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annotate Small_CPU/Src/externalInterface.c @ 728:5143e927219f

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Added sensor map to Firmware <=> RTE inferface: The sensor map contains a list of up to five sensors which may be connected to the external interface. The update includes the definition of the type as well as the data structure. to ensure compatibility the RTE and needed RTE version has been set to 3.0
author Ideenmodellierer
date Sat, 14 Jan 2023 20:41:36 +0100
parents 045ff7800501
children d646a0f724a7
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1 /**
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2 ******************************************************************************
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3 * @file externalInterface.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 07-Nov-2020
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7 * @brief Interface functionality to proceed external analog signal via i2c connection
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8 *
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9 @verbatim
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10 ==============================================================================
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11 ##### stm32f4xx_hal_i2c.c modification #####
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12 ==============================================================================
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13 The LTC2942 requires an repeated start condition without stop condition
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14 for data reception.
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15
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16 @endverbatim
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17 ******************************************************************************
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18 * @attention
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19 *
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20 * <h2><center>&copy; COPYRIGHT(c) 2014 heinrichs weikamp</center></h2>
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21 *
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22 ******************************************************************************
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23 */
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24 /* Includes ------------------------------------------------------------------*/
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25
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26 #include <math.h>
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27 #include <string.h>
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28 #include "i2c.h"
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29 #include "externalInterface.h"
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30 #include "scheduler.h"
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31 #include "uart.h"
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32 #include "data_exchange.h"
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33
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34 extern SGlobal global;
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35 extern UART_HandleTypeDef huart1;
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36
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37 #define ADC_ANSWER_LENGTH (5u) /* 3424 will provide addr + 4 data bytes */
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38 #define ADC_TIMEOUT (10u) /* conversion stuck for unknown reason => restart */
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39 #define ADC_REF_VOLTAGE_MV (2048.0f) /* reference voltage of MPC3424*/
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40
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41 #define ADC_START_CONVERSION (0x80)
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42 #define ADC_GAIN_4 (0x02)
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43 #define ADC_GAIN_4_VALUE (4.0f)
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44 #define ADC_GAIN_8 (0x03)
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45 #define ADC_GAIN_8_VALUE (8.0f)
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46 #define ADC_RESOLUTION_16BIT (0x08)
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47 #define ADC_RESOLUTION_16BIT_VALUE (16u)
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48 #define ADC_RESOLUTION_18BIT (0x0C)
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49 #define ADC_RESOLUTION_18BIT_VALUE (18u)
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50
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51 #define ANSWER_CONFBYTE_INDEX (4u)
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52
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53 static uint8_t activeChannel = 0; /* channel which is in request */
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54 static uint8_t recBuf[ADC_ANSWER_LENGTH];
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55 static uint8_t timeoutCnt = 0;
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56 static uint8_t externalInterfacePresent = 0;
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57
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58 float externalChannel_mV[MAX_ADC_CHANNEL];
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59 static uint8_t externalV33_On = 0;
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60 static uint8_t externalADC_On = 0;
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61 static uint8_t externalUART_Protocol = 0;
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62 static uint16_t externalCO2Value;
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63 static uint16_t externalCO2SignalStrength;
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64 static uint16_t externalCO2Status = 0;
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65
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66 static uint8_t sensorDataId = 0;
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67 static SSensorDataDiveO2 sensorDataDiveO2;
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68
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69
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70 void externalInterface_Init(void)
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71 {
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72 activeChannel = 0;
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73 timeoutCnt = 0;
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74 externalInterfacePresent = 0;
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75 if(externalInterface_StartConversion(activeChannel) == HAL_OK)
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76 {
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77 externalInterfacePresent = 1;
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78 global.deviceDataSendToMaster.hw_Info.extADC = 1;
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79 }
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80 global.deviceDataSendToMaster.hw_Info.checkADC = 1;
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81
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82 /* init data values */
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83 externalV33_On = 0;
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84 externalCO2Value = 0;
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85 externalCO2SignalStrength = 0;
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86 externalCO2Status = 0;
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87 }
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88
