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/**
* WinPR: Windows Portable Runtime
* Serial Communication API
*
* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2014 Hewlett-Packard Development Company, L.P.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <sys/stat.h>
#include <winpr/crt.h>
#include <winpr/comm.h>
#include <winpr/file.h>
#include <winpr/synch.h>
#include <winpr/handle.h>
int TestCommConfig(int argc, char* argv[])
{
DCB dcb = { 0 };
HANDLE hComm;
BOOL success;
LPCSTR lpFileName = "\\\\.\\COM1";
COMMPROP commProp = { 0 };
struct stat statbuf = { 0 };
hComm = CreateFileA(lpFileName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hComm && (hComm != INVALID_HANDLE_VALUE))
{
fprintf(stderr,
"CreateFileA failure: could create a handle on a not yet defined device: %s\n",
lpFileName);
return EXIT_FAILURE;
}
if (stat("/dev/ttyS0", &statbuf) < 0)
{
fprintf(stderr, "/dev/ttyS0 not available, making the test to succeed though\n");
return EXIT_SUCCESS;
}
success = DefineCommDevice(lpFileName, "/dev/ttyS0");
if (!success)
{
fprintf(stderr, "DefineCommDevice failure: %s\n", lpFileName);
return EXIT_FAILURE;
}
hComm = CreateFileA(lpFileName, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_WRITE, /* invalid parmaeter */
NULL, CREATE_NEW, /* invalid parameter */
0, (HANDLE)1234); /* invalid parmaeter */
if (hComm != INVALID_HANDLE_VALUE)
{
fprintf(stderr,
"CreateFileA failure: could create a handle with some invalid parameters %s\n",
lpFileName);
return EXIT_FAILURE;
}
hComm = CreateFileA(lpFileName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (!hComm || (hComm == INVALID_HANDLE_VALUE))
{
fprintf(stderr, "CreateFileA failure: %s GetLastError() = 0x%08x\n", lpFileName,
GetLastError());
return EXIT_FAILURE;
}
/* TODO: a second call to CreateFileA should failed and
* GetLastError should return ERROR_SHARING_VIOLATION */
dcb.DCBlength = sizeof(DCB);
success = GetCommState(hComm, &dcb);
if (!success)
{
fprintf(stderr, "GetCommState failure: GetLastError() = Ox%x\n", GetLastError());
return EXIT_FAILURE;
}
fprintf(stderr,
"BaudRate: %" PRIu32 " ByteSize: %" PRIu8 " Parity: %" PRIu8 " StopBits: %" PRIu8 "\n",
dcb.BaudRate, dcb.ByteSize, dcb.Parity, dcb.StopBits);
if (!GetCommProperties(hComm, &commProp))
{
fprintf(stderr, "GetCommProperties failure: GetLastError(): 0x%08x\n", GetLastError());
return EXIT_FAILURE;
}
if ((commProp.dwSettableBaud & BAUD_57600) <= 0)
{
fprintf(stderr, "BAUD_57600 unsupported!\n");
return EXIT_FAILURE;
}
if ((commProp.dwSettableBaud & BAUD_14400) > 0)
{
fprintf(stderr, "BAUD_14400 supported!\n");
return EXIT_FAILURE;
}
dcb.BaudRate = CBR_57600;
dcb.ByteSize = 8;
dcb.Parity = NOPARITY;
dcb.StopBits = ONESTOPBIT;
success = SetCommState(hComm, &dcb);
if (!success)
{
fprintf(stderr, "SetCommState failure: GetLastError() = 0x%x\n", GetLastError());
return EXIT_FAILURE;
}
success = GetCommState(hComm, &dcb);
if (!success)
{
fprintf(stderr, "GetCommState failure: GetLastError() = 0x%x\n", GetLastError());
return 0;
}
if ((dcb.BaudRate != CBR_57600) || (dcb.ByteSize != 8) || (dcb.Parity != NOPARITY) ||
(dcb.StopBits != ONESTOPBIT))
{
fprintf(stderr,
"Got an unexpeted value among: BaudRate: %" PRIu32 " ByteSize: %" PRIu8
" Parity: %" PRIu8 " StopBits: %" PRIu8 "\n",
dcb.BaudRate, dcb.ByteSize, dcb.Parity, dcb.StopBits);
}
CloseHandle(hComm);
return 0;
}
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