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annotate deps/Platinum/ThirdParty/Neptune/Source/System/Win32/NptWin32SerialPort.cpp @ 0:3425707ddbf6

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author fraserofthenight
date Mon, 06 Jul 2009 08:06:28 -0700
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1 /*****************************************************************
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2 |
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3 | Neptune - Serial Ports :: Win32 Implementation
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4 |
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5 | (c) 2001-2007 Gilles Boccon-Gibod
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6 | Author: Gilles Boccon-Gibod (bok@bok.net)
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7 |
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8 ****************************************************************/
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9
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10 /*----------------------------------------------------------------------
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11 | includes
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12 +---------------------------------------------------------------------*/
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13 #include <windows.h>
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14
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15 #include "NptUtils.h"
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16 #include "NptSerialPort.h"
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17 #include "NptStrings.h"
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18 #include "NptLogging.h"
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19
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20 /*----------------------------------------------------------------------
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21 | NPT_Win32HandletWrapper
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22 +---------------------------------------------------------------------*/
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23 class NPT_Win32HandleWrapper
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24 {
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25 public:
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26 // constructors and destructor
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27 NPT_Win32HandleWrapper(HANDLE handle) : m_Handle(handle) {}
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28 ~NPT_Win32HandleWrapper() {
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29 CloseHandle(m_Handle);
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30 }
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31
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32 // methods
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33 HANDLE GetHandle() { return m_Handle; }
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34
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35 private:
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36 // members
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37 HANDLE m_Handle;
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38 };
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39
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40 typedef NPT_Reference<NPT_Win32HandleWrapper> NPT_Win32HandleReference;
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41
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42 /*----------------------------------------------------------------------
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43 | NPT_Win32SerialPortStream
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44 +---------------------------------------------------------------------*/
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45 class NPT_Win32SerialPortStream
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46 {
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47 public:
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48 // constructors and destructor
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49 NPT_Win32SerialPortStream(NPT_Win32HandleReference handle) :
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50 m_HandleReference(handle) {}
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51
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52 protected:
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53 // constructors and destructors
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54 virtual ~NPT_Win32SerialPortStream() {}
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55
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56 // members
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57 NPT_Win32HandleReference m_HandleReference;
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58 };
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59
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60 /*----------------------------------------------------------------------
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61 | NPT_Win32SerialPortInputStream
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62 +---------------------------------------------------------------------*/
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63 class NPT_Win32SerialPortInputStream : public NPT_InputStream,
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64 private NPT_Win32SerialPortStream
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65
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66 {
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67 public:
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68 // constructors and destructor
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69 NPT_Win32SerialPortInputStream(NPT_Win32HandleReference& handle) :
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70 NPT_Win32SerialPortStream(handle) {}
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71
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72 // NPT_InputStream methods
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73 NPT_Result Read(void* buffer,
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74 NPT_Size bytes_to_read,
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75 NPT_Size* bytes_read);
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76 NPT_Result Seek(NPT_Position /* offset */) {
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77 return NPT_ERROR_NOT_SUPPORTED;
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78 }
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79 NPT_Result Tell(NPT_Position& /* offset */) {
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80 return NPT_ERROR_NOT_SUPPORTED;
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81 }
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82 NPT_Result GetSize(NPT_LargeSize& /* size */) {
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83 return NPT_ERROR_NOT_SUPPORTED;
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84 }
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85 NPT_Result GetAvailable(NPT_LargeSize& /* available */) {
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86 return NPT_ERROR_NOT_SUPPORTED;
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87 }
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88 };
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89
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90 /*----------------------------------------------------------------------
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91 | NPT_Win32SerialPortInputStream::Read
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92 +---------------------------------------------------------------------*/
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93 NPT_Result
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94 NPT_Win32SerialPortInputStream::Read(void* buffer,
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95 NPT_Size bytes_to_read,
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96 NPT_Size* bytes_read)
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97 {
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98 DWORD nb_read = 0;
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99 BOOL result = ReadFile(m_HandleReference->GetHandle(),
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100 buffer,
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101 bytes_to_read,
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102 &nb_read,
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103 NULL);
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104 if (result == TRUE) {
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105 if (bytes_read) *bytes_read = nb_read;
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106 return NPT_SUCCESS;
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107 } else {
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108 if (bytes_read) *bytes_read = 0;
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109 return NPT_FAILURE;
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110 }
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111 }
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112
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113 /*----------------------------------------------------------------------
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114 | NPT_Win32SerialPortOutputStream
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115 +---------------------------------------------------------------------*/
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116 class NPT_Win32SerialPortOutputStream : public NPT_OutputStream,
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117 private NPT_Win32SerialPortStream
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118 {
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119 public:
