stm32多串口收發數據源程序

ID:189966 · 發表于 2019-7-19 17:27

stm32多串口收發數據
#include "user_usart.h"
#include "stm32f10x_usart.h"
#include "user_adc.h"
#include "user_74_595.h"
#include "user_74_165.h"
#include "user_gpio.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中斷服務程序
//注意,讀取USARTx->SR能避免莫名其妙的錯誤
//u8 USART_RX_BUF[USART_REC_LEN];    //接收緩沖,最大USART_REC_LEN個字節.
//接收狀態
//bit15，       接收完成標志
//bit14，       接收到0x0d
//bit13~0，       接收到的有效字節數目
u16 USART_RX_STA=0;    //接收狀態標記

//串口1隊列定義
u8       UART1SendBuff[UART1BuffSize];             //發送數據
u8       UART1ReceBuff[UART1BuffSize];             //接收數據？
u16 UART1ReceIn = 0;//接收狀態標記數據位
u8  UART1ReceFullFlag = 0;//接收完數據標志位

//串口2隊列定義
u8       UART2SendBuff[UART2BuffSize];
u8       UART2ReceBuff[UART2BuffSize];
u16 UART2ReceIn = 0;
u8  UART2ReceFullFlag = 0;

//串口3隊列定義
u8       UART3SendBuff[UART3BuffSize];
u8       UART3ReceBuff[UART3BuffSize];
u16 UART3ReceIn = 0;
u8  UART3ReceFullFlag = 0;

//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);//開啟GPIOA和USART1時鐘

      //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;       //復用推挽輸出
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;//浮空輸入
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 ;//搶占優先級3
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;             //子優先級3
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                      //IRQ通道使能
      NVIC_Init(&NVIC_InitStructure);       //根據指定的參數初始化VIC寄存器

      //USART 初始化設置
      USART_InitStructure.USART_BaudRate = bound;//串口波特率
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字長為8位數據格式
      USART_InitStructure.USART_StopBits = USART_StopBits_1;//一個停止位
      USART_InitStructure.USART_Parity = USART_Parity_No;//無奇偶校驗位
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//無硬件數據流控制
      USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;       //收發模式
USART_Init(USART1, &USART_InitStructure); //初始化串口1

      USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);  //開啟串口接收中斷
      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);//開啟GPIOA和USART1時鐘

      //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;       //復用推挽輸出
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;//浮空輸入
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 ;//搶占優先級3
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;             //子優先級3
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                      //IRQ通道使能
      NVIC_Init(&NVIC_InitStructure);       //根據指定的參數初始化VIC寄存器

      //USART 初始化設置
      USART_InitStructure.USART_BaudRate = bound;//串口波特率
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字長為8位數據格式
      USART_InitStructure.USART_StopBits = USART_StopBits_1;//一個停止位
      USART_InitStructure.USART_Parity = USART_Parity_No;//無奇偶校驗位
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//無硬件數據流控制
      USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;       //收發模式
USART_Init(USART2, &USART_InitStructure); //初始化串口2

      USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);  //開啟串口接收中斷
      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);//開啟GPIOA和USART1時鐘

      //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;       //復用推挽輸出
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;//浮空輸入
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 ;//搶占優先級3
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;             //子優先級3
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;                      //IRQ通道使能
      NVIC_Init(&NVIC_InitStructure);       //根據指定的參數初始化VIC寄存器

      //USART 初始化設置
      USART_InitStructure.USART_BaudRate = bound;//串口波特率
      USART_InitStructure.USART_WordLength = USART_WordLength_8b;//字長為8位數據格式
      USART_InitStructure.USART_StopBits = USART_StopBits_1;//一個停止位
      USART_InitStructure.USART_Parity = USART_Parity_No;//無奇偶校驗位
      USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;//無硬件數據流控制
      USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;       //收發模式
USART_Init(USART3, &USART_InitStructure); //初始化串口3

      USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);  //開啟串口接收中斷
      USART_Cmd(USART3, ENABLE);                   //使能串口3
}

//串口1發送一幀數據
void USART1_SendOneData(uint8_t SendOneData)
{
      USART_SendData(USART1, SendOneData);
      while (USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET)
      {}
}

//串口2發送一幀數據
void USART2_SendOneData(uint8_t SendOneData)
{
      USART_SendData(USART2, SendOneData);
      while (USART_GetFlagStatus(USART2, USART_FLAG_TC) == RESET)
      {}
}

//串口3發送一幀數據
void USART3_SendOneData(uint8_t SendOneData)
{
      USART_SendData(USART3, SendOneData);
      while (USART_GetFlagStatus(USART3, USART_FLAG_TC) == RESET)
      {}
}

//串口1發送一列數據
void USART1_SendUnfixedData(uint8_t *Buffer, uint8_t Length)
{
      uint8_t  i;
      for(i=0;i<Length;i++)
      {
            USART1_SendOneData(*Buffer++);
      }
}

//串口2發送一列數據
void USART2_SendUnfixedData(uint8_t *Buffer, uint8_t Length)
{
      uint8_t  i;
      for(i=0;i<Length;i++)
      {
            USART2_SendOneData(*Buffer++);
      }
}

