Mercurial > ecos-v2_0-branch

annotate host/tools/Utils/common/eCosSerial.cpp @ 823:19a153ac403c default tip

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* Added execute permissions to files missed in conversion from CVS
author alexs
date Thu, 08 May 2003 17:42:17 +0000
parents 6ed91473a1cd
children
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1 //####COPYRIGHTBEGIN####
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2 //
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3 // ----------------------------------------------------------------------------
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4 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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5 //
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6 // This program is part of the eCos host tools.
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7 //
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8 // This program is free software; you can redistribute it and/or modify it
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9 // under the terms of the GNU General Public License as published by the Free
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10 // Software Foundation; either version 2 of the License, or (at your option)
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11 // any later version.
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12 //
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13 // This program is distributed in the hope that it will be useful, but WITHOUT
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14 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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16 // more details.
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17 //
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18 // You should have received a copy of the GNU General Public License along with
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19 // this program; if not, write to the Free Software Foundation, Inc.,
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20 // 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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21 //
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22 // ----------------------------------------------------------------------------
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23 //
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24 //####COPYRIGHTEND####
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25 //=================================================================
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26 //
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27 // eCosSerial.cpp
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28 //
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29 // Serial test class
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30 //
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31 //=================================================================
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32 //=================================================================
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33 //#####DESCRIPTIONBEGIN####
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34 //
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35 // Author(s): sdf
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36 // Contributors: sdf
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37 // Date: 1999-04-01
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38 // Description: This class abstracts the serial port for use in the testing infrastructure
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39 // Usage:
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40 //
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41 //####DESCRIPTIONEND####
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42
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43 #include "eCosStd.h"
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44 #include "eCosSerial.h"
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45 #include "eCosThreadUtils.h"
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46 #include "eCosTrace.h"
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47
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48 CeCosSerial::CeCosSerial():
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49 m_nErr(0),
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50 m_pHandle(0),
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51 m_nDataBits(8),
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52 m_nStopBits(ONE_STOP_BIT),
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53 m_bXONXOFFFlowControl(0),
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54 m_bRTSCTSFlowControl(0),
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55 m_bDSRDTRFlowControl(0),
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56 m_bParity(false),
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57 m_nBaud(0),
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58 m_nTotalReadTimeout(10*1000),
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59 m_nTotalWriteTimeout(10*1000),
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60 m_nInterCharReadTimeout(500),
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61 m_nInterCharWriteTimeout(500),
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62 m_bBlockingReads(true)
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63 {
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64 }
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65
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66 CeCosSerial::~CeCosSerial()
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67 {
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68 Close();
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69 }
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70
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71 CeCosSerial::CeCosSerial(LPCTSTR pszPort,int nBaud):
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72 m_nErr(0),
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73 m_pHandle(0),
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74 m_nDataBits(8),
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75 m_nStopBits(ONE_STOP_BIT),
115
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76 m_bXONXOFFFlowControl(0),
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77 m_bRTSCTSFlowControl(0),
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78 m_bDSRDTRFlowControl(0),
82
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79 m_bParity(false),
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80 m_nTotalReadTimeout(10*1000),
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81 m_nTotalWriteTimeout(10*1000),
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82 m_nInterCharReadTimeout(500),
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83 m_nInterCharWriteTimeout(500),
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84 m_bBlockingReads(true)
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85 {
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86 Open(pszPort,nBaud);
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87 }
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88
