/******************************************************************************************* * 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=COM_SEL_MCU;//0--MCU 1--Modem 2--GPS unsigned short g_usUSART_WordLength = 0x0000;//用于串口初始化，无校验位时为0x0000,有校验位时为0x1000 unsigned char g_ucDebugLog=0;//0--不打印DEBUG信息 1--打印DEBUG信息 //UART1 对外接口 unsigned char RxBuffer1[UART1_RX_BUFFER_SIZE]; unsigned char TxBuffer1[UART1_TX_BUFFER_SIZE]; unsigned char ModbusBuf[UART1_RX_BUFFER_SIZE]; static unsigned short rx1_ct; static unsigned char rx1_ct_max=0; unsigned char g_ucUart1Sending; unsigned char g_usUart1RecvLen=0; //UART3 用于与MODEM通讯 unsigned char RxBuffer3[UART3_RX_BUFFER_SIZE]; unsigned char TxBuffer3[UART3_TX_BUFFER_SIZE]; static unsigned short susRx3In=0; static unsigned short susRx3Len=0; static unsigned short susRx3Out=0; //UART2 用于与GPS通讯 unsigned char RxBuffer2[UART2_RX_BUFFER_SIZE]; static unsigned short rx2_ct; unsigned short g_usRx2Len; /******************************************************************** *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 } /******************************************************************** *Uart3DMAInit *串口3 DMA设置 *串口3 发送必须用通道2，接收必须用通道3 *********************************************************************/ /* void Uart3DMAInit(void) { NVIC_InitTypeDef NVIC_InitStructure; DMA_InitTypeDef DMA_InitStructure; //启动DMA时钟 RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); //DMA 通道2用于UART3 TX DMA_DeInit(DMA1_Channel2); DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&USART3->DR);//外设地址 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)TxBuffer3;//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_Channel2,&DMA_InitStructure); //DMA中断设置 // NVIC_InitStructure.NVIC_IRQChannel = DMA1_Channel2_IRQn; // NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; // NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; // NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; // NVIC_Init(&NVIC_InitStructure); DMA_ITConfig(DMA1_Channel2,DMA_IT_TC,ENABLE);//中断设置 DMA_Cmd(DMA1_Channel2, DISABLE); //等到需要发送的时候再使能 //DMA 通道3用于UART3 RX DMA_DeInit(DMA1_Channel3); DMA_InitStructure.DMA_PeripheralBaseAddr = (u32)(&USART3->DR);//外设地址 DMA_InitStructure.DMA_MemoryBaseAddr = (uint32_t)RxBuffer3;//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_Channel3,&DMA_InitStructure); DMA_Cmd(DMA1_Channel3, DISABLE); //使能通道 } */ extern unsigned short atous(char *pMsg); static unsigned char uart_data_last=0; /* Use for Modem */ void UART3RxTxISRHandler(void) { __IO unsigned char uart_data; unsigned short len; static unsigned char GSAFlag=0; if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET) { uart_data = USART_ReceiveData(USART3); // Read one byte from the receive data register if(g_ucUARTSel==COM_SEL_MODEM){ USART_SendData(USART1,uart_data); }else{ if(susRx3Len=UART3_RX_BUFFER_SIZE)susRx3In=0; susRx3Len++; } isr_sem_send(&ModemUartSem); } USART_ClearITPendingBit(USART3, USART_IT_RXNE); } //--- if(USART_GetFlagStatus(USART3,USART_FLAG_ORE)==SET) { USART_ReceiveData(USART3); // USART_ClearFlag(USART3,USART_FLAG_ORE); // } } static unsigned short susTcpRecvDataLen=0;//如果是$MYNETREAD: 0,8的AT响应，则应该记录其长度并存放在susTcpRecvDataLen中，然后其后的与长度相匹配数据也一起打包成应用层的消息 /********************************************************************** Uart3RecvProcess 从UART3接收缓冲区RxBuffer3中提取消息，放入环形消息队列Uart3MsgQueue中 RxBuffer3也是环形缓冲区。 