author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:57:15 +0200 | |
changeset 0 | a03f92240627 |
child 4 | 73ff0d268e1d |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 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: ECOM plugin for serial communication over USB port |
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* |
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*/ |
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// INCLUDE FILES |
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#include <badesca.h> |
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#include <f32file.h> |
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#include "HtiUsbSerialCommEcomPlugin.h" |
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#include <hticfg.h> |
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#include <htilogging.h> |
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// EXTERNAL DATA STRUCTURES |
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// EXTERNAL FUNCTION PROTOTYPES |
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// CONSTANTS |
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_LIT( KHtiUsbSerialError, "HtiUsbSerialError" ); |
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_LIT( KHtiOkButton, "OK" ); |
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_LIT( KHtiCfgPath, "\\" ); // root of drive |
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_LIT( KHtiUsbSerialCommCfg, "HTIUsbSerialComm.cfg" ); |
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_LIT8( KUsbPortNumber, "PortNumber" ); |
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_LIT8( KUsbDataRate, "DataRate" ); |
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// _LIT( KUsbPddName, "" ); |
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_LIT( KUsbLddName, "EUSBC" ); |
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_LIT( KUsbCsyName, "ECACM"); |
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const TInt KDefaultUsbPort = 1; |
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const static TUint KReceiveBufferLength = 4 * 1024; |
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const static TUint KSendBufferLength = 4 * 1024; |
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const static TInt KMaxHtiNotifierLength = 128; |
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// MACROS |
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// MODULE DATA STRUCTURES |
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// LOCAL FUNCTION PROTOTYPES |
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// FORWARD DECLARATIONS |
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// ============================ MEMBER FUNCTIONS =============================== |
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::NewL |
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// Two-phased constructor. |
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// ----------------------------------------------------------------------------- |
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CHtiUsbSerialCommEcomPlugin* CHtiUsbSerialCommEcomPlugin::NewL() |
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{ |
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HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::NewL" ); |
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CHtiUsbSerialCommEcomPlugin* plugin = |
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new ( ELeave ) CHtiUsbSerialCommEcomPlugin(); |
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CleanupStack::PushL( plugin ); |
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plugin->ConstructL(); |
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CleanupStack::Pop( plugin ); |
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HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::NewL" ); |
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return plugin; |
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} |
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin |
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// Destructor. |
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// ----------------------------------------------------------------------------- |
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CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin() |
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{ |
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HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin" ); |
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iCommPort.Close(); |
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iCommServ.Close(); |
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delete iCfg; |
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User::FreeLogicalDevice( KUsbLddName() ); |
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HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin" ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::CHtiUsbSerialCommEcomPlugin |
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// C++ default constructor can NOT contain any code, that might leave. |
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// ----------------------------------------------------------------------------- |
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CHtiUsbSerialCommEcomPlugin::CHtiUsbSerialCommEcomPlugin() |
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{ |
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// default port settings |
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iPortNumber = KDefaultUsbPort; |
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iDataRate = EBps115200; |
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iParity = EParityNone; |
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iDataBits = EData8; |
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iStopBits = EStop1; |
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iHandshake = 0; |
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} |
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105 |
|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::ConstructL |
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// Symbian 2nd phase constructor - can leave. |
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// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::ConstructL() |
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{ |
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TRAPD( err, LoadConfigL() ); |
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if ( err == KErrNone ) |
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{ |
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ReadConfig(); |
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} |
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InitCommServerL(); |
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InitCommPortL(); |
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} |
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120 |
|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::LoadConfigL |
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// Loads the plugin configuration file from disk to iCfg. |
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// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::LoadConfigL() |
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{ |
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HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::LoadConfigL" ); |
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iCfg = CHtiCfg::NewL(); |
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HTI_LOG_TEXT( "CHtiCfg constructed - loading cfg file" ); |
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iCfg->LoadCfgL( KHtiCfgPath, KHtiUsbSerialCommCfg ); |
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HTI_LOG_TEXT( "Cfg file loaded" ); |
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HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::LoadConfigL" ); |
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} |
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134 |
|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::ReadConfig |
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// Reads the parameters from loaded configuration file. |
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// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::ReadConfig() |
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{ |
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HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::ReadConfig" ); |
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142 |
|
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TInt portNumberCfg = 0; |
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TRAPD( paramErr, |
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portNumberCfg = iCfg->GetParameterIntL( KUsbPortNumber ) ); |
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if ( paramErr != KErrNone ) |
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{ |
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HTI_LOG_FORMAT( |
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"PortNumber not defined in cfg, using default value %d", |
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iPortNumber ); |
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portNumberCfg = iPortNumber; |
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} |