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89 bool CeCosSerial::SetBlockingReads(bool b,bool bApplySettingsNow/*=true*/)
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90 {
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91 m_bBlockingReads=b;
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92 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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93 }
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94
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95 bool CeCosSerial:: SetBaud(unsigned int nBaud,bool bApplySettingsNow/*=true*/)
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96 {
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97 m_nBaud=nBaud;
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98 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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99 }
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100
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101 bool CeCosSerial:: SetParity(bool bParityOn,bool bApplySettingsNow/*=true*/)
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102 {
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103 m_bParity=bParityOn;
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104 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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105 }
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106
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107 bool CeCosSerial:: SetDataBits(int n,bool bApplySettingsNow/*=true*/)
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108 {
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109 m_nDataBits=n;
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110 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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111 }
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112
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113 bool CeCosSerial:: SetStopBits(StopBitsType n,bool bApplySettingsNow/*=true*/)
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114 {
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115 m_nStopBits=n;
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116 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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117 }
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118
115
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119 bool CeCosSerial:: SetXONXOFFFlowControl(bool b,bool bApplySettingsNow/*=true*/)
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120 {
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121 m_bXONXOFFFlowControl=b;
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122 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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123 }
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124
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125 bool CeCosSerial:: SetRTSCTSFlowControl(bool b,bool bApplySettingsNow/*=true*/)
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126 {
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127 m_bRTSCTSFlowControl=b;
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128 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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129 }
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130
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131 bool CeCosSerial:: SetDSRDTRFlowControl(bool b,bool bApplySettingsNow/*=true*/)
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132 {
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133 m_bDSRDTRFlowControl=b;
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134 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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135 }
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136
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137 bool CeCosSerial:: SetReadTimeOuts(int nTotal,int nBetweenChars,bool bApplySettingsNow/*=true*/) // mSec
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138 {
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139 m_nTotalReadTimeout=nTotal;
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140 m_nInterCharReadTimeout=nBetweenChars;
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141
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142 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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143 }
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144
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145 bool CeCosSerial:: SetWriteTimeOuts(int nTotal,int nBetweenChars,bool bApplySettingsNow/*=true*/) // mSec
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146 {
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147 m_nTotalWriteTimeout=nTotal;
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148 m_nInterCharWriteTimeout=nBetweenChars;
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149 return 0==m_pHandle || !bApplySettingsNow || ApplySettings();
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150 }
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151
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152 #ifdef _WIN32
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153 bool CeCosSerial::Open(LPCTSTR pszPort,int nBaud)
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154 {
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155 bool rc=false;
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156 m_nBaud=nBaud,
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157 m_strPort=pszPort;
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158 HANDLE hCom=::CreateFile(pszPort,GENERIC_READ|GENERIC_WRITE, 0,NULL,OPEN_EXISTING,0,NULL);
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159 SaveError();
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160 if (INVALID_HANDLE_VALUE==hCom) {
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161 ERROR(_T("Failed to open port %s - %s\n"),pszPort,(LPCTSTR)ErrString());
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162 } else {
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163 m_pHandle=(void *)hCom;
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164 if(ApplySettings()){
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165 Flush();
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166 rc=true;
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167 } else {
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168 Close();
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169 }
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170 }
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171 return rc;
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172 }
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173
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174 bool CeCosSerial::Close()
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175 {
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176 bool rc=false;
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177 if(m_pHandle){
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178 try {
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179 rc=(TRUE==CloseHandle((HANDLE)m_pHandle));
