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
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2 | * Copyright (c) 2019 Tomoyuki Sakurai <y@trombik.org> |
1c9894662795
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3 | * |
1c9894662795
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4 | * Permission to use, copy, modify, and distribute this software for any |
1c9894662795
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5 | * purpose with or without fee is hereby granted, provided that the above |
1c9894662795
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6 | * copyright notice and this permission notice appear in all copies. |
1c9894662795
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7 | * |
1c9894662795
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8 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
1c9894662795
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9 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
1c9894662795
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10 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
1c9894662795
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11 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
1c9894662795
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12 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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13 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
1c9894662795
Added esp-idf-lib for a lot of sensors. Added the basic design for the BMP280 task.
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14 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
1c9894662795
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15 | */ |
1c9894662795
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16 | |
1c9894662795
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17 | /** |
1c9894662795
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18 | * @file lm75.c |
1c9894662795
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19 | * |
1c9894662795
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20 | * ESP-IDF driver for LM75, a digital temperature sensor and thermal watchdog. |
1c9894662795
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21 | * |
1c9894662795
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22 | * The driver depends on i2cdev library in `esp-idf-lib`. |
1c9894662795
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23 | * |
1c9894662795
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24 | * The driver was written using LM75B. |
1c9894662795
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25 | */ |
1c9894662795
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26 | #include <esp_log.h> |
1c9894662795
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27 | #include <esp_err.h> |
1c9894662795
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28 | #include <esp_idf_lib_helpers.h> |
1c9894662795
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29 | #include "lm75.h" |
1c9894662795
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30 | |
1c9894662795
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31 | #define I2C_FREQ_HZ 1000000 // 1 Mhz |
1c9894662795
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32 | |
1c9894662795
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33 | #define LM75_MASK_SHUTDOWN (1 << 0) |
1c9894662795
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34 | #define LM75_MASK_OS_COMP_INT (1 << 1) |
1c9894662795
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35 | #define LM75_MASK_OS_POL (1 << 2) |
1c9894662795
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36 | #define LM75_MASK_OS_F_QUE ((1 << 4) | (1 << 3)) |
1c9894662795
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37 | |
1c9894662795
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38 | #define LM75_REG_CONF 0x01 |
1c9894662795
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39 | #define LM75_REG_TEMP 0x00 |
1c9894662795
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40 | #define LM75_REG_TOS 0x03 |
1c9894662795
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41 | #define LM75_REG_THYST 0x02 |
1c9894662795
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42 | |
1c9894662795
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43 | #define CHECK(x) do { esp_err_t __; if ((__ = x) != ESP_OK) return __; } while (0) |
1c9894662795
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44 | #define CHECK_ARG(VAL) do { if (!(VAL)) return ESP_ERR_INVALID_ARG; } while (0) |
1c9894662795
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45 | |
1c9894662795
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46 | /* use CHECK_LOGE after I2C_DEV_TAKE_MUTEX(). */ |
1c9894662795
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47 | #define CHECK_LOGE(dev, x, msg, ...) do { \ |
1c9894662795
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48 | esp_err_t __; \ |
1c9894662795
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49 | if ((__ = x) != ESP_OK) { \ |
1c9894662795
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50 | I2C_DEV_GIVE_MUTEX(dev); \ |
1c9894662795
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51 | ESP_LOGE(TAG, msg, ## __VA_ARGS__); \ |
1c9894662795
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52 | return __; \ |
1c9894662795
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53 | } \ |
1c9894662795
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54 | } while (0) |
1c9894662795
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55 | |
1c9894662795
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56 | const static char *TAG = "lm75"; |
1c9894662795
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57 | |
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58 | /* read_register* and write_register* must be protected with I2C_DEV_TAKE_MUTEX */ |
1c9894662795
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59 | static esp_err_t read_register16(i2c_dev_t *dev, uint8_t reg, uint16_t *value) |
1c9894662795
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60 | { |
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61 | uint8_t data[] = { 0, 0 }; |
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62 | CHECK(i2c_dev_read_reg(dev, reg, data, 2)); |
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63 | *value = (data[0] << 8) | data[1]; |
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64 | ESP_LOGV(TAG, "read_register16() reg: 0x%x value: 0x%x", reg, *value); |
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65 | return ESP_OK; |
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66 | } |
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67 | |
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68 | static esp_err_t read_register8(i2c_dev_t *dev, uint8_t reg, uint8_t *value) |
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69 | { |