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89
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90 uint8_t externalInterface_StartConversion(uint8_t channel)
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91 {
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92 uint8_t retval = 0;
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93 uint8_t confByte = 0;
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94
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95 if(channel < MAX_ADC_CHANNEL)
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96 {
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97 confByte = ADC_START_CONVERSION | ADC_RESOLUTION_16BIT | ADC_GAIN_8;
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98 confByte |= channel << 5;
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99 retval = I2C_Master_Transmit(DEVICE_EXTERNAL_ADC, &confByte, 1);
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100 }
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101 return retval;
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102 }
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103
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104 /* Check if conversion is done and trigger measurement of next channel */
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105 uint8_t externalInterface_ReadAndSwitch()
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106 {
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107 uint8_t retval = EXTERNAL_ADC_NO_DATA;
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108
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109 if(externalInterfacePresent)
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110 {
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111 if(I2C_Master_Receive(DEVICE_EXTERNAL_ADC, recBuf, ADC_ANSWER_LENGTH) == HAL_OK)
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112 {
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113 if((recBuf[ANSWER_CONFBYTE_INDEX] & ADC_START_CONVERSION) == 0) /* !ready set => received data contains new value */
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114 {
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115 retval = activeChannel; /* return channel number providing new data */
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116 activeChannel++;
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117 if(activeChannel == MAX_ADC_CHANNEL)
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118 {
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119 if(externalUART_Protocol == (EXT_INTERFACE_UART_O2 >> 8)) /* mixed mode digital and analog o2 sensors => channel 0 is reserved for digital sensor */
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120 {
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121 activeChannel = 1;
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122 }
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123 else
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124 {
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125 activeChannel = 0;
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126 }
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127 }
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128 externalInterface_StartConversion(activeChannel);
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129 timeoutCnt = 0;
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130 }
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131 else
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132 {
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133 if(timeoutCnt++ >= ADC_TIMEOUT)
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134 {
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135 externalInterface_StartConversion(activeChannel);
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136 timeoutCnt = 0;
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137 }
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138 }
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139 }
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140 else /* take also i2c bus disturb into account */
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141 {
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142 if(timeoutCnt++ >= ADC_TIMEOUT)
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143 {
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144 externalInterface_StartConversion(activeChannel);
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145 timeoutCnt = 0;
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146 }
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147 }
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148 }
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149 return retval;
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150 }
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151 float externalInterface_CalculateADCValue(uint8_t channel)
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152 {
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153 int32_t rawvalue = 0;
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154 float retValue = 0.0;
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155 if(channel < MAX_ADC_CHANNEL)
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156 {
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157
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158 rawvalue = ((recBuf[0] << 16) | (recBuf[1] << 8) | (recBuf[2]));
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159
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160 switch(recBuf[3] & 0x0C) /* confbyte => Resolution bits*/
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161 {
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162 case ADC_RESOLUTION_16BIT: rawvalue = rawvalue >> 8; /* only 2 databytes received shift out confbyte*/
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163 if(rawvalue & (0x1 << (ADC_RESOLUTION_16BIT_VALUE-1))) /* MSB set => negative number */
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164 {
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165 rawvalue |= 0xFFFF0000; /* set MSB for int32 */
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166 }
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167 else
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168 {
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169 rawvalue &= 0x0000FFFF;
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170 }
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171 externalChannel_mV[channel] = ADC_REF_VOLTAGE_MV * 2.0 / (float) pow(2,ADC_RESOLUTION_16BIT_VALUE); /* calculate bit resolution */
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172 break;
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173 case ADC_RESOLUTION_18BIT: if(rawvalue & (0x1 << (ADC_RESOLUTION_18BIT_VALUE-1))) /* MSB set => negative number */
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174 {
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175 rawvalue |= 0xFFFE0000; /* set MSB for int32 */
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176 }
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177 externalChannel_mV[channel] = ADC_REF_VOLTAGE_MV * 2.0 / (float) pow(2,ADC_RESOLUTION_18BIT_VALUE); /* calculate bit resolution */
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178 break;
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179 default: rawvalue = 0;
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180 break;
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181 }
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182 externalChannel_mV[channel] = externalChannel_mV[channel] * rawvalue / ADC_GAIN_8_VALUE;
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183 retValue = externalChannel_mV[channel];
