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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changeset
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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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changeset
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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:
diff
changeset
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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>
parents:
diff
changeset
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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>
parents:
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changeset
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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>
parents:
diff
changeset
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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>
parents:
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changeset
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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:
diff
changeset
|
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:
diff
changeset
|
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:
diff
changeset
|
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>
parents:
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changeset
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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>
parents:
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changeset
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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>
parents:
diff
changeset
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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>
parents:
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changeset
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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>
parents:
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changeset
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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>
parents:
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
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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>
parents:
diff
changeset
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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changeset
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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changeset
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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changeset
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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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.
Michiel Broek <mbroek@mbse.eu>
parents:
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changeset
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26 | */ |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
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27 | |
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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28 | /** |
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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29 | * @file sht4x.c |
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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30 | * |
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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31 | * ESP-IDF driver for Sensirion SHT40/SHT41 digital temperature and humidity sensor |
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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changeset
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32 | * |
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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changeset
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33 | * 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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changeset
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34 | * |
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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35 | * BSD Licensed as described in the file LICENSE |
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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changeset
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36 | */ |
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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changeset
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37 | |
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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38 | #include <esp_log.h> |
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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39 | #include <freertos/FreeRTOS.h> |
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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40 | #include <freertos/task.h> |
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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41 | #include <esp_idf_lib_helpers.h> |
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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42 | #include <esp_timer.h> |
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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43 | #include "sht4x.h" |
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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changeset
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44 | |
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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45 | #define I2C_FREQ_HZ 1000000 // 1MHz |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
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46 | |
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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47 | static const char *TAG = "sht4x"; |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
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48 | |
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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49 | #define CMD_RESET 0x94 |
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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50 | #define CMD_SERIAL 0x89 |
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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51 | #define CMD_MEAS_HIGH 0xfd |
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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52 | #define CMD_MEAS_MED 0xf6 |
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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53 | #define CMD_MEAS_LOW 0xe0 |
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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54 | #define CMD_MEAS_H_HIGH_LONG 0x39 |
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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55 | #define CMD_MEAS_H_HIGH_SHORT 0x32 |
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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56 | #define CMD_MEAS_H_MED_LONG 0x2f |
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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57 | #define CMD_MEAS_H_MED_SHORT 0x24 |
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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58 | #define CMD_MEAS_H_LOW_LONG 0x1e |
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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59 | #define CMD_MEAS_H_LOW_SHORT 0x15 |
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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60 | |
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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61 | #define CHECK(x) do { esp_err_t __; if ((__ = x) != ESP_OK) return __; } while (0) |
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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62 | #define CHECK_ARG(VAL) do { if (!(VAL)) return ESP_ERR_INVALID_ARG; } while (0) |
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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63 | |
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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64 | #define G_POLYNOM 0x31 |
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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65 | |
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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66 | static uint8_t crc8(uint8_t data[], size_t len) |
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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67 | { |
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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68 | uint8_t crc = 0xff; |
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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69 | |
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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70 | for (size_t i = 0; i < len; i++) |
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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71 | { |
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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72 | crc ^= data[i]; |
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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73 | for (size_t i = 0; i < 8; i++) |
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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74 | crc = crc & 0x80 ? (crc << 1) ^ G_POLYNOM : crc << 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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75 | } |
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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76 | return crc; |
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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77 | } |
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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78 | |
