M21/user/Serial.c

/*******************************************************************************************
 * File Name: Serial.c
 * Function Describe:device for serial	
 * Relate Module:
 * Explain:
	接收采用中断方式
	UART1: 连接尾插，用于与PC相连	  另外，printf映射到UART1
	UART2: 连接GPS
	UART3: 连接Modem
	全局变量g_ucUARTSel 调试选择控制，决定了3个串口的转发关系,其值通过以下3个宏控分别代表：
	COM_SEL_MCU   正常使用不转发,尾插用于MCU打印LOG或 MCU软件升级
	COM_SEL_GPS	  UART1<-->UART2,尾插用于GPS LOG打印
	COM_SEL_MODEM UART1<-->UART3,尾插用于MODEM AT momand 或模块软件升级
 * Writer:  ShiLiangWen
 * Date:	2015.1.20
********************************************************************************************/
#define THIS_FILE_ID 4
/* Includes ------------------------------------------------------------------*/
#include "includes.h"


#define USART1_DR_Base  0x40013804   
#define USART2_DR_Base  0x40004404 
#define USART3_DR_Base (u32)&USART3->DR 

unsigned char g_ucUARTSel=0;//0--MCU  1--Modem  2--GPS

//UART1 Trace
unsigned char RxBuffer1[UART1_RX_BUFFER_SIZE];
unsigned char TxBuffer1[UART1_TX_BUFFER_SIZE];
 unsigned short rx1_ct;
unsigned short g_usUart1RecvLen;
unsigned char g_ucUart1Sending;
//UART3 用于与GPS通讯
unsigned char RxBuffer3[UART3_RX_BUFFER_SIZE];
unsigned char TxBuffer3[UART3_TX_BUFFER_SIZE];
static unsigned short rx3_ct;
unsigned short g_usUart3RecvLen;

//UART2 用于与MODEM通讯
unsigned char RxBuffer2[UART2_RX_BUFFER_SIZE];
unsigned char TxBuffer2[UART2_TX_BUFFER_SIZE];
static unsigned short rx2_ct;
unsigned short g_usRx2Len;
unsigned short g_usRx2In;
unsigned short g_usRx2Out;
unsigned char g_ucUart2Sending;
/********************************************************************
*Uart1DMAInit
*串口1 DMA设置 
*串口1 发送必须用通道4，接收必须用通道5
*********************************************************************/
void Uart1DMAInit(void)
{	
	NVIC_InitTypeDef NVIC_InitStructure;
	DMA_InitTypeDef DMA_InitStructure;
	//启动DMA时钟
	RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
#if UART1_TX_USE_DMA!=0
	//DMA 通道4用于UART1 TX
	DMA_DeInit(DMA1_Channel4);
	DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&USART1->DR);//外设地址
	DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)TxBuffer1;//内存地址
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;//DMA传输方向单向
	DMA_InitStructure.DMA_BufferSize = UART1_TX_BUFFER_SIZE; //设置DMA在传输时缓冲区的长度
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //设置DMA的外设递增模式
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;	//设置DMA的内存递增模式
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;//外设数据字长	
	DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;//内存数据字长
	DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //设置DMA的传输模式
	DMA_InitStructure.DMA_Priority = DMA_Priority_Low;	//设置DMA的优先级别
	DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//设置DMA的2个memory中的变量互相访问
	DMA_Init(DMA1_Channel4,&DMA_InitStructure);
//	//DMA中断设置
//	NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel4_IRQn;
//	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
//	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
//	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
//	NVIC_Init(&NVIC_InitStructure);
	DMA_ITConfig(DMA1_Channel4,DMA_IT_TC,ENABLE);//中断设置
	DMA_Cmd(DMA1_Channel4, DISABLE); //等到需要发送的时候再使能
#endif	      
	//DMA 通道5用于UART1 RX
	DMA_DeInit(DMA1_Channel5);
	DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&USART1->DR);//外设地址
	DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RxBuffer1;//内存地址
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//DMA传输方向单向
	DMA_InitStructure.DMA_BufferSize = UART1_RX_BUFFER_SIZE; //设置DMA在传输时缓冲区的长度
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //设置DMA的外设递增模式
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;	//设置DMA的内存递增模式
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;//外设数据字长	
	DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;//内存数据字长
	DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //设置DMA的传输模式
	DMA_InitStructure.DMA_Priority = DMA_Priority_High;	//设置DMA的优先级别
	DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//设置DMA的2个memory中的变量互相访问
	DMA_Init(DMA1_Channel5,&DMA_InitStructure);  
	//DMA_Cmd(DMA1_Channel5, ENABLE); //使能通道                                        
}
/********************************************************************
*Uart2DMAInit
*串口2 DMA设置 
*串口2 发送必须用通道7，接收必须用通道6
*********************************************************************/
void Uart2DMAInit(void)
{	