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180 }
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181 catch(...) {
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182 TRACE(_T("!!! Exception caught closing serial handle %08x\n"),m_pHandle);
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183 }
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184 m_pHandle=0;
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185 } else {
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186 rc=true;
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187 }
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188 return rc;
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189 }
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190
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191 bool CeCosSerial::ApplySettings()
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192 {
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193 bool rc=false;
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194 try {
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195 DCB dcb;
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196
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197 ZeroMemory(&dcb,sizeof dcb);
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198 dcb.DCBlength=sizeof dcb;
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199 dcb.BaudRate=m_nBaud;
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200 dcb.fBinary=true;
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201 dcb.fParity=true;
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202 dcb.Parity=(BYTE) ((m_bParity) ? EVENPARITY : NOPARITY);
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203 dcb.StopBits=(BYTE)m_nStopBits;
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204 dcb.ByteSize=(BYTE)m_nDataBits;
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205 LPCTSTR arpszStopbits[3]={_T("1"),_T("1.5"),_T("2")};
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206 TRACE(_T("Applysettings baud=%d Parity=%d stopbits=%s databits=%d\n"),
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207 dcb.BaudRate,
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208 dcb.Parity,
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209 arpszStopbits[dcb.StopBits],
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210 dcb.ByteSize);
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211
115
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diff changeset
212 if (m_bDSRDTRFlowControl) {
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213 dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
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214 dcb.fOutxDsrFlow = 1;
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215 } else {
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216 dcb.fDtrControl = DTR_CONTROL_ENABLE;
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217 dcb.fOutxDsrFlow = 0;
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218 }
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diff changeset
219
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220 if (m_bRTSCTSFlowControl) {
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221 dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
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222 dcb.fOutxCtsFlow = 1;
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223 } else {
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224 dcb.fRtsControl = RTS_CONTROL_ENABLE;
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225 dcb.fOutxCtsFlow = 0;
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226 }
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diff changeset
227
82
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228 dcb.fTXContinueOnXoff=1;
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229 dcb.XonChar=17;
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230 dcb.XoffChar=19;
115
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diff changeset
231 if (m_bXONXOFFFlowControl) {
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diff changeset
232 dcb.XonLim=512;
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233 dcb.XoffLim=512;
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234 dcb.fOutX=1;
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235 dcb.fInX=1;
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236 } else {
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diff changeset
237 dcb.XonLim=2048;
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diff changeset
238 dcb.XoffLim=512;
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239 dcb.fOutX=0;
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diff changeset
240 dcb.fInX=0;
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241 }
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diff changeset
242 dcb.fAbortOnError=1;
82
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243
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244 HANDLE hCom=(HANDLE)m_pHandle;
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245 if (!SetCommState(hCom, &dcb)) {
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246 SaveError();
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247 ERROR(_T("Failed to set comm state - port %s handle=%d err=%d\n"),(LPCTSTR)m_strPort,hCom,GetLastError());
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248 } else {
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249 COMMTIMEOUTS commtimeouts;
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250 if(m_bBlockingReads){
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251 commtimeouts.ReadIntervalTimeout=m_nInterCharReadTimeout;
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252 commtimeouts.ReadTotalTimeoutMultiplier=0;
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253 commtimeouts.ReadTotalTimeoutConstant=m_nTotalReadTimeout;
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diff changeset
254 } else {
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255 commtimeouts.ReadIntervalTimeout=MAXDWORD;
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256 commtimeouts.ReadTotalTimeoutMultiplier=0;
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257 commtimeouts.ReadTotalTimeoutConstant=0;
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258 }
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259 commtimeouts.WriteTotalTimeoutMultiplier=m_nTotalWriteTimeout;
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260 commtimeouts.WriteTotalTimeoutConstant=m_nInterCharWriteTimeout;
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261
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262 if (SetCommTimeouts(hCom, &commtimeouts)) {
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263 rc=true;
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264 } else {
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265 SaveError();
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266 ERROR(_T("Failed to set comm timeouts - port %s\n"),(LPCTSTR)m_strPort);
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267 }
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268 }
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269 }
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diff changeset
270 catch(...)
