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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 |
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40 // _LIT( KUsbPddName, "" ); |
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41 _LIT( KUsbLddName, "EUSBC" ); |
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42 _LIT( KUsbCsyName, "ECACM"); |
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43 |
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44 const TInt KDefaultUsbPort = 1; |
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45 |
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46 const static TUint KReceiveBufferLength = 4 * 1024; |
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47 const static TUint KSendBufferLength = 4 * 1024; |
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48 |
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49 const static TInt KMaxHtiNotifierLength = 128; |
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50 |
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51 // MACROS |
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52 |
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53 // MODULE DATA STRUCTURES |
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54 |
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55 // LOCAL FUNCTION PROTOTYPES |
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56 |
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57 // FORWARD DECLARATIONS |
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58 |
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59 // ============================ MEMBER FUNCTIONS =============================== |
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60 |
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61 // ----------------------------------------------------------------------------- |
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62 // CHtiUsbSerialCommEcomPlugin::NewL |
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63 // Two-phased constructor. |
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64 // ----------------------------------------------------------------------------- |
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65 CHtiUsbSerialCommEcomPlugin* CHtiUsbSerialCommEcomPlugin::NewL() |
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66 { |
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67 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::NewL" ); |
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68 CHtiUsbSerialCommEcomPlugin* plugin = |
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69 new ( ELeave ) CHtiUsbSerialCommEcomPlugin(); |
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70 CleanupStack::PushL( plugin ); |
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71 plugin->ConstructL(); |
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72 CleanupStack::Pop( plugin ); |
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73 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::NewL" ); |
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74 return plugin; |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin |
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79 // Destructor. |
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80 // ----------------------------------------------------------------------------- |
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81 CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin() |
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82 { |
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83 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin" ); |
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84 iCommPort.Close(); |
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85 iCommServ.Close(); |
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86 delete iCfg; |
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87 User::FreeLogicalDevice( KUsbLddName() ); |
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88 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::~CHtiUsbSerialCommEcomPlugin" ); |
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89 } |
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90 |
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91 // ----------------------------------------------------------------------------- |
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92 // CHtiUsbSerialCommEcomPlugin::CHtiUsbSerialCommEcomPlugin |
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93 // C++ default constructor can NOT contain any code, that might leave. |
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94 // ----------------------------------------------------------------------------- |
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95 CHtiUsbSerialCommEcomPlugin::CHtiUsbSerialCommEcomPlugin() |
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96 { |
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97 // default port settings |
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98 iPortNumber = KDefaultUsbPort; |
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99 iDataRate = EBps115200; |
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100 iParity = EParityNone; |
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101 iDataBits = EData8; |
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102 iStopBits = EStop1; |
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103 iHandshake = 0; |
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104 } |
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105 |
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106 // ----------------------------------------------------------------------------- |
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107 // CHtiUsbSerialCommEcomPlugin::ConstructL |
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108 // Symbian 2nd phase constructor - can leave. |
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109 // ----------------------------------------------------------------------------- |
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110 void CHtiUsbSerialCommEcomPlugin::ConstructL() |
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111 { |
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112 TRAPD( err, LoadConfigL() ); |
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113 if ( err == KErrNone ) |
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114 { |
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115 ReadConfig(); |
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116 } |
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117 InitCommServerL(); |
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118 InitCommPortL(); |
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119 } |
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120 |
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121 // ----------------------------------------------------------------------------- |
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122 // CHtiUsbSerialCommEcomPlugin::LoadConfigL |
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123 // Loads the plugin configuration file from disk to iCfg. |
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124 // ----------------------------------------------------------------------------- |
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125 void CHtiUsbSerialCommEcomPlugin::LoadConfigL() |
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126 { |
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127 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::LoadConfigL" ); |
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128 iCfg = CHtiCfg::NewL(); |
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129 HTI_LOG_TEXT( "CHtiCfg constructed - loading cfg file" ); |
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130 iCfg->LoadCfgL( KHtiCfgPath, KHtiUsbSerialCommCfg ); |
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131 HTI_LOG_TEXT( "Cfg file loaded" ); |
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132 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::LoadConfigL" ); |
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133 } |
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134 |
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135 // ----------------------------------------------------------------------------- |
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136 // CHtiUsbSerialCommEcomPlugin::ReadConfig |
