/*-------------------------------------------------------------------------------------- * @file USARTSetup.c * @author ZhangJing * @version base on stm32f0x * @date 2015.09.11 * @brief 串口驱动 ---------------------------------------------------------------------------------------*/ #include "stm32f10x_gpio.h" #include "TypeDefine.h" #include "USARTSetup.h" #include "stm32f10x_dma.h" uint8_t usart1XmitBuffer[USART1_XMIT_LEN]; //USART1发送缓冲 uint8_t usart1RecvBuffer[USART1_RECV_LEN]; //USART1接收缓冲 uint8_t usart1RecvCnt = 0; //USART1接收计数 uint8_t usart2XmitBuffer[USART2_XMIT_LEN]; //USART2发送缓冲 uint8_t usart2RecvBuffer[USART2_RECV_LEN]; //USART2接收缓冲 uint8_t usart2RecvCnt = 0; //USART2接收计数 uint8_t usart3XmitBuffer[USART3_XMIT_LEN]; //USART3发送缓冲 uint8_t usart3RecvBuffer[USART3_RECV_LEN]; //USART3接收缓冲 uint8_t usart3RecvCnt = 0; //USART3接收计数 /******************************************************************************* * Function: USART2_DMAinit() * Object: 串口1初始化函数 * 输入: 无 * 输出: 无 * 备注: 与PC通信 ********************************************************************************/ void USART2_DMAinit(void) { /*DMA_InitTypeDef DMA_InitStructure; RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); // DMA channel6configuration DMA_DeInit(DMA1_Channel6); DMA_InitStructure.DMA_PeripheralBaseAddr =(u32)(&USART2->DR); //外设地址 DMA_InitStructure.DMA_MemoryBaseAddr =(u32)usart2RecvBuffer; DMA_InitStructure.DMA_DIR =DMA_DIR_PeripheralSRC; //外设作为目的地址 //DMA_DIR_PeripheralSRC; //外设作为DMA的源端 DMA_InitStructure.DMA_BufferSize =50; //BufferSize; //传输大小 DMA_InitStructure.DMA_PeripheralInc =DMA_PeripheralInc_Disable; //外设递增模式禁止 DMA_PeripheralInc_Enable; //外设地址增加 DMA_InitStructure.DMA_MemoryInc =DMA_MemoryInc_Enable; //内存地址自增 DMA_InitStructure.DMA_PeripheralDataSize =DMA_PeripheralDataSize_Byte; //传输方式：字节 DMA_PeripheralDataSize_Word; //字（32位） DMA_InitStructure.DMA_MemoryDataSize =DMA_PeripheralDataSize_Byte; //内存存储方式：字节 DMA_MemoryDataSize_Word; DMA_InitStructure.DMA_Mode =DMA_Mode_Normal; //DMA_Mode_Normal 正常模式，只传送一次; DMA_Mode_Circular:循环模式，不停的传送; DMA_InitStructure.DMA_Priority =DMA_Priority_High; DMA_InitStructure.DMA_M2M =DMA_M2M_Disable; //DMA_M2M_Enable; DMA_Init(DMA1_Channel6,&DMA_InitStructure); // Enable DMA Channel4Transfer Complete interrupt // DMA_ITConfig(DMA1_Channel6,DMA_IT_TC, ENABLE); //采用DMA方式发送 // USART_DMACmd(USART2,USART_DMAReq_Rx,ENABLE); // DMA_ITConfig(DMA1_Channel6,DMA_IT_TC, ENABLE); // DMA_Cmd(DMA1_Channel6,ENABLE); //启动通道6*/ } /******************************************************************************** * Function: USART1Init * Object: 串口1初始化函数 * 输入: 无 * 输出: 无 * 备注: 与PC通信 *********************************************************************************/ void USART1_Init(uint32_t BaudRate) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; //USART1配置 RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_Init(GPIOA, &GPIO_InitStructure); GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOA, &GPIO_InitStructure); RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1,ENABLE);//复位串口1 RCC_APB2PeriphResetCmd(RCC_APB2Periph_USART1,DISABLE);//停止复位 USART_InitStructure.USART_BaudRate = BaudRate;//一般设置为9600; USART_InitStructure.USART_WordLength = USART_WordLength_8b;//8位数据长度 USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位 USART_InitStructure.USART_Parity = USART_Parity_No;///奇偶校验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//无硬件数据流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//收发模式 USART_Init(USART1, &USART_InitStructure); //初始化串口1 NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; //使能串口1中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; //先占优先级2级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //从优先级2级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道 NVIC_Init(&NVIC_InitStructure); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);//开启中断 USART_Cmd(USART1, ENABLE); //使能串口 } /******************************************************************************** * Function: USART2Init * Object: 串口2初始化函数 * 输入: 无 * 输出: 无 * 备注: 与Zigbee通信 *********************************************************************************/ void USART2_Init(uint32_t BaudRate) { /*GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; //USART2配置 RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); USART2_DMAinit();//调用USART2 DMA配置函数 //USART2管脚配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); // TXIO GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOA, &GPIO_InitStructure); // RXIO RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2,ENABLE);//复位串口2 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2,DISABLE);//停止复位 USART_InitStructure.USART_BaudRate = BaudRate;//设置串口波特率 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//设置数据位 USART_InitStructure.USART_StopBits = USART_StopBits_1;//设置停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//设置效验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//设置流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//设置工作模式 USART_Init(USART2, &USART_InitStructure); //配置入结构体 //中断设置 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; //使能串口2中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占优先级2级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级2级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道 