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1 /* |
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2 * Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: ECOM plugin for serial communication over USB port |
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15 * |
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16 */ |
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17 |
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18 |
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19 // INCLUDE FILES |
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20 #include <badesca.h> |
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21 #include <f32file.h> |
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22 |
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23 #include "HtiUsbSerialCommEcomPlugin.h" |
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24 #include <HtiCfg.h> |
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25 #include <HtiLogging.h> |
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26 |
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27 // EXTERNAL DATA STRUCTURES |
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28 |
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29 // EXTERNAL FUNCTION PROTOTYPES |
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30 |
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31 // CONSTANTS |
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32 _LIT( KHtiUsbSerialError, "HtiUsbSerialError" ); |
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33 _LIT( KHtiOkButton, "OK" ); |
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34 |
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35 _LIT( KHtiCfgPath, "\\" ); // root of drive |
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36 _LIT( KHtiUsbSerialCommCfg, "HTIUsbSerialComm.cfg" ); |
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37 _LIT8( KUsbPortNumber, "PortNumber" ); |
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38 _LIT8( KUsbDataRate, "DataRate" ); |
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39 _LIT8( KUsbRetryTimes, "RetryTimes" ); |
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40 _LIT8( KUsbRetryInterval, "RetryInterval" ); |
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41 |
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42 // _LIT( KUsbPddName, "" ); |
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43 _LIT( KUsbLddName, "EUSBC" ); |
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44 _LIT( KUsbCsyName, "ECACM"); |
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45 |
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46 const TInt KDefaultUsbPort = 1; |
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47 |
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48 const static TUint KReceiveBufferLength = 4 * 1024; |
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49 const static TUint KSendBufferLength = 4 * 1024; |
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50 |
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51 const static TInt KMaxHtiNotifierLength = 128; |
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52 |
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53 // MACROS |
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54 |
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55 // MODULE DATA STRUCTURES |
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56 |
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57 // LOCAL FUNCTION PROTOTYPES |
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58 |
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59 // FORWARD DECLARATIONS |
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60 |
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61 // ============================ MEMBER FUNCTIONS =============================== |
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62 |
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63 // ----------------------------------------------------------------------------- |
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64 // CHtiUsbSerialCommEcomPlugin::NewL |
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65 // Two-phased constructor. |
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66 // ----------------------------------------------------------------------------- |
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67 CHtiUsbSerialCommEcomPlugin* CHtiUsbSerialCommEcomPlugin::NewL() |
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68 { |
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69 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::NewL" ); |
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70 CHtiUsbSerialCommEcomPlugin* plugin = |
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71 new ( ELeave ) CHtiUsbSerialCommEcomPlugin(); |
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72 CleanupStack::PushL( plugin ); |
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73 plugin->ConstructL(); |
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74 CleanupStack::Pop( plugin ); |
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75 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::NewL" ); |
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76 return plugin; |
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77 } |
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78 |
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79 // ----------------------------------------------------------------------------- |
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80 // CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin |
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81 // Destructor. |
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82 // ----------------------------------------------------------------------------- |
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83 CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin() |
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84 { |
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85 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin" ); |
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86 iCommPort.Close(); |
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87 iCommServ.Close(); |
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88 delete iCfg; |
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89 User::FreeLogicalDevice( KUsbLddName() ); |
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90 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin" ); |
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91 } |
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92 |
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93 // ----------------------------------------------------------------------------- |
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94 // CHtiUsbSerialCommEcomPlugin::CHtiUsbSerialCommEcomPlugin |
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95 // C++ default constructor can NOT contain any code, that might leave. |
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96 // ----------------------------------------------------------------------------- |
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97 CHtiUsbSerialCommEcomPlugin::CHtiUsbSerialCommEcomPlugin() |
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98 { |
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99 // default port settings |
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100 iPortNumber = KDefaultUsbPort; |
