Integrating firmware update platform hooks with your application

The FOTA library offers platform hook callbacks that you can use to integrate platform-specific code during the FOTA flow; for example, if Device Management Client shares a resource with another component of the system.

By default, FOTA provides an empty implementation for these hooks. You can override these hooks by injecting the FOTA_CUSTOM_PLATFORM macro to the build and implementing all of the callback functions listed in fota_platform_hooks.h:

• fota_platform_init_hook() - Platform init hook, which the client calls when it initializes the FOTA module.

  The client uses fota_platform_init_hook() to register custom components, as described in the Implementing component update, and subcomponents for a combined update, as described in the Implementing combined update.

• fota_platform_start_update_hook() - Platform start update hook, which the client calls when the update begins.

• fota_platform_finish_update_hook() - Platform finish update hook, which the client calls when the update has finished.

• fota_platform_abort_update_hook() - Platform start update hook, which the client calls if an update is aborted.