pw::digital_io::McuxpressoDigitalInOutInterrupt Class Reference

Overview

Provides input, output, and interrupt support for an MCUXpresso GPIO pin.

Interrupts are provided by IRQ "A" on the GPIO module.

Class-specific behaviors:

• The direction of the pin cannot be changed after construction.
• If configured as an output:
  • The default state on Enable is 0 (inactive).
  • Disable has no actual effect; unlike McuxpressoDigitalOut, the GPIO is not reverted to an input.
• If configured as an input:
  • The input buffer for the pin must be enabled in the IO Pad Controller (IOPCTL) via the Input Buffer Enable (IBENA) bit.
  • The input polarity is affected by the Input Invert Enable (IIENA) bit on the corresponding IO Pad Controller (IOPCTL) register.

In general, only one line should be created per (port, pin) pair. Attempting to register multiple interrupt handlers on the same line will result in SetInterruptHandler returning pw::Status::AlreadyExists.

Inheritance diagram for pw::digital_io::McuxpressoDigitalInOutInterrupt:

Public Member Functions
	McuxpressoDigitalInOutInterrupt (GPIO_Type *base, uint32_t port, uint32_t pin, bool output)
bool	is_enabled () const
	Returns true if the line is enabled (in any state).
Public Member Functions inherited from pw::digital_io::DigitalInOutInterrupt
Status	ClearInterruptHandler ()
Status	DisableInterruptHandler ()
Status	EnableInterruptHandler ()
Result< State >	GetState ()
Result< bool >	IsStateActive ()
Status	SetInterruptHandler (InterruptTrigger trigger, InterruptHandler &&handler)
Status	SetState (State state)
Status	SetStateActive ()
Status	SetStateInactive ()
Public Member Functions inherited from pw::digital_io::DigitalIoOptional
constexpr bool	provides_input () const
constexpr bool	provides_output () const
constexpr bool	provides_interrupt () const
Result< State >	GetState ()
Status	SetState (State state)
Result< bool >	IsStateActive ()
Status	SetStateActive ()
Status	SetStateInactive ()
Status	SetInterruptHandler (InterruptTrigger trigger, InterruptHandler &&handler)
Status	ClearInterruptHandler ()
Status	EnableInterruptHandler ()
Status	DisableInterruptHandler ()
Status	Enable ()
Status	Disable ()

Private Member Functions
pw::Status	DoEnable (bool enable) override
pw::Result< pw::digital_io::State >	DoGetState () override
pw::Status	DoSetState (pw::digital_io::State state) override
pw::Status	DoSetInterruptHandler (pw::digital_io::InterruptTrigger trigger, pw::digital_io::InterruptHandler &&handler) override
pw::Status	DoEnableInterruptHandler (bool enable) override

Friends
void	GPIO_INTA_DriverIRQHandler ()

Additional Inherited Members
Protected Member Functions inherited from pw::IntrusiveForwardList< T >::Item
constexpr	Item ()=default

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The documentation for this class was generated from the following file:

• pw_digital_io_mcuxpresso/public/pw_digital_io_mcuxpresso/digital_io.h