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#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "windows.h"
void main(int argc,char *argv[]) {
HANDLE hFile; char *MyPort = "COM1"; DWORD ValueFromEscape = 0; DWORD Func; int scanfval;
if (argc > 1) {
MyPort = argv[1];
}
if ((hFile = CreateFile( MyPort, GENERIC_READ | GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL )) != ((HANDLE)-1)) {
printf("We successfully opened the %s port.\n",MyPort);
do {
printf("^z=END 1=GETTIMEOUTS 2=SETTIMEOUTS:");
if ((scanfval = scanf("%d",&Func)) == EOF) {
printf("All done\n"); break;
} else if (scanfval != 1) {
printf("Invalid input\n");
} else {
if ((Func >= 1) && (Func <= 2)) {
switch (Func) { case 1: {
COMMTIMEOUTS OldTimeouts; if (!GetCommTimeouts( hFile, &OldTimeouts )) {
printf("Error getting timeouts: %d\n",GetLastError());
} else {
printf("ReadIntervalTimeout: %d\n",OldTimeouts.ReadIntervalTimeout); printf("ReadTotalTimeoutMultiplier: %d\n",OldTimeouts.ReadTotalTimeoutMultiplier); printf("ReadTotalTimeoutConstant: %d\n",OldTimeouts.ReadTotalTimeoutConstant); printf("WriteTotalTimeoutMultipler: %d\n",OldTimeouts.WriteTotalTimeoutMultiplier); printf("WriteTotalTimeoutConstant: %d\n",OldTimeouts.WriteTotalTimeoutConstant);
}
break;
} case 2: {
COMMTIMEOUTS NewTimeout;
printf("ReadIntervalTimeout[CR Implies use old value]: ");
if ((scanfval = scanf("%d",&NewTimeout.ReadIntervalTimeout)) == EOF) {
printf("All done\n"); exit(1);
} else if (!scanfval) {
NewTimeout.ReadIntervalTimeout = ~0;
} else if (scanfval != 1) {
printf("Bad input\n"); break;
}
printf("ReadTotalTimeoutMultiplier[CR Implies use old value]: ");
if ((scanfval = scanf("%d",&NewTimeout.ReadTotalTimeoutMultiplier)) == EOF) {
printf("All done\n"); exit(1);
} else if (!scanfval) {
NewTimeout.ReadTotalTimeoutMultiplier = ~0;
} else if (scanfval != 1) {
printf("Bad input\n"); break;
}
printf("ReadTotalTimeoutConstant[CR Implies use old value]: ");
if ((scanfval = scanf("%d",&NewTimeout.ReadTotalTimeoutConstant)) == EOF) {
printf("All done\n"); exit(1);
} else if (!scanfval) {
NewTimeout.ReadTotalTimeoutConstant = ~0;
} else if (scanfval != 1) {
printf("Bad input\n"); break;
}
printf("WriteTotalTimeoutMultipler[CR Implies use old value]: ");
if ((scanfval = scanf("%d",&NewTimeout.WriteTotalTimeoutMultiplier)) == EOF) {
printf("All done\n"); exit(1);
} else if (!scanfval) {
NewTimeout.WriteTotalTimeoutMultiplier = ~0;
} else if (scanfval != 1) {
printf("Bad input\n"); break;
}
printf("WriteTotalTimeoutConstant[CR Implies use old value]: ");
if ((scanfval = scanf("%d",&NewTimeout.WriteTotalTimeoutConstant)) == EOF) {
printf("All done\n"); exit(1);
} else if (!scanfval) {
NewTimeout.WriteTotalTimeoutConstant = ~0;
} else if (scanfval != 1) {
printf("Bad input\n"); break;
}
printf("ReadIntervalTimeout: %d\n",NewTimeout.ReadIntervalTimeout); printf("ReadTotalTimeoutMultiplier: %d\n",NewTimeout.ReadTotalTimeoutMultiplier); printf("ReadTotalTimeoutConstant: %d\n",NewTimeout.ReadTotalTimeoutConstant); printf("WriteTotalTimeoutMultipler: %d\n",NewTimeout.WriteTotalTimeoutMultiplier); printf("WriteTotalTimeoutConstant: %d\n",NewTimeout.WriteTotalTimeoutConstant); if (!SetCommTimeouts( hFile, &NewTimeout )) {
printf("Error setting timeouts: %d\n",GetLastError());
}
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);
}
}
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