/******************************************************************************************* * 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 ********************************************************************************************/ #include "Serial.h" #include "stm32f10x_dma.h" #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 char g_ucUart1Received=0;//接受到一包数据标志位 unsigned char g_ucUart1Sending=0;//仍有数据待发送标志 unsigned short rx1_ct=0,rx1_len=0; unsigned short tx1_ct=0,tx1_len=0; //UART3 用于与MODEM通讯 unsigned char RxBuffer3[UART3_RX_BUFFER_SIZE]; unsigned char TxBuffer3[UART3_TX_BUFFER_SIZE]; unsigned char g_ucUart3Received=0;//接受到一包数据标志位 unsigned char g_ucUart3Sending=0;//仍有数据待发送标志 static unsigned short rx3_ct=0,rx3_ct_max=0,rx3_len=0; static unsigned short tx3_ct=0,tx3_len=0; /******************************************************************** *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); //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 = 3; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2; 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 //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, ENABLE); //使能通道 } /********************************************************************************************* *UART3RxTxISRHandler *串口3中断处理函数 **********************************************************************************************/ void UART3RxTxISRHandler(void) { /* __IO unsigned char uart_data; __IO unsigned short datalen; __IO int i; __IO int temp; static __IO unsigned char uart_last_data; __IO char *p; //----接收中断-------- if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET) { uart_data = USART_ReceiveData(USART3); // Read one byte from the receive data register //MCU 处理Modem RxBuffer3[rx3_ct++]= uart_data; if(rx3_ct>=UART3_RX_BUFFER_SIZE) rx3_ct=0; if(uart_last_data==0x0d && uart_data==0x0a){ //收到回车换行符 if(rx3_ct<2){ //独立的回车换行直接忽略 rx3_ct=0; }else{ //先判断是否+ZIPRECVU，如果是则需特殊处理 datalen=0; if(RxBuffer3[0]=='+' && RxBuffer3[7]=='V' && RxBuffer3[1]=='Z' && RxBuffer3[3]=='P' && RxBuffer3[5]=='E') {//+ZIPRECVU //获取ZIPRECV接收数据长度 +ZIPRECVU:0,1024,xxxx/r/n if(RxBuffer3[12]>0x2f && RxBuffer3[12]<0x3a){ if(RxBuffer3[13]>0x2f && RxBuffer3[13]<0x3a){ if(RxBuffer3[14]>0x2f && RxBuffer3[14]<0x3a){ if(RxBuffer3[15]>0x2f && RxBuffer3[15]<0x3a){ datalen=1000*(RxBuffer3[12]-0x30); datalen+=100*(RxBuffer3[13]-0x30); datalen+=10*(RxBuffer3[14]-0x30); datalen+=(RxBuffer3[15]-0x30); datalen+=19; }else{ datalen=100*(RxBuffer3[12]-0x30); datalen+=10*(RxBuffer3[13]-0x30); datalen+=(RxBuffer3[14]-0x30); datalen+=18; } }else{ datalen=10*(RxBuffer3[12]-0x30); datalen+=(RxBuffer3[13]-0x30); datalen+=17; } }else{ datalen= RxBuffer3[12]-0x30; datalen+=16; } } } //非+ZIPRECVU包，或大于+ZIPRECV包长的包，则认为完成一包数据接收 if(rx3_ct>=datalen && rx3_ct>0){ //以'+'开头的才处理 或 OK if((RxBuffer3[0]=='+') || (RxBuffer3[0]=='O' && RxBuffer3[1]=='K')){ //发消息 MsgQueuePost(&ModemMsgQueue,(char *)RxBuffer3,rx3_ct); } rx3_ct=0; } } } uart_last_data = uart_data; USART_ClearITPendingBit(USART3, USART_IT_RXNE); //清除中断标志 } if(USART_GetFlagStatus(USART3,USART_FLAG_ORE)==SET) { assert_param(IS_USART_CLEAR_FLAG(USART_FLAG_ORE)); USART_ReceiveData(USART3); // USART_ClearFlag(USART3,USART_FLAG_ORE); // } */ } /******************************************************************************** *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_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 } } */ /********************************************************************************************* *UART1RxTxISRHandler *串口1中断处理函数 **********************************************************************************************/ void UART1RxTxISRHandler(void) { __IO unsigned long temp; //接收空闲中断 if(USART_GetITStatus(USART1, USART_IT_IDLE) != RESET){ temp = USART1->SR;//先读SR,再读DR temp = USART1->DR;//方可清USART_IT_IDLE标志 