author | Pat Downey <patd@symbian.org> |
Wed, 01 Sep 2010 12:35:48 +0100 | |
branch | RCL_3 |
changeset 26 | b564fb5fd78b |
parent 0 | dfb7c4ff071f |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of "Eclipse Public License v1.0" |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// SerialConnection.cpp: implementation of the CSerialConnection class. |
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// This class opens a virtual comm port to perform read/write operation between PC and hardware |
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// through USB cable. |
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// This application is used to receive data from the H4 board.An USB driver should be installed on the PC |
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// which maps the USB port to the virtual com port. |
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// The data received from the hardware is displayed to debug output window. |
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// |
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// |
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|
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/** |
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@file |
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@internalComponent. |
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*/ |
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|
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#include "stdafx.h" |
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#include "SerialPort.h" |
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#include "SerialConnection.h" |
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#include "SerialPortDlg.h" |
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|
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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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//set the baud rate |
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#define BAUD_RATE 115200 |
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//set the buffer size to receive data |
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#define BUFFER_SIZE 64 |
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|
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// |
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// Construction/Destruction |
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// |
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static HANDLE hPort; |
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CSerialConnection::CSerialConnection() |
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{ |
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} |
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CSerialConnection::~CSerialConnection() //destructor |
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{ |
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if( CloseHandle(hPort)>0 ) |
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OutputDebugString ("Com port is closed successfully"); |
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} |
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BOOL CSerialConnection::PortInitialize(CString strPort) |
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{ |
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|
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DCB PortDCB; |
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COMMTIMEOUTS CommTimeouts; |
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|
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//open the serial port. |
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hPort = CreateFile ( strPort, |
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GENERIC_READ | GENERIC_WRITE, |
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0, |
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NULL, |
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OPEN_EXISTING, |
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FILE_ATTRIBUTE_NORMAL, |
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NULL); |
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|
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// If it fails to open the port, return FALSE. |
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if ( hPort == INVALID_HANDLE_VALUE ) |
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{ |
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AfxMessageBox("Unable to open port"); |
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return FALSE; |
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} |
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|
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PortDCB.DCBlength = sizeof (DCB); |
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|
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//Get the default port setting information. |
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if (!GetCommState (hPort, &PortDCB)) |
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{ |
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AfxMessageBox("Unable to retrieve default port setting information"); |
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return FALSE; |
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} |
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|
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//Change the DCB structure settings. |
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|
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PortDCB.BaudRate = BAUD_RATE; // Current baud |
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PortDCB.fBinary = FALSE; // Binary mode; no EOF check |
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PortDCB.fParity = FALSE; // Enable parity checking. |
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PortDCB.fOutxCtsFlow = FALSE; // No CTS output flow control |
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PortDCB.fOutxDsrFlow = FALSE; // No DSR output flow control |
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PortDCB.fDtrControl = DTR_CONTROL_ENABLE; |
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// DTR flow control type |
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PortDCB.fDsrSensitivity = FALSE; // DSR sensitivity |
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PortDCB.fTXContinueOnXoff = TRUE; // XOFF continues Tx |
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PortDCB.fOutX = FALSE; // No XON/XOFF out flow control |
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PortDCB.fInX = FALSE; // No XON/XOFF in flow control |
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PortDCB.fErrorChar = FALSE; // Disable error replacement. |
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PortDCB.fNull = FALSE; // Disable null stripping. |
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PortDCB.fRtsControl = RTS_CONTROL_ENABLE; |
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// RTS flow control |
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|
104 |
PortDCB.fAbortOnError = FALSE; // Do not abort reads/writes on |
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|
105 |
// error. |
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|
106 |
PortDCB.ByteSize = 8; // Number of bits/bytes, 4-8 |
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|
107 |
PortDCB.Parity = NOPARITY; // 0-4=no,odd,even,mark,space |
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|
108 |
PortDCB.StopBits = ONESTOPBIT; // 0,1,2 = 1, 1.5, 2 |
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Revision: 200951
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|
109 |
|
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|
110 |
// Configure the port according to the specifications of the DCB |
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111 |
// structure. |
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|
112 |
|
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113 |
if (!SetCommState (hPort, &PortDCB)) |
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114 |
{ |
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115 |
// could not create the read thread. |
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Revision: 200951
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116 |
AfxMessageBox("Unable to configure the serial port"); |
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Revision: 200951
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117 |
return FALSE; |
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118 |
} |
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|
119 |
|
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120 |
// retrieve the time-out parameters for all read and write operations |
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121 |
// on the port. |
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122 |
if (!GetCommTimeouts (hPort, &CommTimeouts)) |
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123 |
{ |
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124 |
AfxMessageBox("Unable to retrieve the time-out parameters"); |
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Revision: 200951
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125 |
return FALSE; |
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126 |
} |
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127 |
|
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128 |
// Change the COMMTIMEOUTS structure settings. |
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Revision: 200951
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129 |
CommTimeouts.ReadIntervalTimeout = MAXDWORD; |
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Revision: 200951
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130 |
CommTimeouts.ReadTotalTimeoutMultiplier = 0; |
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Revision: 200951
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131 |
CommTimeouts.ReadTotalTimeoutConstant = 0; |
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132 |
CommTimeouts.WriteTotalTimeoutMultiplier = 10; |
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Revision: 200951
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|
133 |
CommTimeouts.WriteTotalTimeoutConstant = 1000; |
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Revision: 200951
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|
134 |
|
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Revision: 200951
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135 |
// Set the time-out parameters for all read and write operations |