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184 }
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185 return retValue;
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186 }
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187 float getExternalInterfaceChannel(uint8_t channel)
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188 {
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189 float retval = 0;
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190
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191 if(channel < MAX_ADC_CHANNEL)
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192 {
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193 retval = externalChannel_mV[channel];
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194 }
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195 return retval;
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196 }
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197
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198 uint8_t setExternalInterfaceChannel(uint8_t channel, float value)
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199 {
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200 uint8_t retval = 0;
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201
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202 if(channel < MAX_ADC_CHANNEL)
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203 {
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204 externalChannel_mV[channel] = value;
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205 retval = 1;
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206 }
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207 return retval;
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208 }
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209
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210 void externalInterface_InitPower33(void)
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211 {
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212 GPIO_InitTypeDef GPIO_InitStructure;
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213
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214 GPIO_InitStructure.Pin = GPIO_PIN_7;
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215 GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
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216 GPIO_InitStructure.Pull = GPIO_PULLUP;
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217 GPIO_InitStructure.Speed = GPIO_SPEED_LOW;
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218 HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
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219 HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,GPIO_PIN_SET);
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220 }
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221
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222
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223 uint8_t externalInterface_isEnabledPower33()
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224 {
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225 return externalV33_On;
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226 }
691
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227
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228 uint8_t externalInterface_isEnabledADC()
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229 {
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230 return externalADC_On;
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231 }
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232
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233 uint8_t externalInterface_GetUARTProtocol()
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234 {
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235 return externalUART_Protocol;
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236 }
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237
662
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238 void externalInterface_SwitchPower33(uint8_t state)
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239 {
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240 if(state != externalV33_On)
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241 {
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242 if(state)
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243 {
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244 HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,GPIO_PIN_RESET);
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245 externalV33_On = 1;
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246 }
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247 else
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248 {
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249 HAL_GPIO_WritePin(GPIOC,GPIO_PIN_7,GPIO_PIN_SET);
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250 externalV33_On = 0;
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251 externalInterface_SetCO2Value(0);
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252 externalInterface_SetCO2SignalStrength(0);
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253 }
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254 }
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255 }
691
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256 void externalInterface_SwitchADC(uint8_t state)
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257 {
714
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258 uint8_t loop = 0;
691
52d68cf9994c Improvment external interface usage:
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259 if((state) && (externalInterfacePresent))
52d68cf9994c Improvment external interface usage:
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260 {
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261 externalInterface_StartConversion(activeChannel);
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262 externalADC_On = 1;
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263 }
52d68cf9994c Improvment external interface usage:
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264 else
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265 {
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266 externalADC_On = 0;
714
045ff7800501 Added customizable data area for specific sensor data:
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267 for(loop = 0; loop < MAX_ADC_CHANNEL; loop++)
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268 {
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269 externalChannel_mV[loop] = 0;
045ff7800501 Added customizable data area for specific sensor data:
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270 }
691
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271 }
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272 }
662
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273
704
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274 void externalInterface_SwitchUART(uint8_t protocol)
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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275 {
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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276 if(protocol < 0x08)
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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277 {
714
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278 sensorDataId = 0;
704
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279 externalUART_Protocol = protocol;
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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280 MX_USART1_UART_DeInit();
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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281 if( protocol != 0)