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iPortNumber = portNumberCfg; |
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154 |
|
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TInt dataRateCfg = 0; |
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TRAP( paramErr, dataRateCfg = iCfg->GetParameterIntL( KUsbDataRate ) ); |
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if ( paramErr != KErrNone ) |
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{ |
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HTI_LOG_TEXT( "DataRate not defined in cfg, using default" ); |
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} |
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else |
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162 |
{ |
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switch ( dataRateCfg ) |
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{ |
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case 2400: iDataRate = EBps2400; break; |
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case 4800: iDataRate = EBps4800; break; |
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case 9600: iDataRate = EBps9600; break; |
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case 19200: iDataRate = EBps19200; break; |
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case 38400: iDataRate = EBps38400; break; |
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case 57600: iDataRate = EBps57600; break; |
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case 115200: iDataRate = EBps115200; break; |
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case 576000: iDataRate = EBps576000; break; |
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case 1152000: iDataRate = EBps1152000; break; |
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case 4000000: iDataRate = EBps4000000; break; |
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default: |
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HTI_LOG_FORMAT( |
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"Unsupported DataRate %d defined - using default", |
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dataRateCfg ); |
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break; |
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} |
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} |
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182 |
|
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HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::ReadConfig" ); |
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} |
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185 |
|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::InitCommServerL |
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// Starts the comm server, loads comms module and device drivers. |
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// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::InitCommServerL() |
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{ |
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HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::InitCommServerL" ); |
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193 |
|
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TInt err = KErrNone; |
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195 |
|
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// start the comm server |
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err = StartC32(); |
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if ( err != KErrNone && err != KErrAlreadyExists ) |
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199 |
{ |
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ShowErrorNotifierL( _L( "Failed to start comm server" ), err ); |
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User::Leave( err ); |
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} |
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203 |
|
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// connect to RCommServ |
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err = iCommServ.Connect(); |
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if ( err != KErrNone ) |
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{ |
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208 |
ShowErrorNotifierL( _L( "Failed to connect to comm server" ), err ); |
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User::Leave( err ); |
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} |
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|
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// load comms module (CSY file) |
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err = iCommServ.LoadCommModule( KUsbCsyName() ); |
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if ( err != KErrNone ) |
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{ |
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ShowErrorNotifierL( _L( "Failed to load comms module" ), err ); |
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User::Leave( err ); |
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} |
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|
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/* USB PDD is usually a kernel extension so no need to load separately. |
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// load physical device driver |
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TInt err = User::LoadPhysicalDevice( KUsbPddName ); |
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if ( err != KErrNone && err != KErrAlreadyExists ) |
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{ |
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ShowErrorNotifierL( _L( "Failed to load USB PDD" ), err ); |
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User::Leave( err ); |
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} |
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*/ |
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|
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// load logical device driver |
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err = User::LoadLogicalDevice( KUsbLddName() ); |
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if ( err != KErrNone && err != KErrAlreadyExists ) |
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{ |
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ShowErrorNotifierL( _L( "Failed to load USB LDD" ), err ); |
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User::Leave( err ); |
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} |
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|
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HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::InitCommServerL" ); |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::InitCommPortL |
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// Checks that the comms module is valid and opens the port. |
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// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::InitCommPortL() |
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{ |
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HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::InitCommPortL" ); |
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|
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TInt err = KErrNone; |
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// check the number of loaded comms modules |
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TInt commsCount = 0; |
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err = iCommServ.NumPorts( commsCount ); |
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if ( err != KErrNone || commsCount < 1 ) |
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{ |
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if ( err != KErrNone ) |
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{ |
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ShowErrorNotifierL( _L( "Failed to get comms module count" ), err ); |
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User::Leave( err ); |
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} |
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else |
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261 |
{ |
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ShowErrorNotifierL( _L( "No comms module loaded" ), KErrNotFound ); |
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User::Leave( KErrNotFound ); |
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} |
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} |
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|
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HTI_LOG_FORMAT( "Found %d loaded comms modules", commsCount ); |
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|
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// get info about our loaded comms module |
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TSerialInfo serialInfo; |
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TBool found = EFalse; |
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for ( TInt i = 0; i < commsCount && !found; i++ ) |
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{ |
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TBuf<32> moduleName; |
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err = iCommServ.GetPortInfo( i, moduleName, serialInfo ); |
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if ( err != KErrNone ) |
