STM32进不了串口中断，接收没问题，就连void USART1_IRQHandler(void)函数都进不去

只看该作者 · 2015-7-24 08:24

硬件初始化配置
//485Í¨ÐÅ¶Ë¿Ú³õÊ¼»¯ÅäÖÃ
void USART1_485_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

//  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;    //485ÊÕ·¢¿ØÖÆ¹Ü½Å
//  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP ;
//  //GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//  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_Rx | USART_Mode_Tx;
USART_Init(USART1,&USART_InitStructure);
USART_ClearFlag(USART1, USART_FLAG_TC);
  USART_Cmd(USART1,ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);    //Ê¹ÄÜ½ÓÊÕÖÐ¶Ï
//USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
GPIO_ResetBits(GPIOA, GPIO_Pin_9 | GPIO_Pin_10);

}
NVIC配置
void WR_NVIC_Configuration(void)
{
NVIC_InitTypeDef NVIC_InitStructure;
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}