INPUTMUX: Input Multiplexing Driver

Overview

The MCUXpresso SDK provides a driver for the Input multiplexing (INPUTMUX).
It configures the inputs to the pin interrupt block, DMA trigger, and frequency measure function. Once configured, the clock is not needed for the inputmux.

Input Multiplexing Driver operation

INPUTMUX_AttachSignal function configures the specified input

Typical use case

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

Files
file	fsl_inputmux.h
file	fsl_inputmux_connections.h

Macros
#define	SCT0_PMUX_ID   0x00U
	Periphinmux IDs.

Enumerations
enum	inputmux_connection_t {   kINPUTMUX_Sct0PinInp0ToSct0 = 0U + (SCT0_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_DebugHaltedToSct0 = 23U + (SCT0_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_GpioPort1Pin31ToPintsel = 63U + (PINTSEL_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_Hwvad0ToDspInterrupt = 33U + (DSP_INT_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_ClockOutToFreqmeas = 11U + (FREQMEAS_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_Usb0FrameToggleToCaptureChannels = 18U + (CT32BIT_CAP_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_AdcToDma0 = 24U + (DMA0_ITRIG_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_AdcToDma1 = 24U + (DMA1_ITRIG_PMUX_ID << PMUX_SHIFT) ,   kINPUTMUX_Dma0OtrigChannel31ToTriginChannels = 31U + (DMA0_OTRIG_PMUX_ID << PMUX_SHIFT) }
	INPUTMUX connections type. More...
enum	inputmux_signal_t {   kINPUTMUX_Dmac0InputTriggerMux0Ena = 0U + (DMA0_ITRIG_EN0_PMUX_ID << ENA_SHIFT) ,   kINPUTMUX_Dmac0InputTriggerMux31Ena = 31U + (DMA0_ITRIG_EN0_PMUX_ID << ENA_SHIFT) ,   kINPUTMUX_Dmac1InputTriggerMux31Ena = 31U + (DMA1_ITRIG_EN0_PMUX_ID << ENA_SHIFT) ,   kINPUTMUX_HashCryptToDmac0Ch30RequestEna = 30U + (DMA0_REQ_ENA0_ID << ENA_SHIFT) }
	INPUTMUX signal enable/disable type. More...

Functions
void	INPUTMUX_Init (INPUTMUX_Type *base)
	Initialize INPUTMUX peripheral. More...
void	INPUTMUX_AttachSignal (INPUTMUX_Type *base, uint32_t index, inputmux_connection_t connection)
	Attaches a signal. More...
void	INPUTMUX_Deinit (INPUTMUX_Type *base)
	Deinitialize INPUTMUX peripheral. More...

Driver version
#define	FSL_INPUTMUX_DRIVER_VERSION   (MAKE_VERSION(2, 0, 1))
	Group interrupt driver version for SDK. More...

Macro Definition Documentation

#define FSL_INPUTMUX_DRIVER_VERSION   (MAKE_VERSION(2, 0, 1))

Version 2.0.1.

Enumeration Type Documentation

enum inputmux_connection_t

Enumerator
kINPUTMUX_Sct0PinInp0ToSct0	SCT INMUX.
kINPUTMUX_DebugHaltedToSct0	Pin Interrupt.
kINPUTMUX_GpioPort1Pin31ToPintsel	DSP Interrupt.
kINPUTMUX_Hwvad0ToDspInterrupt	Frequency measure.
kINPUTMUX_ClockOutToFreqmeas	CTmier capture input mux.
kINPUTMUX_Usb0FrameToggleToCaptureChannels	DMA0 ITRIG.
kINPUTMUX_AdcToDma0	DMA1 ITRIG.
kINPUTMUX_AdcToDma1	DMA0 OTRIG.
kINPUTMUX_Dma0OtrigChannel31ToTriginChannels	DMA1 OTRIG.

enum inputmux_signal_t

Enumerator
kINPUTMUX_Dmac0InputTriggerMux0Ena	DMA0 input trigger mux enable.
kINPUTMUX_Dmac0InputTriggerMux31Ena	DMA1 input trigger mux enable.
kINPUTMUX_Dmac1InputTriggerMux31Ena	DMA0 REQ signal.
kINPUTMUX_HashCryptToDmac0Ch30RequestEna	DMA1 REQ signal.

Function Documentation

void INPUTMUX_Init

(

INPUTMUX_Type *

base

)

This function enables the INPUTMUX clock.

Parameters

base	Base address of the INPUTMUX peripheral.

Return values

None.

void INPUTMUX_AttachSignal	(	INPUTMUX_Type *	base,
		uint32_t	index,
		inputmux_connection_t	connection
	)

This function gates the INPUTPMUX clock.

Parameters

base	Base address of the INPUTMUX peripheral.
index	Destination peripheral to attach the signal to.
connection	Selects connection.

Return values

None.

void INPUTMUX_Deinit

(

INPUTMUX_Type *

base

)

This function disables the INPUTMUX clock.

Parameters

base	Base address of the INPUTMUX peripheral.

Return values

None.