STM32F103 uart的配置

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//  Copyright : 
//  File Name : 
// Description:
//Targer Board:
//   Author   :
//   Date     :
//   Version  : V00
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#include "Usart2.h"
/********************************************************************
Function: Uart?????????
INPUT	:
OUTPUT	:
NOTE	:
********************************************************************/
void fun_UartInit( unsigned  int bound)
{
	//GPIO端口設置
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);	//使能USART1，GPIOA時鐘
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
	//USART1_TX   GPIOA.9
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PA.9
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;	//複用推輓輸出
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.9

	//USART1_RX	  GPIOA.10初始化
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;//PA10
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空輸入
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.10  
	//USART1_WAKEUP	  GPIOA.5初始化
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;//PA10
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;//浮空輸入
	GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.10 
	
	//GPIO_SetBits(GPIOA,GPIO_Pin_5);
	//GPIO_ResetBits(GPIOA,GPIO_Pin_5);
	
	//Usart1 NVIC 配置
	NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=3 ;//搶佔優先級3
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;		//子優先級3
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;			//IRQ通道使能
	NVIC_Init(&NVIC_InitStructure);	//根據指定的參數初始化VIC寄存器

	//USART 初始化設置
	USART_InitStructure.USART_BaudRate = bound;//串口波特率
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字長爲8位數據格式
	USART_InitStructure.USART_StopBits = USART_StopBits_1;//一個停止位
	USART_InitStructure.USART_Parity = USART_Parity_No;//無奇偶校驗位
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//無硬件數據流控制
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;	//收發模式
	
	USART_Init(USART2, &USART_InitStructure); //初始化串口2
	USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);//開啓串口接受中斷
	//USART_ITConfig(USART2, USART_IT_TXE, ENABLE);//開啓串口接受中斷
	USART_ITConfig(USART2, USART_IT_TC, ENABLE);//
	USART_Cmd(USART2, ENABLE);                    //使能串口2
}
/********************************************************************
Function: Uart?????l???????��??????
INPUT	:
OUTPUT	:
NOTE	:
********************************************************************/
void USART2_IRQHandler(void)                	//串口1中斷服務程序
{
	
	//-------------------------------------------------
	if(USART_GetITStatus(USART2, USART_IT_RXNE) ==SET)  //接收中斷(接收到的數據必須是0x0d 0x0a結尾)
	{
		gu8v_UartRxBuf[lu8v_RxBufoffset] = USART_ReceiveData(USART2);
		if (gbv_UARTRxStart == 0)
		{
			gbv_UARTRxStart = 1;
			gu8v_Uart_Rx_Time_Out_Cnt = 0;
		}
		if (lu8v_RxBufoffset == 1)
		{
			lu8v_RxBufLength = gu8v_UartRxBuf[1] + 2;
		}
		lu8v_RxBufoffset++;
		lu8v_RxBufoffset = lu8v_RxBufoffset % UART_Length;
		if (lu8v_RxBufoffset > lu8v_RxBufLength)
		{
			lu8v_RxBufLength = 0xff;
			lu8v_RxBufoffset = 0;
			gbv_Data_Rx_Success = 1;
		}
  }
	if(USART_GetITStatus(USART2,USART_IT_ORE)==SET)
	{
		lu8v_RxBufoffset = 0;
	}
	if(USART_GetITStatus(USART2,USART_IT_NE)==SET)
	{
		lu8v_RxBufoffset = 0;
	}
	if(USART_GetITStatus(USART2,USART_IT_FE)==SET)
	{
		lu8v_RxBufoffset = 0;
	}
	if(USART_GetITStatus(USART2,USART_IT_PE)==SET)
	{
		lu8v_RxBufoffset = 0;
	}
	//-------------------------------------------------
  if(USART_GetITStatus(USART2,USART_IT_TC)==SET)
	{
		USART_ClearFlag(USART2, USART_FLAG_TC);//
		if (lu8v_TxBufLength > UART_Length) // 錕斤拷錕斤拷uart錕斤拷錕斤拷錕斤拷圍,錕斤拷錕
		{
			lu8v_TxBufLength = UART_Length; //
		}
		
		if (lu8v_TxBufoffset < lu8v_TxBufLength)
		{
			USART_SendData(USART2,gu8v_UartTxBuf[lu8v_TxBufoffset]);
			lu8v_TxBufoffset++;
		}
		else
		{
			gbv_UartTxing = 0;

		}

	}
} 
/********************************************************************
Function: UART TX 
INPUT	:
OUTPUT	:
NOTE	:
********************************************************************/
void fun_UartTxStart()
{
	SET_BT_WAKEUP_MODE_OUT_LOW();
	delay_ms(6);
	gu8v_Uart_BLE_SLEEP_DELAY = 0;
	lu8v_TxBufoffset = 1;
	lu8v_TxBufLength = gu8v_UartTxBuf[1] + 3; // ????錕斤拷??錕斤拷
	gbv_UartTxing = 1;
	USART_SendData(USART2,gu8v_UartTxBuf[0]);
}