Mercurial > public > ostc4

annotate Small_CPU/Src/uartProtocol_Sentinel.c @ 886:d398ecc7d103 Evo_2_23

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Improve communication stability: In case e.g. the bluetooth module has just been started some 'noice' characters may be in the receive buffer causing an error in the modul responds function. In case the legth of the response is unexpected then the buffer will be evaluated till it is empty or an matching answer is found.
author Ideenmodellierer
date Sun, 01 Sep 2024 21:38:06 +0200
parents 3e499569baf3
children
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rev   line source
842
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1 /**
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2 ******************************************************************************
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3 * @file uartProtocol_Co2.c
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4 * @author heinrichs weikamp gmbh
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5 * @version V0.0.1
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6 * @date 15-Jan-2024
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7 * @brief Interface functionality to read data from Sentinel rebreather
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8 *
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9 @verbatim
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10
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11
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12 @endverbatim
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13 ******************************************************************************
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14 * @attention
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15 *
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16 * <h2><center>&copy; COPYRIGHT(c) 2024 heinrichs weikamp</center></h2>
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17 *
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18 ******************************************************************************
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19 */
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20 /* Includes ------------------------------------------------------------------*/
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21
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22 #include <string.h>
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23 #include <uartProtocol_Sentinel.h>
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24 #include "uart.h"
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25 #include "externalInterface.h"
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26
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27
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28 #ifdef ENABLE_SENTINEL_MODE
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29 static uint8_t SentinelConnected = 0; /* Binary indicator if a sensor is connected or not */
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30 static receiveStateSentinel_t rxState = SENTRX_Ready;
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31
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32 void ConvertByteToHexString(uint8_t byte, char* str)
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33 {
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34 uint8_t worker = 0;
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35 uint8_t digit = 0;
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36 uint8_t digitCnt = 1;
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37
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38 worker = byte;
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39 while((worker!=0) && (digitCnt != 255))
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40 {
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41 digit = worker % 16;
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42 if( digit < 10)
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43 {
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44 digit += '0';
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45 }
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46 else
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47 {
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48 digit += 'A' - 10;
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49 }
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50 str[digitCnt--]= digit;
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51 worker = worker / 16;
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52 }
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53 }
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54
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55 void uartSentinel_Control(void)
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56 {
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57 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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58 uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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59
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60 if(localComState == UART_SENTINEL_INIT)
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61 {
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62 SentinelConnected = 0;
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63 UART_StartDMA_Receiption();
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64 localComState = UART_SENTINEL_IDLE;
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65 }
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66 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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67 }
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68
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69 void uartSentinel_ProcessData(uint8_t data)
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70 {
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71 static uint8_t dataType = 0;
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72 static uint32_t dataValue[3];
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73 static uint8_t dataValueIdx = 0;
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74
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75 static uint8_t checksum = 0;
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76 static char checksum_str[]="00";
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77
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78 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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79 uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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80
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81 switch(rxState)
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82 {
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83 case SENTRX_Ready: if((data >= 'a') && (data <= 'z'))
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84 {
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85 rxState = SENTRX_DetectStart;
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86 checksum = 0;
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87 }
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88 break;
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89
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90 case SENTRX_DetectStart: checksum += data;
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91 if(data == '1')
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92 {
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93 rxState = SENTRX_SelectData;
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94 dataType = 0xFF;
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95
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96 }
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97 else
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98 {
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99 rxState = SENTRX_Ready;
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100 }
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101 break;
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102
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103 case SENTRX_SelectData: checksum += data;
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104 switch(data)
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105 {
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106 case 'T': dataType = data;
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107 break;
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108 case '0': if(dataType != 0xff)
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109 {
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110 rxState = SENTRX_Data0;
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111 dataValueIdx = 0;
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112 dataValue[0] = 0;
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113
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114 }
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115 else
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116 {
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117 rxState = SENTRX_Ready;
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118 }
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119 break;
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120 default: rxState = SENTRX_Ready;
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121 }
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122 break;
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123
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124 case SENTRX_Data0:
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125 case SENTRX_Data1:
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126 case SENTRX_Data2:
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127 case SENTRX_Data4:
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128 case SENTRX_Data5:
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129 case SENTRX_Data6:
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130 case SENTRX_Data8:
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131 case SENTRX_Data9:
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132 case SENTRX_Data10: checksum += data;
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133 if((data >= '0') && (data <= '9'))
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134 {
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135 dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (data - '0');
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136 rxState++;
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137 }
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138 else
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139 {
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140 rxState = SENTRX_Ready;
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141 }
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142 break;
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143
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144 case SENTRX_Data3:
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145 case SENTRX_Data7: checksum += data;
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146 if(data == '0')
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147 {
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148 rxState++;
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149 dataValueIdx++;
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150 dataValue[dataValueIdx] = 0;
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151 }
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152 else
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153 {
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154 rxState = SENTRX_Ready;
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155 }
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156 break;
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157 case SENTRX_Data11: rxState = SENTRX_DataComplete;
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158 ConvertByteToHexString(checksum,checksum_str);
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159 if(data == checksum_str[0])
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160 {
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161 rxState = SENTRX_DataComplete;
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162 }
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163 else
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164 {
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165 rxState = SENTRX_Ready;
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166 }
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167
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168 break;
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169
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170 case SENTRX_DataComplete: if(data == checksum_str[1])
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171 {
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172 setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0));
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173 setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0));
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174 setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0));
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175 SentinelConnected = 1;
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176 localComState = UART_SENTINEL_OPERATING;
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177 }
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178 rxState = SENTRX_Ready;
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179 break;
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180
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181
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182 default: rxState = SENTRX_Ready;
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183 break;
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184
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185 }
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186 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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187 }
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188
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189 uint8_t uartSentinel_isSensorConnected()
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190 {
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191 return SentinelConnected;
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192 }
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193
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194 #endif
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195