STM32串口接收字符串 存入STM32自带内存，然后读出通过串口发出去

zcswtt

***********中断接收串口字符串**********

void USART1_IRQHandler(void)
{
 uint8_t ch[20];
 int i;
 if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
 {  
     //ch = USART1->DR;
    ch = USART_ReceiveData(USART1);
    i++;
  
 }
 FLASH_WriteByte (WRIT_START_ADDR ,ch,20) ;存入FLASH
}

***********存入FLASH**********

void FLASH_WriteByte (uint32_t addr ,uint8_t *p,u16 Byte_Num) 
{
  uint32_t HalfWord;
   Byte_Num = Byte_Num/2;
  FLASH_Unlock();
  NbrOfPage=(WRIT_END_ADDR-WRIT_START_ADDR)/FLASH_PAGE_SIZE;
  FLASH_ClearFlag(FLASH_FLAG_BSY|FLASH_FLAG_EOP|FLASH_FLAG_PGERR|FLASH_FLAG_WRPRTERR);
  for( EraseCounter=0;( EraseCounter<NbrOfPage)&&(FLASHStatus==FLASH_COMPLETE);EraseCounter++)
  {
    FLASHStatus=FLASH_ErasePage(WRIT_START_ADDR+(FLASH_PAGE_SIZE*EraseCounter));
  }
  Address = WRIT_START_ADDR;
  if (FLASHStatus == FLASH_COMPLETE)
  {
   while(Byte_Num --)
          {
      HalfWord=*(p++);
      HalfWord|=*(p++)<<8;
      FLASH_ProgramHalfWord(addr, HalfWord);
      addr += 2;
          }
  }
  
  FLASH_Lock();//??
}

***********读取FLASH**********

int main(void)
{
 USART1_Config();
 NVIC_Configuration();
  FLASH_ReadByte(WRIT_START_ADDR , tempdata , 20); 

  for( k=0; k<20; k++ )
   printf("%ch\r\n", tempdata[k]);
}
void FLASH_ReadByte(uint32_t addr , uint8_t *p , uint16_t Byte_Num)
  {
    while(Byte_Num--)
    {
     *(p++)=*((uint8_t*)addr++);
    }
  }

上面代码编译无错误 但串口发不出数据 是不是数据没有存入FLASH

正点原子

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陈恩啊

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