int main (void) {
  int i,j;
  stm32_Init ();     // STM32 setup
  adc_Init();
  for(;;){
  ADC1->CR2  = (1<<0);
  i="ADC1-">DR;
   if(i>=0x000004ff)                              
    GPIOB->ODR &= ~LED;                           // switch on LED
   else
    GPIOB->ODR |=  LED;                           // switch off LED
  //while(USART1->SR&0x40!=0)
  while((USART1->SR&0x40)==0);
  USART1->DR = i&0xFF;
 //  Delay(2000000);
  while((USART1->SR&0x40)==0);
 
  USART1->DR = (i>>8)&0xff;
   for(j=0;j<=10;j++)
   {
  Delay(2000000);
   }
     }
  }

*博客内容为网友个人发布，仅代表博主个人观点，如有侵权请联系工作人员删除。