最近写串口通信程序接收10个数据后出去就是不好使求助各位坛友

张迪 · 发表于 2018-4-13 21:24:35

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[i]); //发送数据
while(USART_GetFlagStatus(USART2,USART_FLAG_TC)== RESET);//判断是否发送完
  }
}

张迪 · 发表于 2018-4-13 21:27:19

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);

}

ignoreY · 发表于 2018-4-13 22:55:20

void USART1_IRQHandler(void)             //′®¿ú1ÖD¶Ï·tÎñ3ìDò
{
u8 Res;
#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
OSIntEnter();
#endif
if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)  //½óêÕÖD¶Ï(½óêÕμ½μÄêy¾Y±ØDëêÇ0x0d 0x0a½áÎ2)
{
Res =USART_ReceiveData(USART1); //¶áè¡½óêÕμ½μÄêy¾Y

if((USART_RX_STA&0x8000)==0)//½óêÕÎ′íê3é
{
if(USART_RX_STA&0x4000)//½óêÕμ½áË0x0d
{
if(Res!=0x0a)USART_RX_STA=0;//½óêÕ′íÎó,ÖØDÂ¿aê¼
else USART_RX_STA|=0x8000; //½óêÕíê3éáË
}
else //»1Ã»êÕμ½0X0D
{
if(Res==0x0d)USART_RX_STA|=0x4000;
else
{
USART_RX_BUF[USART_RX_STA&0X3FFF]=Res ;
USART_RX_STA++;
if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//½óêÕêy¾Y′íÎó,ÖØDÂ¿aê¼½óêÕ
}
}
}
   }
#if SYSTEM_SUPPORT_OS //èç1ûSYSTEM_SUPPORT_OSÎaÕæ￡¬ÔòDèòaÖ§3ÖOS.
OSIntExit();
#endif
}
这是正点原子的程序，你参考一下

275891381 · 发表于 2018-4-13 23:03:50

下面是中断函数请各位看看问题出在哪
void USART2_IRQHandler(void)
{
               int i,flag=0;
      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;
flag=1;
}
  }
if(flag==1)
{
      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
  }
flag=0;
}
}