WIN_API编程：从蓝牙借口读16进制数据并转成10进制写入TXT文件

#include <iostream> #include <Windows.h> #include <fstream> #include <time.h> using namespace std; HANDLE hCom;//定义串口句柄 OVERLAPPED m_ov;//当串口异步通信时，返回NULL COMSTAT comstat;//使用此结构体中的“cbInQue”变量，此变量为串口每次发送的数据的字节数 bool openport() { //打开串口 hCom=CreateFile("\\\\.\\COM15",//要打开的串口号 GENERIC_READ|GENERIC_WRITE,//允许对串口进行读写操作 0,//串口不支持共享 NULL,//无安全属性 OPEN_EXISTING,//打开已存在的设备 FILE_FLAG_OVERLAPPED,//异步通信方式 NULL);//通讯设备不能用模板打开 if(hCom == INVALID_HANDLE_VALUE) { CloseHandle(hCom); return false; } else return true; } int setupdcb(int rate_arg) { DCB dcb; int rate = rate_arg; memset(&dcb,0,sizeof(dcb)); dcb.DCBlength = sizeof(dcb); /*----------- Serial Port Config ----------*/ dcb.BaudRate = rate; dcb.Parity = NOPARITY; dcb.StopBits = ONESTOPBIT; dcb.ByteSize = 8; dcb.fOutxCtsFlow = 0; dcb.fOutxDsrFlow = 0; dcb.fDtrControl = DTR_CONTROL_DISABLE; dcb.fDsrSensitivity= 0; dcb.fRtsControl = RTS_CONTROL_DISABLE; dcb.fOutX = 0; dcb.fInX = 0; /*----------- misc parameters ------------*/ dcb.fErrorChar = 0; dcb.fBinary = 1; dcb.fNull = 0; dcb.fAbortOnError = 0; dcb.XonLim = 2; dcb.XoffLim = 4; dcb.XonChar = 0x13; dcb.XoffChar = 0x19; dcb.EvtChar = 0; return 1; } //定义读写超时 int setuptimeout(DWORD ReadInterval,//以毫秒为单位指定通信线上两个字符到达之间的最大时间 DWORD ReadTotalMultiplier,//以毫秒为单位指定一个乘数，用以计算读操作的总限时时间 DWORD ReadTotalconstant,//为零，指出读操作要立即返回已接收到的字符，即使未收到字符，读操作也要返回 DWORD WriteTotalMultiplier,//以毫秒为单位指定一个乘数，用以计算写操作的总限时时间 DWORD WriteTotalconstant)//为零，指出写操作要立即返回已接收到的字符，即使未收到字符，读操作也要返回 { COMMTIMEOUTS timeouts;//定义超时参数结构体 timeouts.ReadIntervalTimeout =ReadInterval; timeouts.ReadTotalTimeoutConstant =ReadTotalconstant; timeouts.ReadTotalTimeoutMultiplier =ReadTotalMultiplier; timeouts.WriteTotalTimeoutConstant =WriteTotalconstant; timeouts.WriteTotalTimeoutMultiplier=WriteTotalMultiplier; return 1; } void ReceiveChar(unsigned char ReadBuff[],DWORD m_nToRead) { BOOL bRead =TRUE; BOOL bResult =TRUE; DWORD dwError =0; DWORD BytesRead =0; time_t LocalTime; LocalTime =time(NULL); cout<<"测试时间:"<<ctime(&LocalTime)<<endl; ofstream fout; fout.open("c:\\writefile.txt",ios_base::app|ios_base::out); fout<<"------------------------This is just a experiment!---------------------------"<<endl; fout<<"---------------------血压单位：mmHg；心率单位：次/分钟-----------------------"<<endl; fout<<"测试时间："<<ctime(&LocalTime)<<endl; for( ; ; ) { bResult = ClearCommError(hCom,&dwError,&comstat); // 在使用ReadFile 函数进行读操作前，应先使用ClearCommError函数清除错误 if (comstat.cbInQue == 0)//COMSTAT结构返回串口状态消息，cbInQue的值代表输入缓冲区的字节数 continue; m_nToRead = comstat.cbInQue; bResult = ReadFile(hCom,ReadBuff,m_nToRead,&BytesRead,&m_ov); //memcpy(copy,ReadBuff,m_nToRead); switch(m_nToRead) { case(7): { fout<<"正在测量中，血压瞬时值（mmHg）："<<(int)ReadBuff[4]<<endl; //fout.close(); cout<<"正在测量中，血压瞬时值（mmHg）："<<(int)ReadBuff[4]<<endl; break; } case(8): { fout<<"测量完成（结果仅指示测试者当前身体状况）——高压："<<(int)ReadBuff[3]<<"；低压："<<(int)ReadBuff[4]<<"；心率："<<(int)ReadBuff[5]<<endl; //fout.close(); cout<<"测量完成（结果仅指示测试者当前身体状况）——高压："<<(int)ReadBuff[3]<<"；低压："<<(int)ReadBuff[4]<<"；心率："<<(int)ReadBuff[5]<<endl; break; } default: { break; } } } fout.close(); } void WriteChar(unsigned char WriteBuffer[6],DWORD m_nToSend) { BOOL bWrite = TRUE; BOOL bResult = TRUE; DWORD BytesSent = 0; if (bWrite) { m_ov.Offset = 0; m_ov.OffsetHigh = 0; bResult = WriteFile(hCom,//串口的句柄 WriteBuffer,// 即以该指针的值为首地址的nNumberOfBytesToWrite //个字节的数据将要写入串口的发送数据缓冲区 m_nToSend,//要写入的数据的字节数 &BytesSent,//指向一个DWORD数值，该数值返回实际写入的字节数 &m_ov); } } void main() { unsigned char OrderToSendToBegain[6] = {0xFD,0xFD,0xFA,0x05,0x0D,0x0A}; unsigned char OrderToSendToEnd[6] = {0xFD,0xFD,0xFE,0x06,0X0D,0x0A}; unsigned char ReadBuff[7]; bool open; for(int i = 0;i<7;i++) { ReadBuff[i] = 0x00; } open = openport(); if(open) cout<<"open port success!"<<endl; if(setupdcb(9600)) cout<<"setupDCB success!"<<endl; if(setuptimeout(0,0,0,0,0)) cout<<"settimeout success!"<<endl; SetCommMask( hCom, EV_RXCHAR|EV_TXEMPTY );//设置串口事件 SetupComm( hCom, 4096,4096); //设置读写缓冲区大小 PurgeComm(hCom, PURGE_RXCLEAR | PURGE_TXCLEAR | PURGE_RXABORT | PURGE_TXABORT); WriteChar(OrderToSendToBegain,6); cout<<"received data:"<<endl; ReceiveChar(ReadBuff,7); WriteChar(OrderToSendToEnd,6); }