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{ |
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ShowErrorNotifierL( _L( "Failed to get port info" ), err ); |
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User::Leave( err ); |
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} |
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HTI_LOG_FORMAT( "Found comms module %S", &moduleName ); |
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HTI_LOG_FORMAT( "Comms module description: %S", |
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&( serialInfo.iDescription ) ); |
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if ( moduleName.CompareF( KUsbCsyName ) == 0 ) |
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285 |
{ |
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found = ETrue; |
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HTI_LOG_FORMAT( "Lowest port num = %d", serialInfo.iLowUnit ); |
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HTI_LOG_FORMAT( "Highest port num = %d", serialInfo.iHighUnit ); |
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} |
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} |
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291 |
|
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if ( !found ) |
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293 |
{ |
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ShowErrorNotifierL( _L( "Failed to get port info" ), KErrNotFound ); |
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User::Leave( KErrNotFound ); |
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} |
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297 |
|
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// create port name |
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TBuf<KMaxPortName + 4> commPort; |
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commPort.Append( serialInfo.iName ); |
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commPort.AppendFill( ':', 2 ); |
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commPort.AppendNum( iPortNumber ); |
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HTI_LOG_FORMAT( "Opening port %S", &commPort ); |
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|
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// try to open the port |
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err = iCommPort.Open( iCommServ, commPort, ECommExclusive, ECommRoleDTE ); |
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if ( err ) |
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308 |
{ |
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HTI_LOG_FORMAT( "Failed to open port %d", err ); |
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ShowErrorNotifierL( _L( "Failed to open port" ), err ); |
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311 |
} |
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User::LeaveIfError( err ); |
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HTI_LOG_TEXT( "Port open - checking port capabilities" ); |
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314 |
|
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// check port data rate capability |
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TCommCaps portCaps; |
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iCommPort.Caps( portCaps ); |
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HTI_LOG_TEXT( "Port capabilities:" ); |
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HTI_LOG_FORMAT( " DataRate = %d", portCaps().iRate ); |
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HTI_LOG_FORMAT( " Parity = %d", portCaps().iParity ); |
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|
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HTI_LOG_FORMAT( " DataBits = %d", portCaps().iDataBits ); |
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HTI_LOG_FORMAT( " StopBits = %d", portCaps().iStopBits ); |
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HTI_LOG_FORMAT( " Handshake = %d", portCaps().iHandshake ); |
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HTI_LOG_FORMAT( " Signals = %d", portCaps().iSignals ); |
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|
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HTI_LOG_FORMAT( " Fifo = %d", portCaps().iFifo ); |
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|
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HTI_LOG_FORMAT( " SIR = %d", portCaps().iSIR ); |
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|
327 |
|
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TUint reqRateCapsBitmask = RateCapsBitmaskFromRate( iDataRate ); |
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HTI_LOG_FORMAT( "Required data rate capability bitmask %d", |
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reqRateCapsBitmask ); |
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331 |
|
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if ( reqRateCapsBitmask == 0 || |
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( reqRateCapsBitmask & portCaps().iRate ) == 0 ) |
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334 |
{ |
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ShowErrorNotifierL( _L( "Unsupported data rate configured" ), |
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KErrNotSupported ); |
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User::Leave( KErrNotSupported ); |
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} |
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HTI_LOG_TEXT( "Data rate supported - setting port configuration" ); |
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340 |
|
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// set port configuration |
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TCommConfig portSettings; |
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iCommPort.Config( portSettings ); |
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portSettings().iRate = iDataRate; |
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portSettings().iParity = iParity; |
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portSettings().iDataBits = iDataBits; |
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portSettings().iStopBits = iStopBits; |
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portSettings().iFifo = EFifoEnable; |
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portSettings().iHandshake = iHandshake; |
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350 |
|
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351 |
err = iCommPort.SetConfig( portSettings ); |
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if ( err ) |
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353 |
{ |
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354 |
HTI_LOG_FORMAT( "Failed to set port settings %d", err ); |
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355 |
ShowErrorNotifierL( _L( "Failed to set port settings" ), err ); |
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User::Leave( err ); |
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|
357 |
} |
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|
358 |
|
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359 |
iCommPort.SetReceiveBufferLength( KReceiveBufferLength ); |
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|
360 |
|
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361 |
HTI_LOG_TEXT( "Port open and configured" ); |
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362 |
HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::InitCommPortL" ); |
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363 |
} |
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|
364 |
|
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365 |
// ----------------------------------------------------------------------------- |
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366 |
// CHtiUsbSerialCommEcomPlugin::Receive |
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367 |
// Receive data from comm port. |
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368 |
// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::Receive( TDes8& aRawdataBuf, |
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370 |
TRequestStatus& aStatus ) |
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|
371 |
{ |
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372 |
HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::Receive" ); |
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373 |
HTI_LOG_FORMAT( "Buf max len: %d", aRawdataBuf.MaxLength() ); |
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374 |
iCommPort.ReadOneOrMore( aStatus, aRawdataBuf ); |
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375 |
HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::Receive" ); |
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|
376 |
} |
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|
377 |
|
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378 |
// ----------------------------------------------------------------------------- |
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379 |
// CHtiUsbSerialCommEcomPlugin::Send |
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380 |
// Write data to comm port. |
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381 |
// ----------------------------------------------------------------------------- |
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382 |
void CHtiUsbSerialCommEcomPlugin::Send( const TDesC8& aRawdataBuf, |