	NVIC_InitTypeDef NVIC_InitStructure;
	DMA_InitTypeDef DMA_InitStructure;
	//启动DMA时钟
	RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE);
#if UART2_TX_USE_DMA==1
	//DMA 通道2用于UART3 TX
	DMA_DeInit(DMA1_Channel7);
	DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&USART2->DR);//外设地址
	DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)TxBuffer2;//内存地址
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralDST;//DMA传输方向单向
	DMA_InitStructure.DMA_BufferSize = UART3_TX_BUFFER_SIZE; //设置DMA在传输时缓冲区的长度
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //设置DMA的外设递增模式
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;	//设置DMA的内存递增模式
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;//外设数据字长	
	DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;//内存数据字长
	DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //设置DMA的传输模式
	DMA_InitStructure.DMA_Priority = DMA_Priority_High;	//设置DMA的优先级别
	DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//设置DMA的2个memory中的变量互相访问
	DMA_Init(DMA1_Channel7,&DMA_InitStructure);

	DMA_ITConfig(DMA1_Channel7,DMA_IT_TC,ENABLE);//中断设置
#else
  DMA_ITConfig(DMA1_Channel7,DMA_IT_TC,DISABLE);
#endif
  DMA_Cmd(DMA1_Channel7, DISABLE);


	//DMA 通道3用于UART3 RX
	DMA_DeInit(DMA1_Channel6);
	DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&USART2->DR);//外设地址
	DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RxBuffer2;//内存地址
	DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralSRC;//DMA传输方向单向
	DMA_InitStructure.DMA_BufferSize = UART3_RX_BUFFER_SIZE; //设置DMA在传输时缓冲区的长度
	DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable; //设置DMA的外设递增模式
	DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;	//设置DMA的内存递增模式
	DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;//外设数据字长	
	DMA_InitStructure.DMA_MemoryDataSize = DMA_PeripheralDataSize_Byte;//内存数据字长
	DMA_InitStructure.DMA_Mode = DMA_Mode_Normal; //设置DMA的传输模式
	DMA_InitStructure.DMA_Priority = DMA_Priority_VeryHigh;	//设置DMA的优先级别
	DMA_InitStructure.DMA_M2M = DMA_M2M_Disable;//设置DMA的2个memory中的变量互相访问
	DMA_Init(DMA1_Channel6,&DMA_InitStructure);  
	DMA_Cmd(DMA1_Channel6, DISABLE); //使能通道       
	
}

/*********************************************************************************************
*UART2RxTxISRHandler
*串口2中断处理函数
**********************************************************************************************/

void UART2RxTxISRHandler(void)
{
	__IO unsigned char uart_data;
	//----接收中断--------
	if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)
	{
		uart_data = USART_ReceiveData(USART2); // Read one byte from the receive data register

		//Modem Trace
		if(g_ucUARTSel==COM_SEL_MODEM){
			USART_SendData(USART1, uart_data);
			USART_ClearITPendingBit(USART2,  USART_IT_RXNE);  //清除中断标志 
			return;
		}
		//MCU 处理Modem
		if(g_usRx2Len<UART2_RX_BUFFER_SIZE){	
			RxBuffer2[g_usRx2In]=uart_data;
			if(++g_usRx2In>=UART2_RX_BUFFER_SIZE)g_usRx2In=0;
			g_usRx2Len++;
			if(uart_data==0x0a)isr_sem_send(&ModemUartSem);
		}
		//isr_sem_send(&ModemUartSem);
		USART_ClearITPendingBit(USART2,  USART_IT_RXNE); //清除中断标志 
	}
	if(USART_GetFlagStatus(USART2,USART_FLAG_ORE)==SET)
	{
		USART_ReceiveData(USART2);    //
		USART_ClearFlag(USART2,USART_FLAG_ORE); // 
	}
	
