Thu, 06 Apr 2023 20:53:06 +0200
Set the new measured deep sleep current consumption. This is half of the Wemos D1 system.
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1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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1 | /* |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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2 | * Copyright (c) 2019 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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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.
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6 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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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.
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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.
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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.
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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
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15 | * |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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16 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
1c9894662795
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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.
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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
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26 | */ |
1c9894662795
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27 | |
1c9894662795
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28 | /** |
1c9894662795
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29 | * @file max31725.c |
1c9894662795
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30 | * |
1c9894662795
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31 | * ESP-IDF driver for MAX31725/MAX31726 temperature sensors |
1c9894662795
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32 | * |
1c9894662795
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33 | * Copyright (c) 2019 Ruslan V. Uss <unclerus@gmail.com> |
1c9894662795
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34 | * |
1c9894662795
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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 | |
1c9894662795
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38 | #include <esp_log.h> |
1c9894662795
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39 | #include <freertos/FreeRTOS.h> |
1c9894662795
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40 | #include <freertos/task.h> |
1c9894662795
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41 | #include <esp_idf_lib_helpers.h> |
1c9894662795
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42 | #include "max31725.h" |
1c9894662795
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43 | |
1c9894662795
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44 | static const char *TAG = "max31725"; |
1c9894662795
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45 | |
1c9894662795
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46 | static const float t_lsb = 0.00390625; |
1c9894662795
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47 | |
1c9894662795
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48 | #define MAX31725_I2C_ADDR_MAX 0x5f |
1c9894662795
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49 | |
1c9894662795
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50 | #define I2C_FREQ_HZ 400000 // 400kHz |
1c9894662795
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51 | |
1c9894662795
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52 | #define REG_TEMP 0 |
1c9894662795
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53 | #define REG_CONF 1 |
1c9894662795
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54 | #define REG_HYST 2 |
1c9894662795
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55 | #define REG_OS 3 |
1c9894662795
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56 | |
1c9894662795
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57 | #define BIT_SHUTDOWN 0 |
1c9894662795
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58 | #define BIT_COMP_INT 1 |
1c9894662795
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59 | #define BIT_OS_POL 2 |
1c9894662795
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60 | #define BIT_FAULT_Q0 3 |
1c9894662795
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61 | #define BIT_DATA_FMT 5 |
1c9894662795
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62 | #define BIT_TIMEOUT 6 |
1c9894662795
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63 | #define BIT_ONE_SHOT 7 |
1c9894662795
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64 | |
1c9894662795
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65 | #define FMT_SHIFT 64.0 |
1c9894662795
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66 | #define CONV_TIME_MS 50 |
1c9894662795
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67 | |
1c9894662795
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68 | #define CHECK(x) do { esp_err_t __; if ((__ = x) != ESP_OK) return __; } while (0) |
1c9894662795
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69 | #define CHECK_ARG(VAL) do { if (!(VAL)) return ESP_ERR_INVALID_ARG; } while (0) |
1c9894662795
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70 | #define BV(x) (1 << (x)) |
1c9894662795
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71 | |
1c9894662795
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72 | typedef union |
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73 | { |
1c9894662795
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74 | uint16_t udata; |
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75 | int16_t sdata; |
1c9894662795
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76 | } temp_data_t; |
1c9894662795
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77 | |
1c9894662795
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78 | static esp_err_t read_temp(i2c_dev_t *dev, uint8_t reg, float *temp, max31725_data_format_t fmt) |
1c9894662795
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79 | { |
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80 | CHECK_ARG(dev && temp); |
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81 | |
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82 | temp_data_t buf; |
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83 | |
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84 | I2C_DEV_TAKE_MUTEX(dev); |
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85 | I2C_DEV_CHECK(dev, i2c_dev_read_reg(dev, reg, &buf.udata, 2)); |
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86 | I2C_DEV_GIVE_MUTEX(dev); |
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87 | |
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88 | buf.udata = (buf.udata << 8) | (buf.udata >> 8); |
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89 | *temp = buf.sdata * t_lsb + (fmt == MAX31725_FMT_EXTENDED ? FMT_SHIFT : 0); |
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90 | |
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91 | return ESP_OK; |
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92 | } |
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93 | |
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94 | static esp_err_t write_temp(i2c_dev_t *dev, uint8_t reg, float temp, max31725_data_format_t fmt) |
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95 | { |
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96 | CHECK_ARG(dev); |
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97 | |
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98 | temp_data_t buf; |
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99 | buf.sdata = (temp - (fmt == MAX31725_FMT_EXTENDED ? FMT_SHIFT : 0)) / t_lsb; |
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100 | buf.udata = (buf.udata << 8) | (buf.udata >> 8); |
1c9894662795
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101 | |
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102 | I2C_DEV_TAKE_MUTEX(dev); |
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103 | I2C_DEV_CHECK(dev, i2c_dev_write_reg(dev, reg, &buf.udata, 2)); |
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104 | I2C_DEV_GIVE_MUTEX(dev); |
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105 | |
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106 | return ESP_OK; |
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107 | } |
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108 | |
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109 | /////////////////////////////////////////////////////////////////////////////// |
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110 | |
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111 | esp_err_t max31725_init_desc(i2c_dev_t *dev, uint8_t addr, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio) |
