STM32串口典型配置.doc

usart.h : 头文件/*-*/#ifndef _USART_H#define_USART_H/* Include -*/#include stm32f10x.h#include #include /#include /* Define & Typedef -*/* Macro Switch -*/*注：以下宏供移植时选择和修改 */#define USE_RS4852/使用RS485#define USE_USART1/使用串口1#define USE_USART2/使用串口2#define USE_USART3/使用串口3/#define USE_UART4/使用串口4/#define USE_UART5/使用串口5#define MAX_LEN 256/打印函数字符串输入最大字节数#define PUTX fputc/fputc重定向函数#ifdef USE_RS485#define RS485 0#define RS232 1#define RS24_CONFIG RS24_Configration/RS485-232选择控制端口配置函数#define RSCHOOSEFLAG SeM.Bit.RSChooseFlag/RS485-232选择标志#define RS485_T GPIO_SetBits(GPIOA,GPIO_Pin_1)/RS485进入发送状态#define RS485_R GPIO_ResetBits(GPIOA,GPIO_Pin_1)/RS485进入接收状态#endif/* Function Declaration -*/#ifdef USE_USART1void USART1_Configration(void); /串口1端口配置 void USART1_NVIC_Configuration(void);/串口1中断配置void USART1_Config(void); /串口1初始化int USART1_printf(char* str,.);/串口1打印函数#endif#ifdef USE_USART2void USART2_Configration(void); /串口2端口配置 void USART2_NVIC_Configuration(void);/串口2中断配置void USART2_Config(void); /串口2初始化int USART2_printf(char* str,.);/串口2打印函数#endif#ifdef USE_USART3void USART3_Configration(void); /串口3端口配置 void USART3_NVIC_Configuration(void);/串口3中断配置void USART3_Config(void); /串口3初始化int USART3_printf(char* str,.);/串口3打印函数#endif#ifdef USE_UART4void UART4_Configration(void); /串口4端口配置 void UART4_NVIC_Configuration(void);/串口4中断配置void UART4_Config(void); /串口4初始化int UART4_printf(char* str,.);/串口4打印函数#endif#ifdef USE_UART5void UART5_Configration(void); /串口5端口配置 void UART5_NVIC_Configuration(void);/串口5中断配置void UART5_Config(void); /串口5初始化int UART5_printf(char* str,.);/串口5打印函数#endif#ifdef USE_RS485void RS24_Configration(u8 flag);/RS232-485选择控制端口配置#endifvoid USART_Config(void); /串口初始化int fputc(int ch, FILE *f);/文件流字符打印函数（重定向到串口3）#endif /* _USART_H */*-*/usart.c : C文件/*-*/* (C) COPYRIGHT 2014xxxxxx * * 文件名 ：usart.c * 描述 ：将printf函数重定向到USART3。这样就可以用printf函数将单片机的数据 * 打印到PC上的超级终端或串口调试助手。 * 实验平台：xxxxxxx * 硬件连接：- * | PA9 - USART1(Tx) PA2 - USART2(Tx) PB10 - USART3(Tx) | * | PA10 - USART1(Rx) PA3 - USART2(Rx)PB11 - USART3(Rx) | *|PC10 - UART4(Tx)PC11 - UART5(Tx)PA0 - RS232-485 choose | *|PC11 - UART4(Rx)PD2 - UART5(Rx)PA1 - RS485 Tx-Rx choose | * - * 库版本 ：ST3.5.0 野火相关源码 * * 作者 ：xxxxxx * 时间 ：2014.6.24*/#include usart.h#include value.h/* USART1 -*/#ifdef USE_USART1/* * 函数名：USART1_Config * 描述 ：USART1 GPIO 配置,工作模式配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART1_Configration(void)GPIO_InitTypeDef GPIO_InitStructure;USART_InitTypeDef USART_InitStructure;/* config USART1 clock */RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA, ENABLE);/* USART1 GPIO config */* Configure USART1 Tx (PA.09) as alternate function push-pull */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); /* Configure USART1 Rx (PA.10) as input floating */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOA, &GPIO_InitStructure);/* USART1 mode config */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_ITConfig(USART1, USART_IT_RXNE, ENABLE);USART_Cmd(USART1, ENABLE);/* * 函数名：USART1_NVIC_Configuration * 描述 ：USART1中断优先级配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART1_NVIC_Configuration(void)NVIC_InitTypeDef NVIC_InitStructure; /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);/* Enable the USARTy Interrupt */NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure);/* * 函数名：USART1_Config * 