Thu, 06 Apr 2023 20:53:06 +0200
Set the new measured deep sleep current consumption. This is half of the Wemos D1 system.
1
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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1 | /* |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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2 | * Copyright (c) 2021, Sensirion AG |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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3 | * Copyright (c) 2021 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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4 | * Copyright (c) 2021 Nate Usher <n.usher87@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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5 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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6 | * Redistribution and use in source and binary forms, with or without |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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7 | * modification, are permitted provided that the following conditions are met: |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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8 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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9 | * 1. Redistributions of source code must retain the above copyright notice, |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
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10 | * this list of conditions and the following disclaimer. |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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11 | * 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.
Michiel Broek <mbroek@mbse.eu>
parents:
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12 | * this list of conditions and the following disclaimer in the documentation |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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13 | * and/or other materials provided with the distribution. |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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14 | * 3. Neither the name of the copyright holder nor the names of itscontributors |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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15 | * may be used to endorse or promote products derived from this software without |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
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16 | * specific prior written permission. |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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17 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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19 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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25 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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26 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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27 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
1c9894662795
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28 | */ |
1c9894662795
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29 | |
1c9894662795
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30 | /** |
1c9894662795
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31 | * @file scd30.c |
1c9894662795
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32 | * |
1c9894662795
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33 | * ESP-IDF driver for Sensirion SCD30 CO2 sensor. |
1c9894662795
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34 | * |
1c9894662795
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35 | * Adapted from https://github.com/UncleRus/esp-idf-lib/tree/master/components/scd4x |
1c9894662795
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36 | * |
1c9894662795
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37 | * Copyright (c) 2021, Sensirion AG |
1c9894662795
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Michiel Broek <mbroek@mbse.eu>
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38 | * Copyright (c) 2021 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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39 | * Copyright (c) 2021 Nate Usher <n.usher87@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 | */ |
1c9894662795
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43 | #include <freertos/FreeRTOS.h> |
1c9894662795
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44 | #include <freertos/task.h> |
1c9894662795
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45 | #include <esp_log.h> |
1c9894662795
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46 | #if CONFIG_IDF_TARGET_ESP32 |
1c9894662795
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47 | #include <esp32/rom/ets_sys.h> |
1c9894662795
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48 | #elif CONFIG_IDF_TARGET_ESP32S2 |
1c9894662795
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49 | #include <esp32s2/rom/ets_sys.h> |
1c9894662795
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50 | #elif CONFIG_IDF_TARGET_ESP32S3 |
1c9894662795
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51 | #include <esp32s3/rom/ets_sys.h> |
1c9894662795
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52 | #elif CONFIG_IDF_TARGET_ESP32C3 |
1c9894662795
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53 | #include <esp32c3/rom/ets_sys.h> |
1c9894662795
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54 | #elif CONFIG_IDF_TARGET_ESP32H2 |
1c9894662795
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55 | #include <esp32h2/rom/ets_sys.h> |
1c9894662795
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56 | #elif CONFIG_IDF_TARGET_ESP32C2 |
1c9894662795
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57 | #include <esp32c2/rom/ets_sys.h> |
1c9894662795
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58 | #endif |
1c9894662795
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59 | #include <esp_idf_lib_helpers.h> |
1c9894662795
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60 | #include "scd30.h" |
1c9894662795
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61 | |
1c9894662795
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62 | #define I2C_FREQ_HZ 100000 // 100kHz |
1c9894662795
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63 | |
1c9894662795
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64 | static const char *TAG = "scd30"; |
1c9894662795
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65 | |
1c9894662795
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66 | #define CMD_TRIGGER_CONTINUOUS_MEASUREMENT (0x0010) |
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67 | #define CMD_STOP_CONTINUOUS_MEASUREMENT (0x0104) |
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68 | #define CMD_SET_MEASUREMENT_INTERVAL (0x4600) |
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69 | #define CMD_GET_DATA_READY_STATUS (0x0202) |
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70 | #define CMD_READ_MEASUREMENT (0x0300) |
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71 | #define CMD_ACTIVATE_AUTOMATIC_SELF_CALIBRATION (0x5306) |
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72 | #define CMD_SET_FORCED_RECALIBRATION_VALUE (0x5204) |
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73 | #define CMD_SET_TEMPERATURE_OFFSET (0x5403) |
1c9894662795
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74 | #define CMD_ALTITUDE_COMPENSATION (0x5102) |
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75 | #define CMD_READ_FIRMWARE_VERSION (0xD100) |
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76 | #define CMD_SOFT_RESET (0XD304) |
