Irq

Overview

Modules
	IRQ: external interrupt (IRQ) module

Files
file	fsl_irq.h

Data Structures
struct	irq_config_t
	The IRQ pin configuration structure. More...

Enumerations
enum	irq_edge_t {   kIRQ_FallingEdgeorLowlevel = 0U,   kIRQ_RisingEdgeorHighlevel = 1U }
	Interrupt Request (IRQ) Edge Select. More...
enum	irq_mode_t {   kIRQ_DetectOnEdgesOnly = 0U,   kIRQ_DetectOnEdgesAndEdges = 1U }
	Interrupt Request (IRQ) Detection Mode. More...

Driver version
#define	FSL_IRQ_DRIVER_VERSION   (MAKE_VERSION(2, 0, 2))
	Version 2.0.2. More...

IRQ Configuration
uint32_t	IRQ_GetInstance (IRQ_Type *base)
	Get irq instance. More...
void	IRQ_Init (IRQ_Type *base, const irq_config_t *config)
	Initializes the IRQ pin used by the board. More...
void	IRQ_Deinit (IRQ_Type *base)
	Deinitialize IRQ peripheral. More...
static void	IRQ_Enable (IRQ_Type *base, bool enable)
	Enable/disable IRQ pin. More...

IRQ interrupt Operations
static void	IRQ_EnableInterrupt (IRQ_Type *base, bool enable)
	Enable/disable IRQ pin interrupt. More...
static void	IRQ_ClearIRQFlag (IRQ_Type *base)
	Clear IRQF flag. More...
static uint32_t	IRQ_GetIRQFlag (IRQ_Type *base)
	Get IRQF flag. More...

---

Data Structure Documentation

struct irq_config_t

Data Fields
bool	enablePullDevice
	Enable/disable the internal pullup device when the IRQ pin is enabled.
irq_edge_t	edgeSelect
	Select the polarity of edges or levels on the IRQ pin that cause IRQF to be set.
irq_mode_t	detectMode
	select either edge-only detection or edge-and-level detection

Macro Definition Documentation

#define FSL_IRQ_DRIVER_VERSION   (MAKE_VERSION(2, 0, 2))

Enumeration Type Documentation

enum irq_edge_t

Enumerator
kIRQ_FallingEdgeorLowlevel	IRQ is falling-edge or falling-edge/low-level sensitive.
kIRQ_RisingEdgeorHighlevel	IRQ is rising-edge or rising-edge/high-level sensitive.

enum irq_mode_t

Enumerator
kIRQ_DetectOnEdgesOnly	IRQ event is detected only on falling/rising edges.
kIRQ_DetectOnEdgesAndEdges	IRQ event is detected on falling/rising edges and low/high levels.

Function Documentation

uint32_t IRQ_GetInstance

(

IRQ_Type *

base

)

Parameters

base	IRQ peripheral base pointer

Return values

Irq	instance number.

void IRQ_Init	(	IRQ_Type *	base,
		const irq_config_t *	config
	)

To initialize the IRQ pin, define a irq configuration, specify whhether enable pull-up, the edge and detect mode. Then, call the IRQ_Init() function.

This is an example to initialize irq configuration.

* irq_config_t config =
* {
*   true,
*   kIRQ_FallingEdgeorLowlevel,
*   kIRQ_DetectOnEdgesOnly
* }
* 

Parameters

base	IRQ peripheral base pointer
config	IRQ configuration pointer

void IRQ_Deinit

(

IRQ_Type *

base

)

This function disables the IRQ clock.

Parameters

base	IRQ peripheral base pointer.

Return values

None.

static void IRQ_Enable ( IRQ_Type *  base, bool  enable  )

inlinestatic

Parameters

base	IRQ peripheral base pointer.
enable	true to enable IRQ pin, else disable IRQ pin.

Return values

None.

static void IRQ_EnableInterrupt ( IRQ_Type *  base, bool  enable  )

inlinestatic

Parameters

base	IRQ peripheral base pointer.
enable	true to enable IRQF assert interrupt request, else disable.

Return values

None.

static void IRQ_ClearIRQFlag ( IRQ_Type *  base )

inlinestatic

This function clears the IRQF flag.

Parameters

base	IRQ peripheral base pointer.

Return values

None.

static uint32_t IRQ_GetIRQFlag ( IRQ_Type *  base )

inlinestatic

This function returns the IRQF flag.

Parameters

base	IRQ peripheral base pointer.

Return values

status

= 0 IRQF flag deasserted. = 1 IRQF flag asserted.