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>
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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>
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2 | * 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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3 | * |
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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4 | * 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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5 | * 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>
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6 | * |
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 | * 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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8 | * 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>
parents:
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9 | * 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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10 | * 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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11 | * 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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12 | * 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.
Michiel Broek <mbroek@mbse.eu>
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13 | * 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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14 | * specific prior written permission. |
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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15 | * |
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 | * 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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17 | * 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.
Michiel Broek <mbroek@mbse.eu>
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18 | * 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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19 | * 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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20 | * 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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21 | * 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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22 | * 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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23 | * 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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24 | * 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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25 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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26 | */ |
1c9894662795
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27 | |
1c9894662795
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28 | /** |
1c9894662795
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29 | * @file aht.c |
1c9894662795
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30 | * |
1c9894662795
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31 | * ESP-IDF driver for humidty/temperature sensors AHT10/AHT15/AHT20 |
1c9894662795
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32 | * |
1c9894662795
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33 | * Copyright (c) 2021 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
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34 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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35 | * BSD Licensed as described in the file LICENSE |
1c9894662795
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36 | */ |
1c9894662795
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37 | #include "aht.h" |
1c9894662795
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38 | #include <freertos/FreeRTOS.h> |
1c9894662795
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39 | #include <freertos/task.h> |
1c9894662795
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40 | #include <esp_log.h> |
1c9894662795
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41 | |
1c9894662795
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42 | #define I2C_FREQ_HZ 400000 // 400kHz |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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43 | |
1c9894662795
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44 | static const char *TAG = "aht"; |
1c9894662795
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45 | |
1c9894662795
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46 | #define CMD_CALIBRATE_1X (0xe1) |
1c9894662795
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47 | #define CMD_CALIBRATE_20 (0xbe) |
1c9894662795
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48 | #define CMD_RESET (0xba) |
1c9894662795
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49 | #define CMD_MODE_NORMAL (0xa8) |
1c9894662795
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50 | #define CMD_START_MEASUREMENT (0xac) |
1c9894662795
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51 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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52 | #define ARG_MODE_NORMAL (0x00) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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53 | #define ARG_MODE_CYCLE (0x20) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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54 | #define ARG_MODE_CALIBRATE (0x08) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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55 | #define ARG_MEAS_DATA (0x33) |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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56 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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57 | #define BIT_STATUS_BUSY BIT(7) |
1c9894662795
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58 | #define BIT_STATUS_CAL BIT(3) |
1c9894662795
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59 | |
1c9894662795
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60 | #define CHECK(x) do { esp_err_t __; if ((__ = x) != ESP_OK) return __; } while (0) |
1c9894662795
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61 | #define CHECK_ARG(VAL) do { if (!(VAL)) return ESP_ERR_INVALID_ARG; } while (0) |
1c9894662795
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62 | |
1c9894662795
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63 | static esp_err_t send_cmd_nolock(aht_t *dev, uint8_t cmd0, uint8_t cmd1, uint8_t cmd2, uint32_t delay_ms) |
1c9894662795
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64 | { |
1c9894662795
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65 | uint8_t buf[3] = { cmd0, cmd1, cmd2 }; |
1c9894662795
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66 | CHECK(i2c_dev_write(&dev->i2c_dev, NULL, 0, &buf, 3)); |
1c9894662795
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67 | vTaskDelay(pdMS_TO_TICKS(delay_ms)); |
1c9894662795
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68 | |
1c9894662795
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69 | return ESP_OK; |
1c9894662795
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70 | } |
1c9894662795
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71 | |
1c9894662795
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72 | static esp_err_t setup_nolock(aht_t *dev) |
1c9894662795
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73 | { |
1c9894662795
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74 | return send_cmd_nolock(dev, dev->type == AHT_TYPE_AHT1x ? CMD_CALIBRATE_1X : CMD_CALIBRATE_20, |
1c9894662795
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75 | (dev->mode == AHT_MODE_NORMAL ? ARG_MODE_NORMAL : ARG_MODE_CYCLE) | ARG_MODE_CALIBRATE, 0, 350); |
1c9894662795
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76 | } |
1c9894662795
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77 | |
