:orphan:

.. title:: CONFIG_ENTROPY_STM32_ISR_THRESHOLD

.. kconfig:: CONFIG_ENTROPY_STM32_ISR_THRESHOLD

CONFIG_ENTROPY_STM32_ISR_THRESHOLD
##################################

*ISR-mode random number pool low-water threshold*

Type: ``int``

Help
====

.. code-block:: none

    Low water-mark threshold in bytes to trigger entropy generation for
    ISR consumers. As soon as the number of available bytes in the
    buffer goes below this number hardware entropy generation will be
    started.

Direct dependencies
===================

\ :kconfig:`ENTROPY_STM32_RNG <CONFIG_ENTROPY_STM32_RNG>` && \ :kconfig:`ENTROPY_GENERATOR <CONFIG_ENTROPY_GENERATOR>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

No defaults. Implicitly defaults to the empty string.

Kconfig definition
==================



At ``<Zephyr Driver>/entropy/Kconfig.stm32:49``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:42`` → ``<Zephyr Driver>/Kconfig:32`` → ``<Zephyr Driver>/entropy/Kconfig:16``

Menu path: (Top) → Device Drivers → Entropy Drivers → STM32 RNG driver

.. code-block:: kconfig

    config ENTROPY_STM32_ISR_THRESHOLD
    	int "ISR-mode random number pool low-water threshold"
    	range 12 255
    	depends on ENTROPY_STM32_RNG && ENTROPY_GENERATOR
    	help
    	  Low water-mark threshold in bytes to trigger entropy generation for
    	  ISR consumers. As soon as the number of available bytes in the
    	  buffer goes below this number hardware entropy generation will be
    	  started.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*