249 lines
6.0 KiB
C
249 lines
6.0 KiB
C
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "windows.h"
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#define FAILURE printf("FAIL: %d\n",__LINE__);exit(1)
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VOID
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DumpCommState(
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IN DCB MyDcb
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) {
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printf("Current comm state: \n");
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printf("Size of DCB: %d\n",MyDcb.DCBlength);
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printf("Baud rate: %d\n",MyDcb.BaudRate);
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printf("Binary mode: %s\n",MyDcb.fBinary?"TRUE":"FALSE");
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printf("Parity checking: %s\n",MyDcb.fParity?"TRUE":"FALSE");
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printf("Out CTS Flow: %s\n",MyDcb.fOutxCtsFlow?"TRUE":"FALSE");
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printf("Out DSR Flow: %s\n",MyDcb.fOutxDsrFlow?"TRUE":"FALSE");
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printf("DTR control: %s\n",MyDcb.fDtrControl==DTR_CONTROL_DISABLE?"DISABLE":
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MyDcb.fDtrControl==DTR_CONTROL_ENABLE?"ENABLE":
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MyDcb.fDtrControl==DTR_CONTROL_HANDSHAKE?"HANDSHAKE":"INVALID!");
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printf("Dsr sensitive: %s\n",MyDcb.fDsrSensitivity?"TRUE":"FALSE");
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printf("Tx Contin xoff: %s\n",MyDcb.fTXContinueOnXoff?"TRUE":"FALSE");
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printf("Output X on/off: %s\n",MyDcb.fOutX?"ON":"OFF");
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printf("Input X on/off: %s\n",MyDcb.fInX?"ON":"OFF");
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printf("Error replace: %s\n",MyDcb.fErrorChar?"ON":"OFF");
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printf("Null stripping: %s\n",MyDcb.fNull?"ON":"OFF");
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printf("RTS control: %s\n",MyDcb.fRtsControl==RTS_CONTROL_DISABLE?"DISABLE":
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MyDcb.fRtsControl==RTS_CONTROL_ENABLE?"ENABLE":
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MyDcb.fRtsControl==RTS_CONTROL_HANDSHAKE?"HANDSHAKE":"TOGGLE");
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printf("Abort on error: %s\n",MyDcb.fAbortOnError?"ON":"OFF");
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printf("Xon Limit: %d\n",MyDcb.XonLim);
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printf("Xoff Limit: %d\n",MyDcb.XoffLim);
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printf("Valid bits/byte: %d\n",MyDcb.ByteSize);
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printf("Parity: %s\n",MyDcb.Parity==EVENPARITY?"EVEN":
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MyDcb.Parity==ODDPARITY?"ODD":
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MyDcb.Parity==MARKPARITY?"MARK":
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MyDcb.Parity==NOPARITY?"NO":"INVALID");
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printf("Stop bits: %s\n",MyDcb.StopBits==ONESTOPBIT?"1":
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MyDcb.StopBits==TWOSTOPBITS?"2":
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MyDcb.StopBits==ONE5STOPBITS?"1.5":"INVALID");
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printf("Xoff char: %x\n",MyDcb.XoffChar);
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printf("Xon char: %x\n",MyDcb.XonChar);
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printf("Error char: %x\n",MyDcb.ErrorChar);
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printf("EOF char: %x\n",MyDcb.EofChar);
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printf("Evt char: %x\n",MyDcb.EvtChar);
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}
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int __cdecl main(int argc,char *argv[]) {
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HANDLE hFile;
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char *MyPort = "COM1";
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DCB MyDcb;
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char firstString[] = "1200,n,8,1";
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char secondString[] = "1200,n,8,1,x";
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char thirdString[] = "1200,n,8,1,p";
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if (argc > 1) {
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MyPort = argv[1];
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}
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if ((hFile = CreateFile(
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MyPort,
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GENERIC_READ | GENERIC_WRITE,
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0,
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NULL,
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CREATE_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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NULL
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)) != ((HANDLE)-1)) {
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!BuildCommDCB(
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firstString,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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printf("mode string: %s\n",firstString);
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DumpCommState(MyDcb);
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if (!BuildCommDCB(
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secondString,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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printf("mode string: %s\n",secondString);
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DumpCommState(MyDcb);
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if (!BuildCommDCB(
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firstString,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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printf("mode string: %s\n",firstString);
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DumpCommState(MyDcb);
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if (!BuildCommDCB(
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thirdString,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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printf("mode string: %s\n",thirdString);
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DumpCommState(MyDcb);
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if (!BuildCommDCB(
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firstString,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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FAILURE;
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}
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printf("mode string: %s\n",firstString);
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DumpCommState(MyDcb);
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CloseHandle(hFile);
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} else {
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DWORD LastError;
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LastError = GetLastError();
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printf("Couldn't open the %s device.\n",MyPort);
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printf("Status of failed open is: %x\n",LastError);
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}
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return 1;
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}
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