Sun, 16 Apr 2023 12:27:12 +0200
Preparations for BLE GATT. Added extra time after INA219 is powered on before measurement. Reduced LEDC frequency to 60 Hz, that makes the LED lights less nervous. Hardware mod on output 4, now needs external pulldown resistor.
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1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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parents:
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1 | /* |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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parents:
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2 | * Copyright (c) 2016 Grzegorz Hetman <ghetman@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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parents:
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3 | * Copyright (c) 2016 Alex Stewart <foogod@gmail.com> |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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4 | * Copyright (c) 2018 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
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5 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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6 | * Redistribution and use in source and binary forms, with or without |
1c9894662795
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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.
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parents:
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8 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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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.
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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.
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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.
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13 | * and/or other materials provided with the distribution. |
1c9894662795
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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.
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16 | * specific prior written permission. |
1c9894662795
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17 | * |
1c9894662795
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18 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
1c9894662795
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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
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21 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
1c9894662795
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22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
1c9894662795
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23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
1c9894662795
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24 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
1c9894662795
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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
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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 ds18x20.c |
1c9894662795
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32 | * |
1c9894662795
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33 | * ESP-IDF driver for the DS18S20/DS18B20 one-wire temperature sensor ICs |
1c9894662795
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34 | * |
1c9894662795
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35 | * Ported from esp-open-rtos |
1c9894662795
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36 | * |
1c9894662795
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37 | * Copyright (c) 2016 Grzegorz Hetman <ghetman@gmail.com>\n |
1c9894662795
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38 | * Copyright (c) 2016 Alex Stewart <foogod@gmail.com>\n |
1c9894662795
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39 | * Copyright (c) 2018 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
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40 | * |
1c9894662795
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41 | * BSD Licensed as described in the file LICENSE |
1c9894662795
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42 | */ |
1c9894662795
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43 | |
1c9894662795
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44 | #include <math.h> |
1c9894662795
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45 | #include <esp_log.h> |
1c9894662795
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46 | #include <freertos/FreeRTOS.h> |
1c9894662795
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47 | #include <freertos/task.h> |
1c9894662795
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48 | #include <esp_idf_lib_helpers.h> |
1c9894662795
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49 | #include "ds18x20.h" |
1c9894662795
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50 | |
1c9894662795
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51 | #define ds18x20_WRITE_SCRATCHPAD 0x4E |
1c9894662795
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52 | #define ds18x20_READ_SCRATCHPAD 0xBE |
1c9894662795
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53 | #define ds18x20_COPY_SCRATCHPAD 0x48 |
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54 | #define ds18x20_READ_EEPROM 0xB8 |
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55 | #define ds18x20_READ_PWRSUPPLY 0xB4 |
1c9894662795
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56 | #define ds18x20_SEARCHROM 0xF0 |
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57 | #define ds18x20_SKIP_ROM 0xCC |
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58 | #define ds18x20_READROM 0x33 |
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59 | #define ds18x20_MATCHROM 0x55 |
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60 | #define ds18x20_ALARMSEARCH 0xEC |
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61 | #define ds18x20_CONVERT_T 0x44 |
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62 | |
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63 | #define SLEEP_MS(x) vTaskDelay(((x) + portTICK_PERIOD_MS - 1) / portTICK_PERIOD_MS) |
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64 | #define CHECK(x) do { esp_err_t __; if ((__ = x) != ESP_OK) return __; } while (0) |
1c9894662795
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65 | #define CHECK_ARG(VAL) do { if (!(VAL)) return ESP_ERR_INVALID_ARG; } while (0) |
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66 | |
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67 | #if HELPER_TARGET_IS_ESP32 |
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68 | static portMUX_TYPE mux = portMUX_INITIALIZER_UNLOCKED; |
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69 | #define PORT_ENTER_CRITICAL portENTER_CRITICAL(&mux) |
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70 | #define PORT_EXIT_CRITICAL portEXIT_CRITICAL(&mux) |
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71 | |
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72 | #elif HELPER_TARGET_IS_ESP8266 |
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73 | #define PORT_ENTER_CRITICAL portENTER_CRITICAL() |
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74 | #define PORT_EXIT_CRITICAL portEXIT_CRITICAL() |
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75 | #endif |
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76 | |
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77 | static const char *TAG = "ds18x20"; |
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78 | |
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79 | esp_err_t ds18x20_measure(gpio_num_t pin, ds18x20_addr_t addr, bool wait) |
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80 | { |
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81 | if (!onewire_reset(pin)) |
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82 | return ESP_ERR_INVALID_RESPONSE; |
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83 | |
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84 | if (addr == DS18X20_ANY) |
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85 | onewire_skip_rom(pin); |