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271 {
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272 TRACE(_T("!!! Exception caught in CeCosSerial::ApplySettings!!!\n"));
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273 }
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274 return rc;
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275 }
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276
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277 bool CeCosSerial::Read (void *pBuf,unsigned int nSize,unsigned int &nRead)
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278 {
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279 bool rc=(TRUE==ReadFile((HANDLE)m_pHandle,pBuf,nSize,(LPDWORD)&nRead,0));
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280 SaveError();
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281 return rc;
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282 }
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283
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284 bool CeCosSerial::Write(void *pBuf,unsigned int nSize,unsigned int &nWritten)
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285 {
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286 bool rc=(TRUE==WriteFile((HANDLE)m_pHandle,pBuf,nSize,(LPDWORD)&nWritten,0));
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287 SaveError();
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288 return rc;
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289 }
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290
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291 bool CeCosSerial::ClearError()
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292 {
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293 DWORD dwErrors;
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294 bool rc=(TRUE==ClearCommError(HANDLE(m_pHandle),&dwErrors,0));
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295 if(dwErrors&CE_BREAK)TRACE(_T("The hardware detected a break condition.\n"));
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296 if(dwErrors&CE_DNS)TRACE(_T("Windows 95 and Windows 98: A parallel device is not selected.\n"));
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297 if(dwErrors&CE_FRAME)TRACE(_T("The hardware detected a framing error.\n"));
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298 if(dwErrors&CE_IOE)TRACE(_T("An I/O error occurred during communications with the device.\n"));
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299 if(dwErrors&CE_MODE)TRACE(_T("The requested mode is not supported, or the hFile parameter is invalid. If this value is specified, it is the only valid error.\n"));
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300 if(dwErrors&CE_OOP)TRACE(_T("Windows 95 and Windows 98: A parallel device signaled that it is out of paper.\n"));
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301 if(dwErrors&CE_OVERRUN)TRACE(_T("A character-buffer overrun has occurred. The next character is lost.\n"));
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302 if(dwErrors&CE_PTO)TRACE(_T("Windows 95 and Windows 98: A time-out occurred on a parallel device.\n"));
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303 if(dwErrors&CE_RXOVER)TRACE(_T("An input buffer overflow has occurred. There is either no room in the input buffer, or a character was received after the end-of-file (EOF) character.\n"));
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304 if(dwErrors&CE_RXPARITY)TRACE(_T("The hardware detected a parity error.\n"));
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305 if(dwErrors&CE_TXFULL)TRACE(_T("The application tried to transmit a character, but the output buffer was full.\n"));
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306 return rc;
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307 }
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308
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309 bool CeCosSerial::Flush (void)
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310 {
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311 bool rc=(TRUE==PurgeComm ((HANDLE)m_pHandle,PURGE_TXCLEAR|PURGE_RXCLEAR));
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312 SaveError();
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313 return rc;
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314 }
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315
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316 String CeCosSerial::ErrString() const
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317 {
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318 String str;
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319 LPVOID lpMsgBuf;
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320 FormatMessage(
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321 FORMAT_MESSAGE_ALLOCATE_BUFFER |
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322 FORMAT_MESSAGE_FROM_SYSTEM |
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323 FORMAT_MESSAGE_IGNORE_INSERTS,
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324 NULL,
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325 m_nErr,
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326 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
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327 (LPTSTR) &lpMsgBuf,
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328 0,
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329 NULL
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330 );
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331 str=(LPCTSTR)lpMsgBuf;
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332 // Free the buffer.
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333 LocalFree( lpMsgBuf );
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334 return str;
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335 }
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336
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337 #else // UNIX
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338
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339 String CeCosSerial::ErrString() const
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340 {
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341 return strerror(errno);
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342 }
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343
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344 bool CeCosSerial::Close()
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345 {
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346 bool rc=m_pHandle && (-1!=close((int)m_pHandle));
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347 m_pHandle=0;
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348 return rc;
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349 }
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350
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351 bool CeCosSerial::Open(LPCTSTR pszPort,int nBaud)
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352 {
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353 bool rc=false;
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354 m_nBaud=nBaud,
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355 m_strPort=pszPort;
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356 int fd = open(pszPort,O_RDWR|O_NONBLOCK);
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357 if (-1==fd) {
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358 ERROR(_T("Failed to open port %s\n"),pszPort);
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359 return false;
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360 } else {
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361 m_pHandle=(void *)fd;
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362 if(ApplySettings()){
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363 rc=true;
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364 } else {
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365 Close();
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366 ERROR(_T("Failed to apply settings.\n"));
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367 return false;
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368 }
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369 }
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370 return rc;
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371 }
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372
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373 bool CeCosSerial::ApplySettings()
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374 {
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375 struct termios buf, buf_verify;
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376 int rate;
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377
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378 // Clear the two structures so we can make a binary comparison later on.