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101 iDataRate = EBps115200; |
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102 iParity = EParityNone; |
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103 iDataBits = EData8; |
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104 iStopBits = EStop1; |
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105 iHandshake = 0; |
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106 } |
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107 |
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108 // ----------------------------------------------------------------------------- |
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109 // CHtiUsbSerialCommEcomPlugin::ConstructL |
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110 // Symbian 2nd phase constructor - can leave. |
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111 // ----------------------------------------------------------------------------- |
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112 void CHtiUsbSerialCommEcomPlugin::ConstructL() |
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113 { |
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114 TRAPD( err, LoadConfigL() ); |
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115 if ( err == KErrNone ) |
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116 { |
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117 ReadConfig(); |
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118 } |
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119 InitCommServerL(); |
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120 InitCommPortL(); |
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121 } |
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122 |
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123 // ----------------------------------------------------------------------------- |
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124 // CHtiUsbSerialCommEcomPlugin::LoadConfigL |
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125 // Loads the plugin configuration file from disk to iCfg. |
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126 // ----------------------------------------------------------------------------- |
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127 void CHtiUsbSerialCommEcomPlugin::LoadConfigL() |
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128 { |
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129 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::LoadConfigL" ); |
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130 iCfg = CHtiCfg::NewL(); |
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131 HTI_LOG_TEXT( "CHtiCfg constructed - loading cfg file" ); |
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132 iCfg->LoadCfgL( KHtiCfgPath, KHtiUsbSerialCommCfg ); |
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133 HTI_LOG_TEXT( "Cfg file loaded" ); |
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134 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::LoadConfigL" ); |
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135 } |
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136 |
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137 // ----------------------------------------------------------------------------- |
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138 // CHtiUsbSerialCommEcomPlugin::ReadConfig |
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139 // Reads the parameters from loaded configuration file. |
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140 // ----------------------------------------------------------------------------- |
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141 void CHtiUsbSerialCommEcomPlugin::ReadConfig() |
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142 { |
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143 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::ReadConfig" ); |
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144 |
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145 TInt portNumberCfg = 0; |
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146 TRAPD( paramErr, |
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147 portNumberCfg = iCfg->GetParameterIntL( KUsbPortNumber ) ); |
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148 if ( paramErr != KErrNone ) |
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149 { |
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150 HTI_LOG_FORMAT( |
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151 "PortNumber not defined in cfg, using default value %d", |
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152 iPortNumber ); |
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153 portNumberCfg = iPortNumber; |
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154 } |
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155 iPortNumber = portNumberCfg; |
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156 |
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157 TInt dataRateCfg = 0; |
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158 TRAP( paramErr, dataRateCfg = iCfg->GetParameterIntL( KUsbDataRate ) ); |
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159 if ( paramErr != KErrNone ) |
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160 { |
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161 HTI_LOG_TEXT( "DataRate not defined in cfg, using default" ); |
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162 } |
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163 else |
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164 { |
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165 switch ( dataRateCfg ) |
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166 { |
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167 case 2400: iDataRate = EBps2400; break; |
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168 case 4800: iDataRate = EBps4800; break; |
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169 case 9600: iDataRate = EBps9600; break; |
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170 case 19200: iDataRate = EBps19200; break; |
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171 case 38400: iDataRate = EBps38400; break; |
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172 case 57600: iDataRate = EBps57600; break; |
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173 case 115200: iDataRate = EBps115200; break; |
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174 case 576000: iDataRate = EBps576000; break; |
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175 case 1152000: iDataRate = EBps1152000; break; |
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176 case 4000000: iDataRate = EBps4000000; break; |
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177 default: |
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178 HTI_LOG_FORMAT( |
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179 "Unsupported DataRate %d defined - using default", |
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180 dataRateCfg ); |
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181 break; |
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182 } |
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183 } |
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184 |
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185 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::ReadConfig" ); |
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186 } |