NVIC_Init(&NVIC_InitStructure); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 //USART_ITConfig(USART2, (USART_IT_RXNE | USART_IT_IDLE), ENABLE);//开启中断 //中断配置 USART_ITConfig(USART2,USART_IT_TC,DISABLE); USART_ITConfig(USART2,USART_IT_RXNE,DISABLE); USART_ITConfig(USART2,USART_IT_IDLE,ENABLE); //采用DMA方式发送 USART_DMACmd(USART2,USART_DMAReq_Rx,ENABLE); //DMA_Cmd(DMA1_Channel6,ENABLE); //启动通道6 DMA_Cmd(DMA1_Channel6,DISABLE); //失能DMA功能 USART_Cmd(USART2, ENABLE); //使能串口 */ GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; //USART2配置 /* Enable USART clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE); RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); //USART2管脚配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOA, &GPIO_InitStructure); /* TXIO */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU; GPIO_Init(GPIOA, &GPIO_InitStructure); /* RXIO */ RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2,ENABLE);//复位串口2 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART2,DISABLE);//停止复位 USART_InitStructure.USART_BaudRate = BaudRate;//设置串口波特率 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//设置数据位 USART_InitStructure.USART_StopBits = USART_StopBits_1;//设置停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//设置效验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//设置流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//设置工作模式 USART_Init(USART2, &USART_InitStructure); //配置入结构体 //中断设置 NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; //使能串口2中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占优先级2级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //从优先级2级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道 NVIC_Init(&NVIC_InitStructure); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 USART_ITConfig(USART2, USART_IT_RXNE, ENABLE);//开启中断 USART_Cmd(USART2, ENABLE); //使能串口 } /******************************************************************************** * Function: USART3Init * Object: 串口3初始化函数 * 输入: 无 * 输出: 无 * 备注: 与从机通信 *********************************************************************************/ void USART3_Init(uint32_t BaudRate) { GPIO_InitTypeDef GPIO_InitStructure; USART_InitTypeDef USART_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; //USART3配置 RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE); RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE); //USART3管脚配置 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz; GPIO_Init(GPIOB, &GPIO_InitStructure); /* TXIO */ GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; GPIO_Init(GPIOB, &GPIO_InitStructure); /* RXIO */ RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3,ENABLE);//复位串口3 RCC_APB1PeriphResetCmd(RCC_APB1Periph_USART3,DISABLE);//停止复位 USART_InitStructure.USART_BaudRate = BaudRate;//设置串口波特率 USART_InitStructure.USART_WordLength = USART_WordLength_8b;//设置数据位 USART_InitStructure.USART_StopBits = USART_StopBits_1;//设置停止位 USART_InitStructure.USART_Parity = USART_Parity_No;//设置效验位 USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//设置流控制 USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;//设置工作模式 USART_Init(USART3, &USART_InitStructure); //配置入结构体 // // //中断设置 NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; //使能串口3中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; //先占优先级2级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //从优先级2级 NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能外部中断通道 NVIC_Init(&NVIC_InitStructure); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);//开启中断 USART_Cmd(USART3, ENABLE); } /******************************************************************************** * Function: USART1Send * Object: USART1发送函数 * 输入: uint8_t *xmitDataBuf 待发送数据缓存区 * uint32_t xmitLen 发送数据长度 * 输出: 无 * 备注: 1、根据xmitLen设定长度发送 xmitDataBuf中的数据 *********************************************************************************/ void USART1Send( uint8_t *xmitDataBuf, uint32_t xmitLen ) { uint8_t i; for( i = 0; i < xmitLen ; i++ ) { while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET); //发送完成 USART_SendData(USART1,*(xmitDataBuf++)); } while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET); } /******************************************************************************** * Function: USART2Send * Object: USART2发送函数 * 输入: uint8_t *xmitDataBuf 待发送数据缓存区 * uint32_t xmitLen 发送数据长度 * 输出: 无 * 备注: 1、根据xmitLen设定长度发送 xmitDataBuf中的数据 *********************************************************************************/ void USART2Send( uint8_t *xmitDataBuf, uint32_t xmitLen ) { uint8_t i; for( i = 0; i < xmitLen ; i++ ) { while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET); //发送完成 USART_SendData(USART2,*(xmitDataBuf++)); } while(USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET); } /******************************************************************************** * Function: USART3Send * Object: USART3发送函数 * 输入: uint8_t *xmitDataBuf 待发送数据缓存区 * uint32_t xmitLen 发送数据长度 * 输出: 无 * 备注: 1、根据xmitLen设定长度发送 xmitDataBuf中的数据 *********************************************************************************/ void USART3Send( uint8_t *xmitDataBuf, uint32_t xmitLen ) { uint8_t i; for( i = 0; i < xmitLen ; i++ ) { while(USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET); //发送完成 USART_SendData(USART3,*(xmitDataBuf++)); } while(USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET); }