STM32F411 configures GPIO input and output (standard library)

Preface

This blog is purely code sharing

Enter code

The structure must be configured completely ~ otherwise the output will be abnormal. Please pay attention to this.

void KEY_Init(void) //IO初始化
{
    
     
  GPIO_InitTypeDef GPIO_InitStructure;
  
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
  
  /* Configure C13 pin(PC13) in output function */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1|GPIO_Pin_3;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;  
  GPIO_Init(GPIOB, &GPIO_InitStructure);
}

output code

The structure must be configured completely ~ otherwise the output will be abnormal. Please pay attention to this.

void GPIO_Config(void)
{
    
    

  GPIO_InitTypeDef GPIO_InitStructure;
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;  
  GPIO_Init(GPIOC, &GPIO_InitStructure);
   
}