about service change can't receive BLE_GATTS_EVT_WRITE

[haorenpingan]

nrf52832     SDK14.2       s132_nrf52_5.0.0_softdevice     PCA10040       ble_app_hids_keyboard  

I modify the project : 

two  service :  one  is   hid   another  is  different  hid_1 

press button 2  init  hid

presss button 3  init  hid_1

connect  the  android  phone , press button2   reset ,and ,init  hid;  press button3   reset  ,and, init  hid_1, reconnect  the phone,

turn  off and on the bluetooth(android  phone),but I can‘t receive   BLE_GATTS_EVT_WRITE(gcm_ble_evt_handler),  I  enable  the  NRF_SDH_BLE_SERVICE_CHANGED

I  can’t  know the reason,  but  SDK15.2   it  succeed,  why?   How  can  i do?

[Simonr]

Hi

I've found that the only change between the gcm_ble_evt_handler in SDK14.2 and SDK15.2 is that the #if PM_SERVICE_CHANGED_ENABLED is present in SDK15.2. So, the most obvious fix would be to add this into your SDK14.2 project. You'll have to define it in gatt_cache_manager.c and in your sdk_config.h file as well as implement it just like in SDK15.2 in order to patch this. That's the patch we provided to the gatt_cache_manager from SDK 14.2 to SDK 15.2, so that would be what fixes this in SDK 14.2 as well.

I must admit that I still don't see why you can't use SDK 15.2 as your actual project, seeing how it's fixed there already, but that's up to you to decide.

Best regards,

Simon

[haorenpingan]

Hi，Do  you  try  as  you suggest? 

I  feel  that  you just give me advice，but you don't prove it.

Now that you find the reason，can you  prove it?

Thank you , I expect  your reply!