esp-idf/docs/api-reference/system/index.rst

System API
**********

.. toctree::
   :maxdepth: 1

   Memory Allocation <mem_alloc>
   Interrupt Allocation <intr_alloc>
   Watchdogs <wdts>
   Over The Air Updates (OTA) <ota>
   Deep Sleep <deep_sleep>
   Logging <log>
   Base MAC address <base_mac_address>


Example code for this API section is provided in :example:`system` directory of ESP-IDF examples.