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112 | { |
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113 | CHECK_ARG(dev); |
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114 | if (addr < MAX31725_I2C_ADDR_BASE || addr > MAX31725_I2C_ADDR_MAX) |
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115 | { |
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116 | ESP_LOGE(TAG, "Invalid device address: 0x%02x", addr); |
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117 | return ESP_ERR_INVALID_ARG; |
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118 | } |
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119 | |
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120 | dev->port = port; |
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121 | dev->addr = addr; |
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122 | dev->cfg.sda_io_num = sda_gpio; |
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123 | dev->cfg.scl_io_num = scl_gpio; |
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124 | #if HELPER_TARGET_IS_ESP32 |
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125 | dev->cfg.master.clk_speed = I2C_FREQ_HZ; |
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126 | #endif |
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127 | |
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128 | return i2c_dev_create_mutex(dev); |
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129 | } |
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130 | |
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131 | esp_err_t max31725_free_desc(i2c_dev_t *dev) |
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132 | { |
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133 | CHECK_ARG(dev); |
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134 | |
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135 | return i2c_dev_delete_mutex(dev); |
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136 | } |
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137 | |
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138 | esp_err_t max31725_get_config(i2c_dev_t *dev, max31725_mode_t *mode, max31725_data_format_t *fmt, max31725_fault_queue_t *fq, |
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139 | max31725_os_polarity_t *op, max31725_os_mode_t *om) |
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140 | { |
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141 | CHECK_ARG(dev && mode && fmt && fq && op && om); |
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142 | |
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143 | uint8_t b; |
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144 | |
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145 | I2C_DEV_TAKE_MUTEX(dev); |
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146 | I2C_DEV_CHECK(dev, i2c_dev_read_reg(dev, REG_CONF, &b, 1)); |
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147 | I2C_DEV_GIVE_MUTEX(dev); |
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148 | |
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149 | *mode = (b >> BIT_SHUTDOWN) & 1; |
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150 | *fmt = (b >> BIT_DATA_FMT) & 1; |
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151 | *fq = (b >> BIT_FAULT_Q0) & 3; |
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152 | *op = (b >> BIT_OS_POL) & 1; |
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153 | *om = (b >> BIT_COMP_INT) & 1; |
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154 | |
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155 | return ESP_OK; |
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156 | } |
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157 | |
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158 | esp_err_t max31725_set_config(i2c_dev_t *dev, max31725_mode_t mode, max31725_data_format_t fmt, max31725_fault_queue_t fq, |
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159 | max31725_os_polarity_t op, max31725_os_mode_t om) |
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160 | { |
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161 | CHECK_ARG(dev && fq <= MAX31725_FAULTS_6); |
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162 | |
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163 | uint8_t b = (fmt != MAX31725_FMT_NORMAL ? BV(BIT_DATA_FMT) : 0) | |
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164 | (fq << BIT_FAULT_Q0) | |
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165 | (op != MAX31725_OS_LOW ? BV(BIT_OS_POL) : 0) | |
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166 | (om != MAX31725_OS_COMPARATOR ? BV(BIT_COMP_INT) : 0) | |
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167 | (mode != MAX31725_MODE_CONTINUOUS ? BV(BIT_SHUTDOWN) : 0); |
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168 | |
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169 | I2C_DEV_TAKE_MUTEX(dev); |
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170 | I2C_DEV_CHECK(dev, i2c_dev_write_reg(dev, REG_CONF, &b, 1)); |
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171 | I2C_DEV_GIVE_MUTEX(dev); |
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172 | |
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173 | return ESP_OK; |
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174 | } |
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175 | |
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176 | esp_err_t max31725_one_shot(i2c_dev_t *dev, float *temp, max31725_data_format_t fmt) |
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177 | { |
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178 | CHECK_ARG(dev); |
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179 | |
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180 | uint8_t b; |
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181 | |
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182 | I2C_DEV_TAKE_MUTEX(dev); |
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183 | I2C_DEV_CHECK(dev, i2c_dev_read_reg(dev, REG_CONF, &b, 1)); |
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184 | b |= BV(BIT_ONE_SHOT); |
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185 | I2C_DEV_CHECK(dev, i2c_dev_write_reg(dev, REG_CONF, &b, 1)); |
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186 | I2C_DEV_GIVE_MUTEX(dev); |
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187 | |
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188 | // wait 50 ms |
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189 | vTaskDelay(pdMS_TO_TICKS(CONV_TIME_MS)); |
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190 | |
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191 | return read_temp(dev, REG_TEMP, temp, fmt); |
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192 | } |
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193 | |
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194 | esp_err_t max31725_get_temperature(i2c_dev_t *dev, float *temp, max31725_data_format_t fmt) |
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195 | { |
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196 | return read_temp(dev, REG_TEMP, temp, fmt); |
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197 | } |
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198 | |
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199 | esp_err_t max31725_get_os_temp(i2c_dev_t *dev, float *temp, max31725_data_format_t fmt) |
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200 | { |
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201 | return read_temp(dev, REG_OS, temp, fmt); |
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202 | } |
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203 | |
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204 | esp_err_t max31725_set_os_temp(i2c_dev_t *dev, float temp, max31725_data_format_t fmt) |
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
|
205 | { |
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
|
206 | return write_temp(dev, REG_OS, temp, fmt); |
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
|
207 | } |
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
|
208 | |
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
|
209 | esp_err_t max31725_get_hysteresis_temp(i2c_dev_t *dev, float *temp, max31725_data_format_t fmt) |
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
|
210 | { |
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
|
211 | return read_temp(dev, REG_HYST, temp, fmt); |
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
|
212 | } |
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
|
213 | |
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
|
214 | esp_err_t max31725_set_hysteresis_temp(i2c_dev_t *dev, float temp, max31725_data_format_t fmt) |
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
|
215 | { |
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
|
216 | return write_temp(dev, REG_HYST, temp, fmt); |
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
|
217 | } |