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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79 | static inline size_t get_duration_ms(sht4x_t *dev) |
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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80 | { |
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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81 | switch (dev->heater) |
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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82 | { |
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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83 | case SHT4X_HEATER_HIGH_LONG: |
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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84 | case SHT4X_HEATER_MEDIUM_LONG: |
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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85 | case SHT4X_HEATER_LOW_LONG: |
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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86 | return 1100; |
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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87 | case SHT4X_HEATER_HIGH_SHORT: |
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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88 | case SHT4X_HEATER_MEDIUM_SHORT: |
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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89 | case SHT4X_HEATER_LOW_SHORT: |
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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90 | return 110; |
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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91 | default: |
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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92 | switch (dev->repeatability) |
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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93 | { |
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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94 | case SHT4X_HIGH: |
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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95 | return 10; |
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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96 | case SHT4X_MEDIUM: |
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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97 | return 5; |
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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98 | default: |
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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99 | return 2; |
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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100 | } |
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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101 | } |
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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102 | } |
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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103 | |
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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104 | static inline uint8_t get_meas_cmd(sht4x_t *dev) |
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105 | { |
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106 | switch (dev->heater) |
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107 | { |
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108 | case SHT4X_HEATER_HIGH_LONG: |
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109 | return CMD_MEAS_H_HIGH_LONG; |
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110 | case SHT4X_HEATER_HIGH_SHORT: |
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111 | return CMD_MEAS_H_HIGH_SHORT; |
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112 | case SHT4X_HEATER_MEDIUM_LONG: |
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113 | return CMD_MEAS_H_MED_LONG; |
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114 | case SHT4X_HEATER_MEDIUM_SHORT: |
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115 | return CMD_MEAS_H_MED_SHORT; |
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116 | case SHT4X_HEATER_LOW_LONG: |
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117 | return CMD_MEAS_H_LOW_LONG; |
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118 | case SHT4X_HEATER_LOW_SHORT: |
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119 | return CMD_MEAS_H_LOW_SHORT; |
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120 | default: |
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121 | switch (dev->repeatability) |
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122 | { |
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123 | case SHT4X_HIGH: |
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124 | return CMD_MEAS_HIGH; |
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125 | case SHT4X_MEDIUM: |
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126 | return CMD_MEAS_MED; |
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127 | default: |
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128 | return CMD_MEAS_LOW; |
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129 | } |
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130 | } |
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131 | } |
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132 | |
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133 | static inline esp_err_t send_cmd_nolock(sht4x_t *dev, uint8_t cmd) |
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134 | { |
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135 | ESP_LOGD(TAG, "Sending cmd %02x...", cmd); |
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136 | return i2c_dev_write(&dev->i2c_dev, NULL, 0, &cmd, 1); |
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137 | } |
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138 | |
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139 | static inline esp_err_t read_res_nolock(sht4x_t *dev, sht4x_raw_data_t res) |
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140 | { |
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141 | CHECK(i2c_dev_read(&dev->i2c_dev, NULL, 0, res, SHT4X_RAW_DATA_SIZE)); |
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142 | |
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143 | ESP_LOGD(TAG, "Got response %02x %02x %02x %02x %02x %02x", |
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144 | res[0], res[1], res[2], res[3], res[4], res[5]); |
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145 | |
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146 | if (res[2] != crc8(res, 2) || res[5] != crc8(res + 3, 2)) |
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147 | { |
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148 | ESP_LOGE(TAG, "Invalid CRC"); |
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149 | return ESP_ERR_INVALID_CRC; |
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150 | } |
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151 | |
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152 | return ESP_OK; |
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153 | } |
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154 | |
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155 | static esp_err_t send_cmd(sht4x_t *dev, uint8_t cmd) |
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156 | { |
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157 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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158 | I2C_DEV_CHECK(&dev->i2c_dev, send_cmd_nolock(dev, cmd)); |
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159 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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160 | |
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161 | return ESP_OK; |
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162 | } |
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163 | |
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164 | static esp_err_t read_res(sht4x_t *dev, sht4x_raw_data_t res) |
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165 | { |
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166 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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167 | I2C_DEV_CHECK(&dev->i2c_dev, read_res_nolock(dev, res)); |
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168 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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169 | |
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170 | return ESP_OK; |
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171 | } |
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172 | |
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173 | static esp_err_t exec_cmd(sht4x_t *dev, uint8_t cmd, size_t delay_ticks, sht4x_raw_data_t res) |
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174 | { |
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175 | I2C_DEV_TAKE_MUTEX(&dev->i2c_dev); |
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176 | I2C_DEV_CHECK(&dev->i2c_dev, send_cmd_nolock(dev, cmd)); |
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177 | if (delay_ticks) |
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178 | vTaskDelay(delay_ticks); |
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179 | I2C_DEV_CHECK(&dev->i2c_dev, read_res_nolock(dev, res)); |
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180 | I2C_DEV_GIVE_MUTEX(&dev->i2c_dev); |
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181 | |
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182 | return ESP_OK; |
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183 | } |
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184 | |
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185 | static inline bool is_measuring(sht4x_t *dev) |
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186 | { |
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187 | // not running if measurement is not started |
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188 | if (!dev->meas_started) |
