2019年09月07日 | STM32五个串口同时收发函数配置

#include "user_usart.h"

#include "stm32f10x_usart.h"

/*使用microLib的方法*/

 /* 

int fputc(int ch, FILE *f)

{

USART_SendData(USART1, (uint8_t) ch);

while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET) {}

    return ch;

}

int GetKey (void)  { 

    while (!(USART1->SR & USART_FLAG_RXNE));

    return ((int)(USART1->DR & 0x1FF));

}

*/

//#if EN_USART1_RX   //如果使能了接收

//#if EN_USART1_RX   //如果使能了接收

//串口1中断服务程序

//注意,读取USARTx->SR能避免莫名其妙的错误   

//u8 USART_RX_BUF[USART_REC_LEN];     //接收缓冲,最大USART_REC_LEN个字节.

//接收状态

//bit15， 接收完成标志

//bit14， 接收到0x0d

//bit13~0， 接收到的有效字节数目

u8 checkdata[1]; //检测串口1接收的特定数据数据

//串口1队列定义

u8 UART1SendBuff[UART1BuffSize]; //发送数据

u8 UART1ReceBuff[UART1BuffSize]; //接收数据？

u16 UART1ReceIn = 0;//接收状态标记数据位  

u8  UART1ReceFullFlag = 0;//接收完数据标志位

//串口2队列定义

u8 UART2SendBuff[UART2BuffSize];

u8 UART2ReceBuff[UART2BuffSize];

u16 UART2ReceIn = 0;

u8  UART2ReceFullFlag = 0;

//串口3队列定义

u8 UART3SendBuff[UART3BuffSize];

u8 UART3ReceBuff[UART3BuffSize];

u16 UART3ReceIn = 0;

u8  UART3ReceFullFlag = 0;

//串口4队列定义

u8 UART4SendBuff[UART4BuffSize];

u8 UART4ReceBuff[UART4BuffSize];

u16 UART4ReceIn = 0;

u8  UART4ReceFullFlag = 0;

//串口5队列定义

u8 UART5SendBuff[UART5BuffSize];

u8 UART5ReceBuff[UART5BuffSize];

u16 UART5ReceIn = 0;

u8  UART5ReceFullFlag = 0;

u8    usartflag;  //串口中断接收数据的标志位 串口2 串口3

//串口1初始化

void USART1_Configuration(u32 bound)

{

GPIO_InitTypeDef GPIO_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure;

USART_InitTypeDef USART_InitStructure;;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_USART1,ENABLE);//开启GPIOA和USART1时钟

//USART1_TX   GPIOA.9

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9; //PA.9

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出

    GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.9

//USART1_RX   GPIOA.10初始化

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;//PA10

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入

    GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.10  

//Usart1 NVIC 配置

  NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2 ;//抢占优先级3

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级3

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能

NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器

//USART 初始化设置

USART_InitStructure.USART_BaudRate = bound;//串口波特率

USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式

USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位

USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位

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

USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);  //开启串口接收中断

USART_Cmd(USART1, ENABLE);                    //使能串口1 

}

//串口2初始化

void USART2_Configuration(u32 bound)

{

GPIO_InitTypeDef GPIO_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure;

USART_InitTypeDef USART_InitStructure;;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,ENABLE);//开启GPIOA和USART1时钟

//USART2_TX   GPIOA.2

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //PA.2

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出

    GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.2

//USART2_RX   GPIOA.3初始化

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;//PA3

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入

    GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化GPIOA.3  

//Usart2 NVIC 配置

    NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2 ;//抢占优先级3

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级3  响应

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能

NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器

//USART 初始化设置

USART_InitStructure.USART_BaudRate = bound;//串口波特率

USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式

USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位

USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位

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(USART2, &USART_InitStructure); //初始化串口2

USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);  //开启串口接收中断

USART_Cmd(USART2, ENABLE);                    //使能串口2 

}

//串口3初始化

void USART3_Configuration(u32 bound)

{

GPIO_InitTypeDef GPIO_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure;

USART_InitTypeDef USART_InitStructure;;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3,ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);//开启GPIOA和USART1时钟

//USART3_TX   GPIOB.10

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //PB.10

    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出

    GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOA.10

//USART3_RX   GPIOB.3初始化

    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;//PB11

    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;//浮空输入

    GPIO_Init(GPIOB, &GPIO_InitStructure);//初始化GPIOB.11  

//Usart3 NVIC 配置

    NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=2 ;//抢占优先级3

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //子优先级3

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道使能

NVIC_Init(&NVIC_InitStructure); //根据指定的参数初始化VIC寄存器

//USART 初始化设置

USART_InitStructure.USART_BaudRate = bound;//串口波特率

USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字长为8位数据格式

USART_InitStructure.USART_StopBits = USART_StopBits_1;//一个停止位

USART_InitStructure.USART_Parity = USART_Parity_No;//无奇偶校验位

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(USART3, &USART_InitStructure); //初始化串口3

USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);  //开启串口接收中断

USART_Cmd(USART3, ENABLE);                    //使能串口3 

}

//串口4初始化

void UART4_Configuration(u32 bound)

{

GPIO_InitTypeDef GPIO_InitStructure;

USART_InitTypeDef USART_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure; 

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE );

RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE );

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10; //UART4 TX；

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出；

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOC, &GPIO_InitStructure); //端口C；

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11; //UART4 RX；

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //浮空输入；

GPIO_Init(GPIOC, &GPIO_InitStructure); //端口C；

USART_InitStructure.USART_BaudRate = bound; //波特率；

USART_InitStructure.USART_WordLength = USART_WordLength_8b; //数据位8位；

USART_InitStructure.USART_StopBits = USART_StopBits_1; //停止位1位；

USART_InitStructure.USART_Parity = USART_Parity_No ; //无校验位；

USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

//无硬件流控；

USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

//收发模式；

USART_Init(UART4, &USART_InitStructure);//配置串口参数；

// NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置中断组，4位抢占优先级，4位响应优先级；

NVIC_InitStructure.NVIC_IRQChannel = UART4_IRQn; //中断号；

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //抢占优先级；

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //响应优先级；

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);

USART_Cmd(UART4, ENABLE); //使能串口；

}

//串口5初始化

void UART5_Configuration(u32 bound)

{

GPIO_InitTypeDef GPIO_InitStructure;

USART_InitTypeDef USART_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure; 

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_GPIOD, ENABLE );

RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART5, ENABLE );

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12; //UART5 TX；

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP; //复用推挽输出；

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOC, &GPIO_InitStructure); //端口C；

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2; //UART5 RX；

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //浮空输入；

GPIO_Init(GPIOD, &GPIO_InitStructure); //端口D；

USART_InitStructure.USART_BaudRate = bound; //波特率；

USART_InitStructure.USART_WordLength = USART_WordLength_8b; //数据位8位；

USART_InitStructure.USART_StopBits = USART_StopBits_1; //停止位1位；

USART_InitStructure.USART_Parity = USART_Parity_No ; //无校验位；

USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;

//无硬件流控；

USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;

//收发模式；

USART_Init(UART5, &USART_InitStructure);//配置串口参数；

//NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置中断组，4位抢占优先级，4位响应优先级；

NVIC_InitStructure.NVIC_IRQChannel = UART5_IRQn; //中断号；

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2; //抢占优先级；

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //响应优先级；