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383 |
TRequestStatus& aStatus ) |
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|
384 |
{ |
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385 |
HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::Send" ); |
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386 |
iCommPort.Write( aStatus, aRawdataBuf ); |
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387 |
HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::Send" ); |
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|
388 |
} |
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|
389 |
|
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390 |
// ----------------------------------------------------------------------------- |
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391 |
// CHtiUsbSerialCommEcomPlugin::CancelReceive |
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392 |
// Cancel a pending read. |
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393 |
// ----------------------------------------------------------------------------- |
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394 |
void CHtiUsbSerialCommEcomPlugin::CancelReceive() |
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|
395 |
{ |
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|
396 |
HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::CancelReceive" ); |
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397 |
iCommPort.ReadCancel(); |
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398 |
HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::CancelReceive" ); |
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|
399 |
} |
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|
400 |
|
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|
401 |
// ----------------------------------------------------------------------------- |
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402 |
// CHtiUsbSerialCommEcomPlugin::CancelSend |
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403 |
// Cancel a pending write. |
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|
404 |
// ----------------------------------------------------------------------------- |
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405 |
void CHtiUsbSerialCommEcomPlugin::CancelSend() |
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406 |
{ |
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407 |
HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::CancelSend" ); |
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408 |
iCommPort.WriteCancel(); |
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409 |
HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::CancelSend" ); |
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410 |
} |
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|
411 |
|
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412 |
// ----------------------------------------------------------------------------- |
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413 |
// CHtiUsbSerialCommEcomPlugin::GetSendBufferSize |
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// ----------------------------------------------------------------------------- |
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TInt CHtiUsbSerialCommEcomPlugin::GetSendBufferSize() |
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{ |
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return KSendBufferLength; |
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} |
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|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::GetReceiveBufferSize |
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// ----------------------------------------------------------------------------- |
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TInt CHtiUsbSerialCommEcomPlugin::GetReceiveBufferSize() |
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{ |
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return KReceiveBufferLength; |
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} |
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427 |
|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::RateCapsBitmaskFromRate |
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// Converts a TBps enumeration value to a corresponding bitmask. |
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// ----------------------------------------------------------------------------- |
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TUint CHtiUsbSerialCommEcomPlugin::RateCapsBitmaskFromRate( TBps aDataRate ) |
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433 |
{ |
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switch ( aDataRate ) |
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435 |
{ |
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case EBps50: return KCapsBps50; |
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case EBps75: return KCapsBps75; |
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case EBps110: return KCapsBps110; |
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case EBps134: return KCapsBps134; |
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case EBps150: return KCapsBps150; |
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case EBps300: return KCapsBps300; |
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case EBps600: return KCapsBps600; |
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case EBps1200: return KCapsBps1200; |
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case EBps1800: return KCapsBps1800; |
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case EBps2000: return KCapsBps2000; |
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case EBps2400: return KCapsBps2400; |
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case EBps3600: return KCapsBps3600; |
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case EBps4800: return KCapsBps4800; |
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case EBps7200: return KCapsBps7200; |
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case EBps9600: return KCapsBps9600; |
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case EBps19200: return KCapsBps19200; |
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case EBps38400: return KCapsBps38400; |
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case EBps57600: return KCapsBps57600; |
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case EBps115200: return KCapsBps115200; |
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case EBps230400: return KCapsBps230400; |
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case EBps460800: return KCapsBps460800; |
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case EBps576000: return KCapsBps576000; |
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case EBps1152000: return KCapsBps1152000; |
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case EBps4000000: return KCapsBps4000000; |
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default: return 0; |
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} |
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} |
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463 |
|
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// ----------------------------------------------------------------------------- |
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// CHtiUsbSerialCommEcomPlugin::ShowErrorNotifierL |
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// Shows an error notifier dialog with text and error code. |
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// ----------------------------------------------------------------------------- |
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void CHtiUsbSerialCommEcomPlugin::ShowErrorNotifierL( const TDesC& aText, |
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TInt aErr ) |
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470 |
{ |
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RNotifier notifier; |
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User::LeaveIfError( notifier.Connect() ); |
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473 |
|
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TBuf<KMaxHtiNotifierLength> errorMsg; |
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// aText is cut if it's too long - leaving some space also for error code |
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errorMsg.Append( aText.Left( errorMsg.MaxLength() - 10 ) ); |
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errorMsg.Append( _L("\n") ); |
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errorMsg.AppendNum( aErr ); |
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479 |
|
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TRequestStatus status; |
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TInt button; |
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notifier.Notify( KHtiUsbSerialError, errorMsg, |
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KHtiOkButton, KNullDesC, button, status ); |
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User::WaitForRequest( status ); |
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notifier.Close(); |
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486 |
} |
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487 |
|
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|
488 |
|
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489 |
// End of file |