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70 | CHECK(i2c_dev_read_reg(dev, reg, value, 1)); |
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71 | ESP_LOGV(TAG, "read_register8() reg: 0x%x value: 0x%x", reg, *value); |
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72 | return ESP_OK; |
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73 | } |
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74 | |
1c9894662795
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75 | static esp_err_t write_register16(i2c_dev_t *dev, uint8_t reg, uint16_t value) |
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76 | { |
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77 | ESP_LOGV(TAG, "write_register16(): reg: 0x%x, value: 0x%x", reg, value); |
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78 | return i2c_dev_write(dev, ®, 2, &value, 2); |
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79 | } |
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80 | |
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81 | static esp_err_t write_register8(i2c_dev_t *dev, uint8_t reg, uint8_t value) |
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82 | { |
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83 | ESP_LOGV(TAG, "write_register8(): reg: 0x%x, value: 0x%x", reg, value); |
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84 | return i2c_dev_write_reg(dev, reg, &value, 1); |
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85 | } |
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86 | |
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87 | esp_err_t lm75_read_temperature(i2c_dev_t *dev, float *value) |
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88 | { |
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89 | CHECK_ARG(dev); |
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90 | uint16_t raw_data; |
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91 | |
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92 | I2C_DEV_TAKE_MUTEX(dev); |
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93 | CHECK_LOGE(dev, read_register16(dev, LM75_REG_TEMP, &raw_data), |
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94 | "lm75_read_temperature(): read_register16() failed: register: 0x%x", LM75_REG_TEMP); |
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95 | I2C_DEV_GIVE_MUTEX(dev); |
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96 | |
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97 | *value = (raw_data >> 5) * 0.125; |
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98 | return ESP_OK; |
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99 | } |
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100 | |
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101 | esp_err_t lm75_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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102 | { |
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103 | CHECK_ARG(dev); |
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104 | if (addr < LM75_I2C_ADDRESS_DEFAULT || addr > LM75_I2C_ADDRESS_MAX) { |
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105 | ESP_LOGE(TAG, "lm75_init_desc(): Invalid I2C address `0x%x`. address must not be less than 0x%x, not be more than 0x%x", |
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106 | addr, LM75_I2C_ADDRESS_DEFAULT, LM75_I2C_ADDRESS_MAX); |
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107 | return ESP_ERR_INVALID_ARG; |
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108 | } |
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109 | |
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110 | dev->port = port; |
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111 | dev->addr = addr; |
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112 | dev->cfg.sda_io_num = sda_gpio; |
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113 | dev->cfg.scl_io_num = scl_gpio; |
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114 | #if HELPER_TARGET_IS_ESP32 |
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115 | dev->cfg.master.clk_speed = I2C_FREQ_HZ; |
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116 | #endif |
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117 | return i2c_dev_create_mutex(dev); |
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118 | } |
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119 | |
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120 | esp_err_t lm75_set_os_threshold(i2c_dev_t *dev, const float value) |
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121 | { |
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122 | CHECK_ARG(dev); |
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123 | uint16_t reg_value; |
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124 | |
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125 | /* two's complement format with the resolution of 0.5 C degree. |
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126 | * 7 LSB of the LSByte are equal to zero and should be ignored. |
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127 | */ |
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128 | if (value < 0) { |
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129 | reg_value = ((uint16_t)(abs((int16_t)value) * 2) ^ 0xff) + 1; |
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130 | } else { |
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131 | reg_value = value * 2; |
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132 | } |
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133 | reg_value = reg_value << 7; |
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134 | /* when the value is 25.0f: |
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135 | * reg_value: 0x1900 9 bit reg_value: 0x32 value: 25.000000 */ |
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136 | ESP_LOGV(TAG, "lm75_set_os_threshold(): reg_value: 0x%x 9 bit reg_value: 0x%x value: %f", |
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137 | reg_value, reg_value >> 7, value); |
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138 | |
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139 | I2C_DEV_TAKE_MUTEX(dev); |
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140 | CHECK_LOGE(dev, write_register16(dev, LM75_REG_TOS, reg_value), |
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141 | "lm75_set_os_threshold(): write_register16() failed: register 0x%x", |
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142 | LM75_REG_TOS); |
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143 | I2C_DEV_GIVE_MUTEX(dev); |
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144 | |
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145 | return ESP_OK; |
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146 | } |
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147 | |
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148 | |
