mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
183 lines
4.8 KiB
183 lines
4.8 KiB
|
|
#include <string.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <time.h>
|
|
#include "windows.h"
|
|
|
|
void main(int argc,char *argv[]) {
|
|
|
|
HANDLE hFile;
|
|
DCB MyDcb;
|
|
DCB GottenDcb;
|
|
char *MyPort = "COM1";
|
|
|
|
if (argc > 1) {
|
|
|
|
MyPort = argv[1];
|
|
|
|
}
|
|
|
|
printf("Using port %s\n",MyPort);
|
|
|
|
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);
|
|
|
|
//
|
|
// Get the state of the comm port and then
|
|
// adjust the values to our liking.
|
|
//
|
|
|
|
if (!GetCommState(
|
|
hFile,
|
|
&MyDcb
|
|
)) {
|
|
|
|
printf("Couldn't get comm state: %d\n",GetLastError());
|
|
exit(1);
|
|
|
|
} else {
|
|
|
|
//
|
|
// We immediately to a setcomm state on what we got
|
|
// back. This will test that GetCommState can *ONLY*
|
|
// return good data.
|
|
//
|
|
|
|
printf("Sanity check on GetCommState()\n");
|
|
if (!SetCommState(
|
|
hFile,
|
|
&MyDcb
|
|
)) {
|
|
|
|
printf("Bad GetCommState: %d\n",GetLastError());
|
|
exit(1);
|
|
|
|
}
|
|
printf("GetCommState is ok\n");
|
|
|
|
//
|
|
// We've successfully opened the file. Set the state of
|
|
// the comm device.
|
|
//
|
|
|
|
MyDcb.BaudRate = 19200;
|
|
MyDcb.ByteSize = 8;
|
|
MyDcb.Parity = NOPARITY;
|
|
MyDcb.StopBits = ONESTOPBIT;
|
|
MyDcb.XonChar = 20;
|
|
MyDcb.XoffChar = 25;
|
|
MyDcb.ErrorChar = 1;
|
|
MyDcb.EofChar = 2;
|
|
MyDcb.EvtChar = 3;
|
|
|
|
if (SetCommState(
|
|
hFile,
|
|
&MyDcb
|
|
)) {
|
|
|
|
printf("We successfully set the state of the %s port.\n",MyPort);
|
|
|
|
//
|
|
// Now we get the comm state again and make sure
|
|
// the adjusted values are as we like them.
|
|
//
|
|
|
|
if (!GetCommState(
|
|
hFile,
|
|
&GottenDcb
|
|
)) {
|
|
|
|
printf("Couldn't get the adjusted dcb: %d\n",GetLastError());
|
|
exit(1);
|
|
|
|
} else {
|
|
|
|
printf("Got the new state - checking\n");
|
|
|
|
if (MyDcb.BaudRate != GottenDcb.BaudRate) {
|
|
|
|
printf("MyDcb.BaudRate != GottenDcb.BaudRate: %d %d\n",MyDcb.BaudRate,GottenDcb.BaudRate);
|
|
|
|
}
|
|
|
|
if (MyDcb.ByteSize != GottenDcb.ByteSize) {
|
|
|
|
printf("MyDcb.ByteSize != GottenDcb.ByteSize: %d %d\n",MyDcb.ByteSize,GottenDcb.ByteSize);
|
|
|
|
}
|
|
|
|
if (MyDcb.Parity != GottenDcb.Parity) {
|
|
|
|
printf("MyDcb.Parity != GottenDcb.Parity: %d %d\n",MyDcb.Parity,GottenDcb.Parity);
|
|
|
|
}
|
|
|
|
if (MyDcb.StopBits != GottenDcb.StopBits) {
|
|
|
|
printf("MyDcb.StopBits != GottenDcb.StopBits: %d %d\n",MyDcb.StopBits,GottenDcb.StopBits);
|
|
|
|
}
|
|
|
|
if (MyDcb.XonChar != GottenDcb.XonChar) {
|
|
|
|
printf("MyDcb.XonChar != GottenDcb.XonChar: %d %d\n",MyDcb.XonChar,GottenDcb.XonChar);
|
|
|
|
}
|
|
|
|
if (MyDcb.XoffChar != GottenDcb.XoffChar) {
|
|
|
|
printf("MyDcb.XoffChar != GottenDcb.XoffChar: %d %d\n",MyDcb.XoffChar,GottenDcb.XoffChar);
|
|
|
|
}
|
|
|
|
if (MyDcb.ErrorChar != GottenDcb.ErrorChar) {
|
|
|
|
printf("MyDcb.ErrorChar != GottenDcb.ErrorChar: %d %d\n",MyDcb.ErrorChar,GottenDcb.ErrorChar);
|
|
|
|
}
|
|
|
|
if (MyDcb.EofChar != GottenDcb.EofChar) {
|
|
|
|
printf("MyDcb.EofChar != GottenDcb.EofChar: %d %d\n",MyDcb.EofChar,GottenDcb.EofChar);
|
|
|
|
}
|
|
|
|
if (MyDcb.EvtChar != GottenDcb.EvtChar) {
|
|
|
|
printf("MyDcb.EvtChar != GottenDcb.EvtChar: %d %d\n",MyDcb.EvtChar,GottenDcb.EvtChar);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
DWORD LastError;
|
|
LastError = GetLastError();
|
|
printf("Couldn't set the %s device.\n",MyPort);
|
|
printf("Status of failed set is: %d\n",LastError);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
DWORD LastError;
|
|
LastError = GetLastError();
|
|
printf("Couldn't open the %s device.\n",MyPort);
|
|
printf("Status of failed open is: %d\n",LastError);
|
|
|
|
}
|
|
|
|
}
|