}

 /**********************************************************************
>112/r/n 最少6字节

************************************************************************/
void Uart2RecvProcess(void)
{
unsigned short Rx2Len;
	unsigned short out;
	char preData[20];
	unsigned short i,j,len;
	char num[5];
	char data,flag;
	
	
//	//少于8字节不处理
//	if(g_usRx2Len<8)return;
	
	//缓冲区满，清空缓冲区
	if(g_usRx2Len>(UART2_RX_BUFFER_SIZE-2)){
		USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
		g_usRx2In=0;
		g_usRx2Len=0;
		g_usRx2Out=0;
		USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);
		SlwTrace(DEBUG,"[Rx2Buf Over]",1); 
		return;
	}
	//锁定环形缓冲区当前状态，
	Rx2Len=g_usRx2Len;
	
//	USART_ITConfig(USART2, USART_IT_RXNE, DISABLE);
//	g_usRx2Len=g_usRx2Len-i;
//	USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);

//	//少于8字节不处理
//	if(Rx2Len<4)return;

	//预读取前n字节 n最少4，最大16 为后续处理提供条件
	if(Rx2Len<16)len=Rx2Len;
	else len=16;
	
	out=g_usRx2Out;
	for(i=0;i<len;i++){
		preData[i]=RxBuffer2[out];
		if(++out>UART2_RX_BUFFER_SIZE)out=0;
	}
	RunMake(THIS_FILE_ID);
	//判断是否为OK

	//判断前8字节是否等于"+TCPRECV"，如果等于则特殊处理，如果不等则找到"/r/n"作为结束符
	if(0!=ModemStrCmp(preData,"+TCP"))
	{
		//非"+TCPRECV",则直接找到最近的0x0A作为结束符，读取并形成一包消息
		out=g_usRx2Out;
		for(i=0;i<Rx2Len;i++)
	  {
			if(RxBuffer2[out]==0x0A)break;
			if(++out>=UART2_RX_BUFFER_SIZE)out=0;
		}
		
		//123/n/0
		
		if(i<Rx2Len)
		{
			
			//找到了0x0A，从环形缓冲区中读取数据并拷贝到消息缓冲区，发送消息
			len=i+1;//消息长度
			RunMake(THIS_FILE_ID);
			
			if(len<(MODEM_AT_MSG_DATA_LEN-2))
			{
				sutAtm.MsgLen=len;
				for(i=0;i<len;i++)
				{
					sutAtm.MsgData[i]=RxBuffer2[g_usRx2Out];
					if(++g_usRx2Out>=UART2_RX_BUFFER_SIZE)g_usRx2Out=0;
				}
				sutAtm.MsgData[i]=0;//消息最后补0作为结束符，方便打印
				
				//更新g_usRx3Len，需要防止中断修改冲突
				USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); //DISABLE UART3 RX IT
				g_usRx2Len=g_usRx2Len-len;
				USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //ENABLE UART3 RX IT
				RunMake(THIS_FILE_ID);
				//SlwTrace(INF,"/*********start*************/",1);
				SlwTrace(INF,sutAtm.MsgData,1);
				