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149 | esp_err_t lm75_get_os_threshold(i2c_dev_t *dev, float *value) |
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150 | { |
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151 | CHECK_ARG(dev); |
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152 | uint16_t reg_value; |
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153 | |
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154 | I2C_DEV_TAKE_MUTEX(dev); |
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155 | CHECK_LOGE(dev, read_register16(dev, LM75_REG_TOS, ®_value), |
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156 | "lm75_get_os_threshold(): read_register16() failed: register: 0x%x", LM75_REG_TOS); |
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157 | I2C_DEV_GIVE_MUTEX(dev); |
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158 | |
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159 | ESP_LOGV(TAG, "lm75_get_os_threshold(): reg_value: 0x%x 9 bit reg_value: 0x%x", reg_value, reg_value >> 7); |
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160 | reg_value = reg_value >> 7; |
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161 | if (reg_value & (1 << 10)) { |
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162 | *value = ((reg_value | (1 << 10)) ^ 0xff) + 1; |
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163 | *value *= -1; |
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164 | *value /= 2; |
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165 | } else { |
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166 | *value = reg_value / 2; |
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167 | } |
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168 | |
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169 | return ESP_OK; |
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170 | } |
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171 | |
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172 | esp_err_t lm75_free_desc(i2c_dev_t *dev) |
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173 | { |
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174 | CHECK_ARG(dev); |
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175 | |
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176 | return i2c_dev_delete_mutex(dev); |
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177 | } |
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178 | |
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179 | static |
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180 | esp_err_t lm75_set_bits_register8(i2c_dev_t *dev, uint8_t reg, uint8_t mask) |
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181 | { |
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182 | CHECK_ARG(dev); |
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183 | uint8_t value; |
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184 | ESP_LOGV(TAG, "lm75_set_bits_register8(): reg: 0x%x, mask: 0x%x", reg, mask); |
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185 | |
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186 | I2C_DEV_TAKE_MUTEX(dev); |
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187 | CHECK_LOGE(dev, read_register8(dev, reg, &value), |
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188 | "lm75_set_bits_register8(): read_register8() failed reg: 0x%x", reg); |
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189 | ESP_LOGV(TAG, "lm75_set_bits_register8(): value in register: 0x%x", value); |
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190 | if ((value & mask) != mask) { |
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191 | value |= mask; |
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192 | ESP_LOGV(TAG, "lm75_set_bits_register8(): updating register with value: 0x%x", value); |
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193 | CHECK_LOGE(dev, write_register8(dev, reg, value), |
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194 | "lm75_set_bits_register8(): write_register8() failed reg: 0x%x", reg); |
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195 | } else { |
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196 | ESP_LOGV(TAG, "lm75_set_bits_register8(): register unchanged"); |
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197 | } |
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198 | I2C_DEV_GIVE_MUTEX(dev); |
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199 | return ESP_OK; |
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200 | |
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201 | } |
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202 | |
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203 | static |
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204 | esp_err_t lm75_clear_bits_register8(i2c_dev_t *dev, uint8_t reg, uint8_t mask) |
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205 | { |
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206 | CHECK_ARG(dev); |
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207 | uint8_t value; |
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208 | ESP_LOGV(TAG, "lm75_clear_bits_register8(): reg: 0x%x, mask: 0x%x", reg, mask); |
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209 | |
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210 | I2C_DEV_TAKE_MUTEX(dev); |
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211 | CHECK_LOGE(dev, read_register8(dev, reg, &value), |
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212 | "read_register8() failed: register: 0x%x", reg); |
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213 | if ((value & mask) == mask) { |
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214 | value ^= mask; |
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215 | ESP_LOGV(TAG, "lm75_clear_bits_register8(): updating register with value: 0x%x", value); |
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216 | CHECK_LOGE(dev, write_register8(dev, reg, value), |
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217 | "write_register8() failed: register 0x%x", reg); |
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218 | } else { |
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219 | ESP_LOGV(TAG, "lm75_clear_bits_register8(): register unchanged"); |
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220 | } |
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221 | I2C_DEV_GIVE_MUTEX(dev); |
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222 | return ESP_OK; |
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223 | |
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224 | } |
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225 | |
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226 | esp_err_t lm75_shutdown(i2c_dev_t *dev) |
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227 | { |
