STM32 interrupt configuration self-study summary

Simply record the interrupt configuration instructions of STM32!

----The first part is---interrupt vector table-----

--------This is just a simple reference----Different versions are slightly different--but they are basically the same----You can search for it in the startup file---startup_stm32f10x_hd.s.

----Part 2---Interrupt priority configuration

static void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1); //Grouping

  NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn; //Main place
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //Preemption
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //Sub-priority
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}
----Part 3---Interrupt port configuration

void EXTI_PA0_Config(void)
{
  GPIO_InitTypeDef GPIO_InitStructure; 
  EXTI_InitTypeDef EXTI_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO,ENABLE);

  NVIC_Configuration();

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;       
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; //Port pull-up
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0); //PA0 is the external interrupt input
  EXTI_InitStructure.EXTI_Line = EXTI_Line0;  
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //Interrupt mode---the other is event mode
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling; //The trigger mode is falling edge
  EXTI_InitStructure.EXTI_LineCmd = ENABLE; //Enable
  EXTI_Init(&EXTI_InitStructure); 
}

----Part 4---Interrupt Function

void EXTI0_IRQHandler(void)
{
  if(EXTI_GetITStatus(EXTI_Line0) != RESET) //Generate corresponding interrupt
  {
    .........................
    EXTI_ClearITPendingBit(EXTI_Line0); //Clear interrupt flag bit
  }  
}