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//USART1发送数据 --------------------------------------------------------------/
void USART1_Putchar(u8 ch)
{
 USART_SendData(USART1, ch);
 //等待数据发送完毕
 while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);
}

//USART1接收数据
u8 USART1_Getchar(void)
{
 //while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE)== RESET);
 while(USART_GetITStatus(USART1, USART_IT_RXNE) == RESET);

 //返回接收数据
 return(USART_ReceiveData(USART1));
}