//串口3發送一列數據
void USART3_SendUnfixedData(uint8_t *Buffer, uint8_t Length)
{
      uint8_t  i;
      LED_ON;
      for(i=0;i<Length;i++)
      {
            USART3_SendOneData(*Buffer++);
      }
      LED_OFF;
}

//串口1中斷服務函數
void USART1_IRQHandler(void)
{
      u8 Res;//數據暫存
      if(USART_GetITStatus(USART1, USART_IT_RXNE) != RESET)  //接收中斷
      {
            Res =USART_ReceiveData(USART1);       //讀取接收到的數據
            switch(UART1ReceIn)//讀取接收到的數據有幾位每一位對應的數據協議校驗
            {
                     case 0:
                              if(Res=='T')
                                    UART1ReceBuff[UART1ReceIn++] = Res;
                              else
                                    UART1ReceIn = 0;
                              break;
                     case 1:
                              if(Res=='M')
                                    UART1ReceBuff[UART1ReceIn++] = Res;
                              else
                                    UART1ReceIn = 0;
                              break;
                     case 2:
                              if(Res==0x0f)
                                    UART1ReceBuff[UART1ReceIn++] = Res;
                              else
                                    UART1ReceIn = 0;
                              break;
                     case 3:
                              if(Res==0x01)
                                    UART1ReceBuff[UART1ReceIn++] = Res;
                              else
                                    UART1ReceIn = 0;
                              break;
                     case 4:
                              if(Res==0x31)
                                    UART1ReceBuff[UART1ReceIn++] = Res;
                              else
                                    UART1ReceIn = 0;
                              break;
                     default:
                              UART1ReceBuff[UART1ReceIn++] = Res;
                              break;
            }

            if(UART1ReceIn >= 57)
            {
                     UART1ReceFullFlag = 1;       //數據完整接受完
            }
            USART_ClearITPendingBit(USART1, USART_IT_RXNE);//清除相對應的中斷位清除中斷預處理位USART_ClearITPendingBit左移八位是USART_ClearFlag
      }
      else if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)       // 發送中斷  USART_GetITStatus
      {
            USART_ClearITPendingBit(USART1, USART_IT_TXE);                                     // clear interrupt  清除中斷預處理位
      }
}

//串口2中斷服務函數
void USART2_IRQHandler(void)
{

      u8 Res;
#if SYSTEM_SUPPORT_OS                //如果SYSTEM_SUPPORT_OS為真，則需要支持OS.
      OSIntEnter();
#endif
      if(USART_GetITStatus(USART2, USART_IT_RXNE) != RESET)  //接收中斷(接收到的數據必須是0x0d 0x0a結尾)
            {
            Res =USART_ReceiveData(USART2);       //讀取接收到的數據USART_ReceiveData

            if((USART_RX_STA&0x8000)==0)//接收未完成
                     {
                     if(USART_RX_STA&0x4000)//接收到了0x0d
                              {
                              if(Res!=0x0a)USART_RX_STA=0;//接收錯誤,重新開始
                              else USART_RX_STA|=0x8000;       //接收完成了
                              }
                     else //還沒收到0X0D
                              {
                              if(Res==0x0d)USART_RX_STA|=0x4000;
                              else
                                    {
                                    UART2ReceBuff[USART_RX_STA&0X3FFF]=Res ;
                                    USART_RX_STA++;
                                    if(USART_RX_STA>(USART_REC_LEN-1))USART_RX_STA=0;//接收數據錯誤,重新開始接收
                                    }
                              }
                     }
}
#if SYSTEM_SUPPORT_OS       //如果SYSTEM_SUPPORT_OS為真，則需要支持OS.
      OSIntExit();
#endif
}
//串口3中斷服務函數
void USART3_IRQHandler(void)
{
      u8 Res;//數據暫存
      if(USART_GetITStatus(USART3, USART_IT_RXNE) != RESET)  //接收中斷
      {
            Res =USART_ReceiveData(USART3);       //讀取接收到的數據 USART_ReceiveData
            switch(UART3ReceIn)//讀取接收到的數據有幾位每一位對應的數據協議校驗
            {
                     case 0:
                              if(Res=='T')
                                    UART3ReceBuff[UART3ReceIn++] = Res;
                              else
                                    UART3ReceIn = 0;
                              break;
                     case 1:
                              if(Res=='M')
                                    UART3ReceBuff[UART3ReceIn++] = Res;
                              else
                                    UART3ReceIn = 0;
                              break;
                     case 2:
                              if(Res==0x0f)
                                    UART3ReceBuff[UART3ReceIn++] = Res;
                              else
                                    UART3ReceIn = 0;
                              break;
                     case 3:
                              if(Res==0x01)
                                    UART3ReceBuff[UART3ReceIn++] = Res;
                              else
                                    UART3ReceIn = 0;
                              break;
                     case 4:
                              if(Res==0x31)
                                    UART3ReceBuff[UART3ReceIn++] = Res;
                              else
                                    UART3ReceIn = 0;
                              break;
                     default:
                              UART3ReceBuff[UART3ReceIn++] = Res;
                              break;
            }

            if(UART3ReceIn >= 57)
            {
                     UART3ReceFullFlag = 1;       //數據完整接受完
            }
            USART_ClearITPendingBit(USART3, USART_IT_RXNE);//清除相對應的中斷位清除中斷預處理位USART_ClearITPendingBit左移八位是USART_ClearFlag
      }
      else if(USART_GetITStatus(USART3, USART_IT_TXE) != RESET)       // 發送中斷  USART_GetITStatus
      {
            USART_ClearITPendingBit(USART3, USART_IT_TXE);                                     // clear interrupt  清除中斷預處理位
      }
}