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187 |
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188 // ----------------------------------------------------------------------------- |
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189 // CHtiUsbSerialCommEcomPlugin::InitCommServerL |
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190 // Starts the comm server, loads comms module and device drivers. |
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191 // ----------------------------------------------------------------------------- |
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192 void CHtiUsbSerialCommEcomPlugin::InitCommServerL() |
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193 { |
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194 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::InitCommServerL" ); |
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195 |
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196 TInt err = KErrNone; |
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197 |
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198 // start the comm server |
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199 err = StartC32(); |
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200 if ( err != KErrNone && err != KErrAlreadyExists ) |
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201 { |
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202 ShowErrorNotifierL( _L( "Failed to start comm server" ), err ); |
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203 User::Leave( err ); |
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204 } |
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205 |
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206 // connect to RCommServ |
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207 err = iCommServ.Connect(); |
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208 if ( err != KErrNone ) |
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209 { |
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210 ShowErrorNotifierL( _L( "Failed to connect to comm server" ), err ); |
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211 User::Leave( err ); |
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212 } |
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213 |
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214 // load comms module (CSY file) |
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215 err = iCommServ.LoadCommModule( KUsbCsyName() ); |
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216 if ( err != KErrNone ) |
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217 { |
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218 ShowErrorNotifierL( _L( "Failed to load comms module" ), err ); |
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219 User::Leave( err ); |
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220 } |
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221 |
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222 /* USB PDD is usually a kernel extension so no need to load separately. |
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223 // load physical device driver |
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224 TInt err = User::LoadPhysicalDevice( KUsbPddName ); |
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225 if ( err != KErrNone && err != KErrAlreadyExists ) |
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226 { |
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227 ShowErrorNotifierL( _L( "Failed to load USB PDD" ), err ); |
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228 User::Leave( err ); |
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229 } |
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230 */ |
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231 |
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232 // load logical device driver |
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233 err = User::LoadLogicalDevice( KUsbLddName() ); |
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234 if ( err != KErrNone && err != KErrAlreadyExists ) |
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235 { |
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236 ShowErrorNotifierL( _L( "Failed to load USB LDD" ), err ); |
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237 User::Leave( err ); |
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238 } |
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239 |
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240 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::InitCommServerL" ); |
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241 } |
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242 |
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243 // ----------------------------------------------------------------------------- |
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244 // CHtiUsbSerialCommEcomPlugin::InitCommPortL |
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245 // Checks that the comms module is valid and opens the port. |
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246 // ----------------------------------------------------------------------------- |
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247 void CHtiUsbSerialCommEcomPlugin::InitCommPortL() |
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248 { |
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249 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::InitCommPortL" ); |
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250 |
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251 TInt err = KErrNone; |
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252 // check the number of loaded comms modules |
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253 TInt commsCount = 0; |
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254 err = iCommServ.NumPorts( commsCount ); |
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255 if ( err != KErrNone || commsCount < 1 ) |
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256 { |
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257 if ( err != KErrNone ) |
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258 { |
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259 ShowErrorNotifierL( _L( "Failed to get comms module count" ), err ); |
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260 User::Leave( err ); |
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261 } |
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262 else |
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263 { |
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264 ShowErrorNotifierL( _L( "No comms module loaded" ), KErrNotFound ); |
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265 User::Leave( KErrNotFound ); |
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266 } |
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267 } |
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268 |
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269 HTI_LOG_FORMAT( "Found %d loaded comms modules", commsCount ); |
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270 |
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271 // get info about our loaded comms module |
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272 TSerialInfo serialInfo; |
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273 TBool found = EFalse; |
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274 for ( TInt i = 0; i < commsCount && !found; i++ ) |