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228 | CHECK_ARG(dev); |
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229 | ESP_LOGV(TAG, "lm75_shutdown(): trying to set shutdown bit"); |
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230 | |
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231 | return lm75_set_bits_register8(dev, LM75_REG_CONF, LM75_MASK_SHUTDOWN); |
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232 | } |
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233 | |
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234 | esp_err_t lm75_wakeup(i2c_dev_t *dev) |
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235 | { |
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236 | CHECK_ARG(dev); |
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237 | ESP_LOGV(TAG, "lm75_wakeup(): trying to clear shutdown bit"); |
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238 | |
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239 | return lm75_clear_bits_register8(dev, LM75_REG_CONF, LM75_MASK_SHUTDOWN); |
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240 | } |
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241 | |
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242 | esp_err_t lm75_set_os_polarity(i2c_dev_t *dev, const lm75_os_polarity_t v) |
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243 | { |
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244 | ESP_LOGV(TAG, "lm75_set_os_polarity(): v: %d", v); |
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245 | if (v > 1) { |
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246 | ESP_LOGE(TAG, "lm75_set_os_polarity(): second argument must be %d or %d", |
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247 | LM75_OSP_LOW, LM75_OSP_HIGH); |
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248 | return ESP_ERR_INVALID_ARG; |
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249 | } |
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250 | |
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251 | if (v == LM75_OSP_HIGH) { |
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252 | return lm75_set_bits_register8(dev, LM75_REG_CONF, LM75_MASK_OS_POL); |
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253 | } else { |
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254 | return lm75_clear_bits_register8(dev, LM75_REG_CONF, LM75_MASK_OS_POL); |
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255 | } |
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256 | } |
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257 | esp_err_t lm75_get_os_polarity(i2c_dev_t *dev, uint8_t *v) |
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258 | { |
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259 | CHECK_ARG(dev); |
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260 | uint8_t reg_value; |
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261 | |
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262 | I2C_DEV_TAKE_MUTEX(dev); |
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263 | CHECK_LOGE(dev, read_register8(dev, LM75_REG_CONF, ®_value), |
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264 | "lm75_get_os_polarity(): read_register8() failed: reg: 0x%x", LM75_REG_CONF); |
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265 | I2C_DEV_GIVE_MUTEX(dev); |
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266 | |
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267 | *v = (reg_value & LM75_MASK_OS_POL) == 0 ? 0 : 1; |
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268 | return ESP_OK; |
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269 | } |
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270 | |
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271 | esp_err_t lm75_set_os_mode(i2c_dev_t *dev, lm75_os_mode_t v) |
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272 | { |
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273 | ESP_LOGV(TAG, "lm75_set_os_mode(): v: %d", v); |
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274 | if (v > 1) { |
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275 | ESP_LOGE(TAG, "lm75_set_os_mode(): second argument must be %d or %d", |
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276 | LM75_OS_MODE_COMP, LM75_OS_MODE_INT); |
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277 | return ESP_ERR_INVALID_ARG; |
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278 | } |
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279 | |
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280 | if (v == LM75_OS_MODE_INT) { |
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281 | return lm75_set_bits_register8(dev, LM75_REG_CONF, LM75_MASK_OS_COMP_INT); |
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282 | } else { |
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283 | return lm75_clear_bits_register8(dev, LM75_REG_CONF, LM75_MASK_OS_COMP_INT); |
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284 | } |
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285 | } |
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286 | /* |
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287 | * Configuration register (0x00) |
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288 | * | [7:5] | 4 | 3 | 2 | 1 | 0 | |
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289 | * | Reserved | OS_F_QUE[1:0] | PS_POL | OS_COMP_INT | SHUTDOWN | |
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290 | */ |
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291 | esp_err_t lm75_init(i2c_dev_t *dev, const lm75_config_t config) |
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292 | { |
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293 | CHECK_ARG(dev); |
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294 | uint8_t value = 0; |
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295 | |
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296 | value = (config.mode << 0) | |
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297 | (config.os_mode << 1) | |
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298 | (config.os_mode << 2) | |
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299 | (config.os_fault_queue << 3); |
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300 | |
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301 | I2C_DEV_TAKE_MUTEX(dev); |
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302 | CHECK_LOGE(dev, write_register8(dev, LM75_REG_CONF, value), |
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303 | "lm75_init(): write_register8() failed"); |
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
|
304 | I2C_DEV_GIVE_MUTEX(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:
diff
changeset
|
305 | |
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
|
306 | return ESP_OK; |
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
|
307 | } |