STM32F407IG关于串口发送中断的开启

RspeederR · 发表于 2016-11-23 14:24:27

本帖最后由 RspeederR 于 2016-11-23 14:28 编辑

void uart_init(u32 bound){
  GPIO_InitTypeDef GPIO_InitStructure;
      USART_InitTypeDef USART_InitStructure;
      NVIC_InitTypeDef NVIC_InitStructure;

      RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB,ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);


      GPIO_PinAFConfig(GPIOB,GPIO_PinSource6,GPIO_AF_USART1);
      GPIO_PinAFConfig(GPIOB,GPIO_PinSource7,GPIO_AF_USART1);


  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
      GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
      GPIO_Init(GPIOB,&GPIO_InitStructure);

      USART_InitStructure.USART_BaudRate = bound;
      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_Rx | USART_Mode_Tx;
  USART_Init(USART1, &USART_InitStructure);
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
  USART_Cmd(USART1, ENABLE);

      USART_ClearFlag(USART1, USART_FLAG_TC);

这段程序就是串口初始化，可是我一旦在后面开启发送完成终端USART_ITConfig(USART1, USART_IT_TC, ENABLE);那么整个程序直接卡死，请问这是什么原因，怎么解决呢而且单步仿真程序正常执行，一旦全速执行就卡死，也不知道卡死在哪