Thu, 06 Apr 2023 20:53:06 +0200
Set the new measured deep sleep current consumption. This is half of the Wemos D1 system.
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1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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1 | /* |
1c9894662795
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2 | * Copyright (c) 2017 Gunar Schorcht <https://github.com/gschorcht> |
1c9894662795
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3 | * Copyright (c) 2019 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
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4 | * |
1c9894662795
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5 | * Redistribution and use in source and binary forms, with or without |
1c9894662795
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6 | * modification, are permitted provided that the following conditions are met: |
1c9894662795
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7 | * |
1c9894662795
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8 | * 1. Redistributions of source code must retain the above copyright notice, |
1c9894662795
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9 | * this list of conditions and the following disclaimer. |
1c9894662795
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10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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11 | * this list of conditions and the following disclaimer in the documentation |
1c9894662795
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12 | * and/or other materials provided with the distribution. |
1c9894662795
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13 | * 3. Neither the name of the copyright holder nor the names of itscontributors |
1c9894662795
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14 | * may be used to endorse or promote products derived from this software without |
1c9894662795
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15 | * specific prior written permission. |
1c9894662795
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16 | * |
1c9894662795
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17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
1c9894662795
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18 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
1c9894662795
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19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
1c9894662795
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20 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
1c9894662795
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21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
1c9894662795
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22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
1c9894662795
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23 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
1c9894662795
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24 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
1c9894662795
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25 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
1c9894662795
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26 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
1c9894662795
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27 | */ |
1c9894662795
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28 | |
1c9894662795
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29 | /** |
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30 | * @file bme680.h |
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31 | * @defgroup bme680 bme680 |
1c9894662795
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32 | * @{ |
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33 | * |
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34 | * ESP-IDF driver for BME680 digital environmental sensor |
1c9894662795
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35 | * |
1c9894662795
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36 | * Forked from <https://github.com/gschorcht/bme680-esp-idf> |
1c9894662795
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37 | * |
1c9894662795
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38 | * Copyright (c) 2017 Gunar Schorcht <https://github.com/gschorcht>\n |
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39 | * Copyright (c) 2019 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
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40 | * |
1c9894662795
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41 | * BSD Licensed as described in the file LICENSE |
1c9894662795
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42 | */ |
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43 | #ifndef __BME680_H__ |
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44 | #define __BME680_H__ |
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45 | |
1c9894662795
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46 | #include <stdbool.h> |
1c9894662795
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47 | #include <i2cdev.h> |
1c9894662795
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48 | #include <esp_err.h> |
1c9894662795
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49 | |
1c9894662795
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50 | #ifdef __cplusplus |
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51 | extern "C" { |
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52 | #endif |
1c9894662795
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53 | |
1c9894662795
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54 | #define BME680_I2C_ADDR_0 0x76 |
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55 | #define BME680_I2C_ADDR_1 0x77 |
1c9894662795
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56 | |
1c9894662795
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57 | #define BME680_MAX_OVERFLOW_VAL INT32_C(0x40000000) // overflow value used in pressure calculation (bme680_convert_pressure) |
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58 | |
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59 | #define BME680_HEATER_TEMP_MIN 200 //!< min. 200 degree Celsius |
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60 | #define BME680_HEATER_TEMP_MAX 400 //!< max. 200 degree Celsius |
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61 | #define BME680_HEATER_PROFILES 10 //!< max. 10 heater profiles 0 ... 9 |
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62 | #define BME680_HEATER_NOT_USED -1 //!< heater not used profile |
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63 | |
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64 | /** |
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65 | * Fixed point sensor values (fixed THPG values) |
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66 | */ |
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67 | typedef struct |
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68 | { |
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69 | int16_t temperature; //!< temperature in degree C * 100 (Invalid value INT16_MIN) |
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70 | uint32_t pressure; //!< barometric pressure in Pascal (Invalid value 0) |
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71 | uint32_t humidity; //!< relative humidity in % * 1000 (Invalid value 0) |
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72 | uint32_t gas_resistance; //!< gas resistance in Ohm (Invalid value 0) |
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73 | } bme680_values_fixed_t; |
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74 | |
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75 | /** |
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76 | * Floating point sensor values (real THPG values) |
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77 | */ |
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78 | typedef struct |
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79 | { |
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80 | float temperature; //!< temperature in degree C (Invalid value -327.68) |
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81 | float pressure; //!< barometric pressure in hPascal (Invalid value 0.0) |
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82 | float humidity; //!< relative humidity in % (Invalid value 0.0) |
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83 | float gas_resistance; //!< gas resistance in Ohm (Invalid value 0.0) |
