最近研究uCOSIII，但是今天在同时用三个串口得时候发现配置好之后三个串口发数据没有问题，USART1接收中断正常，USART2和3不能进入中断，调试跟了一下接收到数据后USART1直接到中断服务函数里，USART2和3都不能进到中断服务函数里，下面附上配置USART1-3得代码，各位帮忙看下，万分感谢！@正点原子 [mw_shl_code=applescript,true]GPIO_InitTypeDef GPIO_InitStructure;
        USART_InitTypeDef USART_InitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;
         
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1|RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOB,ENABLE);       
        RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2|RCC_APB1Periph_USART3,ENABLE);
        USART_DeInit(USART1);  //¸´Î»´®¿Ú123
        USART_DeInit(USART2);
        USART_DeInit(USART3);
       
                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_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOA, &GPIO_InitStructure);
       
                GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;       
    GPIO_Init(GPIOB, &GPIO_InitStructure);
               
                GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
    GPIO_Init(GPIOB, &GPIO_InitStructure);

   //Usart1 NVIC ÅäÖÃ

  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//ÇÀÕ¼ÓÅÏȼ¶3
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;                //×ÓÓÅÏȼ¶3
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                        //IRQͨµÀʹÄÜ
        NVIC_Init(&NVIC_InitStructure);        //¸ù¾ÝÖ¸¶¨µÄ²ÎÊý³õʼ»¯VIC¼Ä´æÆ÷
       
         //USART ³õʼ»¯ÉèÖÃ
        USART_InitStructure.USART_BaudRate = USART1BaudRate;
        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);     
       
       
        NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;       
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;               
        NVIC_Init(&NVIC_InitStructure);       
       
        USART_InitStructure.USART_BaudRate = USART2BaudRate;
        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(USART2, &USART_InitStructure);
    USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
    USART_Cmd(USART2, ENABLE);
       
       
        NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;
        NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority= 3;
        NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;       
        NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;               
        NVIC_Init(&NVIC_InitStructure);               
       
        USART_InitStructure.USART_BaudRate = USART3BaudRate;
        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(USART3, &USART_InitStructure);
    USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
    USART_Cmd(USART3, ENABLE);[/mw_shl_code]