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137 // Reads the parameters from loaded configuration file. |
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138 // ----------------------------------------------------------------------------- |
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139 void CHtiUsbSerialCommEcomPlugin::ReadConfig() |
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140 { |
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141 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::ReadConfig" ); |
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142 |
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143 TInt portNumberCfg = 0; |
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144 TRAPD( paramErr, |
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145 portNumberCfg = iCfg->GetParameterIntL( KUsbPortNumber ) ); |
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146 if ( paramErr != KErrNone ) |
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147 { |
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148 HTI_LOG_FORMAT( |
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149 "PortNumber not defined in cfg, using default value %d", |
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150 iPortNumber ); |
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151 portNumberCfg = iPortNumber; |
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152 } |
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153 iPortNumber = portNumberCfg; |
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154 |
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155 TInt dataRateCfg = 0; |
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156 TRAP( paramErr, dataRateCfg = iCfg->GetParameterIntL( KUsbDataRate ) ); |
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157 if ( paramErr != KErrNone ) |
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158 { |
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159 HTI_LOG_TEXT( "DataRate not defined in cfg, using default" ); |
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160 } |
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161 else |
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162 { |
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163 switch ( dataRateCfg ) |
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164 { |
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165 case 2400: iDataRate = EBps2400; break; |
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166 case 4800: iDataRate = EBps4800; break; |
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167 case 9600: iDataRate = EBps9600; break; |
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168 case 19200: iDataRate = EBps19200; break; |
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169 case 38400: iDataRate = EBps38400; break; |
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170 case 57600: iDataRate = EBps57600; break; |
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171 case 115200: iDataRate = EBps115200; break; |
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172 case 576000: iDataRate = EBps576000; break; |
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173 case 1152000: iDataRate = EBps1152000; break; |
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174 case 4000000: iDataRate = EBps4000000; break; |
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175 default: |
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176 HTI_LOG_FORMAT( |
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177 "Unsupported DataRate %d defined - using default", |
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178 dataRateCfg ); |
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179 break; |
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180 } |
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181 } |
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182 |
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183 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::ReadConfig" ); |
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184 } |
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185 |
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186 // ----------------------------------------------------------------------------- |
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187 // CHtiUsbSerialCommEcomPlugin::InitCommServerL |
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188 // Starts the comm server, loads comms module and device drivers. |
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189 // ----------------------------------------------------------------------------- |
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190 void CHtiUsbSerialCommEcomPlugin::InitCommServerL() |
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191 { |
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192 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::InitCommServerL" ); |
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193 |
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194 TInt err = KErrNone; |
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195 |
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196 // start the comm server |
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197 err = StartC32(); |
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198 if ( err != KErrNone && err != KErrAlreadyExists ) |
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199 { |
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200 ShowErrorNotifierL( _L( "Failed to start comm server" ), err ); |
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201 User::Leave( err ); |
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202 } |
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203 |
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204 // connect to RCommServ |
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205 err = iCommServ.Connect(); |
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206 if ( err != KErrNone ) |
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207 { |
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208 ShowErrorNotifierL( _L( "Failed to connect to comm server" ), err ); |
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209 User::Leave( err ); |
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210 } |
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211 |
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212 // load comms module (CSY file) |
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213 err = iCommServ.LoadCommModule( KUsbCsyName() ); |
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214 if ( err != KErrNone ) |
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215 { |
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216 ShowErrorNotifierL( _L( "Failed to load comms module" ), err ); |
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217 User::Leave( err ); |
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218 } |
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219 |
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220 /* USB PDD is usually a kernel extension so no need to load separately. |
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221 // load physical device driver |
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222 TInt err = User::LoadPhysicalDevice( KUsbPddName ); |
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223 if ( err != KErrNone && err != KErrAlreadyExists ) |
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224 { |
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225 ShowErrorNotifierL( _L( "Failed to load USB PDD" ), err ); |
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226 User::Leave( err ); |
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227 } |
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228 */ |
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229 |
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230 // load logical device driver |
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231 err = User::LoadLogicalDevice( KUsbLddName() ); |
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232 if ( err != KErrNone && err != KErrAlreadyExists ) |
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233 { |
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234 ShowErrorNotifierL( _L( "Failed to load USB LDD" ), err ); |
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235 User::Leave( err ); |
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236 } |
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237 |
