alvin_ 发表于 2015-3-24 19:25:10

帮顶.................

左岸右岸 发表于 2015-3-24 22:09:46

没有复用模式就用模拟模式试试

木木鱼 发表于 2015-3-25 09:04:02

不懂，帮顶

zhangdaijin 发表于 2015-3-25 09:32:32

看看帮顶！

liangyuejie 发表于 2015-3-25 11:05:00

发现了一点问题，但问题最终没有解决。看似一进中断就死机

// Enable USART interrupt
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
      //USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
      
      // Enable USART
    USART_Cmd(USART1, ENABLE);
      
      #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART1 CMD enabled! \n");
      #endif
      
      // Initialize USART interrupt on NVIC
      NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0xF;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

    NVIC_Init(&NVIC_InitStructure);

问题： 使能中断不能在使能NVIC 表格之前

liangyuejie 发表于 2015-3-25 11:32:00

回12楼： 不是没有复用模式，是没有复用时钟

拼命三郎 发表于 2015-3-25 12:45:35

拼命三郎 发表于 2015-3-25 12:46:50

安 发表于 2015-3-25 14:54:57

优先级不对吧，你改成0试试。这我得看一下M4内核手册。

liangyuejie 发表于 2015-3-25 16:44:11

谢谢大家，同样的程序，因泡桐样例程序之后，工作正常了：


// NVIC configration
    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
   
    // USART configuation
    USART_Config();

void USART_Config_USART1()
{       
        GPIO_InitTypeDef    GPIO_InitStructure;
        USART_InitTypeDef   USART_InitStructure;
        NVIC_InitTypeDef    NVIC_InitStructure;
       
        // Enable GPIO clock
    RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
       
        // Enable USART clock
        RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
       
    // Configure USART Tx as alternate function
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
        GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
       
    GPIO_Init(GPIOA, &GPIO_InitStructure);
       
        // Configure USART Rx as alternate function
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
        GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
        GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
       
    GPIO_Init(GPIOA, &GPIO_InitStructure);
       
        // Config AF pin
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);

    // Initialize USART
    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);
       
        // Enable USART
    USART_Cmd(USART1, ENABLE);       
        #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART1 enabled! \n");
        #endif
   
    // Initialize USART interrupt on NVIC
        NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x0;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0xF;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

    NVIC_Init(&NVIC_InitStructure);       
        #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART1 NVIC enabled! \n");
        #endif
   
    // Enable USART interrupt
    USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);   
    #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART1 IT_RXNE enabled! \n");
        #endif
   
        //USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
    #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART1 IT_TXE enabled! \n");
        #endif       
}

void USART_Config()
{
        USART_Config_USART1();
    #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART1 configuration finished! \n");
        #endif
   
    #if defined(INNO_DEBUG)
                USART1_SendDataStrings("USART all configuration finished! \n");
        #endif
}

it.c
void USART1_IRQHandler(void)
{
    uint16_t receiveData = 0;
   
    if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
    {
      receiveData = USART_ReceiveData(USART1);
      
      USART1_SendDataCharacter(receiveData);
}
}

USART_GetITStatus && USART_ReceiveData
USART_GetFlagStatus && USART_ReceiveData
软件流清标志位都可



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查看完整版本: stmf429 usart1 进不了接收中断， 轮询可以接收