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77 | |
1c9894662795
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78 | #define CHECK(x) \ |
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79 | do \ |
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80 | { \ |
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81 | esp_err_t __; \ |
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82 | if ((__ = x) != ESP_OK) \ |
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83 | return __; \ |
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84 | } while (0) |
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85 | #define CHECK_ARG(VAL) \ |
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86 | do \ |
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87 | { \ |
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88 | if (!(VAL)) \ |
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89 | return ESP_ERR_INVALID_ARG; \ |
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90 | } while (0) |
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91 | |
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92 | static uint8_t crc8(const uint8_t *data, size_t count) |
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93 | { |
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94 | uint8_t res = 0xff; |
1c9894662795
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95 | |
1c9894662795
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96 | for (size_t i = 0; i < count; ++i) |
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97 | { |
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98 | res ^= data[i]; |
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99 | for (uint8_t bit = 8; bit > 0; --bit) |
1c9894662795
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100 | { |
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101 | if (res & 0x80) |
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102 | res = (res << 1) ^ 0x31; |
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103 | else |
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104 | res = (res << 1); |
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105 | } |
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106 | } |
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107 | return res; |
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108 | } |
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109 | |
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110 | static inline uint16_t swap(uint16_t v) |
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111 | { |
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112 | return (v << 8) | (v >> 8); |
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113 | } |
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114 | |
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115 | static esp_err_t send_cmd(i2c_dev_t *dev, uint16_t cmd, uint16_t *data, size_t words) |
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116 | { |
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117 | uint8_t buf[2 + words * 3]; |
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118 | // add command |
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119 | *(uint16_t *)buf = swap(cmd); |
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120 | if (data && words) |
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121 | // add arguments |
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122 | for (size_t i = 0; i < words; i++) |
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123 | { |
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124 | uint8_t *p = buf + 2 + i * 3; |
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125 | *(uint16_t *)p = swap(data[i]); |
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126 | *(p + 2) = crc8(p, 2); |
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127 | } |
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128 | |
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129 | ESP_LOGV(TAG, "Sending buffer:"); |
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130 | ESP_LOG_BUFFER_HEX_LEVEL(TAG, buf, sizeof(buf), ESP_LOG_VERBOSE); |
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131 | |
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132 | return i2c_dev_write(dev, NULL, 0, buf, sizeof(buf)); |
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133 | } |
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134 | |
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135 | static esp_err_t read_resp(i2c_dev_t *dev, uint16_t *data, size_t words) |
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136 | { |
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137 | uint8_t buf[words * 3]; |
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138 | CHECK(i2c_dev_read(dev, NULL, 0, buf, sizeof(buf))); |
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139 | |
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140 | ESP_LOGV(TAG, "Received buffer:"); |
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141 | ESP_LOG_BUFFER_HEX_LEVEL(TAG, buf, sizeof(buf), ESP_LOG_VERBOSE); |
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142 | |
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143 | for (size_t i = 0; i < words; i++) |
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144 | { |
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145 | uint8_t *p = buf + i * 3; |
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146 | uint8_t crc = crc8(p, 2); |
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147 | if (crc != *(p + 2)) |
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148 | { |
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149 | ESP_LOGE(TAG, "Invalid CRC 0x%02x, expected 0x%02x", crc, *(p + 2)); |
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150 | return ESP_ERR_INVALID_CRC; |
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151 | } |
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152 | data[i] = swap(*(uint16_t *)p); |
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153 | } |
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154 | return ESP_OK; |
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155 | } |
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156 | |
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157 | static esp_err_t execute_cmd(i2c_dev_t *dev, uint16_t cmd, uint32_t timeout_ms, |
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158 | uint16_t *out_data, size_t out_words, uint16_t *in_data, size_t in_words) |
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159 | { |
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160 | CHECK_ARG(dev); |
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161 | |
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162 | I2C_DEV_TAKE_MUTEX(dev); |
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163 | I2C_DEV_CHECK(dev, send_cmd(dev, cmd, out_data, out_words)); |
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164 | if (timeout_ms) |
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165 | { |
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166 | if (timeout_ms > 10) |
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167 | vTaskDelay(pdMS_TO_TICKS(timeout_ms)); |
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168 | else |
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169 | ets_delay_us(timeout_ms * 1000); |
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170 | } |
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171 | if (in_data && in_words) |
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172 | I2C_DEV_CHECK(dev, read_resp(dev, in_data, in_words)); |
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173 | I2C_DEV_GIVE_MUTEX(dev); |
