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annotate Small_CPU/Src/uartProtocol_Co2.c @ 1074:ad61a2c9095a Icon_Integration

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Forward profile sensor settings to RTE: The profile settings include the sensor map => forward the sensor map matching to the profile to the RTE.
author ideenmodellierer
date Sun, 22 Feb 2026 19:56:43 +0100
parents 8b97003dbb60
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 31-Jul-2023
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7 * @brief Interface functionality to external, UART based CO2 sensors
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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) 2023 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_Co2.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 #ifdef ENABLE_CO2_SUPPORT
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28 static uint8_t CO2Connected = 0; /* Binary indicator if a sensor is connected or not */
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29 static receiveStateCO2_t rxState = CO2RX_Ready;
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30
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31
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32
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33 float LED_Level = 0.0; /* Normalized LED value which may be used as indication for the health status of the sensor */
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34 float LED_ZeroOffset = 0.0;
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35 float pCO2 = 0.0;
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36
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37
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38
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39 void uartCo2_SendCmd(uint8_t CO2Cmd, uint8_t *cmdString, uint8_t *cmdLength)
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40 {
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41 *cmdLength = 0;
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42
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43 switch (CO2Cmd)
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44 {
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45 case CO2CMD_MODE_POLL: *cmdLength = snprintf((char*)cmdString, 20, "K 2\r\n");
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46 break;
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47 case CO2CMD_MODE_STREAM: *cmdLength = snprintf((char*)cmdString, 20, "K 1\r\n");
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48 break;
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49 case CO2CMD_CALIBRATE_H: *cmdLength = snprintf((char*)cmdString, 20, "P 10 1\r\n"); /* set 400ppm as reference => 1 (256) and 144 */
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50 break;
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51 case CO2CMD_CALIBRATE_L: *cmdLength = snprintf((char*)cmdString, 20, "P 11 144\r\n");
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52 break;
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53 case CO2CMD_CALIBRATE: *cmdLength = snprintf((char*)cmdString, 20, "G\r\n");
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54 break;
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55 case CO2CMD_GETDATA: *cmdLength = snprintf((char*)cmdString, 20, "Q\r\n");
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56 break;
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57 case CO2CMD_GETSCALE: *cmdLength = snprintf((char*)cmdString, 20, ".\r\n");
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58 break;
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59 default: *cmdLength = 0;
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60 break;
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61 }
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62 if(cmdLength != 0)
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63 {
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64 UART_SendCmdString(cmdString);
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65 }
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66 }
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67
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68
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69 void uartCo2_Control(void)
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70 {
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71 static uint8_t cmdString[20];
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72 static uint8_t cmdLength = 0;
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73 static uint8_t lastComState = UART_CO2_INIT;
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74
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75 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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76 uartCO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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77
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78 if(localComState == UART_CO2_ERROR)
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79 {
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80 localComState = lastComState;
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81 }
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82
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83 switch(localComState)
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84 {
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85 case UART_CO2_INIT: CO2Connected = 0;
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86 externalInterface_SetCO2Scale(0.0);
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87 UART_ReadData(SENSOR_CO2, 1); /* flush buffer */
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88 UART_StartDMA_Receiption(&Uart1Ctrl);
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89 localComState = UART_CO2_SETUP;
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90 uartCo2_SendCmd(CO2CMD_GETSCALE, cmdString, &cmdLength);
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91 break;
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92 case UART_CO2_SETUP: if(externalInterface_GetCO2Scale() == 0.0)
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93 {
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94 uartCo2_SendCmd(CO2CMD_GETSCALE, cmdString, &cmdLength);
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95 }
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96 else
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97 {
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98 uartCo2_SendCmd(CO2CMD_MODE_POLL, cmdString, &cmdLength);
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99 localComState = UART_CO2_MODE;
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100 }
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101 break;
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102 case UART_CO2_MODE: uartCo2_SendCmd(CO2CMD_MODE_POLL, cmdString, &cmdLength);
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103 break;
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104 case UART_CO2_CALIBRATE_H: uartCo2_SendCmd(CO2CMD_CALIBRATE_H, cmdString, &cmdLength);
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105 break;
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106 case UART_CO2_CALIBRATE_L: uartCo2_SendCmd(CO2CMD_CALIBRATE_L, cmdString, &cmdLength);
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107 break;
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108 case UART_CO2_CALIBRATE: uartCo2_SendCmd(CO2CMD_CALIBRATE, cmdString, &cmdLength);
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109 localComState = UART_CO2_IDLE;
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110 break;
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111 case UART_CO2_IDLE: if(externalInterface_GetCO2Scale() == 0.0) /* artifact from streaming mode => not needed for polling */
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112 {
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113 uartCo2_SendCmd(CO2CMD_GETSCALE, cmdString, &cmdLength);
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114 localComState = UART_CO2_SETUP;
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115 }
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116 else
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117 {
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118 uartCo2_SendCmd(CO2CMD_GETDATA, cmdString, &cmdLength);
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119 localComState = UART_CO2_OPERATING;
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120 }
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121 break;
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122 default: if(cmdLength != 0)
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123 {
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124 UART_SendCmdString(cmdString); /* resend last command */
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125 cmdLength = 0;
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126 }
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127 break;
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128 }
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129 lastComState = localComState;
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130 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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131 }
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132
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133 void uartCo2_ProcessData(uint8_t data)
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134 {
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135 static uint8_t dataType = 0;
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136 static uint32_t dataValue[3];
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137 static uint8_t dataIndex = 0;
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138 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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139 uartCO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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140
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141 if(rxState == CO2RX_Ready) /* identify data content */
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142 {
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143 switch(data)
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144 {
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145 case 'P':
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146 case 'G':
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147 case 'K':
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148 case 'l':
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149 case 'D':
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150 case 'Z':
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151 case '.': dataType = data;
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152 rxState = CO2RX_Data0;
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153 dataValue[0] = 0;
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154 dataIndex = 0;
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155 break;