描述 ：USART1初始化 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART1_Config(void)USART1_Configration();USART1_NVIC_Configuration();/* * 函数名：USART1_printf * 描述 ：USART1打印函数 * 输入 ：格式化字符串指针*str，参量表 * 输出 : 打印字符串的长度，如果长度为-1,则表示打印失败 * 调用 ：外部调用 */int USART1_printf(char* str,.)long ret = 0;char tempMAX_LEN = 0;char *p = NULL;va_list list;p = temp;va_start(list,str); ret = vsprintf(temp,str,list); if(ret = MAX_LEN)return -1;#ifdef USE_RS485#if USE_RS485 = 1RS485_T;#endif#endifwhile(*p+ != )USART_SendData(USART1, (u8)*p);while (!(USART1-SR & USART_FLAG_TXE);#ifdef USE_RS485#if USE_RS485 = 1RS485_R;#endif#endifreturn ret;#endif/*-*/* USART2 -*/#ifdef USE_USART2/* * 函数名：USART2_Config * 描述 ：USART2 GPIO 配置,工作模式配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART2_Configration(void)GPIO_InitTypeDef GPIO_InitStructure;USART_InitTypeDef USART_InitStructure;/* config USART2 clock */RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART2 | RCC_APB2Periph_GPIOA, ENABLE);/* USART2 GPIO config */* Configure USART2 Tx (PA.09) as alternate function push-pull */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); /* Configure USART2 Rx (PA.10) as input floating */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOA, &GPIO_InitStructure);/* USART2 mode config */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_ITConfig(USART2, USART_IT_RXNE, ENABLE);USART_Cmd(USART2, ENABLE);/* * 函数名：USART2_NVIC_Configuration * 描述 ：USART2中断优先级配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART2_NVIC_Configuration(void)NVIC_InitTypeDef NVIC_InitStructure; /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);/* Enable the USARTy Interrupt */NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure);/* * 函数名：USART2_Config * 描述 ：USART2初始化 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART2_Config(void)USART2_Configration();USART2_NVIC_Configuration();/* * 函数名：USART2_printf * 描述 ：USART2打印函数 * 输入 ：格式化字符串指针*str，参量表 * 输出 : 打印字符串的长度，如果长度为-1,则表示打印失败 * 调用 ：外部调用 */int USART2_printf(char* str,.)long ret = 0;char tempMAX_LEN = 0;char *p = NULL;va_list list;p = temp;va_start(list,str); ret = vsprintf(temp,str,list); if(ret = MAX_LEN)return -1;#ifdef USE_RS485#if USE_RS485 = 2RS485_T;#endif#endifwhile(*p+ != )USART_SendData(USART2, (u8)*p);while (!(USART2-SR & USART_FLAG_TXE);#ifdef USE_RS485#if USE_RS485 = 2RS485_R;#endif#endifreturn ret;#endif/*-*/* USART3 -*/#ifdef USE_USART3/* * 函数名：USART3_Config * 描述 ：USART3 GPIO 配置,工作模式配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART3_Configration(void)GPIO_InitTypeDef GPIO_InitStructure;USART_InitTypeDef USART_InitStructure;/* config USART3 clock */RCC_APB2PeriphClockCmd(RCC_APB1Periph_USART3 | RCC_APB2Periph_GPIOB, ENABLE);/* USART3 GPIO config */* Configure USART3 Tx (PA.09) as alternate function push-pull */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); /* Configure USART3 Rx (PA.10) as input floating */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOB, &GPIO_InitStructure);/* USART3 mode config */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(USART3, &USART_InitStructure);USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);USART_Cmd(USART3, ENABLE);/* * 函数名：USART3_NVIC_Configuration * 描述 ：USART3中断优先级配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART3_NVIC_Configuration(void)NVIC_InitTypeDef