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annotate Small_CPU/Src/uartProtocol_Sentinel.c @ 1062:785772303f9c Icon_Integration

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Added pressure sensors in Sentnel mode: The Red Head/Provide pressure and tempstick information on a uart channel together with the O2 data. The support for receiving pressure data has been added to the Sentinel protocol function.
author Ideenmodellierer
date Tue, 10 Feb 2026 19:36:05 +0100
parents effadaa3a1f7
children
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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 (and what type of subsensor) 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 extern sUartComCtrl Uart1Ctrl;
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33
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34 void ConvertByteToHexString(uint8_t byte, char* str)
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35 {
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36 uint8_t worker = 0;
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37 uint8_t digit = 0;
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38 uint8_t digitCnt = 1;
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39
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40 worker = byte;
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41 while((worker!=0) && (digitCnt != 255))
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42 {
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43 digit = worker % 16;
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44 if( digit < 10)
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45 {
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46 digit += '0';
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47 }
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48 else
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49 {
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50 digit += 'A' - 10;
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51 }
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52 str[digitCnt--]= digit;
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53 worker = worker / 16;
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54 }
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55 }
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56
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57 void uartSentinel_Control(void)
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58 {
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59 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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60 uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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61
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62 if(localComState == UART_SENTINEL_INIT)
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63 {
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64 SentinelConnected = 0;
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65 UART_StartDMA_Receiption(&Uart1Ctrl);
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66 localComState = UART_SENTINEL_IDLE;
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67 }
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68 if(localComState == UART_SENTINEL_IDLE)
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69 {
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70 localComState = UART_SENTINEL_OPERATING; /* state is only used for timeout detection */
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71 }
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72 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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73 }
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74
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75 void uartSentinel_ProcessData(uint8_t data)
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76 {
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77 static uint8_t dataType = 0;
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78 static uint32_t dataValue[3];
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79 static uint8_t dataValueIdx = 0;
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80
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81 static uint8_t checksum = 0;
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82 static char checksum_str[]="00";
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83
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84 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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85 uartSentinelStatus_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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86
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87 switch(rxState)
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88 {
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89 case SENTRX_Ready: if((data >= 'a') && (data <= 'z')) /* Alive byte */
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90 {
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91 rxState = SENTRX_DetectStart;
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92 checksum = 0;
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93 }
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94 break;
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95
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96 case SENTRX_DetectStart: checksum += data; /* data available */
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97 if(data == '1')
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98 {
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99 rxState = SENTRX_SelectData;
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100 dataType = 0xFF;
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101
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102 }
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103 else
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104 {
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105 rxState = SENTRX_Ready;
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106 }
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107 break;
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108
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109 case SENTRX_SelectData: checksum += data; /* data type */
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110 switch(data)
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111 {
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112 case UART_SENTINEL_PRESSURE_O2: /* no '0' spacing for pressure sensors */
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113 case UART_SENTINEL_PRESSURE_D: dataType = data;
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114 rxState = SENTRX_Data0;
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115 dataValueIdx = 0;
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116 dataValue[0] = 0;
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117 break;
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118 case UART_SENTINEL_O2_P:
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119 case UART_SENTINEL_O2_S:
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120 case UART_SENTINEL_TEMPSTICK: dataType = data;
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121 break;
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122
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123 case '0': if(dataType != 0xff)
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124 {
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125 rxState = SENTRX_Data0;
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126 dataValueIdx = 0;
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127 dataValue[0] = 0;
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128
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129 }
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130 else
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131 {
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132 rxState = SENTRX_Ready;
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133 }
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134 break;
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135 default: rxState = SENTRX_Ready;
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136 }
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137 break;
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138
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139 case SENTRX_Data0:
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140 case SENTRX_Data1:
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141 case SENTRX_Data2:
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142 case SENTRX_Data4:
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143 case SENTRX_Data5:
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144 case SENTRX_Data6:
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145 case SENTRX_Data8:
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146 case SENTRX_Data9:
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147 case SENTRX_Data10: checksum += data;
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148 if((data >= '0') && (data <= '9'))
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149 {
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150 dataValue[dataValueIdx] = dataValue[dataValueIdx] * 10 + (data - '0');
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151 if((rxState == SENTRX_Data2) && ((dataType == UART_SENTINEL_PRESSURE_O2) || (dataType == UART_SENTINEL_PRESSURE_D)))
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152 {
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153 rxState = SENTRX_CheckSum;
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154 }
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155 else
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156 {
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157 rxState++;
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158 }
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159 }
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160 else
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161 {
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162 rxState = SENTRX_Ready;
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163 }
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164 break;
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165
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166 case SENTRX_Data3:
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167 case SENTRX_Data7: checksum += data;
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168 if(data == '0')
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169 {
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170 dataValueIdx++;
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171 dataValue[dataValueIdx] = 0;
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172 rxState++;
842
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173 }
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174 else
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175 {
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176 rxState = SENTRX_Ready;
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177 }
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178 break;
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179 case SENTRX_CheckSum: ConvertByteToHexString(checksum,checksum_str);
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180 if(data == checksum_str[0])
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181 {
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182 rxState = SENTRX_DataComplete;
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183 }
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184 else
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185 {
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186 rxState = SENTRX_Ready;
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187 }
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188
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189 break;
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190
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191 case SENTRX_DataComplete: if(data == checksum_str[1])
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192 {
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193 switch(dataType)
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194 {
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195 case UART_SENTINEL_O2_P: setExternalInterfaceChannel(0,(float)(dataValue[0] / 10.0));
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196 setExternalInterfaceChannel(1,(float)(dataValue[1] / 10.0));
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197 setExternalInterfaceChannel(2,(float)(dataValue[2] / 10.0));
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198 SentinelConnected |= SENTINEL_O2;
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199 break;
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200 case UART_SENTINEL_PRESSURE_O2: externalInterface_SetBottlePressure(0,dataValue[0]);
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201 SentinelConnected |= SENTINEL_PRESSURE;
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202 break;
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203 case UART_SENTINEL_PRESSURE_D: externalInterface_SetBottlePressure(1,dataValue[0]);
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204 SentinelConnected |= SENTINEL_PRESSURE;
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205 break;
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206 case UART_SENTINEL_TEMPSTICK: SentinelConnected |= SENTINEL_TEMPSTICK;
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207 }
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208 localComState = UART_SENTINEL_IDLE;
842
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209 }
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210 rxState = SENTRX_Ready;
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211 break;
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212
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213
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214 default: rxState = SENTRX_Ready;
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215 break;
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216
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217 }
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218 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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219 }
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220
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221 uint8_t uartSentinel_isSensorConnected()
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222 {
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223 return SentinelConnected;
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224 }
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225
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226 #endif
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227