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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282 {
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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283 MX_USART1_UART_Init();
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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284 }
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285 }
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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286 }
f1b40364b0af Added protocol functions for UART DiveO2 sensor:
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287
662
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288 void externalInterface_SetCO2Value(uint16_t CO2_ppm)
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289 {
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290 externalCO2Value = CO2_ppm;
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291 }
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292
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293 void externalInterface_SetCO2SignalStrength(uint16_t LED_qa)
1b995079c045 PSCR Mode
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294 {
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295 externalCO2SignalStrength = LED_qa;
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296 }
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297
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298 uint16_t externalInterface_GetCO2Value(void)
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299 {
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300 return externalCO2Value;
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301 }
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302
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303 uint16_t externalInterface_GetCO2SignalStrength(void)
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304 {
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305 return externalCO2SignalStrength;
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306 }
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307
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308
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309 void externalInterface_SetCO2State(uint16_t state)
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310 {
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311 externalCO2Status = state;
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312 }
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313
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314 uint16_t externalInterface_GetCO2State(void)
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315 {
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316 return externalCO2Status;
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317 }
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318
714
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319
045ff7800501 Added customizable data area for specific sensor data:
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320 uint8_t externalInterface_GetSensorData(uint8_t* pDataStruct)
045ff7800501 Added customizable data area for specific sensor data:
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321 {
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
322
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
323 if((pDataStruct != NULL) && sensorDataId != 0)
045ff7800501 Added customizable data area for specific sensor data:
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324 {
045ff7800501 Added customizable data area for specific sensor data:
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325 memcpy(pDataStruct, &sensorDataDiveO2, sizeof(sensorDataDiveO2));
045ff7800501 Added customizable data area for specific sensor data:
Ideenmodellierer
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326 }
045ff7800501 Added customizable data area for specific sensor data:
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327 return sensorDataId;
045ff7800501 Added customizable data area for specific sensor data:
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328 }
045ff7800501 Added customizable data area for specific sensor data:
Ideenmodellierer
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329
045ff7800501 Added customizable data area for specific sensor data:
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330 void externalInterface_SetSensorData(uint8_t dataId, uint8_t* pDataStruct)
045ff7800501 Added customizable data area for specific sensor data:
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331 {
045ff7800501 Added customizable data area for specific sensor data:
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332 if(pDataStruct != NULL)
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
333 {
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
334 if(dataId != 0)
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
335 {
045ff7800501 Added customizable data area for specific sensor data:
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336 memcpy(&sensorDataDiveO2, pDataStruct, sizeof(sensorDataDiveO2));
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
337 }
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
338 else
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
339 {
045ff7800501 Added customizable data area for specific sensor data:
Ideenmodellierer
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diff changeset
340 memset(&sensorDataDiveO2,0,sizeof(sensorDataDiveO2));
045ff7800501 Added customizable data area for specific sensor data:
Ideenmodellierer
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diff changeset
341 }
045ff7800501 Added customizable data area for specific sensor data:
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diff changeset
342 sensorDataId = dataId;
045ff7800501 Added customizable data area for specific sensor data:
Ideenmodellierer
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diff changeset
343 }
045ff7800501 Added customizable data area for specific sensor data:
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344 }
045ff7800501 Added customizable data area for specific sensor data:
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345
662
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346 void externalInterface_ExecuteCmd(uint16_t Cmd)
1b995079c045 PSCR Mode
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diff changeset
347 {
1b995079c045 PSCR Mode
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diff changeset
348 char cmdString[10];
1b995079c045 PSCR Mode
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diff changeset
349 uint8_t cmdLength = 0;
1b995079c045 PSCR Mode
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350
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351 switch(Cmd & 0x00FF) /* lower byte is reserved for commands */
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352 {
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353 case EXT_INTERFACE_CO2_CALIB: cmdLength = snprintf(cmdString, 10, "G\r\n");
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354 break;
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355 default:
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356 break;
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357 }
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358 if(cmdLength != 0)
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359 {
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360 HAL_UART_Transmit(&huart1,(uint8_t*)cmdString,cmdLength,10);
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361 }
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362 return;
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363 }
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364