				//发送消息
				sutAtm.MsgLen+=1;
				if(0 != MsgQueuePost(sutAtm.MsgData,sutAtm.MsgLen)) SlwTrace(INF, "MQueue Full1",1);
				return;
			}else
			{//消息队列的内存块长度不够，需要特殊处理,扔掉后面部分
				sutAtm.MsgLen=len;
				for(i=0;i<len;i++)
				{
					data=RxBuffer2[g_usRx2Out];
					if(i<(MODEM_AT_MSG_DATA_LEN-2))sutAtm.MsgData[i]=data;
					if(++g_usRx2Out>=UART2_RX_BUFFER_SIZE)g_usRx2Out=0;
				}
				sutAtm.MsgData[MODEM_AT_MSG_DATA_LEN-1]=0;//消息最后补0作为结束符
			//更新g_usRx3Len，需要防止中断修改冲突
				USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); //DISABLE UART2 RX IT
				g_usRx2Len=g_usRx2Len-len;
				USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //ENABLE UART2 RX IT
				RunMake(THIS_FILE_ID);
				//发送消息
				if(0 != MsgQueuePost(sutAtm.MsgData,sutAtm.MsgLen)) SlwTrace(INF, "MQueue Full2",1);
				return;
			}
		}
		return;
	}


}


void Uart1Send(char *txbuf,int len)
{
	int i;
	for(i=0;i<len;i++){
		USART_SendData(USART1,txbuf[i]);
		while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);	
	}
}
void Uart2Send(unsigned char *txbuf,unsigned short len)
{
	int i;
	for(i=0;i<len;i++){
		USART_SendData(USART2,txbuf[i]);
		while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET);	
	}
}
/*************************************************************************************
 * 函数名：USART1_Send
 * 描述  ：串口1发送数据函数  通过DMA实现
 * 输入  ：要发送数据的首地址，发送数据的个数。发送数据的地址任意，并不用固定为Txd1Buffer
 * 输出  : 无
 * 举例  ：Usart1_Send("Hello word!",11); Usart1_Send(Txd1Buffer,11);
 **************************************************************************************/
void USART1_Send(char *pbuffer, unsigned short size)
{
	
#if UART1_TX_USE_DMA==1
	char buf[20];
	unsigned short i;
	unsigned short len;
	char *pData;
	if(size==0)return;
	//等待上一次发送完成
	while(g_ucUart1Sending!=0){
		os_dly_wait(1);
	}
	
#if	0 //增加时间戳
	sprintf((char *)TxBuffer1,"%010u: ",os_time_get());
	if(size>(UART1_TX_BUFFER_SIZE-12))len=UART1_TX_BUFFER_SIZE-12;
	else len=size;
	len+=12;
	pData=(char *)&TxBuffer1[12];
#else
	if(size>UART1_TX_BUFFER_SIZE)len=UART1_TX_BUFFER_SIZE;
	else len=size;
	pData=(char *)&TxBuffer1[0];
#endif	
	
	
	for(i=0;i<len;i++)pData[i]=pbuffer[i];
	DMA_Cmd (DMA1_Channel4,DISABLE);
	DMA1_Channel4->CMAR =  (u32)TxBuffer1;
	DMA1_Channel4->CNDTR = len;
	g_ucUart1Sending=1; 
	DMA_Cmd (DMA1_Channel4,ENABLE);                                        //使能DMA,开始发送                                                                            //数据发送中                                                                             //灯亮
#endif
}

void USART1_SendNew(char *pbuffer, unsigned short size,char needEnd)
{
	
#if UART1_TX_USE_DMA==1
	char buf[20];
	unsigned short i;
	unsigned short len;
	char *pData;
	if(size==0)return;
	//等待上一次发送完成
	while(g_ucUart1Sending!=0){
		os_dly_wait(1);
	}
	
	if(size>UART1_TX_BUFFER_SIZE)len=UART1_TX_BUFFER_SIZE;
	else len=size;
	pData=(char *)&TxBuffer1[0];
	
	for(i=0;i<len;i++)pData[i]=pbuffer[i];
///////////////////////////////
	if(0 != needEnd)
	{
		if(len <= (UART1_TX_BUFFER_SIZE-2))
		{
			pData[len++] = '\r';
			pData[len++] = '\n';
		}
	}
///////////////////////////////    
	DMA_Cmd (DMA1_Channel4,DISABLE);
	DMA1_Channel4->CMAR =  (u32)TxBuffer1;
	DMA1_Channel4->CNDTR = len;
	g_ucUart1Sending=1; 
	DMA_Cmd (DMA1_Channel4,ENABLE);
#endif
}

