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annotate Small_CPU/Src/uartProtocol_Co2.c @ 976:0b81ac558e89 Evo_2_23

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Devbugfix UART buffer cleaning: In the previous version a buffer cleaning function was used which resets the ringbuffer read index. As result the processing of data was stopped until the DMA write comes to the index 0. When reaching it the complete buffer was proceeded including possibly invalid data. The usage of the cleanbuffer function was replaced by the flush buffer function (meaning the data is discarded but the data index is maintained). There was already a function for this. Because the function was 99% the same as the read function, it was integrated into the ReadData function. Calling the function with parameter flush = 1 will result in a buffer flush. The workaround of the previous revision was updated to only be applied in case a DiveO2 sensor is operated in stand alone mode.
author Ideenmodellierer
date Wed, 29 Jan 2025 17:21:20 +0100 (7 weeks ago)
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 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, 10, "K 2\r\n");
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46 break;
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47 case CO2CMD_MODE_STREAM: *cmdLength = snprintf((char*)cmdString, 10, "K 1\r\n");
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48 break;
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49 case CO2CMD_CALIBRATE: *cmdLength = snprintf((char*)cmdString, 10, "G\r\n");
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50 break;
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51 case CO2CMD_GETDATA: *cmdLength = snprintf((char*)cmdString, 10, "Q\r\n");
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52 break;
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53 case CO2CMD_GETSCALE: *cmdLength = snprintf((char*)cmdString, 10, ".\r\n");
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54 break;
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55 default: *cmdLength = 0;
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56 break;
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57 }
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58 if(cmdLength != 0)
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59 {
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60 UART_SendCmdString(cmdString);
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61 }
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62 }
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63
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64
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65 void uartCo2_Control(void)
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66 {
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67 static uint8_t cmdString[10];
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68 static uint8_t cmdLength = 0;
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69 static uint8_t lastComState = 0;
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70
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71 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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72 uartCO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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73
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74 uint8_t *pmap = externalInterface_GetSensorMapPointer(0);
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75
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76
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77 if(localComState == UART_CO2_ERROR)
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78 {
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79 localComState = lastComState;
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80 }
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81
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82 if(localComState == UART_CO2_INIT)
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83 {
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84 CO2Connected = 0;
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85 externalInterface_SetCO2Scale(0.0);
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86 UART_ReadData(SENSOR_CO2, 1); /* flush buffer */
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87 UART_StartDMA_Receiption(&Uart1Ctrl);
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88 localComState = UART_CO2_SETUP;
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89 }
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90 if(localComState == UART_CO2_SETUP)
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91 {
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92 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 localComState = UART_CO2_IDLE;
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99 }
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100 }
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101 else
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102 {
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103 if(localComState == UART_CO2_CALIBRATE)
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104 {
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105 uartCo2_SendCmd(CO2CMD_CALIBRATE, cmdString, &cmdLength);
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106 localComState = UART_CO2_IDLE;
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107 }
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108 else if(pmap[EXT_INTERFACE_SENSOR_CNT-1] == SENSOR_MUX) /* sensor is working in polling mode if mux is connected to avoid interference with other sensors */
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109 {
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110 //if(cmdLength == 0) /* poll data */
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111 if(localComState == UART_CO2_IDLE)
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112 {
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113 if(externalInterface_GetCO2Scale() == 0.0)
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114 {
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115 uartCo2_SendCmd(CO2CMD_GETSCALE, cmdString, &cmdLength);
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116 localComState = UART_CO2_SETUP;
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117 }
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118 else
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119 {
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120 uartCo2_SendCmd(CO2CMD_GETDATA, cmdString, &cmdLength);
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121 localComState = UART_CO2_OPERATING;
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122 }
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123 }
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124 else /* resend last command */
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125 {
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126 UART_SendCmdString(cmdString);
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127 cmdLength = 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 localComState = UART_CO2_OPERATING; /* sensor in streaming mode if not connected to mux => operating */
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133 UART_StartDMA_Receiption(&Uart1Ctrl);
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134 }
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135 }
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136 lastComState = localComState;
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137 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
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138 }
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139
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140
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141 void uartCo2_ProcessData(uint8_t data)
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142 {
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143 static uint8_t dataType = 0;
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144 static uint32_t dataValue = 0;
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145 uint8_t activeSensor = externalInterface_GetActiveUartSensor();
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146 uartCO2Status_t localComState = externalInterface_GetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET);
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147
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148 if(rxState == CO2RX_Ready) /* identify data content */
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149 {
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150 switch(data)
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151 {