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379 memset(&buf, 0, sizeof(buf));
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380 memset(&buf_verify, 0, sizeof(buf_verify));
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381
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382 LPCTSTR arpszStopbits[3]={_T("1"),_T("1.5"),_T("2")};
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383 TRACE(_T("Applysettings baud=%d bParity=%d stopbits=%s databits=%d\n"),
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384 m_nBaud,
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385 m_bParity,
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386 arpszStopbits[m_nStopBits],
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387 m_nDataBits);
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388
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389 switch(m_nBaud) {
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390 case 110:
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391 rate = B110;
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392 break;
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393 case 150:
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394 rate = B150;
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395 break;
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396 case 300:
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397 rate = B300;
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398 break;
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399 case 600:
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400 rate = B600;
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401 break;
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402 case 1200:
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403 rate = B1200;
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jlarmour
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404 break;
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405 case 2400:
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406 rate = B2400;
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407 break;
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408 case 4800:
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jlarmour
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409 rate = B4800;
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jlarmour
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410 break;
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jlarmour
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411 case 9600:
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jlarmour
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412 rate = B9600;
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413 break;
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jlarmour
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diff changeset
414 case 19200:
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jlarmour
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415 rate = B19200;
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416 break;
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jlarmour
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diff changeset
417 case 38400:
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418 rate = B38400;
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419 break;
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420 case 57600:
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421 rate = B57600;
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422 break;
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423 case 115200:
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424 rate = B115200;
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425 break;
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426 default:
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427 return false;
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428 };
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diff changeset
429
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430 TRACE(_T("Changing configuration...\n"));
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diff changeset
431
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jlarmour
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diff changeset
432 // Get current settings.
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433 if (tcgetattr((int) m_pHandle, &buf)) {
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434 fprintf(stderr, _T("Error: tcgetattr\n"));
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435 return false;
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parents:
diff changeset
436 }
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jlarmour
parents:
diff changeset
437
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jlarmour
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diff changeset
438 // Reset to raw.
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439 buf.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
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diff changeset
440 |INLCR|IGNCR|ICRNL|IXON);
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jlarmour
parents:
diff changeset
441 buf.c_oflag &= ~OPOST;
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jlarmour
parents:
diff changeset
442 buf.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
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jlarmour
parents:
diff changeset
443 buf.c_cflag &= ~(CSIZE|PARENB);
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jlarmour
parents:
diff changeset
444 buf.c_cflag |= CS8;
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jlarmour
parents:
diff changeset
445
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jlarmour
parents:
diff changeset
446 // Set baud rate.
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jlarmour
parents:
diff changeset
447 cfsetispeed(&buf, rate);
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jlarmour
parents:
diff changeset
448 cfsetospeed(&buf, rate);
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jlarmour
parents:
diff changeset
449
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jlarmour
parents:
diff changeset
450 // Set data bits.
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jlarmour
parents:
diff changeset
451 {
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jlarmour
parents:
diff changeset
452 int data_bits[9] = {0, 0, 0, 0, 0, CS5, CS6, CS7, CS8};
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jlarmour
parents:
diff changeset
453
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jlarmour
parents:
diff changeset
454 buf.c_cflag &= ~CSIZE;
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jlarmour
parents:
diff changeset
455 buf.c_cflag |= data_bits[m_nDataBits];
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jlarmour
parents:
diff changeset
456 }
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jlarmour
parents:
diff changeset
457
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
458 // Set stop bits.
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jlarmour
parents:
diff changeset
459 {
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jlarmour
parents:
diff changeset
460 buf.c_cflag &= ~CSTOPB;
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jlarmour
parents:
diff changeset
461 if (ONE_STOP_BIT != m_nStopBits)
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jlarmour
parents:
diff changeset
462 buf.c_cflag |= CSTOPB;
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jlarmour
parents:
diff changeset
463 }
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
464
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
465 // Set parity.
