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1 /* |
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2 * Copyright (c) 2006 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: |
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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 <e32cons.h> |
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20 #include <f32file.h> |
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21 |
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22 #include "TrkConnData.h" |
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23 #include "TrkXtiCommPort.h" |
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24 #include "TrkFramingLayer.h" |
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25 |
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26 _LIT(KSendErrMsg, "Failed to write to the XTI channel"); |
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27 |
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28 // |
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29 // Default comm values |
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30 // |
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31 |
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32 |
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33 // |
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34 // Static helper functions |
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35 // |
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36 |
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37 // |
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38 // |
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39 // CTrkXtiCommPort implementation |
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40 // |
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41 // |
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42 |
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43 // |
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44 // CTrkXtiCommPort constructor |
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45 // |
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46 CTrkXtiCommPort::CTrkXtiCommPort() |
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47 : CTrkCommPort(CActive::EPriorityStandard), |
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48 iConnected(EFalse), |
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49 iListening(EFalse), |
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50 iLineNumber(0), |
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51 iLddLoaded(EFalse) |
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52 { |
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53 } |
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54 |
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55 // |
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56 // CTrkXtiCommPort::ConstructL |
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57 // |
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58 void CTrkXtiCommPort::ConstructL(TTrkConnData aTrkConnData, TDes& aErrorMessage) |
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59 { |
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60 |
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61 iLDD = aTrkConnData.iLDD; |
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62 // We don't really need this |
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63 //iUnitNumber = aTrkConnData.iPortNumber; |
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64 |
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65 if (!iLDD.Size()) |
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66 { |
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67 aErrorMessage.Format(_L("LDD not specified in init file\r\n")); |
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68 User::Leave(KErrCorrupt); |
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69 } |
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70 |
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71 } |
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72 |
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73 // |
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74 // CTrkXtiCommPort destructor |
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75 // |
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76 CTrkXtiCommPort::~CTrkXtiCommPort() |
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77 { |
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78 if (iLddLoaded) |
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79 { |
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80 //cancel the read request |
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81 iXtiDriver.ReadCancel(); |
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82 iXtiDriver.Close(); |
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83 |
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84 TInt err = User::FreeLogicalDevice(iLDD); |
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85 if (KErrNone != err) |
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86 User::Panic(_L("FreeLogicalDevice failed"), err); |
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87 |
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88 iLddLoaded = EFalse; |
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89 } |
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90 |
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91 } |
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92 |
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93 // |
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94 // CTrkXtiCommPort::NewL |
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95 // |
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96 CTrkXtiCommPort* CTrkXtiCommPort::NewL(TTrkConnData aTrkConnData, TDes& aErrorMessage) |
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97 { |
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98 CTrkXtiCommPort* self = new(ELeave) CTrkXtiCommPort; |
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99 CleanupStack::PushL(self); |
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100 self->ConstructL(aTrkConnData, aErrorMessage); |
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101 CleanupStack::Pop(self); |
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102 return self; |
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103 } |
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104 |
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105 // |
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106 // CTrkXtiCommPort::OpenPortL |
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107 // |
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108 // Open the serial type communications port |
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109 // |
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110 void CTrkXtiCommPort::OpenPortL() |
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111 { |
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112 TInt error = KErrNone; |
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113 |
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114 // make sure the LDD is not already loaded |
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115 User::FreeLogicalDevice(iLDD); |
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116 |
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117 error = User::LoadLogicalDevice(iLDD); |
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118 if ((KErrAlreadyExists != error) && (KErrNone != error)) |
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119 ReportAndLeaveIfErrorL(error, _L("Failed to load xti logical device.")); |
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120 |
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121 error = iXtiDriver.Open(); |
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122 if (KErrNone != error) |
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123 ReportAndLeaveIfErrorL(error, _L("Failed to open xti logical device.")); |
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124 |
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125 iLddLoaded = ETrue; |
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126 |
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127 |
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128 _LIT(KXTIMSG, "Connection: XTI\r\nLDD: TrkXtiDriver\r\n"); |
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129 |
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130 iConnectionMessage = KXTIMSG; |
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131 } |
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132 |
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133 // |
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134 // CTrkXtiCommPort::ClosePort |