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86 | else |
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87 | onewire_select(pin, addr); |
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88 | |
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89 | PORT_ENTER_CRITICAL; |
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90 | onewire_write(pin, ds18x20_CONVERT_T); |
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91 | // For parasitic devices, power must be applied within 10us after issuing |
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92 | // the convert command. |
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93 | onewire_power(pin); |
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94 | PORT_EXIT_CRITICAL; |
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95 | |
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96 | if (wait) |
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97 | { |
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98 | SLEEP_MS(750); |
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99 | onewire_depower(pin); |
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100 | } |
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101 | |
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102 | return ESP_OK; |
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103 | } |
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104 | |
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105 | esp_err_t ds18x20_read_scratchpad(gpio_num_t pin, ds18x20_addr_t addr, uint8_t *buffer) |
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106 | { |
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107 | CHECK_ARG(buffer); |
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108 | |
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109 | uint8_t crc; |
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110 | uint8_t expected_crc; |
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111 | |
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112 | if (!onewire_reset(pin)) |
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113 | return ESP_ERR_INVALID_RESPONSE; |
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114 | |
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115 | if (addr == DS18X20_ANY) |
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116 | onewire_skip_rom(pin); |
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117 | else |
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118 | onewire_select(pin, addr); |
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119 | onewire_write(pin, ds18x20_READ_SCRATCHPAD); |
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120 | |
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121 | for (int i = 0; i < 8; i++) |
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122 | buffer[i] = onewire_read(pin); |
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123 | crc = onewire_read(pin); |
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124 | |
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125 | expected_crc = onewire_crc8(buffer, 8); |
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126 | if (crc != expected_crc) |
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127 | { |
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128 | ESP_LOGE(TAG, "CRC check failed reading scratchpad: %02x %02x %02x %02x %02x %02x %02x %02x : %02x (expected %02x)", buffer[0], buffer[1], |
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129 | buffer[2], buffer[3], buffer[4], buffer[5], buffer[6], buffer[7], crc, expected_crc); |
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130 | return ESP_ERR_INVALID_CRC; |
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131 | } |
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132 | |
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133 | return ESP_OK; |
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134 | } |
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135 | |
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136 | esp_err_t ds18x20_write_scratchpad(gpio_num_t pin, ds18x20_addr_t addr, uint8_t *buffer) |
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137 | { |
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138 | CHECK_ARG(buffer); |
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139 | |
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140 | if (!onewire_reset(pin)) |
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141 | return ESP_ERR_INVALID_RESPONSE; |
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142 | |
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143 | if (addr == DS18X20_ANY) |
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144 | onewire_skip_rom(pin); |
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145 | else |
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146 | onewire_select(pin, addr); |
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147 | onewire_write(pin, ds18x20_WRITE_SCRATCHPAD); |
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148 | |
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149 | for (int i = 0; i < 3; i++) |
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150 | onewire_write(pin, buffer[i]); |
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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 | esp_err_t ds18x20_copy_scratchpad(gpio_num_t pin, ds18x20_addr_t addr) |
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156 | { |
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157 | if (!onewire_reset(pin)) |
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158 | return ESP_ERR_INVALID_RESPONSE; |
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159 | |
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160 | if (addr == DS18X20_ANY) |
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161 | onewire_skip_rom(pin); |
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162 | else |
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163 | onewire_select(pin, addr); |
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164 | |
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165 | PORT_ENTER_CRITICAL; |
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166 | onewire_write(pin, ds18x20_COPY_SCRATCHPAD); |
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167 | // For parasitic devices, power must be applied within 10us after issuing |
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168 | // the convert command. |
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169 | onewire_power(pin); |
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170 | PORT_EXIT_CRITICAL; |
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171 | |
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172 | // And then it needs to keep that power up for 10ms. |
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173 | SLEEP_MS(10); |
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174 | onewire_depower(pin); |
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175 | |
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176 | return ESP_OK; |
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177 | } |
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178 | |
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179 | esp_err_t ds18b20_read_temperature(gpio_num_t pin, ds18x20_addr_t addr, float *temperature) |
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180 | { |
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181 | CHECK_ARG(temperature); |
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182 | |
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183 | uint8_t scratchpad[8]; |
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184 | int16_t temp; |
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185 | |
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186 | CHECK(ds18x20_read_scratchpad(pin, addr, scratchpad)); |
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187 | |
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188 | temp = scratchpad[1] << 8 | scratchpad[0]; |
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189 | |
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190 | *temperature = ((float)temp * 625.0) / 10000; |
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191 | |
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192 | return ESP_OK; |
