neorv32_gpio.h File Reference

General purpose input/output port unit (GPIO) HW driver header file. More...

#include <stdint.h>

Go to the source code of this file.

Data Structures
struct	neorv32_gpio_t

Macros
IO Device: General Purpose Input/Output Port Unit (GPIO)
#define	NEORV32_GPIO   ((neorv32_gpio_t*) (NEORV32_GPIO_BASE))

Enumerations
Trigger types
enum	GPIO_TRIGGER_enum { GPIO_TRIG_LEVEL_LOW = 0b00 , GPIO_TRIG_LEVEL_HIGH = 0b01 , GPIO_TRIG_EDGE_FALLING = 0b10 , GPIO_TRIG_EDGE_RISING = 0b11 }

Functions
Prototypes
int	neorv32_gpio_available (void)
void	neorv32_gpio_pin_set (int pin, int value)
void	neorv32_gpio_pin_toggle (int pin)
uint32_t	neorv32_gpio_pin_get (int pin)
void	neorv32_gpio_port_set (uint32_t pin_mask)
void	neorv32_gpio_port_toggle (uint32_t pin_mask)
uint32_t	neorv32_gpio_port_get (void)
void	neorv32_gpio_irq_setup (int pin, int trigger)
void	neorv32_gpio_irq_enable (uint32_t pin_mask)
void	neorv32_gpio_irq_disable (uint32_t pin_mask)
uint32_t	neorv32_gpio_irq_get (void)
void	neorv32_gpio_irq_clr (uint32_t pin_mask)

Detailed Description

General purpose input/output port unit (GPIO) HW driver header file.

Macro Definition Documentation

NEORV32_GPIO

#define NEORV32_GPIO   ((neorv32_gpio_t*) (NEORV32_GPIO_BASE))

GPIO module hardware access (neorv32_gpio_t)

Function Documentation

neorv32_gpio_available()

int neorv32_gpio_available

(

void

)

Check if GPIO unit was synthesized.

Returns

0 if GPIO was not synthesized, 1 if GPIO is available.

neorv32_gpio_irq_clr()

void neorv32_gpio_irq_clr

(

uint32_t

clr_mask

)

Clear pending GPIO input interrupts via bit mask.

Parameters

[in]

clr_mask

Clear mask (bit high = clear according pending interrupt).

neorv32_gpio_irq_disable()

void neorv32_gpio_irq_disable

(

uint32_t

pin_mask

)

Disable input pin interrupt(s).

Parameters

[in]

pin_mask

Pin-IRQ enable mask (set to 1 to disable the according pin).

neorv32_gpio_irq_enable()

void neorv32_gpio_irq_enable

(

uint32_t

pin_mask

)

Enable input pin interrupt(s).

Parameters

[in]

pin_mask

Pin-IRQ enable mask (set to 1 to enable the according pin).

neorv32_gpio_irq_get()

uint32_t neorv32_gpio_irq_get

(

void

)

Get currently pending GPIO input interrupts.

Parameters

[in]

Pending

inputs (bit mask; high = pending).

neorv32_gpio_irq_setup()

void neorv32_gpio_irq_setup	(	int	pin,
		int	trigger )

Configure pin interrupt trigger.

Parameters

[in]	pin	Input pin select (0..31).
[in]	trigger	Trigger select (GPIO_TRIGGER_enum).

neorv32_gpio_pin_get()

uint32_t neorv32_gpio_pin_get

(

int

pin

)

Get single pin of GPIO's input port.

Parameters

[in]

pin

Input pin to be read (0..31).

Returns

zero if pin is low, non-zero if pin is high.

neorv32_gpio_pin_set()

void neorv32_gpio_pin_set	(	int	pin,
		int	value )

Set single pin of GPIO's output port.

Parameters

[in]	pin	Output pin number to be set (0..31).
[in]	value	Set pint high (1) or low (0).

neorv32_gpio_pin_toggle()

void neorv32_gpio_pin_toggle

(

int

pin

)

Toggle single pin of GPIO's output port.

Parameters

[in]

pin

Output pin number to be toggled (0..31).

neorv32_gpio_port_get()

uint32_t neorv32_gpio_port_get

(

void

)

Get complete GPIO input port.

Returns

Current input port state (32-bit).

neorv32_gpio_port_set()

void neorv32_gpio_port_set

(

uint32_t

pin_mask

)

Set complete GPIO output port.

Parameters

[in]

pin_mask

New output port value (32-bit).

neorv32_gpio_port_toggle()

void neorv32_gpio_port_toggle

(

uint32_t

pin_mask

)

Toggle bit in entire GPIO output port.

Parameters

[in]

pin_mask

Bit mask; set bits will toggle the according output pins (32-bit).