Overview of CHIP nRF52840 Adaption

The following is a quick overview of the nRF5 adaptation of CHIP. Most of this code will have parallels in any new adaptation.

(All file names are relative to connectedhomeip/src/...).

include/platform/nRF5/PlatformManagerImpl.h
nRF5/PlatformManagerImpl.cpp

  • Concrete implementation of PlatformManager interface
  • Provides initialization of the CHIP stack and core event loop for the chip task
  • Relies on GenericPlatformManagerImpl_FreeRTOS<> class to provide most of the implementation

include/platform/nRF5/ConfigurationManagerImpl.h
nRF5/ConfigurationManagerImpl.cpp

  • Concrete implementation of ConfigurationManager interface
  • Manages storage and retrieval of persistent configuration data
  • Relies on GenericConfigurationManagerImpl<> classes to implement most API functionality
  • Delegates low-level reading and writing of persistent values to NRF5Config class

include/platform/nRF5/ConnectivityManagerImpl.h
nRF5/ConnectivityManagerImpl.cpp

  • Concrete implementation of ConnectivityManager interface
  • Provides high-level APIs for managing device connectivity
  • Relies on various generic implementation classes to provide API functionality
  • Very much a work-in-progress in the nrf52840 branch

include/platform/nRF5/ThreadStackManagerImpl.h
nRF5/ThreadStackManagerImpl.cpp

  • Concrete implementation of ThreadStackManager interface
  • Supports Thread stack initialization and core event loop processing
  • Relies on GenericThreadStackManagerImpl_OpenThread/FreeRTOS/LwIP<> classes to implement most API functionaltiy
  • Work-in-progress [2019/04/01]

include/platform/nRF5/BLEManagerImpl.h
nRF5/BLEManagerImpl.cpp

  • Concrete implementation of the BLEManager interface
  • Maps CHIP‘s BLE interface abstractions (BleLayer, BlePlatformDelegate, BleApplicationDelegate) onto the platform’s native BLE services
  • Implements chip-compatible BLE advertising.

platform/nRF5/Entropy.cpp

  • Implements interface to platform entropy source

platform/nRF5/Logging.cpp

  • Adaption of chip debug logging to platform logging facility.

platform/nRF5/NRF5Config.cpp

  • Implements low-level read/write of persistent configuration values
  • Class API specifically designed to work in conjunction with the GenericConfigurationManagerImpl<> class.