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jlarmour
parents:
diff changeset
466 {
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jlarmour
parents:
diff changeset
467 buf.c_cflag &= ~(PARENB | PARODD); // no parity.
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jlarmour
parents:
diff changeset
468 if (m_bParity) // even parity.
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jlarmour
parents:
diff changeset
469 buf.c_cflag |= PARENB;
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jlarmour
parents:
diff changeset
470 }
115
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parents: 82
diff changeset
471
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jlarmour
parents: 82
diff changeset
472 // Set flow control
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parents: 82
diff changeset
473 {
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diff changeset
474 buf.c_iflag &= ~(IXON|IXOFF);
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diff changeset
475 #ifdef CRTSCTS
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diff changeset
476 buf.c_cflag &= ~CRTSCTS;
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parents: 82
diff changeset
477 #endif
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jlarmour
parents: 82
diff changeset
478 if ( m_bXONXOFFFlowControl ) {
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diff changeset
479 buf.c_iflag |= (IXON|IXOFF);
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jlarmour
parents: 82
diff changeset
480 }
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jlarmour
parents: 82
diff changeset
481 if ( m_bRTSCTSFlowControl ) {
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jlarmour
parents: 82
diff changeset
482 #ifdef CRTSCTS
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diff changeset
483 buf.c_cflag |= CRTSCTS;
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parents: 82
diff changeset
484 #else
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parents: 82
diff changeset
485 return false;
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parents: 82
diff changeset
486 #endif
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jlarmour
parents: 82
diff changeset
487 }
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jlarmour
parents: 82
diff changeset
488 if ( m_bDSRDTRFlowControl ) {
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jlarmour
parents: 82
diff changeset
489 #ifdef CDSRDTR
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diff changeset
490 buf.c_cflag |= CDSRDTR;
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parents: 82
diff changeset
491 #else
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diff changeset
492 return false;
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parents: 82
diff changeset
493 #endif
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jlarmour
parents: 82
diff changeset
494 }
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parents: 82
diff changeset
495
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parents: 82
diff changeset
496
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jlarmour
parents: 82
diff changeset
497 }
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
498
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
499 // Set the new settings
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jlarmour
parents:
diff changeset
500 if (tcsetattr((int) m_pHandle, TCSADRAIN, &buf)) {
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jlarmour
parents:
diff changeset
501 fprintf(stderr, _T("Error: tcsetattr\n"));
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
502 return false;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
503 }
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jlarmour
parents:
diff changeset
504
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
505 // Now read back the settings. On SunOS tcsetattr only returns
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
506 // error if _all_ settings fail. If just a few settings are not
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
507 // supported, the call returns true while the hardware is set to a
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
508 // combination of old and new settings.
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jlarmour
parents:
diff changeset
509 if (tcgetattr((int) m_pHandle, &buf_verify)) {
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jlarmour
parents:
diff changeset
510 fprintf(stderr, _T("Error: tcgetattr\n"));
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
511 return false;
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jlarmour
parents:
diff changeset
512 }
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jlarmour
parents:
diff changeset
513 if (memcmp(&buf, &buf_verify, sizeof(buf))) {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
514 fprintf(stderr, _T("Error: termios verify failed\n"));
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jlarmour
parents:
diff changeset
515 return false;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
516 }
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jlarmour
parents:
diff changeset
517
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
518 // A slight delay to allow things to settle.
