stm32串口中断1能进去，中断2进不去

只看该作者 · 2023-9-27 10:52

/****系统外设时钟设置***

void Clock_Peripheral_Init()
{
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);       RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);//
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_tiM2,ENABLE);//
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);//
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);//
}
/****I/O初始化*****
void GPIO_Configuration()
{
  GPIO_InitTypeDef GPIO_InitStructure;
      //GPIOA
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_2;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
      GPIO_Init(GPIOA, &GPIO_InitStructure);//

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10|GPIO_Pin_3;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
      GPIO_Init(GPIOA, &GPIO_InitStructure);//
}
/***UART1初始化*****
void UART1_Configuration()
{
      USART_InitTypeDef USART_InitStructure;
      USART_InitStructure.USART_BaudRate = 19200;
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;
      USART_InitStructure.USART_StopBits = USART_StopBits_1;
      USART_InitStructure.USART_Parity = USART_Parity_No;
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
      USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
      USART_Init(USART1, &USART_InitStructure);

      USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//Ê¹ÄÜ½ÓÊÕÖÐ¶Ï
      USART_Cmd(USART1, ENABLE);//´®¿Ú1ÍâÉèÊ¹ÄÜ
}
/***UART2初始化****
void UART2_Configuration()
{
      USART_InitTypeDef USART_InitStructure;
      USART_InitStructure.USART_BaudRate = 4800;
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;
      USART_InitStructure.USART_StopBits = USART_StopBits_1;
      USART_InitStructure.USART_Parity = USART_Parity_Even;
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
      USART_InitStructure.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
      USART_Init(USART2, &USART_InitStructure);

      USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
      USART_Cmd(USART2, ENABLE);
}
/***定时器2配置****
void TIM2_Configuration(void)
{
      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
      TIM_DeInit(TIM2); //³õÊ¼»¯ÎªÈ±Ê¡Öµ
      TIM_TimeBaseStructure.TIM_Period=1000;
      TIM_TimeBaseStructure.TIM_Prescaler= (72 - 1);
      TIM_TimeBaseStructure.TIM_ClockDivision=TIM_CKD_DIV       TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;       TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);
      TIM_ClearFlag(TIM2, TIM_FLAG_Update);             TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);
      TIM_Cmd(TIM2, ENABLE);
}
/****优先级*****
void NVIC_Configuration()
{
      NVIC_InitTypeDef NVIC_InitStructure;
      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
      NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;//TIME2
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;//ÏÈÕ¼ÓÅÏÈ¼¶
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

      NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

      NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);
}