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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1 | /* |
1c9894662795
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2 | * The MIT License (MIT) |
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3 | * |
1c9894662795
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4 | * Copyright (c) 2015 Frank Bargstedt |
1c9894662795
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5 | * Copyright (c) 2018 Ruslan V. Uss <unclerus@gmail.com> |
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6 | * |
1c9894662795
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7 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
1c9894662795
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8 | * of this software and associated documentation files (the "Software"), to deal |
1c9894662795
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9 | * in the Software without restriction, including without limitation the rights |
1c9894662795
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10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
1c9894662795
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11 | * copies of the Software, and to permit persons to whom the Software is |
1c9894662795
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12 | * furnished to do so, subject to the following conditions: |
1c9894662795
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13 | * The above copyright notice and this permission notice shall be included in all |
1c9894662795
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14 | * copies or substantial portions of the Software. |
1c9894662795
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15 | * |
1c9894662795
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16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
1c9894662795
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17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
1c9894662795
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18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
1c9894662795
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19 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
1c9894662795
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20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
1c9894662795
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21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
1c9894662795
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22 | * SOFTWARE. |
1c9894662795
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23 | */ |
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24 | |
1c9894662795
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25 | /** |
1c9894662795
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26 | * @file bmp180.h |
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27 | * @defgroup bmp180 bmp180 |
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28 | * @{ |
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29 | * |
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30 | * ESP-IDF driver for BMP180 digital pressure sensor |
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31 | * |
1c9894662795
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32 | * Ported from esp-open-rtos |
1c9894662795
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33 | * |
1c9894662795
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34 | * Copyright (c) 2015 Frank Bargstedt\n |
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35 | * Copyright (c) 2018 Ruslan V. Uss <unclerus@gmail.com> |
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36 | * |
1c9894662795
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37 | * MIT Licensed as described in the file LICENSE |
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38 | */ |
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39 | #ifndef __BMP180_H__ |
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40 | #define __BMP180_H__ |
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41 | |
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42 | #include <stdbool.h> |
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43 | #include <i2cdev.h> |
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44 | #include <esp_err.h> |
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45 | |
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46 | #define BMP180_DEVICE_ADDRESS 0x77 //!< I2C address |
1c9894662795
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47 | |
1c9894662795
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48 | #ifdef __cplusplus |
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49 | extern "C" { |
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50 | #endif |
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51 | |
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52 | /** |
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53 | * BMP180 device descriptor |
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54 | */ |
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55 | typedef struct |
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56 | { |
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57 | i2c_dev_t i2c_dev; |
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58 | |
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59 | int16_t AC1; |
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60 | int16_t AC2; |
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61 | int16_t AC3; |
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62 | uint16_t AC4; |
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63 | uint16_t AC5; |
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64 | uint16_t AC6; |
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65 | |
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66 | int16_t B1; |
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67 | int16_t B2; |
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68 | |
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69 | int16_t MB; |
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70 | int16_t MC; |
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71 | int16_t MD; |
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72 | } bmp180_dev_t; |
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73 | |
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74 | /** |
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75 | * Hardware accuracy mode. |
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76 | * See Table 3 of the datasheet |
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77 | */ |
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78 | typedef enum |
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79 | { |
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80 | BMP180_MODE_ULTRA_LOW_POWER = 0, //!< 1 sample, 4.5 ms |
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81 | BMP180_MODE_STANDARD, //!< 2 samples, 7.5 ms |
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82 | BMP180_MODE_HIGH_RESOLUTION, //!< 4 samples, 13.5 ms |
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83 | BMP180_MODE_ULTRA_HIGH_RESOLUTION //!< 8 samples, 25.5 ms |
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84 | } bmp180_mode_t; |
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85 | |
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86 | |
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87 | /** |
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88 | * @brief Initialize device descriptor |
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89 | * |
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90 | * @param dev Device descriptor |
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91 | * @param port I2C port number |
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92 | * @param sda_gpio GPIO pin number for SDA |
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93 | * @param scl_gpio GPIO pin number for SCL |
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94 | * @return `ESP_OK` on success |
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95 | */ |
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96 | esp_err_t bmp180_init_desc(bmp180_dev_t *dev, i2c_port_t port, gpio_num_t sda_gpio, gpio_num_t scl_gpio); |
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97 | |
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98 | /** |
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99 | * @brief Free device descriptor |
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100 | * |
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101 | * @param dev Pointer to BMP180 device descriptor |
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102 | * @return `ESP_OK` on success |
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103 | */ |
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104 | esp_err_t bmp180_free_desc(bmp180_dev_t *dev); |
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105 | |
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106 | /** |
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107 | * @brief Initialize device |
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108 | * |
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109 | * @param dev Pointer to BMP180 device descriptor |
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110 | * @return `ESP_OK` on success |
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111 | */ |
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112 | esp_err_t bmp180_init(bmp180_dev_t *dev); |
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113 | |
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114 | /** |
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115 | * @brief Measure temperature and pressure |
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116 | * |
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117 | * @param dev Pointer to BMP180 device descriptor |
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118 | * @param[out] temperature Temperature in degrees Celsius |
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119 | * @param[out] pressure Pressure in Pa |
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120 | * @param oss Measurement mode |
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121 | * @return `ESP_OK` on success |
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122 | */ |
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123 | esp_err_t bmp180_measure(bmp180_dev_t *dev, float *temperature, uint32_t *pressure, bmp180_mode_t oss); |
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124 | |
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125 | #ifdef __cplusplus |
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126 | } |
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127 | #endif |
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128 | |
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129 | /**@}*/ |
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130 | |
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131 | #endif /* __BMP180_H__ */ |