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275 { |
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276 TBuf<32> moduleName; |
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277 err = iCommServ.GetPortInfo( i, moduleName, serialInfo ); |
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278 if ( err != KErrNone ) |
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279 { |
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280 ShowErrorNotifierL( _L( "Failed to get port info" ), err ); |
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281 User::Leave( err ); |
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282 } |
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283 HTI_LOG_FORMAT( "Found comms module %S", &moduleName ); |
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284 HTI_LOG_FORMAT( "Comms module description: %S", |
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285 &( serialInfo.iDescription ) ); |
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286 if ( moduleName.CompareF( KUsbCsyName ) == 0 ) |
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287 { |
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288 found = ETrue; |
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289 HTI_LOG_FORMAT( "Lowest port num = %d", serialInfo.iLowUnit ); |
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290 HTI_LOG_FORMAT( "Highest port num = %d", serialInfo.iHighUnit ); |
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291 } |
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292 } |
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293 |
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294 if ( !found ) |
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295 { |
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296 ShowErrorNotifierL( _L( "Failed to get port info" ), KErrNotFound ); |
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297 User::Leave( KErrNotFound ); |
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298 } |
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299 |
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300 // create port name |
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301 TBuf<KMaxPortName + 4> commPort; |
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302 commPort.Append( serialInfo.iName ); |
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303 commPort.AppendFill( ':', 2 ); |
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304 commPort.AppendNum( iPortNumber ); |
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305 HTI_LOG_FORMAT( "Opening port %S", &commPort ); |
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306 |
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307 // try to open the port |
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308 err = iCommPort.Open( iCommServ, commPort, ECommExclusive, ECommRoleDTE ); |
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309 if ( err ) |
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310 { |
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311 //read retry parameters from cfg |
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312 TInt retryTimes = 10; |
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313 TRAPD( paramRetryTimesErr, |
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314 retryTimes = iCfg->GetParameterIntL( KUsbRetryTimes ) ); |
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315 if ( paramRetryTimesErr != KErrNone ) |
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316 { |
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317 HTI_LOG_TEXT( "RetryTimes is not defined in cfg, using default" ); |
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318 } |
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319 HTI_LOG_FORMAT( " RetryTimes = %d", retryTimes ); |
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320 |
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321 TInt retryInterval = 10; |
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322 TRAPD( paramRetryIntervalErr, |
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323 retryInterval = iCfg->GetParameterIntL( KUsbRetryInterval ) ); |
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324 if ( paramRetryIntervalErr != KErrNone ) |
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325 { |
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326 HTI_LOG_TEXT( "RetryInterval is not defined in cfg, using default" ); |
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327 } |
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328 HTI_LOG_FORMAT( " RetryInterval = %d(s)", retryInterval ); |
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329 |
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330 // retry to open the port |
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331 for( TInt i=0; i<retryTimes; i++ ) |
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332 { |
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333 User::After( retryInterval * 1000000 ); |
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334 err = iCommPort.Open( iCommServ, commPort, ECommExclusive, ECommRoleDTE ); |
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335 if( !err ) |
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336 { |
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337 break; |
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338 } |
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339 } |
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340 |
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341 if( err ) |
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342 { |
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343 HTI_LOG_FORMAT( "Failed to open port %d", err ); |
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344 ShowErrorNotifierL( _L( "Failed to open port" ), err ); |
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345 } |
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346 } |
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347 User::LeaveIfError( err ); |
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348 HTI_LOG_TEXT( "Port open - checking port capabilities" ); |
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349 |
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350 // check port data rate capability |
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351 TCommCaps portCaps; |
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352 iCommPort.Caps( portCaps ); |
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353 HTI_LOG_TEXT( "Port capabilities:" ); |
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354 HTI_LOG_FORMAT( " DataRate = %d", portCaps().iRate ); |
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355 HTI_LOG_FORMAT( " Parity = %d", portCaps().iParity ); |
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356 HTI_LOG_FORMAT( " DataBits = %d", portCaps().iDataBits ); |
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357 HTI_LOG_FORMAT( " StopBits = %d", portCaps().iStopBits ); |
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358 HTI_LOG_FORMAT( " Handshake = %d", portCaps().iHandshake ); |
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359 HTI_LOG_FORMAT( " Signals = %d", portCaps().iSignals ); |
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360 HTI_LOG_FORMAT( " Fifo = %d", portCaps().iFifo ); |
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361 HTI_LOG_FORMAT( " SIR = %d", portCaps().iSIR ); |