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174 | |
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175 | return ESP_OK; |
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176 | } |
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177 | |
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178 | ////////////////////////////////////////////////////////////////// |
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179 | |
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180 | esp_err_t scd30_init_desc(i2c_dev_t *dev, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio) |
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181 | { |
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182 | CHECK_ARG(dev); |
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183 | |
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184 | dev->port = port; |
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185 | dev->addr = SCD30_I2C_ADDR; |
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186 | dev->cfg.sda_io_num = sda_gpio; |
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187 | dev->cfg.scl_io_num = scl_gpio; |
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188 | #if HELPER_TARGET_IS_ESP32 |
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189 | dev->cfg.master.clk_speed = I2C_FREQ_HZ; |
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190 | #endif |
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191 | |
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192 | return i2c_dev_create_mutex(dev); |
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193 | } |
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194 | |
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195 | esp_err_t scd30_free_desc(i2c_dev_t *dev) |
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196 | { |
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197 | CHECK_ARG(dev); |
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198 | |
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199 | return i2c_dev_delete_mutex(dev); |
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200 | } |
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201 | |
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202 | esp_err_t scd30_trigger_continuous_measurement(i2c_dev_t *dev, uint16_t p_comp) |
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203 | { |
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204 | CHECK_ARG(p_comp == 0 || (p_comp >= 700 && p_comp <= 1400)); |
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205 | |
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206 | return execute_cmd(dev, CMD_TRIGGER_CONTINUOUS_MEASUREMENT, 0, &p_comp, 1, NULL, 0); |
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207 | } |
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208 | |
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209 | esp_err_t scd30_stop_continuous_measurement(i2c_dev_t *dev) |
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210 | { |
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211 | return execute_cmd(dev, CMD_STOP_CONTINUOUS_MEASUREMENT, 1, NULL, 0, NULL, 0); |
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212 | } |
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213 | |
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214 | esp_err_t scd30_get_measurement_interval(i2c_dev_t *dev, uint16_t *interval_seconds) |
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215 | { |
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216 | CHECK_ARG(interval_seconds); |
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217 | return execute_cmd(dev, CMD_SET_MEASUREMENT_INTERVAL, 1, NULL, 0, interval_seconds, 1); |
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218 | } |
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219 | |
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220 | esp_err_t scd30_set_measurement_interval(i2c_dev_t *dev, uint16_t interval_seconds) |
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221 | { |
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222 | CHECK_ARG(interval_seconds > 2 && interval_seconds < 1800); |
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223 | return execute_cmd(dev, CMD_SET_MEASUREMENT_INTERVAL, 1, &interval_seconds, 1, NULL, 0); |
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224 | } |
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225 | |
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226 | esp_err_t scd30_get_data_ready_status(i2c_dev_t *dev, bool *data_ready) |
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227 | { |
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228 | CHECK_ARG(data_ready); |
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229 | |
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230 | uint16_t status; |
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231 | CHECK(execute_cmd(dev, CMD_GET_DATA_READY_STATUS, 1, NULL, 0, &status, 1)); |
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232 | *data_ready = status != 0; |
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233 | |
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234 | return ESP_OK; |
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235 | } |
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236 | |
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237 | esp_err_t scd30_read_measurement(i2c_dev_t *dev, float *co2, float *temperature, float *humidity) |
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238 | { |
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239 | CHECK_ARG(co2 || temperature || humidity); |
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240 | |
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241 | union { |
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242 | uint32_t u32; |
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243 | float f; |
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244 | } tmp; |
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245 | uint16_t buf[6]; |
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246 | CHECK(execute_cmd(dev, CMD_READ_MEASUREMENT, 3, NULL, 0, buf, 6)); |
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247 | if (co2) |
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248 | { |
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249 | tmp.u32 = ((uint32_t)buf[0] << 16) | buf[1]; |
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250 | *co2 = tmp.f; |
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251 | } |
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252 | if (temperature) |
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253 | { |
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254 | tmp.u32 = ((uint32_t)buf[2] << 16) | buf[3]; |
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255 | *temperature = tmp.f; |
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256 | } |
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257 | if (humidity) |
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258 | { |
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259 | tmp.u32 = ((uint32_t)buf[4] << 16) | buf[5]; |
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260 | *humidity = tmp.f; |
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261 | } |
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262 | return ESP_OK; |
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263 | } |
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264 | |
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265 | esp_err_t scd30_get_automatic_self_calibration(i2c_dev_t *dev, bool *enabled) |
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266 | { |
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267 | CHECK_ARG(enabled); |
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268 | |
