Visio studio 2015 使用串口

串口通讯是诸多传感器、执行器与主机间常用的通讯方式，在linux系统下串口通讯c++编程非常简单。然而，对于一些采用在windows下编译的环境来说，串口通讯在VS下的使用相对来说资料较少，因此，今天介绍下VS2015下的串口通讯编程。

Windows下编程使用串口：这里使用VS2015编程。

其中串口相关的头文件如下：

/*"Serial_Vs.h"*/#include<iostream>#include<TCHAR.H> #include<windows.h>HANDLESerial_open(LPCWSTR,int);intSerial_read(HANDLE,void*,int);intSerial_write(HANDLE,constvoid*,int);voidSerial_close(HANDLE);voidclear_buf(unsignedchar*,int);/**open serial@param COMx: eg:_T("COM1")@param BaudRate:return 0 success ,return Negative is haed err*/HANDLESerial_open(LPCWSTRCOMx,intBaudRate){       HANDLEhCom;       DCBdcb = { 0 };       hCom =CreateFile(COMx,              GENERIC_READ|GENERIC_WRITE,              0,              0,              OPEN_EXISTING,              0,//FILE_FLAG_OVERLAPPED,   //同步方式 或 重叠方式               0              );       if(hCom ==INVALID_HANDLE_VALUE)       {              DWORDdwError = GetLastError();              printf("Sorry, failed to open the serial\n");              //return -1;              printf("The program will terminate in 3 seconds\n");              Sleep(3000);              exit(0);       }       else              printf("The serial is successfully opened in a Baudrate %d!\n",BaudRate);       dcb.DCBlength =sizeof(DCB);       if(!GetCommState(hCom, &dcb))       {              DWORDdwError = GetLastError();              return(HANDLE)(-1);       }       dcb.BaudRate =BaudRate;   //波特率        dcb.ByteSize = 8;          //位数        dcb.Parity =NOPARITY;     //奇偶检验        dcb.StopBits =ONESTOPBIT;  //停止位数        if(!SetCommState(hCom, &dcb))       {              DWORDdwError = GetLastError();              return(HANDLE)(-1);       }       if(!PurgeComm(hCom,PURGE_RXCLEAR))   return(HANDLE)(-1);       SetupComm(hCom, 1024, 1024);       returnhCom;;}/**serial read@param Buf:data buf@param size:@return The len of read*/intSerial_read(HANDLEhCom,void*OutBuf,intsize){       DWORDcnt = 0;       ReadFile(hCom,OutBuf,size, &cnt, 0);       returncnt;}/**serial write@param Buf:data buf@param size:bytes of Buf@return The len of writen*/intSerial_write(HANDLEhCom,constvoid*Buf,intsize){       DWORDdw;       WriteFile(hCom,Buf,size, &dw,NULL);       returndw;}/**serial close*/voidSerial_close(HANDLEhCom){       CloseHandle(hCom);}/**clear buf*/voidclear_buf(unsignedchar*buf,intN){       inti;       for(i = 0; i <N; i++)buf[i] = 0;       buf[i] ='\0';}

主函数如下

/*main.cpp*/HANDLEhCom;int main(){          //--open serial port as a default baudrate 9600     hCom = Serial_open(_T(Portname), 9600);     //--Clear receive memory     PurgeComm(hCom,PURGE_RXCLEAR);     //--Close and reopen the port     Serial_close(hCom);}

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http://write.blog.csdn.net/postedit/51065789

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Beijing Institute of Technology-The University of British Columbia

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