gpio.c File Reference

Wii GPIO. More...

#include "gpio.h"

Macros
#define	GPIO_OUT   (*(volatile uint32_t*)0xCD8000C0)
#define	GPIO_DIR   (*(volatile uint32_t*)0xCD8000C4)
#define	GPIO_IN   (*(volatile uint32_t*)0xCD8000C8)
#define	GPIO_INTLVL   (*(volatile uint32_t*)0xCD8000CC)
#define	GPIO_INTFLAG   (*(volatile uint32_t*)0xCD8000D0)
#define	GPIO_INTMASK   (*(volatile uint32_t*)0xCD8000D4)
#define	GPIO_STRAPS   (*(volatile uint32_t*)0xCD8000D8)
#define	GPIO_ENABLE   (*(volatile uint32_t*)0xCD8000DC)

Functions
void	gpio_write (uint32_t bit, bool set)
	Writes a GPIO output.
bool	gpio_read (uint32_t bit)
	Reads a GPIO Input.
void	gpio_set_direction (uint32_t bit, bool direction)
	Sets the direction of the GPIO.

Detailed Description

Wii GPIO.

Control the GPIO controller on the Wii

Author

Samuel Fitzsimons (rainbain)

Date

2025 @license MIT (see LICENSE file)

Function Documentation

gpio_read()

bool gpio_read

(

uint32_t

bit

)

Reads a GPIO Input.

Reads the value of a GPIO Input

Parameters

bit	Bit to read value of

gpio_set_direction()

void gpio_set_direction	(	uint32_t	bit,
		bool	direction )

Sets the direction of the GPIO.

Sets the direction of a bit.

This is set to the expected value before the game runs.

Parameters

bit	Bit to set
Direction	False = Input, True = Output

gpio_write()

void gpio_write	(	uint32_t	bit,
		bool	set )

Writes a GPIO output.

Writes the bit to the GPIO controller.

Parameters

bit	Bit to set/clear