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152 case 'G':
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153 case 'l':
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154 case 'D':
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155 case 'Z':
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156 case '.': dataType = data;
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157 rxState = CO2RX_Data0;
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158 dataValue = 0;
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159 break;
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160 case '?': localComState = UART_CO2_ERROR;
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161 break;
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162 default: /* unknown or corrupted => ignore */
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163 break;
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164 }
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165 }
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166 else if((data >= '0') && (data <= '9'))
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167 {
842
c3dd461ca3f9 Migrated Sentinel protocol to new UART structure:
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168 if((rxState >= CO2RX_Data0) && (rxState <= CO2RX_Data4))
798
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169 {
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170 dataValue = dataValue * 10 + (data - '0');
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171 rxState++;
842
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172 if(rxState == CO2RX_Data5)
798
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173 {
842
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174 rxState = CO2RX_DataComplete;
798
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175 }
e9eba334b942 Migrated CO2 protocol implementation to new format:
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176 }
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177 else /* protocol error data has max 5 digits */
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178 {
842
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179 if(rxState != CO2RX_DataComplete) /* commands will not answer with number values */
809
9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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180 {
842
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181 rxState = CO2RX_Ready;
809
9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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182 }
798
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183 }
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184 }
916
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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185 else if((data == ' ') || (data == '\n')) /* Abort data detection */
798
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186 {
842
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187 if(rxState == CO2RX_DataComplete)
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188 {
809
9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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189 CO2Connected = 1;
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190 if(localComState == UART_CO2_SETUP)
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191 {
9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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192 if(dataType == '.')
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193 {
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194 localComState = UART_CO2_IDLE;
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195 }
9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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diff changeset
196 }
9602a7338f28 DevBugfix CO2 sensor in streaming mode:
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diff changeset
197 else
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198 {
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199 localComState = UART_CO2_IDLE;
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200 }
798
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201 if(externalInterface_GetCO2State() == 0)
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202 {
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203 externalInterface_SetCO2State(EXT_INTERFACE_33V_ON);
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204 }
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205 switch(dataType)
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206 {
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207 case 'D': externalInterface_SetCO2SignalStrength(dataValue);
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208 break;
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209 case 'l': LED_ZeroOffset = dataValue;
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210 break;
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211 case 'Z': externalInterface_SetCO2Value(dataValue);
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212 break;
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213 case '.': externalInterface_SetCO2Scale(dataValue);
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214 break;
842
c3dd461ca3f9 Migrated Sentinel protocol to new UART structure:
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215 default: rxState = CO2RX_Ready;
798
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216 break;
e9eba334b942 Migrated CO2 protocol implementation to new format:
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217 }
976
0b81ac558e89 Devbugfix UART buffer cleaning:
Ideenmodellierer
parents: 932
diff changeset
218 rxState = CO2RX_Ready;
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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219 }
842
c3dd461ca3f9 Migrated Sentinel protocol to new UART structure:
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diff changeset
220 if(rxState != CO2RX_Data0) /* reset state machine because message in wrong format */
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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221 {
842
c3dd461ca3f9 Migrated Sentinel protocol to new UART structure:
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parents: 809
diff changeset
222 rxState = CO2RX_Ready;
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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223 }
e9eba334b942 Migrated CO2 protocol implementation to new format:
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224 }
916
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
Ideenmodellierer
parents: 842
diff changeset
225 else
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
226 {
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
227 if((rxState >= CO2RX_Data0) && (rxState <= CO2RX_Data4))
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
228 {
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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diff changeset
229 rxState = CO2RX_Ready; /* numerical data expected => abort */
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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parents: 842
diff changeset
230 }
4832981f9af8 External sensor UART: Switch to DMA TX transfers:
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parents: 842
diff changeset
231 }
798
e9eba334b942 Migrated CO2 protocol implementation to new format:
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232 externalInterface_SetSensorState(activeSensor + EXT_INTERFACE_MUX_OFFSET,localComState);
e9eba334b942 Migrated CO2 protocol implementation to new format:
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233 }
e9eba334b942 Migrated CO2 protocol implementation to new format:
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234
e9eba334b942 Migrated CO2 protocol implementation to new format:
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235 uint8_t uartCo2_isSensorConnected()
e9eba334b942 Migrated CO2 protocol implementation to new format:
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236 {
e9eba334b942 Migrated CO2 protocol implementation to new format:
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237 return CO2Connected;
e9eba334b942 Migrated CO2 protocol implementation to new format:
Ideenmodellierer
parents:
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238 }
e9eba334b942 Migrated CO2 protocol implementation to new format:
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239
e9eba334b942 Migrated CO2 protocol implementation to new format:
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240 #endif
e9eba334b942 Migrated CO2 protocol implementation to new format:
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241