INTMUX: Interrupt Multiplexer Driver

Overview

The MCUXpresso SDK provides a peripheral driver for the Interrupt Multiplexer (INTMUX) module of MCUXpresso SDK devices.

Typical use case

Channel Configure

Refer to the driver examples codes located at <SDK_ROOT>/boards/<BOARD>/driver_examples/intmux

Typedefs
typedef enum _intmux_channel_logic_mode	intmux_channel_logic_mode_t
	INTMUX channel logic mode. More...

Enumerations
enum	_intmux_channel_logic_mode {   kINTMUX_ChannelLogicOR = 0x0U,   kINTMUX_ChannelLogicAND }
	INTMUX channel logic mode. More...

Driver version
#define	FSL_INTMUX_DRIVER_VERSION   (MAKE_VERSION(2, 0, 4))

Initialization and deinitialization
void	INTMUX_Init (INTMUX_Type *base)
	Initializes the INTMUX module. More...
void	INTMUX_Deinit (INTMUX_Type *base)
	Deinitializes an INTMUX instance for operation. More...
static void	INTMUX_ResetChannel (INTMUX_Type *base, uint32_t channel)
	Resets an INTMUX channel. More...
static void	INTMUX_SetChannelMode (INTMUX_Type *base, uint32_t channel, intmux_channel_logic_mode_t logic)
	Sets the logic mode for an INTMUX channel. More...

Sources
static void	INTMUX_EnableInterrupt (INTMUX_Type *base, uint32_t channel, IRQn_Type irq)
	Enables an interrupt source on an INTMUX channel. More...
static void	INTMUX_DisableInterrupt (INTMUX_Type *base, uint32_t channel, IRQn_Type irq)
	Disables an interrupt source on an INTMUX channel. More...

Status
static uint32_t	INTMUX_GetChannelPendingSources (INTMUX_Type *base, uint32_t channel)
	Gets INTMUX pending interrupt sources for a specific channel. More...

Typedef Documentation

typedef enum _intmux_channel_logic_mode intmux_channel_logic_mode_t

Enumeration Type Documentation

enum _intmux_channel_logic_mode

Enumerator
kINTMUX_ChannelLogicOR	Logic OR all enabled interrupt inputs.
kINTMUX_ChannelLogicAND	Logic AND all enabled interrupt inputs.

Function Documentation

void INTMUX_Init

(

INTMUX_Type *

base

)

This function enables the clock gate for the specified INTMUX. It then resets all channels, so that no interrupt sources are routed and the logic mode is set to default of kINTMUX_ChannelLogicOR. Finally, the NVIC vectors for all the INTMUX output channels are enabled.

Parameters

base	INTMUX peripheral base address.

void INTMUX_Deinit

(

INTMUX_Type *

base

)

The clock gate for the specified INTMUX is disabled and the NVIC vectors for all channels are disabled.

Parameters

base	INTMUX peripheral base address.

static void INTMUX_ResetChannel ( INTMUX_Type *  base, uint32_t  channel  )

inlinestatic

Sets all register values in the specified channel to their reset value. This function disables all interrupt sources for the channel.

Parameters

base	INTMUX peripheral base address.
channel	The INTMUX channel number.

static void INTMUX_SetChannelMode ( INTMUX_Type *  base, uint32_t  channel, intmux_channel_logic_mode_t  logic  )

inlinestatic

INTMUX channels can be configured to use one of the two logic modes that control how pending interrupt sources on the channel trigger the output interrupt.

• kINTMUX_ChannelLogicOR means any source pending triggers the output interrupt.
• kINTMUX_ChannelLogicAND means all selected sources on the channel must be pending before the channel output interrupt triggers.

Parameters

base	INTMUX peripheral base address.
channel	The INTMUX channel number.
logic	The INTMUX channel logic mode.

static void INTMUX_EnableInterrupt ( INTMUX_Type *  base, uint32_t  channel, IRQn_Type  irq  )

inlinestatic

Parameters

base	INTMUX peripheral base address.
channel	Index of the INTMUX channel on which the specified interrupt is enabled.
irq	Interrupt to route to the specified INTMUX channel. The interrupt must be an INTMUX source.

static void INTMUX_DisableInterrupt ( INTMUX_Type *  base, uint32_t  channel, IRQn_Type  irq  )

inlinestatic

Parameters

base	INTMUX peripheral base address.
channel	Index of the INTMUX channel on which the specified interrupt is disabled.
irq	Interrupt number. The interrupt must be an INTMUX source.

static uint32_t INTMUX_GetChannelPendingSources ( INTMUX_Type *  base, uint32_t  channel  )

inlinestatic

Parameters

base	INTMUX peripheral base address.
channel	The INTMUX channel number.

Returns

The mask of pending interrupt bits. Bit[n] set means INTMUX source n is pending.