串口3重映射问题

只看该作者 · 2012-7-18 15:11

串口3重映射到PC10，PC11现在只能发送，但是进不去接收中断，求助，上代码
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);

GPIO_PinRemapConfig(GPIO_PartialRemap_USART3,ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOC, &GPIO_InitStructure);

DMA_DeInit(DMA1_Channel2);
DMA_tx_USART3_Configuration(1);
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(USART3, &USART_InitStructure);
USART_DMACmd(USART3,USART_DMAReq_Tx, ENABLE);
DMA_Cmd(DMA1_Channel2, ENABLE);
USART_ITConfig(USART3, USART_IT_ERR, ENABLE);
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
USART_Cmd(USART3, ENABLE);

只看该作者 · 2012-7-18 17:44

咋没人回答啊？

只看该作者 · 2012-7-18 20:50

你串口中断打开没？

只看该作者 · 2012-7-18 21:46

接收中断打开，进入中断接收

只看该作者 · 2012-7-19 16:34

4# figo20042005
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
这个不就是开接收中断的，倒数第二句

只看该作者 · 2012-7-19 19:35

本帖最后由 **kfu 于 2012-7-19 19:36 编辑

stm32f10x_it.c 这里文件里面的中断函数你写了吗

/******************************************************************************/
/*          STM32F10x Peripherals Interrupt Handlers                      */
/******************************************************************************/

/**
  * @brief  This function handles USARTx global interrupt request.
  * @param  None
  * @retval None
  */
void USART1_IRQHandler(void)
{
  if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
  {
/* Read one byte from the receive data register */
RxBuffer[RxCounter++] = (USART_ReceiveData(USART1) & 0x7F);

if(RxCounter == NbrOfDataToRead)
{
   /* Disable the USART1 Receive interrupt */
      USART_SendData(USART1, TxBuffer[TxCounter++]);
   USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);
}
  }

  if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)
  {
/* Write one byte to the transmit data register */
USART_SendData(USART1, TxBuffer[TxCounter++]);

if(TxCounter == NbrOfDataToTransfer)
{
   /* Disable the USART1 Transmit interrupt */
   USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
}
  }
}

串口3重映射问题

缘定三生

技术奇才奖章

涓涓之细流

精华达人奖章

湍急之河流

七世轮回

突出贡献奖章

沉静之湖泊

精英会员奖章

奔腾之江水

十世金身