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269 | return execute_cmd(dev, CMD_ACTIVATE_AUTOMATIC_SELF_CALIBRATION, 1, NULL, 0, (uint16_t *)enabled, 1); |
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270 | } |
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271 | |
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272 | esp_err_t scd30_set_automatic_self_calibration(i2c_dev_t *dev, bool enabled) |
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273 | { |
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274 | return execute_cmd(dev, CMD_ACTIVATE_AUTOMATIC_SELF_CALIBRATION, 1, (uint16_t *)&enabled, 1, NULL, 0); |
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275 | } |
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276 | |
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277 | esp_err_t scd30_get_forced_recalibration_value(i2c_dev_t *dev, uint16_t *correction_value) |
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278 | { |
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279 | CHECK_ARG(correction_value); |
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280 | |
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281 | return execute_cmd(dev, CMD_SET_FORCED_RECALIBRATION_VALUE, 1, |
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282 | NULL, 0, correction_value, 1); |
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283 | } |
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284 | |
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285 | esp_err_t scd30_set_forced_recalibration_value(i2c_dev_t *dev, uint16_t target_co2_concentration) |
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286 | { |
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287 | CHECK_ARG(target_co2_concentration); |
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288 | |
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289 | return execute_cmd(dev, CMD_SET_FORCED_RECALIBRATION_VALUE, 1, |
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290 | &target_co2_concentration, 1, NULL, 0); |
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291 | } |
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292 | |
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293 | esp_err_t scd30_get_temperature_offset_ticks(i2c_dev_t *dev, uint16_t *t_offset) |
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294 | { |
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295 | CHECK_ARG(t_offset); |
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296 | |
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297 | return execute_cmd(dev, CMD_SET_TEMPERATURE_OFFSET, 1, NULL, 0, t_offset, 1); |
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298 | } |
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299 | |
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300 | esp_err_t scd30_get_temperature_offset(i2c_dev_t *dev, float *t_offset) |
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301 | { |
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302 | CHECK_ARG(t_offset); |
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303 | uint16_t raw; |
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304 | |
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305 | CHECK(scd30_get_temperature_offset_ticks(dev, &raw)); |
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306 | |
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307 | *t_offset = (float)raw / 100; |
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308 | return ESP_OK; |
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309 | } |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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310 | |
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311 | esp_err_t scd30_set_temperature_offset_ticks(i2c_dev_t *dev, uint16_t t_offset) |
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312 | { |
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313 | return execute_cmd(dev, CMD_SET_TEMPERATURE_OFFSET, 1, &t_offset, 1, NULL, 0); |
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314 | } |
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Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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315 | |
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Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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316 | esp_err_t scd30_set_temperature_offset(i2c_dev_t *dev, float t_offset) |
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317 | { |
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318 | uint16_t raw = (uint16_t)(t_offset * 100); |
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319 | return scd30_set_temperature_offset_ticks(dev, raw); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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320 | } |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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321 | |
1c9894662795
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322 | esp_err_t scd30_get_sensor_altitude(i2c_dev_t *dev, uint16_t *altitude) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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323 | { |
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324 | CHECK_ARG(altitude); |
1c9894662795
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325 | |
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326 | return execute_cmd(dev, CMD_ALTITUDE_COMPENSATION, 1, NULL, 0, altitude, 1); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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327 | } |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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328 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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329 | esp_err_t scd30_set_sensor_altitude(i2c_dev_t *dev, uint16_t altitude) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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330 | { |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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331 | return execute_cmd(dev, CMD_ALTITUDE_COMPENSATION, 1, &altitude, 1, NULL, 0); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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332 | } |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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333 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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334 | esp_err_t scd30_read_firmware_version(i2c_dev_t *dev, uint16_t *firmware_version) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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335 | { |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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336 | CHECK_ARG(firmware_version); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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337 | return execute_cmd(dev, CMD_READ_FIRMWARE_VERSION, 1, NULL, 0, firmware_version, 1); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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338 | } |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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339 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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340 | esp_err_t scd30_soft_reset(i2c_dev_t *dev) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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341 | { |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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342 | return execute_cmd(dev, CMD_SOFT_RESET, 0, NULL, 0, NULL, 0); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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343 | } |