sys-gpio.h File Reference

#include <io.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <types.h>
#include "log.h"

Include dependency graph for sys-gpio.h:

Go to the source code of this file.

Classes
struct	gpio_mux_t

Macros
#define	PIO_NUM_IO_BITS   5
#define	GPIO_PIN(x, y)   (((uint32_t) (x << PIO_NUM_IO_BITS)) | y)

Typedefs
typedef uint32_t	gpio_drv_t
typedef uint32_t	gpio_t

Enumerations
enum	{   GPIO_INPUT = 0 , GPIO_OUTPUT = 1 , GPIO_PERIPH_MUX2 = 2 , GPIO_PERIPH_MUX3 = 3 ,   GPIO_PERIPH_MUX4 = 4 , GPIO_PERIPH_MUX5 = 5 , GPIO_PERIPH_MUX6 = 6 , GPIO_PERIPH_MUX7 = 7 ,   GPIO_PERIPH_MUX8 = 8 , GPIO_PERIPH_MUX14 = 14 , GPIO_DISABLED = 0xf }
enum	{ GPIO_LEVEL_LOW = 0 , GPIO_LEVEL_HIGH }
enum	{   GPIO_PORTA = 0 , GPIO_PORTB , GPIO_PORTC , GPIO_PORTD ,   GPIO_PORTE , GPIO_PORTF , GPIO_PORTG , GPIO_PORTH ,   GPIO_PORTI , GPIO_PORTJ , GPIO_PORTK , GPIO_PORTL ,   GPIO_PORTM , GPIO_PORTN }
enum	gpio_pull_t { GPIO_PULL_UP = 0 , GPIO_PULL_DOWN = 1 , GPIO_PULL_NONE = 2 }

Functions
void	sunxi_gpio_init (gpio_t pin, int cfg)
	Initialize the specified GPIO pin with the given configuration.
void	sunxi_gpio_set_value (gpio_t pin, int value)
	Set the value of the specified GPIO pin.
int	sunxi_gpio_read (gpio_t pin)
	Read the value of the specified GPIO pin.
void	sunxi_gpio_set_pull (gpio_t pin, enum gpio_pull_t pull)
	Set the pull configuration for the specified GPIO pin.
void	sunxi_gpio_set_drv (gpio_t pin, gpio_drv_t drv)
	Sets the drive strength of a Sunxi GPIO pin.

Macro Definition Documentation

GPIO_PIN

#define GPIO_PIN	(		x,
			y
	)		(((uint32_t) (x << PIO_NUM_IO_BITS)) | y)

PIO_NUM_IO_BITS

#define PIO_NUM_IO_BITS   5

Typedef Documentation

gpio_drv_t

typedef uint32_t gpio_drv_t

gpio_t

typedef uint32_t gpio_t

Enumeration Type Documentation

anonymous enum

anonymous enum

Enumerator
GPIO_INPUT
GPIO_OUTPUT
GPIO_PERIPH_MUX2
GPIO_PERIPH_MUX3
GPIO_PERIPH_MUX4
GPIO_PERIPH_MUX5
GPIO_PERIPH_MUX6
GPIO_PERIPH_MUX7
GPIO_PERIPH_MUX8
GPIO_PERIPH_MUX14
GPIO_DISABLED

anonymous enum

anonymous enum

Enumerator
GPIO_LEVEL_LOW
GPIO_LEVEL_HIGH

anonymous enum

anonymous enum

Enumerator
GPIO_PORTA
GPIO_PORTB
GPIO_PORTC
GPIO_PORTD
GPIO_PORTE
GPIO_PORTF
GPIO_PORTG
GPIO_PORTH
GPIO_PORTI
GPIO_PORTJ
GPIO_PORTK
GPIO_PORTL
GPIO_PORTM
GPIO_PORTN

gpio_pull_t

enum gpio_pull_t

Enumerator
GPIO_PULL_UP
GPIO_PULL_DOWN
GPIO_PULL_NONE

Function Documentation

sunxi_gpio_init()

void sunxi_gpio_init	(	gpio_t	pin,
		int	cfg
	)

Initialize the specified GPIO pin with the given configuration.

Parameters

pin	The GPIO pin to initialize.
cfg	The configuration value for the GPIO pin.

Initialize the specified GPIO pin with the given configuration.

This function initializes a Sunxi GPIO pin with the specified configuration. It sets the pin's configuration based on the provided parameters.

Parameters

pin	The GPIO pin to initialize.
cfg	The configuration value for the GPIO pin.

sunxi_gpio_read()

int sunxi_gpio_read

(

gpio_t

pin

)

Read the value of the specified GPIO pin.

Parameters

pin	The GPIO pin to read the value from.

Returns

The value (0 or 1) read from the GPIO pin.

Read the value of the specified GPIO pin.

This function reads the current value of a Sunxi GPIO pin and returns it.

Parameters

pin	The GPIO pin to read the value from.

Returns

The value of the GPIO pin (0 or 1).

sunxi_gpio_set_drv()

void sunxi_gpio_set_drv	(	gpio_t	pin,
		gpio_drv_t	drv
	)

Sets the drive strength of a Sunxi GPIO pin.

This function sets the drive strength for the specified GPIO pin.

Parameters

pin	The GPIO pin to set the drive strength for.
drv	The drive strength value to set (GPIO_DRV_LOW, GPIO_DRV_MEDIUM, or GPIO_DRV_HIGH).

sunxi_gpio_set_pull()

void sunxi_gpio_set_pull	(	gpio_t	pin,
		enum gpio_pull_t	pull
	)

Set the pull configuration for the specified GPIO pin.

Parameters

pin	The GPIO pin to set the pull configuration for.
pull	The pull configuration to be set for the GPIO pin.

Set the pull configuration for the specified GPIO pin.

This function sets the pull-up, pull-down, or no pull configuration for the specified GPIO pin.

Parameters

pin	The GPIO pin to set the pull configuration for.
pull	The pull configuration to set (GPIO_PULL_UP, GPIO_PULL_DOWN, or GPIO_PULL_NONE).

sunxi_gpio_set_value()

void sunxi_gpio_set_value	(	gpio_t	pin,
		int	value
	)

Set the value of the specified GPIO pin.

Parameters

pin	The GPIO pin to set the value for.
value	The value to be set (0 or 1) for the GPIO pin.

Set the value of the specified GPIO pin.

This function sets the value of a Sunxi GPIO pin to the specified value (0 or 1).

Parameters

pin	The GPIO pin to set the value for.
value	The value to set (0 or 1).