temp = UART1_RX_BUFFER_SIZE - DMA1_Channel5->CNDTR; DMA_Cmd(DMA1_Channel5,DISABLE); //处理数据 //if(RxBuffer1[0]=='P' && RxBuffer1[1]=='C' && RxBuffer1[2]=='T' && RxBuffer1[3]=='A'){ if(sutMsg.Uart1Recv){//上一批没处理，不接受新数据 }else{ //数据拷贝 memcpy(IapRxBuf,RxBuffer1,temp); IapRxLen=temp; sutMsg.Uart1Recv=1; } //} //重设DMA传输数据长度 DMA1_Channel5->CNDTR = UART1_RX_BUFFER_SIZE; //打开DMA DMA_Cmd(DMA1_Channel5,ENABLE); } if(USART_GetFlagStatus(USART3,USART_FLAG_ORE)==SET) { assert_param(IS_USART_CLEAR_FLAG(USART_FLAG_ORE)); USART_ReceiveData(USART1); // USART_ClearFlag(USART1,USART_FLAG_ORE); // } } /******************************************************************************* Uart1Init Use for Trace *******************************************************************************/ void Uart1Init(void) { 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 */ 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 =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); /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); /* Enable the USART1 Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); USART_ClearFlag(USART1,USART_FLAG_TC); USART_ITConfig(USART1, USART_IT_TXE, DISABLE); //ENABLE DISABLE USART_ITConfig(USART1, USART_IT_RXNE, DISABLE); //ENABLE DISABLE USART_ITConfig(USART1, USART_IT_IDLE, ENABLE); //USART_IT_IDLE USART_IT_RXNE USART_DMACmd(USART1,USART_DMAReq_Rx,ENABLE); //使能USART1的接收DMA请求 USART_DMACmd(USART1,USART_DMAReq_Tx,DISABLE); //使能USART1的发送DMA请求 Uart1DMAInit(); } void UART2RxTxISRHandler(void) { } /*************************************************************************** Uart3Init ****************************************************************************/ void Uart3Init(void) { NVIC_InitTypeDef NVIC_InitStructure; 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_IN_FLOATING;//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*/ /* 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 = 115200;//115200;//57600;//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); /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0); /* Enable the USART3 Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); USART_ClearFlag(USART3,USART_FLAG_TC); USART_ITConfig(USART3, USART_IT_TXE, DISABLE); //ENABLE DISABLE USART_ITConfig(USART3, USART_IT_RXNE, ENABLE); //ENABLE DISABLE USART_ITConfig(USART3, USART_IT_IDLE, DISABLE);//USART_IT_IDLE USART_IT_RXNE USART_ITConfig(USART1, USART_IT_PE, ENABLE); USART_ITConfig(USART1, USART_IT_ERR, ENABLE); USART_Cmd(USART3, ENABLE); USART_DMACmd(USART3,USART_DMAReq_Tx,DISABLE); //使能USART1的DMA请求 USART_DMACmd(USART3,USART_DMAReq_Rx,DISABLE); //使能USART1的DMA请求 //Uart3DMAInit(); } /******************************************************************************** *Uart3Send *串口3启动发送 *********************************************************************************/ void Uart3Send(void) { if(tx3_len==0 || tx3_len>UART3_TX_BUFFER_SIZE)return; // //启动新一轮发送 // g_ucUart2Sending=tx2_len; // tx2_ct=0; // //发送 // //USART_ClearITPendingBit(USART2, USART_IT_TXE); //清除中断标志 // USART_ITConfig(USART2, USART_IT_TXE, ENABLE); for(tx3_ct=0;tx3_ct152){ printf("TraceBuffer Error!\r\n"); return; } DelayTick(10); printf("[IAP]"); printf(TraceBuffer); DelayTick(10); } */ /*********************************************************************************** * ************************************************************************************/ void IapTrace(char *buf) { char *p=buf; DelayTick(10); printf("[IAP]"); while(0!=*p){ USART_SendData(USART1, *p); while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET); p++; } DelayTick(10); } void SlwTrace(char *buf) { char *p=buf; while(0!=*p){ USART_SendData(USART1, *p); while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET); p++; } } #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; }