NVIC_InitStructure; /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);/* Enable the USARTy Interrupt */NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure);/* * 函数名：USART3_Config * 描述 ：USART3初始化 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void USART3_Config(void)USART3_Configration();USART3_NVIC_Configuration();/* * 函数名：USART3_printf * 描述 ：USART3打印函数 * 输入 ：格式化字符串指针*str，参量表 * 输出 : 打印字符串的长度，如果长度为-1,则表示打印失败 * 调用 ：外部调用 */int USART3_printf(char* str,.)long ret = 0;char tempMAX_LEN = 0;char *p = NULL;va_list list;p = temp;va_start(list,str); ret = vsprintf(temp,str,list); if(ret = MAX_LEN)return -1;#ifdef USE_RS485#if USE_RS485 = 3RS485_T;#endif#endifwhile(*p+ != )USART_SendData(USART3, (u8)*p);while (!(USART3-SR & USART_FLAG_TXE);#ifdef USE_RS485#if USE_RS485 = 3RS485_R;#endif#endifreturn ret;#endif/*-*/* UART4 -*/#ifdef USE_UART4/* * 函数名：UART4_Config * 描述 ：UART4 GPIO 配置,工作模式配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void UART4_Configration(void)GPIO_InitTypeDef GPIO_InitStructure;USART_InitTypeDef USART_InitStructure;/* config UART4 clock */RCC_APB2PeriphClockCmd(RCC_APB1Periph_UART4 | RCC_APB2Periph_GPIOC, ENABLE);/* UART4 GPIO config */* Configure UART4 Tx (PA.09) as alternate function push-pull */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); /* Configure UART4 Rx (PA.10) as input floating */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;GPIO_Init(GPIOB, &GPIO_InitStructure);/* UART4 mode config */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(UART4, &USART_InitStructure);USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);USART_Cmd(UART4, ENABLE);/* * 函数名：UART4_NVIC_Configuration * 描述 ：UART4中断优先级配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void UART4_NVIC_Configuration(void)NVIC_InitTypeDef NVIC_InitStructure; /* Configure the NVIC Preemption Priority Bits */ NVIC_PriorityGroupConfig(NVIC_PriorityGroup_3);/* Enable the USARTy Interrupt */NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn; NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;NVIC_Init(&NVIC_InitStructure);/* * 函数名：UART4_Config * 描述 ：UART4初始化 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void UART4_Config(void)UART4_Configration();UART4_NVIC_Configuration();/* * 函数名：UART4_printf * 描述 ：UART4打印函数 * 输入 ：格式化字符串指针*str，参量表 * 输出 : 打印字符串的长度，如果长度为-1,则表示打印失败 * 调用 ：外部调用 */int UART4_printf(char* str,.)long ret = 0;char tempMAX_LEN = 0;char *p = NULL;va_list list;p = temp;va_start(list,str); ret = vsprintf(temp,str,list); if(ret = MAX_LEN)return -1;#ifdef USE_RS485#if USE_RS485 = 4RS485_T;#endif#endifwhile(*p+ != )USART_SendData(UART4, (u8)*p);while (!(UART4-SR & USART_FLAG_TXE);#ifdef USE_RS485#if USE_RS485 = 4RS485_R;#endif#endifreturn ret;#endif/*-*/* UART5 -*/#ifdef USE_UART5/* * 函数名：UART5_Config * 描述 ：UART5 GPIO 配置,工作模式配置 * 输入 ：无 * 输出 : 无 * 调用 ：外部调用 */void UART5_Configration(void)GPIO_InitTypeDef GPIO_InitStructure;USART_InitTypeDef USART_InitStructure;/* config UART5 clock */RCC_APB2PeriphClockCmd(RCC_APB1Periph_UART5 | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOD, ENABLE);/* UART5 GPIO config */* Configure UART5 Tx (PA.09) as alternate function push-pull */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;GPIO_Init(GPIOB, &GPIO_InitStructure); /* Configure UART5 Rx (PA.10) as input floating */GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;