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120 // constructors and destructor
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121 NPT_Win32SerialPortOutputStream(NPT_Win32HandleReference& handle) :
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122 NPT_Win32SerialPortStream(handle) {}
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123
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124 // NPT_InputStream methods
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125 NPT_Result Write(const void* buffer,
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126 NPT_Size bytes_to_write,
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127 NPT_Size* bytes_written);
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128 NPT_Result Seek(NPT_Position /* offset */) {
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129 return NPT_ERROR_NOT_SUPPORTED;
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130 }
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131 NPT_Result Tell(NPT_Position& /* offset */) {
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132 return NPT_ERROR_NOT_SUPPORTED;
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133 }
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134 };
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135
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136 /*----------------------------------------------------------------------
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137 | NPT_Win32SerialPortOutputStream::Write
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138 +---------------------------------------------------------------------*/
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139 NPT_Result
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140 NPT_Win32SerialPortOutputStream::Write(const void* buffer,
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141 NPT_Size bytes_to_write,
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142 NPT_Size* bytes_written)
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143 {
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144 DWORD nb_written = 0;
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145
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146 BOOL result = WriteFile(m_HandleReference->GetHandle(),
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147 buffer,
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148 bytes_to_write,
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149 &nb_written,
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150 NULL);
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151 if (result == TRUE) {
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152 if (bytes_written) *bytes_written = nb_written;
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153 return NPT_SUCCESS;
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154 } else {
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155 if (bytes_written) *bytes_written = 0;
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156 return NPT_FAILURE;
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157 }
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158 }
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159
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160 /*----------------------------------------------------------------------
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161 | NPT_Win32SerialPort
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162 +---------------------------------------------------------------------*/
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163 class NPT_Win32SerialPort: public NPT_SerialPortInterface
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164 {
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165 public:
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166 // constructors and destructor
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167 NPT_Win32SerialPort(const char* name);
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168 ~NPT_Win32SerialPort();
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169
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170 // NPT_SerialPortInterface methods
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171 NPT_Result Open(unsigned int speed,
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172 NPT_SerialPortStopBits stop_bits = NPT_SERIAL_PORT_STOP_BITS_1,
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173 NPT_SerialPortFlowControl flow_control = NPT_SERIAL_PORT_FLOW_CONTROL_NONE,
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174 NPT_SerialPortParity parity = NPT_SERIAL_PORT_PARITY_NONE);
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175 NPT_Result Close();
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176 NPT_Result GetInputStream(NPT_InputStreamReference& stream);
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177 NPT_Result GetOutputStream(NPT_OutputStreamReference& stream);
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178
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179 private:
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180 // members
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181 NPT_String m_Name;
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182 NPT_Win32HandleReference m_HandleReference;
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183 };
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184
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185 /*----------------------------------------------------------------------
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186 | NPT_Win32SerialPort::NPT_Win32SerialPort
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187 +---------------------------------------------------------------------*/
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188 NPT_Win32SerialPort::NPT_Win32SerialPort(const char* name) :
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189 m_Name(name)
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190 {
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191 }
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192
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193 /*----------------------------------------------------------------------
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194 | NPT_Win32SerialPort::~NPT_Win32SerialPort
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195 +---------------------------------------------------------------------*/
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196 NPT_Win32SerialPort::~NPT_Win32SerialPort()
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197 {
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198 Close();
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199 }
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200
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201 /*----------------------------------------------------------------------
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202 | NPT_Win32SerialPort::Open
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203 +---------------------------------------------------------------------*/
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204 NPT_Result
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205 NPT_Win32SerialPort::Open(unsigned int speed,
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206 NPT_SerialPortStopBits stop_bits,
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207 NPT_SerialPortFlowControl flow_control,
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208 NPT_SerialPortParity parity)
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209 {
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210 // check if we're already open
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211 if (!m_HandleReference.IsNull()) {
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212 return NPT_ERROR_SERIAL_PORT_ALREADY_OPEN;
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213 }
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214
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215 HANDLE handle = CreateFile(m_Name,
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216 GENERIC_READ | GENERIC_WRITE,
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217 0,
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218 0,
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219 OPEN_EXISTING,
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220 0,
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221 0);
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222 if (handle == INVALID_HANDLE_VALUE) {
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223 return NPT_ERROR_NO_SUCH_SERIAL_PORT;
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224 }
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225
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226 // set the parameters
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227 DCB dcb;
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228 NPT_SetMemory(&dcb, 0, sizeof(dcb));
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229 dcb.DCBlength = sizeof(DCB);
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230 if (!GetCommState(handle, &dcb)) {
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231 CloseHandle(handle);
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232 return NPT_FAILURE;
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233 }
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234 dcb.fBinary = TRUE;
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235 dcb.BaudRate = speed;
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236 switch (stop_bits) {
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237 case NPT_SERIAL_PORT_STOP_BITS_1: dcb.StopBits = ONESTOPBIT; break;
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238 case NPT_SERIAL_PORT_STOP_BITS_1_5: dcb.StopBits = ONE5STOPBITS; break;
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239 case NPT_SERIAL_PORT_STOP_BITS_2: dcb.StopBits = TWOSTOPBITS; break;
