122 lines
3 KiB
C
122 lines
3 KiB
C
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#include <stdio.h>
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#include <conio.h>
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#include <process.h>
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#include <string.h>
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#include <windows.h>
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#define PERR(bSuccess, api) {if (!(bSuccess)) printf("%s: Error %d from %s \
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on line %d\n", __FILE__, GetLastError(), api, __LINE__);}
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char cr = '\r';
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char lf = '\n';
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char ctrlC = 3;
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int addLf = 0;
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HANDLE hfSerialPort;
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void readPort()
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{
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DWORD cbBytesRead;
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char inBuf[256];
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int i;
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BOOL bSuccess;
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SYSTEMTIME sysTimeStart;
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SYSTEMTIME sysTimeEnd;
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while (1)
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{
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GetSystemTime(&sysTimeStart);
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bSuccess = ReadFile(hfSerialPort, inBuf, sizeof(inBuf), &cbBytesRead,
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NULL);
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GetSystemTime(&sysTimeEnd);
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printf("StartingTime: Yr: %d Mn: %d DayofWeek: %d Day: %d Hr: %d Min: %d Sec: %d Milli: %d\n",
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sysTimeStart.wYear,
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sysTimeStart.wMonth,
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sysTimeStart.wDayOfWeek,
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sysTimeStart.wDay,
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sysTimeStart.wHour,
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sysTimeStart.wMinute,
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sysTimeStart.wSecond,
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sysTimeStart.wMilliseconds
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);
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printf("EndingTime: Yr: %d Mn: %d DayofWeek: %d Day: %d Hr: %d Min: %d Sec: %d Milli: %d\n",
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sysTimeEnd.wYear,
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sysTimeEnd.wMonth,
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sysTimeEnd.wDayOfWeek,
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sysTimeEnd.wDay,
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sysTimeEnd.wHour,
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sysTimeEnd.wMinute,
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sysTimeEnd.wSecond,
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sysTimeEnd.wMilliseconds
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);
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PERR(bSuccess, "ReadFile");
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if (bSuccess && (cbBytesRead == 0))
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puts("total timeout");
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else
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if (cbBytesRead < sizeof(inBuf))
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printf("\ainterval timeout, ");
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else
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printf("buffer full, ");
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printf("bytes read: %d\n", cbBytesRead);
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for (i = 0; i < (int) cbBytesRead; i++)
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{
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switch(inBuf[i])
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{
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case '\r':
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if (addLf)
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putchar(lf);
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putchar(inBuf[i]);
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break;
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default:
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putchar(inBuf[i]);
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break;
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}
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}
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}
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return;
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}
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int __cdecl main(int argc,char *argv[])
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{
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char szTemp[512];
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BOOL bSuccess;
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COMMTIMEOUTS ctmo;
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DCB dcb;
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hfSerialPort = CreateFile("COM2", GENERIC_READ | GENERIC_WRITE, 0,
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NULL, OPEN_EXISTING, 0, NULL );
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PERR(hfSerialPort != INVALID_HANDLE_VALUE, "CreateFile");
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bSuccess = GetCommState(hfSerialPort, &dcb);
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PERR(bSuccess, "GetCommState");
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dcb.BaudRate = 9600;
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dcb.fBinary = 1;
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dcb.fParity = 0;
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dcb.fOutxCtsFlow = 0;
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dcb.fOutxDsrFlow = 0;
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dcb.fDtrControl = DTR_CONTROL_DISABLE;
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dcb.fDsrSensitivity = 0;
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dcb.fTXContinueOnXoff = 0;
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dcb.fOutX = 1;
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dcb.fInX = 1;
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dcb.fErrorChar = 0;
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dcb.fNull = 1;
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dcb.fRtsControl = RTS_CONTROL_DISABLE;
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dcb.fAbortOnError = 0;
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dcb.Parity = NOPARITY;
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dcb.StopBits = ONESTOPBIT;
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bSuccess = SetCommState(hfSerialPort, &dcb);
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PERR(bSuccess, "SetCommState");
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ctmo.ReadIntervalTimeout = 1000;
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ctmo.ReadTotalTimeoutMultiplier = 0;
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ctmo.ReadTotalTimeoutConstant = 30000;
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ctmo.WriteTotalTimeoutMultiplier = 0;
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ctmo.WriteTotalTimeoutConstant = 0;
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bSuccess = SetCommTimeouts(hfSerialPort, &ctmo);
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PERR(bSuccess, "SetCommTimeouts");
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readPort();
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return(0);
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}
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