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84 | } bme680_values_float_t; |
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85 | |
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86 | /** |
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87 | * Filter size |
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88 | */ |
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89 | typedef enum { |
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90 | BME680_IIR_SIZE_0 = 0, //!< Filter is not used |
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91 | BME680_IIR_SIZE_1, |
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92 | BME680_IIR_SIZE_3, |
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93 | BME680_IIR_SIZE_7, |
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94 | BME680_IIR_SIZE_15, |
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95 | BME680_IIR_SIZE_31, |
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96 | BME680_IIR_SIZE_63, |
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97 | BME680_IIR_SIZE_127 |
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98 | } bme680_filter_size_t; |
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99 | |
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100 | /** |
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101 | * Oversampling rate |
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102 | */ |
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103 | typedef enum { |
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104 | BME680_OSR_NONE = 0, //!< Measurement is skipped, output values are invalid |
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105 | BME680_OSR_1X, //!< Default oversampling rates |
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106 | BME680_OSR_2X, |
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107 | BME680_OSR_4X, |
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108 | BME680_OSR_8X, |
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109 | BME680_OSR_16X |
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110 | } bme680_oversampling_rate_t; |
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111 | |
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112 | /** |
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113 | * @brief Sensor parameters that configure the TPHG measurement cycle |
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114 | * |
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115 | * T - temperature measurement |
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116 | * P - pressure measurement |
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117 | * H - humidity measurement |
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118 | * G - gas measurement |
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119 | */ |
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120 | typedef struct |
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121 | { |
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122 | bme680_oversampling_rate_t osr_temperature; //!< T oversampling rate (default `BME680_OSR_1X`) |
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123 | bme680_oversampling_rate_t osr_pressure; //!< P oversampling rate (default `BME680_OSR_1X`) |
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124 | bme680_oversampling_rate_t osr_humidity; //!< H oversampling rate (default `BME680_OSR_1X`) |
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125 | bme680_filter_size_t filter_size; //!< IIR filter size (default `BME680_IIR_SIZE_3`) |
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126 | |
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127 | int8_t heater_profile; //!< Heater profile used (default 0) |
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128 | uint16_t heater_temperature[10]; //!< Heater temperature for G (default 320) |
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129 | uint16_t heater_duration[10]; //!< Heater duration for G (default 150) |
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130 | |
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131 | int8_t ambient_temperature; //!< Ambient temperature for G (default 25) |
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132 | } bme680_settings_t; |
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133 | |
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134 | /** |
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135 | * @brief Data structure for calibration parameters |
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136 | * |
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137 | * These calibration parameters are used in compensation algorithms to convert |
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138 | * raw sensor data to measurement results. |
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139 | */ |
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140 | typedef struct |
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141 | { |
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142 | uint16_t par_t1; //!< calibration data for temperature compensation |
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143 | int16_t par_t2; |
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144 | int8_t par_t3; |
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145 | |
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146 | uint16_t par_p1; //!< calibration data for pressure compensation |
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147 | int16_t par_p2; |
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148 | int8_t par_p3; |
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149 | int16_t par_p4; |
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150 | int16_t par_p5; |
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151 | int8_t par_p7; |
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152 | int8_t par_p6; |
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153 | int16_t par_p8; |
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154 | int16_t par_p9; |
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155 | uint8_t par_p10; |
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156 | |
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157 | uint16_t par_h1; //!< calibration data for humidity compensation |
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158 | uint16_t par_h2; |
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159 | int8_t par_h3; |
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160 | int8_t par_h4; |
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161 | int8_t par_h5; |
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162 | uint8_t par_h6; |
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163 | int8_t par_h7; |
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164 | |
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165 | int8_t par_gh1; //!< calibration data for gas compensation |
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166 | int16_t par_gh2; |
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167 | int8_t par_gh3; |
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168 | |
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169 | int32_t t_fine; //!< temperature correction factor for P and G |
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170 | uint8_t res_heat_range; |
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171 | int8_t res_heat_val; |
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172 | int8_t range_sw_err; |
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173 | } bme680_calib_data_t; |
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174 | |
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175 | /** |
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176 | * BME680 sensor device data structure type |
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177 | */ |
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178 | typedef struct |
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179 | { |
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180 | i2c_dev_t i2c_dev; //!< I2C device descriptor |
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181 | |
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182 | bool meas_started; //!< Indicates whether measurement started |
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183 | uint8_t meas_status; //!< Last sensor status (for internal use only) |