需要处理以下几种消息： （1）长度为1的'>' 消息。 （2）非+QIURC: "recv"开头，以\r\n结尾的消息 （3）以+QIURC: "recv"开头，以\r\n结尾的消息,这种消息需要处理中间接收数据中可能存在\r\n，避免分包需要一并处理 +QIURC: "recv",0,20 ************************************************************************/ void Uart3RecvProcess(void) { char data; unsigned short RxLen,out; char preData[10]; char lastData1,lastData2; unsigned short i,j; static const char RECVHEAD[]={'+','Q','I','U','R','C',':',' ','\"','r','e','c','v','\"',','};//+QIURC: "recv", RunMake(THIS_FILE_ID); //处理只有'>'的消息 if(susRx3Len==1){ USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 i=susRx3In; RxLen=susRx3Len; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 if(i>0)i--; else i=UART3_RX_BUFFER_SIZE-1; lastData1=RxBuffer3[i]; if(lastData1=='>'){ MsgQueuePostLoopBuf(&ModemMsgQueue,(char *)RxBuffer3,UART3_RX_BUFFER_SIZE,susRx3Out,RxLen); susRx3Out=(susRx3Out+RxLen)%UART3_RX_BUFFER_SIZE; USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3Len=susRx3Len-RxLen; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 return; } } //处理其他消息，其他消息必须以\r\n作为结束符，因此至少2字节长度， if(susRx3Len<2){ return; } //如果长度溢出，清空并重置缓冲区。 if(susRx3Len>(UART3_RX_BUFFER_SIZE-2)){ USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3In=0; susRx3Out=0; susRx3Len=0; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 SlwTrace(DEBUG,"[Rx3Buf Over]\r\n"); RunMake(THIS_FILE_ID); return; } //获取当前缓冲区中最后的两个字节并存放在lastData1和lastData2中，并记录下当前长度放在RxLen中 USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 i=susRx3In; RxLen=susRx3Len; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 if(i>0)i--; else i=UART3_RX_BUFFER_SIZE-1; lastData1=RxBuffer3[i]; if(i>0)i--; else i=UART3_RX_BUFFER_SIZE-1; lastData2=RxBuffer3[i]; if(lastData2!='\r' || lastData1!='\n')return; if(RxLen==2){//只有\r\n的消息抛弃掉 //更新环形缓冲区读指针和数据长度 susRx3Out=(susRx3Out+RxLen)%UART3_RX_BUFFER_SIZE; USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3Len=susRx3Len-RxLen; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 return; } //+QIURC: "recv",x,y\r\n if(susTcpRecvDataLen==0){ if(RxLen>19){//如果缓冲区里的数据大于19字节，则先需要判断是否为+QIURC: "recv",x,y\r\n 如果是则需要和后续的数据合并 //预读15个字节，然后判断是否等于+QIURC: "recv", out=susRx3Out; for(i=0;iUART3_RX_BUFFER_SIZE)out=0; if(data!=RECVHEAD[i])break; } if(i==sizeof(RECVHEAD)){//等于RECVHEAD 则需要和后续的数据进行合并 //因此继续读后面的数据，取RECVHEAD,x,y中的y 并转为整数存在susTcpRecvDataLen中 if(++out>UART3_RX_BUFFER_SIZE)out=0;//, if(++out>UART3_RX_BUFFER_SIZE)out=0;//y for(i=0;i<4;i++){//1234 preData[i]=RxBuffer3[out]; if(++out>UART3_RX_BUFFER_SIZE)out=0; } preData[i]=0; susTcpRecvDataLen=atoi(preData); //printf("L=%d\r\n",susTcpRecvDataLen); //在此要判断一下susTcpRecvDataLen的值，如果是0，则将此包立刻输出应用层消息，否则会进入死循环 if(susTcpRecvDataLen == 0){ MsgQueuePostLoopBuf(&ModemMsgQueue,(char *)RxBuffer3,UART3_RX_BUFFER_SIZE,susRx3Out,RxLen); //更新环形缓冲区读指针和数据长度 susRx3Out=(susRx3Out+RxLen)%UART3_RX_BUFFER_SIZE; USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3Len=susRx3Len-RxLen; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 } }else{//非RECVHEAD 开头的，则认为已是完整的消息,直接产生应用层消息。 