:orphan:

.. title:: IMG_BLOCK_BUF_SIZE

.. option:: CONFIG_IMG_BLOCK_BUF_SIZE

*Image writer buffer size*

Type: ``int``

Help
====

Size (in Bytes) of buffer for image writer. Must be a multiple of
the access alignment required by used flash driver.

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

\ :option:`MCUBOOT_IMG_MANAGER <CONFIG_MCUBOOT_IMG_MANAGER>` && \ :option:`IMG_MANAGER <CONFIG_IMG_MANAGER>`

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

Default
=======

- 512

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

.. highlight:: kconfig

At ``subsys/dfu/Kconfig:55``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:34`` → ``subsys/Kconfig:47``

Menu path: (Top) → Sub Systems and OS Services → DFU image manager

.. parsed-literal::

    config IMG_BLOCK_BUF_SIZE
    	int "Image writer buffer size"
    	default 512
    	depends on \ :option:`MCUBOOT_IMG_MANAGER <CONFIG_MCUBOOT_IMG_MANAGER>` && \ :option:`IMG_MANAGER <CONFIG_IMG_MANAGER>`
    	help
    	  Size (in Bytes) of buffer for image writer. Must be a multiple of
    	  the access alignment required by used flash driver.

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