Hi,
I would like to know how to detect the service change of the ANCS gatt server.
Thank you! Joseph
Hi,
I would like to know how to detect the service change of the ANCS gatt server.
Thank you! Joseph
@Joseph: According to the spec of ANCS " the NC (notification consumer) should look for and subscribe to the Service Changed characteristic of the GATT service in order to monitor for the potential publishing and unpublishing of the ANCS at any time."
What it means is the client should enable indication on the service changed characteristic. And it will receive an indication (BLE_GATTC_EVT_HVX event) when there's a service change.
[EDIT] changed from "need to" to "should"
Hello Hung, I downloaded the ble_app_ancs project (SDK v8.1.0), I search through the 2 files main.c & ble_ancs_c.c with the matching word "change", but I cannot find anything related to service change of the gatt server, could you give me some hints? Thanks!
Hello Hung, I downloaded the ble_app_ancs project (SDK v8.1.0), I search through the 2 files main.c & ble_ancs_c.c with the matching word "change", but I cannot find anything related to service change of the gatt server, could you give me some hints? Thanks!