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jlarmour
parents:
diff changeset
519 CeCosThreadUtils::Sleep(10);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
520
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
521 TRACE(_T("Done.\n"));
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jlarmour
parents:
diff changeset
522
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
523 return true;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
524 }
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
525
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
526 bool CeCosSerial::Flush (void)
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jlarmour
parents:
diff changeset
527 {
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jlarmour
parents:
diff changeset
528 return 0==tcflush((int) m_pHandle, TCIOFLUSH);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
529 }
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
530
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
531 bool CeCosSerial::Read (void *pBuf,unsigned int nSize,unsigned int &nRead)
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
532 {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
533
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
534 if (!m_bBlockingReads) {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
535 nRead = 0;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
536 int n = read((int)m_pHandle, pBuf, nSize);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
537 if (-1 == n) {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
538 if (EAGAIN == errno)
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
539 return true;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
540 ERROR(_T("Read failed: %d\n"), errno);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
541 return false;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
542 }
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
543 nRead = n;
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
544 #if 0
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
545 if (n>0) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
546 unsigned int i;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
547 fprintf(stderr, "%d:", nRead);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
548 for (i = 0; i < nRead; i++)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
549 fprintf(stderr, "%02x!", ((unsigned char *)pBuf)[i]);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
550 fprintf(stderr, "\n");
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
551 }
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
552 #endif
82
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
553 return true;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
554 }
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
555
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
556 // Blocking reads: emulate the Windows semantics:
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
557 // If m_nTotalReadTimeout elapses before we see the first TCHAR,
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
558 // return.
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
559 // If m_nInterCharReadTimeout elapses after reading any
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
560 // subsequent TCHAR, return.
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
561
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
562 fd_set rfds;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
563 FD_ZERO(&rfds);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
564 FD_SET((int)m_pHandle, &rfds);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
565
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
566 // Start with total timeout.
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
567 struct timeval tv;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
568 tv.tv_sec = m_nTotalReadTimeout / 1000;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
569 tv.tv_usec = (m_nTotalReadTimeout % 1000) * 1000;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
570
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
571 unsigned char* pData = (unsigned char*) pBuf;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
572 nRead = 0;
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
573 while (nSize) {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
574 switch(select((int)m_pHandle + 1, &rfds, NULL, NULL, &tv)) {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
575 case 1:
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
576 {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
577 int n = read((int)m_pHandle, pData, nSize);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
578 if (-1 == n && EAGAIN != errno) {
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
579 ERROR(_T("Read failed: %d\n"), errno);
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
580 return false; // FAILED
6736c52df507 Merge from eCos master repository on 2000-04-14-13:35:46-BST
jlarmour
parents:
diff changeset
581 }
115
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
582 else if (n > 0) {
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
583 #if 0
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
584 unsigned int i;
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
585 fprintf(stderr, "%d:", nRead);
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
586 for (i = 0; i < nRead; i++)
6ed91473a1cd Merge from eCos master repository on 2000-08-21-22:40:54-BST
jlarmour
parents: 82
diff changeset
587 fprintf(stderr, "%02x!", ((unsigned char *)pBuf)[i]);
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588 fprintf(stderr, "\n");
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589 #endif
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590 nRead += n;
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591 pData += n;
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592 nSize -= n;
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593 }
82
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594
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595 // Now use inter-char timeout.
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596 tv.tv_sec = m_nInterCharReadTimeout / 1000;
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597 tv.tv_usec = (m_nInterCharReadTimeout % 1000) * 1000;
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598 }
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599 break;
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600 case 0:
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601 return true; // Timeout
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602 case -1:
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603 ERROR(_T("Select failed: %d\n"), errno);
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604 return false;
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605 }
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606 }
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607
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608 return true;
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609 }
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610
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611 bool CeCosSerial::Write(void *pBuf,unsigned int nSize,unsigned int &nWritten)
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612 {
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613 bool rc;
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614 int n=write((int)m_pHandle,pBuf,nSize);
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615 if(-1==n){
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616 nWritten=0;
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617 if (errno == EAGAIN)
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618 rc = true;
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619 else
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620 rc=false;
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621 } else {
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622 nWritten=n;
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623 rc=true;
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624 }
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625 return rc;
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626 }
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627
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628 bool CeCosSerial::ClearError()
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629 {
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630 return false;
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631 }
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632
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633 #endif