stm32f4_gpio.c File Reference

Implementation for toggling the red LED onboard the stm32f446re development board. More...

#include "stm32f4xx.h"
#include "gpio.h"

Include dependency graph for stm32f4_gpio.c:

Macros
#define	GPIOAEN   (1U << 0)
#define	PIN5   (1U << 5)
#define	LED_PIN   (PIN5)

Functions
hal_status_t	hal_gpio_init ()
	Initialize the module. Must be called only once prior to using toggle. More...
hal_status_t	hal_gpio_toggle_led ()
	Toggle the onboard LED. More...

Detailed Description

Implementation for toggling the red LED onboard the stm32f446re development board.

Copyright (c) 2025 Cory McKiel. Licensed under the MIT License. See LICENSE file in the project root.

Macro Definition Documentation

GPIOAEN

#define GPIOAEN   (1U << 0)

Bit to enable GPIO port A.

LED_PIN

#define LED_PIN   (PIN5)

The onboard LED is wired to GPIO port A, pin 5.

PIN5

#define PIN5   (1U << 5)

Pin five for GPIO port A.

Function Documentation

hal_gpio_init()

hal_status_t hal_gpio_init

(

)

Initialize the module. Must be called only once prior to using toggle.

Returns

HAL_STATUS_OK on success.

hal_gpio_toggle_led()

hal_status_t hal_gpio_toggle_led

(

)

Toggle the onboard LED.

Returns

HAL_STATUS_OK on success.