API Functions

Overview

Function definitions for GPIO driver.

Functions
void	gpio_applyConfig (gpio_instance_t *inst)
	Apply stored GPIO configuration to hardware.

GPIO (Get Functions)
Read values from the GPIO hardware registers.
u32	gpio_getInput (gpio_instance_t *inst)
	Read GPIO Input Register.
u32	gpio_getOutput (gpio_instance_t *inst)
	Get stored GPIO Output Value.
u32	gpio_getOutputEnable (gpio_instance_t *inst)
	Get stored GPIO Output Enable Mask.
u32	gpio_getInterruptRiseEnable (gpio_instance_t *inst)
	Get Rising Edge Interrupt Mask.
u32	gpio_getInterruptFallEnable (gpio_instance_t *inst)
	Get Falling Edge Interrupt Mask.
u32	gpio_getInterruptHighEnable (gpio_instance_t *inst)
	Get High Level Interrupt Mask.
u32	gpio_getInterruptLowEnable (gpio_instance_t *inst)
	Get Low Level Interrupt Mask.

GPIO (Set Functions)
Write values to the GPIO registers. Note Call gpio_applyConfig() to make these changes effective.
void	gpio_setOutput (gpio_instance_t *inst, u32 value)
	Set GPIO Output Value.
void	gpio_setOutputEnable (gpio_instance_t *inst, u32 value)
	Set GPIO Output Enable (Direction).
void	gpio_setInterruptRiseEnable (gpio_instance_t *inst, u32 value)
	Set Rising Edge Interrupt Enable.
void	gpio_setInterruptFallEnable (gpio_instance_t *inst, u32 value)
	Set Falling Edge Interrupt Enable.
void	gpio_setInterruptHighEnable (gpio_instance_t *inst, u32 value)
	Set High Level Interrupt Enable.
void	gpio_setInterruptLowEnable (gpio_instance_t *inst, u32 value)
	Set Low Level Interrupt Enable.

Function Documentation

gpio_applyConfig()

void gpio_applyConfig

(

gpio_instance_t *

inst

)

#include <gpio.h>

Apply stored GPIO configuration to hardware.

Writes all configuration values to the corresponding hardware registers.

Parameters

inst	Pointer to GPIO instance.

Definition at line 87 of file gpio.c.

gpio_getInput()

u32 gpio_getInput

(

gpio_instance_t *

inst

)

#include <gpio.h>

Read GPIO Input Register.

Parameters

inst	Pointer to GPIO instance.

Returns

Current state of the input pins.

Definition at line 52 of file gpio.c.

gpio_getInterruptFallEnable()

u32 gpio_getInterruptFallEnable

(

gpio_instance_t *

inst

)

#include <gpio.h>

Get Falling Edge Interrupt Mask.

Parameters

inst	Pointer to GPIO instance.

Returns

The current falling edge interrupt enable mask.

Definition at line 72 of file gpio.c.

gpio_getInterruptHighEnable()

u32 gpio_getInterruptHighEnable

(

gpio_instance_t *

inst

)

#include <gpio.h>

Get High Level Interrupt Mask.

Parameters

inst	Pointer to GPIO instance.

Returns

The current high level interrupt enable mask.

Definition at line 77 of file gpio.c.

gpio_getInterruptLowEnable()

u32 gpio_getInterruptLowEnable

(

gpio_instance_t *

inst

)

#include <gpio.h>

Get Low Level Interrupt Mask.

Parameters

inst	Pointer to GPIO instance.

Returns

The current low level interrupt enable mask.

Definition at line 82 of file gpio.c.

gpio_getInterruptRiseEnable()

u32 gpio_getInterruptRiseEnable

(

gpio_instance_t *

inst

)

#include <gpio.h>

Get Rising Edge Interrupt Mask.

Parameters

inst	Pointer to GPIO instance.

Returns

The current rising edge interrupt enable mask.

Definition at line 67 of file gpio.c.

gpio_getOutput()

u32 gpio_getOutput

(

gpio_instance_t *

inst

)

#include <gpio.h>

Get stored GPIO Output Value.

Parameters

inst	Pointer to GPIO instance.

Returns

The value currently set in the output register.

Definition at line 57 of file gpio.c.

gpio_getOutputEnable()

u32 gpio_getOutputEnable

(

gpio_instance_t *

inst

)

#include <gpio.h>

Get stored GPIO Output Enable Mask.

Parameters

inst	Pointer to GPIO instance.

Returns

The current output enable (direction) mask.

Definition at line 62 of file gpio.c.

gpio_setInterruptFallEnable()

void gpio_setInterruptFallEnable	(	gpio_instance_t *	inst,
		u32	value )

#include <gpio.h>

Set Falling Edge Interrupt Enable.

Parameters

inst	Pointer to GPIO instance.
value	Bitmask where 1 = Enable Interrupt.

Definition at line 37 of file gpio.c.

gpio_setInterruptHighEnable()

void gpio_setInterruptHighEnable	(	gpio_instance_t *	inst,
		u32	value )

#include <gpio.h>

Set High Level Interrupt Enable.

Parameters

inst	Pointer to GPIO instance.
value	Bitmask where 1 = Enable Interrupt.

Definition at line 42 of file gpio.c.

gpio_setInterruptLowEnable()

void gpio_setInterruptLowEnable	(	gpio_instance_t *	inst,
		u32	value )

#include <gpio.h>

Set Low Level Interrupt Enable.

Parameters

inst	Pointer to GPIO instance.
value	Bitmask where 1 = Enable Interrupt.

Definition at line 47 of file gpio.c.

gpio_setInterruptRiseEnable()

void gpio_setInterruptRiseEnable	(	gpio_instance_t *	inst,
		u32	value )

#include <gpio.h>

Set Rising Edge Interrupt Enable.

Parameters

inst	Pointer to GPIO instance.
value	Bitmask where 1 = Enable Interrupt.

Definition at line 32 of file gpio.c.

gpio_setOutput()

void gpio_setOutput	(	gpio_instance_t *	inst,
		u32	value )

#include <gpio.h>

Set GPIO Output Value.

Parameters

inst	Pointer to GPIO instance.
value	Bitmask of pins to set high/low.

Definition at line 22 of file gpio.c.

gpio_setOutputEnable()

void gpio_setOutputEnable	(	gpio_instance_t *	inst,
		u32	value )

#include <gpio.h>

Set GPIO Output Enable (Direction).

Parameters

inst	Pointer to GPIO instance.
value	Bitmask where 1 = Output, 0 = Input.

Definition at line 27 of file gpio.c.