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362 |
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363 TUint reqRateCapsBitmask = RateCapsBitmaskFromRate( iDataRate ); |
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364 HTI_LOG_FORMAT( "Required data rate capability bitmask %d", |
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365 reqRateCapsBitmask ); |
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366 |
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367 if ( reqRateCapsBitmask == 0 || |
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368 ( reqRateCapsBitmask & portCaps().iRate ) == 0 ) |
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369 { |
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370 ShowErrorNotifierL( _L( "Unsupported data rate configured" ), |
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371 KErrNotSupported ); |
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372 User::Leave( KErrNotSupported ); |
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373 } |
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374 HTI_LOG_TEXT( "Data rate supported - setting port configuration" ); |
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375 |
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376 // set port configuration |
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377 TCommConfig portSettings; |
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378 iCommPort.Config( portSettings ); |
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379 portSettings().iRate = iDataRate; |
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380 portSettings().iParity = iParity; |
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381 portSettings().iDataBits = iDataBits; |
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382 portSettings().iStopBits = iStopBits; |
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383 portSettings().iFifo = EFifoEnable; |
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384 portSettings().iHandshake = iHandshake; |
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385 |
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386 err = iCommPort.SetConfig( portSettings ); |
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387 if ( err ) |
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388 { |
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389 HTI_LOG_FORMAT( "Failed to set port settings %d", err ); |
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390 ShowErrorNotifierL( _L( "Failed to set port settings" ), err ); |
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391 User::Leave( err ); |
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392 } |
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393 |
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394 iCommPort.SetReceiveBufferLength( KReceiveBufferLength ); |
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395 |
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396 HTI_LOG_TEXT( "Port open and configured" ); |
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397 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::InitCommPortL" ); |
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398 } |
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399 |
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400 // ----------------------------------------------------------------------------- |
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401 // CHtiUsbSerialCommEcomPlugin::Receive |
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402 // Receive data from comm port. |
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403 // ----------------------------------------------------------------------------- |
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404 void CHtiUsbSerialCommEcomPlugin::Receive( TDes8& aRawdataBuf, |
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405 TRequestStatus& aStatus ) |
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406 { |
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407 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::Receive" ); |
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408 HTI_LOG_FORMAT( "Buf max len: %d", aRawdataBuf.MaxLength() ); |
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409 iCommPort.ReadOneOrMore( aStatus, aRawdataBuf ); |
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410 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::Receive" ); |
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411 } |
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412 |
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413 // ----------------------------------------------------------------------------- |
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414 // CHtiUsbSerialCommEcomPlugin::Send |
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415 // Write data to comm port. |
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416 // ----------------------------------------------------------------------------- |
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417 void CHtiUsbSerialCommEcomPlugin::Send( const TDesC8& aRawdataBuf, |
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418 TRequestStatus& aStatus ) |
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419 { |
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420 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::Send" ); |
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421 iCommPort.Write( aStatus, aRawdataBuf ); |
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422 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::Send" ); |
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423 } |
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424 |
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425 // ----------------------------------------------------------------------------- |
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426 // CHtiUsbSerialCommEcomPlugin::CancelReceive |
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427 // Cancel a pending read. |
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428 // ----------------------------------------------------------------------------- |
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429 void CHtiUsbSerialCommEcomPlugin::CancelReceive() |
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430 { |
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431 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::CancelReceive" ); |
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432 iCommPort.ReadCancel(); |
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433 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::CancelReceive" ); |
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434 } |
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435 |
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436 // ----------------------------------------------------------------------------- |
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437 // CHtiUsbSerialCommEcomPlugin::CancelSend |
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438 // Cancel a pending write. |
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439 // ----------------------------------------------------------------------------- |
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440 void CHtiUsbSerialCommEcomPlugin::CancelSend() |
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441 { |
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442 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::CancelSend" ); |