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193 | } |
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194 | |
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195 | esp_err_t ds18s20_read_temperature(gpio_num_t pin, ds18x20_addr_t addr, float *temperature) |
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196 | { |
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197 | CHECK_ARG(temperature); |
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198 | |
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199 | uint8_t scratchpad[8]; |
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200 | int16_t temp; |
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201 | |
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202 | CHECK(ds18x20_read_scratchpad(pin, addr, scratchpad)); |
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203 | |
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204 | temp = scratchpad[1] << 8 | scratchpad[0]; |
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205 | |
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206 | temp = ((temp & 0xfffe) << 3) + (16 - scratchpad[6]) - 4; |
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207 | *temperature = ((float)temp * 625.0) / 10000 - 0.25; |
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208 | |
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209 | return ESP_OK; |
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210 | } |
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211 | |
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212 | esp_err_t ds18x20_read_temperature(gpio_num_t pin, ds18x20_addr_t addr, float *temperature) |
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213 | { |
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214 | if ((uint8_t)addr == DS18B20_FAMILY_ID) { |
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215 | return ds18b20_read_temperature(pin, addr, temperature); |
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216 | } |
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217 | else |
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218 | { |
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219 | return ds18s20_read_temperature(pin, addr, temperature); |
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220 | } |
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221 | } |
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222 | |
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223 | esp_err_t ds18b20_measure_and_read(gpio_num_t pin, ds18x20_addr_t addr, float *temperature) |
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224 | { |
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225 | CHECK_ARG(temperature); |
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226 | |
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227 | CHECK(ds18x20_measure(pin, addr, true)); |
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228 | return ds18b20_read_temperature(pin, addr, temperature); |
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229 | } |
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230 | |
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231 | esp_err_t ds18s20_measure_and_read(gpio_num_t pin, ds18x20_addr_t addr, float *temperature) |
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232 | { |
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233 | CHECK_ARG(temperature); |
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234 | |
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235 | CHECK(ds18x20_measure(pin, addr, true)); |
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236 | return ds18s20_read_temperature(pin, addr, temperature); |
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237 | } |
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238 | |
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239 | esp_err_t ds18x20_measure_and_read(gpio_num_t pin, ds18x20_addr_t addr, float *temperature) |
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240 | { |
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241 | CHECK_ARG(temperature); |
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242 | |
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243 | CHECK(ds18x20_measure(pin, addr, true)); |
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244 | return ds18x20_read_temperature(pin, addr, temperature); |
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245 | } |
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246 | |
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247 | esp_err_t ds18x20_measure_and_read_multi(gpio_num_t pin, ds18x20_addr_t *addr_list, size_t addr_count, float *result_list) |
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248 | { |
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249 | CHECK_ARG(result_list && addr_count); |
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250 | |
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251 | CHECK(ds18x20_measure(pin, DS18X20_ANY, true)); |
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252 | |
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253 | return ds18x20_read_temp_multi(pin, addr_list, addr_count, result_list); |
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254 | } |
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255 | |
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256 | esp_err_t ds18x20_scan_devices(gpio_num_t pin, ds18x20_addr_t *addr_list, size_t addr_count, size_t *found) |
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257 | { |
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258 | CHECK_ARG(addr_list && addr_count); |
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259 | |
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260 | onewire_search_t search; |
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261 | onewire_addr_t addr; |
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262 | |
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263 | *found = 0; |
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264 | onewire_search_start(&search); |
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265 | while ((addr = onewire_search_next(&search, pin)) != ONEWIRE_NONE) |
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266 | { |
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267 | uint8_t family_id = (uint8_t)addr; |
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268 | if (family_id == DS18B20_FAMILY_ID || family_id == DS18S20_FAMILY_ID) |
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269 | { |
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270 | if (*found < addr_count) |
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271 | addr_list[*found] = addr; |
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272 | *found += 1; |
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273 | } |
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274 | } |
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275 | |
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276 | return ESP_OK; |
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277 | } |
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278 | |
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279 | esp_err_t ds18x20_read_temp_multi(gpio_num_t pin, ds18x20_addr_t *addr_list, size_t addr_count, float *result_list) |
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280 | { |
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281 | CHECK_ARG(result_list); |
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282 | |
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283 | esp_err_t res = ESP_OK; |
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284 | for (size_t i = 0; i < addr_count; i++) |
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285 | { |
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286 | esp_err_t tmp = ds18x20_read_temperature(pin, addr_list[i], &result_list[i]); |
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287 | if (tmp != ESP_OK) |
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288 | res = tmp; |
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289 | } |
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290 | return res; |
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291 | } |
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292 |