GPIO peripheral register map. More...

#include <stm32f401re.h>

Public Attributes
uint32_t volatile	GPIO_MODER
uint32_t volatile	GPIO_OTYPER
uint32_t volatile	GPIO_OSPEEDR
uint32_t volatile	GPIO_PUPDR
uint32_t volatile	GPIO_IDR
uint32_t volatile	GPIO_ODR
uint32_t volatile	GPIO_BSRR
uint32_t volatile	GPIO_LCKR
uint32_t volatile	GPIO_AFR [2]

Detailed Description

GPIO peripheral register map.

Each GPIO port occupies 0x400 bytes and contains the following registers. Instantiated via the GPIOA … GPIOH accessor macros.

Definition at line 95 of file stm32f401re.h.

Member Data Documentation

◆ GPIO_MODER

uint32_t volatile GPIO_REGDEF_ts::GPIO_MODER

Mode register: 2 bits per pin — input, output, AF, or analog.

Definition at line 96 of file stm32f401re.h.

◆ GPIO_OTYPER

uint32_t volatile GPIO_REGDEF_ts::GPIO_OTYPER

Output type register: 0 = push-pull, 1 = open-drain.

Definition at line 97 of file stm32f401re.h.

◆ GPIO_OSPEEDR

uint32_t volatile GPIO_REGDEF_ts::GPIO_OSPEEDR

Output speed register: 2 bits per pin — low/medium/high/very high.

Definition at line 98 of file stm32f401re.h.

◆ GPIO_PUPDR

uint32_t volatile GPIO_REGDEF_ts::GPIO_PUPDR

Pull-up/pull-down register: 2 bits per pin — none/PU/PD.

Definition at line 99 of file stm32f401re.h.

◆ GPIO_IDR

uint32_t volatile GPIO_REGDEF_ts::GPIO_IDR

Input data register: read-only, reflects pin logic levels.

Definition at line 100 of file stm32f401re.h.

◆ GPIO_ODR

uint32_t volatile GPIO_REGDEF_ts::GPIO_ODR

Output data register: write the desired output level per pin.

Definition at line 101 of file stm32f401re.h.

◆ GPIO_BSRR

uint32_t volatile GPIO_REGDEF_ts::GPIO_BSRR

Bit set/reset register: upper 16 bits reset, lower 16 bits set.

Definition at line 102 of file stm32f401re.h.

◆ GPIO_LCKR

uint32_t volatile GPIO_REGDEF_ts::GPIO_LCKR

Lock register: freezes pin configuration until next reset.

Definition at line 103 of file stm32f401re.h.

◆ GPIO_AFR

uint32_t volatile GPIO_REGDEF_ts::GPIO_AFR[2]

Alternate function registers: AFR[0] for pins 0–7, AFR[1] for pins 8–15.

Definition at line 104 of file stm32f401re.h.

The documentation for this struct was generated from the following file:

drivers/inc/stm32f401re.h

Public Attributes