nRF51 SDK v10.0.0
The clock driver includes two layers: the hardware access layer (HAL) and the driver layer (DRV).
The hardware access layer provides basic APIs for accessing the registers of the clock. See the API documentation for the Clock HAL for details.
The driver layer provides APIs on a higher level than the HAL. See the API documentation for the Clock driver for details.
The Clock Example provides sample code that you can use to quickly get started.