MsgQueuePostLoopBuf(&ModemMsgQueue,(char *)RxBuffer3,UART3_RX_BUFFER_SIZE,susRx3Out,RxLen); //更新环形缓冲区读指针和数据长度 susRx3Out=(susRx3Out+RxLen)%UART3_RX_BUFFER_SIZE; USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3Len=susRx3Len-RxLen; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 } }else{//长度小于19字节，当然是非RECVHEAD消息了，那就认为已是完整的消息,直接产生应用层消息。 MsgQueuePostLoopBuf(&ModemMsgQueue,(char *)RxBuffer3,UART3_RX_BUFFER_SIZE,susRx3Out,RxLen); //更新环形缓冲区读指针和数据长度 susRx3Out=(susRx3Out+RxLen)%UART3_RX_BUFFER_SIZE; USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3Len=susRx3Len-RxLen; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 } }else{ //比如：+QIURC: "recv",0,20\r\n..... //则sTcpRecvDataLen=20, 总长度=19+2+20 //如果susTcpRecvDataLen是1位数，那么RxLen=susTcpRecvDataLen+20 //如果susTcpRecvDataLen是2位数，那么RxLen=susTcpRecvDataLen+21 //如果susTcpRecvDataLen是3位数，那么RxLen=susTcpRecvDataLen+22 //如果susTcpRecvDataLen是4位数，那么RxLen=susTcpRecvDataLen+23 if(susTcpRecvDataLen<10)i=susTcpRecvDataLen+20; else if(susTcpRecvDataLen<100)i=susTcpRecvDataLen+21; else if(susTcpRecvDataLen<1000)i=susTcpRecvDataLen+22; else i=susTcpRecvDataLen+23; if(RxLen>=i){//长度够了，完整的数据包，产生应用层消息 MsgQueuePostLoopBuf(&ModemMsgQueue,(char *)RxBuffer3,UART3_RX_BUFFER_SIZE,susRx3Out,RxLen); //更新环形缓冲区读指针和数据长度 susRx3Out=(susRx3Out+RxLen)%UART3_RX_BUFFER_SIZE; USART_ITConfig(USART3, USART_IT_RXNE, DISABLE); //关闭串口接收中断 susRx3Len=susRx3Len-RxLen; USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //打开串口接收中断 susTcpRecvDataLen=0; } } } /******************************************************************************** *Uart1Send *串口1启动发送 *********************************************************************************/ /* void Uart1Send(char *txbuf,int len) { int i; unsigned char data; unsigned char last_data=~UART_TRANSFORM; //Send Head USART_SendData(USART1, UART_HEAD); while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET); for(i=0;i(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;iCMAR = (u32)TxBuffer1; DMA1_Channel4->CNDTR = len; g_ucUart1Sending=1; DMA_Cmd (DMA1_Channel4,ENABLE); //使能DMA,开始发送 #else Uart1Send(pbuffer,size); #endif } void USART1_SendWaitCompleted(void) { #if UART1_TX_USE_DMA==1 while(g_ucUart1Sending!=0){ os_dly_wait(1); } #endif } //void USART2_SendWaitCompleted(void) //{ //#if UART2_TX_USE_DMA==1 // while(g_ucUart2Sending!=0){ // os_dly_wait(1); // } //#endif //} void USART3_SendWaitCompleted(void) { #if UART3_TX_USE_DMA==1 while(g_ucUart3Sending!=0){ os_dly_wait(1); } #endif } /************************************************************************************* * 函数名：USART2_Send * 描述 ：串口2发送数据函数 * 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 ：Usart2_Send("Hello word!",11); Usart1_Send(Txd1Buffer,11); **************************************************************************************/ //void USART2_Send(char *pbuffer, unsigned short size) //{ //#if UART2_TX_USE_DMA==1 // unsigned short i; // unsigned short len; // if(size==0)return; // //等待上一次发送完成 // while(g_ucUart2Sending!