最近弄串口接收数据后发出去不好使写程序好难啊

只看该作者 · 2018-4-13 21:32

下面是中断函数请各位看看问题出在哪
void USART2_IRQHandler(void)
{
               int i;
      static unsigned char counter=0;       //接收十个数

if(USART_GetITStatus(USART2,USART_IT_RXNE)==SET)                //中断是否产生
{
               USART_ClearITPendingBit(USART2,USART_IT_RXNE);
            RxBuffer[counter]=USART_ReceiveData(USART2);       //接收数据
      counter++;
                        if(counter>=10)
      counter=0;
  }
      for(i=0;i<10;i++)
  {
USART_SendData(USART2,RxBuffer); //发送数据
while(USART_GetFlagStatus(USART2,USART_FLAG_TC)== RESET);//判断是否发送完
  }
}

只看该作者 · 2018-4-13 21:32

USART配置部分
void uart_init()
{
      GPIO_InitTypeDef GPIO_InitStructure;
      USART_InitTypeDef USART_InitStructure;
      NVIC_InitTypeDef NVIC_InitStructure;
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);

GPIO_InitStructure.GPIO_Pin=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_3;
GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA,&GPIO_InitStructure);

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

USART_InitStructure.USART_BaudRate=115200;
USART_InitStructure.USART_WordLength=USART_WordLength_8b;
USART_InitStructure.USART_StopBits=USART_StopBits_1;
USART_InitStructure.USART_Parity=USART_Parity_No;
USART_InitStructure.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;
USART_InitStructure.USART_HardwareFlowControl=USART_HardwareFlowControl_None;
USART_Init(USART2,&USART_InitStructure);

USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);

USART_Cmd(USART2,ENABLE);

//  USART_ClearFlag(USART2,USART_FLAG_TC);

}