void USART1_SendWaitCompleted(void)
{
#if UART1_TX_USE_DMA==1
	while(g_ucUart1Sending!=0){
		os_dly_wait(1);
	}
#endif
}
/*************************************************************************************
 * 函数名：USART2_Send
 * 描述  ：串口1发送数据函数  通过DMA实现
 * 输入  ：要发送数据的首地址，发送数据的个数。发送数据的地址任意，并不用固定为Txd1Buffer
 * 输出  : 无
 * 举例  ：Usart3_Send("Hello word!",11); Usart3_Send(Txd3Buffer,11);
 **************************************************************************************/
void USART2_Send(char *pbuffer, unsigned short size)
{
#if UART2_TX_USE_DMA==1
	unsigned short i;
	if(size==0 || size>UART2_TX_BUFFER_SIZE)return;

	//等待上一次发送完成
	while(g_ucUart2Sending!=0){
		os_dly_wait(1);
	}
	for(i=0;i<size;i++){
		TxBuffer2[i]=pbuffer[i];
	}
	DMA_Cmd (DMA1_Channel7,DISABLE);
	DMA1_Channel7->CMAR =  (u32)TxBuffer2;
	DMA1_Channel7->CNDTR = size;
	g_ucUart2Sending=1;   
	DMA_Cmd (DMA1_Channel7,ENABLE);                                        //使能DMA,开始发送                                                              //数据发送中                                                                             //灯亮

#endif
}
void USART3_SendWaitCompleted(void) 
{
#if UART3_TX_USE_DMA==1
	while(g_ucUart3Sending!=0){
		os_dly_wait(1);
	}
#endif
}


/*********************************************************************************************
*UART1RxTxISRHandler
*串口1中断处理函数
**********************************************************************************************/
void UART1RxTxISRHandler(void)
{
	__IO unsigned char uart_data;
	__IO static unsigned char uart_last_data=0;
	char *p;
	unsigned char i;
	uint32_t temp = 0;
	//----接收中断--------
	if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)
	{
			uart_data = USART_ReceiveData(USART1);
		if(g_ucUARTSel==COM_SEL_MODEM){//Modem Trace
			USART_SendData(USART2, uart_data);
		}else if(g_ucUARTSel==COM_SEL_GPS){//GPS Trace
			USART_SendData(USART3, uart_data);	
		}else {
			
		if(g_usUart1RecvLen!=0){//上一包数据未处理完，不处理新来的数据，直接扔掉！
						rx1_ct=0;
						RxBuffer1[0]=0;
					return;
			}
		
			RxBuffer1[rx1_ct++]=uart_data;
			if(uart_last_data==0x0d &&uart_data==0x0a){
				if(RxBuffer1[0]=='>'||RxBuffer1[0]=='A'||RxBuffer1[0]=='G'){
						g_usUart1RecvLen=rx1_ct;
					RxBuffer1[rx1_ct]=0;
				}else{
					rx1_ct=0;
					RxBuffer1[0]=0;
				}
			}	
		}
		if(rx1_ct>=(UART1_RX_BUFFER_SIZE-1)){//数据超过缓冲区的数据，过滤不处理
			rx1_ct=0;
			g_usUart1RecvLen=0;
		}
	}

	uart_last_data=uart_data;	

	USART_ClearITPendingBit(USART1,  USART_IT_RXNE);  //清除中断标志
//	//---异常中断---
	if(USART_GetFlagStatus(USART1,USART_FLAG_ORE)==SET)
	{
		USART_ReceiveData(USART1); //
		USART_ClearFlag(USART1,USART_FLAG_ORE); // 
	}
}

/*******************************************************************************
Uart1Init
Use for Trace 
*******************************************************************************/
void Uart1Init()
{ 
	
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure; 

	RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE);
	/*
	*  USART1_TX -> PA9 , USART1_RX ->	PA10
	*/				
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;	         
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; 
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 
	GPIO_Init(GPIOA, &GPIO_InitStructure);		   

	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;	        
	GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING;// GPIO_Mode_IPU;//GPIO_Mode_IN_FLOATING;  
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; 
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	USART_InitStructure.USART_BaudRate =9600;// 115200;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
	USART_Init(USART1, &USART_InitStructure); 
	USART_Cmd(USART1, ENABLE);
	
