143 lines
4.0 KiB
C
143 lines
4.0 KiB
C
/**
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* WinPR: Windows Portable Runtime
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* Serial Communication API
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*
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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* Copyright 2014 Hewlett-Packard Development Company, L.P.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <winpr/crt.h>
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#include <winpr/comm.h>
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#include <winpr/file.h>
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#include <winpr/synch.h>
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#include <winpr/handle.h>
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int TestCommConfig(int argc, char* argv[])
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{
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DCB dcb;
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HANDLE hComm;
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BOOL success;
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LPCSTR lpFileName = "\\\\.\\COM1";
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COMMPROP commProp;
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hComm = CreateFileA(lpFileName,
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GENERIC_READ | GENERIC_WRITE,
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0, NULL, OPEN_EXISTING, 0, NULL);
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if (hComm && (hComm != INVALID_HANDLE_VALUE))
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{
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fprintf(stderr, "CreateFileA failure: could create a handle on a not yet defined device: %s\n", lpFileName);
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return EXIT_FAILURE;
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}
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// TMP: FIXME: check if we can proceed with tests on the actual device, skip and warn otherwise but don't fail
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success = DefineCommDevice(lpFileName, "/dev/ttyS0");
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if(!success)
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{
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fprintf(stderr, "DefineCommDevice failure: %s\n", lpFileName);
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return EXIT_FAILURE;
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}
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hComm = CreateFileA(lpFileName,
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GENERIC_READ | GENERIC_WRITE,
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FILE_SHARE_WRITE, /* invalid parmaeter */
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NULL,
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CREATE_NEW, /* invalid parameter */
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0,
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(HANDLE)1234); /* invalid parmaeter */
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if (hComm != INVALID_HANDLE_VALUE)
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{
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fprintf(stderr, "CreateFileA failure: could create a handle with some invalid parameters %s\n", lpFileName);
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return EXIT_FAILURE;
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}
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hComm = CreateFileA(lpFileName,
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GENERIC_READ | GENERIC_WRITE,
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0, NULL, OPEN_EXISTING, 0, NULL);
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if (!hComm || (hComm == INVALID_HANDLE_VALUE))
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{
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fprintf(stderr, "CreateFileA failure: %s GetLastError() = 0x%0.8x\n", lpFileName, GetLastError());
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return EXIT_FAILURE;
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}
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/* TODO: a second call to CreateFileA should failed and
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* GetLastError should return ERROR_SHARING_VIOLATION */
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ZeroMemory(&dcb, sizeof(DCB));
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dcb.DCBlength = sizeof(DCB);
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success = GetCommState(hComm, &dcb);
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if (!success)
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{
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fprintf(stderr, "GetCommState failure: GetLastError() = Ox%x\n", (int) GetLastError());
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return EXIT_FAILURE;
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}
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fprintf(stderr, "BaudRate: %d ByteSize: %d Parity: %d StopBits: %d\n",
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(int) dcb.BaudRate, (int) dcb.ByteSize, (int) dcb.Parity, (int) dcb.StopBits);
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ZeroMemory(&commProp, sizeof(COMMPROP));
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if (!GetCommProperties(hComm, &commProp))
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{
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fprintf(stderr, "GetCommProperties failure: GetLastError(): 0x0.8x\n", GetLastError());
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return EXIT_FAILURE;
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}
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if ((commProp.dwSettableBaud & BAUD_57600) <= 0)
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{
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fprintf(stderr, "BAUD_57600 unsupported!\n");
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return EXIT_FAILURE;
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}
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if ((commProp.dwSettableBaud & BAUD_14400) > 0)
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{
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fprintf(stderr, "BAUD_14400 supported!\n");
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return EXIT_FAILURE;
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}
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dcb.BaudRate = CBR_57600;
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dcb.ByteSize = 8;
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dcb.Parity = NOPARITY;
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dcb.StopBits = ONESTOPBIT;
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success = SetCommState(hComm, &dcb);
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if (!success)
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{
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fprintf(stderr, "SetCommState failure: GetLastError() = 0x%x\n", (int) GetLastError());
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return EXIT_FAILURE;
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}
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success = GetCommState(hComm, &dcb);
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if (!success)
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{
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fprintf(stderr, "GetCommState failure: GetLastError() = 0x%x\n", (int) GetLastError());
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return 0;
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}
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if ((dcb.BaudRate != CBR_57600) || (dcb.ByteSize != 8) || (dcb.Parity != NOPARITY) || (dcb.StopBits != ONESTOPBIT))
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{
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fprintf(stderr, "Got an unexpeted value among: BaudRate: %d ByteSize: %d Parity: %d StopBits: %d\n",
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(int) dcb.BaudRate, (int) dcb.ByteSize, (int) dcb.Parity, (int) dcb.StopBits);
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}
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CloseHandle(hComm);
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return 0;
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}
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