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1 // Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // Comms reader and writer mixin |
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15 // |
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16 // |
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17 |
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18 #include "ATSTD.H" |
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19 #include "SCOMM.H" |
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20 |
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21 MComm::MComm() |
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22 { |
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23 iCommReader = NULL; |
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24 iCommWriter = NULL; |
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25 } |
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26 |
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27 MComm::~MComm() |
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28 { |
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29 delete iCommReader; |
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30 delete iCommWriter; |
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31 iCommPort.Close(); |
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32 iCommServer.Close(); |
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33 } |
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34 |
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35 TInt MComm::CommOpen(const TDesC& aDll, const TDesC& aName, TCommAccess aMode) |
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36 { |
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37 TInt err; |
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38 if (err = iCommServer.Connect(), err!=KErrNone) |
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39 return err; |
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40 if (aDll.Length()>0) |
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41 { |
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42 if (err = iCommServer.LoadCommModule(aDll), err!=KErrNone) |
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43 { |
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44 iCommServer.Close(); |
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45 return err; |
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46 } |
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47 } |
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48 if (err = iCommPort.Open(iCommServer, aName, ECommExclusive), err!=KErrNone) |
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49 // if any other TSY (or other app) is using comm port, we want to return gracefully |
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50 // with error |
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51 { |
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52 iCommServer.Close(); |
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53 return err; |
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54 } |
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55 if (aMode==ECommShared) |
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56 { |
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57 iCommPort.Close(); |
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58 if (err = iCommPort.Open(iCommServer, aName, aMode), err!=KErrNone) |
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59 { |
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60 iCommServer.Close(); |
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61 return err; |
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62 } |
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63 } |
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64 return KErrNone; |
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65 } |
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66 |
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67 TInt MComm::CommOpen(const TDesC& aName, TCommAccess aMode) |
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68 { |
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69 TInt err; |
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70 if (err = iCommServer.Connect(), err!=KErrNone) |
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71 return err; |
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72 if (err = iCommPort.Open(iCommServer, aName, ECommExclusive), err!=KErrNone) |
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73 // if any other TSY (or other app) is using comm port, we want to return gracefully |
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74 // with error |
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75 { |
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76 iCommServer.Close(); |
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77 return err; |
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78 } |
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79 if (aMode==ECommShared) |
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80 { |
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81 iCommPort.Close(); |
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82 if (err = iCommPort.Open(iCommServer, aName, aMode), err!=KErrNone) |
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83 { |
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84 iCommServer.Close(); |
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85 return err; |
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86 } |
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87 } |
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88 return KErrNone; |
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89 } |
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90 |
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91 void MComm::CommClose() |
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92 { |
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93 iCommReader->Cancel(); |
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94 iCommWriter->Cancel(); |
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95 iCommPort.Close(); |
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96 iCommServer.Close(); |
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97 } |
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98 |
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99 void MComm::CommConstructL(TInt aReadPriority, TInt aWritePriority) |
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100 { |
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101 iCommReader = new (ELeave) CCommReader(this, aReadPriority); |
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102 iCommWriter = new (ELeave) CCommWriter(this, aWritePriority); |
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103 }; |
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104 |
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105 void MComm::CommWrite(const TDesC8& aDes) |
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106 { |
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107 __ASSERT_ALWAYS(iCommWriter!=NULL, Panic(EATCommand_NotConstructed)); |
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108 iCommPort.Write(iCommWriter->StatusRef(), aDes); |
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109 iCommWriter->Activate(); |
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110 } |
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111 |
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112 void MComm::CommWriteReady() |
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113 { |
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114 __ASSERT_ALWAYS(iCommWriter!=NULL, Panic(EATCommand_NotConstructed)); |
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115 iCommPort.Write(iCommWriter->StatusRef(), TPtrC8(NULL, 0)); |
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116 iCommWriter->Activate(); |
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117 } |
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118 |
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119 void MComm::CommRead(TDes8& aDes) |
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120 { |
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121 __ASSERT_ALWAYS(iCommReader!=NULL, Panic(EATCommand_NotConstructed)); |
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122 iCommPort.Read(iCommReader->StatusRef(), aDes, aDes.Length()); |
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123 iCommReader->Activate(); |
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124 } |
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125 |
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126 void MComm::CommReadOneOrMore(TDes8& aDes) |
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127 { |
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128 __ASSERT_ALWAYS(iCommReader!=NULL, Panic(EATCommand_NotConstructed)); |
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129 iCommPort.ReadOneOrMore(iCommReader->StatusRef(), aDes); |
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130 iCommReader->Activate(); |
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131 } |
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132 |
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133 void MComm::CommReadReady() |
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134 { |
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135 __ASSERT_ALWAYS(iCommReader!=NULL, Panic(EATCommand_NotConstructed)); |
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136 // TRequestStatus aStatus; |
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137 // iCommPort.Read(aStatus,iBuf,0); |
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138 // User::WaitForRequest(aStatus); |
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139 // JoeF 26.11.99. IrComm.Csy can't handle a read into a zero-length buffer and needs fixing. The |
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140 // above lines have been removed from the TSY as a temporary workaround only, until a proper fix |
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141 // can be implemented in IrComm.Csy |
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142 } |
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143 |
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144 void MComm::CommCancel() |
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145 { |
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146 if (iCommWriter) |
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147 iCommWriter->Cancel(); |
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148 if (iCommReader) |
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149 iCommReader->Cancel(); |
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150 } |
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151 |
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152 void MComm::CommWriteCancel() |
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153 { |
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154 if (iCommWriter) |
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155 iCommWriter->Cancel(); |
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156 } |
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157 |
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158 void MComm::CommReadCancel() |
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159 { |
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160 if (iCommReader) |
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161 iCommReader->Cancel(); |
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162 } |
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163 |
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164 // |
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165 // CCommWriter |
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166 // |
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167 CCommWriter::CCommWriter(MComm* aComm, TInt aPriority) |
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168 : CActive(aPriority), iComm(aComm) |
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169 { |
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170 __DECLARE_NAME(_S("CCommWriter")); |
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171 CActiveScheduler::Add(this); |
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172 } |
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173 |
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174 CCommWriter::~CCommWriter() |
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175 { |
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176 Cancel(); |
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177 } |
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178 |
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179 void CCommWriter::RunL() |
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180 { |
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181 iComm->CommWriteComplete(iStatus.Int()); |
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182 } |
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183 |
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184 void CCommWriter::DoCancel() |
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185 { |
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186 iComm->iCommPort.WriteCancel(); |
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187 } |
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188 |
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189 // |
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190 // CCommReader |
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191 // |
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192 CCommReader::CCommReader(MComm* aComm, TInt aPriority) |
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193 : CActive(aPriority), iComm(aComm) |
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194 { |
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195 __DECLARE_NAME(_S("CCommReader")); |
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196 CActiveScheduler::Add(this); |
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197 } |
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198 |
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199 CCommReader::~CCommReader() |
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200 { |
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201 Cancel(); |
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202 } |
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203 |
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204 void CCommReader::RunL() |
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205 { |
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206 iComm->CommReadComplete(iStatus.Int()); |
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207 } |
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208 |
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209 void CCommReader::DoCancel() |
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210 { |
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211 iComm->iCommPort.ReadCancel(); |
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212 } |