//發送開關量輸入數據
void SendInputData(void)
{
      // 組包，第一幀
      UART1SendBuff[0] = 0XAA;
      UART1SendBuff[1] = 0XBB;
      UART1SendBuff[2] = ReadInData.ByteData[0];
      UART1SendBuff[3] = ReadInData.ByteData[1];
      UART1SendBuff[4] = ReadInData.ByteData[2];
      UART1SendBuff[5] = ReadInData.ByteData[3]; //165檢測結構
      UART1SendBuff[6] = 0XCC;
      UART1SendBuff[7] = 0XDD;

      // 發送第一幀數據
      USART3_SendUnfixedData(UART1SendBuff,8);
      Delay_m(350);             // 延時，和計算機軟件時間匹配
}

void SendAnalogData(void)                      // 通過串口發送模擬量數據
{
      // 組包，第一幀
      UART1SendBuff[0] = 0XAA;
      UART1SendBuff[1] = 0XBB;
      UART1SendBuff[2] = 0X01;
      UART1SendBuff[6] = 0XCC;
      UART1SendBuff[7] = 0XDD;

      UART1SendBuff[3] = 0x10;
      UART1SendBuff[4] = (AnalogChannel[0].AveVal >> 8);
      UART1SendBuff[5] = (u8)AnalogChannel[0].AveVal;

      // 發送第一幀數據
      USART3_SendUnfixedData(UART1SendBuff, 8);

      Delay_m(300);             // 延時，和計算機軟件時間匹配

      //---------------------------------------------------------
      // 組包，第二幀
      UART1SendBuff[3] = 0x20;
      UART1SendBuff[4] = (AnalogChannel[1].AveVal >> 8);
      UART1SendBuff[5] = (u8)AnalogChannel[1].AveVal;

      // 發送第二幀數據
      USART3_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配
      /*
      //---------------------------------------------------------
      // 組包，第三幀
      UART1SendBuff[3] = 0x30;
      UART1SendBuff[4] = (AnalogChannel[2].AveVal >> 8);
      UART1SendBuff[5] = (u8)AnalogChannel[2].AveVal;

      // 發送第三幀數據
      USART3_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配


      //---------------------------------------------------------
      // 組包，第四幀
      UART1SendBuff[1] = 0x40;
      UART1SendBuff[2] = (AnalogChannel[3].AveVal >> 8);
      UART1SendBuff[3] = (u8)AnalogChannel[3].AveVal;

      // 發送第四幀數據
      USART_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配

      //---------------------------------------------------------
      // 組包，第五幀
      UART1SendBuff[1] = 0x50;
      UART1SendBuff[2] = (AnalogChannel[4].AveVal >> 8);
      UART1SendBuff[3] = (u8)AnalogChannel[4].AveVal;

      // 發送第五幀數據
      USART_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配

      //---------------------------------------------------------
      // 組包，第六幀
      UART1SendBuff[1] = 0x60;
      UART1SendBuff[2] = (AnalogChannel[5].AveVal >> 8);
      UART1SendBuff[3] = (u8)AnalogChannel[5].AveVal;

      // 發送第六幀數據
      USART_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配

      //---------------------------------------------------------
      // 組包，第七幀
      UART1SendBuff[1] = 0x70;
      UART1SendBuff[2] = (AnalogChannel[6].AveVal >> 8);
      UART1SendBuff[3] = (u8)AnalogChannel[6].AveVal;

      // 發送第七幀數據
      USART_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配

      //---------------------------------------------------------
      // 組包，第八幀
      UART1SendBuff[1] = 0x80;
      UART1SendBuff[2] = (AnalogChannel[7].AveVal >> 8);
      UART1SendBuff[3] = (u8)AnalogChannel[7].AveVal;

      // 發送第八幀數據
      USART_SendUnfixedData(UART1SendBuff, 8);
      Delay_m(300);             // 延時，和計算機軟件時間匹配
      */

}

上面這個是壓縮包里面的user_usart.c文件:

STM32加232串口發多串口.7z (195.06 KB, 下載次數: 83)

ID:535129 · 發表于 2019-8-13 17:20

哇，牛啊，大哥！
我最近要寫一個激光雷達和32單片機的串口通信，但是有問題，激光雷達返回的值不能被單片機調用，你能幫下忙嗎？

ID:105206 · 發表于 2020-4-16 23:27

學習下，感謝分享。

ID:891089 · 發表于 2021-4-20 20:45

樓主發的展示程序在HARDWARE\User_usart\user_usart.c里面

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stm32多串口收發數據源程序