=0){} // // if(size>UART2_TX_BUFFER_SIZE)len=UART2_TX_BUFFER_SIZE; // else len=size; // for(i=0;iCMAR = (u32)DMATxBuffer2; // DMA1_Channel7->CNDTR = len; // g_ucUart2Sending=1; // DMA_Cmd (DMA1_Channel7,ENABLE); //使能DMA,开始发送 //数据发送中 //灯亮 // RunMake(THIS_FILE_ID); //#else // Uart2Send(pbuffer,size); //#endif //} /************************************************************************************* * 函数名：USART3_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 USART3_Send(char *pbuffer, unsigned short size) { #if UART3_TX_USE_DMA==1 unsigned short i; if(size==0 || size>UART3_TX_BUFFER_SIZE)return; //等待上一次发送完成 while(g_ucUart3Sending!=0){ os_dly_wait(1); } for(i=0;iCMAR = (u32)TxBuffer3; DMA1_Channel2->CNDTR = size; g_ucUart3Sending=1; DMA_Cmd (DMA1_Channel2,ENABLE); //使能DMA,开始发送 //数据发送中 //灯亮 #else Uart3Send(pbuffer,size); #endif } /********************************************************************************************* *UART1RxTxISRHandler *串口1中断处理函数 通讯协议 RxBuffer1接收缓冲区 sutMsg.Uart1Recv为1表明接受到一包数据，需要应用层处理数据后将其清零以便接受新的数据包 每包数据均以UART_HEAD开头，UART_END结尾。如解决数据包内容刚好有与UART_HEAD或UART_END相等的值，则需要转义 转义字符为UART_TRANSFORM，当收到UART_TRANSFORM开头时将根据紧挨其后的字符决定转义 如UART_HEAD=0x7a UART_END=0x7b UART_TRANSFORM=0x7c 如拟发送数据为： 01 02 7a 03 04 7b 05 06 7c 08 09 经过转换后的数据包为： 01 02 7c 02 03 04 7c 03 05 06 7c 01 08 09 加上包头包尾后： 7a 01 02 7c 02 03 04 7c 03 05 06 7c 01 08 09 7b ********************************************************************************************** void UART1RxTxISRHandler(void) { __IO unsigned char uart_data; __IO static unsigned char last_data; //----接收中断-------- if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) { uart_data = USART_ReceiveData(USART1); if(sutMsg.Uart1Recv){//上一批没处理，不接受新数据 USART_ClearITPendingBit(USART1, USART_IT_RXNE); //清除中断标志 rx1_ct=0; return; } if(uart_data==UART_HEAD){//包头 RxBuffer1[0]=UART_HEAD; rx1_ct=1; }else if(rx1_ct>=(UART1_RX_BUFFER_SIZE-1)){//超出接受缓冲区，丢掉此包数据，复位重新接收 rx1_ct=0; }else if(rx1_ct>0){ if(uart_data==UART_END){//包尾 RxBuffer1[rx1_ct++]=uart_data; rx1_len=rx1_ct; rx1_ct=0; sutMsg.Uart1Recv=1; }else if(uart_data==UART_TRANSFORM){//转义字符，忽略 }else{ if(last_data==UART_TRANSFORM){ if(0x01==uart_data)RxBuffer1[rx1_ct++]=UART_TRANSFORM; else if(0x02==uart_data)RxBuffer1[rx1_ct++]=UART_HEAD; else if(0x03==uart_data)RxBuffer1[rx1_ct++]=UART_END; }else{ RxBuffer1[rx1_ct++]=uart_data; } } } last_data=uart_data; USART_ClearITPendingBit(USART1, USART_IT_RXNE); //清除中断标志 } } */ unsigned char max_len=0; /********************************************************************************************* *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; static unsigned short len,cnt=0; //----接收中断-------- if(USART_GetITStatus(USART1, USART_IT_IDLE) != RESET) { len = USART1->SR;//先读SR,再读DR len = USART1->DR;//方可清USART_IT_IDLE标志 // len = UART1_RX_BUFFER_SIZE - DMA1_Channel5->CNDTR; // DMA_Cmd(DMA1_Channel5,DISABLE); //// if(g_usUart1RecvLen==0){ //// memcpy(ModbusBuf,RxBuffer1,len); //// g_usUart1RecvLen=len; //// } // DMA1_Channel5->CNDTR = UART1_RX_BUFFER_SIZE; // DMA_Cmd(DMA1_Channel5,ENABLE); } if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET) { uart_data = USART_ReceiveData(USART1); USART_ClearITPendingBit(USART1, USART_IT_RXNE); //清除中断标志 if(g_ucUARTSel==COM_SEL_MODEM){ 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！ cnt=0; return; } RxBuffer1[cnt++]=uart_data; #if 1 if(RxBuffer1[0] == 'R'){//检测RT+TM指令 if((cnt >= 2 && RxBuffer1[1] != 'T') || (cnt >= 3 && RxBuffer1[2] != '+')){ cnt=0; }else if(uart_last_data=='\r' && uart_data=='\n'){ g_usUart1RecvLen=cnt; cnt=0; } }else if(RxBuffer1[0] == PRO_HEADER){ if(cnt >= 3){ len=RxBuffer1[2]+3;//总接收长度 if(cnt>=len){//收够一包长度了 g_usUart1RecvLen=cnt; cnt=0; } } }else{//命令不认可 cnt=0; RxBuffer1[0]=0; } #else if(rx1_ct>2){ if( RxBuffer1[0]==0xAA && RxBuffer1[1]==0xBB){ if(rx1_ct==3)max_len=uart_data; else if(rx1_ct>max_len){ rx1_ct=0; max_len=0; RxBuffer1[0]=0; return; } if(uart_last_data==0xDD && uart_data==0x55){ g_usUart1RecvLen=rx1_ct; RxBuffer1[rx1_ct]=0;//末尾补0,方便应用层调试直接打印消息内容。 rx1_ct=0; } }else if((RxBuffer1[0]=='R'|| RxBuffer1[0]=='A') && RxBuffer1[1]=='T'){ if(uart_last_data=='\r' && uart_data=='\n'){ g_usUart1RecvLen=rx1_ct; RxBuffer1[rx1_ct]=0;//末尾补0,方便应用层调试直接打印消息内容。 rx1_ct=0; max_len=0; } }else{ rx1_ct=0; max_len=0; RxBuffer1[0]=0; } }else if(rx1_ct==1 && uart_data!=0xAA && uart_data!='R' && uart_data!='A'){ rx1_ct=0; max_len=0; RxBuffer1[0]=0; }else if(rx1_ct==2 && uart_data!=0xBB && uart_data!='T'){ rx1_ct=0; max_len=0; RxBuffer1[0]=0; } #endif 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; max_len=0; g_usUart1RecvLen=0; } uart_last_data=uart_data; } } //---异常中断--- if(USART_GetFlagStatus(USART1,USART_FLAG_ORE)==SET) { USART_ReceiveData(USART1); // USART_ClearFlag(USART1,USART_FLAG_ORE); // } } /******************************************************************************* Uart1Init 对外接口 mode=0 正常模式 采用Idel中断 波特率 9600 mode=1 GPS透传模式 采用RXEN中断 波特率 9600 mode=2 Modem透传模式 采用RXEN中断 波特率 115200 *******************************************************************************/ void Uart1Init(int mode) { NVIC_InitTypeDef NVIC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1,ENABLE); /* * USART1_TX -> PA9 , USART1_RX -> PA10 , RS485_DIR -> PA8 */ 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_8; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_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_IPU;// GPIO_Mode_IPU;//GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); if(mode<2){ USART_InitStructure.USART_BaudRate =115200;//9600; }else{ 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(USART1, &USART_InitStructure); USART_Cmd(USART1, ENABLE); USART_ClearFlag(USART1,USART_FLAG_TC); USART_ITConfig(USART1, USART_IT_TXE, DISABLE); //ENABLE DISABLE if(mode==0){ USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //ENABLE DISABLE USART_ITConfig(USART1, USART_IT_IDLE, DISABLE); //USART_IT_IDLE USART_IT_RXNE //USART_DMACmd(USART1,USART_DMAReq_Rx,ENABLE); //使能USART1的接收DMA请求ENABLE //USART_DMACmd(USART1,USART_DMAReq_Tx,DISABLE); //使能USART1的发送DMA请求 Uart1DMAInit(); }else{ USART_ITConfig(USART1, USART_IT_RXNE, ENABLE); //ENABLE DISABLE USART_ITConfig(USART1, USART_IT_IDLE, DISABLE); //USART_IT_IDLE USART_IT_RXNE USART_DMACmd(USART1,USART_DMAReq_Rx,DISABLE); //使能USART1的接收DMA请求ENABLE USART_DMACmd(USART1,USART_DMAReq_Tx,DISABLE); //使能USART1的发送DMA请求 DMA_Cmd(DMA1_Channel5, DISABLE); //使能通道 } rx1_ct=0; g_usUart1RecvLen=0; g_ucUart1Sending=0; RS485_DIR_LOW; } /******************************************************************** *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); // //DMA 通道7用于UART2 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 = UART2_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_Channel7,&DMA_InitStructure); // DMA_ITConfig(DMA1_Channel7,DMA_IT_TC,ENABLE);//中断设置 // DMA_Cmd(DMA1_Channel7, DISABLE); //等到需要发送的时候再使能 ///* // //DMA 通道6用于UART2 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 = UART2_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_Channel6,&DMA_InitStructure); // // DMA_ITConfig(DMA1_Channel6,DMA_IT_TC,DISABLE);//中断设置 RX DMA不需要中断 // DMA_Cmd(DMA1_Channel6, ENABLE); //*/ //} /*************************************************************************** Uart2Init Use for GPS ****************************************************************************/ void Uart2Init(void) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; memset(RxBuffer2,0,sizeof(RxBuffer2)); /*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_Mode_IN_FLOATING; 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 = 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_Mode_Tx; USART_Init(USART2, &USART_InitStructure); USART_ClearFlag(USART2,USART_FLAG_TC); USART_ITConfig(USART2, USART_IT_RXNE, ENABLE); //ENABLE DISABLE USART_ITConfig(USART2, USART_IT_IDLE, DISABLE); //USART_IT_IDLE USART_IT_RXNE USART_DMACmd(USART2,USART_DMAReq_Tx,DISABLE); USART_DMACmd(USART2,USART_DMAReq_Rx,DISABLE); USART_Cmd(USART2, ENABLE); g_usRx2Len=0; rx2_ct=0; //USART_DMACmd(USART2,USART_DMAReq_Rx,ENABLE); //使能USART1的接收DMA请求 //Uart2DMAInit(); } /* Use for GPS */ void UART2RxTxISRHandler(void) { __IO unsigned char uart_data; __IO static unsigned char last_uart_data=0; if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET){ uart_data = USART_ReceiveData(USART2); if(g_ucUARTSel==COM_SEL_GPS){ USART_ClearITPendingBit(USART2,USART_IT_RXNE); USART_SendData(USART1,uart_data); return; } if(g_usRx2Len==0){ RxBuffer2[rx2_ct]=uart_data; if(rx2_ct<(UART2_RX_BUFFER_SIZE-1))rx2_ct++; //$GNRMC, //$BDGSV, //$GNRMC,062056.000,A,2237.2459,N,11402.1144,E,0.00,147.89,110319,,,A*77 if(last_uart_data=='\r' && uart_data=='\n'){ if(RxBuffer2[0]=='$' && RxBuffer2[3]=='R' && RxBuffer2[4]=='M' && RxBuffer2[5]=='C'){ g_usRx2Len=rx2_ct; sutGpsInfo.isGpsWork=1; sutGpsInfo.GpsCheckWorkCt=0; sutGpsInfo.BDCheckWorkCt=0; RxBuffer2[rx2_ct]=0; } rx2_ct=0; } }else{ rx2_ct=0; } last_uart_data=uart_data; USART_ClearITPendingBit(USART2, USART_IT_RXNE); } if(USART_GetFlagStatus(USART2,USART_FLAG_ORE)==SET) { USART_ReceiveData(USART2); // USART_ClearFlag(USART2,USART_FLAG_ORE); // } } /*************************************************************************** Uart3Init ****************************************************************************/ void Uart3Init(void) { NVIC_InitTypeDef NVIC_InitStructure; GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; susRx3In=0; susRx3Len=0; susRx3Out=0; //初始化接收消息队列 MsgQueueInit(&ModemMsgQueue,ModemMsgQueueDataBuffer,MODEM_MSG_DATA_BUF_LEN); //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 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;//GPIO_Mode_IPU;//GPIO_Mode_IN_FLOATING; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); //串口3 TX管脚配置 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 = 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(USART3, &USART_InitStructure); USART_ClearFlag(USART3,USART_FLAG_TC); USART_ITConfig(USART3, USART_IT_TXE, DISABLE); USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); USART_ITConfig(USART3, USART_IT_IDLE, DISABLE); USART_Cmd(USART3, ENABLE); } /* void IapTrace(char* format, ...) { static char TraceBuffer[512]; va_list argptr; int cnt; va_start(argptr, format); cnt = vsprintf(TraceBuffer, format, argptr); va_end(argptr); if(cnt>152){ printf("TraceBuffer Error!\r\n"); return; } DelayTick(10); printf("[IAP]"); printf(TraceBuffer); DelayTick(10); } */ /*********************************************************************************** * ************************************************************************************/ void SlwTrace(TRACE_TYPE type,char *buf) { int len; #ifndef SLW_DEBUG if(type==DEBUG)return; #endif if(sutDeviceConfig.DebugPrintEn == 0) if(type==DEBUG)return; if(g_ucUARTSel!=COM_SEL_MCU)return; RS485_DIR_HIGH; #if UART1_TX_USE_DMA==0 len=strlen(buf); if(len>256)len=256; Uart1Send(buf,len); #else len=strlen(buf); if(len>512)len=512; if(len>UART1_TX_BUFFER_SIZE)len=UART1_TX_BUFFER_SIZE; USART1_Send(buf,len); #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_GPS: SlwTrace(INF,"Debug COM selcet to GPS!\r\n"); g_ucUARTSel=sel; os_tsk_delete(idModemTask); Uart1Init(1); RS485_DIR_HIGH; break; case COM_SEL_MODEM: SlwTrace(INF,"Debug COM selcet to Modem!\r\n"); g_ucUARTSel=sel; os_tsk_delete(idModemTask); Uart1Init(2); 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"); } /************************************************************************** * 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_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 // } //} /************************************************************************** * USART3_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 USART3_SendOK_IQ(void) //{ // //判断是否为DMA发送完成中断 // if(DMA_GetFlagStatus(DMA1_FLAG_TC2)==SET) // { // DMA_ClearITPendingBit(DMA1_IT_GL2); // DMA_ClearFlag(DMA1_FLAG_TC2); // DMA_Cmd (DMA1_Channel2,DISABLE); // g_ucUart3Sending = 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 { RS485_DIR_HIGH; /* 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) {} RS485_DIR_LOW; return ch; }