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184 | |
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185 | bme680_settings_t settings; //!< Sensor settings |
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186 | bme680_calib_data_t calib_data; //!< Calibration data of the sensor |
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187 | } bme680_t; |
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188 | |
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189 | /** |
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190 | * @brief Initialize device descriptor |
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191 | * |
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192 | * @param dev Device descriptor |
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193 | * @param addr BME680 address |
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194 | * @param port I2C port number |
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195 | * @param sda_gpio GPIO pin for SDA |
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196 | * @param scl_gpio GPIO pin for SCL |
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197 | * @return `ESP_OK` on success |
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198 | */ |
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199 | esp_err_t bme680_init_desc(bme680_t *dev, uint8_t addr, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio); |
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200 | |
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201 | /** |
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202 | * @brief Free device descriptor |
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203 | * |
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204 | * @param dev Device descriptor |
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205 | * @return `ESP_OK` on success |
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206 | */ |
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207 | esp_err_t bme680_free_desc(bme680_t *dev); |
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208 | |
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209 | /** |
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210 | * @brief Initialize a BME680 sensor |
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211 | * |
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212 | * The function initializes the sensor device data structure, probes the |
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213 | * sensor, soft resets the sensor, and configures the sensor with the |
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214 | * the following default settings: |
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215 | * |
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216 | * - Oversampling rate for temperature, pressure, humidity is osr_1x |
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217 | * - Filter size for pressure and temperature is iir_size 3 |
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218 | * - Heater profile 0 with 320 degree C and 150 ms duration |
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219 | * |
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220 | * The sensor must be connected to an I2C bus. |
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221 | * |
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222 | * @param dev Device descriptor |
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223 | * @return `ESP_OK` on success |
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224 | */ |
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225 | esp_err_t bme680_init_sensor(bme680_t *dev); |
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226 | |
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227 | /** |
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228 | * @brief Force one single TPHG measurement |
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229 | * |
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230 | * The function triggers the sensor to start one THPG measurement cycle. |
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231 | * Parameters for the measurement like oversampling rates, IIR filter sizes |
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232 | * and heater profile can be configured before. |
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233 | * |
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234 | * Once the TPHG measurement is started, the user task has to wait for the |
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235 | * results. The duration of the TPHG measurement can be determined with |
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236 | * function *bme680_get_measurement_duration*. |
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237 | * |
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238 | * @param dev Device descriptor |
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239 | * @return `ESP_OK` on success |
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240 | */ |
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241 | esp_err_t bme680_force_measurement(bme680_t *dev); |
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242 | |
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243 | /** |
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244 | * @brief Get estimated duration of a TPHG measurement |
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245 | * |
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246 | * The function returns an estimated duration of the TPHG measurement cycle |
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247 | * in RTOS ticks for the current configuration of the sensor. |
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248 | * |
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249 | * This duration is the time required by the sensor for one TPHG measurement |
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250 | * until the results are available. It strongly depends on which measurements |
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251 | * are performed in the THPG measurement cycle and what configuration |
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252 | * parameters were set. It can vary from 1 RTOS (10 ms) tick up to 4500 RTOS |
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253 | * ticks (4.5 seconds). |
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254 | * |
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255 | * If the measurement configuration is not changed, the duration can be |
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256 | * considered as constant. |
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257 | * |
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258 | * @param dev Device descriptor |
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259 | * @param[out] duration Duration of TPHG measurement cycle in ticks or 0 on error |
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260 | * @return `ESP_OK` on success |
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261 | */ |
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262 | esp_err_t bme680_get_measurement_duration(const bme680_t *dev, uint32_t *duration); |
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263 | |
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264 | /** |
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265 | * @brief Get the measurement status |
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266 | * |
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267 | * The function can be used to test whether a measurement that was started |
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268 | * before is still running. |
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269 | * |
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270 | * @param dev Device descriptor |
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271 | * @param[out] busy true if measurement is still running or false otherwise |
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272 | * @return `ESP_OK` on success |
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273 | */ |
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274 | esp_err_t bme680_is_measuring(bme680_t *dev, bool *busy); |
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275 | |
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276 | /** |
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277 | * @brief Get results of a measurement in fixed point representation |
