ADV_EVT_PEER_ADDR_REQUEST event of direct advertising happens.

SDK 14.2  Softdevice 132 .Can you give me some suggestions about direct advertising to connect previous central successfully.

[liu_zhixiang]

when first time  push button ,the board can connect the central by direct advertising.In connection state, application handles things completely, then the board and central disconnect .The board go to sleep. Next time(push button no matter how many times) the board can use direct advertising ,but cannt connect.I'm confused about this problem,How to solve this problem?

[Kenneth]

Hi, can you make sure that you first delete all bonds on the central and peripheral? 

[liu_zhixiang]

Hi,Kenneth,thank you for your reply.I use the experiment Keyboard with SDK 14.2.The central is Tablet PC,peripheral is nrf52 board.Before starting fast advertising,I call funtion delete bonds.  Below are the details of the project:

[liu_zhixiang]

Hi,Kenneth,thank you for your reply.I use the experiment Keyboard with SDK 14.2.The central is Tablet PC,peripheral is nrf52 board.Before starting fast advertising,I call funtion delete bonds.  Below are the details of the project:

[liu_zhixiang]

Hi,Kenneth,thank you for your reply.I use the experiment Keyboard with SDK 14.2.The central is Tablet PC,peripheral is nrf52 board.Before starting fast advertising,I call funtion delete bonds.  Below are the details of the project:

[liu_zhixiang]

Details as following:

1.Before fast advertising, I call delete_bonds() to delete all bonds. Then start fast adv.

2.PC connects the board.Then excute pm_evt_handler() to deal with Peer Manager events including update event using pm_device_identities_list_set(). 

3.After connection and handle some other things ,the board goes to sleep.

4.Push button to wake the board up to  start direct advertising.From log ,can see advertising from direct advertising to slow direct advertising.Then in  BLE_ADV_EVT_PEER_ADDR_REQUEST event use the central's bonding data ,the board cannt connect the in surface 4 Tablet PC,but can connect to Wocan Tablet PC to work .

Is there a problem with that?

After using  fast advertising connect the central, the board always use direct advertising to connect the central expect  to delete the the name of peripheral in the PC.