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78 | /////////////////////////////////////////////////////////////////////////////// |
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79 | |
1c9894662795
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80 | esp_err_t aht_init_desc(aht_t *dev, uint8_t addr, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio) |
1c9894662795
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81 | { |
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82 | CHECK_ARG(dev); |
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83 | |
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84 | if (addr != AHT_I2C_ADDRESS_GND || addr > AHT_I2C_ADDRESS_VCC) |
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85 | { |
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86 | ESP_LOGE(TAG, "Invalid I2C address"); |
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87 | return ESP_ERR_INVALID_ARG; |
1c9894662795
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88 | } |
1c9894662795
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89 | |
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90 | dev->i2c_dev.port = port; |
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91 | dev->i2c_dev.addr = addr; |
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92 | dev->i2c_dev.cfg.sda_io_num = sda_gpio; |
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93 | dev->i2c_dev.cfg.scl_io_num = scl_gpio; |
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94 | #if HELPER_TARGET_IS_ESP32 |
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95 | dev->i2c_dev.cfg.master.clk_speed = I2C_FREQ_HZ; |
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96 | #endif |
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97 | |
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98 | return i2c_dev_create_mutex(&dev->i2c_dev); |
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99 | } |
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100 | |
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101 | esp_err_t aht_free_desc(aht_t *dev) |
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102 | { |
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103 | CHECK_ARG(dev); |
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104 | |
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105 | return i2c_dev_delete_mutex(&dev->i2c_dev); |
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106 | } |
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107 | |
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108 | esp_err_t aht_init(aht_t *dev) |
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109 | { |
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110 | CHECK_ARG(dev); |
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111 | |
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112 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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113 | I2C_DEV_CHECK(&dev->i2c_dev, setup_nolock(dev)); |
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114 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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115 | |
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116 | return ESP_OK; |
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117 | } |
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118 | |
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119 | esp_err_t aht_reset(aht_t *dev) |
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120 | { |
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121 | CHECK_ARG(dev); |
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122 | |
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123 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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124 | |
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125 | uint8_t cmd = CMD_RESET; |
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126 | I2C_DEV_CHECK(&dev->i2c_dev, i2c_dev_write(&dev->i2c_dev, NULL, 0, &cmd, 1)); |
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127 | vTaskDelay(pdMS_TO_TICKS(20)); |
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128 | I2C_DEV_CHECK(&dev->i2c_dev, setup_nolock(dev)); |
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129 | |
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130 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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131 | |
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132 | return ESP_OK; |
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133 | } |
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134 | |
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135 | esp_err_t aht_get_status(aht_t *dev, bool *busy, bool *calibrated) |
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136 | { |
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137 | CHECK_ARG(dev && (busy || calibrated)); |
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138 | |
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139 | uint8_t status; |
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140 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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141 | I2C_DEV_CHECK(&dev->i2c_dev, i2c_dev_read(&dev->i2c_dev, NULL, 0, &status, 1)); |
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142 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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143 | if (busy) |
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144 | *busy = (status & BIT_STATUS_BUSY) != 0; |
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145 | if (calibrated) |
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146 | *calibrated = (status & BIT_STATUS_CAL) != 0; |
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147 | |
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148 | return ESP_OK; |
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149 | } |
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150 | |
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151 | esp_err_t aht_get_data(aht_t *dev, float *temperature, float *humidity) |
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152 | { |
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153 | CHECK_ARG(dev && (temperature || humidity)); |
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154 | |
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155 | uint8_t buf[6]; |
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156 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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157 | I2C_DEV_CHECK(&dev->i2c_dev, send_cmd_nolock(dev, CMD_START_MEASUREMENT, ARG_MEAS_DATA, 0, 80)); |
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158 | I2C_DEV_CHECK(&dev->i2c_dev, i2c_dev_read(&dev->i2c_dev, NULL, 0, buf, 6)); |
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159 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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160 | |
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161 | if (humidity) |
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162 | { |
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163 | uint32_t raw = ((uint32_t)buf[1] << 12) | ((uint32_t)buf[2] << 4) | (buf[3] >> 4); |
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164 | *humidity = (float)raw * 100 / 0x100000; |
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165 | } |
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166 | |
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167 | if (temperature) |
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168 | { |
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169 | uint32_t raw = ((uint32_t)(buf[3] & 0x0f) << 16) | ((uint32_t)buf[4] << 8) | buf[5]; |
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170 | *temperature = (float)raw * 200 / 0x100000 - 50; |
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171 | } |
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172 | |
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173 | return ESP_OK; |
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174 | } |