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156 case '?': localComState = UART_CO2_ERROR;
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157 rxState = CO2RX_Ready;
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158 break;
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159 default: /* unknown or corrupted => ignore */
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160 break;
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161 }
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162 }
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163 else if((data >= '0') && (data <= '9'))
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164 {
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165 if((rxState >= CO2RX_Data0) && (rxState <= CO2RX_Data9))
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166 {
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167 dataValue[dataIndex] = dataValue[dataIndex] * 10 + (data - '0');
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168
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169 switch (dataType)
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170 {
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171 case 'G':
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172 case 'K':
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173 case 'l':
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174 case 'D':
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175 case 'Z':
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176 case '.':
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177 default: if((rxState == CO2RX_Data4))
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178 {
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179 rxState = CO2RX_DataComplete; /* just one value to be received */
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180 }
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181 else
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182 {
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183 rxState++;
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184 }
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185 break;
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186 case 'P': if(rxState == CO2RX_Data9) /* get second parameter */
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187 {
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188 rxState = CO2RX_DataComplete;
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189 }
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190 else
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191 {
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192 rxState++;
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193 }
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194 break;
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195 }
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196 }
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197 else /* protocol error data has max 5 digits */
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198 {
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199 if(rxState != CO2RX_DataComplete) /* commands will not answer with number values */
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200 {
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201 rxState = CO2RX_Ready;
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202 }
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203 }
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204 }
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205 else if((data == ' ') || (data == '\n')) /* Abort data detection */
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206 {
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207 if(rxState == CO2RX_DataComplete)
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208 {
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209 CO2Connected = 1;
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210 switch(localComState)
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211 {
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212 case UART_CO2_SETUP: if(dataType == '.')
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213 {
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214 localComState = UART_CO2_MODE;
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215 }
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216 break;
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217 case UART_CO2_MODE: if((dataType == 'K') && (dataValue[dataIndex] == 2))
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218 {
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219 localComState = UART_CO2_IDLE;
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220 }
a3f42192da0f Always use polling mode for CO2 operation:
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221 break;
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222 case UART_CO2_CALIBRATE_H: if((dataType == 'P') && (dataValue[0] == 10) && (dataValue[1] == 1))
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223 {
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224 localComState = UART_CO2_CALIBRATE_L;
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225 }
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226 else
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227 {
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228 localComState = UART_CO2_IDLE;
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229 }
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230 break;
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231 case UART_CO2_CALIBRATE_L: if((dataType == 'P') && (dataValue[0] == 11) && (dataValue[1] == 144))
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232 {
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233 localComState = UART_CO2_CALIBRATE;
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234 }
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235 else
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236 {
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237 localComState = UART_CO2_IDLE;
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238 }
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239 break;
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240 default: localComState = UART_CO2_IDLE;
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241 break;
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9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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242 }
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a3f42192da0f Always use polling mode for CO2 operation:
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243
798
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244 switch(dataType)
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245 {
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246 case 'D': externalInterface_SetCO2SignalStrength(dataValue[dataIndex]);
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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247 break;
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248 case 'l': LED_ZeroOffset = dataValue[dataIndex];
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249 break;
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250 case 'Z': externalInterface_SetCO2Value(dataValue[dataIndex]);
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251 break;
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252 case '.': externalInterface_SetCO2Scale(dataValue[dataIndex]);
798
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253 break;
842
c3dd461ca3f9 Migrated Sentinel protocol to new UART structure:
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254 default: rxState = CO2RX_Ready;
798
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255 break;
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256 }
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0b81ac558e89 Devbugfix UART buffer cleaning:
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257 rxState = CO2RX_Ready;
798
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258 }
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259 else /* multi parameter */
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260 {
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261 if(rxState == CO2RX_Data5)
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262 {
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263 switch(dataType)
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264 {
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265 case 'P': dataIndex++;
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266 dataValue[dataIndex] = 0;
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267 break;
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268 default:
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269 break;
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270 }
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271 }
8b97003dbb60 Improve CO2 calibration:
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272 }
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273 if((rxState != CO2RX_Data0) && (rxState != CO2RX_Data5)) /* reset state machine because message in wrong format */
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274 {
842
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275 rxState = CO2RX_Ready;
798
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276 }
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277 }
916
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
278 else
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
279 {
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
280 if((rxState >= CO2RX_Data0) && (rxState <= CO2RX_Data4))
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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281 {
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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282 rxState = CO2RX_Ready; /* numerical data expected => abort */
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283 }
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
284 }
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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285 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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286 }
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287
e9eba334b942 Migrated CO2 protocol implementation to new format:
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288 uint8_t uartCo2_isSensorConnected()
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289 {
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290 return CO2Connected;
e9eba334b942 Migrated CO2 protocol implementation to new format:
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291 }
e9eba334b942 Migrated CO2 protocol implementation to new format:
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292
e9eba334b942 Migrated CO2 protocol implementation to new format:
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293 #endif
e9eba334b942 Migrated CO2 protocol implementation to new format:
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294