stm32f051串口如何实现一次中断接收多个数据，欢迎拍砖指教，本人初学

liuzhide84 · 发表于 2013-5-23 09:44:10

#include<stm32f0xx.h>
uint8_t InputData[48] =" 请发送打印信息 \n";

void USART1_TX_Data(uint8_t *pData,uint16_t TX_NumByte);

int main(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  USART_InitTypeDef USART_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA|RCC_AHBPeriph_GPIOC, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);

  //PA9、PA10复用功能1
  GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_1);
  GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_1);
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9|GPIO_Pin_10;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  //串口配置
  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_HardwareFlowControl = USART_HardwareFlowControl_None;
  USART_InitStructure.USART_Mode       = USART_Mode_Rx | USART_Mode_Tx;
  USART_Init(USART1, &USART_InitStructure);
  USART_Cmd(USART1, ENABLE);
  USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
  USART_ClearFlag(USART1,USART_FLAG_TC);

  NVIC_InitStructure.NVIC_IRQChannel     = USART1_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPriority      = 4;
  NVIC_InitStructure.NVIC_IRQChannelCmd    = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  USART1_TX_Data(InputData,sizeof(InputData));
  while(1)
  {

}
}

void USART1_TX_Data(uint8_t *pData,uint16_t TX_NumByte)
{
uint16_t i;
for(i=0;i<TX_NumByte;i++)
  {
  USART_SendData(USART1,*pData++);
  while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);
  }

}

中断服务函数
void USART1_IRQHandler(void)
{
unsigned char Getdata[16];
unsigned int rdata=0,i;
for(;;)
{
  if(USART_GetITStatus(USART1,USART_IT_RXNE)==SET)
  {
   USART_ClearITPendingBit(USART1,USART_IT_RXNE);
   Getdata[rdata++]=USART_ReceiveData(USART1);
   continue;
  }
  break;

}
for(i=0;i<rdata;i++)
{
  USART_SendData(USART1,Getdata);
  while(USART_GetFlagStatus(USART1,USART_FLAG_TC)==RESET);
}
}