815 lines
30 KiB
C
815 lines
30 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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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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DWORD ValueFromEscape = 0;
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DWORD Func;
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DCB MyDcb;
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COMMPROP MyCommProp;
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DWORD NewXon;
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DWORD NewXoff;
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int scanfval;
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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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printf("We successfully opened the %s port.\n",MyPort);
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do {
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printf("^z=END 1=SETXOFF 2=SETXON 3=SETRTS\n"
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" 4=CLRRTS 5=SETDTR 6=CLRDTR\n"
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" 7=RESETDEV 8=SETBREAK 9=CLRBREAK\n"
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" SET 10=DSR HAND 11=CTS HAND 12=DCD HAND\n"
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" CLEAR 13=DSR HAND 14=CTS HAND 15=DCD HAND\n"
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" 16=DTR CONTROL ENABLE\n"
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" 17=DTR CONTROL DISABLE\n"
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" 18=DTR INPUT HANDSHAKE ENABLE\n"
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" 19=DTR INPUT HANDSHARE DISABLE (implies 17)\n"
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" 20=RTS CONTROL ENABLE\n"
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" 21=RTS CONTROL DISABLE\n"
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" 22=RTS INPUT HANDSHAKE ENABLE\n"
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" 23=RTS INPUT HANDSHAKE DISABLE (implies 21)\n"
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" 24=ClearCommError 25=GetCommModemStatus\n"
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" SET 26=AUTO RECEIVE Xxxx 27=AUTO TRANSMIT Xxxx\n"
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" CLEAR 28=AUTO RECEIVE Xxxx 29=AUTO TRANSMIT Xxxx: \n"
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" 30=Get Queue Sizes\n"
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" 31=Get XonLimit 32=Get XoffLimit\n"
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" 33=Set XonLimit 34=Set XoffLimit\n"
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" 35=Dump Comm State: ");
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if ((scanfval = scanf("%d",&Func)) == EOF) {
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printf("All done\n");
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break;
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} else if (scanfval != 1) {
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printf("Invalid input\n");
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} else {
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if ((Func >= 1) && (Func <= 35)) {
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switch (Func) {
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case 1:
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if (!EscapeCommFunction(
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hFile,
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SETXON
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 2:
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if (!EscapeCommFunction(
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hFile,
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SETXOFF
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 3:
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if (!EscapeCommFunction(
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hFile,
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SETRTS
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 4:
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if (!EscapeCommFunction(
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hFile,
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CLRRTS
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 5:
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if (!EscapeCommFunction(
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hFile,
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SETDTR
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 6:
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if (!EscapeCommFunction(
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hFile,
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CLRDTR
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 7:
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if (!EscapeCommFunction(
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hFile,
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RESETDEV
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 8:
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if (!EscapeCommFunction(
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hFile,
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SETBREAK
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 9:
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if (!EscapeCommFunction(
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hFile,
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CLRBREAK
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)) {
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printf("Bad status from escape: %d\n",GetLastError());
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}
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break;
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case 10:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fOutxDsrFlow = TRUE;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set comm state: %d\n",GetLastError());
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}
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}
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break;
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case 11:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fOutxCtsFlow = TRUE;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set comm state: %d\n",GetLastError());
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}
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}
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break;
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case 12:
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printf("Setting DCD HandShaking not implemented\n");
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break;
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case 13:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fOutxDsrFlow = FALSE;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set comm state: %d\n",GetLastError());
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}
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}
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break;
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case 14:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fOutxCtsFlow = FALSE;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set comm state: %d\n",GetLastError());
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}
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}
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break;
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case 15:
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printf("Clearing DCD HandShaking is not implemented.\n");
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break;
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case 16:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fDtrControl = DTR_CONTROL_ENABLE;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set comm state: %d\n",GetLastError());
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}
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}
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break;
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case 17:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fDtrControl = DTR_CONTROL_DISABLE;
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if (!SetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't set comm state: %d\n",GetLastError());
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}
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}
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break;
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case 18:
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if (!GetCommState(
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hFile,
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&MyDcb
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)) {
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printf("Couldn't get comm state: %d\n",GetLastError());