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240 }
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241 switch (flow_control) {
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242 case NPT_SERIAL_PORT_FLOW_CONTROL_NONE:
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243 dcb.fOutX = dcb.fOutxCtsFlow = dcb.fOutxDsrFlow = FALSE;
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244 dcb.fInX = dcb.fDsrSensitivity = FALSE;
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245 dcb.fRtsControl = RTS_CONTROL_DISABLE;
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246 dcb.fDtrControl = DTR_CONTROL_DISABLE;
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247 break;
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248
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249 case NPT_SERIAL_PORT_FLOW_CONTROL_HARDWARE:
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250 dcb.fOutX = dcb.fOutxDsrFlow = FALSE;
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251 dcb.fOutxCtsFlow = TRUE;
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252 dcb.fInX = dcb.fDsrSensitivity = FALSE;
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253 dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
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254 dcb.fDtrControl = DTR_CONTROL_DISABLE;
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255 break;
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256
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257 case NPT_SERIAL_PORT_FLOW_CONTROL_XON_XOFF:
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258 dcb.fOutX = TRUE;
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259 dcb.fOutxCtsFlow = dcb.fOutxDsrFlow = FALSE;
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260 dcb.fInX = TRUE;
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261 dcb.fDsrSensitivity = FALSE;
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262 dcb.fRtsControl = RTS_CONTROL_DISABLE;
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263 dcb.fDtrControl = DTR_CONTROL_DISABLE;
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264 break;
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265 }
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266 switch (parity) {
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267 case NPT_SERIAL_PORT_PARITY_NONE: dcb.fParity = FALSE; dcb.Parity = NOPARITY; break;
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268 case NPT_SERIAL_PORT_PARITY_EVEN: dcb.fParity = TRUE; dcb.Parity = EVENPARITY; break;
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269 case NPT_SERIAL_PORT_PARITY_ODD: dcb.fParity = TRUE; dcb.Parity = ODDPARITY; break;
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270 case NPT_SERIAL_PORT_PARITY_MARK: dcb.fParity = TRUE; dcb.Parity = MARKPARITY; break;
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271 }
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272 if (!SetCommState(handle, &dcb)) {
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273 CloseHandle(handle);
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274 return NPT_FAILURE;
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parents:
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275 }
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276
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277 // create a reference to the FILE object
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278 m_HandleReference = new NPT_Win32HandleWrapper(handle);
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279
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280 return NPT_SUCCESS;
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parents:
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281 }
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282
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fraserofthenight
parents:
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283 /*----------------------------------------------------------------------
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284 | NPT_Win32SerialPort::Close
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285 +---------------------------------------------------------------------*/
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286 NPT_Result
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287 NPT_Win32SerialPort::Close()
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288 {
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fraserofthenight
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289 // release the file reference
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290 m_HandleReference = NULL;
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291
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292 return NPT_SUCCESS;
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parents:
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293 }
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294
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fraserofthenight
parents:
diff changeset
295 /*----------------------------------------------------------------------
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fraserofthenight
parents:
diff changeset
296 | NPT_Win32SerialPort::GetInputStream
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fraserofthenight
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diff changeset
297 +---------------------------------------------------------------------*/
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298 NPT_Result
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299 NPT_Win32SerialPort::GetInputStream(NPT_InputStreamReference& stream)
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300 {
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301 // default value
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302 stream = NULL;
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303
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fraserofthenight
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304 // check that the file is open
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305 if (m_HandleReference.IsNull()) return NPT_ERROR_SERIAL_PORT_NOT_OPEN;
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parents:
diff changeset
306
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fraserofthenight
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diff changeset
307 // create a stream
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308 stream = new NPT_Win32SerialPortInputStream(m_HandleReference);
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309
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310 return NPT_SUCCESS;
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parents:
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311 }
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312
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fraserofthenight
parents:
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313 /*----------------------------------------------------------------------
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314 | NPT_Win32SerialPort::GetOutputStream
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315 +---------------------------------------------------------------------*/
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316 NPT_Result
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317 NPT_Win32SerialPort::GetOutputStream(NPT_OutputStreamReference& stream)
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parents:
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318 {
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fraserofthenight
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319 // default value
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320 stream = NULL;
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321
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fraserofthenight
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322 // check that the file is open
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323 if (m_HandleReference.IsNull()) return NPT_ERROR_SERIAL_PORT_NOT_OPEN;
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parents:
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324
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fraserofthenight
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325 // create a stream
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326 stream = new NPT_Win32SerialPortOutputStream(m_HandleReference);
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fraserofthenight
parents:
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327
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328 return NPT_SUCCESS;
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parents:
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329 }
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330
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fraserofthenight
parents:
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331 /*----------------------------------------------------------------------
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fraserofthenight
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332 | NPT_SerialPort::NPT_SerialPort
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fraserofthenight
parents:
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333 +---------------------------------------------------------------------*/
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fraserofthenight
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334 NPT_SerialPort::NPT_SerialPort(const char* name)
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fraserofthenight
parents:
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335 {
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336 m_Delegate = new NPT_Win32SerialPort(name);
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337 }