#include "rs232.h"
-HANDLE hPortHandle = NULL;
+HANDLE hPortHandle = NULL;
BOOL Rs232OpenPortWin32(TCHAR* CommPort)
{
- TCHAR PortName[MAX_PATH];
- DWORD ErrorCode;
-
- // First check and make sure they don't already have the
- // OBD2 connection open. We don't want to open things twice.
- if (hPortHandle != NULL)
- {
- _tprintf(TEXT("Port handle not NULL. Must be already open. Returning FALSE...\n"));
- return FALSE;
- }
-
- _stprintf(PortName, TEXT("\\\\.\\%s"), CommPort);
-
- hPortHandle = CreateFile(PortName,
- GENERIC_READ|GENERIC_WRITE,
- 0,
- 0,
- OPEN_EXISTING,
- 0,
- 0);
-
- if (hPortHandle == INVALID_HANDLE_VALUE)
- {
- hPortHandle = NULL;
- ErrorCode = GetLastError();
-
- _tprintf(TEXT("CreateFile(\"%s\") failed. GetLastError() = %lu.\n"), PortName, ErrorCode);
-
- return FALSE;
- }
-
- return TRUE;
+ TCHAR PortName[MAX_PATH];
+ DWORD ErrorCode;
+
+ // First check and make sure they don't already have the
+ // OBD2 connection open. We don't want to open things twice.
+ if (hPortHandle != NULL)
+ {
+ _tprintf(TEXT("Port handle not NULL. Must be already open. Returning FALSE...\n"));
+ return FALSE;
+ }
+
+ _stprintf(PortName, TEXT("\\\\.\\%s"), CommPort);
+
+ hPortHandle = CreateFile(PortName,
+ GENERIC_READ|GENERIC_WRITE,
+ 0,
+ 0,
+ OPEN_EXISTING,
+ 0,
+ 0);
+
+ if (hPortHandle == INVALID_HANDLE_VALUE)
+ {
+ hPortHandle = NULL;
+ ErrorCode = GetLastError();
+
+ _tprintf(TEXT("CreateFile(\"%s\") failed. GetLastError() = %lu.\n"), PortName, ErrorCode);
+
+ return FALSE;
+ }
+
+ return TRUE;
}
BOOL Rs232ClosePortWin32(VOID)
{
- HANDLE hTempPortHandle = hPortHandle;
+ HANDLE hTempPortHandle = hPortHandle;
- hPortHandle = NULL;
+ hPortHandle = NULL;
- if (hTempPortHandle == NULL)
- {
- return FALSE;
- }
+ if (hTempPortHandle == NULL)
+ {
+ return FALSE;
+ }
- return CloseHandle(hTempPortHandle);
+ return CloseHandle(hTempPortHandle);
}
// DeviceControlString
// For further information on mode command syntax, refer to the end-user documentation for your operating system.