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} else {
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MyDcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
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if (!SetCommState(
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hFile,
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&MyDcb
|
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)) {
|
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|
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|
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printf("Couldn't set comm state: %d\n",GetLastError());
|
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}
|
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}
|
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|
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break;
|
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|
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case 19:
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if (!GetCommState(
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hFile,
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|
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&MyDcb
|
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)) {
|
||
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|
||
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printf("Couldn't get comm state: %d\n",GetLastError());
|
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|
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} else {
|
||
|
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|
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MyDcb.fDtrControl = DTR_CONTROL_DISABLE;
|
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|
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if (!SetCommState(
|
||
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hFile,
|
||
|
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&MyDcb
|
||
|
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)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
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}
|
||
|
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}
|
||
|
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break;
|
||
|
|
case 20:
|
||
|
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if (!GetCommState(
|
||
|
|
hFile,
|
||
|
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&MyDcb
|
||
|
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)) {
|
||
|
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|
||
|
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printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
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} else {
|
||
|
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|
||
|
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MyDcb.fRtsControl = RTS_CONTROL_ENABLE;
|
||
|
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if (!SetCommState(
|
||
|
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hFile,
|
||
|
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&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
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}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 21:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fRtsControl = RTS_CONTROL_DISABLE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 22:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fRtsControl = DTR_CONTROL_HANDSHAKE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 23:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fRtsControl = DTR_CONTROL_DISABLE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 24: {
|
||
|
|
|
||
|
|
DWORD Errors;
|
||
|
|
COMSTAT LocalComStat = {0};
|
||
|
|
|
||
|
|
if (!ClearCommError(
|
||
|
|
hFile,
|
||
|
|
&Errors,
|
||
|
|
&LocalComStat
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't clear errors: %d\n",GetLastError());
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
if (!Errors) {
|
||
|
|
|
||
|
|
printf("No errors\n");
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
if (Errors & CE_RXOVER) {
|
||
|
|
|
||
|
|
printf("Error: CE_RXOVER\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Errors & CE_OVERRUN) {
|
||
|
|
|
||
|
|
printf("Error: CE_OVERRUN\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Errors & CE_RXPARITY) {
|
||
|
|
|
||
|
|
printf("Error: CE_RXPARITY\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Errors & CE_FRAME) {
|
||
|
|
|
||
|
|
printf("Error: CE_FRAME\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Errors & CE_BREAK) {
|
||
|
|
|
||
|
|
printf("Error: CE_BREAK\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (Errors & ~(CE_RXOVER |
|
||
|
|
CE_OVERRUN |
|
||
|
|
CE_RXPARITY |
|
||
|
|
CE_FRAME |
|
||
|
|
CE_BREAK)) {
|
||
|
|
|
||
|
|
printf("Unknown errors: %x\n",Errors);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
printf("Comstat values------------\n");
|
||
|
|
if (LocalComStat.fCtsHold) {
|
||
|
|
|
||
|
|
printf("Holding due to Cts\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (LocalComStat.fDsrHold) {
|
||
|
|
|
||
|
|
printf("Holding due to Dsr\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (LocalComStat.fRlsdHold) {
|
||
|
|
|
||
|
|
printf("Holding due to Xoff received\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (LocalComStat.fXoffSent) {
|
||
|
|
|
||
|
|
printf("Holding due to Xoff sent\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (LocalComStat.fEof) {
|
||
|
|
|
||
|
|
printf("Eof Seen\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (LocalComStat.fTxim) {
|
||
|
|
|
||
|
|
printf("Immediate character being sent\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
printf("Chars in typeahead: %d\n",LocalComStat.cbInQue);
|
||
|
|
printf("Chars to be sent: %d\n",LocalComStat.cbOutQue);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
case 25: {
|
||
|
|
DWORD ModemStat;
|
||
|
|
|
||
|
|
if (!GetCommModemStatus(
|
||
|
|
hFile,
|
||
|
|
&ModemStat
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get the modem stat: %d\n",GetLastError());
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
printf("Modem bits set---------\n");
|
||
|
|
if (ModemStat & MS_CTS_ON) {
|
||
|
|
|
||
|
|
printf("CTS is ON\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (ModemStat & MS_DSR_ON) {
|
||
|
|
|
||
|
|
printf("DSR is ON\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (ModemStat & MS_RING_ON) {
|
||
|
|
|
||
|
|
printf("RING is ON\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (ModemStat & MS_RLSD_ON) {
|
||
|
|
|
||
|
|
printf("RLSD is ON\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
if (ModemStat & ~(MS_CTS_ON |
|
||
|
|
MS_DSR_ON |
|
||
|
|
MS_RING_ON |
|
||
|
|
MS_RLSD_ON)) {
|
||
|
|
|
||
|
|
printf("Unknown Modem Stat: %x\n",ModemStat);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
case 26:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fInX = TRUE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 27:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fOutX = TRUE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 28:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fInX = FALSE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 29:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.fOutX = FALSE;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 30:
|
||
|
|
|
||
|
|
if (!GetCommProperties(
|
||
|
|
hFile,
|
||
|
|
&MyCommProp
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
printf("Rx Queue Size: %d Tx Queue Size: %d\n",
|
||
|
|
MyCommProp.dwCurrentRxQueue,
|
||
|
|
MyCommProp.dwCurrentTxQueue
|
||
|
|
);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 31:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
printf("XonLimit is %d\n",MyDcb.XonLim);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
case 32:
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
printf("XoffLimit is %d\n",MyDcb.XoffLim);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
case 33:
|
||
|
|
printf("The New Xon limit Value: ");
|
||
|
|
scanf("%d",&NewXon);
|
||
|
|
printf("Setting Xon limit to %d\n",NewXon);
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.XonLim = (WORD)NewXon;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 34:
|
||
|
|
|
||
|
|
printf("The New Xoff limit Value: ");
|
||
|
|
scanf("%d",&NewXoff);
|
||
|
|
printf("Setting Xoff limit to %d\n",NewXoff);
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
MyDcb.XoffLim = (WORD)NewXoff;
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't set comm state: %d\n",GetLastError());
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 35:
|
||
|
|
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
||
|
|
} else {
|
||
|
|
|
||
|
|
DumpCommState(MyDcb);
|
||
|
|
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
printf("Invalid Input\n");
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
} while (TRUE);
|
||
|
|
|
||
|
|
|
||
|
|
CloseHandle(hFile);
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
DWORD LastError;
|
||
|
|
LastError = GetLastError();
|
||
|
|
printf("Couldn't open the %s device.\n",MyPort);
|
||
|
|
printf("Status of failed open is: %x\n",LastError);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|