Lots of updates and refactoring.
This commit is contained in:
263
AVR Working Controller/SerialPort/SerialPort.cpp
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263
AVR Working Controller/SerialPort/SerialPort.cpp
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//
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//
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// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
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// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
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// PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER
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// REMAINS UNCHANGED.
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//
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// Email: yetiicb@hotmail.com
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//
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// Copyright (C) 2002-2003 Idael Cardoso.
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//
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//#include "Test.h"
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#include "SerialPort.h"
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#include "stdafx.h"
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#ifdef _DEBUG
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#undef THIS_FILE
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static char THIS_FILE[]=__FILE__;
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#define new DEBUG_NEW
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#endif
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//////////////////////////////////////////////////////////////////////
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// Construction/Destruction
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//////////////////////////////////////////////////////////////////////
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CSerialPort::CSerialPort()
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: m_PortHandle(INVALID_HANDLE_VALUE)
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{
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}
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CSerialPort::~CSerialPort()
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{
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Close();
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}
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BOOL CSerialPort::Open(LPCTSTR PortName, DWORD BaudRate, BYTE ByteSize, BYTE Parity, BYTE StopBits, DWORD DesiredAccess)
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{
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Close();
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m_PortHandle = CreateFile(PortName, DesiredAccess, 0, NULL, OPEN_EXISTING, 0, 0);
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DCB dcb;
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CString s;
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dcb.DCBlength = sizeof(dcb);
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GetCommState(m_PortHandle, &dcb);
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//printf("dcb: BaudRate before=%d\n", dcb.BaudRate);
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//printf("dcb: ByteSize before=%d\n", dcb.ByteSize);
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//printf("dcb: StopBits before=%d\n", dcb.StopBits);
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//printf("dcb: Parity before=%d\n", dcb.Parity);
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dcb.BaudRate = BaudRate;
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dcb.ByteSize = ByteSize;
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dcb.StopBits = StopBits;
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dcb.Parity = Parity;
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//printf("dcb: fDsrSensitivity before=%d\n", dcb.fDsrSensitivity);
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//printf("dcb: fOutxCtsFlow before=%d\n", dcb.fOutxCtsFlow);
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//printf("dcb: fOutxDsrFlow before=%d\n", dcb.fOutxDsrFlow);
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//printf("dcb: fInX before=%d\n", dcb.fInX);
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//printf("dcb: fOutX before=%d\n", dcb.fOutX);
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//printf("dcb: fDtrControl before=%d\n", dcb.fDtrControl);
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//printf("dcb: fRtsControl before=%d\n", dcb.fRtsControl);
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dcb.fDsrSensitivity = 0;
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dcb.fOutxCtsFlow = 0;
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dcb.fOutxDsrFlow = 0;
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dcb.fInX = 0;
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dcb.fOutX = 0;
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dcb.fDtrControl = DTR_CONTROL_DISABLE; //DTR and RTS 0
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dcb.fRtsControl = RTS_CONTROL_DISABLE;
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SetCommState(m_PortHandle, &dcb);
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COMMTIMEOUTS touts;
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touts.ReadIntervalTimeout = MAXDWORD; // This, plus the zero timeouts causes immediate return
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touts.ReadTotalTimeoutMultiplier = 0;
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touts.ReadTotalTimeoutConstant = 0;
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touts.WriteTotalTimeoutConstant = 1;
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touts.WriteTotalTimeoutMultiplier = 0;
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SetCommTimeouts(m_PortHandle, &touts);
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//SetCommMask (m_PortHandle, EV_CTS | EV_DSR | EV_RING | EV_RLSD);
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PurgeComm(m_PortHandle, PURGE_TXCLEAR | PURGE_RXCLEAR);
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return TRUE;
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}
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else
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{
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printf("Open COM Error: %i\n", GetLastError());
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return FALSE; // Use GetLastError() to know the reason
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}
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}
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void CSerialPort::Close()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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CloseHandle(m_PortHandle);
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m_PortHandle = INVALID_HANDLE_VALUE;
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}
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}
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BOOL CSerialPort::IsOpen()
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{
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return (m_PortHandle != INVALID_HANDLE_VALUE);
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}
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DWORD CSerialPort::Read(LPVOID Buffer, DWORD BufferSize)
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{
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DWORD Res(0);
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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ReadFile(m_PortHandle, Buffer, BufferSize, &Res, NULL);
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}
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return Res;
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}
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DWORD CSerialPort::Write(const LPVOID Buffer, DWORD BufferSize)
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{
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DWORD Res(0);
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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(void)WriteFile(m_PortHandle, Buffer, BufferSize, &Res, NULL);
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}
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return Res;
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}
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BOOL CSerialPort::Get_CD_State()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DWORD ModemStat;
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if (GetCommModemStatus(m_PortHandle, &ModemStat))
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{
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return (ModemStat & MS_RLSD_ON) > 0; //Not sure
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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return FALSE;
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}
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}
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BOOL CSerialPort::Get_CTS_State()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DWORD ModemStat;
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if (GetCommModemStatus(m_PortHandle, &ModemStat))
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{
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return (ModemStat & MS_CTS_ON) > 0;
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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return FALSE;
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}
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}
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BOOL CSerialPort::Get_DSR_State()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DWORD ModemStat;
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if (GetCommModemStatus(m_PortHandle, &ModemStat))
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{
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return (ModemStat & MS_DSR_ON) > 0;
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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return FALSE;
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}
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}
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BOOL CSerialPort::Get_RI_State()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DWORD ModemStat;
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if (GetCommModemStatus(m_PortHandle, &ModemStat))
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{
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return (ModemStat & MS_RING_ON) > 0;
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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return FALSE;
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}
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}
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void CSerialPort::Set_DTR_State(BOOL state)
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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EscapeCommFunction(m_PortHandle, (state ? SETDTR : CLRDTR));
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}
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}
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BOOL CSerialPort::Get_DTR_State()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DWORD ModemStat;
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if (GetCommModemStatus(m_PortHandle, &ModemStat))
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{
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return (ModemStat & MS_DSR_ON) > 0; //Not sure
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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return FALSE;
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}
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}
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void CSerialPort::Set_RTS_State(BOOL state)
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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if (0 == EscapeCommFunction(m_PortHandle, (state ? SETRTS : CLRRTS))) {
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printf("Set_RTS_State(%d) failed.\n", state ? 1 : 0);
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}
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}
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}
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BOOL CSerialPort::Get_RTS_State()
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{
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if (m_PortHandle != INVALID_HANDLE_VALUE)
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{
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DWORD ModemStat;
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if (GetCommModemStatus(m_PortHandle, &ModemStat))
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{
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return (ModemStat & MS_CTS_ON) > 0; //Not sure
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}
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else
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{
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return FALSE;
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}
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}
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else
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{
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return FALSE;
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}
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}
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