BOOL Rs232ConfigurePortWin32(TCHAR* DeviceControlString)
{
- DCB dcb;
- DWORD ErrorCode;
-
- /*if (!GetCommState(hPortHandle, &dcb))
- {
- ErrorCode = GetLastError();
-
- _tprintf(TEXT("GetCommState() failed. GetLastError() = %lu.\n"), ErrorCode);
-
- return FALSE;
- }
-
- dcb.BaudRate = BaudRate;
- dcb.ByteSize = DataBits;
- dcb.Parity = Parity;
- dcb.StopBits = StopBits;
- dcb.fBinary = TRUE;
- dcb.fDsrSensitivity = FALSE;
- dcb.fParity = (Parity == NOPARITY) ? FALSE : TRUE;
- dcb.fOutX = FALSE;
- dcb.fInX = FALSE;
- dcb.fNull = FALSE;
- dcb.fAbortOnError = TRUE;
- dcb.fOutxCtsFlow = FALSE;
- dcb.fOutxDsrFlow = FALSE;
- dcb.fDtrControl = DTR_CONTROL_DISABLE;
- dcb.fDsrSensitivity = FALSE;
- dcb.fRtsControl = RTS_CONTROL_DISABLE;
- dcb.fOutxCtsFlow = FALSE;
- dcb.fOutxCtsFlow = FALSE;*/
-
-
- memset(&dcb, 0, sizeof(DCB));
- dcb.DCBlength = sizeof(dcb);
- if (!BuildCommDCB(DeviceControlString, &dcb))
- {
- ErrorCode = GetLastError();
-
- _tprintf(TEXT("BuildCommDCB() failed. GetLastError() = %lu.\n"), ErrorCode);
-
- return FALSE;
- }
-
- if (!SetCommState(hPortHandle, &dcb))
- {
- ErrorCode = GetLastError();
-
- _tprintf(TEXT("SetCommState() failed. GetLastError() = %lu.\n"), ErrorCode);
-
- return FALSE;
- }
-
- // Set the timeouts
- if (!Rs232SetCommunicationTimeoutsWin32(MAXDWORD, 0, 0, 0, 0))
- {
- return FALSE;
- }
-
- return TRUE;
+ DCB dcb;
+ DWORD ErrorCode;
+
+ /*if (!GetCommState(hPortHandle, &dcb))
+ {
+ ErrorCode = GetLastError();
+
+ _tprintf(TEXT("GetCommState() failed. GetLastError() = %lu.\n"), ErrorCode);
+
+ return FALSE;
+ }
+
+ dcb.BaudRate = BaudRate;
+ dcb.ByteSize = DataBits;
+ dcb.Parity = Parity;
+ dcb.StopBits = StopBits;
+ dcb.fBinary = TRUE;
+ dcb.fDsrSensitivity = FALSE;
+ dcb.fParity = (Parity == NOPARITY) ? FALSE : TRUE;
+ dcb.fOutX = FALSE;
+ dcb.fInX = FALSE;
+ dcb.fNull = FALSE;
+ dcb.fAbortOnError = TRUE;
+ dcb.fOutxCtsFlow = FALSE;
+ dcb.fOutxDsrFlow = FALSE;
+ dcb.fDtrControl = DTR_CONTROL_DISABLE;
+ dcb.fDsrSensitivity = FALSE;
+ dcb.fRtsControl = RTS_CONTROL_DISABLE;
+ dcb.fOutxCtsFlow = FALSE;
+ dcb.fOutxCtsFlow = FALSE;*/
+
+
+ memset(&dcb, 0, sizeof(DCB));
+ dcb.DCBlength = sizeof(dcb);
+ if (!BuildCommDCB(DeviceControlString, &dcb))
+ {
+ ErrorCode = GetLastError();
+
+ _tprintf(TEXT("BuildCommDCB() failed. GetLastError() = %lu.\n"), ErrorCode);
+
+ return FALSE;
+ }
+
+ if (!SetCommState(hPortHandle, &dcb))
+ {
+ ErrorCode = GetLastError();
+
+ _tprintf(TEXT("SetCommState() failed. GetLastError() = %lu.\n"), ErrorCode);
+
+ return FALSE;
+ }
+
+ // Set the timeouts
+ if (!Rs232SetCommunicationTimeoutsWin32(MAXDWORD, 0, 0, 0, 0))
+ {
+ return FALSE;
+ }
+
+ return TRUE;
}
// Members
// If no character arrives within the time specified by ReadTotalTimeoutConstant, ReadFile times out.
