void My USART1_Init(void)	{			NVIC_InitTypeDef NVIC_InitStruct;		GPIO_InitTypeDef GPIO_InitStrue; 		USART_InitTypeDef USART_InitStruct;						RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);		RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);		GPIO_InitStrue.GPIO_Pin=GPIO_Pin_9; 		GPIO_InitStrue.GPIO_Mode=GPIO_Mode_AF_PP;		GPIO_InitStrue.GPIO_Speed=GPIO_Speed_10MHz;		GPIO_Init(GPIOA,&GPIO_InitStrue);				GPIO_InitTypeDef GPIO_InitStrue; 		RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);		RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1,ENABLE);		GPIO_InitStrue.GPIO_Pin=GPIO_Pin_10; 		GPIO_InitStrue.GPIO_Mode=GPIO_Mode_IN_FLOATING;		GPIO_InitStrue.GPIO_Speed=GPIO_Speed_10MHz;		GPIO_Init(GPIOA,&GPIO_InitStrue);				USART_InitStruct.USART_BaudRate=115200;		USART_InitS0truct.USART_WordLength=USART_WordLength_8b;		USART_InitStruct.USART_Parity=USART_Parity_No;		USART_InitStruct.USART_StopBits=USART_StopBits_1;		USART_InitStruct.USART_Mode=USART_Mode_Rx|USART_Mode_Tx;		USART_Init(USART1,&USART_InitStruct)				USART_Cmd(USART1,ENABLE);		USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);		USART_InitStruct.NVIC_IRQChannel=USART1_IRQn;		USART_InitStruct.NVIC_IRQChannelPreemptionPriority=1;		USART_InitStruct.NVIC_IRQChannelSubPriority=1;		USART_InitStruct.NVIC_IRQChannelCmd=ENABLE;		NVIC_Init(&NVIC_InitStruct);		}	void USART1_IRQHandler(void)	{		int res;		if(USART_GetITStatus(USART1,USART_IT_RXNE))			{				res=USART_ReceiveData(USART1);				USART_SendData(USART1,res);			}	}