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278 | * |
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279 | * The function returns the results of a TPHG measurement that has been |
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280 | * started before. If the measurement is still running, the function fails |
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281 | * and returns invalid values (see type declaration). |
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282 | * |
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283 | * @param dev Device descriptor |
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284 | * @param[out] results pointer to a data structure that is filled with results |
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285 | * @return `ESP_OK` on success |
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286 | */ |
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287 | esp_err_t bme680_get_results_fixed(bme680_t *dev, bme680_values_fixed_t *results); |
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288 | |
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289 | /** |
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290 | * @brief Get results of a measurement in floating point representation |
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291 | * |
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292 | * The function returns the results of a TPHG measurement that has been |
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293 | * started before. If the measurement is still running, the function fails |
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294 | * and returns invalid values (see type declaration). |
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295 | * |
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296 | * @param dev Device descriptor |
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297 | * @param[out] results pointer to a data structure that is filled with results |
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298 | * @return `ESP_OK` on success |
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299 | */ |
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300 | esp_err_t bme680_get_results_float(bme680_t *dev, bme680_values_float_t *results); |
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301 | |
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302 | /** |
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303 | * @brief Start a measurement, wait and return the results (fixed point) |
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304 | * |
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305 | * This function is a combination of functions above. For convenience it |
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306 | * starts a TPHG measurement using ::bme680_force_measurement(), then it waits |
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307 | * the measurement duration for the results using `vTaskDelay()` and finally it |
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308 | * returns the results using function ::bme680_get_results_fixed(). |
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309 | * |
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310 | * Note: Since the calling task is delayed using function `vTaskDelay()`, this |
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311 | * function must not be used when it is called from a software timer callback |
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312 | * function. |
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313 | * |
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314 | * @param dev Device descriptor |
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315 | * @param[out] results pointer to a data structure that is filled with results |
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316 | * @return `ESP_OK` on success |
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317 | */ |
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318 | esp_err_t bme680_measure_fixed(bme680_t *dev, bme680_values_fixed_t *results); |
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319 | |
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320 | /** |
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321 | * @brief Start a measurement, wait and return the results (floating point) |
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322 | * |
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323 | * This function is a combination of functions above. For convenience it |
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324 | * starts a TPHG measurement using ::bme680_force_measurement(), then it waits |
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325 | * the measurement duration for the results using `vTaskDelay` and finally it |
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326 | * returns the results using function ::bme680_get_results_float(). |
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327 | * |
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328 | * Note: Since the calling task is delayed using function `vTaskDelay()`, this |
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329 | * function must not be used when it is called from a software timer callback |
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330 | * function. |
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331 | * |
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332 | * @param dev Device descriptor |
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333 | * @param[out] results pointer to a data structure that is filled with results |
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334 | * @return `ESP_OK` on success |
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335 | */ |
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336 | esp_err_t bme680_measure_float(bme680_t *dev, bme680_values_float_t *results); |
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337 | |
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338 | /** |
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339 | * @brief Set the oversampling rates for measurements |
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340 | * |
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341 | * The BME680 sensor allows to define individual oversampling rates for |
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342 | * the measurements of temperature, pressure and humidity. Using an |
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343 | * oversampling rate of *osr*, the resolution of raw sensor data can be |
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344 | * increased by ld(*osr*) bits. |
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345 | * |
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346 | * Possible oversampling rates are 1x (default), 2x, 4x, 8x, 16x, see type |
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347 | * ::bme680_oversampling_rate_t. The default oversampling rate is 1. |
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348 | * |
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349 | * Please note: Use ::BME680_OSR_NONE to skip the corresponding measurement. |
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350 | * |
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351 | * @param dev Device descriptor |
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352 | * @param osr_t oversampling rate for temperature measurements |
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353 | * @param osr_p oversampling rate for pressure measurements |
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354 | * @param osr_h oversampling rate for humidity measurements |
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355 | * @return `ESP_OK` on success |
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356 | */ |
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357 | esp_err_t bme680_set_oversampling_rates(bme680_t *dev, bme680_oversampling_rate_t osr_t, |
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358 | bme680_oversampling_rate_t osr_p, bme680_oversampling_rate_t osr_h); |
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359 | |
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360 | /** |
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361 | * @brief Set the size of the IIR filter |
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362 | * |
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363 | * The sensor integrates an internal IIR filter (low pass filter) to reduce |