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135 // |
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136 // Close the communications port |
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137 // |
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138 void CTrkXtiCommPort::ClosePort() |
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139 { |
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140 Cancel(); |
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141 |
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142 if (iLddLoaded) |
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143 { |
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144 //cancel the read request |
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145 iXtiDriver.ReadCancel(); |
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146 iXtiDriver.Close(); |
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147 |
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148 TInt err = User::FreeLogicalDevice(iLDD); |
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149 if (KErrNone != err) |
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150 User::Panic(_L("FreeLogicalDevice failed"), err); |
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151 |
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152 iLddLoaded = EFalse; |
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153 } |
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154 |
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155 } |
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156 |
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157 // |
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158 // CTrkXtiCommPort::SendDataL |
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159 // |
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160 // Write data to the serial type port |
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161 // |
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162 void CTrkXtiCommPort::SendDataL(const TDesC8& aBuffer) |
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163 { |
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164 TInt err = iXtiDriver.Write(aBuffer); |
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165 |
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166 ReportAndLeaveIfErrorL(err, KSendErrMsg); |
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167 } |
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168 |
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169 // |
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170 // CTrkXtiCommPort::Listen |
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171 // |
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172 // Start listening for data coming into the serial type communications port |
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173 // |
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174 void CTrkXtiCommPort::Listen(CTrkFramingLayer *aFramingLayer) |
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175 { |
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176 iFramingLayer = aFramingLayer; |
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177 CActiveScheduler::Add(this); |
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178 IssueReadRequest(); |
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179 iListening = ETrue; |
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180 } |
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181 |
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182 // |
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183 // CTrkXtiCommPort::StopListening |
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184 // |
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185 // Stop listening for data coming into the serial type communications port |
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186 // |
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187 void CTrkXtiCommPort::StopListening() |
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188 { |
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189 if (iListening) |
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190 { |
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191 Cancel(); |
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192 Deque(); |
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193 } |
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194 |
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195 iListening = EFalse; |
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196 } |
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197 |
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198 // |
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199 // CTrkXtiCommPort::ReportAndLeaveIfErrorL |
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200 // |
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201 // If an error occurred, print the error information to the screen and bail out |
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202 // |
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203 void CTrkXtiCommPort::ReportAndLeaveIfErrorL(TInt aError, const TDesC& aDesc) |
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204 { |
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205 if (KErrNone != aError) |
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206 { |
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207 iErrorMessage.Format(_L("%S\r\nError Code: %d\r\n"), &aDesc, aError); |
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208 User::Leave(aError); |
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209 } |
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210 } |
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211 |
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212 |
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213 // |
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214 // CTrkXtiCommPort::IssueReadRequest |
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215 // |
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216 // Wait for data to come into the communications port |
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217 // |
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218 void CTrkXtiCommPort::IssueReadRequest() |
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219 { |
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220 iNextReadChar = 0; |
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221 iXtiDriver.ReadOneOrMore(iStatus, iReceivedChars); |
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222 SetActive(); |
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223 } |
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224 |
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225 // |
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226 // CTrkXtiCommPort::DoCancel |
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227 // |
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228 // Cancel the request for data from the communications port |
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229 // |
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230 void CTrkXtiCommPort::DoCancel() |
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231 { |
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232 iXtiDriver.ReadCancel(); |
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233 } |
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234 |
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235 // |
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236 // CTrkXtiCommPort::RunL |
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237 // |
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238 // Called when data comes into the communications port |
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239 // |
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240 void CTrkXtiCommPort::RunL() |
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241 { |
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242 // pass the data onto the framing layer |
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243 if (iStatus.Int() == KErrNone) |
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244 { |
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245 while (iNextReadChar < iReceivedChars.Length()) |
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246 iFramingLayer->HandleByte(iReceivedChars[iNextReadChar++]); |
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247 //iXtiDriver.Write(iReceivedChars); |
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248 } |
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249 // continue waiting for data |
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250 IssueReadRequest(); |
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251 } |
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252 |