LLWU: Low-Leakage Wakeup Unit Driver

Overview

The MCUXpresso SDK provides a peripheral driver for the Low-Leakage Wakeup Unit (LLWU) module of MCUXpresso SDK devices. The LLWU module allows the user to select external pin sources and internal modules as a wake-up source from low-leakage power modes.

External wakeup pins configurations

Configures the external wakeup pins' working modes, gets, and clears the wake pin flags. External wakeup pins are accessed by the pinIndex, which is started from 1. Numbers of the external pins depend on the SoC configuration.

Internal wakeup modules configurations

Enables/disables the internal wakeup modules and gets the module flags. Internal modules are accessed by moduleIndex, which is started from 1. Numbers of external pins depend the on SoC configuration.

Digital pin filter for external wakeup pin configurations

Configures the digital pin filter of the external wakeup pins' working modes, gets, and clears the pin filter flags. Digital pin filters are accessed by the filterIndex, which is started from 1. Numbers of external pins depend on the SoC configuration.

Enumerations
enum	llwu_external_pin_mode_t {   kLLWU_ExternalPinDisable = 0U,   kLLWU_ExternalPinRisingEdge = 1U,   kLLWU_ExternalPinFallingEdge = 2U,   kLLWU_ExternalPinAnyEdge = 3U }
	External input pin control modes. More...
enum	llwu_pin_filter_mode_t {   kLLWU_PinFilterDisable = 0U,   kLLWU_PinFilterRisingEdge = 1U,   kLLWU_PinFilterFallingEdge = 2U,   kLLWU_PinFilterAnyEdge = 3U }
	Digital filter control modes. More...

Driver version
#define	FSL_LLWU_DRIVER_VERSION   (MAKE_VERSION(2, 0, 5))
	LLWU driver version. More...

Macro Definition Documentation

#define FSL_LLWU_DRIVER_VERSION   (MAKE_VERSION(2, 0, 5))

Enumeration Type Documentation

enum llwu_external_pin_mode_t

Enumerator
kLLWU_ExternalPinDisable	Pin disabled as a wakeup input.
kLLWU_ExternalPinRisingEdge	Pin enabled with the rising edge detection.
kLLWU_ExternalPinFallingEdge	Pin enabled with the falling edge detection.
kLLWU_ExternalPinAnyEdge	Pin enabled with any change detection.

enum llwu_pin_filter_mode_t

Enumerator
kLLWU_PinFilterDisable	Filter disabled.
kLLWU_PinFilterRisingEdge	Filter positive edge detection.
kLLWU_PinFilterFallingEdge	Filter negative edge detection.
kLLWU_PinFilterAnyEdge	Filter any edge detection.