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238 HTI_LOG_FUNC_OUT( "CHtiUsbSerialCommEcomPlugin::InitCommServerL" ); |
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239 } |
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240 |
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241 // ----------------------------------------------------------------------------- |
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242 // CHtiUsbSerialCommEcomPlugin::InitCommPortL |
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243 // Checks that the comms module is valid and opens the port. |
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244 // ----------------------------------------------------------------------------- |
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245 void CHtiUsbSerialCommEcomPlugin::InitCommPortL() |
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246 { |
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247 HTI_LOG_FUNC_IN( "CHtiUsbSerialCommEcomPlugin::InitCommPortL" ); |
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248 |
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249 TInt err = KErrNone; |
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250 // check the number of loaded comms modules |
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251 TInt commsCount = 0; |
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252 err = iCommServ.NumPorts( commsCount ); |
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253 if ( err != KErrNone || commsCount < 1 ) |
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254 { |
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255 if ( err != KErrNone ) |
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256 { |
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257 ShowErrorNotifierL( _L( "Failed to get comms module count" ), err ); |
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258 User::Leave( err ); |
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259 } |
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260 else |
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261 { |
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262 ShowErrorNotifierL( _L( "No comms module loaded" ), KErrNotFound ); |
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263 User::Leave( KErrNotFound ); |
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264 } |
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265 } |
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266 |
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267 HTI_LOG_FORMAT( "Found %d loaded comms modules", commsCount ); |
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268 |
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269 // get info about our loaded comms module |
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270 TSerialInfo serialInfo; |
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271 TBool found = EFalse; |
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272 for ( TInt i = 0; i < commsCount && !found; i++ ) |
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273 { |
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274 TBuf<32> moduleName; |
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275 err = iCommServ.GetPortInfo( i, moduleName, serialInfo ); |
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276 if ( err != KErrNone ) |
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277 { |
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278 ShowErrorNotifierL( _L( "Failed to get port info" ), err ); |
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279 User::Leave( err ); |
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280 } |
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281 HTI_LOG_FORMAT( "Found comms module %S", &moduleName ); |
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282 HTI_LOG_FORMAT( "Comms module description: %S", |
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283 &( serialInfo.iDescription ) ); |
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284 if ( moduleName.CompareF( KUsbCsyName ) == 0 ) |
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285 { |
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286 found = ETrue; |
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287 HTI_LOG_FORMAT( "Lowest port num = %d", serialInfo.iLowUnit ); |
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288 HTI_LOG_FORMAT( "Highest port num = %d", serialInfo.iHighUnit ); |
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289 } |
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290 } |
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291 |
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292 if ( !found ) |
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293 { |
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294 ShowErrorNotifierL( _L( "Failed to get port info" ), KErrNotFound ); |
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295 User::Leave( KErrNotFound ); |
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296 } |
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297 |
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298 // create port name |
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299 TBuf<KMaxPortName + 4> commPort; |
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300 commPort.Append( serialInfo.iName ); |
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301 commPort.AppendFill( ':', 2 ); |
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302 commPort.AppendNum( iPortNumber ); |
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303 HTI_LOG_FORMAT( "Opening port %S", &commPort ); |
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304 |
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305 // try to open the port |
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306 err = iCommPort.Open( iCommServ, commPort, ECommExclusive, ECommRoleDTE ); |
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307 if ( err ) |
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308 { |
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309 HTI_LOG_FORMAT( "Failed to open port %d", err ); |
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310 ShowErrorNotifierL( _L( "Failed to open port" ), err ); |
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311 } |
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312 User::LeaveIfError( err ); |
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313 HTI_LOG_TEXT( "Port open - checking port capabilities" ); |
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314 |
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315 // check port data rate capability |
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316 TCommCaps portCaps; |
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317 iCommPort.Caps( portCaps ); |
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318 HTI_LOG_TEXT( "Port capabilities:" ); |
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319 HTI_LOG_FORMAT( " DataRate = %d", portCaps().iRate ); |
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320 HTI_LOG_FORMAT( " Parity = %d", portCaps().iParity ); |
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321 HTI_LOG_FORMAT( " DataBits = %d", portCaps().iDataBits ); |
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322 HTI_LOG_FORMAT( " StopBits = %d", portCaps().iStopBits ); |
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323 HTI_LOG_FORMAT( " Handshake = %d", portCaps().iHandshake ); |
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324 HTI_LOG_FORMAT( " Signals = %d", portCaps().iSignals ); |
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325 HTI_LOG_FORMAT( " Fifo = %d", portCaps().iFifo ); |
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326 HTI_LOG_FORMAT( " SIR = %d", portCaps().iSIR ); |
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327 |
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328 TUint reqRateCapsBitmask = RateCapsBitmaskFromRate( iDataRate ); |
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329 HTI_LOG_FORMAT( "Required data rate capability bitmask %d", |
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330 reqRateCapsBitmask ); |
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331 |
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332 if ( reqRateCapsBitmask == 0 || |
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333 ( reqRateCapsBitmask & portCaps().iRate ) == 0 ) |
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334 { |
