uC/OS-II官方STM32版本运行后产生的问题

只看该作者 · 2009-4-10 14:49

在STM32社区里下载了一个“uC/OS-II官方STM32版本修改后在万利的STM32开发板上运行”的工程程序，连接目标板后编译、加载、运行都正常的，我将串口发送改为DMA传输，编译后运行，程序停止在了下面的这行：
App_Fault_ISR       B       App_Fault_ISR
产生了Hard Fault异常，请问这是怎么回事？

下面是初始化程序部分：
    USART_InitStructure.USART_BaudRate = UART1_BAND;
    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_Cmd(USART1, ENABLE);

    USART_DMACmd(USART1, USART_DMAReq_Tx, ENABLE);

    DMA_UART1Tx_StructInit();
    DMA_Init(DMA1_Channel4, &DMA_UART1TxStructure);
    DMA_ITConfig(DMA1_Channel4, DMA_IT_TC, ENABLE);

    BSP_IntVectSet(BSP_INT_ID_DMA1_CH4, DMA1_CH4_Uart1TxFinish);
    BSP_IntPrioSet(BSP_INT_ID_DMA1_CH4, DMA1_CH4_UART1Tx_UIP);
    BSP_IntEn(BSP_INT_ID_DMA1_CH4);

下面是DMA1_Channel4中断处理程序
void DMA1_CH4_Uart1TxFinish(void)
{
    DMA_ClearITPendingBit(DMA1_IT_TC1);
    Uart1_Data.TxStatus = READY;
}

下面是发送子程序
void UART1SendData(COMM_Q *pQdata)
{
    u32 temp;
    COMM_Q_char TxBuf[UART_TxBufSize];

    temp = Uart1QTx->QEntries;
    if (Uart1QTx->QEntries != 0)
    {
        if (COMM_QPopStr(Uart1QTx, TxBuf, 0)== COMM_Q_OK)
        {
            DMA_Cmd(DMA1_Channel4, DISABLE);
            DMA_UART1TxStructure.DMA_MemoryBaseAddr = (u32)TxBuf;
            DMA_UART1TxStructure.DMA_BufferSize = temp;
            DMA_Init(DMA1_Channel4, &DMA_UART1TxStructure);
            DMA_Cmd(DMA1_Channel4, ENABLE);
        }
    }
}

类型 COMM_Q_char 定义 unsigned char

只看该作者 · 2009-4-10 14:57

void DMA_UART1Tx_StructInit(void)
{
/*-------------- Reset DMA init structure parameters values ------------------*/
  /* Initialize the DMA_PeripheralBaseAddr member */
  DMA_UART1TxStructure.DMA_PeripheralBaseAddr = USART1->DR;

  /* Initialize the DMA_MemoryBaseAddr member */
  DMA_UART1TxStructure.DMA_MemoryBaseAddr = (u32)Uart1_Data.TxBuf;

  /* Initialize the DMA_DIR member */
  DMA_UART1TxStructure.DMA_DIR = DMA_DIR_PeripheralDST;

  /* Initialize the DMA_BufferSize member */
  DMA_UART1TxStructure.DMA_BufferSize = 0;

  /* Initialize the DMA_PeripheralInc member */
  DMA_UART1TxStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;

  /* Initialize the DMA_MemoryInc member */
  DMA_UART1TxStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;

  /* Initialize the DMA_PeripheralDataSize member */
  DMA_UART1TxStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;

  /* Initialize the DMA_MemoryDataSize member */
  DMA_UART1TxStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;

  /* Initialize the DMA_Mode member */
  DMA_UART1TxStructure.DMA_Mode = DMA_Mode_Normal;

  /* Initialize the DMA_Priority member */
  DMA_UART1TxStructure.DMA_Priority = DMA_Priority_Medium;

  /* Initialize the DMA_M2M member */
  DMA_UART1TxStructure.DMA_M2M = DMA_M2M_Disable;
}