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364 | * short-term changes in sensor output values caused by external disturbances. |
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365 | * It effectively reduces the bandwidth of the sensor output values. |
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366 | * |
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367 | * The filter can optionally be used for pressure and temperature data that |
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368 | * are subject to many short-term changes. Using the IIR filter, increases the |
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369 | * resolution of pressure and temperature data to 20 bit. Humidity and gas |
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370 | * inside the sensor does not fluctuate rapidly and does not require such a |
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371 | * low pass filtering. |
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372 | * |
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373 | * The default filter size is 3 (::BME680_IIR_SIZE_3). |
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374 | * |
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375 | * Please note: If the size of the filter is 0, the filter is not used. |
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376 | * |
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377 | * @param dev Device descriptor |
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378 | * @param size IIR filter size |
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379 | * @return `ESP_OK` on success |
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380 | */ |
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381 | esp_err_t bme680_set_filter_size(bme680_t *dev, bme680_filter_size_t size); |
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382 | |
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383 | /** |
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384 | * @brief Set a heater profile for gas measurements |
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385 | * |
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386 | * The sensor integrates a heater for the gas measurement. Parameters for this |
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387 | * heater are defined by so called heater profiles. The sensor supports up to |
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388 | * 10 heater profiles, which are numbered from 0 to 9. Each profile consists of |
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389 | * a temperature set-point (the target temperature) and a heating duration. |
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390 | * |
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391 | * This function sets the parameters for one of the heater profiles 0 ... 9. |
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392 | * To activate the gas measurement with this profile, use function |
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393 | * ::bme680_use_heater_profile(), see below. |
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394 | * |
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395 | * Please note: According to the data sheet, a target temperatures of between |
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396 | * 200 and 400 degrees Celsius are typical and about 20 to 30 ms are necessary |
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397 | * for the heater to reach the desired target temperature. |
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398 | * |
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399 | * @param dev Device descriptor |
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400 | * @param profile heater profile 0 ... 9 |
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401 | * @param temperature target temperature in degree Celsius |
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402 | * @param duration heating duration in milliseconds |
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403 | * @return `ESP_OK` on success |
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404 | */ |
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405 | esp_err_t bme680_set_heater_profile(bme680_t *dev, uint8_t profile, uint16_t temperature, uint16_t duration); |
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406 | |
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407 | /** |
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408 | * @brief Activate gas measurement with a given heater profile |
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409 | * |
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410 | * The function activates the gas measurement with one of the heater |
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411 | * profiles 0 ... 9 or deactivates the gas measurement completely when |
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412 | * -1 or ::BME680_HEATER_NOT_USED is used as heater profile. |
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413 | * |
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414 | * Parameters of the activated heater profile have to be set before with |
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415 | * function ::bme680_set_heater_profile() otherwise the function fails. |
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416 | * |
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417 | * If several heater profiles have been defined with function |
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418 | * ::bme680_set_heater_profile(), a sequence of gas measurements with different |
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419 | * heater parameters can be realized by a sequence of activations of different |
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420 | * heater profiles for successive TPHG measurements using this function. |
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421 | * |
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422 | * @param dev Device descriptor |
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423 | * @param profile 0 ... 9 to activate or -1 to deactivate gas measure |
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424 | * @return `ESP_OK` on success |
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425 | */ |
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426 | esp_err_t bme680_use_heater_profile(bme680_t *dev, int8_t profile); |
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427 | |
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428 | /** |
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429 | * @brief Set ambient temperature |
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430 | * |
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431 | * The heater resistance calculation algorithm takes into account the ambient |
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432 | * temperature of the sensor. This function can be used to set this ambient |
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433 | * temperature. Either values determined from the sensor itself or from |
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434 | * another temperature sensor can be used. The default ambient temperature |
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435 | * is 25 degree Celsius. |
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436 | * |
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437 | * @param dev Device descriptor |
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438 | * @param temperature ambient temperature in degree Celsius |
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439 | * @return `ESP_OK` on success |
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440 | */ |
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441 | esp_err_t bme680_set_ambient_temperature(bme680_t *dev, int16_t temperature); |
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442 | |
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443 | #ifdef __cplusplus |
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444 | } |
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445 | #endif |
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446 | |
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447 | /**@}*/ |
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448 | |
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449 | #endif /* __BME680_H__ */ |