	USART_ClearFlag(USART1,USART_FLAG_TC);
	USART_ITConfig(USART1, USART_IT_TXE,  DISABLE); //ENABLE DISABLE
	USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);  //ENABLE//DISABLE
}

void Uart1RxEnable(int en)
{
	static unsigned char sucEn=0;
	USART_InitTypeDef USART_InitStructure; 
	if(sucEn!=en)sucEn=en;
	else return;
	if(en){	
		USART_InitStructure.USART_BaudRate =9600;// 115200;
		USART_InitStructure.USART_WordLength = USART_WordLength_8b;
		USART_InitStructure.USART_StopBits = USART_StopBits_1;
		USART_InitStructure.USART_Parity = USART_Parity_No;
		USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
		USART_InitStructure.USART_Mode =  USART_Mode_Rx | USART_Mode_Tx;// 
		USART_Init(USART1, &USART_InitStructure); 
		USART_Cmd(USART1, ENABLE);
		USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  //ENABLE
	}else{
		USART_InitStructure.USART_BaudRate =9600;// 115200;
		USART_InitStructure.USART_WordLength = USART_WordLength_8b;
		USART_InitStructure.USART_StopBits = USART_StopBits_1;
		USART_InitStructure.USART_Parity = USART_Parity_No;
		USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
		USART_InitStructure.USART_Mode =  USART_Mode_Tx;// 
		USART_Init(USART1, &USART_InitStructure); 
		USART_Cmd(USART1, ENABLE);
		USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);  //ENABLE
	}
}

void Uart1RxEnable2(int en)
{
	USART_InitTypeDef USART_InitStructure; 

	if(en){
		USART_InitStructure.USART_BaudRate =115200;// 115200;
		USART_InitStructure.USART_WordLength = USART_WordLength_8b;
		USART_InitStructure.USART_StopBits = USART_StopBits_1;
		USART_InitStructure.USART_Parity = USART_Parity_No;
		USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
		USART_InitStructure.USART_Mode =  USART_Mode_Rx | USART_Mode_Tx;// 
		USART_Init(USART1, &USART_InitStructure); 
		USART_Cmd(USART1, ENABLE);
		USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);  //ENABLE	//USART_IT_IDLE USART_IT_RXNE	
	}else{
		USART_InitStructure.USART_BaudRate =115200;// 115200;
		USART_InitStructure.USART_WordLength = USART_WordLength_8b;
		USART_InitStructure.USART_StopBits = USART_StopBits_1;
		USART_InitStructure.USART_Parity = USART_Parity_No;
		USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
		USART_InitStructure.USART_Mode = USART_Mode_Tx;// 
		USART_Init(USART1, &USART_InitStructure); 
		USART_Cmd(USART1, ENABLE);
		USART_ITConfig(USART1, USART_IT_RXNE, DISABLE);	//USART_IT_IDLE USART_IT_RXNE
	}
}






/***************************************************************************
Uart2Init
Use for MainBoard
****************************************************************************/
void Uart2Init(void)
{

	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure; 

	/*使能串口2使用的GPIO时钟*/
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
	/*使能串口2时钟*/
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);  
          
	/*串口2 RX管脚配置*/
	/* Configure USART2 Rx as input floating */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);  

	/*串口2 TX管脚配置*/ 
	/* Configure USART2 Tx as alternate function push-pull */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
	GPIO_Init(GPIOA, &GPIO_InitStructure);  

	USART_InitStructure.USART_BaudRate = 115200;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
	USART_Init(USART2, &USART_InitStructure); 

