A Problem on Buttonless DFU + Bonding valid.

Question

Currently, we are testing that 「buttonless DFU + Bonding valid」 in our App.

But After performing F / W Update with DFU, other BLE Service became invisible.(※2)

So, as a result of comparing the log of the Normal Project(No problem) with the log of the current problem project,

I found that there are the following differences.(In the normal case, the following events will occur.)

· PM_EVT_SERVICE_CHANGED_IND_CONFIRMED
· PM_EVT_PEER_DATA_UPDATE_SUCCEEDED

And Compared & checked "sdk_config.h", "makefile", "linkscript file", "source file", etc. But did not find a place likely to be a cause.

How can I solve this problem?

Why does the above log difference occur?

Please answer me about my question.

※ SDK Version

nRF5_SDK_15.0.0_a53641a

※ IC

nRF52832

※ Problem Project'SDK Config File

sdk_config.h

(※2)

Hung Bui · Answer

I'm not sure why changing NRF_BLE_GATT_BLE_OBSERVER_PRIO can solve the problem. 
 By "timing delay" I'm not talking about a loop delay, but about to start a timer and only trigger sd_ble_gattc_exchange_mtu_request () after a period of time. 
 You are saying that by commenting out sd_ble_gattc_exchange_mtu_request () you still have trouble when calling sd_ble_gatts_service_changed() ? Could you check which error code you have ? A sniffer trace would really help as well.

A Problem on Buttonless DFU + Bonding valid.

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