:orphan:

.. title:: CONFIG_IWDG_STM32_INITIAL_TIMEOUT

.. kconfig:: CONFIG_IWDG_STM32_INITIAL_TIMEOUT

CONFIG_IWDG_STM32_INITIAL_TIMEOUT
#################################

*Value for IWDG timeout in ms*

Type: ``int``

Help
====

.. code-block:: none

    Set initial timeout value for IWDG in ms if enabled at boot.

    The min timeout supported is 1 ms. The max timeout depends on the
    MCU's LSI clock frequency and can be calculated with:

      max. prescaler value (256) * max. reload ticks (4096) / LSI freq.

    Limiting maximum timeout to a safe value of 26214 ms here, which was
    calculated for highest LSI frequency among STM32 MCUs of 40 kHz.

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

\ :kconfig:`IWDG_STM32 <CONFIG_IWDG_STM32>` && \ :kconfig:`WATCHDOG <CONFIG_WATCHDOG>`

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

Default
=======

- 100

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



At ``<Zephyr Driver>/watchdog/Kconfig.stm32:18``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:42`` → ``<Zephyr Driver>/Kconfig:54`` → ``<Zephyr Driver>/watchdog/Kconfig:33``

Menu path: (Top) → Device Drivers → Watchdog Support → Independent Watchdog (IWDG) Driver for STM32 family of MCUs

.. code-block:: kconfig

    config IWDG_STM32_INITIAL_TIMEOUT
    	int "Value for IWDG timeout in ms"
    	range 1 26214
    	default 100
    	depends on IWDG_STM32 && WATCHDOG
    	help
    	  Set initial timeout value for IWDG in ms if enabled at boot.
	  
    	  The min timeout supported is 1 ms. The max timeout depends on the
    	  MCU's LSI clock frequency and can be calculated with:
	  
    	    max. prescaler value (256) * max. reload ticks (4096) / LSI freq.
	  
    	  Limiting maximum timeout to a safe value of 26214 ms here, which was
    	  calculated for highest LSI frequency among STM32 MCUs of 40 kHz.

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