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443 iCommPort.WriteCancel(); |
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444 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::CancelSend" ); |
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445 } |
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446 |
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447 // ----------------------------------------------------------------------------- |
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448 // CHtiUsbSerialCommEcomPlugin::GetSendBufferSize |
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449 // ----------------------------------------------------------------------------- |
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450 TInt CHtiUsbSerialCommEcomPlugin::GetSendBufferSize() |
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451 { |
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452 return KSendBufferLength; |
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453 } |
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454 |
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455 // ----------------------------------------------------------------------------- |
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456 // CHtiUsbSerialCommEcomPlugin::GetReceiveBufferSize |
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457 // ----------------------------------------------------------------------------- |
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458 TInt CHtiUsbSerialCommEcomPlugin::GetReceiveBufferSize() |
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459 { |
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460 return KReceiveBufferLength; |
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461 } |
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462 |
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463 // ----------------------------------------------------------------------------- |
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464 // CHtiUsbSerialCommEcomPlugin::RateCapsBitmaskFromRate |
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465 // Converts a TBps enumeration value to a corresponding bitmask. |
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466 // ----------------------------------------------------------------------------- |
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467 TUint CHtiUsbSerialCommEcomPlugin::RateCapsBitmaskFromRate( TBps aDataRate ) |
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468 { |
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469 switch ( aDataRate ) |
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470 { |
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471 case EBps50: return KCapsBps50; |
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472 case EBps75: return KCapsBps75; |
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473 case EBps110: return KCapsBps110; |
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474 case EBps134: return KCapsBps134; |
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475 case EBps150: return KCapsBps150; |
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476 case EBps300: return KCapsBps300; |
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477 case EBps600: return KCapsBps600; |
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478 case EBps1200: return KCapsBps1200; |
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479 case EBps1800: return KCapsBps1800; |
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480 case EBps2000: return KCapsBps2000; |
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481 case EBps2400: return KCapsBps2400; |
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482 case EBps3600: return KCapsBps3600; |
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483 case EBps4800: return KCapsBps4800; |
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484 case EBps7200: return KCapsBps7200; |
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485 case EBps9600: return KCapsBps9600; |
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486 case EBps19200: return KCapsBps19200; |
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487 case EBps38400: return KCapsBps38400; |
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488 case EBps57600: return KCapsBps57600; |
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489 case EBps115200: return KCapsBps115200; |
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490 case EBps230400: return KCapsBps230400; |
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491 case EBps460800: return KCapsBps460800; |
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492 case EBps576000: return KCapsBps576000; |
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493 case EBps1152000: return KCapsBps1152000; |
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494 case EBps4000000: return KCapsBps4000000; |
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495 default: return 0; |
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496 } |
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497 } |
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498 |
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499 // ----------------------------------------------------------------------------- |
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500 // CHtiUsbSerialCommEcomPlugin::ShowErrorNotifierL |
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501 // Shows an error notifier dialog with text and error code. |
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502 // ----------------------------------------------------------------------------- |
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503 void CHtiUsbSerialCommEcomPlugin::ShowErrorNotifierL( const TDesC& aText, |
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504 TInt aErr ) |
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505 { |
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506 RNotifier notifier; |
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507 User::LeaveIfError( notifier.Connect() ); |
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508 |
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509 TBuf<KMaxHtiNotifierLength> errorMsg; |
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510 // aText is cut if it's too long - leaving some space also for error code |
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511 errorMsg.Append( aText.Left( errorMsg.MaxLength() - 10 ) ); |
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512 errorMsg.Append( _L("\n") ); |
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513 errorMsg.AppendNum( aErr ); |
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514 |
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515 TRequestStatus status; |
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516 TInt button; |
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517 notifier.Notify( KHtiUsbSerialError, errorMsg, |
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518 KHtiOkButton, KNullDesC, button, status ); |
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519 User::WaitForRequest( status ); |
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520 notifier.Close(); |
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521 } |
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522 |
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523 |
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524 // End of file |