BOOL Rs232SetCommunicationTimeoutsWin32(DWORD ReadIntervalTimeout, DWORD ReadTotalTimeoutMultiplier, DWORD ReadTotalTimeoutConstant, DWORD WriteTotalTimeoutMultiplier, DWORD WriteTotalTimeoutConstant)
{
- COMMTIMEOUTS ct;
- DWORD ErrorCode;
+ COMMTIMEOUTS ct;
+ DWORD ErrorCode;
- if (!GetCommTimeouts(hPortHandle, &ct))
- {
- ErrorCode = GetLastError();
+ if (!GetCommTimeouts(hPortHandle, &ct))
+ {
+ ErrorCode = GetLastError();
- _tprintf(TEXT("GetCommTimeouts() failed. GetLastError() = %lu.\n"), ErrorCode);
+ _tprintf(TEXT("GetCommTimeouts() failed. GetLastError() = %lu.\n"), ErrorCode);
- return FALSE;
- }
+ return FALSE;
+ }
- ct.ReadIntervalTimeout = ReadIntervalTimeout;
- ct.ReadTotalTimeoutConstant = ReadTotalTimeoutConstant;
- ct.ReadTotalTimeoutMultiplier = ReadTotalTimeoutMultiplier;
- ct.WriteTotalTimeoutConstant = WriteTotalTimeoutConstant;
- ct.WriteTotalTimeoutMultiplier = WriteTotalTimeoutMultiplier;
+ ct.ReadIntervalTimeout = ReadIntervalTimeout;
+ ct.ReadTotalTimeoutConstant = ReadTotalTimeoutConstant;
+ ct.ReadTotalTimeoutMultiplier = ReadTotalTimeoutMultiplier;
+ ct.WriteTotalTimeoutConstant = WriteTotalTimeoutConstant;
+ ct.WriteTotalTimeoutMultiplier = WriteTotalTimeoutMultiplier;
- if (!SetCommTimeouts(hPortHandle, &ct))
- {
- ErrorCode = GetLastError();
+ if (!SetCommTimeouts(hPortHandle, &ct))
+ {
+ ErrorCode = GetLastError();
- _tprintf(TEXT("SetCommTimeouts() failed. GetLastError() = %lu.\n"), ErrorCode);
+ _tprintf(TEXT("SetCommTimeouts() failed. GetLastError() = %lu.\n"), ErrorCode);
- return FALSE;
- }
+ return FALSE;
+ }
- return TRUE;
+ return TRUE;
}
BOOL Rs232ReadByteWin32(BYTE* DataByte)
{
- DWORD BytesRead = 0;
- DWORD ErrorCode;
+ DWORD BytesRead = 0;
+ DWORD ErrorCode;
- // If ReadFile() fails then report error
- if (!ReadFile(hPortHandle, DataByte, 1, &BytesRead, NULL))
- {
- ErrorCode = GetLastError();
+ // If ReadFile() fails then report error
+ if (!ReadFile(hPortHandle, DataByte, 1, &BytesRead, NULL))
+ {
+ ErrorCode = GetLastError();
- _tprintf(TEXT("ReadFile() failed. GetLastError() = %lu.\n"), ErrorCode);
+ _tprintf(TEXT("ReadFile() failed. GetLastError() = %lu.\n"), ErrorCode);
- return FALSE;
- }
+ return FALSE;
+ }
- // If ReadFile() succeeds, but BytesRead isn't 1
- // then a timeout occurred.
- if (BytesRead != 1)
- {
- return FALSE;
- }
+ // If ReadFile() succeeds, but BytesRead isn't 1
+ // then a timeout occurred.
+ if (BytesRead != 1)
+ {
+ return FALSE;
+ }
- return TRUE;
+ return TRUE;
}
BOOL Rs232WriteByteWin32(BYTE DataByte)
{
- DWORD BytesWritten = 0;
- BOOL Success;
- DWORD ErrorCode;
+ DWORD BytesWritten = 0;
+ BOOL Success;
+ DWORD ErrorCode;
- Success = WriteFile(hPortHandle, &DataByte, 1, &BytesWritten, NULL);
+ Success = WriteFile(hPortHandle, &DataByte, 1, &BytesWritten, NULL);
- if (!Success || BytesWritten != 1)
- {
- ErrorCode = GetLastError();
+ if (!Success || BytesWritten != 1)
+ {
+ ErrorCode = GetLastError();
- _tprintf(TEXT("WriteFile() failed. GetLastError() = %lu.\n"), ErrorCode);
+ _tprintf(TEXT("WriteFile() failed. GetLastError() = %lu.\n"), ErrorCode);
- return FALSE;
- }
+ return FALSE;
+ }
- return TRUE;
+ return TRUE;
}
projects / reactos.git / blobdiff