ble_db_discovery_start INVALID_STATE

[q]

Hi

I am receiving INVALID_STATE (error code 8) from ble_db_discovery_start. According to documentation, this error can be returned "If this function is called without calling the ble_db_discovery_init, or without calling ble_db_discovery_evt_register." I am calling ble_db_discovery_init in my project, but not ble_db_discovery_evt_register.

Do I need to call both functions before calling ble_db_discovery_start? In the ble_app_cts_c example, I can't find ble_db_discovery_evt_register. If it is required, is it called in a library function somewhere?

Thanks

PCA10040 nRF52832 SDK13