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annotate Small_CPU/Src/uartProtocol_Sentinel.c @ 923:6fc0e3d230e4 Evo_2_23 tip

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UART6 DMA handling: Make sure that RX transmission uses DMA stream 2
author Ideenmodellierer
date Mon, 04 Nov 2024 20:21:02 +0100
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