  USART_ClearFlag(USART2,USART_FLAG_TC);
	USART_ITConfig(USART2, USART_IT_TXE,  DISABLE); //ENABLE DISABLE
	USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //ENABLE DISABLE
	USART_ITConfig(USART2, USART_IT_IDLE, DISABLE);//USART_IT_IDLE USART_IT_RXNE
	USART_ITConfig(USART2, USART_IT_PE, ENABLE);   
  USART_ITConfig(USART2, USART_IT_ERR, ENABLE);
	USART_Cmd(USART2, ENABLE);

	rx2_ct=0;
	g_usRx2Len=0;
	g_usRx2In=0;
	g_usRx2Out=0;
	g_ucUart2Sending=0;
	memset(RxBuffer2,0,sizeof(RxBuffer2));
}

void UART3RxTxISRHandler(void)                               
{   
	uint16_t i = 0;
	__IO unsigned char uart_data;
	__IO static unsigned char uart_last_data=0;
	if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET){
		
		uart_data = USART_ReceiveData(USART3);
		
		if(g_ucUARTSel==COM_SEL_GPS){
			USART_SendData(USART1, uart_data);	
		}else if(0==g_usUart3RecvLen){
			RxBuffer3[rx3_ct]= uart_data;
			if(RxBuffer3[0]!='$')rx3_ct=0;
			else rx3_ct++;
			if(rx3_ct>=(UART3_RX_BUFFER_SIZE-1))rx3_ct=0;
			
			if(uart_last_data==0x0d && uart_data==0x0a){ //收到回车换行符
				if((RxBuffer3[1]=='G' && RxBuffer3[3]=='R' && RxBuffer3[5]=='C')||(RxBuffer3[1]=='G' && RxBuffer3[4]=='G' && RxBuffer3[5]=='A')){//$GPRMC $GNGGA
					//Send message
				//	SlwTrace(DEBUG,"GPRMCisg_usUart2RecvLen=rx2_ct?Send message?!\r\n");
					RxBuffer3[rx3_ct-1]=0;
					g_usUart3RecvLen=rx3_ct;
				}else{
					rx3_ct=0;
				}
			}
				
		}else{
			rx3_ct=0;
		}		
		USART_ClearITPendingBit(USART3,  USART_IT_RXNE);  //Clean interrupt flag	
		uart_last_data=uart_data;
	} 
	
	if(USART_GetFlagStatus(USART3,USART_FLAG_ORE)==SET)
	{
		USART_ReceiveData(USART3);    //
		USART_ClearFlag(USART3,USART_FLAG_ORE); // 
	}
	
} 
/***************************************************************************
Uart3Init
****************************************************************************/
void Uart3Init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	USART_InitTypeDef USART_InitStructure; 

	/*使能串口3使用的GPIO时钟*/
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
	/*使能串口3时钟*/
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);  
          
	/*串口3 RX管脚配置*/
	/* Configure USART3 Rx as input floating */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);  

	/*串口3 TX管脚配置*/ 
	/* Configure USART2 Tx as alternate function push-pull */
//	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
//	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;//GPIO_Mode_AF_PP;
//	GPIO_Init(GPIOB, &GPIO_InitStructure);  

	USART_InitStructure.USART_BaudRate = 9600;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_Parity = USART_Parity_No;;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx;
	USART_Init(USART3, &USART_InitStructure); 

	
	USART_ClearFlag(USART3,USART_FLAG_TC);
	USART_ITConfig(USART3, USART_IT_TXE,  DISABLE); //ENABLE DISABLE
	USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //ENABLE DISABLE
	USART_ITConfig(USART3, USART_IT_IDLE, DISABLE);//USART_IT_IDLE USART_IT_RXNE
	USART_Cmd(USART3, ENABLE);
	
	rx3_ct=0;
	g_usUart3RecvLen=0;
	memset(RxBuffer3, 0, sizeof(RxBuffer3));
}

/***********************************************************************************
*
************************************************************************************/
void SlwTrace(TRACE_TYPE type,char *buf,char needEnd)
{
	int len;

#if UART1_TX_USE_DMA==0
	len=strlen(buf);
	//if(len>256)len=256;
	Uart1Send(buf,len);
#else
	len=strlen(buf);
	if(len>UART1_TX_BUFFER_SIZE)len=UART1_TX_BUFFER_SIZE;
	//USART1_Send(buf,len);
	USART1_SendNew(buf,len,needEnd);
#endif
	
