STM32串口通讯程序,无法进入接收中断

ID:430126 · 发表于 2021-11-12 09:33

我感觉我的配置部分是没有问题的，就是不知道哪里出了问题
void RS485_Configuration(void)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      USART_InitTypeDef USART_InitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE);
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);

      //RS485接收发送使能，不需接线，只需要电平信号
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_Init(GPIOB, &GPIO_InitStructure);

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;       //TX
      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_3;       //RX
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
      GPIO_Init(GPIOA, &GPIO_InitStructure);

      USART_InitStructure.USART_BaudRate = 9600;
      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(USART2, &USART_InitStructure);

      USART_ITConfig(USART2, USART_IT_RXNE,ENABLE);

      USART_Cmd(USART2, ENABLE);

      //默认设置为接收模式，低电平
      RS485_Receive;
}

void USART2_NVIC_Configuration(void)
{
      NVIC_InitTypeDef NVIC_InitStructure;
      NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);
}

跪求跪求，救救孩子吧

ID:980723 · 发表于 2021-11-13 22:12

其他中断能不能进？

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