When I enable char. notification on client I got BLE_GATTS_EVT_WRITE to CCCD handle - how to handle it?

[Martin]

Hi, I found that when I enable char. notification from my android client it triggers BLE_GATTS_EVT_WRITE where p_ble_evt->evt.gatts_evt.params.write.handle matches to my attribute.app_char_handles.cccd_handle. Client wants to write 2 Bytes to CCCD of char. on my server. How should I handle it? I don't know to what CCCD structure members I should write this 2 Bytes. Or do I need to care about this?

[Petter Myhre]

You get the event after the attribute has been written to the server, see this. You don't need to handle it, but you could for example use it to keep track of if notifications is enabled(CCCD=0x0001) or not(CCCD=0x0000).