gpio.c File Reference

Core GPIO library. More...

#include "gpio.h"
#include "core_config.h"
#include "clock.h"
#include <stm32g4xx_hal.h>

Functions
void	core_GPIO_init (GPIO_TypeDef *port, uint16_t pin, uint16_t dir, uint32_t pull)
	Initialize a GPIO pin.
void	core_GPIO_digital_write (GPIO_TypeDef *port, uint16_t pin, bool state)
	Set a digital output.
bool	core_GPIO_digital_read (GPIO_TypeDef *port, uint16_t pin)
	Read a digital input.
void	core_heartbeat_init (GPIO_TypeDef *port, uint16_t pin)
	Set a particular pin as the heartbeat LED output.
void	core_GPIO_toggle_heartbeat ()
	Toggle the heartbeat LED output.
void	core_GPIO_set_heartbeat (bool state)
	Set the state of the heartbeat LED.

Detailed Description

Core GPIO library.

This core library component is used to initialize and control GPIO pins.

Function Documentation

core_GPIO_digital_read()

bool core_GPIO_digital_read	(	GPIO_TypeDef *	port,
		uint16_t	pin )

Read a digital input.

Parameters

port	GPIO port (GPIOx)
pin	GPIO pin (GPIO_PIN_x)

Returns

The state of the pin

core_GPIO_digital_write()

void core_GPIO_digital_write	(	GPIO_TypeDef *	port,
		uint16_t	pin,
		bool	state )

Set a digital output.

Parameters

port	GPIO port (GPIOx)
pin	GPIO pin (GPIO_PIN_x)
state	The desired setting of the output

core_GPIO_init()

void core_GPIO_init	(	GPIO_TypeDef *	port,
		uint16_t	pin,
		uint16_t	dir,
		uint32_t	pull )

Initialize a GPIO pin.

Parameters

port	Port on which the pin is located (GPIOx)
pin	Pin number (GPIO_PIN_x)
dir	Direction or pin mode (GPIO_MODE_INPUT, GPIO_MODE_OUTPUT_PP, GPIO_MODE_OUTPUT_OD, GPIO_MODE_AF_PP, GPIO_MODE_AF_OD, or GPIO_MODE_ANALOG)
pull	Pullup/pulldown resistor configuration (GPIO_NOPULL, GPIO_PULLUP, GPIO_PULLDOWN)

core_GPIO_set_heartbeat()

void core_GPIO_set_heartbeat

(

bool

state

)

Set the state of the heartbeat LED.

Parameters

state

The desired setting of the output

core_heartbeat_init()

void core_heartbeat_init	(	GPIO_TypeDef *	port,
		uint16_t	pin )

Set a particular pin as the heartbeat LED output.

Parameters

port	GPIO port (GPIOx)
pin	GPIO pin (GPIO_PIN_x)