:orphan:

.. title:: CORTEX_M_DWT

.. option:: CONFIG_CORTEX_M_DWT

*Enable and use the DWT*

Type: ``bool``

Help
====

Enable and use the Data Watchpoint and Trace (DWT) unit for
timing functions.

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

\ :option:`CPU_CORTEX_M_HAS_DWT <CONFIG_CPU_CORTEX_M_HAS_DWT>` && (\ :option:`ARMV6_M_ARMV8_M_BASELINE <CONFIG_ARMV6_M_ARMV8_M_BASELINE>` || \ :option:`ARMV7_M_ARMV8_M_MAINLINE <CONFIG_ARMV7_M_ARMV8_M_MAINLINE>`) && \ :option:`CPU_CORTEX_M <CONFIG_CPU_CORTEX_M>` && !\ :option:`ARM64 <CONFIG_ARM64>` && \ :option:`ARM <CONFIG_ARM>`

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

Default
=======

- y if \ :option:`TIMING_FUNCTIONS <CONFIG_TIMING_FUNCTIONS>`

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

.. highlight:: kconfig

At ``arch/arm/core/aarch32/cortex_m/Kconfig:292``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:29`` → ``arch/Kconfig:12`` → ``arch/arm/Kconfig:42`` → ``arch/arm/core/aarch32/Kconfig:237``

Menu path: (Top) → ARM Options → ARM Cortex-M0/M0+/M1/M3/M4/M7/M23/M33 options

.. parsed-literal::

    config CORTEX_M_DWT
    	bool "Enable and use the DWT"
    	default y if \ :option:`TIMING_FUNCTIONS <CONFIG_TIMING_FUNCTIONS>`
    	depends on \ :option:`CPU_CORTEX_M_HAS_DWT <CONFIG_CPU_CORTEX_M_HAS_DWT>` && (\ :option:`ARMV6_M_ARMV8_M_BASELINE <CONFIG_ARMV6_M_ARMV8_M_BASELINE>` || \ :option:`ARMV7_M_ARMV8_M_MAINLINE <CONFIG_ARMV7_M_ARMV8_M_MAINLINE>`) && \ :option:`CPU_CORTEX_M <CONFIG_CPU_CORTEX_M>` && !\ :option:`ARM64 <CONFIG_ARM64>` && \ :option:`ARM <CONFIG_ARM>`
    	help
    	  Enable and use the Data Watchpoint and Trace (DWT) unit for
    	  timing functions.

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