193 lines
3.3 KiB
C
193 lines
3.3 KiB
C
|
//
|
||
|
|
// Test the get modem output signals ioctl.
|
||
|
|
//
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <time.h>
|
||
|
|
|
||
|
|
#include "nt.h"
|
||
|
|
#include "ntrtl.h"
|
||
|
|
#include "nturtl.h"
|
||
|
|
#include "windows.h"
|
||
|
|
#include "ntddser.h"
|
||
|
|
|
||
|
|
//
|
||
|
|
// This program assumes that it is using a loopback connector.
|
||
|
|
//
|
||
|
|
|
||
|
|
#define MAX_CHECK 100000
|
||
|
|
|
||
|
|
ULONG CheckValues[MAX_CHECK];
|
||
|
|
ULONG ReadValues[MAX_CHECK];
|
||
|
|
|
||
|
|
void main(int argc,char *argv[]) {
|
||
|
|
|
||
|
|
HANDLE hFile;
|
||
|
|
DCB MyDcb;
|
||
|
|
ULONG mask;
|
||
|
|
ULONG retSize;
|
||
|
|
|
||
|
|
char *MyPort = "COM1";
|
||
|
|
|
||
|
|
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("Couldn't open the port %s\n",MyPort);
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!GetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't get the comm state\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Set the baud to 19200 and the data bits to 8
|
||
|
|
// (We want 8 so that we don't lose any of our data.)
|
||
|
|
//
|
||
|
|
|
||
|
|
MyDcb.fDtrControl = DTR_CONTROL_DISABLE;
|
||
|
|
MyDcb.fRtsControl = DTR_CONTROL_DISABLE;
|
||
|
|
|
||
|
|
if (!SetCommState(
|
||
|
|
hFile,
|
||
|
|
&MyDcb
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't set the comm state\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!EscapeCommFunction(
|
||
|
|
hFile,
|
||
|
|
CLRDTR
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't clear the dtr\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!EscapeCommFunction(
|
||
|
|
hFile,
|
||
|
|
CLRRTS
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't clear the rts\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!DeviceIoControl(
|
||
|
|
hFile,
|
||
|
|
IOCTL_SERIAL_GET_DTRRTS,
|
||
|
|
NULL,
|
||
|
|
0,
|
||
|
|
&mask,
|
||
|
|
sizeof(mask),
|
||
|
|
&retSize,
|
||
|
|
NULL
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't call the iocontrol\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mask & (SERIAL_DTR_STATE | SERIAL_RTS_STATE)) {
|
||
|
|
|
||
|
|
printf("One of the bits is still set: %x\n",mask);
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!EscapeCommFunction(
|
||
|
|
hFile,
|
||
|
|
SETRTS
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't set the rts\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!DeviceIoControl(
|
||
|
|
hFile,
|
||
|
|
IOCTL_SERIAL_GET_DTRRTS,
|
||
|
|
NULL,
|
||
|
|
0,
|
||
|
|
&mask,
|
||
|
|
sizeof(mask),
|
||
|
|
&retSize,
|
||
|
|
NULL
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't call the iocontrol\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(mask & SERIAL_RTS_STATE)) {
|
||
|
|
|
||
|
|
printf("rts is not set: %x\n",mask);
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!EscapeCommFunction(
|
||
|
|
hFile,
|
||
|
|
SETDTR
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't set the DTR\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!DeviceIoControl(
|
||
|
|
hFile,
|
||
|
|
IOCTL_SERIAL_GET_DTRRTS,
|
||
|
|
NULL,
|
||
|
|
0,
|
||
|
|
&mask,
|
||
|
|
sizeof(mask),
|
||
|
|
&retSize,
|
||
|
|
NULL
|
||
|
|
)) {
|
||
|
|
|
||
|
|
printf("We couldn't call the iocontrol\n");
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!(mask & SERIAL_DTR_STATE)) {
|
||
|
|
|
||
|
|
printf("dtr is not set: %x\n",mask);
|
||
|
|
exit(1);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|