summaryrefslogtreecommitdiff
path: root/wpd/WpdBasicHardwareDriver/RS232Connection.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'wpd/WpdBasicHardwareDriver/RS232Connection.cpp')
-rw-r--r--wpd/WpdBasicHardwareDriver/RS232Connection.cpp316
1 files changed, 0 insertions, 316 deletions
diff --git a/wpd/WpdBasicHardwareDriver/RS232Connection.cpp b/wpd/WpdBasicHardwareDriver/RS232Connection.cpp
deleted file mode 100644
index eab5479b..00000000
--- a/wpd/WpdBasicHardwareDriver/RS232Connection.cpp
+++ /dev/null
@@ -1,316 +0,0 @@
-#include "stdafx.h"
-
-#include "RS232Connection.tmh"
-
-/*-----------------------------------------------------------------------------
-
-FUNCTION: RS232Connection()
-
-PURPOSE: Constructor. Initializes TTY structure
-
-COMMENTS: This structure is a collection of TTY attributes
- used by all parts of this program
-
-HISTORY: Date: Author: Comment:
- 10/27/95 AllenD Wrote it
- 2/14/96 AllenD Removed npTTYInfo
- 12/06/06 DonnMo Changed return value type
- 12/06/06 DonnMo Replaced macro calls with member-variable settings
- 12/06/06 DonnMo Removed initialization of font-related variables
-
------------------------------------------------------------------------------*/
-RS232Connection::RS232Connection()
-{
- //
- // initialize generial TTY info
- //
- m_hCommPort = NULL;
- m_fConnected = FALSE;
- m_fLocalEcho = FALSE;
- m_bPort = 1;
- m_dwBaudRate = CBR_9600;
- m_bByteSize = 8;
- m_bParity = NOPARITY;
- m_bStopBits = ONESTOPBIT;
- m_fAutowrap = TRUE;
- m_fNewLine = FALSE;
- m_fDisplayErrors = TRUE;
-
- //
- // timeouts
- //
-
- //
- // TimeoutsDefault
- // We need ReadIntervalTimeout here to cause the read operations
- // that we do to actually timeout and become overlapped.
- // Specifying 1 here causes ReadFile to return very quickly
- // so that our reader thread will continue execution.
- //
-
- m_TimeoutsDefault = { 25, 0, 0, 0, 0 };
- m_timeoutsnew = m_TimeoutsDefault;
-
- //
- // read state and status events
- //
- m_dwReceiveState = RECEIVE_TTY;
- m_dwEventFlags = EVENTFLAGS_DEFAULT;
- m_chFlag = FLAGCHAR_DEFAULT;
-
- //
- // Flow Control Settings
- //
- m_fDtrControl = DTR_CONTROL_ENABLE;
- m_fRtsControl = RTS_CONTROL_ENABLE;
- m_chXON = ASCII_XON;
- m_chXOFF = ASCII_XOFF;
- m_wXONLimit = 0;
- m_wXOFFLimit = 0;
- m_fCTSOutFlow = FALSE;
- m_fDSROutFlow = FALSE;
- m_fDSRInFlow = FALSE;
- m_fXonXoffOutFlow = FALSE;
- m_fXonXoffInFlow = FALSE;
- m_fTXafterXoffSent = FALSE;
- m_fNoReading = FALSE;
- m_fNoWriting = FALSE;
- m_fNoEvents = FALSE;
- m_fNoStatus = FALSE;
- m_fDisplayTimeouts = FALSE;
-
-}
-
-
-/*-----------------------------------------------------------------------------
-
-FUNCTION: SetPortState( void )
-
-PURPOSE: Sets port state based on settings from the user
-
-COMMENTS: Sets up DCB structure and calls SetCommState.
- Sets up new timeouts by calling SetCommTimeouts.
