void UART5_IRQHandler(void)                	//串口1中断服务程序
{
	u8 Res;
 
	if(USART_GetITStatus(UART5, USART_IT_RXNE) != RESET)  //接收中断(接收到的数据必须是0x0d 0x0a结尾)
	{
		Res =USART_ReceiveData(UART5);//(USART1->DR);	//读取接收到的数据
		USART_RX_BUF[USART_RX_STA++]=Res;
		}
		}

if(USART_RX_STA>5)
		{
//		printf("%s",USART_RX_BUF);
			while(USART_RX_STA--)
			{
 			USART_SendData(UART5,USART_RX_BUF[im++]);
				while(USART_GetFlagStatus(UART5, USART_FLAG_TC)==RESET );
			}
			USART_RX_STA=0;
			im=0;
		}