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335 ShowErrorNotifierL( _L( "Unsupported data rate configured" ), |
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336 KErrNotSupported ); |
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337 User::Leave( KErrNotSupported ); |
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338 } |
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339 HTI_LOG_TEXT( "Data rate supported - setting port configuration" ); |
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340 |
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341 // set port configuration |
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342 TCommConfig portSettings; |
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343 iCommPort.Config( portSettings ); |
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344 portSettings().iRate = iDataRate; |
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345 portSettings().iParity = iParity; |
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346 portSettings().iDataBits = iDataBits; |
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347 portSettings().iStopBits = iStopBits; |
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348 portSettings().iFifo = EFifoEnable; |
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349 portSettings().iHandshake = iHandshake; |
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350 |
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351 err = iCommPort.SetConfig( portSettings ); |
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352 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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356 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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369 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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414 // ----------------------------------------------------------------------------- |
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415 TInt CHtiUsbSerialCommEcomPlugin::GetSendBufferSize() |
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416 { |
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417 return KSendBufferLength; |
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418 } |
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419 |
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420 // ----------------------------------------------------------------------------- |
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421 // CHtiUsbSerialCommEcomPlugin::GetReceiveBufferSize |
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422 // ----------------------------------------------------------------------------- |
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423 TInt CHtiUsbSerialCommEcomPlugin::GetReceiveBufferSize() |
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424 { |
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425 return KReceiveBufferLength; |
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426 } |
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427 |
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428 // ----------------------------------------------------------------------------- |
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429 // CHtiUsbSerialCommEcomPlugin::RateCapsBitmaskFromRate |
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430 // Converts a TBps enumeration value to a corresponding bitmask. |
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431 // ----------------------------------------------------------------------------- |
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432 TUint CHtiUsbSerialCommEcomPlugin::RateCapsBitmaskFromRate( TBps aDataRate ) |
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433 { |
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434 switch ( aDataRate ) |
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435 { |
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436 case EBps50: return KCapsBps50; |
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437 case EBps75: return KCapsBps75; |
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438 case EBps110: return KCapsBps110; |
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439 case EBps134: return KCapsBps134; |
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440 case EBps150: return KCapsBps150; |
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441 case EBps300: return KCapsBps300; |
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442 case EBps600: return KCapsBps600; |
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443 case EBps1200: return KCapsBps1200; |
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444 case EBps1800: return KCapsBps1800; |
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445 case EBps2000: return KCapsBps2000; |
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446 case EBps2400: return KCapsBps2400; |
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447 case EBps3600: return KCapsBps3600; |
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448 case EBps4800: return KCapsBps4800; |
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449 case EBps7200: return KCapsBps7200; |
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450 case EBps9600: return KCapsBps9600; |
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451 case EBps19200: return KCapsBps19200; |
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452 case EBps38400: return KCapsBps38400; |
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453 case EBps57600: return KCapsBps57600; |
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454 case EBps115200: return KCapsBps115200; |
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455 case EBps230400: return KCapsBps230400; |
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456 case EBps460800: return KCapsBps460800; |
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457 case EBps576000: return KCapsBps576000; |
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458 case EBps1152000: return KCapsBps1152000; |
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459 case EBps4000000: return KCapsBps4000000; |
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460 default: return 0; |
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461 } |
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462 } |
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463 |
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464 // ----------------------------------------------------------------------------- |
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465 // CHtiUsbSerialCommEcomPlugin::ShowErrorNotifierL |
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466 // Shows an error notifier dialog with text and error code. |
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467 // ----------------------------------------------------------------------------- |
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468 void CHtiUsbSerialCommEcomPlugin::ShowErrorNotifierL( const TDesC& aText, |
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469 TInt aErr ) |
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470 { |
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471 RNotifier notifier; |
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472 User::LeaveIfError( notifier.Connect() ); |
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473 |
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474 TBuf<KMaxHtiNotifierLength> errorMsg; |
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475 // aText is cut if it's too long - leaving some space also for error code |
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476 errorMsg.Append( aText.Left( errorMsg.MaxLength() - 10 ) ); |
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477 errorMsg.Append( _L("\n") ); |
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478 errorMsg.AppendNum( aErr ); |
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479 |
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480 TRequestStatus status; |
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481 TInt button; |
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482 notifier.Notify( KHtiUsbSerialError, errorMsg, |
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483 KHtiOkButton, KNullDesC, button, status ); |
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484 User::WaitForRequest( status ); |
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485 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 |