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Revision: 200951
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136 |
// on the port. |
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Revision: 200951
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137 |
if (!SetCommTimeouts (hPort, &CommTimeouts)) |
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Revision: 200951
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138 |
{ |
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Revision: 200951
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139 |
AfxMessageBox("Unable to set the time-out parameters"); |
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Revision: 200951
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|
140 |
return FALSE; |
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Revision: 200951
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parents:
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141 |
} |
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Revision: 200951
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|
142 |
|
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Revision: 200951
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|
143 |
LPVOID pPARAM=NULL; |
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Revision: 200951
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|
144 |
AfxBeginThread(PortReadThread,pPARAM); |
dfb7c4ff071f
Revision: 200951
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|
145 |
|
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Revision: 200951
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|
146 |
return TRUE; |
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Revision: 200951
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|
147 |
} |
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Revision: 200951
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|
148 |
|
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Revision: 200951
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|
149 |
UINT CSerialConnection::PortReadThread(LPVOID lpvoid) |
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Revision: 200951
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150 |
{ |
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151 |
int loopSize = 0; |
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|
152 |
|
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153 |
BYTE readByte[BUFFER_SIZE]; |
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154 |
BYTE writeByte = 255; |
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Revision: 200951
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|
155 |
|
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Revision: 200951
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|
156 |
DWORD dwCommModemStatus; |
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|
157 |
DWORD dwBytesTransferred; |
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Revision: 200951
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|
158 |
DWORD dwNumBytesWritten; |
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|
159 |
|
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Revision: 200951
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|
160 |
CString str_LoopSize; |
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Revision: 200951
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|
161 |
|
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Revision: 200951
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|
162 |
if (hPort != INVALID_HANDLE_VALUE) |
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Revision: 200951
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|
163 |
{ |
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Revision: 200951
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|
164 |
/* |
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Revision: 200951
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|
165 |
send some data to the harware.This is used for handshaking with the hardware. |
dfb7c4ff071f
Revision: 200951
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parents:
diff
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|
166 |
The USB Test code running on hardware will be on wait state until it receives any |
dfb7c4ff071f
Revision: 200951
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parents:
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|
167 |
data from the PC |
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Revision: 200951
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|
168 |
*/ |
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Revision: 200951
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|
169 |
|
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Revision: 200951
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|
170 |
WriteFile (hPort, &writeByte,1,&dwNumBytesWritten,NULL); |
dfb7c4ff071f
Revision: 200951
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|
171 |
//when a character appears it unblocks waitcommevent |
dfb7c4ff071f
Revision: 200951
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|
172 |
SetCommMask (hPort,EV_RXCHAR); |
dfb7c4ff071f
Revision: 200951
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|
173 |
//waits until a character appears at port |
dfb7c4ff071f
Revision: 200951
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|
174 |
WaitCommEvent (hPort, &dwCommModemStatus, 0); |
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Revision: 200951
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|
175 |
|
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Revision: 200951
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|
176 |
while(1) |
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Revision: 200951
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|
177 |
{ |
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Revision: 200951
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|
178 |
if (EV_RXCHAR) |
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Revision: 200951
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|
179 |
{ |
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Revision: 200951
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|
180 |
SetCommMask (hPort, EV_RXCHAR ); |
dfb7c4ff071f
Revision: 200951
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|
181 |
//read data send from the hardware |
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Revision: 200951
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|
182 |
ReadFile (hPort, &readByte, BUFFER_SIZE, &dwBytesTransferred, 0); |
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Revision: 200951
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|
183 |
|
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Revision: 200951
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|
184 |
if (dwBytesTransferred >= 1) |
dfb7c4ff071f
Revision: 200951
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|
185 |
{ |
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Revision: 200951
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|
186 |
CString str_PortData((LPCSTR)&readByte,sizeof(readByte)); |
dfb7c4ff071f
Revision: 200951
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|
187 |
str_LoopSize.Format("%d",loopSize); |
dfb7c4ff071f
Revision: 200951
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parents:
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|
188 |
loopSize++; |
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Revision: 200951
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|
189 |
//output the data to debug output window |
dfb7c4ff071f
Revision: 200951
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|
190 |
OutputDebugString (str_LoopSize + "Data send by USB = "+ str_PortData + "\n"); |
dfb7c4ff071f
Revision: 200951
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parents:
diff
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|
191 |
} |
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Revision: 200951
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diff
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|
192 |
} |
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Revision: 200951
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|
193 |
} |
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Revision: 200951
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|
194 |
} |
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Revision: 200951
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|
195 |
|
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Revision: 200951
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|
196 |
return 0; |
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Revision: 200951
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|
197 |
} |
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Revision: 200951
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diff
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|
198 |
|
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Revision: 200951
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parents:
diff
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|
199 |
|
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Revision: 200951
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diff
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|
200 |
|
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Revision: 200951
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parents:
diff
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|
201 |
|
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Revision: 200951
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parents:
diff
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|
202 |
|
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Revision: 200951
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parents:
diff
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|
203 |
|
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Revision: 200951
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diff
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|
204 |
|
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Revision: 200951
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diff
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|
205 |
|
dfb7c4ff071f
Revision: 200951
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parents:
diff
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|
206 |
|
dfb7c4ff071f
Revision: 200951
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parents:
diff
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|
207 |