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189 | return false; |
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190 | |
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191 | // not running if time elapsed is greater than duration |
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192 | uint64_t elapsed = esp_timer_get_time() - dev->meas_start_time; |
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193 | return elapsed < get_duration_ms(dev) * 1000; |
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194 | } |
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195 | |
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196 | /////////////////////////////////////////////////////////////////////////////// |
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197 | |
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198 | esp_err_t sht4x_init_desc(sht4x_t *dev, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio) |
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199 | { |
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200 | CHECK_ARG(dev); |
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201 | |
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202 | dev->i2c_dev.port = port; |
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203 | dev->i2c_dev.addr = SHT4X_I2C_ADDRESS; |
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204 | dev->i2c_dev.cfg.sda_io_num = sda_gpio; |
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205 | dev->i2c_dev.cfg.scl_io_num = scl_gpio; |
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206 | #if HELPER_TARGET_IS_ESP32 |
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207 | dev->i2c_dev.cfg.master.clk_speed = I2C_FREQ_HZ; |
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208 | #endif |
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209 | |
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210 | return i2c_dev_create_mutex(&dev->i2c_dev); |
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211 | } |
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212 | |
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213 | esp_err_t sht4x_free_desc(sht4x_t *dev) |
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214 | { |
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215 | CHECK_ARG(dev); |
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216 | |
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217 | return i2c_dev_delete_mutex(&dev->i2c_dev); |
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218 | } |
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219 | |
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220 | esp_err_t sht4x_init(sht4x_t *dev) |
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221 | { |
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222 | CHECK_ARG(dev); |
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223 | |
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224 | dev->repeatability = SHT4X_HIGH; |
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225 | dev->heater = SHT4X_HEATER_OFF; |
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226 | |
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227 | sht4x_raw_data_t s; |
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228 | CHECK(exec_cmd(dev, CMD_SERIAL, pdMS_TO_TICKS(10), s)); |
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229 | dev->serial = ((uint32_t)s[0] << 24) | ((uint32_t)s[1] << 16) | ((uint32_t)s[3] << 8) | s[4]; |
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230 | |
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231 | return sht4x_reset(dev); |
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232 | } |
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233 | |
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234 | esp_err_t sht4x_reset(sht4x_t *dev) |
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235 | { |
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236 | dev->meas_start_time = 0; |
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237 | dev->meas_started = false; |
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238 | |
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239 | CHECK(send_cmd(dev, CMD_RESET)); |
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240 | vTaskDelay(1); |
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241 | |
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242 | return ESP_OK; |
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243 | } |
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244 | |
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245 | esp_err_t sht4x_measure(sht4x_t *dev, float *temperature, float *humidity) |
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246 | { |
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247 | CHECK_ARG(dev && (temperature || humidity)); |
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248 | |
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249 | sht4x_raw_data_t raw; |
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250 | CHECK(exec_cmd(dev, get_meas_cmd(dev), sht4x_get_measurement_duration(dev), raw)); |
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251 | |
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252 | return sht4x_compute_values(raw, temperature, humidity); |
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253 | } |
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254 | |
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255 | esp_err_t sht4x_start_measurement(sht4x_t *dev) |
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256 | { |
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257 | CHECK_ARG(dev); |
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258 | |
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259 | if (is_measuring(dev)) |
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260 | { |
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261 | ESP_LOGE(TAG, "Measurement is still running"); |
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262 | return ESP_ERR_INVALID_STATE; |
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263 | } |
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264 | |
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265 | dev->meas_start_time = esp_timer_get_time(); |
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266 | CHECK(send_cmd(dev, get_meas_cmd(dev))); |
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267 | dev->meas_started = true; |
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268 | |
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269 | return ESP_OK; |
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270 | } |
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271 | |
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272 | size_t sht4x_get_measurement_duration(sht4x_t *dev) |
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273 | { |
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274 | if (!dev) return 0; |
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275 | |
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276 | size_t res = pdMS_TO_TICKS(get_duration_ms(dev)); |
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277 | return res == 0 ? 1 : res; |
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278 | } |
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279 | |
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280 | esp_err_t sht4x_get_raw_data(sht4x_t *dev, sht4x_raw_data_t raw) |
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281 | { |
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282 | CHECK_ARG(dev); |
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283 | |
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284 | if (is_measuring(dev)) |
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285 | { |
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286 | ESP_LOGE(TAG, "Measurement is still running"); |
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287 | return ESP_ERR_INVALID_STATE; |
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288 | } |
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289 | |
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290 | dev->meas_started = false; |
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291 | return read_res(dev, raw); |
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292 | } |
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293 | |
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294 | esp_err_t sht4x_compute_values(sht4x_raw_data_t raw_data, float *temperature, float *humidity) |
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295 | { |
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296 | CHECK_ARG(raw_data && (temperature || humidity)); |
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297 | |
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298 | if (temperature) |
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299 | *temperature = ((uint16_t)raw_data[0] << 8 | raw_data[1]) * 175.0 / 65535.0 - 45.0; |
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300 | |
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301 | if (humidity) |
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302 | *humidity = ((uint16_t)raw_data[3] << 8 | raw_data[4]) * 125.0 / 65535.0 - 6.0; |
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303 | |
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304 | return ESP_OK; |
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305 | } |
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306 | |
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307 | esp_err_t sht4x_get_results(sht4x_t *dev, float *temperature, float *humidity) |
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308 | { |
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309 | sht4x_raw_data_t raw; |
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310 | CHECK(sht4x_get_raw_data(dev, raw)); |
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311 | |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
312 | return sht4x_compute_values(raw, temperature, humidity); |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
Michiel Broek <mbroek@mbse.eu>
parents:
diff
changeset
|
313 | } |