}

/*******************************************************************************
ComSelect
调试口选择
#define COM_SEL_MCU 	0
#define COM_SEL_GPS 	1
#define COM_SEL_MODEM 	2
*******************************************************************************/
void ComSelect(unsigned char sel)
{
	switch(sel)
	{
		case COM_SEL_MCU:
			SlwTrace(INF,"COM<-->MCU!",1);
			os_dly_wait(10);
			g_ucUARTSel=sel;
			USART_ITConfig(USART1, USART_IT_RXNE, DISABLE); //ENABLE DISABLE
			USART_ITConfig(USART1, USART_IT_IDLE, ENABLE);	//USART_IT_IDLE USART_IT_RXNE
			USART_ITConfig(USART2, USART_IT_RXNE, DISABLE); //ENABLE DISABLE
			USART_ITConfig(USART2, USART_IT_IDLE, ENABLE);	//USART_IT_IDLE USART_IT_RXNE
			break;
		
		case COM_SEL_GPS:
			SlwTrace(INF,"COM<-->GPS!",1);
			os_dly_wait(10);
			g_ucUARTSel=sel;
			USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //ENABLE DISABLE
			USART_ITConfig(USART1, USART_IT_IDLE, DISABLE);	//USART_IT_IDLE USART_IT_RXNE
			USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //ENABLE DISABLE
			USART_ITConfig(USART3, USART_IT_IDLE, DISABLE);	//USART_IT_IDLE USART_IT_RXNE
			break;
		
		case COM_SEL_MODEM:
			SlwTrace(INF,"COM<-->Modem!",1);
			os_dly_wait(10);
			g_ucUARTSel=sel;
			USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //ENABLE DISABLE
			USART_ITConfig(USART1, USART_IT_IDLE, DISABLE);	//USART_IT_IDLE USART_IT_RXNE	
			USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //ENABLE DISABLE
			USART_ITConfig(USART2, USART_IT_IDLE, DISABLE);	//USART_IT_IDLE USART_IT_RXNE
			break;
		
	}
}
/**************************************************************************
* USART1_SendOK_IQ
* 串口1发送数据完毕后，会调用的中断函数，将发送标志置0
* 此函数需在stm32f10x_it.c 的 DMA1_Channel4_IRQHandler()中被调用
***************************************************************************/
void USART1_SendOK_IQ(void)
{
	//判断是否为DMA发送完成中断
	if(DMA_GetFlagStatus(DMA1_FLAG_TC4)==SET) 
	{  
        DMA_ClearITPendingBit(DMA1_IT_GL4);
        DMA_ClearFlag(DMA1_FLAG_TC4);
        DMA_Cmd (DMA1_Channel4,DISABLE);
        g_ucUart1Sending = 0; //数据发送完毕       											 
	}      
	//printf("USART1_SendOK_IQ\r\n");
}
/**************************************************************************
* USART2_SendOK_IQ
* 串口3发送数据完毕后，会调用的中断函数，将发送标志置0
* 此函数需在stm32f10x_it.c 的 DMA1_Channel2_IRQHandler()中被调用
***************************************************************************/
void USART2_SendOK_IQ(void)
{
	//判断是否为DMA发送完成中断
	if(DMA_GetFlagStatus(DMA1_FLAG_TC7)==SET) 
	{  
        DMA_ClearITPendingBit(DMA1_IT_GL7);
        DMA_ClearFlag(DMA1_FLAG_TC7);
        DMA_Cmd (DMA1_Channel7,DISABLE);
        g_ucUart2Sending = 0; //数据发送完毕       											 
	}      
	//printf("USART3_SendOK_IQ\r\n");
}


#ifdef __GNUC__
  /* With GCC/RAISONANCE, small printf (option LD Linker->Libraries->Small printf
     set to 'Yes') calls __io_putchar() */
  #define PUTCHAR_PROTOTYPE int __io_putchar(int ch)
#else
  #define PUTCHAR_PROTOTYPE int fputc(int ch, FILE *f)
#endif /* __GNUC__ */


/**
  * @brief  Retargets the C library printf function to the USART.
  * @param  None
  * @retval None
  */
PUTCHAR_PROTOTYPE
{
  /* Place your implementation of fputc here */
  /* e.g. write a character to the USART */
  USART_SendData(USART1, (uint8_t) ch);

  /* Loop until the end of transmission */
  while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
  {
	
	}

  return ch;
}