-
-HISTORY: Date: Author: Comment:
- 1/9/96 AllenD Wrote it
- 12/06/06 DonnMo Replaced calls to ErrorReporter() with CHECK_HR()
-
------------------------------------------------------------------------------*/
-HRESULT RS232Connection::SetPortState()
-{
- HRESULT hr = S_OK;
- DCB dcb = {0};
- DWORD dwLastError = 0;
-
- dcb.DCBlength = sizeof(dcb);
-
- //
- // get current DCB settings
- //
- if (!GetCommState(m_hCommPort, &dcb))
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "GetCommState() failed within SetPortState().");
- return hr;
- }
-
- //
- // update DCB rate, byte size, parity, and stop bits size
- //
- dcb.BaudRate = m_dwBaudRate;
- dcb.ByteSize = m_bByteSize;
- dcb.Parity = m_bParity;
- dcb.StopBits = m_bStopBits;
-
- //
- // update event flags
- //
- if (m_dwEventFlags & EV_RXFLAG)
- {
- dcb.EvtChar = m_chFlag;
- }
- else
- {
- dcb.EvtChar = '\0';
- }
-
- dcb.EofChar = '\n';
-
- //
- // update flow control settings
- //
- dcb.fDtrControl = m_fDtrControl;
- dcb.fRtsControl = m_fRtsControl;
-
- dcb.fOutxCtsFlow = m_fCTSOutFlow;
- dcb.fOutxDsrFlow = m_fDSROutFlow;
- dcb.fDsrSensitivity = m_fDSRInFlow;
- dcb.fOutX = m_fXonXoffOutFlow;
- dcb.fInX = m_fXonXoffInFlow;
- dcb.fTXContinueOnXoff = m_fTXafterXoffSent;
- dcb.XonChar = m_chXON;
- dcb.XoffChar = m_chXOFF;
- dcb.XonLim = m_wXONLimit;
- dcb.XoffLim = m_wXOFFLimit;
-
- //
- // DCB settings not in the user's control
- //
- dcb.fParity = TRUE;
-
- //
- // set new state
- //
- if (!SetCommState(m_hCommPort, &dcb))
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "SetCommState() failed within SetPortState() when setting the new state.");
- return hr;
- }
-
-
- //
- // set new timeouts
- //
- if (!SetCommTimeouts(m_hCommPort, &m_timeoutsnew))
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "SetCommTimeouts() failed within SetPortState() when setting the new timeouts.");
- return hr;
- }
-
- return hr;
-}
-
-
-/*-----------------------------------------------------------------------------
-
-FUNCTION: Connect( void )
-
-PURPOSE: Setup Communication Port with our settings
-
-RETURN:
- S_OK and handle of com port if successful
-
------------------------------------------------------------------------------*/
-HRESULT RS232Connection::Connect(_In_ LPCWSTR wszPortName, _Out_ HANDLE *phCommPort)
-{
- HRESULT hr = S_OK;
- DWORD dwLastError = 0;
-
- if (phCommPort == NULL)
- {
- hr = E_POINTER;
- CHECK_HR(hr, "A NULL phCommPort parameter was received");
- return hr;
- }
-
- *phCommPort = NULL;
-
- //
- // retrieve a handle for the com port
- // and configure the port for asynchronous
- // communications.
- //
- m_hCommPort = CreateFileW(wszPortName,
- GENERIC_READ | GENERIC_WRITE,
- 0,
- 0,
- OPEN_EXISTING,
- FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED,
- 0);
-
- if (m_hCommPort == NULL)
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "CreateFileW() failed in RS232Connection::Connect");
- return hr;
- }
-
- //
- // Save original comm timeouts and set new ones
- //
- if (!GetCommTimeouts( m_hCommPort, &(m_timeoutsorig)))
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "GetCommTimeouts() failed within RS232Connection::Connect");
- return hr;
- }
-
- //
- // Set port state
- //
- hr = SetPortState();
- if (FAILED(hr))
- {
- CHECK_HR(hr, "SetPortState() failed within RS232Connection::Connect");
- return hr;
- }
-
- //
- // set comm buffer sizes
- //
- if (!SetupComm(m_hCommPort, MAX_READ_BUFFER, MAX_WRITE_BUFFER))
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "SetupComm(SETDTR) failed within RS232Connection::Connect");
- return hr;
- }
-
- //
- // raise DTR
- //
- if (!EscapeCommFunction(m_hCommPort, SETDTR))
- {
- dwLastError = GetLastError();
- hr = HRESULT_FROM_WIN32(dwLastError);
- CHECK_HR(hr, "EscapeCommFunction() failed within RS232Connection::Connect");
- return hr;
- }
-
- //
- // set overall connect flag
- //
- m_fConnected = TRUE;
-
- //
- // set the return value
- //
- *phCommPort = m_hCommPort;
-
-
- if (SUCCEEDED(hr))
- {
- TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_FLAG_DEVICE, "%!FUNC! handle: %p", m_hCommPort);
- }
-
- return hr;
-}
-
-
-/*-----------------------------------------------------------------------------
-
-FUNCTION: Disconnect( void )
-
-PURPOSE: Tears down the Communication Port
-
-RETURN: nothing
-
------------------------------------------------------------------------------*/
-void RS232Connection::Disconnect()
-{
- if (m_hCommPort != NULL)
- {
- TraceEvents(TRACE_LEVEL_INFORMATION, TRACE_FLAG_DEVICE, "%!FUNC! handle: %p", m_hCommPort);
-
- CloseHandle(m_hCommPort);
- m_hCommPort = NULL;
-
- }
-} \ No newline at end of file
generated by cgit v1.3.1 (git 2.54.0) at 2026-08-16 23:39:45 +0000