Help¶

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

Direct dependencies¶

CPU_CORTEX_M_HAS_DWT && (ARMV6_M_ARMV8_M_BASELINE || ARMV7_M_ARMV8_M_MAINLINE) && CPU_CORTEX_M && !ARM64 && ARM

(Includes any dependencies from ifs and menus.)

Default¶

y if TIMING_FUNCTIONS

Kconfig definition¶

At <Zephyr>/arch/arm/core/aarch32/cortex_m/Kconfig:292

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

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

config CORTEX_M_DWT
    bool "Enable and use the DWT"
    default y if TIMING_FUNCTIONS
    depends on CPU_CORTEX_M_HAS_DWT && (ARMV6_M_ARMV8_M_BASELINE || ARMV7_M_ARMV8_M_MAINLINE) && CPU_CORTEX_M && !ARM64 && 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.)